Add eden-watcher generated using codegen (#47)

* Add a watcher for EdenNetwork contract

* Add events from MerkleDistributor contract to eden-watcher

* Add ERC721 Transfer and Approval events to eden-watcher schema

* Add artifacts for DistributorGovernance and MerkleDistributor contracts

packages/eden-watcher/.eslintignore

@@ -0,0 +1,2 @@
+# Don't lint build output.
+dist

packages/eden-watcher/.eslintrc.json

@@ -0,0 +1,27 @@
+{
+    "env": {
+        "browser": true,
+        "es2021": true
+    },
+    "extends": [
+        "semistandard",
+        "plugin:@typescript-eslint/recommended"
+    ],
+    "parser": "@typescript-eslint/parser",
+    "parserOptions": {
+        "ecmaVersion": 12,
+        "sourceType": "module"
+    },
+    "plugins": [
+        "@typescript-eslint"
+    ],
+    "rules": {
+        "@typescript-eslint/no-explicit-any": "off",
+        "@typescript-eslint/explicit-module-boundary-types": [
+            "warn",
+            {
+                "allowArgumentsExplicitlyTypedAsAny": true
+            }
+        ]
+    }
+}

packages/eden-watcher/README.md

@@ -0,0 +1,191 @@
+# EdenNetwork Watcher
+
+## Setup
+
+* Run the following command to install required packages:
+
+  ```bash
+  yarn
+  ```
+
+* Run the IPFS (go-ipfs version 0.9.0) daemon:
+
+  ```bash
+  ipfs daemon
+  ```
+
+* Create a postgres12 database for the watcher:
+
+  ```bash
+  sudo su - postgres
+  createdb eden-watcher
+  ```
+
+* If the watcher is an `active` watcher:
+
+  Create database for the job queue and enable the `pgcrypto` extension on them (https://github.com/timgit/pg-boss/blob/master/docs/usage.md#intro):
+
+  ```
+  createdb eden-watcher-job-queue
+  ```
+
+  ```
+  postgres@tesla:~$ psql -U postgres -h localhost eden-watcher-job-queue
+  Password for user postgres:
+  psql (12.7 (Ubuntu 12.7-1.pgdg18.04+1))
+  SSL connection (protocol: TLSv1.3, cipher: TLS_AES_256_GCM_SHA384, bits: 256, compression: off)
+  Type "help" for help.
+
+  eden-watcher-job-queue=# CREATE EXTENSION pgcrypto;
+  CREATE EXTENSION
+  eden-watcher-job-queue=# exit
+  ```
+
+* In the [config file](./environments/local.toml):
+
+  * Update the database connection settings.
+
+  * Update the `upstream` config and provide the `ipld-eth-server` GQL API and the `indexer-db` postgraphile endpoints.
+
+  * Update the `server` config with state checkpoint settings and provide the IPFS API address.
+
+## Customize
+
+* Indexing on an event:
+
+  * Edit the custom hook function `handleEvent` (triggered on an event) in [hooks.ts](./src/hooks.ts) to perform corresponding indexing using the `Indexer` object.
+
+  * While using the indexer storage methods for indexing, pass `diff` as true if default state is desired to be generated using the state variables being indexed.
+
+* Generating state:
+
+  * Edit the custom hook function `createInitialCheckpoint` (triggered on watch-contract, checkpoint: `true`) in [hooks.ts](./src/hooks.ts) to save an initial checkpoint `IPLDBlock` using the `Indexer` object.
+
+  * Edit the custom hook function `createStateDiff` (triggered on a block) in [hooks.ts](./src/hooks.ts) to save the state in a `diff` `IPLDBlock` using the `Indexer` object. The default state (if exists) is updated.
+
+  * Edit the custom hook function `createStateCheckpoint` (triggered just before default and CLI checkpoint) in [hooks.ts](./src/hooks.ts) to save the state in a `checkpoint` `IPLDBlock` using the `Indexer` object.
+
+* The existing example hooks in [hooks.ts](./src/hooks.ts) are for an `ERC20` contract.
+
+## Run
+
+* Run the watcher:
+
+  ```bash
+  yarn server
+  ```
+
+GQL console: http://localhost:3008/graphql
+
+* If the watcher is an `active` watcher:
+
+  * Run the job-runner:
+
+    ```bash
+    yarn job-runner
+    ```
+
+  * To watch a contract:
+
+    ```bash
+    yarn watch:contract --address <contract-address> --kind <contract-kind> --checkpoint <true | false> --starting-block [block-number]
+    ```
+
+    * `address`: Address or identifier of the contract to be watched.
+    * `kind`: Kind of the contract.
+    * `checkpoint`: Turn checkpointing on (`true` | `false`).
+    * `starting-block`: Starting block for the contract (default: `1`).
+
+    Examples:
+    
+    Watch a contract with its address and checkpointing on:
+
+    ```bash
+    yarn watch:contract --address 0x1F78641644feB8b64642e833cE4AFE93DD6e7833 --kind ERC20 --checkpoint true
+    ```
+
+    Watch a contract with its identifier and checkpointing on:
+
+    ```bash
+    yarn watch:contract --address MyProtocol --kind protocol --checkpoint true
+    ```
+
+  * To fill a block range:
+
+    ```bash
+    yarn fill --start-block <from-block> --end-block <to-block>
+    ```
+
+    * `start-block`: Block number to start filling from.
+    * `end-block`: Block number till which to fill. 
+
+  * To create a checkpoint for a contract:
+
+    ```bash
+    yarn checkpoint --address <contract-address> --block-hash [block-hash]
+    ```
+
+    * `address`: Address or identifier of the contract for which to create a checkpoint.
+    * `block-hash`: Hash of a block (in the pruned region) at which to create the checkpoint (default: latest canonical block hash).
+
+  * To reset the watcher to a previous block number:
+
+    * Reset state:
+
+      ```bash
+      yarn reset state --block-number <previous-block-number>
+      ```
+
+    * Reset job-queue:
+
+      ```bash
+      yarn reset job-queue --block-number <previous-block-number>
+      ```
+    
+    * `block-number`: Block number to which to reset the watcher.
+
+  * To export and import the watcher state:
+
+    * In source watcher, export watcher state:
+
+      ```bash
+      yarn export-state --export-file [export-file-path]
+      ```
+
+      * `export-file`: Path of JSON file to which to export the watcher data.
+
+    * In target watcher, run job-runner:
+
+      ```bash
+      yarn job-runner
+      ```
+    
+    * Import watcher state:
+
+      ```bash
+      yarn import-state --import-file <import-file-path>
+      ```
+
+      * `import-file`: Path of JSON file from which to import the watcher data.
+    
+    * Run fill:
+
+      ```bash
+      yarn fill --start-block <snapshot-block> --end-block <to-block>
+      ```
+
+      * `snapshot-block`: Block number at which the watcher state was exported.
+
+    * Run server:
+
+      ```bash
+      yarn server
+      ```
+
+  * To inspect a CID:
+
+    ```bash
+    yarn inspect-cid --cid <cid>
+    ```
+
+    * `cid`: CID to be inspected.

packages/eden-watcher/environments/local.toml

@@ -0,0 +1,42 @@
+[server]
+  host = "127.0.0.1"
+  port = 3012
+  kind = "active"
+
+  # Checkpointing state.
+  checkpointing = true
+
+  # Checkpoint interval in number of blocks.
+  checkpointInterval = 2000
+
+  # IPFS API address (can be taken from the output on running the IPFS daemon).
+  ipfsApiAddr = "/ip4/127.0.0.1/tcp/5001"
+  
+  subgraphPath = "../graph-node/test/subgraph/eden"
+
+[database]
+  type = "postgres"
+  host = "localhost"
+  port = 5432
+  database = "eden-watcher"
+  username = "postgres"
+  password = "postgres"
+  synchronize = true
+  logging = false
+
+[upstream]
+  [upstream.ethServer]
+    gqlApiEndpoint = "http://127.0.0.1:8082/graphql"
+    gqlPostgraphileEndpoint = "http://127.0.0.1:5000/graphql"
+    rpcProviderEndpoint = "http://127.0.0.1:8081"
+    blockDelayInMilliSecs = 2000
+
+  [upstream.cache]
+    name = "requests"
+    enabled = false
+    deleteOnStart = false
+
+[jobQueue]
+  dbConnectionString = "postgres://postgres:postgres@localhost/eden-watcher-job-queue"
+  maxCompletionLagInSecs = 300
+  jobDelayInMilliSecs = 100

packages/eden-watcher/package.json

@@ -0,0 +1,69 @@
+{
+  "name": "@vulcanize/eden-watcher",
+  "version": "0.1.0",
+  "description": "eden-watcher",
+  "private": true,
+  "main": "dist/index.js",
+  "scripts": {
+    "lint": "eslint .",
+    "build": "tsc",
+    "server": "DEBUG=vulcanize:* ts-node src/server.ts",
+    "job-runner": "DEBUG=vulcanize:* ts-node src/job-runner.ts",
+    "watch:contract": "DEBUG=vulcanize:* ts-node src/cli/watch-contract.ts",
+    "fill": "DEBUG=vulcanize:* ts-node src/fill.ts",
+    "reset": "DEBUG=vulcanize:* ts-node src/cli/reset.ts",
+    "checkpoint": "DEBUG=vulcanize:* ts-node src/cli/checkpoint.ts",
+    "export-state": "DEBUG=vulcanize:* ts-node src/cli/export-state.ts",
+    "import-state": "DEBUG=vulcanize:* ts-node src/cli/import-state.ts",
+    "inspect-cid": "DEBUG=vulcanize:* ts-node src/cli/inspect-cid.ts"
+  },
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/vulcanize/watcher-ts.git"
+  },
+  "author": "",
+  "license": "AGPL-3.0",
+  "bugs": {
+    "url": "https://github.com/vulcanize/watcher-ts/issues"
+  },
+  "homepage": "https://github.com/vulcanize/watcher-ts#readme",
+  "dependencies": {
+    "@apollo/client": "^3.3.19",
+    "@ethersproject/providers": "5.3.0",
+    "@ipld/dag-cbor": "^6.0.12",
+    "@vulcanize/cache": "^0.1.0",
+    "@vulcanize/ipld-eth-client": "^0.1.0",
+    "@vulcanize/solidity-mapper": "^0.1.0",
+    "@vulcanize/util": "^0.1.0",
+    "apollo-server-express": "^2.25.0",
+    "apollo-type-bigint": "^0.1.3",
+    "debug": "^4.3.1",
+    "ethers": "^5.2.0",
+    "express": "^4.17.1",
+    "graphql": "^15.5.0",
+    "graphql-import-node": "^0.0.4",
+    "ipfs-http-client": "^53.0.1",
+    "json-bigint": "^1.0.0",
+    "lodash": "^4.17.21",
+    "multiformats": "^9.4.8",
+    "reflect-metadata": "^0.1.13",
+    "typeorm": "^0.2.32",
+    "yargs": "^17.0.1"
+  },
+  "devDependencies": {
+    "@ethersproject/abi": "^5.3.0",
+    "@types/express": "^4.17.11",
+    "@types/yargs": "^17.0.0",
+    "@typescript-eslint/eslint-plugin": "^4.25.0",
+    "@typescript-eslint/parser": "^4.25.0",
+    "eslint": "^7.27.0",
+    "eslint-config-semistandard": "^15.0.1",
+    "eslint-config-standard": "^16.0.3",
+    "eslint-plugin-import": "^2.23.3",
+    "eslint-plugin-node": "^11.1.0",
+    "eslint-plugin-promise": "^5.1.0",
+    "eslint-plugin-standard": "^5.0.0",
+    "ts-node": "^10.0.0",
+    "typescript": "^4.3.2"
+  }
+}

packages/eden-watcher/src/artifacts/DistributorGovernance.json

@@ -0,0 +1,723 @@
+{
+  "abi": [
+    {
+      "inputs": [
+        {
+          "internalType": "address",
+          "name": "_admin",
+          "type": "address"
+        },
+        {
+          "internalType": "address[]",
+          "name": "_blockProducers",
+          "type": "address[]"
+        },
+        {
+          "internalType": "address[]",
+          "name": "_collectors",
+          "type": "address[]"
+        }
+      ],
+      "stateMutability": "nonpayable",
+      "type": "constructor"
+    },
+    {
+      "anonymous": false,
+      "inputs": [
+        {
+          "indexed": true,
+          "internalType": "address",
+          "name": "producer",
+          "type": "address"
+        }
+      ],
+      "name": "BlockProducerAdded",
+      "type": "event"
+    },
+    {
+      "anonymous": false,
+      "inputs": [
+        {
+          "indexed": true,
+          "internalType": "address",
+          "name": "producer",
+          "type": "address"
+        }
+      ],
+      "name": "BlockProducerRemoved",
+      "type": "event"
+    },
+    {
+      "anonymous": false,
+      "inputs": [
+        {
+          "indexed": true,
+          "internalType": "address",
+          "name": "producer",
+          "type": "address"
+        },
+        {
+          "indexed": true,
+          "internalType": "address",
+          "name": "collector",
+          "type": "address"
+        }
+      ],
+      "name": "BlockProducerRewardCollectorChanged",
+      "type": "event"
+    },
+    {
+      "anonymous": false,
+      "inputs": [],
+      "name": "RewardScheduleChanged",
+      "type": "event"
+    },
+    {
+      "anonymous": false,
+      "inputs": [
+        {
+          "indexed": true,
+          "internalType": "bytes32",
+          "name": "role",
+          "type": "bytes32"
+        },
+        {
+          "indexed": true,
+          "internalType": "bytes32",
+          "name": "previousAdminRole",
+          "type": "bytes32"
+        },
+        {
+          "indexed": true,
+          "internalType": "bytes32",
+          "name": "newAdminRole",
+          "type": "bytes32"
+        }
+      ],
+      "name": "RoleAdminChanged",
+      "type": "event"
+    },
+    {
+      "anonymous": false,
+      "inputs": [
+        {
+          "indexed": true,
+          "internalType": "bytes32",
+          "name": "role",
+          "type": "bytes32"
+        },
+        {
+          "indexed": true,
+          "internalType": "address",
+          "name": "account",
+          "type": "address"
+        },
+        {
+          "indexed": true,
+          "internalType": "address",
+          "name": "sender",
+          "type": "address"
+        }
+      ],
+      "name": "RoleGranted",
+      "type": "event"
+    },
+    {
+      "anonymous": false,
+      "inputs": [
+        {
+          "indexed": true,
+          "internalType": "bytes32",
+          "name": "role",
+          "type": "bytes32"
+        },
+        {
+          "indexed": true,
+          "internalType": "address",
+          "name": "account",
+          "type": "address"
+        },
+        {
+          "indexed": true,
+          "internalType": "address",
+          "name": "sender",
+          "type": "address"
+        }
+      ],
+      "name": "RoleRevoked",
+      "type": "event"
+    },
+    {
+      "inputs": [],
+      "name": "DEFAULT_ADMIN_ROLE",
+      "outputs": [
+        {
+          "internalType": "bytes32",
+          "name": "",
+          "type": "bytes32"
+        }
+      ],
+      "stateMutability": "view",
+      "type": "function"
+    },
+    {
+      "inputs": [],
+      "name": "DELEGATOR_ROLE",
+      "outputs": [
+        {
+          "internalType": "bytes32",
+          "name": "",
+          "type": "bytes32"
+        }
+      ],
+      "stateMutability": "view",
+      "type": "function"
+    },
+    {
+      "inputs": [],
+      "name": "GOV_ROLE",
+      "outputs": [
+        {
+          "internalType": "bytes32",
+          "name": "",
+          "type": "bytes32"
+        }
+      ],
+      "stateMutability": "view",
+      "type": "function"
+    },
+    {
+      "inputs": [],
+      "name": "REWARD_SCHEDULE_ENTRY_LENGTH",
+      "outputs": [
+        {
+          "internalType": "uint256",
+          "name": "",
+          "type": "uint256"
+        }
+      ],
+      "stateMutability": "view",
+      "type": "function"
+    },
+    {
+      "inputs": [
+        {
+          "internalType": "address",
+          "name": "producer",
+          "type": "address"
+        }
+      ],
+      "name": "add",
+      "outputs": [],
+      "stateMutability": "nonpayable",
+      "type": "function"
+    },
+    {
+      "inputs": [
+        {
+          "internalType": "address[]",
+          "name": "producers",
+          "type": "address[]"
+        }
+      ],
+      "name": "addBatch",
+      "outputs": [],
+      "stateMutability": "nonpayable",
+      "type": "function"
+    },
+    {
+      "inputs": [
+        {
+          "internalType": "address",
+          "name": "",
+          "type": "address"
+        }
+      ],
+      "name": "blockProducer",
+      "outputs": [
+        {
+          "internalType": "bool",
+          "name": "",
+          "type": "bool"
+        }
+      ],
+      "stateMutability": "view",
+      "type": "function"
+    },
+    {
+      "inputs": [
+        {
+          "internalType": "address",
+          "name": "producer",
+          "type": "address"
+        },
+        {
+          "internalType": "address",
+          "name": "collector",
+          "type": "address"
+        }
+      ],
+      "name": "delegate",
+      "outputs": [],
+      "stateMutability": "nonpayable",
+      "type": "function"
+    },
+    {
+      "inputs": [
+        {
+          "internalType": "address[]",
+          "name": "producers",
+          "type": "address[]"
+        },
+        {
+          "internalType": "address[]",
+          "name": "collectors",
+          "type": "address[]"
+        }
+      ],
+      "name": "delegateBatch",
+      "outputs": [],
+      "stateMutability": "nonpayable",
+      "type": "function"
+    },
+    {
+      "inputs": [
+        {
+          "internalType": "bytes32",
+          "name": "role",
+          "type": "bytes32"
+        }
+      ],
+      "name": "getRoleAdmin",
+      "outputs": [
+        {
+          "internalType": "bytes32",
+          "name": "",
+          "type": "bytes32"
+        }
+      ],
+      "stateMutability": "view",
+      "type": "function"
+    },
+    {
+      "inputs": [
+        {
+          "internalType": "bytes32",
+          "name": "role",
+          "type": "bytes32"
+        },
+        {
+          "internalType": "uint256",
+          "name": "index",
+          "type": "uint256"
+        }
+      ],
+      "name": "getRoleMember",
+      "outputs": [
+        {
+          "internalType": "address",
+          "name": "",
+          "type": "address"
+        }
+      ],
+      "stateMutability": "view",
+      "type": "function"
+    },
+    {
+      "inputs": [
+        {
+          "internalType": "bytes32",
+          "name": "role",
+          "type": "bytes32"
+        }
+      ],
+      "name": "getRoleMemberCount",
+      "outputs": [
+        {
+          "internalType": "uint256",
+          "name": "",
+          "type": "uint256"
+        }
+      ],
+      "stateMutability": "view",
+      "type": "function"
+    },
+    {
+      "inputs": [
+        {
+          "internalType": "bytes32",
+          "name": "role",
+          "type": "bytes32"
+        },
+        {
+          "internalType": "address",
+          "name": "account",
+          "type": "address"
+        }
+      ],
+      "name": "grantRole",
+      "outputs": [],
+      "stateMutability": "nonpayable",
+      "type": "function"
+    },
+    {
+      "inputs": [
+        {
+          "internalType": "bytes32",
+          "name": "role",
+          "type": "bytes32"
+        },
+        {
+          "internalType": "address",
+          "name": "account",
+          "type": "address"
+        }
+      ],
+      "name": "hasRole",
+      "outputs": [
+        {
+          "internalType": "bool",
+          "name": "",
+          "type": "bool"
+        }
+      ],
+      "stateMutability": "view",
+      "type": "function"
+    },
+    {
+      "inputs": [
+        {
+          "internalType": "address",
+          "name": "producer",
+          "type": "address"
+        }
+      ],
+      "name": "remove",
+      "outputs": [],
+      "stateMutability": "nonpayable",
+      "type": "function"
+    },
+    {
+      "inputs": [
+        {
+          "internalType": "address[]",
+          "name": "producers",
+          "type": "address[]"
+        }
+      ],
+      "name": "removeBatch",
+      "outputs": [],
+      "stateMutability": "nonpayable",
+      "type": "function"
+    },
+    {
+      "inputs": [
+        {
+          "internalType": "bytes32",
+          "name": "role",
+          "type": "bytes32"
+        },
+        {
+          "internalType": "address",
+          "name": "account",
+          "type": "address"
+        }
+      ],
+      "name": "renounceRole",
+      "outputs": [],
+      "stateMutability": "nonpayable",
+      "type": "function"
+    },
+    {
+      "inputs": [
+        {
+          "internalType": "bytes32",
+          "name": "role",
+          "type": "bytes32"
+        },
+        {
+          "internalType": "address",
+          "name": "account",
+          "type": "address"
+        }
+      ],
+      "name": "revokeRole",
+      "outputs": [],
+      "stateMutability": "nonpayable",
+      "type": "function"
+    },
+    {
+      "inputs": [
+        {
+          "internalType": "address",
+          "name": "",
+          "type": "address"
+        }
+      ],
+      "name": "rewardCollector",
+      "outputs": [
+        {
+          "internalType": "address",
+          "name": "",
+          "type": "address"
+        }
+      ],
+      "stateMutability": "view",
+      "type": "function"
+    },
+    {
+      "inputs": [],
+      "name": "rewardScheduleEntries",
+      "outputs": [
+        {
+          "internalType": "uint256",
+          "name": "",
+          "type": "uint256"
+        }
+      ],
+      "stateMutability": "view",
+      "type": "function"
+    },
+    {
+      "inputs": [
+        {
+          "internalType": "uint256",
+          "name": "index",
+          "type": "uint256"
+        }
+      ],
+      "name": "rewardScheduleEntry",
+      "outputs": [
+        {
+          "components": [
+            {
+              "internalType": "uint64",
+              "name": "startTime",
+              "type": "uint64"
+            },
+            {
+              "internalType": "uint64",
+              "name": "epochDuration",
+              "type": "uint64"
+            },
+            {
+              "internalType": "uint128",
+              "name": "rewardsPerEpoch",
+              "type": "uint128"
+            }
+          ],
+          "internalType": "struct IGovernance.RewardScheduleEntry",
+          "name": "",
+          "type": "tuple"
+        }
+      ],
+      "stateMutability": "view",
+      "type": "function"
+    },
+    {
+      "inputs": [
+        {
+          "internalType": "bytes",
+          "name": "set",
+          "type": "bytes"
+        }
+      ],
+      "name": "setRewardSchedule",
+      "outputs": [],
+      "stateMutability": "nonpayable",
+      "type": "function"
+    },
+    {
+      "inputs": [
+        {
+          "internalType": "bytes4",
+          "name": "interfaceId",
+          "type": "bytes4"
+        }
+      ],
+      "name": "supportsInterface",
+      "outputs": [
+        {
+          "internalType": "bool",
+          "name": "",
+          "type": "bool"
+        }
+      ],
+      "stateMutability": "view",
+      "type": "function"
+    }
+  ],
+  "storageLayout": {
+    "storage": [
+      {
+        "astId": 380,
+        "contract": "DistributorGovernance.sol:DistributorGovernance",
+        "label": "_roles",
+        "offset": 0,
+        "slot": "0",
+        "type": "t_mapping(t_bytes32,t_struct(RoleData)375_storage)"
+      },
+      {
+        "astId": 1210,
+        "contract": "DistributorGovernance.sol:DistributorGovernance",
+        "label": "_roleMembers",
+        "offset": 0,
+        "slot": "1",
+        "type": "t_mapping(t_bytes32,t_struct(AddressSet)969_storage)"
+      },
+      {
+        "astId": 1721,
+        "contract": "DistributorGovernance.sol:DistributorGovernance",
+        "label": "rewardCollector",
+        "offset": 0,
+        "slot": "2",
+        "type": "t_mapping(t_address,t_address)"
+      },
+      {
+        "astId": 1727,
+        "contract": "DistributorGovernance.sol:DistributorGovernance",
+        "label": "blockProducer",
+        "offset": 0,
+        "slot": "3",
+        "type": "t_mapping(t_address,t_bool)"
+      },
+      {
+        "astId": 1730,
+        "contract": "DistributorGovernance.sol:DistributorGovernance",
+        "label": "_rewardSchedule",
+        "offset": 0,
+        "slot": "4",
+        "type": "t_bytes_storage"
+      }
+    ],
+    "types": {
+      "t_address": {
+        "encoding": "inplace",
+        "label": "address",
+        "numberOfBytes": "20"
+      },
+      "t_array(t_bytes32)dyn_storage": {
+        "base": "t_bytes32",
+        "encoding": "dynamic_array",
+        "label": "bytes32[]",
+        "numberOfBytes": "32"
+      },
+      "t_bool": {
+        "encoding": "inplace",
+        "label": "bool",
+        "numberOfBytes": "1"
+      },
+      "t_bytes32": {
+        "encoding": "inplace",
+        "label": "bytes32",
+        "numberOfBytes": "32"
+      },
+      "t_bytes_storage": {
+        "encoding": "bytes",
+        "label": "bytes",
+        "numberOfBytes": "32"
+      },
+      "t_mapping(t_address,t_address)": {
+        "encoding": "mapping",
+        "key": "t_address",
+        "label": "mapping(address => address)",
+        "numberOfBytes": "32",
+        "value": "t_address"
+      },
+      "t_mapping(t_address,t_bool)": {
+        "encoding": "mapping",
+        "key": "t_address",
+        "label": "mapping(address => bool)",
+        "numberOfBytes": "32",
+        "value": "t_bool"
+      },
+      "t_mapping(t_bytes32,t_struct(AddressSet)969_storage)": {
+        "encoding": "mapping",
+        "key": "t_bytes32",
+        "label": "mapping(bytes32 => struct EnumerableSet.AddressSet)",
+        "numberOfBytes": "32",
+        "value": "t_struct(AddressSet)969_storage"
+      },
+      "t_mapping(t_bytes32,t_struct(RoleData)375_storage)": {
+        "encoding": "mapping",
+        "key": "t_bytes32",
+        "label": "mapping(bytes32 => struct AccessControl.RoleData)",
+        "numberOfBytes": "32",
+        "value": "t_struct(RoleData)375_storage"
+      },
+      "t_mapping(t_bytes32,t_uint256)": {
+        "encoding": "mapping",
+        "key": "t_bytes32",
+        "label": "mapping(bytes32 => uint256)",
+        "numberOfBytes": "32",
+        "value": "t_uint256"
+      },
+      "t_struct(AddressSet)969_storage": {
+        "encoding": "inplace",
+        "label": "struct EnumerableSet.AddressSet",
+        "members": [
+          {
+            "astId": 968,
+            "contract": "DistributorGovernance.sol:DistributorGovernance",
+            "label": "_inner",
+            "offset": 0,
+            "slot": "0",
+            "type": "t_struct(Set)698_storage"
+          }
+        ],
+        "numberOfBytes": "64"
+      },
+      "t_struct(RoleData)375_storage": {
+        "encoding": "inplace",
+        "label": "struct AccessControl.RoleData",
+        "members": [
+          {
+            "astId": 372,
+            "contract": "DistributorGovernance.sol:DistributorGovernance",
+            "label": "members",
+            "offset": 0,
+            "slot": "0",
+            "type": "t_mapping(t_address,t_bool)"
+          },
+          {
+            "astId": 374,
+            "contract": "DistributorGovernance.sol:DistributorGovernance",
+            "label": "adminRole",
+            "offset": 0,
+            "slot": "1",
+            "type": "t_bytes32"
+          }
+        ],
+        "numberOfBytes": "64"
+      },
+      "t_struct(Set)698_storage": {
+        "encoding": "inplace",
+        "label": "struct EnumerableSet.Set",
+        "members": [
+          {
+            "astId": 693,
+            "contract": "DistributorGovernance.sol:DistributorGovernance",
+            "label": "_values",
+            "offset": 0,
+            "slot": "0",
+            "type": "t_array(t_bytes32)dyn_storage"
+          },
+          {
+            "astId": 697,
+            "contract": "DistributorGovernance.sol:DistributorGovernance",
+            "label": "_indexes",
+            "offset": 0,
+            "slot": "1",
+            "type": "t_mapping(t_bytes32,t_uint256)"
+          }
+        ],
+        "numberOfBytes": "64"
+      },
+      "t_uint256": {
+        "encoding": "inplace",
+        "label": "uint256",
+        "numberOfBytes": "32"
+      }
+    }
+  }
+}

