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Edit File: tracer.js

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.Tracing = void 0;
const core = require("@opencensus/core");
const default_config_1 = require("./config/default-config");
const constants_1 = require("./constants");
const plugin_loader_1 = require("./instrumentation/plugin-loader");
class Tracing {
    constructor() {
        this.configLocal = {};
        this.tracer = new core.CoreTracer();
        this.defaultPlugins = plugin_loader_1.PluginLoader.defaultPluginsFromArray(constants_1.Constants.DEFAULT_INSTRUMENTATION_MODULES);
    }
    static get instance() {
        return this.singletonInstance || (this.singletonInstance = new this());
    }
    get active() {
        return this.activeLocal;
    }
    get config() {
        return this.configLocal;
    }
    start(userConfig) {
        this.configLocal = Object.assign(default_config_1.defaultConfig, { plugins: this.defaultPlugins }, userConfig);
        this.logger =
            this.configLocal.logger || core.logger.logger(this.configLocal.logLevel);
        this.configLocal.logger = this.logger;
        this.logger.debug('config: %o', this.configLocal);
        this.pluginLoader = new plugin_loader_1.PluginLoader(this.logger, this.tracer);
        this.pluginLoader.loadPlugins(this.configLocal.plugins);
        if (!this.configLocal.exporter) {
            const exporter = new core.ConsoleExporter(this.configLocal);
            this.registerExporter(exporter);
        }
        else {
            this.registerExporter(this.configLocal.exporter);
        }
        this.activeLocal = true;
        this.tracer.start(this.configLocal);
        return this;
    }
    stop() {
        this.activeLocal = false;
        this.tracer.stop();
        this.pluginLoader.unloadPlugins();
        this.configLocal = {};
    }
    get exporter() {
        return this.configLocal.exporter;
    }
    registerExporter(exporter) {
        if (this.configLocal.exporter) {
            this.unregisterExporter(this.configLocal.exporter);
        }
        if (exporter) {
            this.configLocal.exporter = exporter;
            this.tracer.registerSpanEventListener(exporter);
        }
        return this;
    }
    unregisterExporter(exporter) {
        this.tracer.unregisterSpanEventListener(exporter);
        this.configLocal.exporter = undefined;
        return this;
    }
}
exports.Tracing = Tracing;
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