Vikrammel/eosio-blockAPI

A GraphQL API using node.js and express.js to fetch recent blocks from the EOS blockchain

eosio-blockAPI

by Vikram Melkote

Description

A GraphQL API using node.js and express.js to fetch recent blocks from the EOS blockchain

Usage

1. in project directory: docker-compose up --build

2. Navigate to http://localhost:3001/blocks in a web browser

3. Input query examples:

   basic query:

    {
      lastBlock {
        id
        timestamp
        txn_count
        block_num
      }
      blocks(numbers: [1, 4]){
        id
        timestamp
        txn_count
        block_num
      }
    }

   full query:

    {
      blocks(numbers: [241, 142, 24]) {
        id
        timestamp
        block_num
    	    txn_count
        ref_block_prefix
        regions {
          region
          cycles_summary {
            read_locks {
              account
              scope
            }
            write_locks {
              account
              scope
            }
            transactions {
              status
              id
            }
          }
        }
        input_transactions {
          signatures
          compression
          hex_data
          data {
            expiration
            region
            ref_block_num
            ref_block_prefix
            packed_bandwidth_words
            context_free_actions {
              account
              name
              authorization {
                actor
                permission
              }
              data {
                to
                from
                quantity
                memo
              }
              hex_data
            }
            context_free_cpu_bandwidth
            actions {
              account
              name
              authorization {
                actor
                permission
              }
              data {
                to
                from
                quantity
                memo
              }
              hex_data
            }
          }
        }
      }
    }

   ... or anything in between, eg:

    {
      blocks(numbers: [4]) {
        id
        block_num
        timestamp
        input_transactions {
          hex_data
        }
      }
      lastBlock{
        id
        block_num
      }
    }

Check blocks in cache:

1. docker exec -it mongo /bin/bash
2. mongo
3. use blocks
4. db.blocks.find()