[CCSDK-28] populated the seed code for dgbuilder

[ccsdk/distribution.git] / dgbuilder / core_nodes / parsers / 70-JSON.js

diff --git a/dgbuilder/core_nodes/parsers/70-JSON.js b/dgbuilder/core_nodes/parsers/70-JSON.js
new file mode 100644 (file)
index 0000000..e216bd4
--- /dev/null
+++ b/dgbuilder/core_nodes/parsers/70-JSON.js
@@ -0,0 +1,46 @@
+/**
+ * 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.
+ **/
+
+module.exports = function(RED) {
+    "use strict";
+    var util = require("util");
+
+    function JSONNode(n) {
+        RED.nodes.createNode(this,n);
+        var node = this;
+        this.on("input", function(msg) {
+            if (msg.hasOwnProperty("payload")) {
+                if (typeof msg.payload === "string") {
+                    try {
+                        msg.payload = JSON.parse(msg.payload);
+                        node.send(msg);
+                    }
+                    catch(e) { node.log(e+ "\n"+msg.payload); }
+                }
+                else if (typeof msg.payload === "object") {
+                    if (!Buffer.isBuffer(msg.payload) ) {
+                        if (!util.isArray(msg.payload)) {
+                            msg.payload = JSON.stringify(msg.payload);
+                            node.send(msg);
+                        }
+                    }
+                }
+                else { node.log("dropped: "+msg.payload); }
+            }
+        });
+    }
+    RED.nodes.registerType("json",JSONNode);
+}