Current File : //lib/node_modules/pm2/node_modules/@opencensus/core/build/src/exporters/exporter-buffer.js
"use strict";
/**
* Copyright 2018, OpenCensus Authors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
Object.defineProperty(exports, "__esModule", { value: true });
const logger = require("../common/console-logger");
/** Controls the sending of traces to exporters. */
class ExporterBuffer {
/**
* Constructs a new Buffer instance.
* @param exporter The service to send the collected spans.
* @param config A buffer configuration object to create a buffer.
*/
constructor(exporter, config) {
/** Manage when the buffer timeout needs to be reseted */
this.resetTimeout = false;
/** Indicates when the buffer timeout is running */
this.bufferTimeoutInProgress = false;
/** Trace queue of a buffer */
this.queue = [];
this.exporter = exporter;
this.logger = config.logger || logger.logger();
this.bufferSize = config.bufferSize;
this.bufferTimeout = config.bufferTimeout;
return this;
}
/**
* Set the buffer size value.
* @param bufferSize The new buffer size.
*/
setBufferSize(bufferSize) {
this.bufferSize = bufferSize;
return this;
}
getBufferSize() {
return this.bufferSize;
}
getQueue() {
return this.queue;
}
/**
* Add a rootSpan in the buffer.
* @param root RootSpan to be added in the buffer.
*/
addToBuffer(root) {
this.queue.push(root);
this.logger.debug('ExporterBuffer: added new rootspan');
if (this.queue.length > this.bufferSize) {
this.flush();
}
if (this.bufferTimeoutInProgress) {
this.resetBufferTimeout();
}
else {
this.setBufferTimeout();
}
return this;
}
/** Reset the buffer timeout */
resetBufferTimeout() {
this.logger.debug('ExporterBuffer: reset timeout');
this.resetTimeout = true;
}
/** Start the buffer timeout, when finished calls flush method */
setBufferTimeout() {
this.logger.debug('ExporterBuffer: set timeout');
this.bufferTimeoutInProgress = true;
const timer = setTimeout(() => {
if (this.queue.length === 0) {
return;
}
if (this.resetTimeout) {
this.resetTimeout = false;
this.setBufferTimeout();
}
else {
this.bufferTimeoutInProgress = false;
this.flush();
}
}, this.bufferTimeout);
// Don't let this timer be the only thing keeping the process alive
timer.unref();
}
/** Send the trace queue to all exporters */
flush() {
this.exporter.publish(this.queue);
this.queue = [];
return this;
}
}
exports.ExporterBuffer = ExporterBuffer;
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