packages/eden-watcher/src/artifacts/EdenNetwork.json

@@ -0,0 +1,942 @@
+{
+  "abi": [
+    {
+      "anonymous": false,
+      "inputs": [
+        {
+          "indexed": true,
+          "internalType": "address",
+          "name": "newAdmin",
+          "type": "address"
+        },
+        {
+          "indexed": true,
+          "internalType": "address",
+          "name": "oldAdmin",
+          "type": "address"
+        }
+      ],
+      "name": "AdminUpdated",
+      "type": "event"
+    },
+    {
+      "anonymous": false,
+      "inputs": [
+        {
+          "indexed": true,
+          "internalType": "uint8",
+          "name": "slot",
+          "type": "uint8"
+        },
+        {
+          "indexed": true,
+          "internalType": "address",
+          "name": "owner",
+          "type": "address"
+        },
+        {
+          "indexed": true,
+          "internalType": "address",
+          "name": "delegate",
+          "type": "address"
+        },
+        {
+          "indexed": false,
+          "internalType": "uint128",
+          "name": "newBidAmount",
+          "type": "uint128"
+        },
+        {
+          "indexed": false,
+          "internalType": "uint128",
+          "name": "oldBidAmount",
+          "type": "uint128"
+        },
+        {
+          "indexed": false,
+          "internalType": "uint16",
+          "name": "taxNumerator",
+          "type": "uint16"
+        },
+        {
+          "indexed": false,
+          "internalType": "uint16",
+          "name": "taxDenominator",
+          "type": "uint16"
+        }
+      ],
+      "name": "SlotClaimed",
+      "type": "event"
+    },
+    {
+      "anonymous": false,
+      "inputs": [
+        {
+          "indexed": true,
+          "internalType": "uint8",
+          "name": "slot",
+          "type": "uint8"
+        },
+        {
+          "indexed": true,
+          "internalType": "address",
+          "name": "owner",
+          "type": "address"
+        },
+        {
+          "indexed": true,
+          "internalType": "address",
+          "name": "newDelegate",
+          "type": "address"
+        },
+        {
+          "indexed": false,
+          "internalType": "address",
+          "name": "oldDelegate",
+          "type": "address"
+        }
+      ],
+      "name": "SlotDelegateUpdated",
+      "type": "event"
+    },
+    {
+      "anonymous": false,
+      "inputs": [
+        {
+          "indexed": true,
+          "internalType": "address",
+          "name": "staker",
+          "type": "address"
+        },
+        {
+          "indexed": false,
+          "internalType": "uint256",
+          "name": "stakeAmount",
+          "type": "uint256"
+        }
+      ],
+      "name": "Stake",
+      "type": "event"
+    },
+    {
+      "anonymous": false,
+      "inputs": [
+        {
+          "indexed": false,
+          "internalType": "uint16",
+          "name": "newNumerator",
+          "type": "uint16"
+        },
+        {
+          "indexed": false,
+          "internalType": "uint16",
+          "name": "newDenominator",
+          "type": "uint16"
+        },
+        {
+          "indexed": false,
+          "internalType": "uint16",
+          "name": "oldNumerator",
+          "type": "uint16"
+        },
+        {
+          "indexed": false,
+          "internalType": "uint16",
+          "name": "oldDenominator",
+          "type": "uint16"
+        }
+      ],
+      "name": "TaxRateUpdated",
+      "type": "event"
+    },
+    {
+      "anonymous": false,
+      "inputs": [
+        {
+          "indexed": true,
+          "internalType": "address",
+          "name": "staker",
+          "type": "address"
+        },
+        {
+          "indexed": false,
+          "internalType": "uint256",
+          "name": "unstakedAmount",
+          "type": "uint256"
+        }
+      ],
+      "name": "Unstake",
+      "type": "event"
+    },
+    {
+      "anonymous": false,
+      "inputs": [
+        {
+          "indexed": true,
+          "internalType": "address",
+          "name": "withdrawer",
+          "type": "address"
+        },
+        {
+          "indexed": false,
+          "internalType": "uint256",
+          "name": "withdrawalAmount",
+          "type": "uint256"
+        }
+      ],
+      "name": "Withdraw",
+      "type": "event"
+    },
+    {
+      "inputs": [],
+      "name": "MIN_BID",
+      "outputs": [
+        {
+          "internalType": "uint128",
+          "name": "",
+          "type": "uint128"
+        }
+      ],
+      "stateMutability": "view",
+      "type": "function"
+    },
+    {
+      "inputs": [],
+      "name": "admin",
+      "outputs": [
+        {
+          "internalType": "address",
+          "name": "",
+          "type": "address"
+        }
+      ],
+      "stateMutability": "view",
+      "type": "function"
+    },
+    {
+      "inputs": [
+        {
+          "internalType": "uint8",
+          "name": "slot",
+          "type": "uint8"
+        },
+        {
+          "internalType": "uint128",
+          "name": "bid",
+          "type": "uint128"
+        },
+        {
+          "internalType": "address",
+          "name": "delegate",
+          "type": "address"
+        }
+      ],
+      "name": "claimSlot",
+      "outputs": [],
+      "stateMutability": "nonpayable",
+      "type": "function"
+    },
+    {
+      "inputs": [
+        {
+          "internalType": "uint8",
+          "name": "slot",
+          "type": "uint8"
+        },
+        {
+          "internalType": "uint128",
+          "name": "bid",
+          "type": "uint128"
+        },
+        {
+          "internalType": "address",
+          "name": "delegate",
+          "type": "address"
+        },
+        {
+          "internalType": "uint256",
+          "name": "deadline",
+          "type": "uint256"
+        },
+        {
+          "internalType": "uint8",
+          "name": "v",
+          "type": "uint8"
+        },
+        {
+          "internalType": "bytes32",
+          "name": "r",
+          "type": "bytes32"
+        },
+        {
+          "internalType": "bytes32",
+          "name": "s",
+          "type": "bytes32"
+        }
+      ],
+      "name": "claimSlotWithPermit",
+      "outputs": [],
+      "stateMutability": "nonpayable",
+      "type": "function"
+    },
+    {
+      "inputs": [
+        {
+          "internalType": "contract IERC20Extended",
+          "name": "_token",
+          "type": "address"
+        },
+        {
+          "internalType": "contract ILockManager",
+          "name": "_lockManager",
+          "type": "address"
+        },
+        {
+          "internalType": "address",
+          "name": "_admin",
+          "type": "address"
+        },
+        {
+          "internalType": "uint16",
+          "name": "_taxNumerator",
+          "type": "uint16"
+        },
+        {
+          "internalType": "uint16",
+          "name": "_taxDenominator",
+          "type": "uint16"
+        }
+      ],
+      "name": "initialize",
+      "outputs": [],
+      "stateMutability": "nonpayable",
+      "type": "function"
+    },
+    {
+      "inputs": [],
+      "name": "lockManager",
+      "outputs": [
+        {
+          "internalType": "contract ILockManager",
+          "name": "",
+          "type": "address"
+        }
+      ],
+      "stateMutability": "view",
+      "type": "function"
+    },
+    {
+      "inputs": [
+        {
+          "internalType": "address",
+          "name": "",
+          "type": "address"
+        }
+      ],
+      "name": "lockedBalance",
+      "outputs": [
+        {
+          "internalType": "uint128",
+          "name": "",
+          "type": "uint128"
+        }
+      ],
+      "stateMutability": "view",
+      "type": "function"
+    },
+    {
+      "inputs": [
+        {
+          "internalType": "address",
+          "name": "newAdmin",
+          "type": "address"
+        }
+      ],
+      "name": "setAdmin",
+      "outputs": [],
+      "stateMutability": "nonpayable",
+      "type": "function"
+    },
+    {
+      "inputs": [
+        {
+          "internalType": "uint8",
+          "name": "slot",
+          "type": "uint8"
+        },
+        {
+          "internalType": "address",
+          "name": "delegate",
+          "type": "address"
+        }
+      ],
+      "name": "setSlotDelegate",
+      "outputs": [],
+      "stateMutability": "nonpayable",
+      "type": "function"
+    },
+    {
+      "inputs": [
+        {
+          "internalType": "uint16",
+          "name": "numerator",
+          "type": "uint16"
+        },
+        {
+          "internalType": "uint16",
+          "name": "denominator",
+          "type": "uint16"
+        }
+      ],
+      "name": "setTaxRate",
+      "outputs": [],
+      "stateMutability": "nonpayable",
+      "type": "function"
+    },
+    {
+      "inputs": [
+        {
+          "internalType": "uint8",
+          "name": "slot",
+          "type": "uint8"
+        }
+      ],
+      "name": "slotBalance",
+      "outputs": [
+        {
+          "internalType": "uint128",
+          "name": "balance",
+          "type": "uint128"
+        }
+      ],
+      "stateMutability": "view",
+      "type": "function"
+    },
+    {
+      "inputs": [
+        {
+          "internalType": "uint8",
+          "name": "",
+          "type": "uint8"
+        }
+      ],
+      "name": "slotBid",
+      "outputs": [
+        {
+          "internalType": "address",
+          "name": "bidder",
+          "type": "address"
+        },
+        {
+          "internalType": "uint16",
+          "name": "taxNumerator",
+          "type": "uint16"
+        },
+        {
+          "internalType": "uint16",
+          "name": "taxDenominator",
+          "type": "uint16"
+        },
+        {
+          "internalType": "uint64",
+          "name": "periodStart",
+          "type": "uint64"
+        },
+        {
+          "internalType": "uint128",
+          "name": "bidAmount",
+          "type": "uint128"
+        }
+      ],
+      "stateMutability": "view",
+      "type": "function"
+    },
+    {
+      "inputs": [
+        {
+          "internalType": "uint8",
+          "name": "slot",
+          "type": "uint8"
+        }
+      ],
+      "name": "slotCost",
+      "outputs": [
+        {
+          "internalType": "uint128",
+          "name": "",
+          "type": "uint128"
+        }
+      ],
+      "stateMutability": "view",
+      "type": "function"
+    },
+    {
+      "inputs": [
+        {
+          "internalType": "uint8",
+          "name": "slot",
+          "type": "uint8"
+        }
+      ],
+      "name": "slotDelegate",
+      "outputs": [
+        {
+          "internalType": "address",
+          "name": "",
+          "type": "address"
+        }
+      ],
+      "stateMutability": "view",
+      "type": "function"
+    },
+    {
+      "inputs": [
+        {
+          "internalType": "uint8",
+          "name": "",
+          "type": "uint8"
+        }
+      ],
+      "name": "slotExpiration",
+      "outputs": [
+        {
+          "internalType": "uint64",
+          "name": "",
+          "type": "uint64"
+        }
+      ],
+      "stateMutability": "view",
+      "type": "function"
+    },
+    {
+      "inputs": [
+        {
+          "internalType": "uint8",
+          "name": "slot",
+          "type": "uint8"
+        }
+      ],
+      "name": "slotForeclosed",
+      "outputs": [
+        {
+          "internalType": "bool",
+          "name": "",
+          "type": "bool"
+        }
+      ],
+      "stateMutability": "view",
+      "type": "function"
+    },
+    {
+      "inputs": [
+        {
+          "internalType": "uint8",
+          "name": "slot",
+          "type": "uint8"
+        }
+      ],
+      "name": "slotOwner",
+      "outputs": [
+        {
+          "internalType": "address",
+          "name": "",
+          "type": "address"
+        }
+      ],
+      "stateMutability": "view",
+      "type": "function"
+    },
+    {
+      "inputs": [
+        {
+          "internalType": "uint128",
+          "name": "amount",
+          "type": "uint128"
+        }
+      ],
+      "name": "stake",
+      "outputs": [],
+      "stateMutability": "nonpayable",
+      "type": "function"
+    },
+    {
+      "inputs": [
+        {
+          "internalType": "uint128",
+          "name": "amount",
+          "type": "uint128"
+        },
+        {
+          "internalType": "uint256",
+          "name": "deadline",
+          "type": "uint256"
+        },
+        {
+          "internalType": "uint8",
+          "name": "v",
+          "type": "uint8"
+        },
+        {
+          "internalType": "bytes32",
+          "name": "r",
+          "type": "bytes32"
+        },
+        {
+          "internalType": "bytes32",
+          "name": "s",
+          "type": "bytes32"
+        }
+      ],
+      "name": "stakeWithPermit",
+      "outputs": [],
+      "stateMutability": "nonpayable",
+      "type": "function"
+    },
+    {
+      "inputs": [
+        {
+          "internalType": "address",
+          "name": "",
+          "type": "address"
+        }
+      ],
+      "name": "stakedBalance",
+      "outputs": [
+        {
+          "internalType": "uint128",
+          "name": "",
+          "type": "uint128"
+        }
+      ],
+      "stateMutability": "view",
+      "type": "function"
+    },
+    {
+      "inputs": [],
+      "name": "taxDenominator",
+      "outputs": [
+        {
+          "internalType": "uint16",
+          "name": "",
+          "type": "uint16"
+        }
+      ],
+      "stateMutability": "view",
+      "type": "function"
+    },
+    {
+      "inputs": [],
+      "name": "taxNumerator",
+      "outputs": [
+        {
+          "internalType": "uint16",
+          "name": "",
+          "type": "uint16"
+        }
+      ],
+      "stateMutability": "view",
+      "type": "function"
+    },
+    {
+      "inputs": [],
+      "name": "token",
+      "outputs": [
+        {
+          "internalType": "contract IERC20Extended",
+          "name": "",
+          "type": "address"
+        }
+      ],
+      "stateMutability": "view",
+      "type": "function"
+    },
+    {
+      "inputs": [
+        {
+          "internalType": "uint128",
+          "name": "amount",
+          "type": "uint128"
+        }
+      ],
+      "name": "unstake",
+      "outputs": [],
+      "stateMutability": "nonpayable",
+      "type": "function"
+    },
+    {
+      "inputs": [
+        {
+          "internalType": "uint128",
+          "name": "amount",
+          "type": "uint128"
+        }
+      ],
+      "name": "withdraw",
+      "outputs": [],
+      "stateMutability": "nonpayable",
+      "type": "function"
+    }
+  ],
+  "storageLayout": {
+    "storage": [
+      {
+        "astId": 322,
+        "contract": "EdenNetwork.sol:EdenNetwork",
+        "label": "_initialized",
+        "offset": 0,
+        "slot": "0",
+        "type": "t_bool"
+      },
+      {
+        "astId": 325,
+        "contract": "EdenNetwork.sol:EdenNetwork",
+        "label": "_initializing",
+        "offset": 1,
+        "slot": "0",
+        "type": "t_bool"
+      },
+      {
+        "astId": 381,
+        "contract": "EdenNetwork.sol:EdenNetwork",
+        "label": "slotExpiration",
+        "offset": 0,
+        "slot": "1",
+        "type": "t_mapping(t_uint8,t_uint64)"
+      },
+      {
+        "astId": 386,
+        "contract": "EdenNetwork.sol:EdenNetwork",
+        "label": "_slotDelegate",
+        "offset": 0,
+        "slot": "2",
+        "type": "t_mapping(t_uint8,t_address)"
+      },
+      {
+        "astId": 391,
+        "contract": "EdenNetwork.sol:EdenNetwork",
+        "label": "_slotOwner",
+        "offset": 0,
+        "slot": "3",
+        "type": "t_mapping(t_uint8,t_address)"
+      },
+      {
+        "astId": 397,
+        "contract": "EdenNetwork.sol:EdenNetwork",
+        "label": "slotBid",
+        "offset": 0,
+        "slot": "4",
+        "type": "t_mapping(t_uint8,t_struct(Bid)376_storage)"
+      },
+      {
+        "astId": 402,
+        "contract": "EdenNetwork.sol:EdenNetwork",
+        "label": "stakedBalance",
+        "offset": 0,
+        "slot": "5",
+        "type": "t_mapping(t_address,t_uint128)"
+      },
+      {
+        "astId": 407,
+        "contract": "EdenNetwork.sol:EdenNetwork",
+        "label": "lockedBalance",
+        "offset": 0,
+        "slot": "6",
+        "type": "t_mapping(t_address,t_uint128)"
+      },
+      {
+        "astId": 411,
+        "contract": "EdenNetwork.sol:EdenNetwork",
+        "label": "token",
+        "offset": 0,
+        "slot": "7",
+        "type": "t_contract(IERC20Extended)318"
+      },
+      {
+        "astId": 415,
+        "contract": "EdenNetwork.sol:EdenNetwork",
+        "label": "lockManager",
+        "offset": 0,
+        "slot": "8",
+        "type": "t_contract(ILockManager)133"
+      },
+      {
+        "astId": 418,
+        "contract": "EdenNetwork.sol:EdenNetwork",
+        "label": "admin",
+        "offset": 0,
+        "slot": "9",
+        "type": "t_address"
+      },
+      {
+        "astId": 421,
+        "contract": "EdenNetwork.sol:EdenNetwork",
+        "label": "taxNumerator",
+        "offset": 20,
+        "slot": "9",
+        "type": "t_uint16"
+      },
+      {
+        "astId": 424,
+        "contract": "EdenNetwork.sol:EdenNetwork",
+        "label": "taxDenominator",
+        "offset": 22,
+        "slot": "9",
+        "type": "t_uint16"
+      },
+      {
+        "astId": 427,
+        "contract": "EdenNetwork.sol:EdenNetwork",
+        "label": "MIN_BID",
+        "offset": 0,
+        "slot": "10",
+        "type": "t_uint128"
+      },
+      {
+        "astId": 430,
+        "contract": "EdenNetwork.sol:EdenNetwork",
+        "label": "_NOT_ENTERED",
+        "offset": 0,
+        "slot": "11",
+        "type": "t_uint256"
+      },
+      {
+        "astId": 433,
+        "contract": "EdenNetwork.sol:EdenNetwork",
+        "label": "_ENTERED",
+        "offset": 0,
+        "slot": "12",
+        "type": "t_uint256"
+      },
+      {
+        "astId": 436,
+        "contract": "EdenNetwork.sol:EdenNetwork",
+        "label": "_status",
+        "offset": 0,
+        "slot": "13",
+        "type": "t_uint256"
+      }
+    ],
+    "types": {
+      "t_address": {
+        "encoding": "inplace",
+        "label": "address",
+        "numberOfBytes": "20"
+      },
+      "t_bool": {
+        "encoding": "inplace",
+        "label": "bool",
+        "numberOfBytes": "1"
+      },
+      "t_contract(IERC20Extended)318": {
+        "encoding": "inplace",
+        "label": "contract IERC20Extended",
+        "numberOfBytes": "20"
+      },
+      "t_contract(ILockManager)133": {
+        "encoding": "inplace",
+        "label": "contract ILockManager",
+        "numberOfBytes": "20"
+      },
+      "t_mapping(t_address,t_uint128)": {
+        "encoding": "mapping",
+        "key": "t_address",
+        "label": "mapping(address => uint128)",
+        "numberOfBytes": "32",
+        "value": "t_uint128"
+      },
+      "t_mapping(t_uint8,t_address)": {
+        "encoding": "mapping",
+        "key": "t_uint8",
+        "label": "mapping(uint8 => address)",
+        "numberOfBytes": "32",
+        "value": "t_address"
+      },
+      "t_mapping(t_uint8,t_struct(Bid)376_storage)": {
+        "encoding": "mapping",
+        "key": "t_uint8",
+        "label": "mapping(uint8 => struct EdenNetwork.Bid)",
+        "numberOfBytes": "32",
+        "value": "t_struct(Bid)376_storage"
+      },
+      "t_mapping(t_uint8,t_uint64)": {
+        "encoding": "mapping",
+        "key": "t_uint8",
+        "label": "mapping(uint8 => uint64)",
+        "numberOfBytes": "32",
+        "value": "t_uint64"
+      },
+      "t_struct(Bid)376_storage": {
+        "encoding": "inplace",
+        "label": "struct EdenNetwork.Bid",
+        "members": [
+          {
+            "astId": 367,
+            "contract": "EdenNetwork.sol:EdenNetwork",
+            "label": "bidder",
+            "offset": 0,
+            "slot": "0",
+            "type": "t_address"
+          },
+          {
+            "astId": 369,
+            "contract": "EdenNetwork.sol:EdenNetwork",
+            "label": "taxNumerator",
+            "offset": 20,
+            "slot": "0",
+            "type": "t_uint16"
+          },
+          {
+            "astId": 371,
+            "contract": "EdenNetwork.sol:EdenNetwork",
+            "label": "taxDenominator",
+            "offset": 22,
+            "slot": "0",
+            "type": "t_uint16"
+          },
+          {
+            "astId": 373,
+            "contract": "EdenNetwork.sol:EdenNetwork",
+            "label": "periodStart",
+            "offset": 24,
+            "slot": "0",
+            "type": "t_uint64"
+          },
+          {
+            "astId": 375,
+            "contract": "EdenNetwork.sol:EdenNetwork",
+            "label": "bidAmount",
+            "offset": 0,
+            "slot": "1",
+            "type": "t_uint128"
+          }
+        ],
+        "numberOfBytes": "64"
+      },
+      "t_uint128": {
+        "encoding": "inplace",
+        "label": "uint128",
+        "numberOfBytes": "16"
+      },
+      "t_uint16": {
+        "encoding": "inplace",
+        "label": "uint16",
+        "numberOfBytes": "2"
+      },
+      "t_uint256": {
+        "encoding": "inplace",
+        "label": "uint256",
+        "numberOfBytes": "32"
+      },
+      "t_uint64": {
+        "encoding": "inplace",
+        "label": "uint64",
+        "numberOfBytes": "8"
+      },
+      "t_uint8": {
+        "encoding": "inplace",
+        "label": "uint8",
+        "numberOfBytes": "1"
+      }
+    }
+  }
+}

