luster - npm Package Compare versions

Comparing version 1.0.0 to 1.1.0

before.log

lib/configuration/check.js

+var LusterConfigurationError = require('../errors').LusterConfigurationError,
+    typeOf = require('./helpers').typeOf,
+    get = require('./helpers').get,
+    CHECKS;
+
+/**
+ * @typedef PropertyCheck
+ * @property {Boolean} required default: `false`
+ * @property {String|String[]} type `typeOf()` result
+ */
+
+/**
+ * Hash of configuration properties checks.
+ * Keys are properties paths, values – checks descriptors.
+ * @const
+ * @type {Object}
+ * @property {PropertyCheck} *
+ */
+CHECKS = {
+    // path to worker main module
+    'app': { required: true, type: 'string' },
+    // number of workers to spawn
+    'workers': { type: 'number' },
+
+    // time (in ms) to wait for `online` event from worker
+    'control.forkTimeout': { type: 'number' },
+    // time (in ms) to wait for `exit` event from worker after `disconnect`
+    'control.stopTimeout': { type: 'number' },
+    // if worker dies in `threshold` ms then it's restarts counter increased
+    'control.exitThreshold': { type: 'number' },
+    // allowed restarts before mark worker as dead
+    'control.allowedSequentialDeaths': { type: 'number' },
+
+    // initial port for workers
+    'server.port': { type: ['number', 'string'] },
+    // increase port for every group
+    'server.groups': { type: 'number' },
+    // hash of extensions; keys – modules' names, values – extensions' configs
+    'extensions': { type: 'object' },
+    // path to node_modules directory which contains extensions
+    // configuration directory used by default
+    'extensionsPath': { type: 'string' },
+    // time to wait for configuration of all extensions
+    'extensionsLoadTimeout': { type: 'number' }
+};
+
+/**
+ * @param {String} path to property
+ * @param {*} value
+ * @param {PropertyCheck} check value description
+ * @throws {LusterConfigurationError} if property check has been failed
+ */
+function checkProperty(path, value, check) {
+    var type = typeOf(value),
+        allowedTypes;
+
+    // required property
+    if (type === 'undefined') {
+        if (check.required) {
+            throw LusterConfigurationError.createError(
+                LusterConfigurationError.CODES.PROP_REQUIRED,
+                { property: path });
+        } else {
+            return;
+        }
+    }
+
+    // allowed types
+    allowedTypes = check.type && [].concat(check.type);
+    if (allowedTypes && allowedTypes.indexOf(type) === -1) {
+        throw LusterConfigurationError.createError(
+            LusterConfigurationError.CODES.PROP_TYPE_CHECK_FAILED,
+            {
+                property: path,
+                type: type,
+                expected: allowedTypes.join(' or ')
+            });
+    }
+}
+
+/**
+ * Validate configuration object using descriptions from CHECKS const
+ * @param {Object} conf configuration object
+ * @returns {Number} of failed checks
+ */
+function checkConfiguration(conf) {
+    var failedChecks = 0;
+
+    Object
+        .keys(CHECKS)
+        .forEach(function(path) {
+            // @todo avoid try..catch
+            try {
+                checkProperty(path, get(conf, path), CHECKS[path]);
+            } catch (error) {
+                LusterConfigurationError.ensureError(error).log();
+                ++failedChecks;
+            }
+        });
+
+    return failedChecks;
+}
+
+module.exports = checkConfiguration;

lib/configuration/helpers.js

+var util = require('util'),
+    LusterConfigurationError = require('../errors').LusterConfigurationError;
+
+/**
+ * @param {*} value
+ * @returns {String} `typeof` result extended with 'array', 'regexp', 'date' and 'error'
+ */
+function typeOf(value) {
+    var type = typeof value;
+
+    if (type === 'object') {
+        if (util.isArray(value)) {
+            type = 'array';
+        } else if (util.isRegExp(value)) {
+            type = 'regexp';
+        } else if (util.isDate(value)) {
+            type = 'date';
+        } else if (util.isError(value)) {
+            type = 'error';
+        }
+    }
+
+    return type;
+}
+
+/**
+ * @param {Object} context
+ * @param {String} path
+ * @param {*} value
+ */
+function set(context, path, value) {
+    var ctx = context,
+        props = path.split('.'),
+        target = props.pop(),
+        i, size,
+        propName,
+        type;
+
+    for (i = 0, size = props.length; i < size; i++) {
+        propName = props[i];
+        type = typeOf(ctx[propName]);
+
+        if (type === 'undefined') {
+            ctx[propName] = {};
+        } else if (type !== 'object') {
+            throw LusterConfigurationError.createError(
+                LusterConfigurationError.CODES.CAN_NOT_SET_ATOMIC_PROPERTY_FIELD,
+                { path: props.slice(0, size).join('.') });
+        }
+
+        ctx = ctx[propName];
+    }
+
+    delete ctx[target];
+    ctx[target] = value;
+}
+
+/**
+ * @param {*} context
+ * @param {String} [path]
+ * @param {*} [defaultValue]
+ * @returns {*} property by path or default value if absent
+ */
+function get(context, path, defaultValue) {
+    if (typeof path === 'undefined' || path === '') {
+        return context;
+    }
+
+    var props = path.split('.'),
+        prop = props[0],
+        i, size,
+        ctx = context;
+
+    for (i = 0, size = props.length; i < size; prop = props[++i]) {
+        if (typeof ctx === 'undefined' || ctx === null ||
+            ! Object.prototype.hasOwnProperty.call(ctx, prop)) {
+            return defaultValue;
+        }
+
+        ctx = ctx[prop];
+    }
+
+    return ctx;
+}
+
+/**
+ * @param {*} context
+ * @param {String} [path]
+ * @returns {Boolean} `true` if property exists
+ */
+function has(context, path) {
+    if (typeof path === 'undefined' || path === '') {
+        return context;
+    }
+
+    var props = path.split('.'),
+        prop = props[0],
+        i, size,
+        ctx = context;
+
+    for (i = 0, size = props.length; i < size; prop = props[++i]) {
+        if (typeof ctx === 'undefined' || ctx === null ||
+            ! Object.prototype.hasOwnProperty.call(ctx, prop)) {
+            return false;
+        }
+
+        ctx = ctx[prop];
+    }
+
+    return true;
+}
+
+module.exports = {
+    typeOf: typeOf,
+    has: has,
+    get: get,
+    set: set,
+};

