Harmony API Wrapper

Quick Links

what	where
documentation	todo
api-doc	todo
npm package	todo
source	https://github.com/ifitzsimmons/harmony-api.git
Harmony API	Todo
changelog	HISTORY.md
contributing	CONTRIBUTING.md

Bugs / Feature Requests

Think you’ve found a bug? Want to see a new feature in harmony-api? Please open a case in the github repo.

For now, this repository has one owner and contributor, so issues may take some time to resolve.

Installation

The recommended way to get started using the Node.js 4.x driver is by using the npm (Node Package Manager) to install the dependency in your project.

After you've created your own project using npm init, you can run:

npm install harmony-api
# or ...
yarn add harmony-api

If you are a Typescript user, you will need the Node.js type definitions to use the package's definitions:

npm install -D @types/node

Quick Start

After installing the package, you can add the following code to your file to use the Harmony API wrapper:

import { HarmonyApi } from 'harmony-api';

const harmonyApi = new HarmonyApi();

const walletBalance = harmonyApi.getBalance('one12ptaf8lus7f63ar6ce5llhaccgmypadcxmyvnf')

Get Wallet Balance

getWalletBalance(walletAddress: string)

The raw get balance request returns the balance in ATTO. The wrapper returns the balance in ONE ($ 1e18 $ ATTO = $ 1 $ ONE)

Request

• walletAddress - Harmony wallet address

Response

Harmony One wallet balance in units of ONE (not Atto).

Sample Usage

const walletBalance = await harmonyApi.getBalance('one12ptaf8lus7f63ar6ce5llhaccgmypadcxmyvnf')

console.log(walletBalance);

/** logs
 * 54321
 */

Get Wallet Transaction History

getTransactionHistory(walletAddress: string, pageSize=100, pageNumber=0)

Returns (paginated) transactions for the wallet.

Request

• walletAddress - Harmony wallet address.
• pageSize - Number of transactions to return, default is 100.
• pageNumber - Used for pagination. If the response has paginated transactions, increase the page number by 1. NOTE: Do not change the page size between requests. Working on a solution for making page size readonly).

Response

• transactions {HarmonyTransaction[]} List Transformed Harmony Transactions.
• pagination {bool} Indicates whether there are more transactions on the next page.

Sample Usage

const transactionHistory = await harmonyApi
  .getTransactionHistory(
    'one12ptaf8lus7f63ar6ce5llhaccgmypadcxmyvnf'
    2
  )

console.log(transactionHistory);

/** logs
 * {
 *   transactions: [
       {
         ethHash: '0x69a097a66e1e6b93935e99dff2bf50566b4abc137a3c8fba08da33e2103a7399',
         from: 'one12ptwf8lus7f63ar6ce5llhaccgmypadcxmyvnf',
         gas: 79833,
         gasPrice: 10000000000,
         hash: '0xcaa2536290b78bb5edca15d8db06cc29c323532f78e1da1b2a5833e0bbf64258',
         input: '0xa59f3e0c000000000000000000000000000000000000000000000000058600624b30d939',
         nonce: 57,
         shardID: 0,
         timestamp: 1636648986,
         to: 'one1488gx5rasuk9uynnuaz6hn76sjw65e206pmljg',
         toShardID: 0,
         value: 0,
       },
       {
         ethHash: '0xaea05f434a56c8c02e49a01ed445794a9a92d949d33d5984bcd975c5d64371cb',
         from: 'one1e5g4tvr576883myesdnmf4aek3fvt6gj6qesuu',
         gas: 50000,
         gasPrice: 50000000000,
         hash: '0xf1fa553b2993837fc1441d91a01a250e73b762906ec08744535a581034f1137e',
         input: '0x',
         nonce: 67902,
         shardID: 0,
         timestamp: 1635296314,
         to: 'one12ptwf8lus7f63ar6ce5llhaccgmypadcxmyvnf',
         toShardID: 0,
         value: 59999000000000000000,
       },
     ],
     pagination: true
 * }
 */

Get Transaction Receipt

getRawransactionReceipt(transactionHash: string)

Returns raw data for a particular transaction.

Request

• transactionHash - Harmony transaction hash.

