39 lines
1.4 KiB
JavaScript
39 lines
1.4 KiB
JavaScript
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module.exports = function(RED) {
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"use strict";
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var msgpack = require('msgpack-lite');
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function MsgPackNode(n) {
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RED.nodes.createNode(this,n);
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this.property = n.property||"payload";
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var node = this;
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this.on("input", function(msg) {
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var value = RED.util.getMessageProperty(msg,node.property);
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if (value !== undefined) {
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if (Buffer.isBuffer(value)) {
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var l = value.length;
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try {
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value = msgpack.decode(value);
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RED.util.setMessageProperty(msg,node.property,value);
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node.send(msg);
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node.status({text:l +" b->o "+ JSON.stringify(value).length});
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}
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catch (e) {
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node.error("Bad decode",msg);
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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(value).length;
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value = msgpack.encode(value);
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RED.util.setMessageProperty(msg,node.property,value);
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node.status({text:le +" o->b "+ value.length});
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node.send(msg);
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}
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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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