99 lines
1.9 KiB
JavaScript
99 lines
1.9 KiB
JavaScript
/*!
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* rpcclient.js - json rpc client for bcoin
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* Copyright (c) 2014-2017, Christopher Jeffrey (MIT License).
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* https://github.com/bcoin-org/bcoin
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*/
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'use strict';
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var Network = require('../protocol/network');
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var request = require('./request');
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var util = require('../utils/util');
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var co = require('../utils/co');
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/**
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* Bcoin RPC client.
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* @alias module:http.RPCClient
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* @constructor
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* @param {String} uri
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* @param {Object?} options
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*/
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function RPCClient(options) {
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if (!(this instanceof RPCClient))
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return new RPCClient(options);
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if (!options)
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options = {};
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if (typeof options === 'string')
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options = { uri: options };
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this.options = options;
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this.network = Network.get(options.network);
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this.uri = options.uri || 'http://localhost:' + this.network.rpcPort;
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this.apiKey = options.apiKey;
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this.id = 0;
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}
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/**
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* Make a json rpc request.
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* @private
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* @param {String} method - RPC method name.
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* @param {Array} params - RPC parameters.
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* @returns {Promise} - Returns Object?.
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*/
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RPCClient.prototype.execute = co(function* execute(method, params) {
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var res = yield request({
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method: 'POST',
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uri: this.uri,
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pool: true,
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json: {
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method: method,
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params: params,
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id: this.id++
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},
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auth: {
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username: 'bitcoinrpc',
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password: this.apiKey || ''
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},
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expect: 'json'
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});
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if (!res.body)
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throw new Error('No body for JSON-RPC response.');
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if (res.body.error)
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throw new RPCError(res.body.error.message, res.body.error.code);
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if (res.statusCode !== 200)
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throw new Error('Status code: ' + res.statusCode);
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return res.body.result;
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});
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/*
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* Helpers
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*/
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function RPCError(msg, code) {
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Error.call(this);
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if (Error.captureStackTrace)
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Error.captureStackTrace(this, RPCError);
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this.type = 'RPCError';
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this.message = msg + '';
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this.code = code >>> 0;
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}
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util.inherits(RPCError, Error);
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/*
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* Expose
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*/
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module.exports = RPCClient;
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