EOS-BP-Developers / eosio-graphql

Deploy a GraphQL API + MongoDB for the EOSIO blockchain

EOSIO GraphQL API

Deploy a GraphQL API + MongoDB for the EOSIO blockchain.

Install

$ git clone https://github.com/EOS-BP-Developers/eosio-graphql.git
$ cd eosio-graphql
$ npm install

Quickstart

$ npm start
🚀 Server ready at http://localhost:4000/graphql

Programmatic use

import { eosGraphQLGateway, gql } from 'eosio-graphql'
import { getMongoClient } from "./mongoClient";

(async () => {

  const {
    startService,
    server, // optional
    service, // optional
  } = eosGraphQLGateway({
    mongoClient: await getMongoClient(),
    host: 'localhost', // optional
    port: 4000, // optional
    buildSchema: ({ // optional
      scalarSchema,
      typeSchema,
      querySchema,
    }) => gql`
      ${scalarSchema}
      # my scalars
      schema {
        query: Query
      }
      ${typeSchema}
      # my types
      type Query {
        ${querySchema}
        # my queries
      }
    `,
    buildResolvers(resolvers) {  // optional
      return Object.assign(resolvers, { /* my resolvers */ });
    },
    abiDir = './my-abi-files/',  // optional
  });

  server.use(/* ... */);  // optional

  service.use(/* ... */);  // optional

  startService();

})();

Contributors

This is made with ♥ by:

• EOS Nation (eosnationftw)

Voting on the EOSIO mainnet helps build more awesome tools for the EOS community.

GraphQL examples

eosio.token transfer

Find most recent 50 transfers from chainceout11 using the KARMA token contract.

query {
  eosiotoken {
    transfer (
      limit: 50,
      from: "chainceout11"
      contracts: ["therealkarma"],
      sort: {block_num: -1}
    ) {
      data {
        from
        to
        quantity
        memo
      }
    }
  }
}

eosio blocks

Find the most recent irreversible blocks.

query {
  blocks(sort: { block_num: -1 }, match: { irreversible: true }) {
    block_num
    irreversible
    block {
      producer
    }
  }
}

eosio account

Query an account by name & block_num to get the exact stake_quanity at that given referen block number.

query {
  account(name:"eosnationftw", block_num:6000000) {
    name
    block_num
    stake_quantity
    stake_net_quantity
    stake_cpu_quantity
  }
}

eosio.forum post

Query all posts based on an exact title match.

query {
  eosforumtest {
    post(title: "SYSTEM_UPGRADE") {
      block_num
      data {
        account
        post_uuid
        title
        content
      }
    }
  }
}

eosio.forum vote

Query all votes based on a particular proposition.

query {
  eosforumtest {
    vote(proposition: "http://ballista/eosconstitution.io/public/proposals/4/articles/61#comment-1") {
      block_num
      data {
        voter
        proposition
        proposition_hash
        vote_value
      }
    }
  }
}