mirror of
https://github.com/clusterio/clusterio.git
synced 2026-11-11 23:04:52 +09:00
Hornwitser
8662243ed1
Add a label in the web UI to config entries that require a restart to take effect as this is not obvious to end users.
860 lines
23 KiB
JavaScript
860 lines
23 KiB
JavaScript
// Configuration classes
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"use strict";
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const events = require("events");
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const isDeepStrictEqual = require("../is_deep_strict_equal");
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const { basicType } = require("../helpers");
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/**
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* Invalid Access exception
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*
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* Exception class for when an access attempt is made to a field that
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* does not permitt this access is done.
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*
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* @extends Error
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* @memberof module:lib/config
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*/
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class InvalidAccess extends Error { };
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/**
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* Invalid Value exception
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*
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* Exception class for when invalid values are attempted to be set on a
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* field.
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*
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* @extends Error
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* @memberof module:lib/config
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*/
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class InvalidValue extends Error { };
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/**
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* Invalid Field exception
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*
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* Exception class for when a group or field that does not exist is
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* attempted to be accessed.
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*
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* @extends Error
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* @memberof module:lib/config
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*/
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class InvalidField extends Error { };
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/**
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* Split the given string on the first instance of separator
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*
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* Splits `string` on the first instance of `separator` and returns an
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* array consisting of the string up to the separator and the string
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* after the separator. Returns an array with the string and an empty
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* string if the separator is not present.
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*
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* @param {string} separator - Separator to split string by.
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* @param {string} string - String to split
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* @returns {Array} string split on separator.
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* @memberof module:lib/config
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* @private
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* @inner
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*/
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function splitOn(separator, string) {
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let index = string.indexOf(separator);
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if (index === -1) {
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return [string, ""];
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}
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return [string.slice(0, index), string.slice(index + separator.length)];
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}
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/**
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* Collection of config groups
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*
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* Represents a collection of ConfigGroup instances that can be
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* managed as one.
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*
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* This is an EventEmitter with the following events:
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* - fieldChanged -
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* invoked after a field has been updated in one of the config groups
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* belonging to this config. Takes three parameters: group, field,
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* prev.
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*
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* @extends events.EventEmitter
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*
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* @memberof module:lib/config
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*/
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class Config extends events.EventEmitter {
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/**
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* Create a new instance of the given config
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*
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* @param {string} location -
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* Location to evaluate access for this instance from
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*/
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constructor(location) {
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super();
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if (!this.constructor._finalized) {
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throw new Error(`Cannot instantiate incomplete Config class ${this.constructor.name}`);
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}
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if (typeof location !== "string") {
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throw new Error("location must be a string");
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}
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this.location = location;
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this._groups = new Map();
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this._unknownGroups = new Map();
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}
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async init() {
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for (let [name, GroupClass] of this.constructor._groups) {
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if (!this._groups.has(name)) {
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let group = new GroupClass(this);
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await group.init();
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this._groups.set(name, group);
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}
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}
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this._initialized = true;
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}
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_validate(serializedConfig) {
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if (basicType(serializedConfig) !== "object") {
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throw new Error(`Expected object, not ${basicType(serializedConfig)} for config`);
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}
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if (basicType(serializedConfig.groups) !== "array") {
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throw new Error(`Expected groups to be an array, not ${basicType(serializedConfig.groups)}`);
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}
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}
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/**
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* Load config from a serialized object
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*
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* @param {object} serializedConfig - Serialized config to load.
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* @param {string=} location - Location used for access control.
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*/
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async load(serializedConfig, location = this.location) {
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this._validate(serializedConfig);
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for (let serializedGroup of serializedConfig.groups) {
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let GroupClass = this.constructor._groups.get(serializedGroup.name);
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if (!GroupClass) {
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this._unknownGroups.set(serializedGroup.name, serializedGroup);
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continue;
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}
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let group = new GroupClass(this);
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await group.load(serializedGroup, location);
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this._groups.set(group.name, group);
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}
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await this.init();
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}
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/**
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* Serialize the config to a plain JavaScript object
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*
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* @param {string=} location - Location used for access control.
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* @returns {Object} JSON serializable representation of the config.
