mirror of https://github.com/status-im/web3.js.git
comments in requestmanager
This commit is contained in:
Marek Kotewicz
parent
5c1e85f295
commit
d408fb0867
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@ -34,93 +34,132 @@ var InvalidResponse = new Error('jsonrpc response is not valid');
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* It's also responsible for polling the ethereum node for incoming messages
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* Default poll timeout is 1 second
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*/
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var requestManager = function() {
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var polls = [];
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var timeout = null;
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var provider;
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var RequestManager = function() {
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this.polls = [];
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this.timeout = null;
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this.provider;
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this.poll();
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};
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var send = function (data, callback) {
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/**
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* Should be used to synchronously send request
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*
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* @method send
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* @param {Object|Array} data
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* @return {Object}
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*/
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RequestManager.prototype.send = function (data) {
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var payload = utils.isArray(data) ? jsonrpc.toBatchPayload(data) : jsonrpc.toPayload(data.method, data.params);
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var result = this.provider.send(payload);
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var payload = utils.isArray(data) ? jsonrpc.toBatchPayload(data) : jsonrpc.toPayload(data.method, data.params);
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var result = provider.send(payload);
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if (!jsonrpc.isValidResponse(result)) {
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throw InvalidResponse;
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}
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return result.result;
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};
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/**
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* Should be used to asynchronously send request
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*
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* @method sendAsync
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* @param {Object|Array} data
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* @param {Function} callback
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*/
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RequestManager.prototype.sendAsync = function (data, callback) {
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var payload = utils.isArray(data) ? jsonrpc.toBatchPayload(data) : jsonrpc.toPayload(data.method, data.params);
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this.provider.sendAsync(payload, function (err, result) {
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if (err) {
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return callback(err);
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}
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if (!jsonrpc.isValidResponse(result)) {
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throw InvalidResponse;
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return callback(InvalidResponse);
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}
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return result.result;
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};
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callback(null, result.result);
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});
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};
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var sendAsync = function (data, callback) {
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var payload = utils.isArray(data) ? jsonrpc.toBatchPayload(data) : jsonrpc.toPayload(data.method, data.params);
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provider.sendAsync(payload, function (err, result) {
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if (err) {
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return callback(err);
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}
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if (!jsonrpc.isValidResponse(result)) {
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return callback(InvalidResponse);
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}
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/**
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* Should be used to set provider of request manager
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*
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* @method setProvider
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* @param {Object}
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*/
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RequestManager.prototype.setProvider = function (p) {
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this.provider = p;
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};
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callback(null, result.result);
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});
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};
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/*jshint maxparams:4 */
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var setProvider = function (p) {
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provider = p;
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};
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/**
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* Should be used to start polling
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*
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* @method startPolling
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* @param data
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* @param pollId
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* @param callback
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* @param uninstall
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*
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* @todo cleanup number of params
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*/
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RequestManager.prototype.startPolling = function (data, pollId, callback, uninstall) {
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this.polls.push({data: data, id: pollId, callback: callback, uninstall: uninstall});
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};
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/*jshint maxparams:3 */
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/*jshint maxparams:4 */
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var startPolling = function (data, pollId, callback, uninstall) {
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polls.push({data: data, id: pollId, callback: callback, uninstall: uninstall});
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};
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/*jshint maxparams:3 */
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var stopPolling = function (pollId) {
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for (var i = polls.length; i--;) {
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var poll = polls[i];
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if (poll.id === pollId) {
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polls.splice(i, 1);
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}
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/**
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* Should be used to stop polling for filter with given id
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*
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* @method stopPolling
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* @param pollId
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*/
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RequestManager.prototype.stopPolling = function (pollId) {
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for (var i = this.polls.length; i--;) {
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var poll = this.polls[i];
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if (poll.id === pollId) {
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this.polls.splice(i, 1);
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}
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};
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}
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};
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var reset = function () {
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polls.forEach(function (poll) {
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poll.uninstall(poll.id);
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/**
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* Should be called to reset polling mechanism of request manager
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*
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* @method reset
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*/
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RequestManager.prototype.reset = function () {
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this.polls.forEach(function (poll) {
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poll.uninstall(poll.id);
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});
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this.polls = [];
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if (timeout) {
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clearTimeout(timeout);
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timeout = null;
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}
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this.poll();
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};
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/**
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* Should be called to poll for changes on filter with given id
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*
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* @method poll
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*/
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RequestManager.prototype.poll = function () {
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this.polls.forEach(function (data) {
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// send async
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sendAsync(data.data, function(error, result){
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if (error || !(isArray(result)) || result.length === 0) {
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return;
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}
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data.callback(result);
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});
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polls = [];
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if (timeout) {
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clearTimeout(timeout);
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timeout = null;
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}
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poll();
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};
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var poll = function () {
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polls.forEach(function (data) {
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// send async
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sendAsync(data.data, function(error, result){
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if (error || !(isArray(result)) || result.length === 0) {
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return;
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}
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data.callback(result);
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});
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});
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timeout = setTimeout(poll, c.ETH_POLLING_TIMEOUT);
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};
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poll();
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return {
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send: send,
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setProvider: setProvider,
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startPolling: startPolling,
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stopPolling: stopPolling,
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reset: reset
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};
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});
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timeout = setTimeout(poll, c.ETH_POLLING_TIMEOUT);
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};
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module.exports = requestManager;
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