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node-red/red/nodes/index.js

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/**
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* Copyright 2013, 2015 IBM Corp.
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*
* 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 when = require("when");
var path = require("path");
var fs = require("fs");
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var registry = require("./registry");
var credentials = require("./credentials");
var flows = require("./flows");
var Node = require("./Node");
var log = require("../log");
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var events = require("../events");
var child_process = require('child_process');
var settings;
/**
* Registers a node constructor
* @param type - the string type name
* @param constructor - the constructor function for this node type
* @param opts - optional additional options for the node
*/
function registerType(type,constructor,opts) {
if (opts && opts.credentials) {
credentials.register(type,opts.credentials);
}
registry.registerType(type,constructor);
}
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/**
* Called from a Node's constructor function, invokes the super-class
* constructor and attaches any credentials to the node.
* @param node the node object being created
* @param def the instance definition for the node
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*/
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function createNode(node,def) {
Node.call(node,def);
var id = node.id;
if (def._alias) {
id = def._alias;
}
var creds = credentials.get(id);
if (creds) {
//console.log("Attaching credentials to ",node.id);
node.credentials = creds;
} else if (credentials.getDefinition(node.type)) {
node.credentials = {};
}
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}
function init(_settings,storage) {
settings = _settings;
credentials.init(storage);
flows.init(_settings,storage);
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registry.init(_settings);
}
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function disableNode(id) {
flows.checkTypeInUse(id);
return registry.disableNode(id);
}
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function uninstallModule(module) {
var info = registry.getModuleInfo(module);
if (!info) {
throw new Error(log._("nodes.index.unrecognised-module", {module:module}));
} else {
for (var i=0;i<info.nodes.length;i++) {
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flows.checkTypeInUse(module+"/"+info.nodes[i].name);
}
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return registry.uninstallModule(module);
}
}
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module.exports = {
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// Lifecycle
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init: init,
load: registry.load,
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// Node registry
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createNode: createNode,
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getNode: flows.get,
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eachNode: flows.eachNode,
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installModule: registry.installModule,
uninstallModule: uninstallModule,
enableNode: registry.enableNode,
disableNode: disableNode,
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// Node type registry
registerType: registerType,
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getType: registry.get,
getNodeInfo: registry.getNodeInfo,
getNodeList: registry.getNodeList,
getModuleInfo: registry.getModuleInfo,
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getNodeConfigs: registry.getNodeConfigs,
getNodeConfig: registry.getNodeConfig,
clearRegistry: registry.clear,
cleanModuleList: registry.cleanModuleList,
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// Flow handling
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loadFlows: flows.load,
startFlows: flows.startFlows,
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stopFlows: flows.stopFlows,
setFlows: flows.setFlows,
getFlows: flows.getFlows,
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// Credentials
addCredentials: credentials.add,
getCredentials: credentials.get,
deleteCredentials: credentials.delete,
getCredentialDefinition: credentials.getDefinition
};