Response

• transactions {HarmonyTransactionReceipt} Transformed transaction details.

Sample Usage

const transactionReceipt = await harmonyApi
  .getTransactionReceipt(
    '0xcaa2536290b78bb5edca15d8db06cc29c323532f78e1da1b2a5833e0bbf64258'
  )

console.log(transactionReceipt);

/** logs
  {
    blockHash: '0x36039df946b0abfaa8b49f9c7b4a60f82a76958f22a00ae6aad5fa5d47f6d922',
    blockNumber: 19327155,
    contractAddress: '0x0000000000000000000000000000000000000000',
    cumulativeGasUsed: 3921936,
    from: 'one12ptwf8lus7f63ar6ce5llhaccgmypadcxmyvnf',
    gasUsed: 57192,
    logs: [
      {
        address: '0xa9ce83507d872c5e1273e745abcfda849daa654f',
        blockHash: '0x36039df946b0abfaa8b49f9c7b4a60f82a76958f22a00ae6aad5fa5d47f6d922',
        blockNumber: '0x126e8b3',
        data: '0x0000000000000000000000000000000000000000000000000383d396ee782c8f',
        logIndex: '0x43',
        removed: false,
        topics: [
          '0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef',
          '0x0000000000000000000000000000000000000000000000000000000000000000',
          '0x0000000000000000000000005056e49ffc8793a8f47ac669ffdfb8c23640f5b8',
        ],
        transactionHash:
          '0xcaa2536290b78bb5edca15d8db06cc29c323532f78e1da1b2a5833e0bbf64258',
        transactionIndex: '0xf',
      },
    ],
    logsBloom:
      '0x00000000000000000000010000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000200000000000000004000000000008000000000000010000000000000000000000000000000000820000000000010000100800000000000000000000000010000000000000000000000000008000000000000000000000000000000000000000000000020000000000000000000000000000000000000000000000000000000000000000000102000000008000000000000000000000000000000000080000000020000018000000000000000000000400000000000000000000000000000000000000',
    root: '0x',
    shardID: 0,
    status: 1,
    to: 'one1488gx5rasuk9uynnuaz6hn76sjw65e206pmljg',
    transactionHash: '0xcaa2536290b78bb5edca15d8db06cc29c323532f78e1da1b2a5833e0bbf64258',
    transactionIndex: 15,
  };
 */

Get Transaction Receipts

getRawTransactionReceipt(transactionHashes: string[])

Returns raw data for a particular transaction.

Request

• transactionHashes - Harmony transaction hashes.

Response

• transactions {HarmonyTransactionReceipt[]} Transformed transaction details.

Sample Usage

const transactionReceipts = await harmonyApi
  .getRawTransactionReceipts([
    '0xcaa2536290b78bb5edca15d8db06cc29c323532f78e1da1b2a5833e0bbf64258',
    '0x42e969171251e57598f5902eac0413991c8a821a98c70babe074ae801fdeb38f'
  ])

console.log(transactionReceipts);