lib/configuration/index.js

+var path = require('path'),
+    typeOf = require('./helpers').typeOf,
+    get = require('./helpers').get,
+    set = require('./helpers').set,
+    has = require('./helpers').has;
+
+/**
+ * @constructor
+ * @class Configuration
+ */
+function Configuration(config, basedir) {
+    /** @private */
+    this._resolveBaseDir = basedir || process.cwd();
+
+    Object
+        .keys(config)
+        .forEach(function(propName) {
+            this[propName] = config[propName];
+        }, this);
+}
+
+/**
+ * @param {String} path
+ * @param {*} [defaultValue]
+ * @returns {*}
+ * @see get
+ * @public
+ */
+Configuration.prototype.get = function(path, defaultValue) {
+    return get(this, path, defaultValue);
+};
+
+/**
+ * @param {String} path
+ * @returns {Boolean}
+ * @see has
+ * @public
+ */
+Configuration.prototype.has = function(path) {
+    return has(this, path);
+};
+
+/**
+ * Shortcut for `Object.keys(c.get('some.obj.prop', {}))`
+ * @param {String} [path]
+ * @returns {String[]} keys of object property by path or
+ *      empty array if property doesn't exists or not an object
+ * @public
+ */
+Configuration.prototype.getKeys = function(path) {
+    var obj = get(this, path);
+
+    if (typeOf(obj) !== 'object') {
+        return [];
+    } else {
+        return Object.keys(obj);
+    }
+};
+
+/**
+ * Shortcut for `path.resolve(process.cwd(), c.get(path, 'default.file'))`
+ * @param {String} propPath
+ * @param {String} [defaultPath]
+ * @returns {String} absolute path
+ * @public
+ */
+Configuration.prototype.resolve = function(propPath, defaultPath) {
+    return path.resolve(
+        this._resolveBaseDir,
+        get(this, propPath, defaultPath));
+};
+
+/**
+ * @returns {String} base dir used in `resolve()`
+ * @public
+ */
+Configuration.prototype.getBaseDir = function() {
+    return this._resolveBaseDir;
+};
+
+/**
+ * Create Configuration instance from plain object
+ * @param {Object|*} config
+ * @param {String} basedir - base dir for `resolve` method
+ * @returns {Configuration|*} Configuration instance if `config` is object or `config` itself in other case
+ * @public
+ * @static
+ */
+Configuration.extend = function(config, basedir) {
+    return typeOf(config) === 'object' ?
+        new Configuration(config, basedir) :
+        config;
+};
+
+/**
+ * Override config properties using `LUSTER_CONF` environment variable.
+ *
+ * @description
+ *      LUSTER_CONF='PATH=VALUE;...'
+ *
+ *      ; – properties separator;
+ *      = – property and value separator;
+ *      PATH – property path;
+ *      VALUE – property value, JSON.parse applied to it,
+ *          if JSON.parse failed, then value used as string.
+ *          You MUST quote a string if it contains semicolon.
+ *
+ *      Spaces between PATH, "=", ";" and VALUE are insignificant.
+ *
+ * @example
+ *      LUSTER_CONF='server.port=8080'
+ *        # { server: { port: 8080 } }
+ *
+ *      LUSTER_CONF='app=./worker_debug.js; workers=1'
+ *        # { app: "./worker_debug.js", workers : 1 }
+ *
+ *      LUSTER_CONF='logStream='
+ *        # remove option "logStream"
+ *
+ *      LUSTER_CONF='server={"port":8080}'
+ *        # { server: { port: 8080 } }
+ *
+ * @param {Object} config
+ * @throws {LusterConfigurationError} if you trying to
+ *      set property of atomic property, for example,
+ *      error will be thrown if you have property
+ *      `extensions.sample.x = 10` in the configuration and
+ *      environment variable `LUSTER_EXTENSIONS_SAMPLE_X_Y=5`
+ */
+Configuration.applyEnvironment = function(config) {
+    if ( ! process.env.LUSTER_CONF) {
+        return;
+    }
+
+    function parseProp(prop) {
+        var delimeterPos = prop.indexOf('='),
+            propPath,
+            propValue;
+
+        if (delimeterPos === 0 || delimeterPos === -1) {
+            return;
+        }
+
+        propPath = prop.substr(0, delimeterPos).trim();
+        propValue = prop.substr(delimeterPos + 1).trim();
+
+        if (propValue === '') {
+            propValue = undefined;
+        } else {
+            try {
+                // try to parse propValue as JSON,
+                // if parsing failed use raw `propValue` as string
+                propValue = JSON.parse(propValue);
+            } catch(error) { // eslint-disable-line no-empty
+            }
+        }
+
+        set(config, propPath, propValue);
+    }
+
+    var conf = process.env.LUSTER_CONF,
+        lastSeparator = -1,
+        i = 0,
+        openQuote = false;
+
+    while (conf.length > i++) {
+        switch (conf[i]) {
+        case '"' :
+            openQuote = ! openQuote;
+            break;
+        case ';' :
+            if ( ! openQuote) {
+                parseProp(conf.substring(lastSeparator + 1, i));
+                lastSeparator = i;
+            }
+        }
+    }
+
+    if (lastSeparator < conf.length) {
+        parseProp(conf.substring(lastSeparator + 1));
+    }
+};
+
+Configuration.check = require('./check');
+
+module.exports = Configuration;

lib/cluster_process.js

@@ -5,4 +5,6 @@ var cluster = require('cluster'),
     RPCCallback = require('./rpc-callback'),
-    Configurable = require('./configurable'),
+    Configuration = require('./configuration'),
+    EventEmitterEx = require('./event_emitter_ex'),
     LusterClusterProcessError = require('./errors').LusterClusterProcessError,
+    LusterConfigurationError = require('./errors').LusterConfigurationError,
     ClusterProcess;
@@ -27,5 +29,5 @@
  * @class ClusterProcess
- * @augments Configurable
+ * @augments EventEmitterEx
  */
-ClusterProcess = Configurable.create(function ClusterProcess() {
+ClusterProcess = EventEmitterEx.create(function ClusterProcess() {
     ClusterProcess.__super.apply(this, arguments);
@@ -40,2 +42,8 @@
 
+    /**
+     * @type {Configuration}
+     * @public
+     */
+    this.config = null;
+
     this.once('configured', this._onConfigured.bind(this));
@@ -71,2 +79,41 @@
 /**
+ * @event ClusterProcess#configured
+ */
+
+/**
+ * @fires ClusterProcess#configured
+ * @param {Object} config
+ * @param {Boolean} [applyEnv=true]
+ * @param {String} [basedir=process.cwd()] for Configuration#resolve relative paths
+ * @returns {ClusterProcess} this
+ * @throws {LusterConfigurationError} if configuration check failed (check errors will be logged to STDERR)
+ * @public
+ */
+ClusterProcess.prototype.configure = function(config, applyEnv, basedir) {
+    if (typeof applyEnv === 'undefined' || applyEnv) {
+        Configuration.applyEnvironment(config);
+    }
+
+    if (typeof(basedir) === 'undefined') {
+        basedir = process.cwd();
+    }
+
+    if (Configuration.check(config) > 0) {
+        this.emit('error',
+            LusterConfigurationError.createError(
+                LusterConfigurationError.CODES.CONFIGURATION_CHECK_FAILED));
+    } else {
+        this.config = Configuration.extend(config, basedir);
+
+        // hack to tweak underlying EventEmitter max listeners
+        // if your luster-based app extensively use luster events
+        this.setMaxListeners(this.config.get('maxEventListeners', 100));
+
+        this.emit('configured');
+    }
+
+    return this;
+};
+
+/**
  * @param {String} name
@@ -85,3 +132,3 @@ * @param {Function} callback function(error)
     // else returns original value
-    config = this.extendConfig(config);
+    config = Configuration.extend(config, this.config.getBaseDir());
 
@@ -131,3 +178,3 @@ if (extension.configure.length > 2) {
 ClusterProcess.prototype._onConfigured = function() {
-    cluster.setMaxListeners(this._maxListeners);
+    cluster.setMaxListeners(this.getMaxListeners());
 
@@ -134,0 +181,0 @@ // try to use `extensionsPath` option to resolve extensions' modules

lib/event_emitter_ex.js

@@ -20,3 +20,2 @@ var Objex = require('objex'),
     EventEmitterEx.prototype.emit = function() {
-        var iid = this.wid || this.id;
         var args = Array.prototype
@@ -26,6 +25,4 @@ .slice.call(arguments, 0)
 
-        iid = typeof iid === 'undefined' ? '' : '(' + iid + ')';
+        console.log('%s(%s).emit(%s)', this.constructor.name || 'EventEmitterEx', this.wid, args.join(', '));
 