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*/
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serialize(location = this.location) {
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let groups = [...this._unknownGroups.values()];
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for (let group of this._groups.values()) {
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groups.push(group.serialize(location));
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}
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return { groups };
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}
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/**
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* Update the configuration based on a serialized config
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*
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* Updates all groups in the config with groups in the serialized
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* config passed.
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*
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* @param {Object} serializedConfig - Output from .serialize().
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* @param {boolean} notify - Invoke fieldChanged events if true.
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* @param {string=} location - Location used for access control.
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*/
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update(serializedConfig, notify, location = this.location) {
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this._validate(serializedConfig);
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for (let serializedGroup of serializedConfig.groups) {
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let group = this._groups.get(serializedGroup.name);
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if (group) {
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group.update(serializedGroup, notify, location);
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} else {
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this._unknownGroups.set(serializedGroup.name, serializedGroup);
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}
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}
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}
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/**
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* Check if field can be accessed from the given location
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*
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* @param {string} name - Name of the field to check.
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* @param {string=} location - Location used for access control.
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* @returns {boolean} true if field is accessible
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*/
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canAccess(name, location = this.location) {
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let [group, field] = splitOn(".", name);
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return this.group(group).canAccess(field, location);
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}
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/**
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* Get the value for a config field
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*
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* @param {string} name - Name of field to get.
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* @param {string=} location - Location used for access control.
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* @returns {*} the value for the field.
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*/
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get(name, location = this.location) {
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let [group, field] = splitOn(".", name);
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return this.group(group).get(field, location);
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}
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/**
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* Set the value for a config field
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*
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* @param {string} name - Name of field to set.
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* @param {*} value - the value to set on field
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* @param {string=} location - Location used for access control.
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*/
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set(name, value, location = this.location) {
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let [group, field] = splitOn(".", name);
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this.group(group).set(field, value, location);
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}
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/**
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* Set property of an object value for a config field
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*
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* @param {string} name - Name of field to set property on.
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* @param {string} prop - Name of property to set on field.
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* @param {*} value - the value to set the property to.
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* @param {string=} location - Location used for access control.
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*/
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setProp(name, prop, value, location = this.location) {
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let [group, field] = splitOn(".", name);
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this.group(group).setProp(field, prop, value, location);
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}
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/**
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* Get the config group instance with the given name
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*
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* @param {string} name - Name of group to get.
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* @returns {module:lib/config.ConfigGroup} config group.
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*/
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group(name) {
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if (!this._initialized) {
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throw new Error(`${this.constructor.name} instance is uninitialized`);
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}
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let group = this._groups.get(name);
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if (!group) {
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throw new InvalidField(`No config group named '${name}'`);
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}
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return group;
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}
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static _initSubclass() {
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// These properties are initialized here in order to ensure that
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// they end up on the sub-class.
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if (!this._initialized) {
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this._initialized = true;
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this._finalized = false;
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this._groups = new Map();
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}
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}
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/**
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* Mapping of group name to group class
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*
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* Returns the internal mapping of group names to group classes that
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* mave been registered with this config. Note that mutating this
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* object will lead to unexpected behaviour.
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*
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* @returns {Map<string, GroupClass>} config groups
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*/
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static get groups() {
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this._initSubclass();
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return this._groups;
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}
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/**
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* Locks this Config class from adding more groups.
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*/
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static finalize() {
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this._initSubclass();
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this._finalized = true;
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}
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/**
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* Register a ConfigGroup with this Config
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*
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* Adds the ConfigGroup to this config as a group that will get
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* initialized, loaded and serialized with this config class.
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*
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* @param {module:lib/config.ConfigGroup} group - class to register.
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*/
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static registerGroup(group) {
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this._initSubclass();
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if (this._finalized) {
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throw new Error("Cannot register group on finalized config");
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}
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if (!group._finalized) {
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throw new Error("Group must be finalized before it can be registered");
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}
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if (this._groups.has(group.groupName)) {
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throw new Error(`${group.groupName} has already been registered`);
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}
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this._groups.set(group.groupName, group);
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}
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}
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/**
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* Collection of related config entries
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*
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* Type checks and stores a collection of related config entries. Attempt
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* to set invalid values for fields will result in an error thrown while
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* loading a config with invalid values will result in those being replaced
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* by the innitial value for those fields.
