karmachain

karmachain

Package for work with Karma blockchain

Setup

This library can be obtained through npm:

# npm install karmachain

Usage

karmachain package contain class Karma:

const Karma = require("karmachain")

Kamra contains static methods for work with public API, and dynamic methods for work with wallet API.

Initialization

Example initialization:

Karma.init('wss://node.karma.red')

After initialization, you can connect:

Karma.connect()

Karma.connect() return Promise, resolve it when connection consists.

You may to subscribe to connection event:

Karma.subscribe('connected',functionToCall)

Public API

After connection, you may call public api methods. For example Karma.db return wrapper for database API:

Karma.db.get_objects(["1.3.0"])
Kamra.db.list_assets("krm",100)

Karma.history is wrapper for history API:

Karma.history.get_account_history("<account_id>", "1.11.0", 10, "1.11.0")

Private API

If you want access to private API, you need create object from Karma class:

let account = new Karma("accountName","privateActiveKey")

or

let account = Karma.login("accountName","password")

account have transfer method:

await account.transfer(toName, assetSymbol, amount, memo)

Some examples:

const Karma = require('karmachain')
KEY = 'privateActiveKey'

Karma.init('wss://node.karma.red')
Karma.subscribe('connected', startAfterConnected)

async function startAfterConnected() {
  let bot = new Karma('test-acc',KEY)

  let iam = await Karma.accounts['test-acc'];
  let info = await Karma.db.get_full_accounts([iam.id],false);
  
  console.log(info)
}

Karma in REPL

If you install karmachan-package in global storage, you may start karma exec script:

$ karma
>|

This command try autoconnect to mainnet karmachain. If you want to connect on testnet, try this:

$ karma --testnet
>|

It is nodejs REPL with several variables:

• karma, main class karmachain package
• login, function to create object of class Karma
• generateKeys, to generateKeys from login and password
• accounts, is analog Karma.accounts
• assets, is analog Karma.assets
• db, is analog Karma.db
• history, is analog Karma.hostory
• network, is analog Karma.network
• fees, is analog Karma.fees

For example

$ karma
> assets["krm"].then(console.log)

Shot request

If need call only one request, you may use --account, --asset, --block, --object, --history, --balance or --transfer keys in command-line:

$ karma --account <'name' or 'id' or 'last number in id'>
{
  "id": "1.2.5992",
  "membership_expiration_date": "1970-01-01T00:00:00",
  "registrar": "1.2.37",
  "referrer": "1.2.21",
  ...
}

$ karma --asset <'symbol' or 'id' or 'last number in id'>
{
  "id": "1.3.0",
  "symbol": "KRM",
  "precision": 5,
  ...
}

$ karma --block [<number>]
block_num: 4636380
{
  "previous": "0046bedba1317d146dd6afbccff94412d76bf094",
  "timestamp": "2018-10-01T13:09:40",
  "witness": "1.6.41",
  ...
}

$ karma --object 1.2.3
{
  "id": "1.2.3",
  "membership_expiration_date": "1969-12-31T23:59:59",
  "registrar": "1.2.3",
  "referrer": "1.2.3",
  ...
}

$ karma --history <account> [<limit>] [<start>] [<stop>]
[
  {
    "id": "1.11.98179",
    "op": [
      0,
  ...
}]

$ karma --balance <account or accounts> [<asset or assets>]
account
KRM: 1234.567

$ karma --transfer <from> <to> <amount> <asset> [--key]
Transfered <amount> <asset> from '<from>' to '<to>' with memo '<memo>'

Contributing

Bug reports and pull requests are welcome on GitHub.

License

The package is available as open source under the terms of the MIT License.