-        console.log('%s%s.emit(%s)', this.constructor.name || 'EventEmitterEx', iid, args.join(', '));
-
         return EventEmitterEx.__super.prototype.emit.apply(this, arguments);
@@ -32,0 +29,0 @@ };

lib/master.js

@@ -241,3 +241,3 @@ var os = require('os'),
             port: isServerPortSet ? port.next(group) : 0,
-            _maxListeners: this._maxListeners
+            maxListeners: this.getMaxListeners(),
         }));
@@ -244,0 +244,0 @@

lib/worker_wrapper.js

@@ -55,5 +55,5 @@ var cluster = require('cluster'),
     if (options &&
-        typeof options._maxListeners !== 'undefined' &&
-        options._maxListeners > this._maxListeners) {
-        this.setMaxListeners(options._maxListeners);
+        typeof options.maxListeners !== 'undefined' &&
+        options.maxListeners > this.getMaxListeners()) {
+        this.setMaxListeners(options.maxListeners);
     }
@@ -215,3 +215,6 @@
     if ( ! master.hasRegisteredRemoteCommand(RPC.fns.master.broadcastWorkerEvent)) {
-        master.registerRemoteCommand(RPC.fns.master.broadcastWorkerEvent, WorkerWrapper.broadcastWorkerEvent.bind(master));
+        master.registerRemoteCommand(
+            RPC.fns.master.broadcastWorkerEvent,
+            WorkerWrapper.broadcastWorkerEvent.bind(master)
+        );
     }
@@ -306,3 +309,2 @@
     this.remoteCall(RPC.fns.worker.applyForeignProperties, {
-        wid: this.wid,
         pid: this.process.pid
@@ -479,3 +481,4 @@ });
         self._worker = cluster.fork({
-            port: self.options.port
+            port: self.options.port,
+            LUSTER_WID: self.wid,
         });
@@ -482,0 +485,0 @@

lib/worker.js

@@ -17,2 +17,13 @@ var cluster = require('cluster'),
     /**
+     * @memberOf {Worker}
+     * @property {Number} Persistent Worker identifier
+     * @readonly
+     * @public
+     */
+    Object.defineProperty(this, 'wid', {
+        value: process.env.LUSTER_WID,
+        enumerable: true
+    });
+
+    /**
      * Worker id (alias for cluster.worker.id)
@@ -19,0 +30,0 @@ * @memberOf {Worker}

package.json

 {
   "name": "luster",
-  "version": "1.0.0",
+  "version": "1.1.0",
   "description": "Node.js cluster wrapper",
@@ -5,0 +5,0 @@ "main": "./lib/luster.js",

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coverage/lcov-report/index.html

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coverage/lcov-report/lib/configurable.js.html

