1522 lines
47 KiB
JavaScript
1522 lines
47 KiB
JavaScript
|
// config.js (c) 2010-2022 Loren West and other contributors
|
||
|
// May be freely distributed under the MIT license.
|
||
|
// For further details and documentation:
|
||
|
// http://lorenwest.github.com/node-config
|
||
|
|
||
|
// Dependencies
|
||
|
var DeferredConfig = require('../defer').DeferredConfig,
|
||
|
RawConfig = require('../raw').RawConfig,
|
||
|
Parser = require('../parser'),
|
||
|
Utils = require('util'),
|
||
|
Path = require('path'),
|
||
|
FileSystem = require('fs');
|
||
|
|
||
|
// Static members
|
||
|
var DEFAULT_CLONE_DEPTH = 20,
|
||
|
CONFIG_DIR, NODE_ENV, APP_INSTANCE,
|
||
|
CONFIG_SKIP_GITCRYPT, NODE_ENV_VAR_NAME,
|
||
|
NODE_CONFIG_PARSER,
|
||
|
env = {},
|
||
|
configSources = [], // Configuration sources - array of {name, original, parsed}
|
||
|
checkMutability = true, // Check for mutability/immutability on first get
|
||
|
gitCryptTestRegex = /^.GITCRYPT/; // regular expression to test for gitcrypt files.
|
||
|
|
||
|
/**
|
||
|
* <p>Application Configurations</p>
|
||
|
*
|
||
|
* <p>
|
||
|
* The config module exports a singleton object representing all
|
||
|
* configurations for this application deployment.
|
||
|
* </p>
|
||
|
*
|
||
|
* <p>
|
||
|
* Application configurations are stored in files within the config directory
|
||
|
* of your application. The default configuration file is loaded, followed
|
||
|
* by files specific to the deployment type (development, testing, staging,
|
||
|
* production, etc.).
|
||
|
* </p>
|
||
|
*
|
||
|
* <p>
|
||
|
* For example, with the following config/default.yaml file:
|
||
|
* </p>
|
||
|
*
|
||
|
* <pre>
|
||
|
* ...
|
||
|
* customer:
|
||
|
* initialCredit: 500
|
||
|
* db:
|
||
|
* name: customer
|
||
|
* port: 5984
|
||
|
* ...
|
||
|
* </pre>
|
||
|
*
|
||
|
* <p>
|
||
|
* The following code loads the customer section into the CONFIG variable:
|
||
|
* <p>
|
||
|
*
|
||
|
* <pre>
|
||
|
* var CONFIG = require('config').customer;
|
||
|
* ...
|
||
|
* newCustomer.creditLimit = CONFIG.initialCredit;
|
||
|
* database.open(CONFIG.db.name, CONFIG.db.port);
|
||
|
* ...
|
||
|
* </pre>
|
||
|
*
|
||
|
* @module config
|
||
|
* @class Config
|
||
|
*/
|
||
|
|
||
|
/**
|
||
|
* <p>Get the configuration object.</p>
|
||
|
*
|
||
|
* <p>
|
||
|
* The configuration object is a shared singleton object within the application,
|
||
|
* attained by calling require('config').
|
||
|
* </p>
|
||
|
*
|
||
|
* <p>
|
||
|
* Usually you'll specify a CONFIG variable at the top of your .js file
|
||
|
* for file/module scope. If you want the root of the object, you can do this:
|
||
|
* </p>
|
||
|
* <pre>
|
||
|
* var CONFIG = require('config');
|
||
|
* </pre>
|
||
|
*
|
||
|
* <p>
|
||
|
* Sometimes you only care about a specific sub-object within the CONFIG
|
||
|
* object. In that case you could do this at the top of your file:
|
||
|
* </p>
|
||
|
* <pre>
|
||
|
* var CONFIG = require('config').customer;
|
||
|
* or
|
||
|
* var CUSTOMER_CONFIG = require('config').customer;
|
||
|
* </pre>
|
||
|
*
|
||
|
* <script type="text/javascript">
|
||
|
* document.getElementById("showProtected").style.display = "block";
|
||
|
* </script>
|
||
|
*
|
||
|
* @method constructor
|
||
|
* @return CONFIG {object} - The top level configuration object
|
||
|
*/
|
||
|
var Config = function() {
|
||
|
var t = this;
|
||
|
|
||
|
// Bind all utility functions to this
|
||
|
for (var fnName in util) {
|
||
|
if (typeof util[fnName] === 'function') {
|
||
|
util[fnName] = util[fnName].bind(t);
|
||
|
}
|
||
|
}
|
||
|
|
||
|
// Merge configurations into this
|
||
|
util.extendDeep(t, util.loadFileConfigs());
|
||
|
util.attachProtoDeep(t);
|
||
|
|
||
|
// Perform strictness checks and possibly throw an exception.
|
||
|
util.runStrictnessChecks(t);
|
||
|
};
|
||
|
|
||
|
/**
|
||
|
* Utilities are under the util namespace vs. at the top level
|
||
|
*/
|
||
|
var util = Config.prototype.util = {};
|
||
|
|
||
|
/**
|
||
|
* Underlying get mechanism
|
||
|
*
|
||
|
* @private
|
||
|
* @method getImpl
|
||
|
* @param object {object} - Object to get the property for
|
||
|
* @param property {string|string[]} - The property name to get (as an array or '.' delimited string)
|
||
|
* @return value {*} - Property value, including undefined if not defined.
|
||
|
*/
|
||
|
var getImpl= function(object, property) {
|
||
|
var t = this,
|
||
|
elems = Array.isArray(property) ? property : property.split('.'),
|
||
|
name = elems[0],
|
||
|
value = object[name];
|
||
|
if (elems.length <= 1) {
|
||
|
return value;
|
||
|
}
|
||
|
// Note that typeof null === 'object'
|
||
|
if (value === null || typeof value !== 'object') {
|
||
|
return undefined;
|
||
|
}
|
||
|
return getImpl(value, elems.slice(1));
|
||
|
};
|
||
|
|
||
|
/**
|
||
|
* <p>Get a configuration value</p>
|
||
|
*
|
||
|
* <p>
|
||
|
* This will return the specified property value, throwing an exception if the
|
||
|
* configuration isn't defined. It is used to assure configurations are defined
|
||
|
* before being used, and to prevent typos.
|
||
|
* </p>
|
||
|
*
|
||
|
* @method get
|
||
|
* @param property {string} - The configuration property to get. Can include '.' sub-properties.
|
||
|
* @return value {*} - The property value
|
||
|
*/
|
||
|
Config.prototype.get = function(property) {
|
||
|
if(property === null || property === undefined){
|
||
|
throw new Error("Calling config.get with null or undefined argument");
|
||
|
}
|
||
|
|
||
|
// Make configurations immutable after first get (unless disabled)
|
||
|
if (checkMutability) {
|
||
|
if (!util.initParam('ALLOW_CONFIG_MUTATIONS', false)) {
|
||
|
util.makeImmutable(config);
|
||
|
}
|
||
|
checkMutability = false;
|
||
|
}
|
||
|
var t = this,
|
||
|
value = getImpl(t, property);
|
||
|
|
||
|
// Produce an exception if the property doesn't exist
|
||
|
if (value === undefined) {
|
||
|
throw new Error('Configuration property "' + property + '" is not defined');
|
||
|
}
|
||
|
|
||
|
// Return the value
|
||
|
return value;
|
||
|
};
|
||
|
|
||
|
/**
|
||
|
* Test that a configuration parameter exists
|
||
|
*
|
||
|
* <pre>
|
||
|
* var config = require('config');
|
||
|
* if (config.has('customer.dbName')) {
|
||
|
* console.log('Customer database name: ' + config.customer.dbName);
|
||
|
* }
|
||
|
* </pre>
|
||
|
*
|
||
|
* @method has
|
||
|
* @param property {string} - The configuration property to test. Can include '.' sub-properties.
|
||
|
* @return isPresent {boolean} - True if the property is defined, false if not defined.
|
||
|
*/
|
||
|
Config.prototype.has = function(property) {
|
||
|
// While get() throws an exception for undefined input, has() is designed to test validity, so false is appropriate
|
||
|
if(property === null || property === undefined){
|
||
|
return false;
|
||
|
}
|
||
|
var t = this;
|
||
|
return (getImpl(t, property) !== undefined);
|
||
|
};
|
||
|
|
||
|
/**
|
||
|
* <p>
|
||
|
* Set default configurations for a node.js module.