packages/eden-watcher/src/cli/checkpoint.ts

@@ -0,0 +1,69 @@
+//
+// Copyright 2021 Vulcanize, Inc.
+//
+
+import path from 'path';
+import yargs from 'yargs';
+import 'reflect-metadata';
+import debug from 'debug';
+
+import { Config, DEFAULT_CONFIG_PATH, getConfig, initClients } from '@vulcanize/util';
+import { GraphWatcher, Database as GraphDatabase } from '@vulcanize/graph-node';
+
+import { Database } from '../database';
+import { Indexer } from '../indexer';
+
+const log = debug('vulcanize:checkpoint');
+
+const main = async (): Promise<void> => {
+  const argv = await yargs.parserConfiguration({
+    'parse-numbers': false
+  }).options({
+    configFile: {
+      alias: 'f',
+      type: 'string',
+      require: true,
+      demandOption: true,
+      describe: 'Configuration file path (toml)',
+      default: DEFAULT_CONFIG_PATH
+    },
+    address: {
+      type: 'string',
+      require: true,
+      demandOption: true,
+      describe: 'Contract address to create the checkpoint for.'
+    },
+    blockHash: {
+      type: 'string',
+      describe: 'Blockhash at which to create the checkpoint.'
+    }
+  }).argv;
+
+  const config: Config = await getConfig(argv.configFile);
+  const { ethClient, postgraphileClient, ethProvider } = await initClients(config);
+
+  const db = new Database(config.database);
+  await db.init();
+
+  const graphDb = new GraphDatabase(config.database, path.resolve(__dirname, 'entity/*'));
+  await graphDb.init();
+
+  const graphWatcher = new GraphWatcher(graphDb, postgraphileClient, config.server.subgraphPath);
+
+  const indexer = new Indexer(config.server, db, ethClient, postgraphileClient, ethProvider, graphWatcher);
+
+  graphWatcher.setIndexer(indexer);
+  await graphWatcher.init();
+
+  const blockHash = await indexer.processCLICheckpoint(argv.address, argv.blockHash);
+
+  log(`Created a checkpoint for contract ${argv.address} at block-hash ${blockHash}`);
+
+  await db.close();
+};
+
+main().catch(err => {
+  log(err);
+}).finally(() => {
+  process.exit(0);
+});

packages/eden-watcher/src/cli/export-state.ts

@@ -0,0 +1,119 @@
+//
+// Copyright 2021 Vulcanize, Inc.
+//
+
+import assert from 'assert';
+import yargs from 'yargs';
+import 'reflect-metadata';
+import debug from 'debug';
+import fs from 'fs';
+import path from 'path';
+
+import { Config, DEFAULT_CONFIG_PATH, getConfig, initClients } from '@vulcanize/util';
+import { GraphWatcher, Database as GraphDatabase } from '@vulcanize/graph-node';
+import * as codec from '@ipld/dag-cbor';
+
+import { Database } from '../database';
+import { Indexer } from '../indexer';
+
+const log = debug('vulcanize:export-state');
+
+const main = async (): Promise<void> => {
+  const argv = await yargs.parserConfiguration({
+    'parse-numbers': false
+  }).options({
+    configFile: {
+      alias: 'f',
+      type: 'string',
+      require: true,
+      demandOption: true,
+      describe: 'Configuration file path (toml)',
+      default: DEFAULT_CONFIG_PATH
+    },
+    exportFile: {
+      alias: 'o',
+      type: 'string',
+      describe: 'Export file path'
+    }
+  }).argv;
+
+  const config: Config = await getConfig(argv.configFile);
+  const { ethClient, postgraphileClient, ethProvider } = await initClients(config);
+
+  const db = new Database(config.database);
+  await db.init();
+
+  const graphDb = new GraphDatabase(config.database, path.resolve(__dirname, 'entity/*'));
+  await graphDb.init();
+
+  const graphWatcher = new GraphWatcher(graphDb, postgraphileClient, config.server.subgraphPath);
+
+  const indexer = new Indexer(config.server, db, ethClient, postgraphileClient, ethProvider, graphWatcher);
+
+  graphWatcher.setIndexer(indexer);
+  await graphWatcher.init();
+
+  const exportData: any = {
+    snapshotBlock: {},
+    contracts: [],
+    ipldCheckpoints: []
+  };
+
+  const contracts = await db.getContracts({});
+
+  // Get latest canonical block.
+  const block = await indexer.getLatestCanonicalBlock();
+  assert(block);
+
+  // Export snapshot block.
+  exportData.snapshotBlock = {
+    blockNumber: block.blockNumber,
+    blockHash: block.blockHash
+  };
+
+  // Export contracts and checkpoints.
+  for (const contract of contracts) {
+    exportData.contracts.push({
+      address: contract.address,
+      kind: contract.kind,
+      checkpoint: contract.checkpoint,
+      startingBlock: block.blockNumber
+    });
+
+    // Create and export checkpoint if checkpointing is on for the contract.
+    if (contract.checkpoint) {
+      await indexer.createCheckpoint(contract.address, block.blockHash);
+
+      const ipldBlock = await indexer.getLatestIPLDBlock(contract.address, 'checkpoint', block.blockNumber);
+      assert(ipldBlock);
+
+      const data = codec.decode(Buffer.from(ipldBlock.data)) as any;
+
+      exportData.ipldCheckpoints.push({
+        contractAddress: ipldBlock.contractAddress,
+        cid: ipldBlock.cid,
+        kind: ipldBlock.kind,
+        data
+      });
+    }
+  }
+
+  if (argv.exportFile) {
+    const encodedExportData = codec.encode(exportData);
+
+    const filePath = path.resolve(argv.exportFile);
+    const fileDir = path.dirname(filePath);
+
+    if (!fs.existsSync(fileDir)) fs.mkdirSync(fileDir, { recursive: true });
+
+    fs.writeFileSync(filePath, encodedExportData);
+  } else {
+    log(exportData);
+  }
+};
+
+main().catch(err => {
+  log(err);
+}).finally(() => {
+  process.exit(0);
+});

packages/eden-watcher/src/cli/import-state.ts

@@ -0,0 +1,118 @@
+//
+// Copyright 2021 Vulcanize, Inc.
+//
+
+import assert from 'assert';
+import 'reflect-metadata';
+import yargs from 'yargs';
+import { hideBin } from 'yargs/helpers';
+import debug from 'debug';
+import { PubSub } from 'apollo-server-express';
+import fs from 'fs';
+import path from 'path';
+
+import { getConfig, fillBlocks, JobQueue, DEFAULT_CONFIG_PATH, Config, initClients } from '@vulcanize/util';
+import { GraphWatcher, Database as GraphDatabase } from '@vulcanize/graph-node';
+import * as codec from '@ipld/dag-cbor';
+
+import { Database } from '../database';
+import { Indexer } from '../indexer';
+import { EventWatcher } from '../events';
+import { IPLDBlock } from '../entity/IPLDBlock';
+
+const log = debug('vulcanize:import-state');
+
+export const main = async (): Promise<any> => {
+  const argv = await yargs(hideBin(process.argv)).parserConfiguration({
+    'parse-numbers': false
+  }).options({
+    configFile: {
+      alias: 'f',
+      type: 'string',
+      demandOption: true,
+      describe: 'configuration file path (toml)',
+      default: DEFAULT_CONFIG_PATH
+    },
+    importFile: {
+      alias: 'i',
+      type: 'string',
+      demandOption: true,
+      describe: 'Import file path (JSON)'
+    }
+  }).argv;
+
+  const config: Config = await getConfig(argv.configFile);
+  const { ethClient, postgraphileClient, ethProvider } = await initClients(config);
+
+  const db = new Database(config.database);
+  await db.init();
+
+  const graphDb = new GraphDatabase(config.database, path.resolve(__dirname, 'entity/*'));
+  await graphDb.init();
+
+  const graphWatcher = new GraphWatcher(graphDb, postgraphileClient, config.server.subgraphPath);
+
+  // Note: In-memory pubsub works fine for now, as each watcher is a single process anyway.
+  // Later: https://www.apollographql.com/docs/apollo-server/data/subscriptions/#production-pubsub-libraries
+  const pubsub = new PubSub();
+  const indexer = new Indexer(config.server, db, ethClient, postgraphileClient, ethProvider, graphWatcher);
+
+  graphWatcher.setIndexer(indexer);
+  await graphWatcher.init();
+
+  const jobQueueConfig = config.jobQueue;
+  assert(jobQueueConfig, 'Missing job queue config');
+
+  const { dbConnectionString, maxCompletionLagInSecs } = jobQueueConfig;
+  assert(dbConnectionString, 'Missing job queue db connection string');
+
+  const jobQueue = new JobQueue({ dbConnectionString, maxCompletionLag: maxCompletionLagInSecs });
+  await jobQueue.start();
+
+  const eventWatcher = new EventWatcher(config.upstream, ethClient, postgraphileClient, indexer, pubsub, jobQueue);
+
+  // Import data.
+  const importFilePath = path.resolve(argv.importFile);
+  const encodedImportData = fs.readFileSync(importFilePath);
+  const importData = codec.decode(Buffer.from(encodedImportData)) as any;
+
+  // Fill the snapshot block.
+  await fillBlocks(
+    jobQueue,
+    indexer,
+    postgraphileClient,
+    eventWatcher,
+    config.upstream.ethServer.blockDelayInMilliSecs,
+    {
+      startBlock: importData.snapshotBlock.blockNumber,
+      endBlock: importData.snapshotBlock.blockNumber
+    }
+  );
+
+  // Fill the Contracts.
+  for (const contract of importData.contracts) {
+    await db.saveContract(contract.address, contract.kind, contract.checkpoint, contract.startingBlock);
+  }
+
+  // Get the snapshot block.
+  const block = await indexer.getBlockProgress(importData.snapshotBlock.blockHash);
+  assert(block);
+
+  // Fill the IPLDBlocks.
+  for (const checkpoint of importData.ipldCheckpoints) {
+    let ipldBlock = new IPLDBlock();
+
+    ipldBlock = Object.assign(ipldBlock, checkpoint);
+    ipldBlock.block = block;
+
+    ipldBlock.data = Buffer.from(codec.encode(ipldBlock.data));
+
+    await db.saveOrUpdateIPLDBlock(ipldBlock);
+  }
+};
+
+main().catch(err => {
+  log(err);
+}).finally(() => {
+  process.exit(0);
+});

packages/eden-watcher/src/cli/inspect-cid.ts

@@ -0,0 +1,68 @@
+//
+// Copyright 2021 Vulcanize, Inc.
+//
+
+import path from 'path';
+import assert from 'assert';
+import yargs from 'yargs';
+import 'reflect-metadata';
+import debug from 'debug';
+import util from 'util';
+
+import { Config, DEFAULT_CONFIG_PATH, getConfig, initClients } from '@vulcanize/util';
+import { GraphWatcher, Database as GraphDatabase } from '@vulcanize/graph-node';
+
+import { Database } from '../database';
+import { Indexer } from '../indexer';
+
+const log = debug('vulcanize:inspect-cid');
+
+const main = async (): Promise<void> => {
+  const argv = await yargs.parserConfiguration({
+    'parse-numbers': false
+  }).options({
+    configFile: {
+      alias: 'f',
+      type: 'string',
+      require: true,
+      demandOption: true,
+      describe: 'Configuration file path (toml)',
+      default: DEFAULT_CONFIG_PATH
+    },
+    cid: {
+      alias: 'c',
+      type: 'string',
+      demandOption: true,
+      describe: 'CID to be inspected'
+    }
+  }).argv;
+
+  const config: Config = await getConfig(argv.configFile);
+  const { ethClient, postgraphileClient, ethProvider } = await initClients(config);
+
+  const db = new Database(config.database);
+  await db.init();
+
+  const graphDb = new GraphDatabase(config.database, path.resolve(__dirname, 'entity/*'));
+  await graphDb.init();
+
+  const graphWatcher = new GraphWatcher(graphDb, postgraphileClient, config.server.subgraphPath);
+
+  const indexer = new Indexer(config.server, db, ethClient, postgraphileClient, ethProvider, graphWatcher);
+
+  graphWatcher.setIndexer(indexer);
+  await graphWatcher.init();
+
+  const ipldBlock = await indexer.getIPLDBlockByCid(argv.cid);
+  assert(ipldBlock, 'IPLDBlock for the provided CID doesn\'t exist.');
+
+  const ipldData = await indexer.getIPLDData(ipldBlock);
+
+  log(util.inspect(ipldData, false, null));
+};
+
+main().catch(err => {
+  log(err);
+}).finally(() => {
+  process.exit(0);
+});

packages/eden-watcher/src/cli/reset-cmds/job-queue.ts

@@ -0,0 +1,22 @@
+//
+// Copyright 2021 Vulcanize, Inc.
+//
+
+import debug from 'debug';
+
+import { getConfig, resetJobs } from '@vulcanize/util';
+
+const log = debug('vulcanize:reset-job-queue');
+
+export const command = 'job-queue';
+
+export const desc = 'Reset job queue';
+
+export const builder = {};
+
+export const handler = async (argv: any): Promise<void> => {
+  const config = await getConfig(argv.configFile);
+  await resetJobs(config);
+
+  log('Job queue reset successfully');
+};

packages/eden-watcher/src/cli/reset-cmds/state.ts

@@ -0,0 +1,91 @@
+//
+// Copyright 2021 Vulcanize, Inc.
+//
+
+import path from 'path';
+import debug from 'debug';
+import { MoreThan } from 'typeorm';
+import assert from 'assert';
+
+import { getConfig, initClients, resetJobs } from '@vulcanize/util';
+import { GraphWatcher, Database as GraphDatabase } from '@vulcanize/graph-node';
+
+import { Database } from '../../database';
+import { Indexer } from '../../indexer';
+import { BlockProgress } from '../../entity/BlockProgress';
+
+const log = debug('vulcanize:reset-state');
+
+export const command = 'state';
+
+export const desc = 'Reset state to block number';
+
+export const builder = {
+  blockNumber: {
+    type: 'number'
+  }
+};
+
+export const handler = async (argv: any): Promise<void> => {
+  const config = await getConfig(argv.configFile);
+  await resetJobs(config);
+  const { ethClient, postgraphileClient, ethProvider } = await initClients(config);
+
+  // Initialize database.
+  const db = new Database(config.database);
+  await db.init();
+
+  const graphDb = new GraphDatabase(config.database, path.resolve(__dirname, 'entity/*'));
+  await graphDb.init();
+
+  const graphWatcher = new GraphWatcher(graphDb, postgraphileClient, config.server.subgraphPath);
+
+  const indexer = new Indexer(config.server, db, ethClient, postgraphileClient, ethProvider, graphWatcher);
+
+  graphWatcher.setIndexer(indexer);
+  await graphWatcher.init();
+
+  const syncStatus = await indexer.getSyncStatus();
+  assert(syncStatus, 'Missing syncStatus');
+
+  const hooksStatus = await indexer.getHookStatus();
+  assert(hooksStatus, 'Missing hooksStatus');
+
+  const blockProgresses = await indexer.getBlocksAtHeight(argv.blockNumber, false);
+  assert(blockProgresses.length, `No blocks at specified block number ${argv.blockNumber}`);
+  assert(!blockProgresses.some(block => !block.isComplete), `Incomplete block at block number ${argv.blockNumber} with unprocessed events`);
+  const [blockProgress] = blockProgresses;
+
+  const dbTx = await db.createTransactionRunner();
+
+  try {
+    const entities = [BlockProgress];
+
+    const removeEntitiesPromise = entities.map(async entityClass => {
+      return db.removeEntities<any>(dbTx, entityClass, { blockNumber: MoreThan(argv.blockNumber) });
+    });
+
+    await Promise.all(removeEntitiesPromise);
+
+    if (syncStatus.latestIndexedBlockNumber > blockProgress.blockNumber) {
+      await indexer.updateSyncStatusIndexedBlock(blockProgress.blockHash, blockProgress.blockNumber, true);
+    }
+
+    if (syncStatus.latestCanonicalBlockNumber > blockProgress.blockNumber) {
+      await indexer.updateSyncStatusCanonicalBlock(blockProgress.blockHash, blockProgress.blockNumber, true);
+    }
+
+    if (hooksStatus.latestProcessedBlockNumber > blockProgress.blockNumber) {
+      await indexer.updateHookStatusProcessedBlock(blockProgress.blockNumber, true);
+    }
+
+    dbTx.commitTransaction();
+  } catch (error) {
+    await dbTx.rollbackTransaction();
+    throw error;
+  } finally {
+    await dbTx.release();
+  }
+
+  log('Reset state successfully');
+};