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-<span class="cline-any cline-neutral">&nbsp;</span>
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-<span class="cline-any cline-neutral">&nbsp;</span>
-<span class="cline-any cline-neutral">&nbsp;</span>
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-<span class="cline-any cline-yes">192×</span>
-<span class="cline-any cline-neutral">&nbsp;</span>
-<span class="cline-any cline-neutral">&nbsp;</span>
-<span class="cline-any cline-neutral">&nbsp;</span>
-<span class="cline-any cline-yes">192×</span>
-<span class="cline-any cline-yes">148×</span>
-<span class="cline-any cline-yes">1×</span>
-<span class="cline-any cline-neutral">&nbsp;</span>
-<span class="cline-any cline-neutral">&nbsp;</span>
-<span class="cline-any cline-neutral">&nbsp;</span>
-<span class="cline-any cline-yes">147×</span>
-<span class="cline-any cline-neutral">&nbsp;</span>
-<span class="cline-any cline-neutral">&nbsp;</span>
-<span class="cline-any cline-neutral">&nbsp;</span>
-<span class="cline-any cline-neutral">&nbsp;</span>
-<span class="cline-any cline-yes">44×</span>
-<span class="cline-any cline-yes">44×</span>
-<span class="cline-any cline-yes">1×</span>
-<span class="cline-any cline-neutral">&nbsp;</span>
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-<span class="cline-any cline-yes">1×</span>
-<span class="cline-any cline-yes">16×</span>
-<span class="cline-any cline-neutral">&nbsp;</span>
-<span class="cline-any cline-yes">16×</span>
-<span class="cline-any cline-neutral">&nbsp;</span>
-<span class="cline-any cline-neutral">&nbsp;</span>
-<span class="cline-any cline-neutral">&nbsp;</span>
-<span class="cline-any cline-yes">192×</span>
-<span class="cline-any cline-yes">192×</span>
-<span class="cline-any cline-neutral">&nbsp;</span>
-<span class="cline-any cline-yes">2×</span>
-<span class="cline-any cline-yes">2×</span>
-<span class="cline-any cline-neutral">&nbsp;</span>
-<span class="cline-any cline-neutral">&nbsp;</span>
-<span class="cline-any cline-neutral">&nbsp;</span>
-<span class="cline-any cline-yes">16×</span>
-<span class="cline-any cline-neutral">&nbsp;</span>
-<span class="cline-any cline-neutral">&nbsp;</span>
-<span class="cline-any cline-neutral">&nbsp;</span>
-<span class="cline-any cline-neutral">&nbsp;</span>
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-<span class="cline-any cline-neutral">&nbsp;</span>
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-<span class="cline-any cline-neutral">&nbsp;</span>
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-<span class="cline-any cline-yes">14×</span>
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-<span class="cline-any cline-neutral">&nbsp;</span>
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-<span class="cline-any cline-yes">16×</span>
-<span class="cline-any cline-neutral">&nbsp;</span>
-<span class="cline-any cline-neutral">&nbsp;</span>
-<span class="cline-any cline-yes">1×</span>
-<span class="cline-any cline-neutral">&nbsp;</span></td><td class="text"><pre class="prettyprint lang-js">var util = require('util'),
-    path = require('path'),
-    EventEmitterEx = require('./event_emitter_ex'),
-    LusterConfigurationError = require('./errors').LusterConfigurationError,
-    CHECKS,
-    Configurable;
-&nbsp;
-/**
- * @typedef PropertyCheck
- * @property {Boolean} required default: `false`
- * @property {String|String[]} type `typeOf()` result
- */
-&nbsp;
-/**
- * Hash of configuration properties checks.
- * Keys are properties paths, values – checks descriptors.
- * @const
- * @type {Object}
- * @property {PropertyCheck} *
- */
-CHECKS = {
-    // path to worker main module
-    'app' : { required : true, type : 'string' },
-    // number of workers to spawn
-    'workers' : { type : 'number' },
-&nbsp;
-    // time (in ms) to wait for `online` event from worker
-    'control.forkTimeout' : { type : 'number' },
-    // time (in ms) to wait for `exit` event from worker after `disconnect`
-    'control.stopTimeout' : { type : 'number' },
-    // if worker dies in `threshold` ms then it's restarts counter increased
-    'control.exitThreshold' : { type : 'number' },
-    // allowed restarts before mark worker as dead
-    'control.allowedSequentialDeaths' : { type : 'number' },
-&nbsp;
-    // initial port for workers
-    'server.port' : { type : [ 'number', 'string' ] },
-    // increase port for every group
-    'server.groups' : { type : 'number' },
-&nbsp;
-    // every worker has unique debug port (debug.port + worker number)
-    'debug.port' : { type : 'number' },
-&nbsp;
-    // hash of extensions; keys – modules' names, values – extensions' configs
-    'extensions' : { type : 'object' },
-    // path to node_modules directory which contains extensions
-    // configuration directory used by default
-    'extensionsPath' : { type : 'string' },
-    // time to wait for configuration of all extensions
-    'extensionsLoadTimeout' : { type : 'number' }
-};
-&nbsp;
-/**
- * @param {*} value
- * @returns {String} `typeof` result extended with 'array', 'regexp', 'date' and 'error'
- */
-function typeOf(value) {
-    var type = typeof value;
-&nbsp;
-    if (type === 'object') {
-        <span class="missing-if-branch" title="if path not taken" >I</span>if (util.isArray(value)) {
-<span class="cstat-no" title="statement not covered" >            type = 'array';</span>
-        } else <span class="missing-if-branch" title="if path not taken" >I</span>if (util.isRegExp(value)) {
-<span class="cstat-no" title="statement not covered" >            type = 'regexp';</span>
-        } else <span class="missing-if-branch" title="if path not taken" >I</span>if (util.isDate(value)) {
-<span class="cstat-no" title="statement not covered" >            type = 'date';</span>
-        } else <span class="missing-if-branch" title="if path not taken" >I</span>if (util.isError(value)) {
-<span class="cstat-no" title="statement not covered" >            type = 'error';</span>
-        }
-    }
-&nbsp;
-    return type;
-}
-&nbsp;
-/**
- * @param {Object} context
- * @param {String} path
- * @param {*} value
- */
-function set(context, path, value) {
-    var ctx = context,
-        props = path.split('.'),
-        target = props.pop(),
-        i, size,
-        propName,
-        type;
-&nbsp;
-    for (i = 0, size = props.length; i &lt; size; i++) {
-        propName = props[i];
-        type = typeOf(ctx[propName]);
-&nbsp;
-        if (type === 'undefined') {
-            ctx[propName] = {};
-        } else if (type !== 'object') {
-            throw LusterConfigurationError.createError(
-                LusterConfigurationError.CODES.CAN_NOT_SET_ATOMIC_PROPERTY_FIELD,
-                { path : props.slice(0, size).join('.') });
-        }
-&nbsp;
-        ctx = ctx[propName];
-    }
-&nbsp;
-    delete ctx[target];
-    ctx[target] = value;
-}
-&nbsp;
-/**
- * @param {*} context
- * @param {String} [path]
- * @param {*} [defaultValue]
- * @returns {*} property by path or default value if absent
- */
-function get(context, path, defaultValue) {
-    <span class="missing-if-branch" title="if path not taken" >I</span>if (typeof path === 'undefined' || path === '') {
-<span class="cstat-no" title="statement not covered" >        return context;</span>
-    }
-&nbsp;
-    var props = path.split('.'),
-        prop = props[0],
-        i, size,
-        ctx = context;
-&nbsp;
-    for (i = 0, size = props.length; i &lt; size; prop = props[++i]) {
-        if (typeof ctx === 'undefined' || ctx === null ||
-            ! Object.prototype.hasOwnProperty.call(ctx, prop)) {
-            return defaultValue;
-        }
-&nbsp;
-        ctx = ctx[prop];
-    }
-&nbsp;
-    return ctx;
-}
-&nbsp;
-/**
- * @param {*} context
- * @param {String} [path]
- * @returns {Boolean} `true` if property exists
- */
-<span class="fstat-no" title="function not covered" >function has(context, path) {</span>
-<span class="cstat-no" title="statement not covered" >    if (typeof path === 'undefined' || path === '') {</span>
-<span class="cstat-no" title="statement not covered" >        return context;</span>
-    }
-&nbsp;
-<span class="cstat-no" title="statement not covered" >    var props = path.split('.'),</span>
-        prop = props[0],
-        i, size,
-        ctx = context;
-&nbsp;
-<span class="cstat-no" title="statement not covered" >    for (i = 0, size = props.length; i &lt; size; prop = props[++i]) {</span>
-<span class="cstat-no" title="statement not covered" >        if (typeof ctx === 'undefined' || ctx === null ||</span>
-            ! Object.prototype.hasOwnProperty.call(ctx, prop)) {
-<span class="cstat-no" title="statement not covered" >            return false;</span>
-        }
-&nbsp;
-<span class="cstat-no" title="statement not covered" >        ctx = ctx[prop];</span>
-    }
-&nbsp;
-<span class="cstat-no" title="statement not covered" >    return true;</span>
-}
-&nbsp;
-/**
- * @param {String} path to property
- * @param {*} value
- * @param {PropertyCheck} check value description
- * @throws {LusterConfigurationError} if property check has been failed
- */
-function checkProperty(path, value, check) {