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*
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* @memberof module:lib/config
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*/
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class ConfigGroup {
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/**
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* Creates a new config group.
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*
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* After the creation of the new config group you have to call
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* either .init() or .load() on it in order to fully initialize it.
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*
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* @param {module:lib/config.Config} config -
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* Parent config for this group instance.
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*/
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constructor(config) {
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if (!this.constructor._finalized) {
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throw new Error(`Cannot instantiate incomplete ConfigGroup class ${this.constructor.name}`);
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}
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this._fields = new Map();
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this._unknownFields = new Map();
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this.config = config;
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}
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/**
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* Check access for a field
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*
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* @param {object} def - definition for for the field to check.
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* @param {string} remote - location of remote access to check for.
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* @param {boolean} error - throw on failure to pass check.
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* @throws {module:lib/config.InvalidAccess}
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* if access is not granted and error is true.
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* @returns {boolean} true if access is granted
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* @private
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*/
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_checkAccess(def, remote, error) {
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for (let loc of [remote, this.config.location]) {
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if (!def.access.includes(loc)) {
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if (error) {
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throw new InvalidAccess(`Field '${def.name}' is not accessible from ${loc}`);
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} else {
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return false;
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}
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}
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}
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return true;
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}
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/**
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* Initialize new config group
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*
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* Computes and assigns the initial values for all fields of the
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* config group.
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*/
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async init() {
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for (let [name, def] of this.constructor._definitions) {
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if (this._fields.has(name)) {
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continue;
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}
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if (!def.access.includes(this.config.location)) {
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continue;
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}
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let value = null;
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if (typeof def.initial_value === "function") {
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value = await def.initial_value();
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} else if (def.initial_value !== undefined) {
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value = def.initial_value;
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}
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this._fields.set(name, value);
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}
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}
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/**
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* Load from serialized group
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*
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* Loads all the values from the passed serialized version of the
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* group and then initializes any possible missing fields from it to
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* their default values.
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*
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* @param {Object} serializedGroup -
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* Result from a previous call to .serialize().
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* @param {string=} location - Location used for access control.
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*/
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async load(serializedGroup, location = this.config.location) {
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this.update(serializedGroup, false, location);
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await this.init();
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}
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/**
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* Name of the group
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*
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* Shortcut for `group.constructor.groupName`
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*/
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get name() {
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return this.constructor.groupName;
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}
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/**
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* Check if field can be accessed from the given location
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*
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* @param {string} name - Name of field to check.
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* @param {string=} location - Location used for access control.
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* @returns {boolean} true if field is accessible
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*/
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canAccess(name, location = this.config.location) {
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let def = this.constructor._definitions.get(name);
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if (!def) {
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throw new InvalidField(`No field named '${name}'`);
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}
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return this._checkAccess(def, location, false);
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}
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/**
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* Get value for field
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*
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* @param {string} name - Name of field to get.
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* @param {string=} location - Location used for access control.
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* @returns {*} Value stored for the field.
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*/
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get(name, location = this.config.location) {
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let def = this.constructor._definitions.get(name);
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if (!def) {
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throw new InvalidField(`No field named '${name}'`);
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}
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this._checkAccess(def, location, true);
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return this._fields.get(name);
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}
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/**
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* Set value of field
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*
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* The field must be defined for the config group and the value is
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* type checked against the field definition.
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*
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* @param {string} name - Name of field to set.
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* @param {*} value - Value to set for field.
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* @param {string=} location - Location used for access control.
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* @throws {module:lib/config.InvalidField} if field is not defined.
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* @throws {module:lib/config.InvalidValue} if value is not allowed for the field.
