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combine demo & readme, erc721-watcher

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43
docs/README.md
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@ -77,3 +77,46 @@ Ensure that watcher is of active kind. Update the kind in `server` config to act
kind = "active" kind = "active"
``` ```
### ERC721
* Create a postgres12 database for the watcher:
```bash
sudo su - postgres
createdb erc721-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 erc721-watcher-job-queue
```
```
postgres@tesla:~$ psql -U postgres -h localhost erc721-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.
erc721-watcher-job-queue=# CREATE EXTENSION pgcrypto;
CREATE EXTENSION
erc721-watcher-job-queue=# exit
```
* The following core services should be setup and running on localhost:
* `vulcanize/go-ethereum` [v1.10.18-statediff-4.0.2-alpha](https://github.com/vulcanize/go-ethereum/releases/tag/v1.10.18-statediff-4.0.2-alpha) on port 8545
* `vulcanize/ipld-eth-server` [v4.0.3-alpha](https://github.com/vulcanize/ipld-eth-server/releases/tag/v4.0.3-alpha) with native GQL API enabled, on port 8082
* In the [config file](./environments/local.toml):
* Update the database connection settings.
* Update the `upstream` config and provide the `ipld-eth-server` GQL API endpoint.
* Update the `server` config with state checkpoint settings.

344
packages/erc721-watcher/README.md
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@ -2,106 +2,311 @@
## Setup ## Setup
* Run the following command to install required packages: Run the following command to install required packages:
```bash ```bash
yarn yarn && yarn build
```
If the watcher is "active", first run the job-runner:
```bash
yarn job-runner
```
then run the watcher:
```bash
yarn server
```
For "lazy" watchers, you only need to run the above command.
Deploy an ERC721 token:
```bash
yarn nft:deploy
```
```
# NFT deployed to: 0xNFTAddress
```
Export the address of the deployed token to a shell variable for later use:
```bash
export NFT_ADDRESS="0xNFTAddress"
``` ```
* Create a postgres12 database for the watcher: Run the following GQL mutation in generated watcher GraphQL endpoint http://127.0.0.1:3006/graphql
```bash ```graphql
sudo su - postgres mutation {
createdb erc721-watcher watchContract(
``` address: "0xNFTAddress"
kind: "ERC721"
checkpoint: true
)
}
```
* If the watcher is an `active` watcher: TODO: settle on WC (signer/primary/main...across the docs)
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): Get the signer (primary/main) account address and export to a shell variable:
``` ```bash
createdb erc721-watcher-job-queue yarn account
``` ```
``` ```bash
postgres@tesla:~$ psql -U postgres -h localhost erc721-watcher-job-queue export SIGNER_ADDRESS="0xSignerAddress"
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.
erc721-watcher-job-queue=# CREATE EXTENSION pgcrypto; Connect MetaMask to `http://localhost:8545` (with chain ID `99`)
CREATE EXTENSION
erc721-watcher-job-queue=# exit
```
* The following core services should be setup and running on localhost: Add a an account to Metamask and export the account address to a shell variable for later use:
* `vulcanize/go-ethereum` [v1.10.18-statediff-4.0.2-alpha](https://github.com/vulcanize/go-ethereum/releases/tag/v1.10.18-statediff-4.0.2-alpha) on port 8545 ```bash
export RECIPIENT_ADDRESS="0xRecipientAddress"
```
* `vulcanize/ipld-eth-server` [v4.0.3-alpha](https://github.com/vulcanize/ipld-eth-server/releases/tag/v4.0.3-alpha) with native GQL API enabled, on port 8082 To get the current block hash at any time, run:
* In the [config file](./environments/local.toml): ```bash
yarn block:latest
```
* Update the database connection settings. Run the following GQL query (`eth_call`) in the GraphQL playground at http://127.0.0.1:3006/graphql
* Update the `upstream` config and provide the `ipld-eth-server` GQL API endpoint. ```graphql
query {
name(
blockHash: "LATEST_BLOCK_HASH"
contractAddress: "0xNFTAddress"
) {
value
proof {
data
}
}
symbol(
blockHash: "LATEST_BLOCK_HASH"
contractAddress: "0xNFTAddress"
) {
value
proof {
data
}
}
balanceOf(
blockHash: "LATEST_BLOCK_HASH"
contractAddress: "0xNFTAddress"
owner: "0xSignerAddress"
) {
value
proof {
data
}
}
}
```
* Update the `server` config with state checkpoint settings. Run the following GQL query (`storage`) in generated watcher GraphQL endpoint http://127.0.0.1:3006/graphql
## Customize ```graphql
query {
_name(
blockHash: "LATEST_BLOCK_HASH"
contractAddress: "0xNFTAddress"
) {
value
proof {
data
}
}
_symbol(
blockHash: "LATEST_BLOCK_HASH"
contractAddress: "0xNFTAddress"
) {
value
proof {
data
}
}
_balances(
blockHash: "LATEST_BLOCK_HASH"
contractAddress: "0xNFTAddress"
key0: "0xSignerAddress"
) {
value
proof {
data
}
}
}
```
* Indexing on an event: Run the following GQL subscription in the playground:
* Edit the custom hook function `handleEvent` (triggered on an event) in [hooks.ts](./src/hooks.ts) to perform corresponding indexing using the `Indexer` object. ```graphql
subscription {
onEvent {
event {
__typename
... on TransferEvent {
from
to
tokenId
},
... on ApprovalEvent {
owner
approved
tokenId
}
},
block {
number
hash
}
}
}
```
* 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. Mint token
* Generating state: ```bash
yarn nft:mint --nft $NFT_ADDRESS --to $SIGNER_ADDRESS --token-id 1
```
* Edit the custom hook function `createInitialState` (triggered if the watcher passes the start block, checkpoint: `true`) in [hooks.ts](./src/hooks.ts) to save an initial `State` using the `Indexer` object. - A Transfer event to 0xSignerAddress should be visible in the subscription.