-    var type = typeOf(value),
-        allowedTypes;
-&nbsp;
-    // required property
-    if (type === 'undefined') {
-        if (check.required) {
-            throw LusterConfigurationError.createError(
-                LusterConfigurationError.CODES.PROP_REQUIRED,
-                { property : path });
-        } else {
-            return;
-        }
-    }
-&nbsp;
-    // allowed types
-    allowedTypes = check.type &amp;&amp; [].concat(check.type);
-    if (allowedTypes &amp;&amp; allowedTypes.indexOf(type) === -1) {
-        throw LusterConfigurationError.createError(
-            LusterConfigurationError.CODES.PROP_TYPE_CHECK_FAILED,
-            {
-                property : path,
-                type : type,
-                expected : allowedTypes.join(' or ')
-            });
-    }
-}
-&nbsp;
-/**
- * Validate configuration object using descriptions from CHECKS const
- * @param {Object} conf configuration object
- * @returns {Number} of failed checks
- */
-function check(conf) {
-    var failedChecks = 0;
-&nbsp;
-    Object
-        .keys(CHECKS)
-        .forEach(function(path) {
-            // @todo avoid try..catch
-            try {
-                checkProperty(path, get(conf, path), CHECKS[path]);
-            } catch (error) {
-                LusterConfigurationError.ensureError(error).log();
-                ++failedChecks;
-            }
-        });
-&nbsp;
-    return failedChecks;
-}
-&nbsp;
-/**
- * Override config properties using `LUSTER_CONF` environment variable.
- *
- * @description
- *      LUSTER_CONF='PATH=VALUE;...'
- *
- *      ; – properties separator;
- *      = – property and value separator;
- *      PATH – property path;
- *      VALUE – property value, JSON.parse applied to it,
- *          if JSON.parse failed, then value used as string.
- *          You MUST quote a string if it contains semicolon.
- *
- *      Spaces between PATH, "=", ";" and VALUE are insignificant.
- *
- * @example
- *      LUSTER_CONF='server.port=8080'
- *        # { server : { port : 8080 } }
- *
- *      LUSTER_CONF='app=./worker_debug.js; workers=1'
- *        # { app : "./worker_debug.js", workers : 1 }
- *
- *      LUSTER_CONF='logStream='
- *        # remove option "logStream"
- *
- *      LUSTER_CONF='server={"port":8080}'
- *        # { server : { port : 8080 } }
- *
- * @param {Object} config
- * @throws {LusterConfigurationError} if you trying to
- *      set property of atomic property, for example,
- *      error will be thrown if you have property
- *      `extensions.sample.x = 10` in the configuration and
- *      environment variable `LUSTER_EXTENSIONS_SAMPLE_X_Y=5`
- */
-function applyEnvironment(config) {
-    if ( ! process.env.LUSTER_CONF) {
-        return;
-    }
-&nbsp;
-    function parseProp(prop) {
-        var delimeterPos = prop.indexOf('='),
-            propPath,
-            propValue;
-&nbsp;
-        if (delimeterPos === 0 || delimeterPos === -1) {
-            return;
-        }
-&nbsp;
-        propPath = prop.substr(0, delimeterPos).trim();
-        propValue = prop.substr(delimeterPos + 1).trim();
-&nbsp;
-        if (propValue === '') {
-            propValue = undefined;
-        } else {
-            try {
-                // try to parse propValue as JSON,
-                // if parsing failed use raw `propValue` as string
-                propValue = JSON.parse(propValue);
-            } catch(error) {
-            }
-        }
-&nbsp;
-        set(config, propPath, propValue);
-    }
-&nbsp;
-    var conf = process.env.LUSTER_CONF,
-        lastSeparator = -1,
-        i = 0,
-        openQuote = false;
-&nbsp;
-    while (conf.length &gt; i++) {
-        switch (conf[i]) {
-        case '"' :
-            openQuote = ! openQuote;
-            break;
-        case ';' :
-            if ( ! openQuote) {
-                parseProp(conf.substring(lastSeparator + 1, i));
-                lastSeparator = i;
-            }
-        }
-    }
-&nbsp;
-    <span class="missing-if-branch" title="else path not taken" >E</span>if (lastSeparator &lt; conf.length) {
-        parseProp(conf.substring(lastSeparator + 1));
-    }
-}
-&nbsp;
-/**
- * @constructor
- * @class Configuration
- */
-function Configuration(config, basedir) {
-    /** @private */
-    this._resolveBaseDir = basedir || <span class="branch-1 cbranch-no" title="branch not covered" >process.cwd();</span>
-&nbsp;
-    Object
-        .keys(config)
-        .forEach(function(propName) {
-            this[propName] = config[propName];
-        }, this);
-}
-&nbsp;
-/**
- * @param {String} path
- * @param {*} [defaultValue]
- * @returns {*}
- * @see get
- * @public
- */
-Configuration.prototype.get = function(path, defaultValue) {
-    return get(this, path, defaultValue);
-};
-&nbsp;
-/**
- * @param {String} path
- * @returns {Boolean}
- * @see has
- * @public
- */
-Configuration.prototype.has = <span class="fstat-no" title="function not covered" >function(path) {</span>
-<span class="cstat-no" title="statement not covered" >    return has(this, path);</span>
-};
-&nbsp;
-/**
- * Shortcut for `Object.keys(c.get('some.obj.prop', {}))`
- * @param {String} [path]
- * @returns {String[]} keys of object property by path or
- *      empty array if property doesn't exists or not an object
- * @public
- */
-Configuration.prototype.getKeys = <span class="fstat-no" title="function not covered" >function(path) {</span>
-<span class="cstat-no" title="statement not covered" >    var obj = get(this, path);</span>
-&nbsp;
-<span class="cstat-no" title="statement not covered" >    if (typeOf(obj) !== 'object') {</span>
-<span class="cstat-no" title="statement not covered" >        return [];</span>
-    } else {
-<span class="cstat-no" title="statement not covered" >        return Object.keys(obj);</span>
-    }
-};
-&nbsp;
-/**
- * Shortcut for `path.resolve(process.cwd(), c.get(path, 'default.file'))`
- * @param {String} propPath
- * @param {String} [defaultPath]
- * @returns {String} absolute path
- * @public
- */
-Configuration.prototype.resolve = <span class="fstat-no" title="function not covered" >function(propPath, defaultPath) {</span>
-<span class="cstat-no" title="statement not covered" >    return path.resolve(</span>
-        this._resolveBaseDir,
-        get(this, propPath, defaultPath));
-};
-&nbsp;
-/**
- * @constructor
- * @class Configurable
- * @augments EventEmitterEx
- */
-Configurable = EventEmitterEx.create();
-&nbsp;
-/**
- * base directory for Configuration#resolve method
- * @private
- * @static
- * @type {String}
- */
-Configurable.prototype._resolveBaseDir = process.cwd();
-&nbsp;
-/**
- * create Configuration instance from plain object
- * @param {Object} config
- * @returns {Configuration|*} Configuration instance if `config` is object or `config` itself in other case
- * @public
- */
-Configurable.prototype.extendConfig = function(config) {
-    return typeOf(config) === 'object' ?
-        new Configuration(config, this._resolveBaseDir) :
-<span class="branch-1 cbranch-no" title="branch not covered" >        config;</span>
-};
-&nbsp;
-/**
- * @event Configurable#configured
- */
-&nbsp;
-/**
- * @fires Configurable#configured
- * @param {Object} config
- * @param {Boolean} [applyEnv=true]
- * @param {String} [basedir=process.cwd()] for Configuration#resolve relative paths
- * @returns {Configurable} this
- * @throws {LusterConfigurationError} if configuration check failed (check errors will be logged to STDERR)
- * @public
- */
-Configurable.prototype.configure = function(config, applyEnv, basedir) {
-    if (typeof applyEnv === 'undefined' || applyEnv) {
-        // @todo may be create a deep copy and do not modify origin?
-        applyEnvironment(config);
-    }
-&nbsp;
-    <span class="missing-if-branch" title="if path not taken" >I</span>if (basedir) {
-        /** @private */
-<span class="cstat-no" title="statement not covered" >        this._resolveBaseDir = basedir;</span>
-    }
-&nbsp;
-    if (check(config) &gt; 0) {
-        this.emit('error',
-            LusterConfigurationError.createError(
-                LusterConfigurationError.CODES.CONFIGURATION_CHECK_FAILED));
-    } else {
-        /** @public */
-        this.config = this.extendConfig(config);
-&nbsp;
-        // hack to tweak underlying EventEmitter max listeners
-        // if your luster-based app extensively use luster events
-        this.setMaxListeners(this.config.get('maxEventListeners', 100));
-&nbsp;
-        this.emit('configured');
-    }
-&nbsp;
-    return this;
-};
-&nbsp;
-module.exports = Configurable;
-&nbsp;</pre></td></tr>
-</table></pre>
-<div class='push'></div><!-- for sticky footer -->
-</div><!-- /wrapper -->
-<div class='footer quiet pad2 space-top1 center small'>
-  Code coverage
-  generated by <a href="http://istanbul-js.org/" target="_blank">istanbul</a> at Wed Feb 15 2017 20:32:23 GMT+0300 (MSK)
-</div>
-</div>
-<script src="../prettify.js"></script>
-<script>
-window.onload = function () {
-        if (typeof prettyPrint === 'function') {
-            prettyPrint();
-        }
-};
-</script>
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-</body>
-</html>