|
||
|
* </p>
|
||
|
*
|
||
|
* <p>
|
||
|
* This allows module developers to attach their configurations onto the
|
||
|
* default configuration object so they can be configured by the consumers
|
||
|
* of the module.
|
||
|
* </p>
|
||
|
*
|
||
|
* <p>Using the function within your module:</p>
|
||
|
* <pre>
|
||
|
* var CONFIG = require("config");
|
||
|
* CONFIG.util.setModuleDefaults("MyModule", {
|
||
|
* templateName: "t-50",
|
||
|
* colorScheme: "green"
|
||
|
* });
|
||
|
* <br>
|
||
|
* // Template name may be overridden by application config files
|
||
|
* console.log("Template: " + CONFIG.MyModule.templateName);
|
||
|
* </pre>
|
||
|
*
|
||
|
* <p>
|
||
|
* The above example results in a "MyModule" element of the configuration
|
||
|
* object, containing an object with the specified default values.
|
||
|
* </p>
|
||
|
*
|
||
|
* @method setModuleDefaults
|
||
|
* @param moduleName {string} - Name of your module.
|
||
|
* @param defaultProperties {object} - The default module configuration.
|
||
|
* @return moduleConfig {object} - The module level configuration object.
|
||
|
*/
|
||
|
util.setModuleDefaults = function (moduleName, defaultProperties) {
|
||
|
|
||
|
// Copy the properties into a new object
|
||
|
var t = this,
|
||
|
moduleConfig = util.cloneDeep(defaultProperties);
|
||
|
|
||
|
// Set module defaults into the first sources element
|
||
|
if (configSources.length === 0 || configSources[0].name !== 'Module Defaults') {
|
||
|
configSources.splice(0, 0, {
|
||
|
name: 'Module Defaults',
|
||
|
parsed: {}
|
||
|
});
|
||
|
}
|
||
|
util.setPath(configSources[0].parsed, moduleName.split('.'), {});
|
||
|
util.extendDeep(getImpl(configSources[0].parsed, moduleName), defaultProperties);
|
||
|
|
||
|
// Create a top level config for this module if it doesn't exist
|
||
|
util.setPath(t, moduleName.split('.'), getImpl(t, moduleName) || {});
|
||
|
|
||
|
// Extend local configurations into the module config
|
||
|
util.extendDeep(moduleConfig, getImpl(t, moduleName));
|
||
|
|
||
|
// Merge the extended configs without replacing the original
|
||
|
util.extendDeep(getImpl(t, moduleName), moduleConfig);
|
||
|
|
||
|
// reset the mutability check for "config.get" method.
|
||
|
// we are not making t[moduleName] immutable immediately,
|
||
|
// since there might be more modifications before the first config.get
|
||
|
if (!util.initParam('ALLOW_CONFIG_MUTATIONS', false)) {
|
||
|
checkMutability = true;
|
||
|
}
|
||
|
|
||
|
// Attach handlers & watchers onto the module config object
|
||
|
return util.attachProtoDeep(getImpl(t, moduleName));
|
||
|
};
|
||
|
|
||
|
/**
|
||
|
* <p>Make a configuration property hidden so it doesn't appear when enumerating
|
||
|
* elements of the object.</p>
|
||
|
*
|
||
|
* <p>
|
||
|
* The property still exists and can be read from and written to, but it won't
|
||
|
* show up in for ... in loops, Object.keys(), or JSON.stringify() type methods.
|
||
|
* </p>
|
||
|
*
|
||
|
* <p>
|
||
|
* If the property already exists, it will be made hidden. Otherwise it will
|
||
|
* be created as a hidden property with the specified value.
|
||
|
* </p>
|
||
|
*
|
||
|
* <p><i>
|
||
|
* This method was built for hiding configuration values, but it can be applied
|
||
|
* to <u>any</u> javascript object.
|
||
|
* </i></p>
|
||
|
*
|
||
|
* <p>Example:</p>
|
||
|
* <pre>
|
||
|
* var CONFIG = require('config');
|
||
|
* ...
|
||
|
*
|
||
|
* // Hide the Amazon S3 credentials
|
||
|
* CONFIG.util.makeHidden(CONFIG.amazonS3, 'access_id');
|
||
|
* CONFIG.util.makeHidden(CONFIG.amazonS3, 'secret_key');
|
||
|
* </pre>
|
||
|
*
|
||
|
* @method makeHidden
|
||
|
* @param object {object} - The object to make a hidden property into.
|
||
|
* @param property {string} - The name of the property to make hidden.
|
||
|
* @param value {*} - (optional) Set the property value to this (otherwise leave alone)
|
||
|
* @return object {object} - The original object is returned - for chaining.
|
||
|
*/
|
||
|
util.makeHidden = function(object, property, value) {
|
||
|
|
||
|
// If the new value isn't specified, just mark the property as hidden
|
||
|
if (typeof value === 'undefined') {
|
||
|
Object.defineProperty(object, property, {
|
||
|
enumerable : false
|
||
|
});
|
||
|
}
|
||
|
// Otherwise set the value and mark it as hidden
|
||
|
else {
|
||
|
Object.defineProperty(object, property, {
|
||
|
value : value,
|
||
|
enumerable : false
|
||
|
});
|
||
|
}
|
||
|
|
||
|
return object;
|
||
|
}
|
||
|
|
||
|
/**
|
||
|
* <p>Make a javascript object property immutable (assuring it cannot be changed
|
||
|
* from the current value).</p>
|
||
|
* <p>
|
||
|
* If the specified property is an object, all attributes of that object are
|
||
|
* made immutable, including properties of contained objects, recursively.
|
||
|
* If a property name isn't supplied, all properties of the object are made
|
||
|
* immutable.
|
||
|
* </p>
|
||
|
* <p>
|
||
|
*
|
||
|
* </p>
|
||
|
* <p>
|
||
|
* New properties can be added to the object and those properties will not be
|
||
|
* immutable unless this method is called on those new properties.
|
||
|
* </p>
|
||
|
* <p>
|
||
|
* This operation cannot be undone.
|
||
|
* </p>
|
||
|
*
|
||
|
* <p>Example:</p>
|
||
|
* <pre>
|
||
|
* var config = require('config');
|
||
|
* var myObject = {hello:'world'};
|
||
|
* config.util.makeImmutable(myObject);
|
||
|
* </pre>
|
||
|
*
|
||
|
* @method makeImmutable
|
||
|
* @param object {object} - The object to specify immutable properties for
|
||
|
* @param [property] {string | [string]} - The name of the property (or array of names) to make immutable.
|
||
|
* If not provided, all owned properties of the object are made immutable.
|
||
|
* @param [value] {* | [*]} - Property value (or array of values) to set
|
||
|
* the property to before making immutable. Only used when setting a single
|
||
|
* property. Retained for backward compatibility.
|
||
|
* @return object {object} - The original object is returned - for chaining.
|
||
|
*/
|
||
|
util.makeImmutable = function(object, property, value) {
|
||
|
if (Buffer.isBuffer(object)) {
|
||
|
return object;
|
||
|
}
|
||
|
var properties = null;
|
||
|
|
||
|
// Backwards compatibility mode where property/value can be specified
|
||
|
if (typeof property === 'string') {
|
||
|
return Object.defineProperty(object, property, {
|
||
|
value : (typeof value === 'undefined') ? object[property] : value,
|
||
|
writable : false,
|
||
|
configurable: false
|
||
|
});
|
||
|
}
|
||
|
|
||
|
// Get the list of properties to work with
|
||
|
if (Array.isArray(property)) {
|
||
|
properties = property;
|
||
|
}
|
||
|
else {
|
||
|
properties = Object.keys(object);
|
||
|
}
|
||
|
|
||
|
// Process each property
|
||
|
for (var i = 0; i < properties.length; i++) {
|
||
|
var propertyName = properties[i],
|
||
|
value = object[propertyName];
|
||
|
|
||
|
if (value instanceof RawConfig) {
|
||
|
Object.defineProperty(object, propertyName, {
|
||
|
value: value.resolve(),
|
||
|
writable: false,
|
||
|
configurable: false
|
||
|
});
|
||
|
} else if (Array.isArray(value)) {
|
||
|
// Ensure object items of this array are also immutable.