* Edit the custom hook function `createStateDiff` (triggered on a block) in [hooks.ts](./src/hooks.ts) to save the state in a `diff` `State` using the `Indexer` object. The default state (if exists) is updated. - An auto-generated `diff_staged` `State` should be added with parent CID pointing to the initial `checkpoint` `State`.
* 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` `State` using the `Indexer` object. - Custom property `transferCount` should be 1 initially.
## Run - Run the `getState` query at the endpoint to get the latest `State` for 0xNFTAddress:
Follow the steps below or follow the [Demo](./demo.md) ```graphql
query {
getState (
blockHash: "EVENT_BLOCK_HASH"
contractAddress: "0xNFTAddress"
# kind: "checkpoint"
# kind: "diff"
kind: "diff_staged"
) {
cid
block {
cid
hash
number
timestamp
parentHash
}
contractAddress
data
}
}
```
* Run the watcher: - `diff` States get created corresponding to the `diff_staged` blocks when their respective eth_blocks reach the pruned region.
* If the watcher is a `lazy` watcher: - `data` contains the default state and also the custom state property `transferCount` that is indexed in [hooks.ts](./src/hooks.ts) file.
* Run the server: - Get the latest blockHash and run the following query for `transferCount` entity:
```bash ```graphql
yarn server query {
``` transferCount(
block: {
hash: "LATEST_BLOCK_HASH"
}
id: "0xNFTAddress"
) {
id
count
}
}
```
GQL console: http://localhost:3006/graphql *Note: Contract address is assigned to the Entity ID.*
* If the watcher is an `active` watcher: With the latest blockHash, run the following query for `balanceOf` and `ownerOf` (`eth_call`):
* Run the job-runner: ```graphql
query {
fromBalanceOf: balanceOf(
blockHash: "LATEST_BLOCK_HASH"
contractAddress: "0xNFTAddress"
owner: "0xSignerAddress"
) {
value
proof {
data
}
}
toBalanceOf: balanceOf(
blockHash: "LATEST_BLOCK_HASH"
contractAddress: "0xNFTAddress"
owner: "0xRecipientAddress"
) {
value
proof {
data
}
}
ownerOf(
blockHash: "LATEST_BLOCK_HASH"
contractAddress: "0xNFTAddress"
tokenId: 1
) {
value
proof {
data
}
}
}
```
```bash Transfer token
yarn job-runner
```
* Run the server: ```bash
yarn nft:transfer --nft $NFT_ADDRESS --from $SIGNER_ADDRESS --to $RECIPIENT_ADDRESS --token-id 1
```
```bash - An Approval event for SIGNER_ADDRESS shall be visible in the subscription at endpoint.
yarn server
```
GQL console: http://localhost:3012/graphql - A Transfer event to $RECIPIENT_ADDRESS shall be visible in the subscription at endpoint.
* To watch a contract: - An auto-generated `diff_staged` State should be added with parent CID pointing to the previous State.
```bash - Custom property `transferCount` should be incremented after transfer. This can be checked in the `getState` query.
yarn watch:contract --address <contract-address> --kind <contract-kind> --checkpoint <true | false> --starting-block [block-number]
``` - Get the latest blockHash and replace the blockHash in the above `eth_call` query. The result should be different and the token should be transferred to the recipient.
