@opentelemetry/instrumentation-runtime-node
Version:
OpenTelemetry instrumentation for Node.js Performance measurement API
46 lines • 1.94 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.EventLoopUtilizationCollector = exports.ATTR_NODEJS_EVENT_LOOP_UTILIZATION = void 0;
/*
* Copyright The OpenTelemetry 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
*
* https://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.
*/
const node_perf_hooks_1 = require("node:perf_hooks");
const baseCollector_1 = require("./baseCollector");
const { eventLoopUtilization: eventLoopUtilizationCollector } = node_perf_hooks_1.performance;
exports.ATTR_NODEJS_EVENT_LOOP_UTILIZATION = 'eventloop.utilization';
class EventLoopUtilizationCollector extends baseCollector_1.BaseCollector {
_lastValue;
constructor(config = {}, namePrefix) {
super(config, namePrefix);
}
updateMetricInstruments(meter) {
meter
.createObservableGauge(`${this.namePrefix}.${exports.ATTR_NODEJS_EVENT_LOOP_UTILIZATION}`, {
description: 'Event loop utilization',
unit: '1',
})
.addCallback(async (observableResult) => {
if (!this._config.enabled)
return;
const elu = eventLoopUtilizationCollector(this._lastValue);
observableResult.observe(elu.utilization);
this._lastValue = elu;
});
}
internalDisable() { }
internalEnable() { }
}
exports.EventLoopUtilizationCollector = EventLoopUtilizationCollector;
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