packages/eden-watcher/src/cli/reset.ts

@@ -0,0 +1,24 @@
+//
+// Copyright 2021 Vulcanize, Inc.
+//
+
+import 'reflect-metadata';
+import debug from 'debug';
+
+import { getResetYargs } from '@vulcanize/util';
+
+const log = debug('vulcanize:reset');
+
+const main = async () => {
+  return getResetYargs()
+    .commandDir('reset-cmds', { extensions: ['ts', 'js'], exclude: /([a-zA-Z0-9\s_\\.\-:])+(.d.ts)$/ })
+    .demandCommand(1)
+    .help()
+    .argv;
+};
+
+main().then(() => {
+  process.exit();
+}).catch(err => {
+  log(err);
+});

packages/eden-watcher/src/cli/watch-contract.ts

@@ -0,0 +1,79 @@
+//
+// Copyright 2021 Vulcanize, Inc.
+//
+
+import path from 'path';
+import yargs from 'yargs';
+import 'reflect-metadata';
+import debug from 'debug';
+
+import { Config, DEFAULT_CONFIG_PATH, getConfig, initClients } from '@vulcanize/util';
+import { GraphWatcher, Database as GraphDatabase } from '@vulcanize/graph-node';
+
+import { Database } from '../database';
+import { Indexer } from '../indexer';
+
+const log = debug('vulcanize:watch-contract');
+
+const main = async (): Promise<void> => {
+  const argv = await yargs.parserConfiguration({
+    'parse-numbers': false
+  }).options({
+    configFile: {
+      alias: 'f',
+      type: 'string',
+      require: true,
+      demandOption: true,
+      describe: 'Configuration file path (toml)',
+      default: DEFAULT_CONFIG_PATH
+    },
+    address: {
+      type: 'string',
+      require: true,
+      demandOption: true,
+      describe: 'Address of the deployed contract'
+    },
+    kind: {
+      type: 'string',
+      require: true,
+      demandOption: true,
+      describe: 'Kind of contract'
+    },
+    checkpoint: {
+      type: 'boolean',
+      require: true,
+      demandOption: true,
+      describe: 'Turn checkpointing on'
+    },
+    startingBlock: {
+      type: 'number',
+      describe: 'Starting block'
+    }
+  }).argv;
+
+  const config: Config = await getConfig(argv.configFile);
+  const { ethClient, postgraphileClient, ethProvider } = await initClients(config);
+
+  const db = new Database(config.database);
+  await db.init();
+
+  const graphDb = new GraphDatabase(config.database, path.resolve(__dirname, 'entity/*'));
+  await graphDb.init();
+
+  const graphWatcher = new GraphWatcher(graphDb, postgraphileClient, config.server.subgraphPath);
+
+  const indexer = new Indexer(config.server, db, ethClient, postgraphileClient, ethProvider, graphWatcher);
+
+  graphWatcher.setIndexer(indexer);
+  await graphWatcher.init();
+
+  await indexer.watchContract(argv.address, argv.kind, argv.checkpoint, argv.startingBlock);
+
+  await db.close();
+};
+
+main().catch(err => {
+  log(err);
+}).finally(() => {
+  process.exit(0);
+});

packages/eden-watcher/src/client.ts

@@ -0,0 +1,55 @@
+//
+// Copyright 2021 Vulcanize, Inc.
+//
+
+import { gql } from '@apollo/client/core';
+import { GraphQLClient, GraphQLConfig } from '@vulcanize/ipld-eth-client';
+
+import { queries, mutations, subscriptions } from './gql';
+
+export class Client {
+  _config: GraphQLConfig;
+  _client: GraphQLClient;
+
+  constructor (config: GraphQLConfig) {
+    this._config = config;
+
+    this._client = new GraphQLClient(config);
+  }
+
+  async getEvents (blockHash: string, contractAddress: string, name: string): Promise<any> {
+    const { events } = await this._client.query(
+      gql(queries.events),
+      { blockHash, contractAddress, name }
+    );
+
+    return events;
+  }
+
+  async getEventsInRange (fromBlockNumber: number, toBlockNumber: number): Promise<any> {
+    const { eventsInRange } = await this._client.query(
+      gql(queries.eventsInRange),
+      { fromBlockNumber, toBlockNumber }
+    );
+
+    return eventsInRange;
+  }
+
+  async watchContract (contractAddress: string, startingBlock?: number): Promise<any> {
+    const { watchContract } = await this._client.mutate(
+      gql(mutations.watchContract),
+      { contractAddress, startingBlock }
+    );
+
+    return watchContract;
+  }
+
+  async watchEvents (onNext: (value: any) => void): Promise<ZenObservable.Subscription> {
+    return this._client.subscribe(
+      gql(subscriptions.onEvent),
+      ({ data }) => {
+        onNext(data.onEvent);
+      }
+    );
+  }
+}

packages/eden-watcher/src/database.ts

@@ -0,0 +1,313 @@
+//
+// Copyright 2021 Vulcanize, Inc.
+//
+
+import assert from 'assert';
+import { Connection, ConnectionOptions, DeepPartial, FindConditions, QueryRunner, FindManyOptions, MoreThan } from 'typeorm';
+import path from 'path';
+
+import { Database as BaseDatabase, MAX_REORG_DEPTH, DatabaseInterface } from '@vulcanize/util';
+
+import { Contract } from './entity/Contract';
+import { Event } from './entity/Event';
+import { SyncStatus } from './entity/SyncStatus';
+import { HookStatus } from './entity/HookStatus';
+import { BlockProgress } from './entity/BlockProgress';
+import { IPLDBlock } from './entity/IPLDBlock';
+
+export class Database implements DatabaseInterface {
+  _config: ConnectionOptions;
+  _conn!: Connection;
+  _baseDatabase: BaseDatabase;
+
+  constructor (config: ConnectionOptions) {
+    assert(config);
+
+    this._config = {
+      ...config,
+      entities: [path.join(__dirname, 'entity/*')]
+    };
+
+    this._baseDatabase = new BaseDatabase(this._config);
+  }
+
+  async init (): Promise<void> {
+    this._conn = await this._baseDatabase.init();
+  }
+
+  async close (): Promise<void> {
+    return this._baseDatabase.close();
+  }
+
+  async getIPLDBlocks (where: FindConditions<IPLDBlock>): Promise<IPLDBlock[]> {
+    const repo = this._conn.getRepository(IPLDBlock);
+    return repo.find({ where, relations: ['block'] });
+  }
+
+  async getLatestIPLDBlock (contractAddress: string, kind: string | null, blockNumber?: number): Promise<IPLDBlock | undefined> {
+    const repo = this._conn.getRepository(IPLDBlock);
+
+    let queryBuilder = repo.createQueryBuilder('ipld_block')
+      .leftJoinAndSelect('ipld_block.block', 'block')
+      .where('block.is_pruned = false')
+      .andWhere('ipld_block.contract_address = :contractAddress', { contractAddress })
+      .orderBy('block.block_number', 'DESC');
+
+    // Filter out blocks after the provided block number.
+    if (blockNumber) {
+      queryBuilder.andWhere('block.block_number <= :blockNumber', { blockNumber });
+    }
+
+    // Filter using kind if specified else order by id to give preference to checkpoint.
+    queryBuilder = kind
+      ? queryBuilder.andWhere('ipld_block.kind = :kind', { kind })
+      : queryBuilder.andWhere('ipld_block.kind != :kind', { kind: 'diff_staged' })
+        .addOrderBy('ipld_block.id', 'DESC');
+
+    return queryBuilder.getOne();
+  }
+
+  async getPrevIPLDBlock (queryRunner: QueryRunner, blockHash: string, contractAddress: string, kind?: string): Promise<IPLDBlock | undefined> {
+    const heirerchicalQuery = `
+      WITH RECURSIVE cte_query AS
+      (
+        SELECT
+          b.block_hash,
+          b.block_number,
+          b.parent_hash,
+          1 as depth,
+          i.id,
+          i.kind
+        FROM
+          block_progress b
+          LEFT JOIN
+            ipld_block i ON i.block_id = b.id
+            AND i.contract_address = $2
+        WHERE
+          b.block_hash = $1
+        UNION ALL
+          SELECT
+            b.block_hash,
+            b.block_number,
+            b.parent_hash,
+            c.depth + 1,
+            i.id,
+            i.kind
+          FROM
+            block_progress b
+            LEFT JOIN
+              ipld_block i
+              ON i.block_id = b.id
+              AND i.contract_address = $2
+            INNER JOIN
+              cte_query c ON c.parent_hash = b.block_hash
+            WHERE
+              c.depth < $3
+      )
+      SELECT
+        block_number, id, kind
+      FROM
+        cte_query
+      ORDER BY block_number DESC, id DESC
+    `;
+
+    // Fetching block and id for previous IPLDBlock in frothy region.
+    const queryResult = await queryRunner.query(heirerchicalQuery, [blockHash, contractAddress, MAX_REORG_DEPTH]);
+    const latestRequiredResult = kind
+      ? queryResult.find((obj: any) => obj.kind === kind)
+      : queryResult.find((obj: any) => obj.id);
+
+    let result: IPLDBlock | undefined;
+    if (latestRequiredResult) {
+      result = await queryRunner.manager.findOne(IPLDBlock, { id: latestRequiredResult.id }, { relations: ['block'] });
+    } else {
+      // If IPLDBlock not found in frothy region get latest IPLDBlock in the pruned region.
+      // Filter out IPLDBlocks from pruned blocks.
+      const canonicalBlockNumber = queryResult.pop().block_number + 1;
+
+      let queryBuilder = queryRunner.manager.createQueryBuilder(IPLDBlock, 'ipld_block')
+        .leftJoinAndSelect('ipld_block.block', 'block')
+        .where('block.is_pruned = false')
+        .andWhere('ipld_block.contract_address = :contractAddress', { contractAddress })
+        .andWhere('block.block_number <= :canonicalBlockNumber', { canonicalBlockNumber })
+        .orderBy('block.block_number', 'DESC');
+
+      // Filter using kind if specified else order by id to give preference to checkpoint.
+      queryBuilder = kind
+        ? queryBuilder.andWhere('ipld_block.kind = :kind', { kind })
+        : queryBuilder.addOrderBy('ipld_block.id', 'DESC');
+
+      result = await queryBuilder.getOne();
+    }
+
+    return result;
+  }
+
+  // Fetch all diff IPLDBlocks after the specified checkpoint.
+  async getDiffIPLDBlocksByCheckpoint (contractAddress: string, checkpointBlockNumber: number): Promise<IPLDBlock[]> {
+    const repo = this._conn.getRepository(IPLDBlock);
+
+    return repo.find({
+      relations: ['block'],
+      where: {
+        contractAddress,
+        kind: 'diff',
+        block: {
+          isPruned: false,
+          blockNumber: MoreThan(checkpointBlockNumber)
+        }
+      },
+      order: {
+        block: 'ASC'
+      }
+    });
+  }
+
+  async saveOrUpdateIPLDBlock (ipldBlock: IPLDBlock): Promise<IPLDBlock> {
+    const repo = this._conn.getRepository(IPLDBlock);
+    return repo.save(ipldBlock);
+  }
+
+  async getHookStatus (queryRunner: QueryRunner): Promise<HookStatus | undefined> {
+    const repo = queryRunner.manager.getRepository(HookStatus);
+
+    return repo.findOne();
+  }
+
+  async updateHookStatusProcessedBlock (queryRunner: QueryRunner, blockNumber: number, force?: boolean): Promise<HookStatus> {
+    const repo = queryRunner.manager.getRepository(HookStatus);
+    let entity = await repo.findOne();
+
+    if (!entity) {
+      entity = repo.create({
+        latestProcessedBlockNumber: blockNumber
+      });
+    }
+
+    if (force || blockNumber > entity.latestProcessedBlockNumber) {
+      entity.latestProcessedBlockNumber = blockNumber;
+    }
+
+    return repo.save(entity);
+  }
+
+  async getContracts (where: FindConditions<Contract>): Promise<Contract[]> {
+    const repo = this._conn.getRepository(Contract);
+    return repo.find({ where });
+  }
+
+  async getContract (address: string): Promise<Contract | undefined> {
+    const repo = this._conn.getRepository(Contract);
+
+    return this._baseDatabase.getContract(repo, address);
+  }
+
+  async createTransactionRunner (): Promise<QueryRunner> {
+    return this._baseDatabase.createTransactionRunner();
+  }
+
+  async getProcessedBlockCountForRange (fromBlockNumber: number, toBlockNumber: number): Promise<{ expected: number, actual: number }> {
+    const repo = this._conn.getRepository(BlockProgress);
+
+    return this._baseDatabase.getProcessedBlockCountForRange(repo, fromBlockNumber, toBlockNumber);
+  }
+
+  async getEventsInRange (fromBlockNumber: number, toBlockNumber: number): Promise<Array<Event>> {
+    const repo = this._conn.getRepository(Event);
+
+    return this._baseDatabase.getEventsInRange(repo, fromBlockNumber, toBlockNumber);
+  }
+
+  async saveEventEntity (queryRunner: QueryRunner, entity: Event): Promise<Event> {
+    const repo = queryRunner.manager.getRepository(Event);
+    return this._baseDatabase.saveEventEntity(repo, entity);
+  }
+
+  async getBlockEvents (blockHash: string, where: FindConditions<Event>): Promise<Event[]> {
+    const repo = this._conn.getRepository(Event);
+
+    return this._baseDatabase.getBlockEvents(repo, blockHash, where);
+  }
+
+  async saveEvents (queryRunner: QueryRunner, block: DeepPartial<BlockProgress>, events: DeepPartial<Event>[]): Promise<void> {
+    const blockRepo = queryRunner.manager.getRepository(BlockProgress);
+    const eventRepo = queryRunner.manager.getRepository(Event);
+
+    return this._baseDatabase.saveEvents(blockRepo, eventRepo, block, events);
+  }
+
+  async saveContract (address: string, kind: string, checkpoint: boolean, startingBlock: number): Promise<void> {
+    await this._conn.transaction(async (tx) => {
+      const repo = tx.getRepository(Contract);
+
+      return this._baseDatabase.saveContract(repo, address, kind, checkpoint, startingBlock);
+    });
+  }
+
+  async updateSyncStatusIndexedBlock (queryRunner: QueryRunner, blockHash: string, blockNumber: number, force = false): Promise<SyncStatus> {
+    const repo = queryRunner.manager.getRepository(SyncStatus);
+
+    return this._baseDatabase.updateSyncStatusIndexedBlock(repo, blockHash, blockNumber, force);
+  }
+
+  async updateSyncStatusCanonicalBlock (queryRunner: QueryRunner, blockHash: string, blockNumber: number, force = false): Promise<SyncStatus> {
+    const repo = queryRunner.manager.getRepository(SyncStatus);
+
+    return this._baseDatabase.updateSyncStatusCanonicalBlock(repo, blockHash, blockNumber, force);
+  }
+
+  async updateSyncStatusChainHead (queryRunner: QueryRunner, blockHash: string, blockNumber: number): Promise<SyncStatus> {
+    const repo = queryRunner.manager.getRepository(SyncStatus);
+
+    return this._baseDatabase.updateSyncStatusChainHead(repo, blockHash, blockNumber);
+  }
+
+  async getSyncStatus (queryRunner: QueryRunner): Promise<SyncStatus | undefined> {
+    const repo = queryRunner.manager.getRepository(SyncStatus);
+
+    return this._baseDatabase.getSyncStatus(repo);
+  }
+
+  async getEvent (id: string): Promise<Event | undefined> {
+    const repo = this._conn.getRepository(Event);
+
+    return this._baseDatabase.getEvent(repo, id);
+  }
+
+  async getBlocksAtHeight (height: number, isPruned: boolean): Promise<BlockProgress[]> {
+    const repo = this._conn.getRepository(BlockProgress);
+
+    return this._baseDatabase.getBlocksAtHeight(repo, height, isPruned);
+  }
+
+  async markBlocksAsPruned (queryRunner: QueryRunner, blocks: BlockProgress[]): Promise<void> {
+    const repo = queryRunner.manager.getRepository(BlockProgress);
+
+    return this._baseDatabase.markBlocksAsPruned(repo, blocks);
+  }
+
+  async getBlockProgress (blockHash: string): Promise<BlockProgress | undefined> {
+    const repo = this._conn.getRepository(BlockProgress);
+    return this._baseDatabase.getBlockProgress(repo, blockHash);
+  }
+
+  async updateBlockProgress (queryRunner: QueryRunner, blockHash: string, lastProcessedEventIndex: number): Promise<void> {
+    const repo = queryRunner.manager.getRepository(BlockProgress);
+
+    return this._baseDatabase.updateBlockProgress(repo, blockHash, lastProcessedEventIndex);
+  }
+
+  async removeEntities<Entity> (queryRunner: QueryRunner, entity: new () => Entity, findConditions?: FindManyOptions<Entity> | FindConditions<Entity>): Promise<void> {
+    return this._baseDatabase.removeEntities(queryRunner, entity, findConditions);
+  }
+
+  async getAncestorAtDepth (blockHash: string, depth: number): Promise<string> {
+    return this._baseDatabase.getAncestorAtDepth(blockHash, depth);
+  }
+
+  _getPropertyColumnMapForEntity (entityName: string): Map<string, string> {
+    return this._conn.getMetadata(entityName).ownColumns.reduce((acc, curr) => {
+      return acc.set(curr.propertyName, curr.databaseName);
+    }, new Map<string, string>());
+  }
+}

packages/eden-watcher/src/entity/Account.ts

@@ -0,0 +1,32 @@
+//
+// Copyright 2021 Vulcanize, Inc.
+//
+
+import { Entity, PrimaryColumn, Column, ManyToOne } from 'typeorm';
+import { Claim } from './Claim';
+import { Slash } from './Slash';
+import { bigintTransformer } from '@vulcanize/util';
+
+@Entity()
+export class Account {
+  @PrimaryColumn('varchar')
+  id!: string;
+
+  @PrimaryColumn('varchar', { length: 66 })
+  blockHash!: string;
+
+  @Column('integer')
+  blockNumber!: number;
+
+  @Column('bigint', { transformer: bigintTransformer })
+  totalClaimed!: bigint;
+
+  @Column('bigint', { transformer: bigintTransformer })
+  totalSlashed!: bigint;
+
+  @ManyToOne(() => Claim)
+  claims!: Claim;
+
+  @ManyToOne(() => Slash)
+  slashes!: Slash;
+}

packages/eden-watcher/src/entity/Block.ts

@@ -0,0 +1,63 @@
+//
+// Copyright 2021 Vulcanize, Inc.
+//
+
+import { Entity, PrimaryColumn, Column } from 'typeorm';
+import { bigintTransformer } from '@vulcanize/util';
+
+@Entity()
+export class Block {
+  @PrimaryColumn('varchar')
+  id!: string;
+
+  @PrimaryColumn('varchar', { length: 66 })
+  blockHash!: string;
+
+  @Column('integer')
+  blockNumber!: number;
+
+  @Column('boolean')
+  fromActiveProducer!: boolean;
+
+  @Column('varchar')
+  hash!: string;
+
+  @Column('varchar')
+  parentHash!: string;
+
+  @Column('varchar')
+  unclesHash!: string;
+
+  @Column('varchar')
+  author!: string;
+
+  @Column('varchar')
+  stateRoot!: string;
+
+  @Column('varchar')
+  transactionsRoot!: string;
+
+  @Column('varchar')
+  receiptsRoot!: string;
+
+  @Column('bigint', { transformer: bigintTransformer })
+  number!: bigint;
+
+  @Column('bigint', { transformer: bigintTransformer })
+  gasUsed!: bigint;
+
+  @Column('bigint', { transformer: bigintTransformer })
+  gasLimit!: bigint;
+
+  @Column('bigint', { transformer: bigintTransformer })
+  timestamp!: bigint;
+
+  @Column('bigint', { transformer: bigintTransformer })
+  difficulty!: bigint;
+
+  @Column('bigint', { transformer: bigintTransformer })
+  totalDifficulty!: bigint;
+
+  @Column('bigint', { nullable: true, transformer: bigintTransformer })
+  size!: bigint;
+}