|
||
|
value.forEach((item, index) => { if (util.isObject(item) || Array.isArray(item)) util.makeImmutable(item) })
|
||
|
|
||
|
Object.defineProperty(object, propertyName, {
|
||
|
value: Object.freeze(value)
|
||
|
});
|
||
|
} else {
|
||
|
// Call recursively if an object.
|
||
|
if (util.isObject(value)) {
|
||
|
// Create a proxy, to capture user updates of configuration options, and throw an exception for awareness, as per:
|
||
|
// https://github.com/lorenwest/node-config/issues/514
|
||
|
value = new Proxy(util.makeImmutable(value), {
|
||
|
set (target, name) {
|
||
|
const message = (Reflect.has(target, name) ? 'update' : 'add');
|
||
|
// Notify the user.
|
||
|
throw Error(`Can not ${message} runtime configuration property: "${name}". Configuration objects are immutable unless ALLOW_CONFIG_MUTATIONS is set.`)
|
||
|
}
|
||
|
})
|
||
|
}
|
||
|
|
||
|
Object.defineProperty(object, propertyName, {
|
||
|
value: value,
|
||
|
writable : false,
|
||
|
configurable: false
|
||
|
});
|
||
|
|
||
|
// Ensure new properties can not be added, as per:
|
||
|
// https://github.com/lorenwest/node-config/issues/505
|
||
|
Object.preventExtensions(object[propertyName])
|
||
|
}
|
||
|
}
|
||
|
|
||
|
return object;
|
||
|
};
|
||
|
|
||
|
/**
|
||
|
* Return the sources for the configurations
|
||
|
*
|
||
|
* <p>
|
||
|
* All sources for configurations are stored in an array of objects containing
|
||
|
* the source name (usually the filename), the original source (as a string),
|
||
|
* and the parsed source as an object.
|
||
|
* </p>
|
||
|
*
|
||
|
* @method getConfigSources
|
||
|
* @return configSources {Array[Object]} - An array of objects containing
|
||
|
* name, original, and parsed elements
|
||
|
*/
|
||
|
util.getConfigSources = function() {
|
||
|
var t = this;
|
||
|
return configSources.slice(0);
|
||
|
};
|
||
|
|
||
|
/**
|
||
|
* Looks into an options object for a specific attribute
|
||
|
*
|
||
|
* <p>
|
||
|
* This method looks into the options object, and if an attribute is defined, returns it,
|
||
|
* and if not, returns the default value
|
||
|
* </p>
|
||
|
*
|
||
|
* @method getOption
|
||
|
* @param options {Object | undefined} the options object
|
||
|
* @param optionName {string} the attribute name to look for
|
||
|
* @param defaultValue { any } the default in case the options object is empty, or the attribute does not exist.
|
||
|
* @return options[optionName] if defined, defaultValue if not.
|
||
|
*/
|
||
|
util.getOption = function(options, optionName, defaultValue) {
|
||
|
if (options !== undefined && options[optionName] !== undefined){
|
||
|
return options[optionName];
|
||
|
} else {
|
||
|
return defaultValue;
|
||
|
}
|
||
|
};
|
||
|
|
||
|
|
||
|
/**
|
||
|
* Load the individual file configurations.
|
||
|
*
|
||
|
* <p>
|
||
|
* This method builds a map of filename to the configuration object defined
|
||
|
* by the file. The search order is:
|
||
|
* </p>
|
||
|
*
|
||
|
* <pre>
|
||
|
* default.EXT
|
||
|
* (deployment).EXT
|
||
|
* (hostname).EXT
|
||
|
* (hostname)-(deployment).EXT
|
||
|
* local.EXT
|
||
|
* local-(deployment).EXT
|
||
|
* runtime.json
|
||
|
* </pre>
|
||
|
*
|
||
|
* <p>
|
||
|
* EXT can be yml, yaml, coffee, iced, json, cson or js signifying the file type.
|
||
|
* yaml (and yml) is in YAML format, coffee is a coffee-script, iced is iced-coffee-script,
|
||
|
* json is in JSON format, cson is in CSON format, properties is in .properties format
|
||
|
* (http://en.wikipedia.org/wiki/.properties), and js is a javascript executable file that is
|
||
|
* require()'d with module.exports being the config object.
|
||
|
* </p>
|
||
|
*
|
||
|
* <p>
|
||
|
* hostname is the $HOST environment variable (or --HOST command line parameter)
|
||
|
* if set, otherwise the $HOSTNAME environment variable (or --HOSTNAME command
|
||
|
* line parameter) if set, otherwise the hostname found from
|
||
|
* require('os').hostname().
|
||
|
* </p>
|
||
|
*
|
||
|
* <p>
|
||
|
* Once a hostname is found, everything from the first period ('.') onwards
|
||
|
* is removed. For example, abc.example.com becomes abc
|
||
|
* </p>
|
||
|
*
|
||
|
* <p>
|
||
|
* (deployment) is the deployment type, found in the $NODE_ENV environment
|
||
|
* variable (which can be overridden by using $NODE_CONFIG_ENV
|
||
|
* environment variable). Defaults to 'development'.
|
||
|
* </p>
|
||
|
*
|
||
|
* <p>
|
||
|
* The runtime.json file contains configuration changes made at runtime either
|
||
|
* manually, or by the application setting a configuration value.
|
||
|
* </p>
|
||
|
*
|
||
|
* <p>
|
||
|
* If the $NODE_APP_INSTANCE environment variable (or --NODE_APP_INSTANCE
|
||
|
* command line parameter) is set, then files with this appendage will be loaded.
|
||
|
* See the Multiple Application Instances section of the main documentation page
|
||
|
* for more information.
|
||
|
* </p>
|
||
|
*
|
||
|
* @protected
|
||
|
* @method loadFileConfigs
|
||
|
* @param configDir { string | null } the path to the directory containing the configurations to load
|
||
|
* @param options { object | undefined } parsing options. Current supported option: skipConfigSources: true|false
|
||
|
* @return config {Object} The configuration object
|
||
|
*/
|
||
|
util.loadFileConfigs = function(configDir, options) {
|
||
|
|
||
|
// Initialize
|
||
|
var t = this,
|
||
|
config = {};
|
||
|
|
||
|
// Specify variables that can be used to define the environment
|
||
|
var node_env_var_names = ['NODE_CONFIG_ENV', 'NODE_ENV'];
|
||
|
|
||
|
// Loop through the variables to try and set environment
|
||
|
for (const node_env_var_name of node_env_var_names) {
|
||
|
NODE_ENV = util.initParam(node_env_var_name);
|
||
|
if (!!NODE_ENV) {
|
||
|
NODE_ENV_VAR_NAME = node_env_var_name;
|
||
|
break;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
// If we haven't successfully set the environment using the variables, we'll default it
|
||
|
if (!NODE_ENV) {
|
||
|
NODE_ENV = 'development';
|
||
|
}
|
||
|
|
||
|
node_env_var_names.forEach(node_env_var_name => {
|
||
|
env[node_env_var_name] = NODE_ENV;
|
||
|
});
|
||
|
|
||
|
// Split files name, for loading multiple files.
|
||
|
NODE_ENV = NODE_ENV.split(',');
|
||
|
|
||
|
var dir = configDir || util.initParam('NODE_CONFIG_DIR', Path.join( process.cwd(), 'config') );
|
||
|
dir = _toAbsolutePath(dir);
|
||
|
|
||
|
APP_INSTANCE = util.initParam('NODE_APP_INSTANCE');
|
||
|
CONFIG_SKIP_GITCRYPT = util.initParam('CONFIG_SKIP_GITCRYPT');
|
||
|
|
||
|
// This is for backward compatibility
|
||
|
var runtimeFilename = util.initParam('NODE_CONFIG_RUNTIME_JSON', Path.join(dir , 'runtime.json') );
|
||
|
|
||
|
NODE_CONFIG_PARSER = util.initParam('NODE_CONFIG_PARSER');
|
||
|
if (NODE_CONFIG_PARSER) {
|
||
|
try {
|
||
|
var parserModule = Path.isAbsolute(NODE_CONFIG_PARSER)
|
||
|
? NODE_CONFIG_PARSER
|
||
|
: Path.join(dir, NODE_CONFIG_PARSER);
|
||
|
Parser = require(parserModule);
|
||
|
}
|
||
|
catch (e) {
|
||
|
console.warn('Failed to load config parser from ' + NODE_CONFIG_PARSER);
|
||
|
console.log(e);
|
||
|
}
|
||
|
}
|
||
|
|
||
|
var HOST = util.initParam('HOST');
|
||
|
var HOSTNAME = util.initParam('HOSTNAME');
|
||
|
|
||
|
// Determine the host name from the OS module, $HOST, or $HOSTNAME
|
||
|
// Remove any . appendages, and default to null if not set
|
||
|
try {
|
||
|
var hostName = HOST || HOSTNAME;
|
||
|
|
||
|
if (!hostName) {
|
||
|
var OS = require('os');
|
||
|
hostName = OS.hostname();
|
||
|
}
|
||
|
} catch (e) {
|
||
|
hostName = '';
|
||
|
}
|
||
|
|
||
|
// Store the hostname that won.
