49 lines
1.8 KiB
JavaScript
49 lines
1.8 KiB
JavaScript
/**
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* Copyright 2014 IBM Corp.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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**/
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module.exports = function(RED) {
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"use strict";
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var msgpack = require('msgpack-js');
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function MsgPackNode(n) {
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RED.nodes.createNode(this,n);
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var node = this;
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this.on("input", function(msg) {
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if (msg.hasOwnProperty("payload")) {
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if (Buffer.isBuffer(msg.payload)) {
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var l = msg.payload.length;
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try {
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msg.payload = msgpack.decode(msg.payload);
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node.send(msg);
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node.status({text:l +" b->o "+ JSON.stringify(msg.payload).length});
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}
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catch (e) {
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node.warn("Bad decode: "+e);
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node.status({text:"not a msgpack buffer"});
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}
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}
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else {
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var le = JSON.stringify(msg.payload).length;
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msg.payload = msgpack.encode(msg.payload);
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node.send(msg);
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node.status({text:le +" o->b "+ msg.payload.length});
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}
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} else { node.warn("No payload found to process");
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});
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}
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RED.nodes.registerType("msgpack",MsgPackNode);
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}
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