WIP: separate runtime and api components

red/runtime/nodes/index.js

@@ -0,0 +1,134 @@
+/**
+ * Copyright 2013, 2015 IBM Corp.
+ *
+ * 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");
+
+var registry = require("./registry");
+var credentials = require("./credentials");
+var flows = require("./flows");
+var Node = require("./Node");
+var log = require("../log");
+
+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);
+}
+
+/**
+ * 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
+ */
+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 = {};
+    }
+}
+
+function init(_settings,storage) {
+    settings = _settings;
+    credentials.init(storage);
+    flows.init(_settings,storage);
+    registry.init(_settings);
+}
+
+function disableNode(id) {
+    flows.checkTypeInUse(id);
+    return registry.disableNode(id);
+}
+
+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++) {
+            flows.checkTypeInUse(module+"/"+info.nodes[i].name);
+        }
+        return registry.uninstallModule(module);
+    }
+}
+
+module.exports = {
+    // Lifecycle
+    init: init,
+    load: registry.load,
+
+    // Node registry
+    createNode: createNode,
+    getNode: flows.get,
+    eachNode: flows.eachNode,
+
+    installModule: registry.installModule,
+    uninstallModule: uninstallModule,
+
+    enableNode: registry.enableNode,
+    disableNode: disableNode,
+
+    // Node type registry
+    registerType: registerType,
+    getType: registry.get,
+
+    getNodeInfo: registry.getNodeInfo,
+    getNodeList: registry.getNodeList,
+
+    getModuleInfo: registry.getModuleInfo,
+
+    getNodeConfigs: registry.getNodeConfigs,
+    getNodeConfig: registry.getNodeConfig,
+
+    clearRegistry: registry.clear,
+    cleanModuleList: registry.cleanModuleList,
+
+    // Flow handling
+    loadFlows: flows.load,
+    startFlows: flows.startFlows,
+    stopFlows: flows.stopFlows,
+    setFlows: flows.setFlows,
+    getFlows: flows.getFlows,
+
+    // Credentials
+    addCredentials: credentials.add,
+    getCredentials: credentials.get,
+    deleteCredentials: credentials.delete,
+    getCredentialDefinition: credentials.getDefinition
+};