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*/
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set(name, value, location = this.config.location) {
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let def = this.constructor._definitions.get(name);
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if (!def) {
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throw new InvalidField(`No field named '${name}'`);
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}
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this._checkAccess(def, location, true);
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// Empty strings are treates as null
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if (value === "") {
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value = null;
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}
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if (def.enum && !def.enum.includes(value)) {
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throw new InvalidValue(`Expected one of [${def.enum.join(", ")}], not ${value}`);
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}
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if (basicType(value) === "string") {
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if (def.type === "boolean") {
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if (value === "true") {
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value = true;
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} else if (value === "false") {
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value = false;
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}
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} else if (def.type === "number") {
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let numberRegExp = /^[+-]?(Infinity|\d+\.(\d+)?([eE][+-]?\d+)?|\.?\d+([eE][+-]?\d+)?)$/;
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if (numberRegExp.test(value.trim())) {
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value = Number.parseFloat(value);
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}
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} else if (def.type === "object") {
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try {
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value = JSON.parse(value);
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} catch (err) {
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throw new InvalidValue(`Error parsing value for ${name}: ${err.message}`);
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}
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}
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}
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if (value === null) {
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if (!def.optional) {
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throw new InvalidValue(`Field ${name} cannot be null`);
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}
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} else if (basicType(value) !== def.type) {
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throw new InvalidValue(`Expected type of ${name} to be ${def.type}, not ${basicType(value)}`);
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}
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let prev = this._fields.get(name);
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this._fields.set(name, value);
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if (this.config && !isDeepStrictEqual(value, prev)) {
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this.config.emit("fieldChanged", this, name, prev);
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}
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}
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/**
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* Set property of object field
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*
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* Update value of stored object field by setting the specified property
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* on it. The field must be defined as an object for the config group.
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*
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* @param {string} name - Name of field to set property on.
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* @param {string} prop - Name of property to set on field.
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* @param {*} value - the value to set the property to.
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* @param {string=} location - Location used for access control.
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* @throws {module:lib/config.InvalidField} if field is not defined.
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* @throws {module:lib/config.InvalidValue} if field is not an object.
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*/
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setProp(name, prop, value, location = this.config.location) {
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let def = this.constructor._definitions.get(name);
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if (!def) {
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throw new InvalidField(`No field named '${name}'`);
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}
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this._checkAccess(def, location, true);
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if (def.type !== "object") {
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throw new InvalidValue(`Cannot set property on non-object field '${name}'`);
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}
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let prev = this._fields.get(name);
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let updated = {...prev || {}};
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if (value !== undefined) {
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updated[prop] = value;
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} else {
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delete updated[prop];
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}
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this._fields.set(name, updated);
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if (this.config && !isDeepStrictEqual(updated, prev)) {
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this.config.emit("fieldChanged", this, name, prev);
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}
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}
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/**
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* Update a config group from a serialized group
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*
|
|
* Overwrites the values of all the fields in this config group that
|
|
* has a valid value in the passed serialized group with that value.
|
|
*
|
|
* @param {Object} serializedGroup -
|
|
* Result from a previous call to .serialize().
|
|
* @param {boolean} notify - Invoke fieldChanged events if true.
|
|
* @param {string=} location - Location used for access control.
|
|
*/
|
|
update(serializedGroup, notify, location = this.config.location) {
|
|
if (basicType(serializedGroup) !== "object") {
|
|
throw new Error(`Expected object, not ${basicType(serializedGroup)} for ConfigGroup`);
|
|
}
|
|
|
|
if (serializedGroup.name !== this.name) {
|
|
throw new Error(`Expected group name ${this.name}, not ${serializedGroup.name}`);
|
|
}
|
|
|
|
if (basicType(serializedGroup.fields) !== "object") {
|
|
throw new Error(`Expected fields to be an object, not ${basicType(serializedGroup.fields)}`);
|
|
}
|
|
|
|
for (let [name, value] of Object.entries(serializedGroup.fields)) {
|
|
let def = this.constructor._definitions.get(name);
|
|
if (!def) {
|
|
this._unknownFields.set(name, value);
|
|
continue;
|
|
}
|
|
|
|
if (!this._checkAccess(def, location, false)) {
|
|
continue;
|
|
}
|
|
|
|
if (def.optional) {
|
|
if (value !== null && basicType(value) !== def.type) {
|
|
continue;
|
|
}
|
|
|
|
} else if (basicType(value) !== def.type) {
|
|
continue;
|
|
}
|
|
|
|
if (def.enum && !def.enum.includes(value)) {
|
|
continue;
|
|
}
|
|
|
|
let prev = this._fields.get(name);
|
|
this._fields.set(name, value);
|
|
if (notify && this.config && !isDeepStrictEqual(value, prev)) {
|
|
this.config.emit("fieldChanged", this, name, prev);
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Serialize the config to a plain JavaScript object
|
|
*
|
|
* @param {string=} location - Location used for access control.