|
||
|
env.HOSTNAME = hostName;
|
||
|
|
||
|
// Read each file in turn
|
||
|
var baseNames = ['default'].concat(NODE_ENV);
|
||
|
|
||
|
// #236: Also add full hostname when they are different.
|
||
|
if (hostName) {
|
||
|
var firstDomain = hostName.split('.')[0];
|
||
|
|
||
|
NODE_ENV.forEach(function(env) {
|
||
|
// Backward compatibility
|
||
|
baseNames.push(firstDomain, firstDomain + '-' + env);
|
||
|
|
||
|
// Add full hostname when it is not the same
|
||
|
if (hostName !== firstDomain) {
|
||
|
baseNames.push(hostName, hostName + '-' + env);
|
||
|
}
|
||
|
});
|
||
|
}
|
||
|
|
||
|
NODE_ENV.forEach(function(env) {
|
||
|
baseNames.push('local', 'local-' + env);
|
||
|
});
|
||
|
|
||
|
var allowedFiles = {};
|
||
|
var resolutionIndex = 1;
|
||
|
var extNames = Parser.getFilesOrder();
|
||
|
baseNames.forEach(function(baseName) {
|
||
|
extNames.forEach(function(extName) {
|
||
|
allowedFiles[baseName + '.' + extName] = resolutionIndex++;
|
||
|
if (APP_INSTANCE) {
|
||
|
allowedFiles[baseName + '-' + APP_INSTANCE + '.' + extName] = resolutionIndex++;
|
||
|
}
|
||
|
});
|
||
|
});
|
||
|
|
||
|
var locatedFiles = util.locateMatchingFiles(dir, allowedFiles);
|
||
|
locatedFiles.forEach(function(fullFilename) {
|
||
|
var configObj = util.parseFile(fullFilename, options);
|
||
|
if (configObj) {
|
||
|
util.extendDeep(config, configObj);
|
||
|
}
|
||
|
});
|
||
|
|
||
|
// Override configurations from the $NODE_CONFIG environment variable
|
||
|
// NODE_CONFIG only applies to the base config
|
||
|
if (!configDir) {
|
||
|
var envConfig = {};
|
||
|
|
||
|
CONFIG_DIR = dir;
|
||
|
|
||
|
if (process.env.NODE_CONFIG) {
|
||
|
try {
|
||
|
envConfig = JSON.parse(process.env.NODE_CONFIG);
|
||
|
} catch(e) {
|
||
|
console.error('The $NODE_CONFIG environment variable is malformed JSON');
|
||
|
}
|
||
|
util.extendDeep(config, envConfig);
|
||
|
var skipConfigSources = util.getOption(options,'skipConfigSources', false);
|
||
|
if (!skipConfigSources){
|
||
|
configSources.push({
|
||
|
name: "$NODE_CONFIG",
|
||
|
parsed: envConfig,
|
||
|
});
|
||
|
}
|
||
|
}
|
||
|
|
||
|
// Override configurations from the --NODE_CONFIG command line
|
||
|
var cmdLineConfig = util.getCmdLineArg('NODE_CONFIG');
|
||
|
if (cmdLineConfig) {
|
||
|
try {
|
||
|
cmdLineConfig = JSON.parse(cmdLineConfig);
|
||
|
} catch(e) {
|
||
|
console.error('The --NODE_CONFIG={json} command line argument is malformed JSON');
|
||
|
}
|
||
|
util.extendDeep(config, cmdLineConfig);
|
||
|
var skipConfigSources = util.getOption(options,'skipConfigSources', false);
|
||
|
if (!skipConfigSources){
|
||
|
configSources.push({
|
||
|
name: "--NODE_CONFIG argument",
|
||
|
parsed: cmdLineConfig,
|
||
|
});
|
||
|
}
|
||
|
}
|
||
|
|
||
|
// Place the mixed NODE_CONFIG into the environment
|
||
|
env['NODE_CONFIG'] = JSON.stringify(util.extendDeep(envConfig, cmdLineConfig, {}));
|
||
|
}
|
||
|
|
||
|
// Override with environment variables if there is a custom-environment-variables.EXT mapping file
|
||
|
var customEnvVars = util.getCustomEnvVars(dir, extNames);
|
||
|
util.extendDeep(config, customEnvVars);
|
||
|
|
||
|
// Extend the original config with the contents of runtime.json (backwards compatibility)
|
||
|
var runtimeJson = util.parseFile(runtimeFilename) || {};
|
||
|
util.extendDeep(config, runtimeJson);
|
||
|
|
||
|
util.resolveDeferredConfigs(config);
|
||
|
|
||
|
// Return the configuration object
|
||
|
return config;
|
||
|
};
|
||
|
|
||
|
/**
|
||
|
* Return a list of fullFilenames who exists in allowedFiles
|
||
|
* Ordered according to allowedFiles argument specifications
|
||
|
*
|
||
|
* @protected
|
||
|
* @method locateMatchingFiles
|
||
|
* @param configDirs {string} the config dir, or multiple dirs separated by a column (:)
|
||
|
* @param allowedFiles {object} an object. keys and supported filenames
|
||
|
* and values are the position in the resolution order
|
||
|
* @returns {string[]} fullFilenames - path + filename
|
||
|
*/
|
||
|
util.locateMatchingFiles = function(configDirs, allowedFiles) {
|
||
|
return configDirs.split(Path.delimiter)
|
||
|
.reduce(function(files, configDir) {
|
||
|
if (configDir) {
|
||
|
configDir = _toAbsolutePath(configDir);
|
||
|
try {
|
||
|
FileSystem.readdirSync(configDir).forEach(function(file) {
|
||
|
if (allowedFiles[file]) {
|
||
|
files.push([allowedFiles[file], Path.join(configDir, file)]);
|
||
|
}
|
||
|
});
|
||
|
}
|
||
|
catch(e) {}
|
||
|
return files;
|
||
|
}
|
||
|
}, [])
|
||
|
.sort(function(a, b) { return a[0] - b[0]; })
|
||
|
.map(function(file) { return file[1]; });
|
||
|
};
|
||
|
|
||
|
// Using basic recursion pattern, find all the deferred values and resolve them.
|
||
|
util.resolveDeferredConfigs = function (config) {
|
||
|
var deferred = [];
|
||
|
|
||
|
function _iterate (prop) {
|
||
|
|
||
|
// We put the properties we are going to look it in an array to keep the order predictable
|
||
|
var propsToSort = [];
|
||
|
|
||
|
// First step is to put the properties of interest in an array
|
||
|
for (var property in prop) {
|
||
|
if (Object.hasOwnProperty.call(prop, property) && prop[property] != null) {
|
||
|
propsToSort.push(property);
|
||
|
}
|
||
|
}
|
||
|
|
||
|
// Second step is to iterate of the elements in a predictable (sorted) order
|
||
|
propsToSort.sort().forEach(function (property) {
|
||
|
if (prop[property].constructor === Object) {
|
||
|
_iterate(prop[property]);
|
||
|
} else if (prop[property].constructor === Array) {
|
||
|
for (var i = 0; i < prop[property].length; i++) {
|
||
|
if (prop[property][i] instanceof DeferredConfig) {
|
||
|
deferred.push(prop[property][i].prepare(config, prop[property], i));
|
||
|
}
|
||
|
else {
|
||
|
_iterate(prop[property][i]);
|
||
|
}
|
||
|
}
|
||
|
} else {
|
||
|
if (prop[property] instanceof DeferredConfig) {
|
||
|
deferred.push(prop[property].prepare(config, prop, property));
|
||
|
}
|
||
|
// else: Nothing to do. Keep the property how it is.