coverage/lcov-report/lib/errors.js.html

-<!doctype html>
-<html lang="en">
-<head>
-    <title>Code coverage report for lib/errors.js</title>
-    <meta charset="utf-8" />
-    <link rel="stylesheet" href="../prettify.css" />
-    <link rel="stylesheet" href="../base.css" />
-    <meta name="viewport" content="width=device-width, initial-scale=1">
-    <style type='text/css'>
-        .coverage-summary .sorter {
-            background-image: url(../sort-arrow-sprite.png);
-        }
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-</head>
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-<div class='wrapper'>
-  <div class='pad1'>
-    <h1>
-      <a href="../index.html">all files</a> / <a href="index.html">lib/</a> errors.js
-    </h1>
-    <div class='clearfix'>
-      <div class='fl pad1y space-right2'>
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-<span class="cline-any cline-neutral">&nbsp;</span></td><td class="text"><pre class="prettyprint lang-js">var Terror = require('terror'),
-    errors = {};
-&nbsp;
-/**
- * @constructor
- * @class LusterError
- * @augments Terror
- */
-var LusterError = errors.LusterError = Terror.create('LusterError',
-    {
-        ABSTRACT_METHOD_IS_NOT_IMPLEMENTED :
-            'Abstract method "%method%" is not implemented in the %klass%'
-    });
-&nbsp;
-/**
- * @constructor
- * @class LusterWorkerError
- * @augments LusterError
- */
-errors.LusterWorkerError = LusterError.create('LusterWorkerError',
-    {
-        ALREADY_READY :
-            'Worker#ready() called when worker is is "ready" state already'
-    });
-&nbsp;
-/**
- * @constructor
- * @class LusterConfigurationError
- * @augments LusterError
- */
-errors.LusterConfigurationError = LusterError.create('LusterConfigurationError',
-    {
-        CONFIGURATION_CHECK_FAILED :
-            'Configuration check failed',
-        PROP_REQUIRED :
-            'Required property "%property%" is absent',
-        PROP_TYPE_CHECK_FAILED :
-            'Property "%property%" type is "%type%", but %expected% is expected',
-        PROP_REGEXP_CHECK_FAILED :
-            'Property "%property%" doesn\'t meet the regexp "%regexp%"',
-        CAN_NOT_SET_ATOMIC_PROPERTY_FIELD :
-            'Property "%path%" already exists and is not an object'
-    });
-&nbsp;
-/**
- * @constructor
- * @class LusterConfigurationError
- * @augments LusterError
- */
-errors.LusterWorkerWrapperError = LusterError.create('LusterWorkerWrapperError',
-    {
-        INVALID_ATTEMPT_TO_CHANGE_STATE :
-            'Invalid attempt to change worker #%wid% (pid: %pid%) state from "%state%" to "%targetState%"',
-        REMOTE_COMMAND_CALL_TO_STOPPED_WORKER :
-            'Remote command call "%command%" to stopped worker #%wid%'
-    });
-&nbsp;
-/**
- * @constructor
- * @class LusterClusterProcessError
- * @augments LusterError
- */
-errors.LusterClusterProcessError = LusterError.create('LusterClusterProcessError',
-    {
-        REMOTE_COMMAND_ALREADY_REGISTERED :
-            'Command "%name%" already registered as allowed for remote calls',
-        REMOTE_COMMAND_IS_NOT_REGISTERED :
-            'Remote command "%name%" is not registered on %klass%',
-        EXTENSIONS_LOAD_TIMEOUT :
-            'Extensions %timeouted% not loaded in %timeout% ms'
-    });
-&nbsp;
-/**
- * @constructor
- * @class LusterRPCCallbackError
- * @augments LusterError
- */
-errors.LusterRPCCallbackError = LusterError.create('LusterRPCCallbackError',
-    {
-        REMOTE_CALL_WITH_CALLBACK_TIMEOUT :
-            'Remote call failed due to timeout for command "%command%"'
-    });
-&nbsp;
-/**
- * @constructor
- * @class LusterPortError
- * @augments LusterError
- */
-errors.LusterPortError = LusterError.create('LusterPortError',
-    {
-        NOT_UNIX_SOCKET :
-            '"%value%" is not a unix socket',
-        CAN_NOT_UNLINK_UNIX_SOCKET :
-            'Can not unlink unix socket "%socketPath%"'
-    });
-&nbsp;
-module.exports = errors;
-&nbsp;</pre></td></tr>
-</table></pre>
-<div class='push'></div><!-- for sticky footer -->
-</div><!-- /wrapper -->
-<div class='footer quiet pad2 space-top1 center small'>
-  Code coverage
-  generated by <a href="http://istanbul-js.org/" target="_blank">istanbul</a> at Wed Feb 15 2017 20:32:23 GMT+0300 (MSK)
-</div>
-</div>
-<script src="../prettify.js"></script>
-<script>
-window.onload = function () {
-        if (typeof prettyPrint === 'function') {
-            prettyPrint();
-        }
-};
-</script>
-<script src="../sorter.js"></script>
-</body>
-</html>

coverage/lcov-report/lib/event_emitter_ex.js.html

-<!doctype html>
-<html lang="en">
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-        }
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-     * @class EventEmitterEx
-     * @augments EventEmitter
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-     */
-    EventEmitterEx = Objex.wrap(EventEmitter).create();
-&nbsp;
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-                .slice.call(arguments, 0)
-                .map(inspect);
-&nbsp;
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-&nbsp;
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-&nbsp;
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-}
-&nbsp;
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coverage/lcov-report/lib/index.html

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coverage/lcov-report/sorter.js

-var addSorting = (function () {
-    "use strict";
-    var cols,
-        currentSort = {
-            index: 0,
-            desc: false
-        };
-
-    // returns the summary table element
-    function getTable() { return document.querySelector('.coverage-summary'); }
-    // returns the thead element of the summary table
-    function getTableHeader() { return getTable().querySelector('thead tr'); }
-    // returns the tbody element of the summary table
-    function getTableBody() { return getTable().querySelector('tbody'); }
-    // returns the th element for nth column
-    function getNthColumn(n) { return getTableHeader().querySelectorAll('th')[n]; }
-
-    // loads all columns
-    function loadColumns() {
-        var colNodes = getTableHeader().querySelectorAll('th'),
-            colNode,
-            cols = [],
-            col,
-            i;
-
-        for (i = 0; i < colNodes.length; i += 1) {
-            colNode = colNodes[i];
-            col = {
-                key: colNode.getAttribute('data-col'),
-                sortable: !colNode.getAttribute('data-nosort'),
-                type: colNode.getAttribute('data-type') || 'string'
-            };
-            cols.push(col);
-            if (col.sortable) {
-                col.defaultDescSort = col.type === 'number';
-                colNode.innerHTML = colNode.innerHTML + '<span class="sorter"></span>';
-            }
-        }
-        return cols;
-    }
-    // attaches a data attribute to every tr element with an object
-    // of data values keyed by column name
-    function loadRowData(tableRow) {
-        var tableCols = tableRow.querySelectorAll('td'),
-            colNode,
-            col,
-            data = {},
-            i,
-            val;
-        for (i = 0; i < tableCols.length; i += 1) {
-            colNode = tableCols[i];
-            col = cols[i];
-            val = colNode.getAttribute('data-value');
-            if (col.type === 'number') {
-                val = Number(val);
-            }
-            data[col.key] = val;
-        }
-        return data;
-    }
-    // loads all row data
-    function loadData() {
-        var rows = getTableBody().querySelectorAll('tr'),
-            i;
-
-        for (i = 0; i < rows.length; i += 1) {
-            rows[i].data = loadRowData(rows[i]);
-        }
-    }
-    // sorts the table using the data for the ith column
-    function sortByIndex(index, desc) {
-        var key = cols[index].key,
-            sorter = function (a, b) {
-                a = a.data[key];
-                b = b.data[key];
-                return a < b ? -1 : a > b ? 1 : 0;
-            },
-            finalSorter = sorter,
-            tableBody = document.querySelector('.coverage-summary tbody'),
-            rowNodes = tableBody.querySelectorAll('tr'),
-            rows = [],
-            i;
-
-        if (desc) {
-            finalSorter = function (a, b) {
-                return -1 * sorter(a, b);
-            };
-        }
-
-        for (i = 0; i < rowNodes.length; i += 1) {
-            rows.push(rowNodes[i]);
-            tableBody.removeChild(rowNodes[i]);
-        }
-
-        rows.sort(finalSorter);
-
-        for (i = 0; i < rows.length; i += 1) {
-            tableBody.appendChild(rows[i]);
-        }
-    }
-    // removes sort indicators for current column being sorted
-    function removeSortIndicators() {
-        var col = getNthColumn(currentSort.index),
-            cls = col.className;
-
-        cls = cls.replace(/ sorted$/, '').replace(/ sorted-desc$/, '');
-        col.className = cls;
-    }
-    // adds sort indicators for current column being sorted
-    function addSortIndicators() {
-        getNthColumn(currentSort.index).className += currentSort.desc ? ' sorted-desc' : ' sorted';
-    }
-    // adds event listeners for all sorter widgets
-    function enableUI() {
-        var i,
-            el,
-            ithSorter = function ithSorter(i) {
-                var col = cols[i];
-
-                return function () {
-                    var desc = col.defaultDescSort;
-
-                    if (currentSort.index === i) {
-                        desc = !currentSort.desc;
-                    }
-                    sortByIndex(i, desc);
-                    removeSortIndicators();
-                    currentSort.index = i;
-                    currentSort.desc = desc;
-                    addSortIndicators();
-                };
-            };
-        for (i =0 ; i < cols.length; i += 1) {
-            if (cols[i].sortable) {
-                // add the click event handler on the th so users
-                // dont have to click on those tiny arrows
-                el = getNthColumn(i).querySelector('.sorter').parentElement;
-                if (el.addEventListener) {
-                    el.addEventListener('click', ithSorter(i));
-                } else {
-                    el.attachEvent('onclick', ithSorter(i));
-                }
-            }
-        }
-    }
-    // adds sorting functionality to the UI
-    return function () {
-        if (!getTable()) {
-            return;
-        }
-        cols = loadColumns();
-        loadData(cols);
-        addSortIndicators();
-        enableUI();
-    };
-})();
-
-window.addEventListener('load', addSorting);

