watcher-ts/packages/mobymask-watcher/demo.md

Demo

• The following core services need to be running for the demo:

  • ipld-eth-db
    • Version: v4.2.3-alpha
  • geth
    • State diffing service should use ipld-eth-db for database.
    • Version: v1.10.26-statediff-4.2.2-alpha
    • Endpoint: http://127.0.0.1:8545
  • ipld-eth-server
    • Should use ipld-eth-db for database.
    • Version: 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:

  sudo su - postgres
  
  # If database already exists
  # dropdb mobymask-watcher
  
  createdb mobymask-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):

  # If database already exists
  # dropdb mobymask-watcher-job-queue
  
  createdb mobymask-watcher-job-queue
  

  postgres@tesla:~$ psql -U postgres -h localhost mobymask-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.
  
  mobymask-watcher-job-queue=# CREATE EXTENSION pgcrypto;
  CREATE EXTENSION
  mobymask-watcher-job-queue=# exit
  

• In the config file update the database connection settings.

• In watcher-ts repo, follow the instructions in Setup for installing and building packages.

  # After setup
  yarn && yarn build
  

• Run the job-runner:

  yarn job-runner
  

• Change directory to packages/mobymask-watcher/ and run the watcher:

  yarn server
  

• Clone the MobyMask repo.

• Checkout to the branch with changes for using this watcher:

  # In MobyMask repo.
  git checkout use-laconic-watcher-as-hosted-index
  

• Run yarn to install the packages

  yarn
  

• Deploy the contract:

  cd packages/hardhat
  
  yarn deploy
  # deploying "PhisherRegistry" (tx: 0xaebeb2e883ece1f679304ec46f5dc61ca74f9e168427268a7dfa8802195b8de0)...: deployed at <MOBY_ADDRESS> with 2306221 gas
  # $ hardhat run scripts/publish.js
  # ✅  Published contracts to the subgraph package.
  # Done in 14.28s.
  

  Export the address of the deployed contract to a shell variable for later use:

  export MOBY_ADDRESS="<MOBY_ADDRESS>"
  

• Run the following GQL mutation in watcher GraphQL endpoint http://127.0.0.1:3010/graphql

  mutation {
    watchContract(
      address: "MOBY_ADDRESS"
      kind: "PhisherRegistry"
      checkpoint: true
    )
  }
  

• Get the latest block

  query {
    latestBlock {
      hash
      number
    }
  }
  

• Run the following GQL query in GraphQL endpoint

  query {
    isPhisher(
      blockHash: "LATEST_BLOCK_HASH"
      contractAddress: "MOBY_ADDRESS"
      key0: "TWT:phishername"
    ) {
      value
      proof {
        data
      }
    }
    isMember(
      blockHash: "LATEST_BLOCK_HASH"
      contractAddress: "MOBY_ADDRESS"
      key0: "TWT:membername"
    ) {
      value
      proof {
        data
      }
    }
  }
  

• Run the following GQL subscription in generated watcher GraphQL endpoint:

  subscription {
    onEvent {
      event {
        __typename
        ... on PhisherStatusUpdatedEvent {
          entity
          isPhisher
        },
        ... on MemberStatusUpdatedEvent {
          entity
          isMember
        }
      },
      block {
        number
        hash
      }
    }
  }
  

• Update isPhiser and isMember lists with names

  yarn claimPhisher --contract $MOBY_ADDRESS --name phisherName 
  

  yarn claimMember --contract $MOBY_ADDRESS --name memberName
  

• The events should be visible in the subscription at GQL endpoint. Note down the event blockHash from result.

• The isMember and isPhisher lists should be indexed. Check the database (mobymask-watcher) tables is_phisher and is_member, there should be entries at the event blockHash and the value should be true. The data is indexed in handleEvent method in the hooks file.

• Update the the previous query with event blockHash and check isPhisher and isMember in GraphQL playground

  query {
    isPhisher(
      blockHash: "EVENT_BLOCK_HASH"
      contractAddress: "MOBY_ADDRESS",
      key0: "TWT:phishername"
    ) {
      value
      proof {
        data
      }
    }
  
    isMember(
      blockHash: "EVENT_BLOCK_HASH"
      contractAddress: "MOBY_ADDRESS",
      key0: "TWT:membername"
    ) {
      value
      proof {
        data
      }
    }
  }
  

  The data is fetched from watcher database as it is already indexed.