- Run the `getState` query again at the endpoint with the event blockHash.
- Run the `transferCount` entity query again with the latest blockHash. The updated count should be returned.
- After the `diff` block has been created (can check if event block number pruned in yarn server log), create a checkpoint using CLI in `packages/erc721-watcher`:
```bash
yarn checkpoint create --address $NFT_ADDRESS
```
- Run the `getState` query again with the output blockHash and kind `checkpoint` at the endpoint.
- The latest checkpoint should have the aggregate of state diffs since the last checkpoint.
- The `State` entries can be seen in pg-admin in table `state`.
- The state should have auto indexed data and also custom property `transferCount` according to code in [hooks](./src/hooks.ts) file `handleEvent` method.
## Watch
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. * `address`: Address or identifier of the contract to be watched.
* `kind`: Kind of the contract. * `kind`: Kind of the contract.
@ -200,3 +405,20 @@ Follow the steps below or follow the [Demo](./demo.md)
``` ```
* `cid`: CID to be inspected. * `cid`: CID to be inspected.
## 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 `createInitialState` (triggered if the watcher passes the start block, checkpoint: `true`) in [hooks.ts](./src/hooks.ts) to save an initial `State` 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` `State` 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` `State` using the `Indexer` object.

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packages/erc721-watcher/demo.md
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@ -1,343 +0,0 @@
# Demo
* The following core services need to be running for the demo:
* [ipld-eth-db](https://github.com/cerc-io/ipld-eth-db)
* Version: [v4.2.3-alpha](https://github.com/cerc-io/ipld-eth-db/releases/tag/v4.2.3-alpha)
* [geth](https://github.com/cerc-io/go-ethereum)
* State diffing service should use `ipld-eth-db` for database.
* Version: [v1.10.26-statediff-4.2.2-alpha](https://github.com/cerc-io/go-ethereum/releases/tag/v1.10.26-statediff-4.2.2-alpha)
* Endpoint: http://127.0.0.1:8545
* [ipld-eth-server](https://github.com/cerc-io/ipld-eth-server)
* Should use `ipld-eth-db` for database.
* Version: [v4.2.3-alpha](https://github.com/cerc-io/ipld-eth-server/releases/tag/v4.2.3-alpha)
* Endpoints:
* GQL: http://127.0.0.1:8082/graphql
* RPC: http://127.0.0.1:8081
* Create a postgres12 database for the watcher:
```bash
sudo su - postgres
# If database already exists
# dropdb erc721-watcher
createdb erc721-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):
```bash
# If database already exists
# dropdb erc721-watcher-job-queue
createdb erc721-watcher-job-queue
```
```
postgres@tesla:~$ psql -U postgres -h localhost erc721-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.
erc721-watcher-job-queue=# CREATE EXTENSION pgcrypto;
CREATE EXTENSION
erc721-watcher-job-queue=# exit
```
* In the [config file](./environments/local.toml) update the `database` connection settings.
* In `watcher-ts` repo, follow the instructions in [Setup](../../README.md#setup) for installing and building packages.
```bash
# After setup
yarn && yarn build
```
* Run the job-runner:
```bash
yarn job-runner
```
* Run the watcher:
```bash
yarn server
```
* Deploy an ERC721 token:
```bash
yarn nft:deploy
# NFT deployed to: NFT_ADDRESS
```
Export the address of the deployed token to a shell variable for later use:
```bash
export NFT_ADDRESS="<NFT_ADDRESS>"
```
* Run the following GQL mutation in generated watcher GraphQL endpoint http://127.0.0.1:3006/graphql
```graphql
mutation {
watchContract(
address: "NFT_ADDRESS"
kind: "ERC721"
checkpoint: true
)
}
```
* Get the signer account address and export to a shell variable:
```bash
yarn account
```
```bash
export SIGNER_ADDRESS="<SIGNER_ADDRESS>"
```
* Connect MetaMask to `http://localhost:8545` (with chain ID `99`)
* Add a second account to Metamask and export the account address to a shell variable for later use:
```bash
export RECIPIENT_ADDRESS="<RECIPIENT_ADDRESS>"
```
* To get the current block hash at any time, run:
```bash
yarn block:latest
```
* Run the following GQL query (`eth_call`) in generated watcher GraphQL endpoint http://127.0.0.1:3006/graphql
```graphql
query {
name(
blockHash: "LATEST_BLOCK_HASH"
contractAddress: "NFT_ADDRESS"
) {
value
proof {
data
}
}
symbol(
blockHash: "LATEST_BLOCK_HASH"
contractAddress: "NFT_ADDRESS"
) {
value
proof {
data
}
}
balanceOf(
blockHash: "LATEST_BLOCK_HASH"
contractAddress: "NFT_ADDRESS"
owner: "SIGNER_ADDRESS"
) {
value
proof {
data
}
}
}
```
* Run the following GQL query (`storage`) in generated watcher GraphQL endpoint http://127.0.0.1:3006/graphql
```graphql
query {
_name(
blockHash: "LATEST_BLOCK_HASH"
contractAddress: "NFT_ADDRESS"
) {
value
proof {
data
}
}
_symbol(
blockHash: "LATEST_BLOCK_HASH"
contractAddress: "NFT_ADDRESS"
) {
value
proof {
data
}
}
_balances(
blockHash: "LATEST_BLOCK_HASH"
contractAddress: "NFT_ADDRESS"
key0: "SIGNER_ADDRESS"
) {
value
proof {
data
}
}
}
```
* Run the following GQL subscription in generated watcher GraphQL endpoint:
```graphql
subscription {
onEvent {
event {
__typename
... on TransferEvent {
from
to
tokenId
},
... on ApprovalEvent {
owner
approved
tokenId
}
},
block {
number
hash
}
}
}
```
* Mint token
```bash
yarn nft:mint --nft $NFT_ADDRESS --to $SIGNER_ADDRESS --token-id 1
```
* A Transfer event to SIGNER_ADDRESS shall be visible in the subscription at endpoint.