|
||
|
}
|
||
|
});
|
||
|
}
|
||
|
|
||
|
_iterate(config);
|
||
|
|
||
|
deferred.forEach(function (defer) { defer.resolve(); });
|
||
|
};
|
||
|
|
||
|
/**
|
||
|
* Parse and return the specified configuration file.
|
||
|
*
|
||
|
* If the file exists in the application config directory, it will
|
||
|
* parse and return it as a JavaScript object.
|
||
|
*
|
||
|
* The file extension determines the parser to use.
|
||
|
*
|
||
|
* .js = File to run that has a module.exports containing the config object
|
||
|
* .coffee = File to run that has a module.exports with coffee-script containing the config object
|
||
|
* .iced = File to run that has a module.exports with iced-coffee-script containing the config object
|
||
|
* All other supported file types (yaml, toml, json, cson, hjson, json5, properties, xml)
|
||
|
* are parsed with util.parseString.
|
||
|
*
|
||
|
* If the file doesn't exist, a null will be returned. If the file can't be
|
||
|
* parsed, an exception will be thrown.
|
||
|
*
|
||
|
* This method performs synchronous file operations, and should not be called
|
||
|
* after synchronous module loading.
|
||
|
*
|
||
|
* @protected
|
||
|
* @method parseFile
|
||
|
* @param fullFilename {string} The full file path and name
|
||
|
* @param options { object | undefined } parsing options. Current supported option: skipConfigSources: true|false
|
||
|
* @return configObject {object|null} The configuration object parsed from the file
|
||
|
*/
|
||
|
util.parseFile = function(fullFilename, options) {
|
||
|
var t = this, // Initialize
|
||
|
configObject = null,
|
||
|
fileContent = null,
|
||
|
stat = null;
|
||
|
|
||
|
// Note that all methods here are the Sync versions. This is appropriate during
|
||
|
// module loading (which is a synchronous operation), but not thereafter.
|
||
|
|
||
|
try {
|
||
|
// Try loading the file.
|
||
|
fileContent = FileSystem.readFileSync(fullFilename, 'utf-8');
|
||
|
fileContent = fileContent.replace(/^\uFEFF/, '');
|
||
|
}
|
||
|
catch (e2) {
|
||
|
if (e2.code !== 'ENOENT') {
|
||
|
throw new Error('Config file ' + fullFilename + ' cannot be read. Error code is: '+e2.code
|
||
|
+'. Error message is: '+e2.message);
|
||
|
}
|
||
|
return null; // file doesn't exists
|
||
|
}
|
||
|
|
||
|
// Parse the file based on extension
|
||
|
try {
|
||
|
|
||
|
// skip if it's a gitcrypt file and CONFIG_SKIP_GITCRYPT is true
|
||
|
if (CONFIG_SKIP_GITCRYPT) {
|
||
|
if (gitCryptTestRegex.test(fileContent)) {
|
||
|
console.error('WARNING: ' + fullFilename + ' is a git-crypt file and CONFIG_SKIP_GITCRYPT is set. skipping.');
|
||
|
return null;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
configObject = Parser.parse(fullFilename, fileContent);
|
||
|
}
|
||
|
catch (e3) {
|
||
|
if (gitCryptTestRegex.test(fileContent)) {
|
||
|
console.error('ERROR: ' + fullFilename + ' is a git-crypt file and CONFIG_SKIP_GITCRYPT is not set.');
|
||
|
}
|
||
|
throw new Error("Cannot parse config file: '" + fullFilename + "': " + e3);
|
||
|
}
|
||
|
|
||
|
// Keep track of this configuration sources, including empty ones, unless the skipConfigSources flag is set to true in the options
|
||
|
var skipConfigSources = util.getOption(options,'skipConfigSources', false);
|
||
|
if (typeof configObject === 'object' && !skipConfigSources) {
|
||
|
configSources.push({
|
||
|
name: fullFilename,
|
||
|
original: fileContent,
|
||
|
parsed: configObject,
|
||
|
});
|
||
|
}
|
||
|
|
||
|
return configObject;
|
||
|
};
|
||
|
|
||
|
/**
|
||
|
* Parse and return the specified string with the specified format.
|
||
|
*
|
||
|
* The format determines the parser to use.
|
||
|
*
|
||
|
* json = File is parsed using JSON.parse()
|
||
|
* yaml (or yml) = Parsed with a YAML parser
|
||
|
* toml = Parsed with a TOML parser
|
||
|
* cson = Parsed with a CSON parser
|
||
|
* hjson = Parsed with a HJSON parser
|
||
|
* json5 = Parsed with a JSON5 parser
|
||
|
* properties = Parsed with the 'properties' node package
|
||
|
* xml = Parsed with a XML parser
|
||
|
*
|
||
|
* If the file doesn't exist, a null will be returned. If the file can't be
|
||
|
* parsed, an exception will be thrown.
|
||
|
*
|
||
|
* This method performs synchronous file operations, and should not be called
|
||
|
* after synchronous module loading.
|
||
|
*
|
||
|
* @protected
|
||
|
* @method parseString
|
||
|
* @param content {string} The full content
|
||
|
* @param format {string} The format to be parsed
|
||
|
* @return {configObject} The configuration object parsed from the string
|
||
|
*/
|
||
|
util.parseString = function (content, format) {
|
||
|
var parser = Parser.getParser(format);
|
||
|
if (typeof parser === 'function') {
|
||
|
return parser(null, content);
|
||
|
}
|
||
|
};
|
||
|
|
||
|
/**
|
||
|
* Attach the Config class prototype to all config objects recursively.
|
||
|
*
|
||
|
* <p>
|
||
|
* This allows you to do anything with CONFIG sub-objects as you can do with
|
||
|
* the top-level CONFIG object. It's so you can do this:
|
||
|
* </p>
|
||
|
*
|
||
|
* <pre>
|
||
|
* var CUST_CONFIG = require('config').Customer;
|
||
|
* CUST_CONFIG.get(...)
|
||
|
* </pre>
|
||
|
*
|
||
|
* @protected
|
||
|
* @method attachProtoDeep
|
||
|
* @param toObject
|
||
|
* @param depth
|
||
|
* @return toObject
|
||
|
*/
|
||
|
util.attachProtoDeep = function(toObject, depth) {
|
||
|
if (toObject instanceof RawConfig) {
|
||
|
return toObject;
|
||
|
}
|
||
|
|
||
|
// Recursion detection
|
||
|
var t = this;
|
||
|
depth = (depth === null ? DEFAULT_CLONE_DEPTH : depth);
|
||
|
if (depth < 0) {
|
||
|
return toObject;
|
||
|
}
|
||
|
|
||
|
// Adding Config.prototype methods directly to toObject as hidden properties
|
||
|
// because adding to toObject.__proto__ exposes the function in toObject
|
||
|
for (var fnName in Config.prototype) {
|
||
|
if (!toObject[fnName]) {
|
||
|
util.makeHidden(toObject, fnName, Config.prototype[fnName]);
|
||
|
}
|
||
|
}
|
||
|
|
||
|
// Add prototypes to sub-objects
|
||
|
for (var prop in toObject) {
|
||
|
if (util.isObject(toObject[prop])) {
|
||
|
util.attachProtoDeep(toObject[prop], depth - 1);
|
||
|
}
|
||
|
}
|
||
|
|
||
|
// Return the original object
|
||
|
return toObject;
|
||
|
};
|
||
|
|
||
|
/**
|
||
|
* Return a deep copy of the specified object.
|
||
|
*
|
||
|
* This returns a new object with all elements copied from the specified
|
||
|
* object. Deep copies are made of objects and arrays so you can do anything
|
||
|
* with the returned object without affecting the input object.