packages/eden-watcher/src/entity/BlockProgress.ts

@@ -0,0 +1,45 @@
+//
+// Copyright 2021 Vulcanize, Inc.
+//
+
+import { Entity, PrimaryGeneratedColumn, Column, Index } from 'typeorm';
+import { BlockProgressInterface } from '@vulcanize/util';
+
+@Entity()
+@Index(['blockHash'], { unique: true })
+@Index(['blockNumber'])
+@Index(['parentHash'])
+export class BlockProgress implements BlockProgressInterface {
+  @PrimaryGeneratedColumn()
+  id!: number;
+
+  @Column('varchar')
+  cid!: string;
+
+  @Column('varchar', { length: 66 })
+  blockHash!: string;
+
+  @Column('varchar', { length: 66 })
+  parentHash!: string;
+
+  @Column('integer')
+  blockNumber!: number;
+
+  @Column('integer')
+  blockTimestamp!: number;
+
+  @Column('integer')
+  numEvents!: number;
+
+  @Column('integer')
+  numProcessedEvents!: number;
+
+  @Column('integer')
+  lastProcessedEventIndex!: number;
+
+  @Column('boolean')
+  isComplete!: boolean;
+
+  @Column('boolean', { default: false })
+  isPruned!: boolean;
+}

packages/eden-watcher/src/entity/Claim.ts

@@ -0,0 +1,34 @@
+//
+// Copyright 2021 Vulcanize, Inc.
+//
+
+import { Entity, PrimaryColumn, Column, ManyToOne } from 'typeorm';
+import { Account } from './Account';
+import { bigintTransformer } from '@vulcanize/util';
+
+@Entity()
+export class Claim {
+  @PrimaryColumn('varchar')
+  id!: string;
+
+  @PrimaryColumn('varchar', { length: 66 })
+  blockHash!: string;
+
+  @Column('integer')
+  blockNumber!: number;
+
+  @Column('bigint', { transformer: bigintTransformer })
+  timestamp!: bigint;
+
+  @Column('bigint', { transformer: bigintTransformer })
+  index!: bigint;
+
+  @ManyToOne(() => Account)
+  account!: Account;
+
+  @Column('bigint', { transformer: bigintTransformer })
+  totalEarned!: bigint;
+
+  @Column('bigint', { transformer: bigintTransformer })
+  claimed!: bigint;
+}

packages/eden-watcher/src/entity/Contract.ts

@@ -0,0 +1,24 @@
+//
+// Copyright 2021 Vulcanize, Inc.
+//
+
+import { Entity, PrimaryGeneratedColumn, Column, Index } from 'typeorm';
+
+@Entity()
+@Index(['address'], { unique: true })
+export class Contract {
+  @PrimaryGeneratedColumn()
+  id!: number;
+
+  @Column('varchar', { length: 42 })
+  address!: string;
+
+  @Column('varchar')
+  kind!: string;
+
+  @Column('boolean')
+  checkpoint!: boolean;
+
+  @Column('integer')
+  startingBlock!: number;
+}

packages/eden-watcher/src/entity/Distribution.ts

@@ -0,0 +1,34 @@
+//
+// Copyright 2021 Vulcanize, Inc.
+//
+
+import { Entity, PrimaryColumn, Column, ManyToOne } from 'typeorm';
+import { Distributor } from './Distributor';
+import { bigintTransformer } from '@vulcanize/util';
+
+@Entity()
+export class Distribution {
+  @PrimaryColumn('varchar')
+  id!: string;
+
+  @PrimaryColumn('varchar', { length: 66 })
+  blockHash!: string;
+
+  @Column('integer')
+  blockNumber!: number;
+
+  @ManyToOne(() => Distributor)
+  distributor!: Distributor;
+
+  @Column('bigint', { transformer: bigintTransformer })
+  timestamp!: bigint;
+
+  @Column('bigint', { transformer: bigintTransformer })
+  distributionNumber!: bigint;
+
+  @Column('varchar')
+  merkleRoot!: string;
+
+  @Column('varchar')
+  metadataURI!: string;
+}

packages/eden-watcher/src/entity/Distributor.ts

@@ -0,0 +1,21 @@
+//
+// Copyright 2021 Vulcanize, Inc.
+//
+
+import { Entity, PrimaryColumn, Column, ManyToOne } from 'typeorm';
+import { Distribution } from './Distribution';
+
+@Entity()
+export class Distributor {
+  @PrimaryColumn('varchar')
+  id!: string;
+
+  @PrimaryColumn('varchar', { length: 66 })
+  blockHash!: string;
+
+  @Column('integer')
+  blockNumber!: number;
+
+  @ManyToOne(() => Distribution, { nullable: true })
+  currentDistribution!: Distribution;
+}

packages/eden-watcher/src/entity/Epoch.ts

@@ -0,0 +1,44 @@
+//
+// Copyright 2021 Vulcanize, Inc.
+//
+
+import { Entity, PrimaryColumn, Column, ManyToOne } from 'typeorm';
+import { Block } from './Block';
+import { ProducerEpoch } from './ProducerEpoch';
+import { bigintTransformer } from '@vulcanize/util';
+
+@Entity()
+export class Epoch {
+  @PrimaryColumn('varchar')
+  id!: string;
+
+  @PrimaryColumn('varchar', { length: 66 })
+  blockHash!: string;
+
+  @Column('integer')
+  blockNumber!: number;
+
+  @Column('boolean')
+  finalized!: boolean;
+
+  @Column('bigint', { transformer: bigintTransformer })
+  epochNumber!: bigint;
+
+  @ManyToOne(() => Block, { nullable: true })
+  startBlock!: Block;
+
+  @ManyToOne(() => Block, { nullable: true })
+  endBlock!: Block;
+
+  @Column('bigint', { transformer: bigintTransformer })
+  producerBlocks!: bigint;
+
+  @Column('bigint', { transformer: bigintTransformer })
+  allBlocks!: bigint;
+
+  @Column('varchar')
+  producerBlocksRatio!: string;
+
+  @ManyToOne(() => ProducerEpoch)
+  producerRewards!: ProducerEpoch;
+}

packages/eden-watcher/src/entity/Event.ts

@@ -0,0 +1,38 @@
+//
+// Copyright 2021 Vulcanize, Inc.
+//
+
+import { Entity, PrimaryGeneratedColumn, Column, Index, ManyToOne } from 'typeorm';
+import { BlockProgress } from './BlockProgress';
+
+@Entity()
+@Index(['block', 'contract'])
+@Index(['block', 'contract', 'eventName'])
+export class Event {
+  @PrimaryGeneratedColumn()
+  id!: number;
+
+  @ManyToOne(() => BlockProgress, { onDelete: 'CASCADE' })
+  block!: BlockProgress;
+
+  @Column('varchar', { length: 66 })
+  txHash!: string;
+
+  @Column('integer')
+  index!: number;
+
+  @Column('varchar', { length: 42 })
+  contract!: string;
+
+  @Column('varchar', { length: 256 })
+  eventName!: string;
+
+  @Column('text')
+  eventInfo!: string;
+
+  @Column('text')
+  extraInfo!: string;
+
+  @Column('text')
+  proof!: string;
+}

packages/eden-watcher/src/entity/HookStatus.ts

@@ -0,0 +1,14 @@
+//
+// Copyright 2021 Vulcanize, Inc.
+//
+
+import { Entity, PrimaryGeneratedColumn, Column } from 'typeorm';
+
+@Entity()
+export class HookStatus {
+  @PrimaryGeneratedColumn()
+  id!: number;
+
+  @Column('integer')
+  latestProcessedBlockNumber!: number;
+}

packages/eden-watcher/src/entity/IPLDBlock.ts

@@ -0,0 +1,30 @@
+//
+// Copyright 2021 Vulcanize, Inc.
+//
+
+import { Entity, PrimaryGeneratedColumn, Column, Index, ManyToOne } from 'typeorm';
+import { BlockProgress } from './BlockProgress';
+
+@Entity()
+@Index(['cid'], { unique: true })
+@Index(['block', 'contractAddress'])
+@Index(['block', 'contractAddress', 'kind'], { unique: true })
+export class IPLDBlock {
+  @PrimaryGeneratedColumn()
+  id!: number;
+
+  @ManyToOne(() => BlockProgress, { onDelete: 'CASCADE' })
+  block!: BlockProgress;
+
+  @Column('varchar', { length: 42 })
+  contractAddress!: string;
+
+  @Column('varchar')
+  cid!: string;
+
+  @Column('varchar')
+  kind!: string;
+
+  @Column('bytea')
+  data!: Buffer;
+}

packages/eden-watcher/src/entity/Network.ts

@@ -0,0 +1,41 @@
+//
+// Copyright 2021 Vulcanize, Inc.
+//
+
+import { Entity, PrimaryColumn, Column, ManyToOne } from 'typeorm';
+import { Slot } from './Slot';
+import { Staker } from './Staker';
+import { bigintTransformer } from '@vulcanize/util';
+
+@Entity()
+export class Network {
+  @PrimaryColumn('varchar')
+  id!: string;
+
+  @PrimaryColumn('varchar', { length: 66 })
+  blockHash!: string;
+
+  @Column('integer')
+  blockNumber!: number;
+
+  @ManyToOne(() => Slot, { nullable: true })
+  slot0!: Slot;
+
+  @ManyToOne(() => Slot, { nullable: true })
+  slot1!: Slot;
+
+  @ManyToOne(() => Slot, { nullable: true })
+  slot2!: Slot;
+
+  @ManyToOne(() => Staker)
+  stakers!: Staker;
+
+  @Column('bigint', { nullable: true, transformer: bigintTransformer })
+  numStakers!: bigint;
+
+  @Column('bigint', { transformer: bigintTransformer })
+  totalStaked!: bigint;
+
+  @Column('bigint', { array: true })
+  stakedPercentiles!: bigint[];
+}

packages/eden-watcher/src/entity/Producer.ts

@@ -0,0 +1,33 @@
+//
+// Copyright 2021 Vulcanize, Inc.
+//
+
+import { Entity, PrimaryColumn, Column } from 'typeorm';
+import { bigintTransformer } from '@vulcanize/util';
+
+@Entity()
+export class Producer {
+  @PrimaryColumn('varchar')
+  id!: string;
+
+  @PrimaryColumn('varchar', { length: 66 })
+  blockHash!: string;
+
+  @Column('integer')
+  blockNumber!: number;
+
+  @Column('boolean')
+  active!: boolean;
+
+  @Column('varchar', { nullable: true })
+  rewardCollector!: string;
+
+  @Column('bigint', { transformer: bigintTransformer })
+  rewards!: bigint;
+
+  @Column('bigint', { transformer: bigintTransformer })
+  confirmedBlocks!: bigint;
+
+  @Column('bigint', { transformer: bigintTransformer })
+  pendingEpochBlocks!: bigint;
+}

packages/eden-watcher/src/entity/ProducerEpoch.ts

@@ -0,0 +1,34 @@
+//
+// Copyright 2021 Vulcanize, Inc.
+//
+
+import { Entity, PrimaryColumn, Column, ManyToOne } from 'typeorm';
+import { Epoch } from './Epoch';
+import { bigintTransformer } from '@vulcanize/util';
+
+@Entity()
+export class ProducerEpoch {
+  @PrimaryColumn('varchar')
+  id!: string;
+
+  @PrimaryColumn('varchar', { length: 66 })
+  blockHash!: string;
+
+  @Column('integer')
+  blockNumber!: number;
+
+  @Column('varchar')
+  address!: string;
+
+  @ManyToOne(() => Epoch)
+  epoch!: Epoch;
+
+  @Column('bigint', { transformer: bigintTransformer })
+  totalRewards!: bigint;
+
+  @Column('bigint', { transformer: bigintTransformer })
+  blocksProduced!: bigint;
+
+  @Column('varchar')
+  blocksProducedRatio!: string;
+}

packages/eden-watcher/src/entity/ProducerRewardCollectorChange.ts

@@ -0,0 +1,23 @@
+//
+// Copyright 2021 Vulcanize, Inc.
+//
+
+import { Entity, PrimaryColumn, Column } from 'typeorm';
+
+@Entity()
+export class ProducerRewardCollectorChange {
+  @PrimaryColumn('varchar')
+  id!: string;
+
+  @PrimaryColumn('varchar', { length: 66 })
+  blockHash!: string;
+
+  @Column('integer')
+  blockNumber!: number;
+
+  @Column('varchar')
+  producer!: string;
+
+  @Column('varchar')
+  rewardCollector!: string;
+}

packages/eden-watcher/src/entity/ProducerSet.ts

@@ -0,0 +1,21 @@
+//
+// Copyright 2021 Vulcanize, Inc.
+//
+
+import { Entity, PrimaryColumn, Column, ManyToOne } from 'typeorm';
+import { Producer } from './Producer';
+
+@Entity()
+export class ProducerSet {
+  @PrimaryColumn('varchar')
+  id!: string;
+
+  @PrimaryColumn('varchar', { length: 66 })
+  blockHash!: string;
+
+  @Column('integer')
+  blockNumber!: number;
+
+  @ManyToOne(() => Producer)
+  producers!: Producer;
+}

packages/eden-watcher/src/entity/ProducerSetChange.ts

@@ -0,0 +1,28 @@
+//
+// Copyright 2021 Vulcanize, Inc.
+//
+
+import { Entity, PrimaryColumn, Column } from 'typeorm';
+
+enum ProducerSetChangeType {
+  Added,
+  Removed
+}
+
+@Entity()
+export class ProducerSetChange {
+  @PrimaryColumn('varchar')
+  id!: string;
+
+  @PrimaryColumn('varchar', { length: 66 })
+  blockHash!: string;
+
+  @Column('integer')
+  blockNumber!: number;
+
+  @Column('varchar')
+  producer!: string;
+
+  @Column('integer')
+  changeType!: ProducerSetChangeType;
+}

packages/eden-watcher/src/entity/RewardSchedule.ts

@@ -0,0 +1,31 @@
+//
+// Copyright 2021 Vulcanize, Inc.
+//
+
+import { Entity, PrimaryColumn, Column, ManyToOne } from 'typeorm';
+import { RewardScheduleEntry } from './RewardScheduleEntry';
+import { Epoch } from './Epoch';
+
+@Entity()
+export class RewardSchedule {
+  @PrimaryColumn('varchar')
+  id!: string;
+
+  @PrimaryColumn('varchar', { length: 66 })
+  blockHash!: string;
+
+  @Column('integer')
+  blockNumber!: number;
+
+  @ManyToOne(() => RewardScheduleEntry)
+  rewardScheduleEntries!: RewardScheduleEntry;
+
+  @ManyToOne(() => Epoch, { nullable: true })
+  lastEpoch!: Epoch;
+
+  @ManyToOne(() => Epoch, { nullable: true })
+  pendingEpoch!: Epoch;
+
+  @ManyToOne(() => RewardScheduleEntry, { nullable: true })
+  activeRewardScheduleEntry!: RewardScheduleEntry;
+}

packages/eden-watcher/src/entity/RewardScheduleEntry.ts

@@ -0,0 +1,27 @@
+//
+// Copyright 2021 Vulcanize, Inc.
+//
+
+import { Entity, PrimaryColumn, Column } from 'typeorm';
+import { bigintTransformer } from '@vulcanize/util';
+
+@Entity()
+export class RewardScheduleEntry {
+  @PrimaryColumn('varchar')
+  id!: string;
+
+  @PrimaryColumn('varchar', { length: 66 })
+  blockHash!: string;
+
+  @Column('integer')
+  blockNumber!: number;
+
+  @Column('bigint', { transformer: bigintTransformer })
+  startTime!: bigint;
+
+  @Column('bigint', { transformer: bigintTransformer })
+  epochDuration!: bigint;
+
+  @Column('bigint', { transformer: bigintTransformer })
+  rewardsPerEpoch!: bigint;
+}

packages/eden-watcher/src/entity/Slash.ts

@@ -0,0 +1,28 @@
+//
+// Copyright 2021 Vulcanize, Inc.
+//
+
+import { Entity, PrimaryColumn, Column, ManyToOne } from 'typeorm';
+import { Account } from './Account';
+import { bigintTransformer } from '@vulcanize/util';
+
+@Entity()
+export class Slash {
+  @PrimaryColumn('varchar')
+  id!: string;
+
+  @PrimaryColumn('varchar', { length: 66 })
+  blockHash!: string;
+
+  @Column('integer')
+  blockNumber!: number;
+
+  @Column('bigint', { transformer: bigintTransformer })
+  timestamp!: bigint;
+
+  @ManyToOne(() => Account)
+  account!: Account;
+
+  @Column('bigint', { transformer: bigintTransformer })
+  slashed!: bigint;
+}

packages/eden-watcher/src/entity/Slot.ts

@@ -0,0 +1,43 @@
+//
+// Copyright 2021 Vulcanize, Inc.
+//
+
+import { Entity, PrimaryColumn, Column, ManyToOne } from 'typeorm';
+import { SlotClaim } from './SlotClaim';
+import { bigintTransformer } from '@vulcanize/util';
+
+@Entity()
+export class Slot {
+  @PrimaryColumn('varchar')
+  id!: string;
+
+  @PrimaryColumn('varchar', { length: 66 })
+  blockHash!: string;
+
+  @Column('integer')
+  blockNumber!: number;
+
+  @Column('varchar')
+  owner!: string;
+
+  @Column('varchar')
+  delegate!: string;
+
+  @Column('bigint', { transformer: bigintTransformer })
+  winningBid!: bigint;
+
+  @Column('bigint', { transformer: bigintTransformer })
+  oldBid!: bigint;
+
+  @Column('bigint', { transformer: bigintTransformer })
+  startTime!: bigint;
+
+  @Column('bigint', { transformer: bigintTransformer })
+  expirationTime!: bigint;
+
+  @Column('varchar')
+  taxRatePerDay!: string;
+
+  @ManyToOne(() => SlotClaim)
+  claims!: SlotClaim;
+}

packages/eden-watcher/src/entity/SlotClaim.ts

@@ -0,0 +1,40 @@
+//
+// Copyright 2021 Vulcanize, Inc.
+//
+
+import { Entity, PrimaryColumn, Column, ManyToOne } from 'typeorm';
+import { Slot } from './Slot';
+import { bigintTransformer } from '@vulcanize/util';
+
+@Entity()
+export class SlotClaim {
+  @PrimaryColumn('varchar')
+  id!: string;
+
+  @PrimaryColumn('varchar', { length: 66 })
+  blockHash!: string;
+
+  @Column('integer')
+  blockNumber!: number;
+
+  @ManyToOne(() => Slot)
+  slot!: Slot;
+
+  @Column('varchar')
+  owner!: string;
+
+  @Column('bigint', { transformer: bigintTransformer })
+  winningBid!: bigint;
+
+  @Column('bigint', { transformer: bigintTransformer })
+  oldBid!: bigint;
+
+  @Column('bigint', { transformer: bigintTransformer })
+  startTime!: bigint;
+
+  @Column('bigint', { transformer: bigintTransformer })
+  expirationTime!: bigint;
+
+  @Column('varchar')
+  taxRatePerDay!: string;
+}

packages/eden-watcher/src/entity/Staker.ts

@@ -0,0 +1,24 @@
+//
+// Copyright 2021 Vulcanize, Inc.
+//
+
+import { Entity, PrimaryColumn, Column } from 'typeorm';
+import { bigintTransformer } from '@vulcanize/util';
+
+@Entity()
+export class Staker {
+  @PrimaryColumn('varchar')
+  id!: string;
+
+  @PrimaryColumn('varchar', { length: 66 })
+  blockHash!: string;
+
+  @Column('integer')
+  blockNumber!: number;
+
+  @Column('bigint', { transformer: bigintTransformer })
+  staked!: bigint;
+
+  @Column('bigint', { nullable: true, transformer: bigintTransformer })
+  rank!: bigint;
+}

packages/eden-watcher/src/entity/SyncStatus.ts

@@ -0,0 +1,30 @@
+//
+// Copyright 2021 Vulcanize, Inc.
+//
+
+import { Entity, PrimaryGeneratedColumn, Column } from 'typeorm';
+import { SyncStatusInterface } from '@vulcanize/util';
+
+@Entity()
+export class SyncStatus implements SyncStatusInterface {
+  @PrimaryGeneratedColumn()
+  id!: number;
+
+  @Column('varchar', { length: 66 })
+  chainHeadBlockHash!: string;
+
+  @Column('integer')
+  chainHeadBlockNumber!: number;
+
+  @Column('varchar', { length: 66 })
+  latestIndexedBlockHash!: string;
+
+  @Column('integer')
+  latestIndexedBlockNumber!: number;
+
+  @Column('varchar', { length: 66 })
+  latestCanonicalBlockHash!: string;
+
+  @Column('integer')
+  latestCanonicalBlockNumber!: number;
+}