lib/configurable.js

-var util = require('util'),
-    path = require('path'),
-    EventEmitterEx = require('./event_emitter_ex'),
-    LusterConfigurationError = require('./errors').LusterConfigurationError,
-    CHECKS,
-    Configurable;
-
-/**
- * @typedef PropertyCheck
- * @property {Boolean} required default: `false`
- * @property {String|String[]} type `typeOf()` result
- */
-
-/**
- * Hash of configuration properties checks.
- * Keys are properties paths, values – checks descriptors.
- * @const
- * @type {Object}
- * @property {PropertyCheck} *
- */
-CHECKS = {
-    // path to worker main module
-    'app': { required: true, type: 'string' },
-    // number of workers to spawn
-    'workers': { type: 'number' },
-
-    // time (in ms) to wait for `online` event from worker
-    'control.forkTimeout': { type: 'number' },
-    // time (in ms) to wait for `exit` event from worker after `disconnect`
-    'control.stopTimeout': { type: 'number' },
-    // if worker dies in `threshold` ms then it's restarts counter increased
-    'control.exitThreshold': { type: 'number' },
-    // allowed restarts before mark worker as dead
-    'control.allowedSequentialDeaths': { type: 'number' },
-
-    // initial port for workers
-    'server.port': { type: ['number', 'string'] },
-    // increase port for every group
-    'server.groups': { type: 'number' },
-    // hash of extensions; keys – modules' names, values – extensions' configs
-    'extensions': { type: 'object' },
-    // path to node_modules directory which contains extensions
-    // configuration directory used by default
-    'extensionsPath': { type: 'string' },
-    // time to wait for configuration of all extensions
-    'extensionsLoadTimeout': { type: 'number' }
-};
-
-/**
- * @param {*} value
- * @returns {String} `typeof` result extended with 'array', 'regexp', 'date' and 'error'
- */
-function typeOf(value) {
-    var type = typeof value;
-
-    if (type === 'object') {
-        if (util.isArray(value)) {
-            type = 'array';
-        } else if (util.isRegExp(value)) {
-            type = 'regexp';
-        } else if (util.isDate(value)) {
-            type = 'date';
-        } else if (util.isError(value)) {
-            type = 'error';
-        }
-    }
-
-    return type;
-}
-
-/**
- * @param {Object} context
- * @param {String} path
- * @param {*} value
- */
-function set(context, path, value) {
-    var ctx = context,
-        props = path.split('.'),
-        target = props.pop(),
-        i, size,
-        propName,
-        type;
-
-    for (i = 0, size = props.length; i < size; i++) {
-        propName = props[i];
-        type = typeOf(ctx[propName]);
-
-        if (type === 'undefined') {
-            ctx[propName] = {};
-        } else if (type !== 'object') {
-            throw LusterConfigurationError.createError(
-                LusterConfigurationError.CODES.CAN_NOT_SET_ATOMIC_PROPERTY_FIELD,
-                { path: props.slice(0, size).join('.') });
-        }
-
-        ctx = ctx[propName];
-    }
-
-    delete ctx[target];
-    ctx[target] = value;
-}
-
-/**
- * @param {*} context
- * @param {String} [path]
- * @param {*} [defaultValue]
- * @returns {*} property by path or default value if absent
- */
-function get(context, path, defaultValue) {
-    if (typeof path === 'undefined' || path === '') {
-        return context;
-    }
-
-    var props = path.split('.'),
-        prop = props[0],
-        i, size,
-        ctx = context;
-
-    for (i = 0, size = props.length; i < size; prop = props[++i]) {
-        if (typeof ctx === 'undefined' || ctx === null ||
-            ! Object.prototype.hasOwnProperty.call(ctx, prop)) {
-            return defaultValue;
-        }
-
-        ctx = ctx[prop];
-    }
-
-    return ctx;
-}
-
-/**
- * @param {*} context
- * @param {String} [path]
- * @returns {Boolean} `true` if property exists
- */
-function has(context, path) {
-    if (typeof path === 'undefined' || path === '') {
-        return context;
-    }
-
-    var props = path.split('.'),
-        prop = props[0],
-        i, size,
-        ctx = context;
-
-    for (i = 0, size = props.length; i < size; prop = props[++i]) {
-        if (typeof ctx === 'undefined' || ctx === null ||
-            ! Object.prototype.hasOwnProperty.call(ctx, prop)) {
-            return false;
-        }
-
-        ctx = ctx[prop];
-    }
-
-    return true;
-}
-
-/**
- * @param {String} path to property
- * @param {*} value
- * @param {PropertyCheck} check value description
- * @throws {LusterConfigurationError} if property check has been failed
- */
-function checkProperty(path, value, check) {
-    var type = typeOf(value),
-        allowedTypes;
-
-    // required property
-    if (type === 'undefined') {
-        if (check.required) {
-            throw LusterConfigurationError.createError(
-                LusterConfigurationError.CODES.PROP_REQUIRED,
-                { property: path });
-        } else {
-            return;
-        }
-    }
-
-    // allowed types
-    allowedTypes = check.type && [].concat(check.type);
-    if (allowedTypes && allowedTypes.indexOf(type) === -1) {
-        throw LusterConfigurationError.createError(
-            LusterConfigurationError.CODES.PROP_TYPE_CHECK_FAILED,
-            {
-                property: path,
-                type: type,
-                expected: allowedTypes.join(' or ')
-            });
-    }
-}
-
-/**
- * Validate configuration object using descriptions from CHECKS const
- * @param {Object} conf configuration object
- * @returns {Number} of failed checks
- */
-function check(conf) {
-    var failedChecks = 0;
-
-    Object
-        .keys(CHECKS)
-        .forEach(function(path) {
-            // @todo avoid try..catch
-            try {
-                checkProperty(path, get(conf, path), CHECKS[path]);
-            } catch (error) {
-                LusterConfigurationError.ensureError(error).log();
-                ++failedChecks;
-            }
-        });
-
-    return failedChecks;
-}
-
-/**
- * Override config properties using `LUSTER_CONF` environment variable.
- *
- * @description
- *      LUSTER_CONF='PATH=VALUE;...'
- *
- *      ; – properties separator;
- *      = – property and value separator;
- *      PATH – property path;
- *      VALUE – property value, JSON.parse applied to it,
- *          if JSON.parse failed, then value used as string.
- *          You MUST quote a string if it contains semicolon.
- *
- *      Spaces between PATH, "=", ";" and VALUE are insignificant.
- *
- * @example
- *      LUSTER_CONF='server.port=8080'
- *        # { server: { port: 8080 } }
- *
- *      LUSTER_CONF='app=./worker_debug.js; workers=1'
- *        # { app: "./worker_debug.js", workers : 1 }
- *
- *      LUSTER_CONF='logStream='
- *        # remove option "logStream"
- *
- *      LUSTER_CONF='server={"port":8080}'
- *        # { server: { port: 8080 } }
- *
- * @param {Object} config
- * @throws {LusterConfigurationError} if you trying to
- *      set property of atomic property, for example,
- *      error will be thrown if you have property
- *      `extensions.sample.x = 10` in the configuration and
- *      environment variable `LUSTER_EXTENSIONS_SAMPLE_X_Y=5`
- */
-function applyEnvironment(config) {
-    if ( ! process.env.LUSTER_CONF) {
-        return;
-    }
-
-    function parseProp(prop) {
-        var delimeterPos = prop.indexOf('='),
-            propPath,
-            propValue;
-
-        if (delimeterPos === 0 || delimeterPos === -1) {
-            return;
-        }
-
-        propPath = prop.substr(0, delimeterPos).trim();
-        propValue = prop.substr(delimeterPos + 1).trim();
-
-        if (propValue === '') {
-            propValue = undefined;
-        } else {
-            try {
-                // try to parse propValue as JSON,
-                // if parsing failed use raw `propValue` as string
-                propValue = JSON.parse(propValue);
-            } catch(error) { // eslint-disable-line no-empty
-            }
-        }
-
-        set(config, propPath, propValue);
-    }
-
-    var conf = process.env.LUSTER_CONF,
-        lastSeparator = -1,
-        i = 0,
-        openQuote = false;
-
-    while (conf.length > i++) {
-        switch (conf[i]) {
-        case '"' :
-            openQuote = ! openQuote;
-            break;
-        case ';' :
-            if ( ! openQuote) {
-                parseProp(conf.substring(lastSeparator + 1, i));
-                lastSeparator = i;
-            }
-        }
-    }
-
-    if (lastSeparator < conf.length) {
-        parseProp(conf.substring(lastSeparator + 1));
-    }
-}
-
-/**
- * @constructor
- * @class Configuration
- */
-function Configuration(config, basedir) {
-    /** @private */
-    this._resolveBaseDir = basedir || process.cwd();
-
-    Object
-        .keys(config)
-        .forEach(function(propName) {
-            this[propName] = config[propName];
-        }, this);
-}
-
-/**
- * @param {String} path
- * @param {*} [defaultValue]
- * @returns {*}
- * @see get
- * @public
- */
-Configuration.prototype.get = function(path, defaultValue) {
-    return get(this, path, defaultValue);
-};
-
-/**
- * @param {String} path
- * @returns {Boolean}
- * @see has
- * @public
- */
-Configuration.prototype.has = function(path) {
-    return has(this, path);
-};
-
-/**
- * Shortcut for `Object.keys(c.get('some.obj.prop', {}))`
- * @param {String} [path]
- * @returns {String[]} keys of object property by path or
- *      empty array if property doesn't exists or not an object
- * @public
- */
-Configuration.prototype.getKeys = function(path) {
-    var obj = get(this, path);
-
-    if (typeOf(obj) !== 'object') {
-        return [];
-    } else {
-        return Object.keys(obj);
-    }
-};
-
-/**
- * Shortcut for `path.resolve(process.cwd(), c.get(path, 'default.file'))`
- * @param {String} propPath
- * @param {String} [defaultPath]
- * @returns {String} absolute path
- * @public
- */
-Configuration.prototype.resolve = function(propPath, defaultPath) {
-    return path.resolve(
-        this._resolveBaseDir,
-        get(this, propPath, defaultPath));
-};
-
-/**
- * @constructor
- * @class Configurable
- * @augments EventEmitterEx
- */
-Configurable = EventEmitterEx.create();
-
-/**
- * base directory for Configuration#resolve method
- * @private
- * @static
- * @type {String}
- */
-Configurable.prototype._resolveBaseDir = process.cwd();
-
-/**
- * create Configuration instance from plain object
- * @param {Object} config
- * @returns {Configuration|*} Configuration instance if `config` is object or `config` itself in other case
- * @public
- */
-Configurable.prototype.extendConfig = function(config) {
-    return typeOf(config) === 'object' ?
-        new Configuration(config, this._resolveBaseDir) :
-        config;
-};
-
-/**
- * @event Configurable#configured
- */
-
-/**
- * @fires Configurable#configured
- * @param {Object} config
- * @param {Boolean} [applyEnv=true]
- * @param {String} [basedir=process.cwd()] for Configuration#resolve relative paths
- * @returns {Configurable} this
- * @throws {LusterConfigurationError} if configuration check failed (check errors will be logged to STDERR)
- * @public
- */
-Configurable.prototype.configure = function(config, applyEnv, basedir) {
-    if (typeof applyEnv === 'undefined' || applyEnv) {
-        // @todo may be create a deep copy and do not modify origin?
-        applyEnvironment(config);
-    }
-
-    if (basedir) {
-        /** @private */
-        this._resolveBaseDir = basedir;
-    }
-
-    if (check(config) > 0) {
-        this.emit('error',
-            LusterConfigurationError.createError(
-                LusterConfigurationError.CODES.CONFIGURATION_CHECK_FAILED));
-    } else {
-        /** @public */
-        this.config = this.extendConfig(config);
-
-        // hack to tweak underlying EventEmitter max listeners
-        // if your luster-based app extensively use luster events
-        this.setMaxListeners(this.config.get('maxEventListeners', 100));
-
-        this.emit('configured');
-    }
-
-    return this;
-};
-
-module.exports = Configurable;

