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@ -4,7 +4,7 @@ |
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*/ |
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'use strict' |
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const rpc = require('bitcoind-rpc-client') |
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const {RPCClient} = require('rpc-bitcoin'); |
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const network = require('../bitcoin/network') |
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const keys = require('../../keys')[network.key] |
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const util = require('../util') |
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@ -14,77 +14,51 @@ const Logger = require('../logger') |
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/** |
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* Wrapper for bitcoind rpc client |
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*/ |
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class RpcClient { |
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/** |
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* Constructor |
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*/ |
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constructor() { |
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// Initiliaze the rpc client
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this.client = new rpc({ |
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host: keys.bitcoind.rpc.host, |
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port: keys.bitcoind.rpc.port |
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const createRpcClient = () => { |
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return new RPCClient({ |
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url: `http://${keys.bitcoind.rpc.host}`, |
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port: keys.bitcoind.rpc.port, |
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user: keys.bitcoind.rpc.user, |
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pass: keys.bitcoind.rpc.pass |
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}) |
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} |
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this.client.set('user', keys.bitcoind.rpc.user) |
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this.client.set('pass', keys.bitcoind.rpc.pass) |
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// Initialize a proxy postprocessing api calls
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return new Proxy(this, { |
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get: function(target, name, receiver) { |
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const origMethod = target.client[name] |
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return async function(...args) { |
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const result = await origMethod.apply(target.client, args) |
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if (Array.isArray(result)) { |
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return result |
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} else if (result.result) { |
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return result.result |
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} else if (result.error) { |
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throw result.error |
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} else { |
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throw 'A problem was met with a request sent to bitcoind RPC API' |
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} |
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} |
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} |
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}) |
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} |
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/** |
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* Check if an error returned by bitcoin-rpc-client |
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* is a connection error. |
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* @param {string} err - error message |
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* @returns {boolean} returns true if message related to a connection error |
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*/ |
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static isConnectionError(err) { |
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/** |
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* Check if an error returned by bitcoin-rpc-client |
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* is a connection error. |
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* @param {string} err - error message |
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* @returns {boolean} returns true if message related to a connection error |
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*/ |
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const isConnectionError = (err) => { |
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if (typeof err != 'string') |
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return false |
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return false |
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const isTimeoutError = (err.indexOf('connect ETIMEDOUT') != -1) |
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const isConnRejected = (err.indexOf('Connection Rejected') != -1) |
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const isTimeoutError = (err.indexOf('connect ETIMEDOUT') !== -1) |
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const isConnRejected = (err.indexOf('Connection Rejected') !== -1) |
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return (isTimeoutError || isConnRejected) |
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} |
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} |
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/** |
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* Check if the rpc api is ready to process requests |
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* @returns {Promise} |
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*/ |
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static async waitForBitcoindRpcApi() { |
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let client = new RpcClient() |
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/** |
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* Check if the rpc api is ready to process requests |
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* @returns {Promise} |
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*/ |
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const waitForBitcoindRpcApi = async () => { |
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let client = createRpcClient() |
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try { |
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await client.getblockchaininfo() |
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} catch(e) { |
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client = null |
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Logger.info('Bitcoind RPC : API is still unreachable. New attempt in 20s.') |
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return util.delay(20000).then(() => { |
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return RpcClient.waitForBitcoindRpcApi() |
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}) |
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await client.getblockchaininfo() |
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} catch (e) { |
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client = null |
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Logger.info('Bitcoind RPC : API is still unreachable. New attempt in 20s.') |
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return util.delay(20000).then(() => { |
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return waitForBitcoindRpcApi() |
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}) |
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} |
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} |
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} |
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module.exports = RpcClient |
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module.exports = { |
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createRpcClient, |
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isConnectionError, |
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waitForBitcoindRpcApi |
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} |
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Pavel Ševčík
4 years ago