packages/eden-watcher/src/events.ts

@@ -0,0 +1,180 @@
+//
+// Copyright 2021 Vulcanize, Inc.
+//
+
+import assert from 'assert';
+import debug from 'debug';
+import { PubSub } from 'apollo-server-express';
+
+import { EthClient } from '@vulcanize/ipld-eth-client';
+import {
+  JobQueue,
+  EventWatcher as BaseEventWatcher,
+  EventWatcherInterface,
+  QUEUE_BLOCK_PROCESSING,
+  QUEUE_EVENT_PROCESSING,
+  QUEUE_BLOCK_CHECKPOINT,
+  QUEUE_HOOKS,
+  QUEUE_IPFS,
+  UNKNOWN_EVENT_NAME,
+  UpstreamConfig,
+  JOB_KIND_PRUNE
+} from '@vulcanize/util';
+
+import { Indexer } from './indexer';
+import { Event } from './entity/Event';
+
+const EVENT = 'event';
+
+const log = debug('vulcanize:events');
+
+export class EventWatcher implements EventWatcherInterface {
+  _ethClient: EthClient
+  _indexer: Indexer
+  _subscription: ZenObservable.Subscription | undefined
+  _baseEventWatcher: BaseEventWatcher
+  _pubsub: PubSub
+  _jobQueue: JobQueue
+
+  constructor (upstreamConfig: UpstreamConfig, ethClient: EthClient, postgraphileClient: EthClient, indexer: Indexer, pubsub: PubSub, jobQueue: JobQueue) {
+    assert(ethClient);
+    assert(indexer);
+
+    this._ethClient = ethClient;
+    this._indexer = indexer;
+    this._pubsub = pubsub;
+    this._jobQueue = jobQueue;
+    this._baseEventWatcher = new BaseEventWatcher(upstreamConfig, this._ethClient, postgraphileClient, this._indexer, this._pubsub, this._jobQueue);
+  }
+
+  getEventIterator (): AsyncIterator<any> {
+    return this._pubsub.asyncIterator([EVENT]);
+  }
+
+  getBlockProgressEventIterator (): AsyncIterator<any> {
+    return this._baseEventWatcher.getBlockProgressEventIterator();
+  }
+
+  async start (): Promise<void> {
+    assert(!this._subscription, 'subscription already started');
+
+    await this.initBlockProcessingOnCompleteHandler();
+    await this.initEventProcessingOnCompleteHandler();
+    await this.initHooksOnCompleteHandler();
+    await this.initBlockCheckpointOnCompleteHandler();
+    this._baseEventWatcher.startBlockProcessing();
+  }
+
+  async stop (): Promise<void> {
+    this._baseEventWatcher.stop();
+  }
+
+  async initBlockProcessingOnCompleteHandler (): Promise<void> {
+    this._jobQueue.onComplete(QUEUE_BLOCK_PROCESSING, async (job) => {
+      const { id, data: { failed, request: { data: { kind } } } } = job;
+
+      if (failed) {
+        log(`Job ${id} for queue ${QUEUE_BLOCK_PROCESSING} failed`);
+        return;
+      }
+
+      await this._baseEventWatcher.blockProcessingCompleteHandler(job);
+
+      await this.createHooksJob(kind);
+    });
+  }
+
+  async initEventProcessingOnCompleteHandler (): Promise<void> {
+    await this._jobQueue.onComplete(QUEUE_EVENT_PROCESSING, async (job) => {
+      const { id, data: { request, failed, state, createdOn } } = job;
+
+      if (failed) {
+        log(`Job ${id} for queue ${QUEUE_EVENT_PROCESSING} failed`);
+        return;
+      }
+
+      const dbEvent = await this._baseEventWatcher.eventProcessingCompleteHandler(job);
+
+      const timeElapsedInSeconds = (Date.now() - Date.parse(createdOn)) / 1000;
+      log(`Job onComplete event ${request.data.id} publish ${!!request.data.publish}`);
+      if (!failed && state === 'completed' && request.data.publish) {
+        // Check for max acceptable lag time between request and sending results to live subscribers.
+        if (timeElapsedInSeconds <= this._jobQueue.maxCompletionLag) {
+          await this.publishEventToSubscribers(dbEvent, timeElapsedInSeconds);
+        } else {
+          log(`event ${request.data.id} is too old (${timeElapsedInSeconds}s), not broadcasting to live subscribers`);
+        }
+      }
+    });
+  }
+
+  async initHooksOnCompleteHandler (): Promise<void> {
+    this._jobQueue.onComplete(QUEUE_HOOKS, async (job) => {
+      const { data: { request: { data: { blockNumber, blockHash } } } } = job;
+
+      await this._indexer.updateHookStatusProcessedBlock(blockNumber);
+
+      // Create a checkpoint job after completion of a hook job.
+      await this.createCheckpointJob(blockHash, blockNumber);
+    });
+  }
+
+  async initBlockCheckpointOnCompleteHandler (): Promise<void> {
+    this._jobQueue.onComplete(QUEUE_BLOCK_CHECKPOINT, async (job) => {
+      const { data: { request: { data: { blockHash } } } } = job;
+
+      if (this._indexer.isIPFSConfigured()) {
+        await this.createIPFSPutJob(blockHash);
+      }
+    });
+  }
+
+  async publishEventToSubscribers (dbEvent: Event, timeElapsedInSeconds: number): Promise<void> {
+    if (dbEvent && dbEvent.eventName !== UNKNOWN_EVENT_NAME) {
+      const resultEvent = this._indexer.getResultEvent(dbEvent);
+
+      log(`pushing event to GQL subscribers (${timeElapsedInSeconds}s elapsed): ${resultEvent.event.__typename}`);
+
+      // Publishing the event here will result in pushing the payload to GQL subscribers for `onEvent`.
+      await this._pubsub.publish(EVENT, {
+        onEvent: resultEvent
+      });
+    }
+  }
+
+  async createHooksJob (kind: string): Promise<void> {
+    // If it's a pruning job: Create a hook job for the latest canonical block.
+    if (kind === JOB_KIND_PRUNE) {
+      const latestCanonicalBlock = await this._indexer.getLatestCanonicalBlock();
+      assert(latestCanonicalBlock);
+
+      await this._jobQueue.pushJob(
+        QUEUE_HOOKS,
+        {
+          blockHash: latestCanonicalBlock.blockHash,
+          blockNumber: latestCanonicalBlock.blockNumber
+        }
+      );
+    }
+  }
+
+  async createCheckpointJob (blockHash: string, blockNumber: number): Promise<void> {
+    await this._jobQueue.pushJob(
+      QUEUE_BLOCK_CHECKPOINT,
+      {
+        blockHash,
+        blockNumber
+      }
+    );
+  }
+
+  async createIPFSPutJob (blockHash: string): Promise<void> {
+    const ipldBlocks = await this._indexer.getIPLDBlocksByHash(blockHash);
+
+    for (const ipldBlock of ipldBlocks) {
+      const data = this._indexer.getIPLDData(ipldBlock);
+
+      await this._jobQueue.pushJob(QUEUE_IPFS, { data });
+    }
+  }
+}

packages/eden-watcher/src/fill.ts

@@ -0,0 +1,82 @@
+//
+// Copyright 2021 Vulcanize, Inc.
+//
+
+import path from 'path';
+import assert from 'assert';
+import 'reflect-metadata';
+import yargs from 'yargs';
+import { hideBin } from 'yargs/helpers';
+import debug from 'debug';
+import { PubSub } from 'apollo-server-express';
+
+import { Config, getConfig, fillBlocks, JobQueue, DEFAULT_CONFIG_PATH, initClients } from '@vulcanize/util';
+import { GraphWatcher, Database as GraphDatabase } from '@vulcanize/graph-node';
+
+import { Database } from './database';
+import { Indexer } from './indexer';
+import { EventWatcher } from './events';
+
+const log = debug('vulcanize:server');
+
+export const main = async (): Promise<any> => {
+  const argv = await yargs(hideBin(process.argv)).parserConfiguration({
+    'parse-numbers': false
+  }).options({
+    configFile: {
+      alias: 'f',
+      type: 'string',
+      demandOption: true,
+      describe: 'configuration file path (toml)',
+      default: DEFAULT_CONFIG_PATH
+    },
+    startBlock: {
+      type: 'number',
+      demandOption: true,
+      describe: 'Block number to start processing at'
+    },
+    endBlock: {
+      type: 'number',
+      demandOption: true,
+      describe: 'Block number to stop processing at'
+    }
+  }).argv;
+
+  const config: Config = await getConfig(argv.configFile);
+  const { ethClient, postgraphileClient, ethProvider } = await initClients(config);
+
+  const db = new Database(config.database);
+  await db.init();
+
+  const graphDb = new GraphDatabase(config.database, path.resolve(__dirname, 'entity/*'));
+  await graphDb.init();
+
+  const graphWatcher = new GraphWatcher(graphDb, postgraphileClient, config.server.subgraphPath);
+
+  // Note: In-memory pubsub works fine for now, as each watcher is a single process anyway.
+  // Later: https://www.apollographql.com/docs/apollo-server/data/subscriptions/#production-pubsub-libraries
+  const pubsub = new PubSub();
+  const indexer = new Indexer(config.server, db, ethClient, postgraphileClient, ethProvider, graphWatcher);
+
+  graphWatcher.setIndexer(indexer);
+  await graphWatcher.init();
+
+  const jobQueueConfig = config.jobQueue;
+  assert(jobQueueConfig, 'Missing job queue config');
+
+  const { dbConnectionString, maxCompletionLagInSecs } = jobQueueConfig;
+  assert(dbConnectionString, 'Missing job queue db connection string');
+
+  const jobQueue = new JobQueue({ dbConnectionString, maxCompletionLag: maxCompletionLagInSecs });
+  await jobQueue.start();
+
+  const eventWatcher = new EventWatcher(config.upstream, ethClient, postgraphileClient, indexer, pubsub, jobQueue);
+
+  await fillBlocks(jobQueue, indexer, postgraphileClient, eventWatcher, config.upstream.ethServer.blockDelayInMilliSecs, argv);
+};
+
+main().catch(err => {
+  log(err);
+}).finally(() => {
+  process.exit();
+});

packages/eden-watcher/src/gql/index.ts

@@ -0,0 +1,3 @@
+export * as mutations from './mutations';
+export * as queries from './queries';
+export * as subscriptions from './subscriptions';

packages/eden-watcher/src/gql/mutations/index.ts

@@ -0,0 +1,4 @@
+import fs from 'fs';
+import path from 'path';
+
+export const watchContract = fs.readFileSync(path.join(__dirname, 'watchContract.gql'), 'utf8');

packages/eden-watcher/src/gql/mutations/watchContract.gql

@@ -0,0 +1,3 @@
+mutation watchContract($address: String!, $kind: String!, $checkpoint: Boolean!, $startingBlock: Int){
+    watchContract(address: $address, kind: $kind, checkpoint: $checkpoint, startingBlock: $startingBlock)
+}

packages/eden-watcher/src/gql/queries/account.gql

@@ -0,0 +1,29 @@
+query account($id: String!, $blockHash: String!){
+    account(id: $id, blockHash: $blockHash){
+        id
+        totalClaimed
+        totalSlashed
+        claims{
+            id
+            timestamp
+            index
+            account{
+                id
+                totalClaimed
+                totalSlashed
+                slashes{
+                    id
+                    timestamp
+                    account{
+                        id
+                        totalClaimed
+                        totalSlashed
+                    }
+                    slashed
+                }
+            }
+            totalEarned
+            claimed
+        }
+    }
+}

packages/eden-watcher/src/gql/queries/claim.gql

@@ -0,0 +1,36 @@
+query claim($id: String!, $blockHash: String!){
+    claim(id: $id, blockHash: $blockHash){
+        id
+        timestamp
+        index
+        account{
+            id
+            totalClaimed
+            totalSlashed
+            claims{
+                id
+                timestamp
+                index
+                account{
+                    id
+                    totalClaimed
+                    totalSlashed
+                    slashes{
+                        id
+                        timestamp
+                        account{
+                            id
+                            totalClaimed
+                            totalSlashed
+                        }
+                        slashed
+                    }
+                }
+                totalEarned
+                claimed
+            }
+        }
+        totalEarned
+        claimed
+    }
+}

packages/eden-watcher/src/gql/queries/distribution.gql

@@ -0,0 +1,22 @@
+query distribution($id: String!, $blockHash: String!){
+    distribution(id: $id, blockHash: $blockHash){
+        id
+        distributor{
+            id
+            currentDistribution{
+                id
+                distributor{
+                    id
+                }
+                timestamp
+                distributionNumber
+                merkleRoot
+                metadataURI
+            }
+        }
+        timestamp
+        distributionNumber
+        merkleRoot
+        metadataURI
+    }
+}

packages/eden-watcher/src/gql/queries/distributor.gql

@@ -0,0 +1,15 @@
+query distributor($id: String!, $blockHash: String!){
+    distributor(id: $id, blockHash: $blockHash){
+        id
+        currentDistribution{
+            id
+            distributor{
+                id
+            }
+            timestamp
+            distributionNumber
+            merkleRoot
+            metadataURI
+        }
+    }
+}

packages/eden-watcher/src/gql/queries/epoch.gql

@@ -0,0 +1,39 @@
+query epoch($id: String!, $blockHash: String!){
+    epoch(id: $id, blockHash: $blockHash){
+        id
+        finalized
+        epochNumber
+        startBlock{
+            cid
+            hash
+            number
+            timestamp
+            parentHash
+        }
+        endBlock{
+            cid
+            hash
+            number
+            timestamp
+            parentHash
+        }
+        producerBlocks
+        allBlocks
+        producerBlocksRatio
+        producerRewards{
+            id
+            address
+            epoch{
+                id
+                finalized
+                epochNumber
+                producerBlocks
+                allBlocks
+                producerBlocksRatio
+            }
+            totalRewards
+            blocksProduced
+            blocksProducedRatio
+        }
+    }
+}

packages/eden-watcher/src/gql/queries/events.gql

@@ -0,0 +1,75 @@
+query events($blockHash: String!, $contractAddress: String!, $name: String){
+    events(blockHash: $blockHash, contractAddress: $contractAddress, name: $name){
+        block{
+            cid
+            hash
+            number
+            timestamp
+            parentHash
+        }
+        tx{
+            hash
+            index
+            from
+            to
+        }
+        contract
+        eventIndex
+        event{
+            ... on TransferEvent {
+                from
+                to
+                value
+            }
+            ... on ApprovalEvent {
+                owner
+                spender
+                value
+            }
+            ... on AuthorizationUsedEvent {
+                authorizer
+                nonce
+            }
+            ... on AdminUpdatedEvent {
+                newAdmin
+                oldAdmin
+            }
+            ... on TaxRateUpdatedEvent {
+                newNumerator
+                newDenominator
+                oldNumerator
+                oldDenominator
+            }
+            ... on SlotClaimedEvent {
+                slot
+                owner
+                delegate
+                newBidAmount
+                oldBidAmount
+                taxNumerator
+                taxDenominator
+            }
+            ... on SlotDelegateUpdatedEvent {
+                slot
+                owner
+                newDelegate
+                oldDelegate
+            }
+            ... on StakeEvent {
+                staker
+                stakeAmount
+            }
+            ... on UnstakeEvent {
+                staker
+                unstakedAmount
+            }
+            ... on WithdrawEvent {
+                withdrawer
+                withdrawalAmount
+            }
+        }
+        proof{
+            data
+        }
+    }
+}

packages/eden-watcher/src/gql/queries/eventsInRange.gql

@@ -0,0 +1,75 @@
+query eventsInRange($fromBlockNumber: Int!, $toBlockNumber: Int!){
+    eventsInRange(fromBlockNumber: $fromBlockNumber, toBlockNumber: $toBlockNumber){
+        block{
+            cid
+            hash
+            number
+            timestamp
+            parentHash
+        }
+        tx{
+            hash
+            index
+            from
+            to
+        }
+        contract
+        eventIndex
+        event{
+            ... on TransferEvent {
+                from
+                to
+                value
+            }
+            ... on ApprovalEvent {
+                owner
+                spender
+                value
+            }
+            ... on AuthorizationUsedEvent {
+                authorizer
+                nonce
+            }
+            ... on AdminUpdatedEvent {
+                newAdmin
+                oldAdmin
+            }
+            ... on TaxRateUpdatedEvent {
+                newNumerator
+                newDenominator
+                oldNumerator
+                oldDenominator
+            }
+            ... on SlotClaimedEvent {
+                slot
+                owner
+                delegate
+                newBidAmount
+                oldBidAmount
+                taxNumerator
+                taxDenominator
+            }
+            ... on SlotDelegateUpdatedEvent {
+                slot
+                owner
+                newDelegate
+                oldDelegate
+            }
+            ... on StakeEvent {
+                staker
+                stakeAmount
+            }
+            ... on UnstakeEvent {
+                staker
+                unstakedAmount
+            }
+            ... on WithdrawEvent {
+                withdrawer
+                withdrawalAmount
+            }
+        }
+        proof{
+            data
+        }
+    }
+}

packages/eden-watcher/src/gql/queries/getState.gql

@@ -0,0 +1,15 @@
+query getState($blockHash: String!, $contractAddress: String!, $kind: String){
+    getState(blockHash: $blockHash, contractAddress: $contractAddress, kind: $kind){
+        block{
+            cid
+            hash
+            number
+            timestamp
+            parentHash
+        }
+        contractAddress
+        cid
+        kind
+        data
+    }
+}

packages/eden-watcher/src/gql/queries/getStateByCID.gql

@@ -0,0 +1,15 @@
+query getStateByCID($cid: String!){
+    getStateByCID(cid: $cid){
+        block{
+            cid
+            hash
+            number
+            timestamp
+            parentHash
+        }
+        contractAddress
+        cid
+        kind
+        data
+    }
+}

packages/eden-watcher/src/gql/queries/index.ts

@@ -0,0 +1,24 @@
+import fs from 'fs';
+import path from 'path';
+
+export const events = fs.readFileSync(path.join(__dirname, 'events.gql'), 'utf8');
+export const eventsInRange = fs.readFileSync(path.join(__dirname, 'eventsInRange.gql'), 'utf8');
+export const producer = fs.readFileSync(path.join(__dirname, 'producer.gql'), 'utf8');
+export const producerSet = fs.readFileSync(path.join(__dirname, 'producerSet.gql'), 'utf8');
+export const producerSetChange = fs.readFileSync(path.join(__dirname, 'producerSetChange.gql'), 'utf8');
+export const producerRewardCollectorChange = fs.readFileSync(path.join(__dirname, 'producerRewardCollectorChange.gql'), 'utf8');
+export const rewardScheduleEntry = fs.readFileSync(path.join(__dirname, 'rewardScheduleEntry.gql'), 'utf8');
+export const rewardSchedule = fs.readFileSync(path.join(__dirname, 'rewardSchedule.gql'), 'utf8');
+export const producerEpoch = fs.readFileSync(path.join(__dirname, 'producerEpoch.gql'), 'utf8');
+export const epoch = fs.readFileSync(path.join(__dirname, 'epoch.gql'), 'utf8');
+export const slotClaim = fs.readFileSync(path.join(__dirname, 'slotClaim.gql'), 'utf8');
+export const slot = fs.readFileSync(path.join(__dirname, 'slot.gql'), 'utf8');
+export const staker = fs.readFileSync(path.join(__dirname, 'staker.gql'), 'utf8');
+export const network = fs.readFileSync(path.join(__dirname, 'network.gql'), 'utf8');
+export const distributor = fs.readFileSync(path.join(__dirname, 'distributor.gql'), 'utf8');
+export const distribution = fs.readFileSync(path.join(__dirname, 'distribution.gql'), 'utf8');
+export const claim = fs.readFileSync(path.join(__dirname, 'claim.gql'), 'utf8');
+export const slash = fs.readFileSync(path.join(__dirname, 'slash.gql'), 'utf8');
+export const account = fs.readFileSync(path.join(__dirname, 'account.gql'), 'utf8');
+export const getStateByCID = fs.readFileSync(path.join(__dirname, 'getStateByCID.gql'), 'utf8');
+export const getState = fs.readFileSync(path.join(__dirname, 'getState.gql'), 'utf8');

packages/eden-watcher/src/gql/queries/network.gql

@@ -0,0 +1,89 @@
+query network($id: String!, $blockHash: String!){
+    network(id: $id, blockHash: $blockHash){
+        id
+        slot0{
+            id
+            owner
+            delegate
+            winningBid
+            oldBid
+            startTime
+            expirationTime
+            taxRatePerDay
+            claims{
+                id
+                slot{
+                    id
+                    owner
+                    delegate
+                    winningBid
+                    oldBid
+                    startTime
+                    expirationTime
+                    taxRatePerDay
+                    claims{
+                        id
+                        owner
+                        winningBid
+                        oldBid
+                        startTime
+                        expirationTime
+                        taxRatePerDay
+                    }
+                }
+                owner
+                winningBid
+                oldBid
+                startTime
+                expirationTime
+                taxRatePerDay
+            }
+        }
+        slot1{
+            id
+            owner
+            delegate
+            winningBid
+            oldBid
+            startTime
+            expirationTime
+            taxRatePerDay
+            claims{
+                id
+                owner
+                winningBid
+                oldBid
+                startTime
+                expirationTime
+                taxRatePerDay
+            }
+        }
+        slot2{
+            id
+            owner
+            delegate
+            winningBid
+            oldBid
+            startTime
+            expirationTime
+            taxRatePerDay
+            claims{
+                id
+                owner
+                winningBid
+                oldBid
+                startTime
+                expirationTime
+                taxRatePerDay
+            }
+        }
+        stakers{
+            id
+            staked
+            rank
+        }
+        numStakers
+        totalStaked
+        stakedPercentiles
+    }
+}

packages/eden-watcher/src/gql/queries/producer.gql

@@ -0,0 +1,10 @@
+query producer($id: String!, $blockHash: String!){
+    producer(id: $id, blockHash: $blockHash){
+        id
+        active
+        rewardCollector
+        rewards
+        confirmedBlocks
+        pendingEpochBlocks
+    }
+}