/** logs
  [
    {
      blockHash: '0x36039df946b0abfaa8b49f9c7b4a60f82a76958f22a00ae6aad5fa5d47f6d922',
      blockNumber: 19327155,
      contractAddress: '0x0000000000000000000000000000000000000000',
      cumulativeGasUsed: 3921936,
      from: 'one12ptwf8lus7f63ar6ce5llhaccgmypadcxmyvnf',
      gasUsed: 57192,
      logs: [
        {
          address: '0xa9ce83507d872c5e1273e745abcfda849daa654f',
          blockHash: '0x36039df946b0abfaa8b49f9c7b4a60f82a76958f22a00ae6aad5fa5d47f6d922',
          blockNumber: '0x126e8b3',
          data: '0x0000000000000000000000000000000000000000000000000383d396ee782c8f',
          logIndex: '0x43',
          removed: false,
          topics: [
            '0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef',
            '0x0000000000000000000000000000000000000000000000000000000000000000',
            '0x0000000000000000000000005056e49ffc8793a8f47ac669ffdfb8c23640f5b8',
          ],
          transactionHash:
            '0xcaa2536290b78bb5edca15d8db06cc29c323532f78e1da1b2a5833e0bbf64258',
          transactionIndex: '0xf',
        },
      ],
      logsBloom:
        '0x00000000000000000000010000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000200000000000000004000000000008000000000000010000000000000000000000000000000000820000000000010000100800000000000000000000000010000000000000000000000000008000000000000000000000000000000000000000000000020000000000000000000000000000000000000000000000000000000000000000000102000000008000000000000000000000000000000000080000000020000018000000000000000000000400000000000000000000000000000000000000',
      root: '0x',
      shardID: 0,
      status: 1,
      to: 'one1488gx5rasuk9uynnuaz6hn76sjw65e206pmljg',
      transactionHash: '0xcaa2536290b78bb5edca15d8db06cc29c323532f78e1da1b2a5833e0bbf64258',
      transactionIndex: 15,
    },
    {
      blockHash: '0x36039df946b0abfaa8b49f9c7b4a60f82a76958f22a00ae6aad5fa5d47f6d922',
      blockNumber: 19327155,
      contractAddress: '0x0000000000000000000000000000000000000000',
      cumulativeGasUsed: 3921936,
      from: 'one12ptwf8lus7f63ar6ce5llhaccgmypadcxmyvnf',
      gasUsed: 57192,
      logs: [],
      logsBloom:
        '0x00000000000000000000010000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000200000000000000004000000000008000000000000010000000000000000000000000000000000820000000000010000100800000000000000000000000010000000000000000000000000008000000000000000000000000000000000000000000000020000000000000000000000000000000000000000000000000000000000000000000102000000008000000000000000000000000000000000080000000020000018000000000000000000000400000000000000000000000000000000000000',
      root: '0x',
      shardID: 0,
      status: 1,
      to: 'one1488gx5rasuk9uynnuaz6hn76sjw65e206pmljg',
      transactionHash: '0xcaa2536290b78bb5edca15d8db06cc29c323532f78e1da1b2a5833e0bbf64258',
      transactionIndex: 15,
    }
 */

Get Wrapped Transaction Receipts

getWrappedTransactions(transactions: HarmonyTransactionReceipt[])

Wraps a list of transaction receipts and returns human readable data.

Request

• transactions {HarmonyTransactionReceipt[]} - A list of Raw transaction receipts

Response

• transactions {WrappedTransasctionReceipt[]} Transformed transaction details.

Sample Usage

const transactionReceipts = await harmonyApi
  .getRawTransactionReceipts([
    '0xcaa2536290b78bb5edca15d8db06cc29c323532f78e1da1b2a5833e0bbf64258',
    '0x42e969171251e57598f5902eac0413991c8a821a98c70babe074ae801fdeb38f'
  ]);

const wrappedReceipts = await harmonyApi.
  getWrappedTransactions(transactionReceipts);

console.log(wrappedReceipts);

