Function decodeGenesisData

Function to decode genesis data used to launch a new blockchain. The different values are deserialized using protobuffers. One of the arguments is the dictionary which contains the relevant information for the deserialization. By default the function contains the dictionary for the following keys:

• "object_key::head_block"
• "object_key::chain_id"
• "object_key::genesis_key"
• "object_key::resource_limit_data"
• "object_key::max_account_resources"
• "object_key::protocol_descriptor"
• "object_key::compute_bandwidth_registry"
• "object_key::block_hash_code"

Example

const genesisData = {
  entries: [
    {
      space: { system: true },
      key: "EiC3nO+XbeKg4C8ugW7M7XdfmJKY4i3l91KoJWxosQPImA==",
      value: "AMpASH7CjUHBpl2QR8E5lGKVjVLAvJRg5g==",
    },
  ],
}

const genesisDataDecoded = await decodeGenesisData(genesisData);
console.log(genesisDataDecoded);

// {
//   entries: [
//     {
//       space: { system: true },
//       key: "EiC3nO+XbeKg4C8ugW7M7XdfmJKY4i3l91KoJWxosQPImA==",
//       alias: "object_key::genesis_key",
//       value: "1KSQWDyUnFZ48Pf2hsW8Akh1b5fKUWc8Z3",
//     },
//   ],
// };

Example

adding a custom dictionary

const genesisData = {
  entries: [
    {
      key: "difficulty_metadata_key",
      space: {
        id: 1,
        system: true,
        zone: "AMpASH7CjUHBpl2QR8E5lGKVjVLAvJRg5g==",
      },
      value:
        "CiD//////////////////////////////////////////xCAlIus4S8aIBERERERERERERERERERERERERERERERERERERERERERIAo=",
    },
  ],
};

const powJson = {
  nested: {
    mypackage: {
      nested: {
        difficulty_metadata: {
          "fields": {
            "target": { "type": "bytes", "id": 1 },
            "last_block_time": { "type": "uint64", "id": 2,
              "options": { "jstype": "JS_STRING" }
            },
            "difficulty": { "type": "bytes", "id": 3 },
            "target_block_interval": { "type": "uint64", "id": 4,
               "options": { "jstype": "JS_STRING" }
            }
          }
        },
      }
    }
  }
}

const dic = {
  difficulty_metadata_key: {
    serializer: new Serializer(powJson),
    typeName: "difficulty_metadata",
  },
};

const genesisDataDecoded = await decodeGenesisData(genesisData, dic);
console.log(genesisData);

// {
//   entries: [
//     {
//       space: { system: true, zone, id: 1 },
//       key: "difficulty_metadata_key",
//       value: {
//         target: "__________________________________________8=",
//         last_block_time: "1641038400000",
//         difficulty: "ERERERERERERERERERERERERERERERERERERERERERE=",
//         target_block_interval: "10",
//       },
//     },
//   ],
// };