skywalking-apache/lib/index.js

The NodeJS agent for Apache SkyWalking

"use strict";
/*!
 *
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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 });
var tslib_1 = require("tslib");
var AgentConfig_1 = tslib_1.__importDefault(require("./config/AgentConfig"));
var GrpcProtocol_1 = tslib_1.__importDefault(require("./agent/protocol/grpc/GrpcProtocol"));
var logging_1 = require("./logging");
var PluginInstaller_1 = tslib_1.__importDefault(require("./core/PluginInstaller"));
var logger = logging_1.createLogger(__filename);
var Agent = /** @class */ (function () {
    function Agent() {
        this.started = false;
        this.protocol = new GrpcProtocol_1.default();
    }
    Agent.prototype.start = function (options) {
        if (options === void 0) { options = {}; }
        if (process.env.SW_DISABLE === 'true') {
            logger.info('SkyWalking agent is disabled by `SW_DISABLE=true`');
            return;
        }
        Object.assign(AgentConfig_1.default, options);
        if (this.started) {
            throw new Error('SkyWalking agent is already started and can only be started once.');
        }
        logger.debug('Starting SkyWalking agent');
        this.started = true;
        PluginInstaller_1.default.install();
        this.protocol.heartbeat();
        this.protocol.report();
    };
    return Agent;
}());
exports.default = new Agent();
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