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node-red/packages/node_modules/@node-red/runtime/lib/library/index.js
2019-04-25 11:32:09 +01:00

76 lines
2.2 KiB
JavaScript

/**
* Copyright JS Foundation and other contributors, http://js.foundation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
**/
var knownTypes = {};
var libraries = {};
function init(runtime) {
knownTypes = {
'flows': 'node-red'
};
libraries["_examples_"] = require("./examples");
libraries["_examples_"].init(runtime);
libraries["local"] = require("./local");
libraries["local"].init(runtime);
}
function registerType(id,type) {
// TODO: would like to enforce this, but currently the tests register the same type multiple
// times and have no way to remove themselves.
// if (knownTypes.hasOwnProperty(type)) {
// throw new Error(`Library type '${type}' already registered by ${id}'`)
// }
knownTypes[type] = id;
}
function getEntry(library,type,path) {
if (!knownTypes.hasOwnProperty(type)) {
throw new Error(`Unknown library type '${type}'`);
}
if (libraries.hasOwnProperty(library)) {
return libraries[library].getEntry(type,path);
} else {
throw new Error(`Unknown library '${library}'`);
}
}
function saveEntry(library,type,path,meta,body) {
if (!knownTypes.hasOwnProperty(type)) {
throw new Error(`Unknown library type '${type}'`);
}
if (libraries.hasOwnProperty(library)) {
if (libraries[library].hasOwnProperty("saveEntry")) {
return libraries[library].saveEntry(type,path,meta,body);
} else {
throw new Error(`Library '${library}' is read-only`);
}
} else {
throw new Error(`Unknown library '${library}'`);
}
}
module.exports = {
init: init,
register: registerType,
getEntry: getEntry,
saveEntry: saveEntry
}