|
|
* @returns {Object} JSON serializable representation of the group.
|
|
*/
|
|
serialize(location = this.config.location) {
|
|
let fields = {};
|
|
for (let [name, value] of this._fields) {
|
|
let def = this.constructor._definitions.get(name);
|
|
if (!this._checkAccess(def, location, false)) {
|
|
continue;
|
|
}
|
|
|
|
fields[name] = value;
|
|
}
|
|
|
|
for (let [name, value] of this._unknownFields) {
|
|
fields[name] = value;
|
|
}
|
|
|
|
return {
|
|
name: this.name,
|
|
fields,
|
|
};
|
|
}
|
|
|
|
static _initSubclass() {
|
|
// These properties are initialized here in order to ensure that
|
|
// they end up on the sub-class.
|
|
if (!this._initialized) {
|
|
this._initialized = true;
|
|
this._definitions = new Map();
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Mapping of config name to field meta data
|
|
*
|
|
* Returns the internal meta data for the fields of this class.
|
|
* Note that mutating this object will lead to unexpected behaviour.
|
|
*
|
|
* @returns {Map<string, Object>} field meta data
|
|
*/
|
|
static get definitions() {
|
|
this._initSubclass();
|
|
return this._definitions;
|
|
}
|
|
|
|
/**
|
|
* Define a new configuration field
|
|
*
|
|
* @param {Object} item - Field definition.
|
|
* @param {Array<string>=} item.access -
|
|
* Array of strings declaring where this config entry can be read
|
|
* and modified from.
|
|
* @param {string} item.type -
|
|
* string declaring the type of the config value, supports
|
|
* boolean, string, number and object.
|
|
* @param {string} item.name -
|
|
* Name of the configuration field. Should follow the
|
|
* lower_case_underscore style.
|
|
* @param {string} item.title -
|
|
* Text used to identify the config field in user interfaces.
|
|
* @param {string} item.description -
|
|
* Text used to describe the config field in user interfaces.
|
|
* @param {Array=} item.enum -
|
|
* Array of all values that are acceptible. Useful for making
|
|
* enumerated values.
|
|
* @param {boolean=} item.restartRequired -
|
|
* True if a restart of the entity this config is attached to is
|
|
* required for changes to take effect. Informative only, defaults
|
|
* to false.
|
|
* @param {Array=} item.restartRequiredProps -
|
|
* Properties to invert the value of restartRequired for if present.
|
|
* @param {boolean=} item.optional -
|
|
* True if this field can be set to null. Defaults to false.
|
|
* @param {*=} item.initial_value -
|
|
* Value this config field should take in a newly initialized
|
|
* config. This can also be an async function returning the
|
|
* value to use.