packages/eden-watcher/src/gql/queries/producerEpoch.gql

@@ -0,0 +1,46 @@
+query producerEpoch($id: String!, $blockHash: String!){
+    producerEpoch(id: $id, blockHash: $blockHash){
+        id
+        address
+        epoch{
+            id
+            finalized
+            epochNumber
+            startBlock{
+                cid
+                hash
+                number
+                timestamp
+                parentHash
+            }
+            endBlock{
+                cid
+                hash
+                number
+                timestamp
+                parentHash
+            }
+            producerBlocks
+            allBlocks
+            producerBlocksRatio
+            producerRewards{
+                id
+                address
+                epoch{
+                    id
+                    finalized
+                    epochNumber
+                    producerBlocks
+                    allBlocks
+                    producerBlocksRatio
+                }
+                totalRewards
+                blocksProduced
+                blocksProducedRatio
+            }
+        }
+        totalRewards
+        blocksProduced
+        blocksProducedRatio
+    }
+}

packages/eden-watcher/src/gql/queries/producerRewardCollectorChange.gql

@@ -0,0 +1,8 @@
+query producerRewardCollectorChange($id: String!, $blockHash: String!){
+    producerRewardCollectorChange(id: $id, blockHash: $blockHash){
+        id
+        blockNumber
+        producer
+        rewardCollector
+    }
+}

packages/eden-watcher/src/gql/queries/producerSet.gql

@@ -0,0 +1,13 @@
+query producerSet($id: String!, $blockHash: String!){
+    producerSet(id: $id, blockHash: $blockHash){
+        id
+        producers{
+            id
+            active
+            rewardCollector
+            rewards
+            confirmedBlocks
+            pendingEpochBlocks
+        }
+    }
+}

packages/eden-watcher/src/gql/queries/producerSetChange.gql

@@ -0,0 +1,8 @@
+query producerSetChange($id: String!, $blockHash: String!){
+    producerSetChange(id: $id, blockHash: $blockHash){
+        id
+        blockNumber
+        producer
+        changeType
+    }
+}

packages/eden-watcher/src/gql/queries/rewardSchedule.gql

@@ -0,0 +1,104 @@
+query rewardSchedule($id: String!, $blockHash: String!){
+    rewardSchedule(id: $id, blockHash: $blockHash){
+        id
+        rewardScheduleEntries{
+            id
+            startTime
+            epochDuration
+            rewardsPerEpoch
+        }
+        lastEpoch{
+            id
+            finalized
+            epochNumber
+            startBlock{
+                cid
+                hash
+                number
+                timestamp
+                parentHash
+            }
+            endBlock{
+                cid
+                hash
+                number
+                timestamp
+                parentHash
+            }
+            producerBlocks
+            allBlocks
+            producerBlocksRatio
+            producerRewards{
+                id
+                address
+                epoch{
+                    id
+                    finalized
+                    epochNumber
+                    startBlock{
+                        cid
+                        hash
+                        number
+                        timestamp
+                        parentHash
+                    }
+                    endBlock{
+                        cid
+                        hash
+                        number
+                        timestamp
+                        parentHash
+                    }
+                    producerBlocks
+                    allBlocks
+                    producerBlocksRatio
+                    producerRewards{
+                        id
+                        address
+                        totalRewards
+                        blocksProduced
+                        blocksProducedRatio
+                    }
+                }
+                totalRewards
+                blocksProduced
+                blocksProducedRatio
+            }
+        }
+        pendingEpoch{
+            id
+            finalized
+            epochNumber
+            startBlock{
+                cid
+                hash
+                number
+                timestamp
+                parentHash
+            }
+            endBlock{
+                cid
+                hash
+                number
+                timestamp
+                parentHash
+            }
+            producerBlocks
+            allBlocks
+            producerBlocksRatio
+            producerRewards{
+                id
+                address
+                totalRewards
+                blocksProduced
+                blocksProducedRatio
+            }
+        }
+        activeRewardScheduleEntry{
+            id
+            startTime
+            epochDuration
+            rewardsPerEpoch
+        }
+    }
+}

packages/eden-watcher/src/gql/queries/rewardScheduleEntry.gql

@@ -0,0 +1,8 @@
+query rewardScheduleEntry($id: String!, $blockHash: String!){
+    rewardScheduleEntry(id: $id, blockHash: $blockHash){
+        id
+        startTime
+        epochDuration
+        rewardsPerEpoch
+    }
+}

packages/eden-watcher/src/gql/queries/slash.gql

@@ -0,0 +1,34 @@
+query slash($id: String!, $blockHash: String!){
+    slash(id: $id, blockHash: $blockHash){
+        id
+        timestamp
+        account{
+            id
+            totalClaimed
+            totalSlashed
+            claims{
+                id
+                timestamp
+                index
+                account{
+                    id
+                    totalClaimed
+                    totalSlashed
+                    slashes{
+                        id
+                        timestamp
+                        account{
+                            id
+                            totalClaimed
+                            totalSlashed
+                        }
+                        slashed
+                    }
+                }
+                totalEarned
+                claimed
+            }
+        }
+        slashed
+    }
+}

packages/eden-watcher/src/gql/queries/slot.gql

@@ -0,0 +1,31 @@
+query slot($id: String!, $blockHash: String!){
+    slot(id: $id, blockHash: $blockHash){
+        id
+        owner
+        delegate
+        winningBid
+        oldBid
+        startTime
+        expirationTime
+        taxRatePerDay
+        claims{
+            id
+            slot{
+                id
+                owner
+                delegate
+                winningBid
+                oldBid
+                startTime
+                expirationTime
+                taxRatePerDay
+            }
+            owner
+            winningBid
+            oldBid
+            startTime
+            expirationTime
+            taxRatePerDay
+        }
+    }
+}

packages/eden-watcher/src/gql/queries/slotClaim.gql

@@ -0,0 +1,40 @@
+query slotClaim($id: String!, $blockHash: String!){
+    slotClaim(id: $id, blockHash: $blockHash){
+        id
+        slot{
+            id
+            owner
+            delegate
+            winningBid
+            oldBid
+            startTime
+            expirationTime
+            taxRatePerDay
+            claims{
+                id
+                slot{
+                    id
+                    owner
+                    delegate
+                    winningBid
+                    oldBid
+                    startTime
+                    expirationTime
+                    taxRatePerDay
+                }
+                owner
+                winningBid
+                oldBid
+                startTime
+                expirationTime
+                taxRatePerDay
+            }
+        }
+        owner
+        winningBid
+        oldBid
+        startTime
+        expirationTime
+        taxRatePerDay
+    }
+}

packages/eden-watcher/src/gql/queries/staker.gql

@@ -0,0 +1,7 @@
+query staker($id: String!, $blockHash: String!){
+    staker(id: $id, blockHash: $blockHash){
+        id
+        staked
+        rank
+    }
+}

packages/eden-watcher/src/gql/subscriptions/index.ts

@@ -0,0 +1,4 @@
+import fs from 'fs';
+import path from 'path';
+
+export const onEvent = fs.readFileSync(path.join(__dirname, 'onEvent.gql'), 'utf8');

packages/eden-watcher/src/gql/subscriptions/onEvent.gql

@@ -0,0 +1,75 @@
+subscription onEvent{
+    onEvent{
+        block{
+            cid
+            hash
+            number
+            timestamp
+            parentHash
+        }
+        tx{
+            hash
+            index
+            from
+            to
+        }
+        contract
+        eventIndex
+        event{
+            ... on TransferEvent {
+                from
+                to
+                value
+            }
+            ... on ApprovalEvent {
+                owner
+                spender
+                value
+            }
+            ... on AuthorizationUsedEvent {
+                authorizer
+                nonce
+            }
+            ... on AdminUpdatedEvent {
+                newAdmin
+                oldAdmin
+            }
+            ... on TaxRateUpdatedEvent {
+                newNumerator
+                newDenominator
+                oldNumerator
+                oldDenominator
+            }
+            ... on SlotClaimedEvent {
+                slot
+                owner
+                delegate
+                newBidAmount
+                oldBidAmount
+                taxNumerator
+                taxDenominator
+            }
+            ... on SlotDelegateUpdatedEvent {
+                slot
+                owner
+                newDelegate
+                oldDelegate
+            }
+            ... on StakeEvent {
+                staker
+                stakeAmount
+            }
+            ... on UnstakeEvent {
+                staker
+                unstakedAmount
+            }
+            ... on WithdrawEvent {
+                withdrawer
+                withdrawalAmount
+            }
+        }
+        proof{
+            data
+        }
+    }
+}

packages/eden-watcher/src/hooks.ts

@@ -0,0 +1,38 @@
+//
+// Copyright 2021 Vulcanize, Inc.
+//
+
+import assert from 'assert';
+
+import { Indexer, ResultEvent } from './indexer';
+
+export async function createInitialCheckpoint (indexer: Indexer, contractAddress: string, blockHash: string): Promise<void> {
+  assert(indexer);
+  assert(blockHash);
+  assert(contractAddress);
+
+  // Store an empty state in an IPLDBlock.
+  const ipldBlockData: any = {
+    state: {}
+  };
+
+  await indexer.createCheckpoint(contractAddress, blockHash, ipldBlockData);
+}
+
+export async function createStateDiff (indexer: Indexer, blockHash: string): Promise<void> {
+  assert(indexer);
+  assert(blockHash);
+}
+
+export async function createStateCheckpoint (indexer: Indexer, contractAddress: string, blockHash: string): Promise<boolean> {
+  assert(indexer);
+  assert(blockHash);
+  assert(contractAddress);
+
+  return false;
+}
+
+export async function handleEvent (indexer: Indexer, eventData: ResultEvent): Promise<void> {
+  assert(indexer);
+  assert(eventData);
+}

packages/eden-watcher/src/ipfs.ts

@@ -0,0 +1,17 @@
+//
+// Copyright 2021 Vulcanize, Inc.
+//
+
+import { create, IPFSHTTPClient } from 'ipfs-http-client';
+
+export class IPFSClient {
+  _client: IPFSHTTPClient
+
+  constructor (url: string) {
+    this._client = create({ url });
+  }
+
+  async push (data: any): Promise<void> {
+    await this._client.dag.put(data, { format: 'dag-cbor', hashAlg: 'sha2-256' });
+  }
+}

packages/eden-watcher/src/job-runner.ts

@@ -0,0 +1,163 @@
+//
+// Copyright 2021 Vulcanize, Inc.
+//
+
+import path from 'path';
+import assert from 'assert';
+import 'reflect-metadata';
+import yargs from 'yargs';
+import { hideBin } from 'yargs/helpers';
+import debug from 'debug';
+
+import {
+  getConfig,
+  Config,
+  JobQueue,
+  JobRunner as BaseJobRunner,
+  QUEUE_BLOCK_PROCESSING,
+  QUEUE_EVENT_PROCESSING,
+  QUEUE_BLOCK_CHECKPOINT,
+  QUEUE_HOOKS,
+  QUEUE_IPFS,
+  JobQueueConfig,
+  DEFAULT_CONFIG_PATH,
+  initClients
+} from '@vulcanize/util';
+import { GraphWatcher, Database as GraphDatabase } from '@vulcanize/graph-node';
+
+import { Indexer } from './indexer';
+import { Database } from './database';
+
+const log = debug('vulcanize:job-runner');
+
+export class JobRunner {
+  _indexer: Indexer
+  _jobQueue: JobQueue
+  _baseJobRunner: BaseJobRunner
+  _jobQueueConfig: JobQueueConfig
+
+  constructor (jobQueueConfig: JobQueueConfig, indexer: Indexer, jobQueue: JobQueue) {
+    this._jobQueueConfig = jobQueueConfig;
+    this._indexer = indexer;
+    this._jobQueue = jobQueue;
+    this._baseJobRunner = new BaseJobRunner(this._jobQueueConfig, this._indexer, this._jobQueue);
+  }
+
+  async start (): Promise<void> {
+    await this.subscribeBlockProcessingQueue();
+    await this.subscribeEventProcessingQueue();
+    await this.subscribeBlockCheckpointQueue();
+    await this.subscribeHooksQueue();
+    await this.subscribeIPFSQueue();
+  }
+
+  async subscribeBlockProcessingQueue (): Promise<void> {
+    await this._jobQueue.subscribe(QUEUE_BLOCK_PROCESSING, async (job) => {
+      // TODO Call pre-block hook here (Directly or indirectly (Like done through indexer.processEvent for events)).
+
+      await this._baseJobRunner.processBlock(job);
+
+      await this._jobQueue.markComplete(job);
+    });
+  }
+
+  async subscribeEventProcessingQueue (): Promise<void> {
+    await this._jobQueue.subscribe(QUEUE_EVENT_PROCESSING, async (job) => {
+      const event = await this._baseJobRunner.processEvent(job);
+
+      const watchedContract = await this._indexer.isWatchedContract(event.contract);
+      if (watchedContract) {
+        await this._indexer.processEvent(event);
+      }
+
+      await this._jobQueue.markComplete(job);
+    });
+  }
+
+  async subscribeHooksQueue (): Promise<void> {
+    await this._jobQueue.subscribe(QUEUE_HOOKS, async (job) => {
+      const { data: { blockNumber } } = job;
+
+      const hookStatus = await this._indexer.getHookStatus();
+
+      if (hookStatus && hookStatus.latestProcessedBlockNumber < (blockNumber - 1)) {
+        const message = `Hooks for blockNumber ${blockNumber - 1} not processed yet, aborting`;
+        log(message);
+
+        throw new Error(message);
+      }
+
+      await this._indexer.processCanonicalBlock(job);
+
+      await this._jobQueue.markComplete(job);
+    });
+  }
+
+  async subscribeBlockCheckpointQueue (): Promise<void> {
+    await this._jobQueue.subscribe(QUEUE_BLOCK_CHECKPOINT, async (job) => {
+      await this._indexer.processCheckpoint(job);
+
+      await this._jobQueue.markComplete(job);
+    });
+  }
+
+  async subscribeIPFSQueue (): Promise<void> {
+    await this._jobQueue.subscribe(QUEUE_IPFS, async (job) => {
+      const { data: { data } } = job;
+
+      await this._indexer.pushToIPFS(data);
+
+      await this._jobQueue.markComplete(job);
+    });
+  }
+}
+
+export const main = async (): Promise<any> => {
+  const argv = await yargs(hideBin(process.argv))
+    .option('f', {
+      alias: 'config-file',
+      demandOption: true,
+      describe: 'configuration file path (toml)',
+      type: 'string',
+      default: DEFAULT_CONFIG_PATH
+    })
+    .argv;
+
+  const config: Config = await getConfig(argv.f);
+  const { ethClient, postgraphileClient, ethProvider } = await initClients(config);
+
+  const db = new Database(config.database);
+  await db.init();
+
+  const graphDb = new GraphDatabase(config.database, path.resolve(__dirname, 'entity/*'));
+  await graphDb.init();
+
+  const graphWatcher = new GraphWatcher(graphDb, postgraphileClient, config.server.subgraphPath);
+
+  const indexer = new Indexer(config.server, db, ethClient, postgraphileClient, ethProvider, graphWatcher);
+
+  graphWatcher.setIndexer(indexer);
+  await graphWatcher.init();
+
+  const jobQueueConfig = config.jobQueue;
+  assert(jobQueueConfig, 'Missing job queue config');
+
+  const { dbConnectionString, maxCompletionLagInSecs } = jobQueueConfig;
+  assert(dbConnectionString, 'Missing job queue db connection string');
+
+  const jobQueue = new JobQueue({ dbConnectionString, maxCompletionLag: maxCompletionLagInSecs });
+  await jobQueue.start();
+
+  const jobRunner = new JobRunner(jobQueueConfig, indexer, jobQueue);
+  await jobRunner.start();
+};
+
+main().then(() => {
+  log('Starting job runner...');
+}).catch(err => {
+  log(err);
+});
+
+process.on('uncaughtException', err => {
+  log('uncaughtException', err);
+});

packages/eden-watcher/src/resolvers.ts

@@ -0,0 +1,210 @@
+//
+// Copyright 2021 Vulcanize, Inc.
+//
+
+import assert from 'assert';
+import BigInt from 'apollo-type-bigint';
+import debug from 'debug';
+
+import { Indexer } from './indexer';
+import { EventWatcher } from './events';
+
+import { Producer } from './entity/Producer';
+import { ProducerSet } from './entity/ProducerSet';
+import { ProducerSetChange } from './entity/ProducerSetChange';
+import { ProducerRewardCollectorChange } from './entity/ProducerRewardCollectorChange';
+import { RewardScheduleEntry } from './entity/RewardScheduleEntry';
+import { RewardSchedule } from './entity/RewardSchedule';
+import { ProducerEpoch } from './entity/ProducerEpoch';
+import { Epoch } from './entity/Epoch';
+import { SlotClaim } from './entity/SlotClaim';
+import { Slot } from './entity/Slot';
+import { Staker } from './entity/Staker';
+import { Network } from './entity/Network';
+import { Distributor } from './entity/Distributor';
+import { Distribution } from './entity/Distribution';
+import { Claim } from './entity/Claim';
+import { Slash } from './entity/Slash';
+import { Account } from './entity/Account';
+
+const log = debug('vulcanize:resolver');
+
+export const createResolvers = async (indexer: Indexer, eventWatcher: EventWatcher): Promise<any> => {
+  assert(indexer);
+
+  return {
+    BigInt: new BigInt('bigInt'),
+
+    Event: {
+      __resolveType: (obj: any) => {
+        assert(obj.__typename);
+
+        return obj.__typename;
+      }
+    },
+
+    Subscription: {
+      onEvent: {
+        subscribe: () => eventWatcher.getEventIterator()
+      }
+    },
+
+    Mutation: {
+      watchContract: (_: any, { address, kind, checkpoint, startingBlock }: { address: string, kind: string, checkpoint: boolean, startingBlock: number }): Promise<boolean> => {
+        log('watchContract', address, kind, checkpoint, startingBlock);
+
+        return indexer.watchContract(address, kind, checkpoint, startingBlock);
+      }
+    },
+
+    Query: {
+      producer: async (_: any, { id, blockHash }: { id: string, blockHash: string }): Promise<Producer | undefined> => {
+        log('producer', id, blockHash);
+
+        return indexer.getSubgraphEntity(Producer, id, blockHash);
+      },
+
+      producerSet: async (_: any, { id, blockHash }: { id: string, blockHash: string }): Promise<ProducerSet | undefined> => {
+        log('producerSet', id, blockHash);
+
+        return indexer.getSubgraphEntity(ProducerSet, id, blockHash);
+      },
+
+      producerSetChange: async (_: any, { id, blockHash }: { id: string, blockHash: string }): Promise<ProducerSetChange | undefined> => {
+        log('producerSetChange', id, blockHash);
+
+        return indexer.getSubgraphEntity(ProducerSetChange, id, blockHash);
+      },
+
+      producerRewardCollectorChange: async (_: any, { id, blockHash }: { id: string, blockHash: string }): Promise<ProducerRewardCollectorChange | undefined> => {
+        log('producerRewardCollectorChange', id, blockHash);
+
+        return indexer.getSubgraphEntity(ProducerRewardCollectorChange, id, blockHash);
+      },
+
+      rewardScheduleEntry: async (_: any, { id, blockHash }: { id: string, blockHash: string }): Promise<RewardScheduleEntry | undefined> => {
+        log('rewardScheduleEntry', id, blockHash);
+
+        return indexer.getSubgraphEntity(RewardScheduleEntry, id, blockHash);
+      },
+
+      rewardSchedule: async (_: any, { id, blockHash }: { id: string, blockHash: string }): Promise<RewardSchedule | undefined> => {
+        log('rewardSchedule', id, blockHash);
+
+        return indexer.getSubgraphEntity(RewardSchedule, id, blockHash);
+      },
+
+      producerEpoch: async (_: any, { id, blockHash }: { id: string, blockHash: string }): Promise<ProducerEpoch | undefined> => {
+        log('producerEpoch', id, blockHash);
+
+        return indexer.getSubgraphEntity(ProducerEpoch, id, blockHash);
+      },
+
+      // block: async (_: any, { id, blockHash }: { id: string, blockHash: string }): Promise<Block | undefined> => {
+      //   log('block', id, blockHash);
+
+      //   return indexer.getSubgraphEntity(Block, id, blockHash);
+      // },
+
+      epoch: async (_: any, { id, blockHash }: { id: string, blockHash: string }): Promise<Epoch | undefined> => {
+        log('epoch', id, blockHash);
+
+        return indexer.getSubgraphEntity(Epoch, id, blockHash);
+      },
+
+      slotClaim: async (_: any, { id, blockHash }: { id: string, blockHash: string }): Promise<SlotClaim | undefined> => {
+        log('slotClaim', id, blockHash);
+
+        return indexer.getSubgraphEntity(SlotClaim, id, blockHash);
+      },
+
+      slot: async (_: any, { id, blockHash }: { id: string, blockHash: string }): Promise<Slot | undefined> => {
+        log('slot', id, blockHash);
+
+        return indexer.getSubgraphEntity(Slot, id, blockHash);
+      },
+
+      staker: async (_: any, { id, blockHash }: { id: string, blockHash: string }): Promise<Staker | undefined> => {
+        log('staker', id, blockHash);
+
+        return indexer.getSubgraphEntity(Staker, id, blockHash);
+      },
+
+      network: async (_: any, { id, blockHash }: { id: string, blockHash: string }): Promise<Network | undefined> => {
+        log('network', id, blockHash);
+
+        return indexer.getSubgraphEntity(Network, id, blockHash);
+      },
+
+      distributor: async (_: any, { id, blockHash }: { id: string, blockHash: string }): Promise<Distributor | undefined> => {
+        log('distributor', id, blockHash);
+
+        return indexer.getSubgraphEntity(Distributor, id, blockHash);
+      },
+
+      distribution: async (_: any, { id, blockHash }: { id: string, blockHash: string }): Promise<Distribution | undefined> => {
+        log('distribution', id, blockHash);
+
+        return indexer.getSubgraphEntity(Distribution, id, blockHash);
+      },
+
+      claim: async (_: any, { id, blockHash }: { id: string, blockHash: string }): Promise<Claim | undefined> => {
+        log('claim', id, blockHash);
+
+        return indexer.getSubgraphEntity(Claim, id, blockHash);
+      },
+
+      slash: async (_: any, { id, blockHash }: { id: string, blockHash: string }): Promise<Slash | undefined> => {
+        log('slash', id, blockHash);
+
+        return indexer.getSubgraphEntity(Slash, id, blockHash);
+      },
+
+      account: async (_: any, { id, blockHash }: { id: string, blockHash: string }): Promise<Account | undefined> => {
+        log('account', id, blockHash);
+
+        return indexer.getSubgraphEntity(Account, id, blockHash);
+      },
+
+      events: async (_: any, { blockHash, contractAddress, name }: { blockHash: string, contractAddress: string, name?: string }) => {
+        log('events', blockHash, contractAddress, name);
+
+        const block = await indexer.getBlockProgress(blockHash);
+        if (!block || !block.isComplete) {
+          throw new Error(`Block hash ${blockHash} number ${block?.blockNumber} not processed yet`);
+        }
+
+        const events = await indexer.getEventsByFilter(blockHash, contractAddress, name);
+        return events.map(event => indexer.getResultEvent(event));
+      },
+
+      eventsInRange: async (_: any, { fromBlockNumber, toBlockNumber }: { fromBlockNumber: number, toBlockNumber: number }) => {
+        log('eventsInRange', fromBlockNumber, toBlockNumber);
+
+        const { expected, actual } = await indexer.getProcessedBlockCountForRange(fromBlockNumber, toBlockNumber);
+        if (expected !== actual) {
+          throw new Error(`Range not available, expected ${expected}, got ${actual} blocks in range`);
+        }
+
+        const events = await indexer.getEventsInRange(fromBlockNumber, toBlockNumber);
+        return events.map(event => indexer.getResultEvent(event));
+      },
+
+      getStateByCID: async (_: any, { cid }: { cid: string }) => {
+        log('getStateByCID', cid);
+
+        const ipldBlock = await indexer.getIPLDBlockByCid(cid);
+
+        return ipldBlock && ipldBlock.block.isComplete ? indexer.getResultIPLDBlock(ipldBlock) : undefined;
+      },
+
+      getState: async (_: any, { blockHash, contractAddress, kind = 'diff' }: { blockHash: string, contractAddress: string, kind: string }) => {
+        log('getState', blockHash, contractAddress, kind);
+
+        const ipldBlock = await indexer.getPrevIPLDBlock(blockHash, contractAddress, kind);
+
+        return ipldBlock && ipldBlock.block.isComplete ? indexer.getResultIPLDBlock(ipldBlock) : undefined;
+      }
+    }
+  };
+};