|
||
|
*
|
||
|
* @protected
|
||
|
* @method cloneDeep
|
||
|
* @param parent {object} The original object to copy from
|
||
|
* @param [depth=20] {Integer} Maximum depth (default 20)
|
||
|
* @return {object} A new object with the elements copied from the copyFrom object
|
||
|
*
|
||
|
* This method is copied from https://github.com/pvorb/node-clone/blob/17eea36140d61d97a9954c53417d0e04a00525d9/clone.js
|
||
|
*
|
||
|
* Copyright © 2011-2014 Paul Vorbach and contributors.
|
||
|
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
||
|
* of this software and associated documentation files (the “Software”), to deal
|
||
|
* in the Software without restriction, including without limitation the rights
|
||
|
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
|
||
|
* of the Software, and to permit persons to whom the Software is furnished to do so,
|
||
|
* subject to the following conditions: The above copyright notice and this permission
|
||
|
* notice shall be included in all copies or substantial portions of the Software.
|
||
|
*/
|
||
|
util.cloneDeep = function cloneDeep(parent, depth, circular, prototype) {
|
||
|
// maintain two arrays for circular references, where corresponding parents
|
||
|
// and children have the same index
|
||
|
var allParents = [];
|
||
|
var allChildren = [];
|
||
|
|
||
|
var useBuffer = typeof Buffer != 'undefined';
|
||
|
|
||
|
if (typeof circular === 'undefined')
|
||
|
circular = true;
|
||
|
|
||
|
if (typeof depth === 'undefined')
|
||
|
depth = 20;
|
||
|
|
||
|
// recurse this function so we don't reset allParents and allChildren
|
||
|
function _clone(parent, depth) {
|
||
|
// cloning null always returns null
|
||
|
if (parent === null)
|
||
|
return null;
|
||
|
|
||
|
if (depth === 0)
|
||
|
return parent;
|
||
|
|
||
|
var child;
|
||
|
if (typeof parent != 'object') {
|
||
|
return parent;
|
||
|
}
|
||
|
|
||
|
if (Utils.isArray(parent)) {
|
||
|
child = [];
|
||
|
} else if (Utils.isRegExp(parent)) {
|
||
|
child = new RegExp(parent.source, util.getRegExpFlags(parent));
|
||
|
if (parent.lastIndex) child.lastIndex = parent.lastIndex;
|
||
|
} else if (Utils.isDate(parent)) {
|
||
|
child = new Date(parent.getTime());
|
||
|
} else if (useBuffer && Buffer.isBuffer(parent)) {
|
||
|
child = Buffer.alloc(parent.length);
|
||
|
parent.copy(child);
|
||
|
return child;
|
||
|
} else {
|
||
|
if (typeof prototype === 'undefined') child = Object.create(Object.getPrototypeOf(parent));
|
||
|
else child = Object.create(prototype);
|
||
|
}
|
||
|
|
||
|
if (circular) {
|
||
|
var index = allParents.indexOf(parent);
|
||
|
|
||
|
if (index != -1) {
|
||
|
return allChildren[index];
|
||
|
}
|
||
|
allParents.push(parent);
|
||
|
allChildren.push(child);
|
||
|
}
|
||
|
|
||
|
for (var i in parent) {
|
||
|
var propDescriptor = Object.getOwnPropertyDescriptor(parent,i);
|
||
|
var hasGetter = ((propDescriptor !== undefined) && (propDescriptor.get !== undefined));
|
||
|
|
||
|
if (hasGetter){
|
||
|
Object.defineProperty(child,i,propDescriptor);
|
||
|
} else if (util.isPromise(parent[i])) {
|
||
|
child[i] = parent[i];
|
||
|
} else {
|
||
|
child[i] = _clone(parent[i], depth - 1);
|
||
|
}
|
||
|
}
|
||
|
|
||
|
return child;
|
||
|
}
|
||
|
|
||
|
return _clone(parent, depth);
|
||
|
};
|
||
|
|
||
|
/**
|
||
|
* Set objects given a path as a string list
|
||
|
*
|
||
|
* @protected
|
||
|
* @method setPath
|
||
|
* @param object {object} - Object to set the property on
|
||
|
* @param path {array[string]} - Array path to the property
|
||
|
* @param value {*} - value to set, ignoring null
|
||
|
*/
|
||
|
util.setPath = function (object, path, value) {
|
||
|
var nextKey = null;
|
||
|
if (value === null || path.length === 0) {
|
||
|
return;
|
||
|
}
|
||
|
else if (path.length === 1) { // no more keys to make, so set the value
|
||
|
object[path.shift()] = value;
|
||
|
}
|
||
|
else {
|
||
|
nextKey = path.shift();
|
||
|
if (!Object.hasOwnProperty.call(object, nextKey)) {
|
||
|
object[nextKey] = {};
|
||
|
}
|
||
|
util.setPath(object[nextKey], path, value);
|
||
|
}
|
||
|
};
|
||
|
|
||
|
/**
|
||
|
* Create a new object patterned after substitutionMap, where:
|
||
|
* 1. Terminal string values in substitutionMap are used as keys
|
||
|
* 2. To look up values in a key-value store, variables
|
||
|
* 3. And parent keys are created as necessary to retain the structure of substitutionMap.
|
||
|
*
|
||
|
* @protected
|
||
|
* @method substituteDeep
|
||
|
* @param substitutionMap {object} - an object whose terminal (non-subobject) values are strings
|
||
|
* @param variables {object[string:value]} - usually process.env, a flat object used to transform
|
||
|
* terminal values in a copy of substitutionMap.
|
||
|
* @returns {object} - deep copy of substitutionMap with only those paths whose terminal values
|
||
|
* corresponded to a key in `variables`
|
||
|
*/
|
||
|
util.substituteDeep = function (substitutionMap, variables) {
|
||
|
var result = {};
|
||
|
|
||
|
function _substituteVars(map, vars, pathTo) {
|
||
|
for (var prop in map) {
|
||
|
var value = map[prop];
|
||
|
if (typeof(value) === 'string') { // We found a leaf variable name
|
||
|
if (vars[value] !== undefined && vars[value] !== '') { // if the vars provide a value set the value in the result map
|
||
|
util.setPath(result, pathTo.concat(prop), vars[value]);
|
||
|
}
|
||
|
}
|
||
|
else if (util.isObject(value)) { // work on the subtree, giving it a clone of the pathTo
|
||
|
if ('__name' in value && '__format' in value && vars[value.__name] !== undefined && vars[value.__name] !== '') {
|
||
|
try {
|
||
|
var parsedValue = util.parseString(vars[value.__name], value.__format);
|
||
|
} catch(err) {
|
||
|
err.message = '__format parser error in ' + value.__name + ': ' + err.message;
|
||
|
throw err;
|
||
|
}
|
||
|
util.setPath(result, pathTo.concat(prop), parsedValue);
|
||
|
} else {
|
||
|
_substituteVars(value, vars, pathTo.concat(prop));
|
||
|
}
|
||
|
}
|
||
|
else {
|
||
|
msg = "Illegal key type for substitution map at " + pathTo.join('.') + ': ' + typeof(value);
|
||
|
throw Error(msg);
|
||
|
}
|
||
|
}
|
||
|
}
|
||
|
|
||
|
_substituteVars(substitutionMap, variables, []);
|
||
|
return result;
|
||
|
|
||
|
};
|
||
|
|
||
|
/* Map environment variables into the configuration if a mapping file,
|
||
|
* `custom-environment-variables.EXT` exists.
|
||
|
*
|
||
|
* @protected
|
||
|
* @method getCustomEnvVars
|
||
|
* @param configDir {string} - the passed configuration directory
|
||
|
* @param extNames {Array[string]} - acceptable configuration file extension names.
|
||
|
* @returns {object} - mapped environment variables or {} if there are none
|
||
|
*/
|
||
|
util.getCustomEnvVars = function (configDir, extNames) {
|
||
|
var result = {};
|
||
|
var resolutionIndex = 1;
|
||
|
var allowedFiles = {};
|
||
|
extNames.forEach(function (extName) {
|
||
|
allowedFiles['custom-environment-variables' + '.' + extName] = resolutionIndex++;
|
||
|
});
|
||
|
var locatedFiles = util.locateMatchingFiles(configDir, allowedFiles);
|
||
|
locatedFiles.forEach(function (fullFilename) {
|
||
|
var configObj = util.parseFile(fullFilename);
|
||
|
if (configObj) {
|
||
|
var environmentSubstitutions = util.substituteDeep(configObj, process.env);
|
||
|
util.extendDeep(result, environmentSubstitutions);
|
||
|
}
|
||
|
});
|
||
|
return result;
|
||
|
};
|
||
|
|
||
|
/**
|
||
|
* Return true if two objects have equal contents.