* An auto-generated `diff_staged` `State` should be added with parent CID pointing to the initial `checkpoint` `State`.
* Custom property `transferCount` should be 1 initially.
* Run the `getState` query at the endpoint to get the latest `State` for NFT_ADDRESS:
```graphql
query {
getState (
blockHash: "EVENT_BLOCK_HASH"
contractAddress: "NFT_ADDRESS"
# kind: "checkpoint"
# kind: "diff"
kind: "diff_staged"
) {
cid
block {
cid
hash
number
timestamp
parentHash
}
contractAddress
data
}
}
```
* `diff` States get created corresponding to the `diff_staged` blocks when their respective eth_blocks reach the pruned region.
* `data` contains the default state and also the custom state property `transferCount` that is indexed in [hooks.ts](./src/hooks.ts) file.
* Get the latest blockHash and run the following query for `transferCount` entity:
```graphql
query {
transferCount(
block: {
hash: "LATEST_BLOCK_HASH"
}
id: "NFT_ADDRESS"
) {
id
count
}
}
```
*Note: Contract address is assigned to the Entity ID.*
* With the latest blockHash, run the following query for `balanceOf` and `ownerOf` (`eth_call`):
```graphql
query {
fromBalanceOf: balanceOf(
blockHash: "LATEST_BLOCK_HASH"
contractAddress: "NFT_ADDRESS"
owner: "SIGNER_ADDRESS"
) {
value
proof {
data
}
}
toBalanceOf: balanceOf(
blockHash: "LATEST_BLOCK_HASH"
contractAddress: "NFT_ADDRESS"
owner: "RECIPIENT_ADDRESS"
) {
value
proof {
data
}
}
ownerOf(
blockHash: "LATEST_BLOCK_HASH"
contractAddress: "NFT_ADDRESS"
tokenId: 1
) {
value
proof {
data
}
}
}
```
* Transfer token
```bash
yarn nft:transfer --nft $NFT_ADDRESS --from $SIGNER_ADDRESS --to $RECIPIENT_ADDRESS --token-id 1
```
* An Approval event for SIGNER_ADDRESS shall be visible in the subscription at endpoint.
* A Transfer event to $RECIPIENT_ADDRESS shall be visible in the subscription at endpoint.
* An auto-generated `diff_staged` State should be added with parent CID pointing to the previous State.
* Custom property `transferCount` should be incremented after transfer. This can be checked in the `getState` query.
* Get the latest blockHash and replace the blockHash in the above `eth_call` query. The result should be different and the token should be transferred to the recipient.
* Run the `getState` query again at the endpoint with the event blockHash.
* Run the `transferCount` entity query again with the latest blockHash. The updated count should be returned.
* After the `diff` block has been created (can check if event block number pruned in yarn server log), create a checkpoint using CLI in `packages/erc721-watcher`:
```bash
yarn checkpoint create --address $NFT_ADDRESS
```
* Run the `getState` query again with the output blockHash and kind `checkpoint` at the endpoint.
* The latest checkpoint should have the aggregate of state diffs since the last checkpoint.
* The `State` entries can be seen in pg-admin in table `state`.
* The state should have auto indexed data and also custom property `transferCount` according to code in [hooks](./src/hooks.ts) file `handleEvent` method.