/** logs
  [
    {
      contractAddress: '0x0000000000000000000000000000000000000000',
      cumulativeGasUsed: 3921936,
      from: 'one12ptwf8lus7f63ar6ce5llhaccgmypadcxmyvnf',
      gasUsed: 57192,
      status: 1,
      to: 'one1488gx5rasuk9uynnuaz6hn76sjw65e206pmljg',
      transactionHash: '0xcaa2536290b78bb5edca15d8db06cc29c323532f78e1da1b2a5833e0bbf64258',
      transactions: [
        {
          fromEthAddress: '0x0000000000000000000000000000000000000000000000000000000000000000',
          fromOneAddress: 'one1qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqquzw7vz',
          toEthAddress: '0x0000000000000000000000005056e49ffc8793a8f47ac669ffdfb8c23640f5b8',
          toOneAddress: 'one12ptwf8lus7f63ar6ce5llhaccgmypadcxmyvnf',
          tokenDecimal: 18,
          tokenName: 'xJewels',
          tokenSymbol: 'xJEWEL',
          tokenValue: 253278649262288000,
          transactionType: 'TRANSFER',
        },
        {
          fromEthAddress: '0x0000000000000000000000005056e49ffc8793a8f47ac669ffdfb8c23640f5b8',
          fromOneAddress: 'one12ptwf8lus7f63ar6ce5llhaccgmypadcxmyvnf',
          toEthAddress: '0x000000000000000000000000a9ce83507d872c5e1273e745abcfda849daa654f',
          toOneAddress: 'one1488gx5rasuk9uynnuaz6hn76sjw65e206pmljg',
          tokenDecimal: 0,
          tokenName: 'Jewels',
          tokenSymbol: 'JEWEL',
          tokenValue: 398006039237155140,
          transactionType: 'TRANSFER',
        },
        {
          ethAddress: '0x0000000000000000000000005056e49ffc8793a8f47ac669ffdfb8c23640f5b8',
          oneAddress: 'one12ptwf8lus7f63ar6ce5llhaccgmypadcxmyvnf',
          tokenDecimal: 0,
          tokenName: 'Jewels',
          tokenSymbol: 'JEWEL',
          tokenValue: 1.157920892373162e77,
          transactionType: 'APPROVAL',
        },
      ],
    }
    {
      contractAddress: '0x0000000000000000000000000000000000000000',
      cumulativeGasUsed: 712891,
      from: 'one12ptwf8lus7f63ar6ce5llhaccgmypadcxmyvnf',
      gasUsed: 109993,
      status: 1,
      to: 'one1yjkky5pdr3jje3mggzq3d8gy394vyresl69pgt',
      transactionHash: '0x42e969171251e57598f5902eac0413991c8a821a98c70babe074ae801fdeb38f',
      transactions: [
        {
          ethAddress: '0x00000000000000000000000024ad62502d1c652cc7684081169d04896ac20f30',
          oneAddress: 'one1yjkky5pdr3jje3mggzq3d8gy394vyresl69pgt',
          tokenDecimal: 0,
          tokenName: 'Wrapped ONE',
          tokenSymbol: 'WONE',
          tokenValue: 39000000000000000000,
          transactionType: 'DEPOSIT',
        },
        {
          tokenDecimal: 0,
          tokenName: 'Jewel LP Token',
          tokenSymbol: 'JEWEL-LP',
          tokenValue: 8.96875045756917e100,
          transactionType: 'SYNC',
        },
        {
          fromEthAddress:
            '0x00000000000000000000000024ad62502d1c652cc7684081169d04896ac20f30',
          fromOneAddress: 'one1yjkky5pdr3jje3mggzq3d8gy394vyresl69pgt',
          toEthAddress:
            '0x0000000000000000000000005056e49ffc8793a8f47ac669ffdfb8c23640f5b8',
          toOneAddress: 'one12ptwf8lus7f63ar6ce5llhaccgmypadcxmyvnf',
          tokenDecimal: 0,
          tokenName: 'Jewel LP Token',
          tokenSymbol: 'JEWEL-LP',
          tokenValue: 5.229045092677613e173,
          transactionType: 'SWAP',
        },
      ],
    }
  ]
*/

Error Handling

ToDo

To Do

1. Combine relevant fields from trnasaction history (transfer fee) and others with wrapped receipt
2. Reorganize pagination for transaction history
3. optimize token settings
4. More robust address utils/bech32 encoding. Find documentation for parsing data.
5. Fix husky
6. Add contributions file
7. Add pre-push script that will run tests
8. Add pipeline that will distribute package and test.
9. Build distribution package for ts and js
10. Auto API Doc creation (typedoc)
11. Figure out why I had to use babel and old versions of jest/ts-jest in order to run tests. This can be open sourced.
12. Force all response transform functions to be wrapped by error handler
13. Make page size readonly as to not mess with pagination, add a max.
14. Better named exports for response transformers
15. Enfore JSdocs are up-to-date with params
16. Transform transaction value from ATTO to ONE
    • transform from and to to fromOneAddress and toOneAddress and ensure they are ONE addresses
    • Make ethHash, nonce, shardId, and toShardId optional return values (add an arg)
17. Transform hex encoded numeric values in receipt
    • blockHash
    • blockNumber
    • transactionIndex
18. Implement optional logger
19. Cover missing test coverage
20. Add API docs
21. Add table of contents
22. Clean up type definitions in package