|
||
|
*
|
||
|
* @protected
|
||
|
* @method equalsDeep
|
||
|
* @param object1 {object} The object to compare from
|
||
|
* @param object2 {object} The object to compare with
|
||
|
* @param depth {integer} An optional depth to prevent recursion. Default: 20.
|
||
|
* @return {boolean} True if both objects have equivalent contents
|
||
|
*/
|
||
|
util.equalsDeep = function(object1, object2, depth) {
|
||
|
|
||
|
// Recursion detection
|
||
|
var t = this;
|
||
|
depth = (depth === null ? DEFAULT_CLONE_DEPTH : depth);
|
||
|
if (depth < 0) {
|
||
|
return {};
|
||
|
}
|
||
|
|
||
|
// Fast comparisons
|
||
|
if (!object1 || !object2) {
|
||
|
return false;
|
||
|
}
|
||
|
if (object1 === object2) {
|
||
|
return true;
|
||
|
}
|
||
|
if (typeof(object1) != 'object' || typeof(object2) != 'object') {
|
||
|
return false;
|
||
|
}
|
||
|
|
||
|
// They must have the same keys. If their length isn't the same
|
||
|
// then they're not equal. If the keys aren't the same, the value
|
||
|
// comparisons will fail.
|
||
|
if (Object.keys(object1).length != Object.keys(object2).length) {
|
||
|
return false;
|
||
|
}
|
||
|
|
||
|
// Compare the values
|
||
|
for (var prop in object1) {
|
||
|
|
||
|
// Call recursively if an object or array
|
||
|
if (object1[prop] && typeof(object1[prop]) === 'object') {
|
||
|
if (!util.equalsDeep(object1[prop], object2[prop], depth - 1)) {
|
||
|
return false;
|
||
|
}
|
||
|
}
|
||
|
else {
|
||
|
if (object1[prop] !== object2[prop]) {
|
||
|
return false;
|
||
|
}
|
||
|
}
|
||
|
}
|
||
|
|
||
|
// Test passed.
|
||
|
return true;
|
||
|
};
|
||
|
|
||
|
/**
|
||
|
* Returns an object containing all elements that differ between two objects.
|
||
|
* <p>
|
||
|
* This method was designed to be used to create the runtime.json file
|
||
|
* contents, but can be used to get the diffs between any two Javascript objects.
|
||
|
* </p>
|
||
|
* <p>
|
||
|
* It works best when object2 originated by deep copying object1, then
|
||
|
* changes were made to object2, and you want an object that would give you
|
||
|
* the changes made to object1 which resulted in object2.
|
||
|
* </p>
|
||
|
*
|
||
|
* @protected
|
||
|
* @method diffDeep
|
||
|
* @param object1 {object} The base object to compare to
|
||
|
* @param object2 {object} The object to compare with
|
||
|
* @param depth {integer} An optional depth to prevent recursion. Default: 20.
|
||
|
* @return {object} A differential object, which if extended onto object1 would
|
||
|
* result in object2.
|
||
|
*/
|
||
|
util.diffDeep = function(object1, object2, depth) {
|
||
|
|
||
|
// Recursion detection
|
||
|
var t = this, diff = {};
|
||
|
depth = (depth === null ? DEFAULT_CLONE_DEPTH : depth);
|
||
|
if (depth < 0) {
|
||
|
return {};
|
||
|
}
|
||
|
|
||
|
// Process each element from object2, adding any element that's different
|
||
|
// from object 1.
|
||
|
for (var parm in object2) {
|
||
|
var value1 = object1[parm];
|
||
|
var value2 = object2[parm];
|
||
|
if (value1 && value2 && util.isObject(value2)) {
|
||
|
if (!(util.equalsDeep(value1, value2))) {
|
||
|
diff[parm] = util.diffDeep(value1, value2, depth - 1);
|
||
|
}
|
||
|
}
|
||
|
else if (Array.isArray(value1) && Array.isArray(value2)) {
|
||
|
if(!util.equalsDeep(value1, value2)) {
|
||
|
diff[parm] = value2;
|
||
|
}
|
||
|
}
|
||
|
else if (value1 !== value2){
|
||
|
diff[parm] = value2;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
// Return the diff object
|
||
|
return diff;
|
||
|
|
||
|
};
|
||
|
|
||
|
/**
|
||
|
* Extend an object, and any object it contains.
|
||
|
*
|
||
|
* This does not replace deep objects, but dives into them
|
||
|
* replacing individual elements instead.
|
||
|
*
|
||
|
* @protected
|
||
|
* @method extendDeep
|
||
|
* @param mergeInto {object} The object to merge into
|
||
|
* @param mergeFrom... {object...} - Any number of objects to merge from
|
||
|
* @param depth {integer} An optional depth to prevent recursion. Default: 20.
|
||
|
* @return {object} The altered mergeInto object is returned
|
||
|
*/
|
||
|
util.extendDeep = function(mergeInto) {
|
||
|
|
||
|
// Initialize
|
||
|
var t = this;
|
||
|
var vargs = Array.prototype.slice.call(arguments, 1);
|
||
|
var depth = vargs.pop();
|
||
|
if (typeof(depth) != 'number') {
|
||
|
vargs.push(depth);
|
||
|
depth = DEFAULT_CLONE_DEPTH;
|
||
|
}
|
||
|
|
||
|
// Recursion detection
|
||
|
if (depth < 0) {
|
||
|
return mergeInto;
|
||
|
}
|
||
|
|
||
|
// Cycle through each object to extend
|
||
|
vargs.forEach(function(mergeFrom) {
|
||
|
|
||
|
// Cycle through each element of the object to merge from
|
||
|
for (var prop in mergeFrom) {
|
||
|
|
||
|
// save original value in deferred elements
|
||
|
var fromIsDeferredFunc = mergeFrom[prop] instanceof DeferredConfig;
|
||
|
var isDeferredFunc = mergeInto[prop] instanceof DeferredConfig;
|
||
|
|
||
|
if (fromIsDeferredFunc && Object.hasOwnProperty.call(mergeInto, prop)) {
|
||
|
mergeFrom[prop]._original = isDeferredFunc ? mergeInto[prop]._original : mergeInto[prop];
|
||
|
}
|
||
|
// Extend recursively if both elements are objects and target is not really a deferred function
|
||
|
if (mergeFrom[prop] instanceof Date) {
|
||
|
mergeInto[prop] = mergeFrom[prop];
|
||
|
} if (mergeFrom[prop] instanceof RegExp) {
|
||
|
mergeInto[prop] = mergeFrom[prop];
|
||
|
} else if (util.isObject(mergeInto[prop]) && util.isObject(mergeFrom[prop]) && !isDeferredFunc) {
|
||
|
util.extendDeep(mergeInto[prop], mergeFrom[prop], depth - 1);
|
||
|
}
|
||
|
else if (util.isPromise(mergeFrom[prop])) {
|
||
|
mergeInto[prop] = mergeFrom[prop];
|
||
|
}
|
||
|
// Copy recursively if the mergeFrom element is an object (or array or fn)
|
||
|
else if (mergeFrom[prop] && typeof mergeFrom[prop] === 'object') {
|
||
|
mergeInto[prop] = util.cloneDeep(mergeFrom[prop], depth -1);
|
||
|
}
|
||
|
|
||
|
// Copy property descriptor otherwise, preserving accessors
|
||
|
else if (Object.getOwnPropertyDescriptor(Object(mergeFrom), prop)){
|
||
|
Object.defineProperty(mergeInto, prop, Object.getOwnPropertyDescriptor(Object(mergeFrom), prop));
|
||
|
} else {
|
||
|
mergeInto[prop] = mergeFrom[prop];
|
||
|
}
|
||
|
}
|
||
|
});
|
||
|
|
||
|
// Chain
|
||
|
return mergeInto;
|
||
|
|
||
|
};
|
||
|
|
||
|
/**
|
||
|
* Is the specified argument a regular javascript object?
|
||
|
*
|
||
|
* The argument is an object if it's a JS object, but not an array.
