@azure/monitor-opentelemetry/dist/commonjs/shared/jsonConfig.js

Azure Monitor OpenTelemetry (Node.js)

"use strict";
// Copyright (c) Microsoft Corporation.
// Licensed under the MIT License.
Object.defineProperty(exports, "__esModule", { value: true });
exports.JsonConfig = void 0;
const tslib_1 = require("tslib");
/* eslint-disable no-underscore-dangle*/
const fs = tslib_1.__importStar(require("node:fs"));
const path = tslib_1.__importStar(require("node:path"));
const index_js_1 = require("./logging/index.js");
const module_js_1 = require("./module.js");
const ENV_CONFIGURATION_FILE = "APPLICATIONINSIGHTS_CONFIGURATION_FILE";
const ENV_CONTENT = "APPLICATIONINSIGHTS_CONFIGURATION_CONTENT";
/**
 * Azure Monitor OpenTelemetry Client Configuration through JSON File
 * @internal
 */
class JsonConfig {
    /** Get Singleton instance */
    static getInstance() {
        if (!JsonConfig._instance) {
            JsonConfig._instance = new JsonConfig();
        }
        return JsonConfig._instance;
    }
    /**
     * Initializes a new instance of the JsonConfig class.
     */
    constructor() {
        let jsonString = "";
        this._tempDir = "";
        const contentJsonConfig = process.env[ENV_CONTENT];
        // JSON string added directly in env variable
        if (contentJsonConfig) {
            jsonString = contentJsonConfig;
        }
        // JSON file
        else {
            const configFileName = "applicationinsights.json";
            const rootPath = path.join((0, module_js_1.dirName)(), "../../../"); // Root of folder (__dirname = ../dist-esm/src)
            this._tempDir = path.join(rootPath, configFileName); // default
            const configFile = process.env[ENV_CONFIGURATION_FILE];
            if (configFile) {
                if (path.isAbsolute(configFile)) {
                    this._tempDir = configFile;
                }
                else {
                    this._tempDir = path.join(rootPath, configFile); // Relative path to applicationinsights folder
                }
            }
            try {
                jsonString = fs.readFileSync(this._tempDir, "utf8");
            }
            catch (err) {
                index_js_1.Logger.getInstance().info("Failed to read JSON config file: ", err);
            }
        }
        try {
            const jsonConfig = JSON.parse(jsonString);
            this.azureMonitorExporterOptions = jsonConfig.azureMonitorExporterOptions;
            this.samplingRatio = jsonConfig.samplingRatio;
            this.instrumentationOptions = jsonConfig.instrumentationOptions;
            this.browserSdkLoaderOptions = jsonConfig.browserSdkLoaderOptions;
            this.enableLiveMetrics = jsonConfig.enableLiveMetrics;
            this.enableStandardMetrics = jsonConfig.enableStandardMetrics;
            this.enableTraceBasedSamplingForLogs = jsonConfig.enableTraceBasedSamplingForLogs;
        }
        catch (err) {
            index_js_1.Logger.getInstance().info("Missing or invalid JSON config file: ", err);
        }
    }
}
exports.JsonConfig = JsonConfig;
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