[CCSDK-28] populated the seed code for dgbuilder

[ccsdk/distribution.git] / dgbuilder / nodes / 99-sample.js.demo

diff --git a/dgbuilder/nodes/99-sample.js.demo b/dgbuilder/nodes/99-sample.js.demo
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+/**
+ * Copyright 2014 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.
+ **/
+
+// If you use this as a template, update the copyright with your own name.
+
+// Sample Node-RED node file
+
+
+module.exports = function(RED) {
+    "use strict";
+    // require any external libraries we may need....
+    //var foo = require("foo-library");
+
+    // The main node definition - most things happen in here
+    function SampleNode(n) {
+        // Create a RED node
+        RED.nodes.createNode(this,n);
+
+        // Store local copies of the node configuration (as defined in the .html)
+        this.topic = n.topic;
+
+        // Do whatever you need to do in here - declare callbacks etc
+        // Note: this sample doesn't do anything much - it will only send
+        // this message once at startup...
+        // Look at other real nodes for some better ideas of what to do....
+        var msg = {};
+        msg.topic = this.topic;
+        msg.payload = "Hello world !"
+
+        // send out the message to the rest of the workspace.
+        this.send(msg);
+
+        // respond to inputs....
+        this.on('input', function (msg) {
+            node.warn("I saw a payload: "+msg.payload);
+            // in this example just send it straight on... should process it here really
+            this.send(msg);
+        });
+
+        this.on("close", function() {
+            // Called when the node is shutdown - eg on redeploy.
+            // Allows ports to be closed, connections dropped etc.
+            // eg: this.client.disconnect();
+        });
+    }
+
+    // Register the node by name. This must be called before overriding any of the
+    // Node functions.
+    RED.nodes.registerType("sample",SampleNode);
+
+}