New alerts

New author

Supply chain risk

A new npm collaborator published a version of the package for the first time. New collaborators are usually benign additions to a project, but do indicate a change to the security surface area of a package.

Found 1 instance in 1 package

Dynamic require

Supply chain risk

Dynamic require can indicate the package is performing dangerous or unsafe dynamic code execution.

Found 1 instance in 1 package

Environment variable access

Supply chain risk

Package accesses environment variables, which may be a sign of credential stuffing or data theft.

Found 3 instances in 1 package

Filesystem access

Supply chain risk

Accesses the file system, and could potentially read sensitive data.

Found 1 instance in 1 package

Long strings

Supply chain risk

Contains long string literals, which may be a sign of obfuscated or packed code.

Found 1 instance in 1 package

Fixed alerts

Dynamic require

Supply chain risk

Dynamic require can indicate the package is performing dangerous or unsafe dynamic code execution.

Found 1 instance in 1 package

Environment variable access

Supply chain risk

Package accesses environment variables, which may be a sign of credential stuffing or data theft.

Found 2 instances in 1 package

Filesystem access

Supply chain risk

Accesses the file system, and could potentially read sensitive data.

Found 1 instance in 1 package

Long strings

Supply chain risk

Contains long string literals, which may be a sign of obfuscated or packed code.

Found 1 instance in 1 package

Minified code

Quality

This package contains minified code. This may be harmless in some cases where minified code is included in packaged libraries, however packages on npm should not minify code.

Found 1 instance in 1 package

Improved metrics

Number of low quality alerts

1

-50%

Number of low supply chain risk alerts

12

-7.69%

Worsened metrics

Total package byte prevSize

82041

-58.81%

Number of package files

19

-32.14%

Lines of code

2139

-15.55%

Number of medium supply chain risk alerts

1

Infinity%

No dependency changes