resume-client-socket.io/test/app/node_modules/@pm2/io/build/main/census/instrumentation/plugin-loader.js

Resume Client API for Socket.IO and Node.JS - Medical Speech to Summarized Text

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
const fs = require("fs");
const path = require("path");
const hook = require("require-in-the-middle");
const constants_1 = require("../constants");
var HookState;
(function (HookState) {
    HookState[HookState["UNINITIALIZED"] = 0] = "UNINITIALIZED";
    HookState[HookState["ENABLED"] = 1] = "ENABLED";
    HookState[HookState["DISABLED"] = 2] = "DISABLED";
})(HookState || (HookState = {}));
class PluginLoader {
    constructor(logger, tracer) {
        this.plugins = [];
        this.hookState = HookState.UNINITIALIZED;
        this.tracer = tracer;
        this.logger = logger;
    }
    static defaultPackageName(moduleName) {
        return `${constants_1.Constants.OPENCENSUS_SCOPE}/${constants_1.Constants.DEFAULT_PLUGIN_PACKAGE_NAME_PREFIX}-${moduleName}`;
    }
    static defaultPluginsFromArray(modulesToPatch) {
        const plugins = modulesToPatch.reduce((plugins, moduleName) => {
            plugins[moduleName] = PluginLoader.defaultPackageName(moduleName);
            return plugins;
        }, {});
        return plugins;
    }
    getPackageVersion(name, basedir) {
        let version = '';
        if (basedir) {
            const pkgJson = path.join(basedir, 'package.json');
            try {
                version = JSON.parse(fs.readFileSync(pkgJson).toString()).version;
            }
            catch (e) {
                this.logger.error('could not get version of %s module: %s', name, e.message);
            }
        }
        else {
            version = process.versions.node;
        }
        return version;
    }
    loadPlugins(pluginList) {
        if (this.hookState === HookState.UNINITIALIZED) {
            hook(Object.keys(pluginList), (exports, name, basedir) => {
                if (this.hookState !== HookState.ENABLED) {
                    return exports;
                }
                const plugin = pluginList[name];
                const version = this.getPackageVersion(name, basedir);
                this.logger.info('trying loading %s.%s', name, version);
                if (!version) {
                    return exports;
                }
                this.logger.debug('applying patch to %s@%s module', name, version);
                let moduleName;
                let moduleConfig = {};
                if (typeof plugin === 'string') {
                    moduleName = plugin;
                }
                else {
                    moduleConfig = plugin.config;
                    moduleName = plugin.module;
                }
                this.logger.debug('using package %s to patch %s', moduleName, name);
                try {
                    const plugin = require(moduleName).plugin;
                    this.plugins.push(plugin);
                    return plugin.enable(exports, this.tracer, version, moduleConfig, basedir);
                }
                catch (e) {
                    this.logger.error('could not load plugin %s of module %s. Error: %s', moduleName, name, e.message);
                    return exports;
                }
            });
        }
        this.hookState = HookState.ENABLED;
    }
    unloadPlugins() {
        for (const plugin of this.plugins) {
            plugin.disable();
        }
        this.plugins = [];
        this.hookState = HookState.DISABLED;
    }
    static set searchPathForTest(searchPath) {
        module.paths.push(searchPath);
    }
}
exports.PluginLoader = PluginLoader;
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