|
||
|
*
|
||
|
* @protected
|
||
|
* @method isObject
|
||
|
* @param obj {*} An argument of any type.
|
||
|
* @return {boolean} TRUE if the arg is an object, FALSE if not
|
||
|
*/
|
||
|
util.isObject = function(obj) {
|
||
|
return (obj !== null) && (typeof obj === 'object') && !(Array.isArray(obj));
|
||
|
};
|
||
|
|
||
|
/**
|
||
|
* Is the specified argument a javascript promise?
|
||
|
*
|
||
|
* @protected
|
||
|
* @method isPromise
|
||
|
* @param obj {*} An argument of any type.
|
||
|
* @returns {boolean}
|
||
|
*/
|
||
|
util.isPromise = function(obj) {
|
||
|
return Object.prototype.toString.call(obj) === '[object Promise]';
|
||
|
};
|
||
|
|
||
|
/**
|
||
|
* <p>Initialize a parameter from the command line or process environment</p>
|
||
|
*
|
||
|
* <p>
|
||
|
* This method looks for the parameter from the command line in the format
|
||
|
* --PARAMETER=VALUE, then from the process environment, then from the
|
||
|
* default specified as an argument.
|
||
|
* </p>
|
||
|
*
|
||
|
* @method initParam
|
||
|
* @param paramName {String} Name of the parameter
|
||
|
* @param [defaultValue] {Any} Default value of the parameter
|
||
|
* @return {Any} The found value, or default value
|
||
|
*/
|
||
|
util.initParam = function (paramName, defaultValue) {
|
||
|
var t = this;
|
||
|
|
||
|
// Record and return the value
|
||
|
var value = util.getCmdLineArg(paramName) || process.env[paramName] || defaultValue;
|
||
|
env[paramName] = value;
|
||
|
return value;
|
||
|
}
|
||
|
|
||
|
/**
|
||
|
* <p>Get Command Line Arguments</p>
|
||
|
*
|
||
|
* <p>
|
||
|
* This method allows you to retrieve the value of the specified command line argument.
|
||
|
* </p>
|
||
|
*
|
||
|
* <p>
|
||
|
* The argument is case sensitive, and must be of the form '--ARG_NAME=value'
|
||
|
* </p>
|
||
|
*
|
||
|
* @method getCmdLineArg
|
||
|
* @param searchFor {String} The argument name to search for
|
||
|
* @return {*} false if the argument was not found, the argument value if found
|
||
|
*/
|
||
|
util.getCmdLineArg = function (searchFor) {
|
||
|
var cmdLineArgs = process.argv.slice(2, process.argv.length),
|
||
|
argName = '--' + searchFor + '=';
|
||
|
|
||
|
for (var argvIt = 0; argvIt < cmdLineArgs.length; argvIt++) {
|
||
|
if (cmdLineArgs[argvIt].indexOf(argName) === 0) {
|
||
|
return cmdLineArgs[argvIt].substr(argName.length);
|
||
|
}
|
||
|
}
|
||
|
|
||
|
return false;
|
||
|
}
|
||
|
|
||
|
/**
|
||
|
* <p>Get a Config Environment Variable Value</p>
|
||
|
*
|
||
|
* <p>
|
||
|
* This method returns the value of the specified config environment variable,
|
||
|
* including any defaults or overrides.
|
||
|
* </p>
|
||
|
*
|
||
|
* @method getEnv
|
||
|
* @param varName {String} The environment variable name
|
||
|
* @return {String} The value of the environment variable
|
||
|
*/
|
||
|
util.getEnv = function (varName) {
|
||
|
return env[varName];
|
||
|
}
|
||
|
|
||
|
|
||
|
|
||
|
/**
|
||
|
* Returns a string of flags for regular expression `re`.
|
||
|
*
|
||
|
* @param {RegExp} re Regular expression
|
||
|
* @returns {string} Flags
|
||
|
*/
|
||
|
util.getRegExpFlags = function (re) {
|
||
|
var flags = '';
|
||
|
re.global && (flags += 'g');
|
||
|
re.ignoreCase && (flags += 'i');
|
||
|
re.multiline && (flags += 'm');
|
||
|
return flags;
|
||
|
};
|
||
|
|
||
|
/**
|
||
|
* Returns a new deep copy of the current config object, or any part of the config if provided.
|
||
|
*
|
||
|
* @param {Object} config The part of the config to copy and serialize. Omit this argument to return the entire config.
|
||
|
* @returns {Object} The cloned config or part of the config
|
||
|
*/
|
||
|
util.toObject = function(config) {
|
||
|
return JSON.parse(JSON.stringify(config || this));
|
||
|
};
|
||
|
|
||
|
// Run strictness checks on NODE_ENV and NODE_APP_INSTANCE and throw an error if there's a problem.
|
||
|
util.runStrictnessChecks = function (config) {
|
||
|
var sources = config.util.getConfigSources();
|
||
|
|
||
|
var sourceFilenames = sources.map(function (src) {
|
||
|
return Path.basename(src.name);
|
||
|
});
|
||
|
|
||
|
NODE_ENV.forEach(function(env) {
|
||
|
// Throw an exception if there's no explicit config file for NODE_ENV
|
||
|
var anyFilesMatchEnv = sourceFilenames.some(function (filename) {
|
||
|
return filename.match(env);
|
||
|
});
|
||
|
// development is special-cased because it's the default value
|
||
|
if (env && (env !== 'development') && !anyFilesMatchEnv) {
|
||
|
_warnOrThrow(NODE_ENV_VAR_NAME+" value of '"+env+"' did not match any deployment config file names.");
|
||
|
}
|
||
|
// Throw if NODE_ENV matches' default' or 'local'
|
||
|
if ((env === 'default') || (env === 'local')) {
|
||
|
_warnOrThrow(NODE_ENV_VAR_NAME+" value of '"+env+"' is ambiguous.");
|
||
|
}
|
||
|
});
|
||
|
|
||
|
// Throw an exception if there's no explicit config file for NODE_APP_INSTANCE
|
||
|
var anyFilesMatchInstance = sourceFilenames.some(function (filename) {
|
||
|
return filename.match(APP_INSTANCE);
|
||
|
});
|
||
|
if (APP_INSTANCE && !anyFilesMatchInstance) {
|
||
|
_warnOrThrow("NODE_APP_INSTANCE value of '"+APP_INSTANCE+"' did not match any instance config file names.");
|
||
|
}
|
||
|
|
||
|
function _warnOrThrow (msg) {
|
||
|
var beStrict = process.env.NODE_CONFIG_STRICT_MODE;
|
||
|
var prefix = beStrict ? 'FATAL: ' : 'WARNING: ';
|
||
|
var seeURL = 'See https://github.com/node-config/node-config/wiki/Strict-Mode';
|
||
|
|
||
|
console.error(prefix+msg);
|
||
|
console.error(prefix+seeURL);
|
||
|
|
||
|
// Accept 1 and true as truthy values. When set via process.env, Node.js casts them to strings.
|
||
|
if (["true", "1"].indexOf(beStrict) >= 0) {
|
||
|
throw new Error(prefix+msg+' '+seeURL);
|
||
|
}
|
||
|
}
|
||
|
};
|
||
|
|
||
|
// Helper functions shared accross object members
|
||
|
function _toAbsolutePath (configDir) {
|
||
|
if (configDir.indexOf('.') === 0) {
|
||
|
return Path.join(process.cwd(), configDir);
|
||
|
}
|
||
|
|
||
|
return configDir;
|
||
|
}
|
||
|
|
||
|
// Instantiate and export the configuration
|
||
|
var config = module.exports = new Config();
|
||
|
|
||
|
// copy methods to util for backwards compatibility
|
||
|
util.stripComments = Parser.stripComments;
|
||
|
util.stripYamlComments = Parser.stripYamlComments;
|
||
|
|
||
|
// Produce warnings if the configuration is empty
|
||
|
var showWarnings = !(util.initParam('SUPPRESS_NO_CONFIG_WARNING'));
|
||
|
if (showWarnings && Object.keys(config).length === 0) {
|
||
|
console.error('WARNING: No configurations found in configuration directory:' +CONFIG_DIR);
|
||
|
console.error('WARNING: To disable this warning set SUPPRESS_NO_CONFIG_WARNING in the environment.');
|
||
|
}
|