|
|
*/
|
|
static define(item) {
|
|
if (this._finalized) {
|
|
throw new Error(`Cannot define field for ConfigGroup class ${this.name} after it has been finalized`);
|
|
}
|
|
|
|
if (basicType(this.groupName) !== "string") {
|
|
throw new Error(`Expected ConfigGroup class ${this.name} to have the groupName property set to a string`);
|
|
}
|
|
|
|
this._initSubclass();
|
|
|
|
let itemKeys = Object.keys(item);
|
|
|
|
// Check for required properties
|
|
["name", "type"].forEach(prop => {
|
|
if (!itemKeys.includes(prop)) {
|
|
throw new Error(`${prop} is required when defining an field`);
|
|
}
|
|
});
|
|
|
|
// Validate properties
|
|
let validTypes = ["boolean", "string", "number", "object"];
|
|
// eslint-disable-next-line complexity
|
|
Object.keys(item).forEach(key => {
|
|
let value = item[key];
|
|
let valueType = basicType(value);
|
|
switch (key) {
|
|
case "type":
|
|
if (!validTypes.includes(value)) {
|
|
throw new Error(`${value} is not a valid type`);
|
|
}
|
|
break;
|
|
|
|
case "access":
|
|
if (valueType !== "array") {
|
|
throw new Error("access must be an array");
|
|
}
|
|
break;
|
|
|
|
case "enum":
|
|
if (valueType !== "array") {
|
|
throw new Error("enum must be an array");
|
|
}
|
|
break;
|
|
|
|
case "name":
|
|
if (valueType !== "string") {
|
|
throw new Error("name must be a string");
|
|
}
|
|
break;
|
|
|
|
case "title":
|
|
if (valueType !== "string") {
|
|
throw new Error("title must be a string");
|
|
}
|
|
break;
|
|
|
|
case "description":
|
|
if (valueType !== "string") {
|
|
throw new Error("description must be a string");
|
|
}
|
|
break;
|
|
|
|
case "restartRequired":
|
|
if (valueType !== "boolean") {
|
|
throw new Error("restartRequired must be a boolean");
|
|
}
|
|
break;
|
|
|
|
case "restartRequiredProps":
|
|
if (valueType !== "array") {
|
|
throw new Error("restartRequiredProps must be a array");
|
|
}
|
|
break;
|
|
|
|
case "optional":
|
|
if (valueType !== "boolean") {
|
|
throw new Error("optional must be a boolean");
|
|
}
|
|
break;
|
|
|
|
case "initial_value":
|
|
if (valueType !== item.type && valueType !== "function") {
|
|
throw new Error("initial_value must match the type or be a function");
|
|
}
|
|
break;
|
|
|
|
default:
|
|
throw new Error(`Unknown property ${key}`);
|
|
}
|
|
});
|
|
|
|
if (this._definitions.has(item.name)) {
|
|
throw new Error(`Config field ${item.name} has already been defined`);
|
|
}
|
|
|
|
let computed = {
|
|
access: this.defaultAccess,
|
|
optional: false,
|
|
fullName: `${this.groupName}.${item.name}`,
|
|
restartRequired: false,
|
|
...item,
|
|
};
|
|
|
|
if (item.restartRequiredProps && item.type !== "object") {
|
|
throw new Error("restartRequiredProps is only allowed if type is object");
|
|
}
|
|
|
|
if (!computed.access) {
|
|
throw new Error(`access not set and no defaultAccess defined for ${this.name}`);
|
|
}
|
|
|
|
if (!computed.optional && computed.initial_value === undefined) {
|
|
throw new Error(`Non-optional field ${item.name} needs an initial_value`);
|
|
}
|
|
|
|
this._definitions.set(item.name, computed);
|
|
}
|
|
|
|
/**
|
|
* Locks this ConfigGroup class from adding more definitons.
|
|
*/
|
|
static finalize() {
|
|
if (basicType(this.groupName) !== "string") {
|
|
throw new Error(`Expected ConfigGroup class ${this.name} to have the groupName property set to a string`);
|
|
}
|
|
|
|
this._initSubclass();
|
|
this._finalized = true;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Config group for plugins
|
|
*
|
|
* Grouping that includes per plugin fields clusterio uses to manage
|
|
* plugins. This is currently only the enabled field. It is otherwise
|
|
* identical to the ConfigGroup class.
|
|
*
|
|
* @extends module:lib/config.ConfigGroup
|
|
* @memberof module:lib/config
|
|
*/
|
|
class PluginConfigGroup extends ConfigGroup {
|
|
static _initSubclass() {
|
|
if (!this._initialized) {
|
|
super._initSubclass();
|
|
this.define({
|
|
name: "load_plugin",
|
|
title: "Load Plugin",
|
|
restartRequired: true,
|
|
type: "boolean",
|
|
initial_value: true,
|
|
});
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
module.exports = {
|
|
InvalidAccess,
|
|
InvalidField,
|
|
InvalidValue,
|
|
|
|
Config,
|
|
ConfigGroup,
|
|
PluginConfigGroup,
|
|
};
|