packages/eden-watcher/src/schema.gql

@@ -0,0 +1,391 @@
+scalar BigInt
+
+type Proof {
+  data: String!
+}
+
+type ResultBoolean {
+  value: Boolean!
+  proof: Proof
+}
+
+type ResultString {
+  value: String!
+  proof: Proof
+}
+
+type ResultInt {
+  value: Int!
+  proof: Proof
+}
+
+type ResultBigInt {
+  value: BigInt!
+  proof: Proof
+}
+
+type Block {
+  cid: String!
+  hash: String!
+  number: Int!
+  timestamp: Int!
+  parentHash: String!
+}
+
+type Transaction {
+  hash: String!
+  index: Int!
+  from: String!
+  to: String!
+}
+
+type ResultEvent {
+  block: Block!
+  tx: Transaction!
+  contract: String!
+  eventIndex: Int!
+  event: Event!
+  proof: Proof
+}
+
+union Event = TransferERC20Event | ApprovalERC20Event | AuthorizationUsedEvent | AdminUpdatedEvent | TaxRateUpdatedEvent | SlotClaimedEvent | SlotDelegateUpdatedEvent | StakeEvent | UnstakeEvent | WithdrawEvent | TransferERC721Event | ApprovalERC721Event | ApprovalForAllEvent | BlockProducerAddedEvent | BlockProducerRemovedEvent | BlockProducerRewardCollectorChangedEvent | ClaimedEvent | SlashedEvent | MerkleRootUpdatedEvent | AccountUpdatedEvent | PermanentURIEvent | GovernanceChangedEvent | UpdateThresholdChangedEvent | RoleAdminChangedEvent | RoleGrantedEvent | RoleRevokedEvent | RewardScheduleChangedEvent
+
+type TransferERC20Event {
+  from: String!
+  to: String!
+  value: BigInt!
+}
+
+type ApprovalERC20Event {
+  owner: String!
+  spender: String!
+  value: BigInt!
+}
+
+type AuthorizationUsedEvent {
+  authorizer: String!
+  nonce: String!
+}
+
+type AdminUpdatedEvent {
+  newAdmin: String!
+  oldAdmin: String!
+}
+
+type TaxRateUpdatedEvent {
+  newNumerator: Int!
+  newDenominator: Int!
+  oldNumerator: Int!
+  oldDenominator: Int!
+}
+
+type SlotClaimedEvent {
+  slot: Int!
+  owner: String!
+  delegate: String!
+  newBidAmount: Int!
+  oldBidAmount: Int!
+  taxNumerator: Int!
+  taxDenominator: Int!
+}
+
+type SlotDelegateUpdatedEvent {
+  slot: Int!
+  owner: String!
+  newDelegate: String!
+  oldDelegate: String!
+}
+
+type StakeEvent {
+  staker: String!
+  stakeAmount: BigInt!
+}
+
+type UnstakeEvent {
+  staker: String!
+  unstakedAmount: BigInt!
+}
+
+type WithdrawEvent {
+  withdrawer: String!
+  withdrawalAmount: BigInt!
+}
+
+type TransferERC721Event {
+  from: String!
+  to: String!
+  tokenId: BigInt!
+}
+
+type ApprovalERC721Event {
+  owner: String!
+  approved: String!
+  tokenId: BigInt!
+}
+
+type ApprovalForAllEvent {
+  owner: String!
+  operator: String!
+  approved: Boolean!
+}
+
+type BlockProducerAddedEvent {
+  producer: String!
+}
+
+type BlockProducerRemovedEvent {
+  producer: String!
+}
+
+type BlockProducerRewardCollectorChangedEvent {
+  producer: String!
+  collector: String!
+}
+
+type RewardScheduleChangedEvent {
+  # Note: dummy property added as server throws an error for type without any fields.
+  dummy: String
+}
+
+type ClaimedEvent {
+  index: BigInt!
+  totalEarned: BigInt!
+  account: String!
+  claimed: BigInt!
+}
+
+type SlashedEvent {
+  account: String!
+  slashed: BigInt!
+}
+
+type MerkleRootUpdatedEvent {
+  merkleRoot: String!
+  distributionNumber: BigInt!
+  metadataURI: String!
+}
+
+type AccountUpdatedEvent {
+  account: String!
+  totalClaimed: BigInt!
+  totalSlashed: BigInt!
+}
+
+type PermanentURIEvent {
+  value: String!
+  id: BigInt!
+}
+
+type GovernanceChangedEvent {
+  from: String!
+  to: String!
+}
+
+type UpdateThresholdChangedEvent {
+  updateThreshold: BigInt!
+}
+
+type RoleAdminChangedEvent {
+  role: String!
+  previousAdminRole: String!
+  newAdminRole: String!
+}
+
+type RoleGrantedEvent {
+  role: String!
+  account: String!
+  sender: String!
+}
+
+type RoleRevokedEvent {
+  role: String!
+  account: String!
+  sender: String!
+}
+
+type ResultIPLDBlock {
+  block: Block!
+  contractAddress: String!
+  cid: String!
+  kind: String!
+  data: String!
+}
+
+type Query {
+  events(blockHash: String!, contractAddress: String!, name: String): [ResultEvent!]
+  eventsInRange(fromBlockNumber: Int!, toBlockNumber: Int!): [ResultEvent!]
+  producer(id: String!, blockHash: String!): Producer!
+  producerSet(id: String!, blockHash: String!): ProducerSet!
+  producerSetChange(id: String!, blockHash: String!): ProducerSetChange!
+  producerRewardCollectorChange(id: String!, blockHash: String!): ProducerRewardCollectorChange!
+  rewardScheduleEntry(id: String!, blockHash: String!): RewardScheduleEntry!
+  rewardSchedule(id: String!, blockHash: String!): RewardSchedule!
+  producerEpoch(id: String!, blockHash: String!): ProducerEpoch!
+  epoch(id: String!, blockHash: String!): Epoch!
+  slotClaim(id: String!, blockHash: String!): SlotClaim!
+  slot(id: String!, blockHash: String!): Slot!
+  staker(id: String!, blockHash: String!): Staker!
+  network(id: String!, blockHash: String!): Network!
+  distributor(id: String!, blockHash: String!): Distributor!
+  distribution(id: String!, blockHash: String!): Distribution!
+  claim(id: String!, blockHash: String!): Claim!
+  slash(id: String!, blockHash: String!): Slash!
+  account(id: String!, blockHash: String!): Account!
+  getStateByCID(cid: String!): ResultIPLDBlock
+  getState(blockHash: String!, contractAddress: String!, kind: String): ResultIPLDBlock
+}
+
+type Producer {
+  id: ID!
+  active: Boolean!
+  rewardCollector: String
+  rewards: BigInt!
+  confirmedBlocks: BigInt!
+  pendingEpochBlocks: BigInt!
+}
+
+type ProducerSet {
+  id: ID!
+  producers: [Producer!]!
+}
+
+type ProducerSetChange {
+  id: ID!
+  blockNumber: BigInt!
+  producer: String!
+  changeType: ProducerSetChangeType!
+}
+
+enum ProducerSetChangeType {
+  Added
+  Removed
+}
+
+type ProducerRewardCollectorChange {
+  id: ID!
+  blockNumber: BigInt!
+  producer: String!
+  rewardCollector: String!
+}
+
+type RewardScheduleEntry {
+  id: ID!
+  startTime: BigInt!
+  epochDuration: BigInt!
+  rewardsPerEpoch: BigInt!
+}
+
+type RewardSchedule {
+  id: ID!
+  rewardScheduleEntries: [RewardScheduleEntry!]!
+  lastEpoch: Epoch
+  pendingEpoch: Epoch
+  activeRewardScheduleEntry: RewardScheduleEntry
+}
+
+type Epoch {
+  id: ID!
+  finalized: Boolean!
+  epochNumber: BigInt!
+  startBlock: Block
+  endBlock: Block
+  producerBlocks: BigInt!
+  allBlocks: BigInt!
+  producerBlocksRatio: String!
+  producerRewards: [ProducerEpoch!]!
+}
+
+type ProducerEpoch {
+  id: ID!
+  address: String!
+  epoch: Epoch!
+  totalRewards: BigInt!
+  blocksProduced: BigInt!
+  blocksProducedRatio: String!
+}
+
+type SlotClaim {
+  id: ID!
+  slot: Slot!
+  owner: String!
+  winningBid: BigInt!
+  oldBid: BigInt!
+  startTime: BigInt!
+  expirationTime: BigInt!
+  taxRatePerDay: String!
+}
+
+type Slot {
+  id: ID!
+  owner: String!
+  delegate: String!
+  winningBid: BigInt!
+  oldBid: BigInt!
+  startTime: BigInt!
+  expirationTime: BigInt!
+  taxRatePerDay: String!
+  claims: [SlotClaim!]!
+}
+
+type Staker {
+  id: ID!
+  staked: BigInt!
+  rank: BigInt
+}
+
+type Network {
+  id: ID!
+  slot0: Slot
+  slot1: Slot
+  slot2: Slot
+  stakers: [Staker!]!
+  numStakers: BigInt
+  totalStaked: BigInt!
+  stakedPercentiles: [BigInt!]!
+}
+
+type Distributor {
+  id: ID!
+  currentDistribution: Distribution
+}
+
+type Distribution {
+  id: ID!
+  distributor: Distributor!
+  timestamp: BigInt!
+  distributionNumber: BigInt!
+  merkleRoot: String!
+  metadataURI: String!
+}
+
+type Claim {
+  id: ID!
+  timestamp: BigInt!
+  index: BigInt!
+  account: Account!
+  totalEarned: BigInt!
+  claimed: BigInt!
+}
+
+type Account {
+  id: ID!
+  totalClaimed: BigInt!
+  totalSlashed: BigInt!
+  claims: [Claim!]!
+  slashes: [Slash!]!
+}
+
+type Slash {
+  id: ID!
+  timestamp: BigInt!
+  account: Account!
+  slashed: BigInt!
+}
+
+type Mutation {
+  watchContract(address: String!, kind: String!, checkpoint: Boolean!, startingBlock: Int): Boolean!
+}
+
+type Subscription {
+  onEvent: ResultEvent!
+}

packages/eden-watcher/src/server.ts

@@ -0,0 +1,100 @@
+//
+// Copyright 2021 Vulcanize, Inc.
+//
+
+import fs from 'fs';
+import path from 'path';
+import assert from 'assert';
+import 'reflect-metadata';
+import express, { Application } from 'express';
+import { ApolloServer, PubSub } from 'apollo-server-express';
+import yargs from 'yargs';
+import { hideBin } from 'yargs/helpers';
+import debug from 'debug';
+import 'graphql-import-node';
+import { createServer } from 'http';
+
+import { DEFAULT_CONFIG_PATH, getConfig, Config, JobQueue, KIND_ACTIVE, initClients } from '@vulcanize/util';
+import { GraphWatcher, Database as GraphDatabase } from '@vulcanize/graph-node';
+
+import { createResolvers } from './resolvers';
+import { Indexer } from './indexer';
+import { Database } from './database';
+import { EventWatcher } from './events';
+
+const log = debug('vulcanize:server');
+
+export const main = async (): Promise<any> => {
+  const argv = await yargs(hideBin(process.argv))
+    .option('f', {
+      alias: 'config-file',
+      demandOption: true,
+      describe: 'configuration file path (toml)',
+      type: 'string',
+      default: DEFAULT_CONFIG_PATH
+    })
+    .argv;
+
+  const config: Config = await getConfig(argv.f);
+  const { ethClient, postgraphileClient, ethProvider } = await initClients(config);
+
+  const { host, port, kind: watcherKind } = config.server;
+
+  const db = new Database(config.database);
+  await db.init();
+
+  const graphDb = new GraphDatabase(config.database, path.resolve(__dirname, 'entity/*'));
+  await graphDb.init();
+
+  const graphWatcher = new GraphWatcher(graphDb, postgraphileClient, config.server.subgraphPath);
+
+  // Note: In-memory pubsub works fine for now, as each watcher is a single process anyway.
+  // Later: https://www.apollographql.com/docs/apollo-server/data/subscriptions/#production-pubsub-libraries
+  const pubsub = new PubSub();
+  const indexer = new Indexer(config.server, db, ethClient, postgraphileClient, ethProvider, graphWatcher);
+
+  graphWatcher.setIndexer(indexer);
+  await graphWatcher.init();
+
+  const jobQueueConfig = config.jobQueue;
+  assert(jobQueueConfig, 'Missing job queue config');
+
+  const { dbConnectionString, maxCompletionLagInSecs } = jobQueueConfig;
+  assert(dbConnectionString, 'Missing job queue db connection string');
+
+  const jobQueue = new JobQueue({ dbConnectionString, maxCompletionLag: maxCompletionLagInSecs });
+
+  const eventWatcher = new EventWatcher(config.upstream, ethClient, postgraphileClient, indexer, pubsub, jobQueue);
+
+  if (watcherKind === KIND_ACTIVE) {
+    await jobQueue.start();
+    await eventWatcher.start();
+  }
+
+  const resolvers = await createResolvers(indexer, eventWatcher);
+
+  const app: Application = express();
+  const typeDefs = fs.readFileSync(path.join(__dirname, 'schema.gql')).toString();
+  const server = new ApolloServer({
+    typeDefs,
+    resolvers
+  });
+
+  await server.start();
+  server.applyMiddleware({ app });
+
+  const httpServer = createServer(app);
+  server.installSubscriptionHandlers(httpServer);
+
+  httpServer.listen(port, host, () => {
+    log(`Server is listening on host ${host} port ${port}`);
+  });
+
+  return { app, server };
+};
+
+main().then(() => {
+  log('Starting server...');
+}).catch(err => {
+  log(err);
+});

packages/eden-watcher/tsconfig.json

@@ -0,0 +1,74 @@
+{
+  "compilerOptions": {
+    /* Visit https://aka.ms/tsconfig.json to read more about this file */
+
+    /* Basic Options */
+    // "incremental": true,                         /* Enable incremental compilation */
+    "target": "es5",                                /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019', 'ES2020', 'ES2021', or 'ESNEXT'. */
+    "module": "commonjs",                           /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', 'es2020', or 'ESNext'. */
+    // "lib": [],                                   /* Specify library files to be included in the compilation. */
+    // "allowJs": true,                             /* Allow javascript files to be compiled. */
+    // "checkJs": true,                             /* Report errors in .js files. */
+    // "jsx": "preserve",                           /* Specify JSX code generation: 'preserve', 'react-native', 'react', 'react-jsx' or 'react-jsxdev'. */
+    // "declaration": true,                         /* Generates corresponding '.d.ts' file. */
+    // "declarationMap": true,                      /* Generates a sourcemap for each corresponding '.d.ts' file. */
+    // "sourceMap": true,                           /* Generates corresponding '.map' file. */
+    // "outFile": "./",                             /* Concatenate and emit output to single file. */
+    "outDir": "dist",                            /* Redirect output structure to the directory. */
+    // "rootDir": "./",                             /* Specify the root directory of input files. Use to control the output directory structure with --outDir. */
+    // "composite": true,                           /* Enable project compilation */
+    // "tsBuildInfoFile": "./",                     /* Specify file to store incremental compilation information */
+    // "removeComments": true,                      /* Do not emit comments to output. */
+    // "noEmit": true,                              /* Do not emit outputs. */
+    // "importHelpers": true,                       /* Import emit helpers from 'tslib'. */
+    // "downlevelIteration": true,                  /* Provide full support for iterables in 'for-of', spread, and destructuring when targeting 'ES5' or 'ES3'. */
+    // "isolatedModules": true,                     /* Transpile each file as a separate module (similar to 'ts.transpileModule'). */
+
+    /* Strict Type-Checking Options */
+    "strict": true,                                 /* Enable all strict type-checking options. */
+    // "noImplicitAny": true,                       /* Raise error on expressions and declarations with an implied 'any' type. */
+    // "strictNullChecks": true,                    /* Enable strict null checks. */
+    // "strictFunctionTypes": true,                 /* Enable strict checking of function types. */
+    // "strictBindCallApply": true,                 /* Enable strict 'bind', 'call', and 'apply' methods on functions. */
+    // "strictPropertyInitialization": true,        /* Enable strict checking of property initialization in classes. */
+    // "noImplicitThis": true,                      /* Raise error on 'this' expressions with an implied 'any' type. */
+    // "alwaysStrict": true,                        /* Parse in strict mode and emit "use strict" for each source file. */
+
+    /* Additional Checks */
+    // "noUnusedLocals": true,                      /* Report errors on unused locals. */
+    // "noUnusedParameters": true,                  /* Report errors on unused parameters. */
+    // "noImplicitReturns": true,                   /* Report error when not all code paths in function return a value. */
+    // "noFallthroughCasesInSwitch": true,          /* Report errors for fallthrough cases in switch statement. */
+    // "noUncheckedIndexedAccess": true,            /* Include 'undefined' in index signature results */
+    // "noImplicitOverride": true,                  /* Ensure overriding members in derived classes are marked with an 'override' modifier. */
+    // "noPropertyAccessFromIndexSignature": true,  /* Require undeclared properties from index signatures to use element accesses. */
+
+    /* Module Resolution Options */
+    // "moduleResolution": "node",                  /* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */
+    // "baseUrl": "./",                             /* Base directory to resolve non-absolute module names. */
+    // "paths": {},                                 /* A series of entries which re-map imports to lookup locations relative to the 'baseUrl'. */
+    // "rootDirs": [],                              /* List of root folders whose combined content represents the structure of the project at runtime. */
+    // "typeRoots": [],                             /* List of folders to include type definitions from. */
+    // "types": [],                                 /* Type declaration files to be included in compilation. */
+    // "allowSyntheticDefaultImports": true,        /* Allow default imports from modules with no default export. This does not affect code emit, just typechecking. */
+    "esModuleInterop": true,                        /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */
+    // "preserveSymlinks": true,                    /* Do not resolve the real path of symlinks. */
+    // "allowUmdGlobalAccess": true,                /* Allow accessing UMD globals from modules. */
+
+    /* Source Map Options */
+    // "sourceRoot": "",                            /* Specify the location where debugger should locate TypeScript files instead of source locations. */
+    // "mapRoot": "",                               /* Specify the location where debugger should locate map files instead of generated locations. */
+    // "inlineSourceMap": true,                     /* Emit a single file with source maps instead of having a separate file. */
+    // "inlineSources": true,                       /* Emit the source alongside the sourcemaps within a single file; requires '--inlineSourceMap' or '--sourceMap' to be set. */
+
+    /* Experimental Options */
+    "experimentalDecorators": true,                 /* Enables experimental support for ES7 decorators. */
+    // "emitDecoratorMetadata": true,               /* Enables experimental support for emitting type metadata for decorators. */
+
+    /* Advanced Options */
+    "skipLibCheck": true,                           /* Skip type checking of declaration files. */
+    "forceConsistentCasingInFileNames": true,       /* Disallow inconsistently-cased references to the same file. */
+    "resolveJsonModule": true                       /* Enabling the option allows importing JSON, and validating the types in that JSON file. */
+  },
+  "include": ["src/**/*"]
+}