mirror of
https://github.com/node-red/node-red.git
synced 2023-10-10 13:36:53 +02:00
Messaging API support in Split/Join nodes
This commit is contained in:
Kunihiko Toumura
parent
15a600c763
commit
407cb3e7d5
@ -17,18 +17,18 @@
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module.exports = function(RED) {
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"use strict";
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function sendArray(node,msg,array) {
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function sendArray(node,msg,array,send) {
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for (var i = 0; i < array.length-1; i++) {
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msg.payload = array[i];
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msg.parts.index = node.c++;
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if (node.stream !== true) { msg.parts.count = array.length; }
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node.send(RED.util.cloneMessage(msg));
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send(RED.util.cloneMessage(msg));
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}
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if (node.stream !== true) {
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msg.payload = array[i];
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msg.parts.index = node.c++;
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msg.parts.count = array.length;
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node.send(RED.util.cloneMessage(msg));
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send(RED.util.cloneMessage(msg));
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node.c = 0;
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}
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else { node.remainder = array[i]; }
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@ -67,7 +67,8 @@ module.exports = function(RED) {
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}
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node.c = 0;
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node.buffer = Buffer.from([]);
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this.on("input", function(msg) {
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node.pendingDones = [];
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this.on("input", function(msg, send, done) {
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if (msg.hasOwnProperty("payload")) {
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if (msg.hasOwnProperty("parts")) { msg.parts = { parts:msg.parts }; } // push existing parts to a stack
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else { msg.parts = {}; }
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@ -93,14 +94,23 @@ module.exports = function(RED) {
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msg.payload = data.substring(pos,pos+node.splt);
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msg.parts.index = node.c++;
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pos += node.splt;
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node.send(RED.util.cloneMessage(msg));
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send(RED.util.cloneMessage(msg));
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}
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if (count > 1) {
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node.pendingDones.forEach(d => d());
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node.pendingDones = [];
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}
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node.remainder = data.substring(pos);
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if ((node.stream !== true) || (node.remainder.length === node.splt)) {
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msg.payload = node.remainder;
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msg.parts.index = node.c++;
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node.send(RED.util.cloneMessage(msg));
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send(RED.util.cloneMessage(msg));
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node.pendingDones.forEach(d => d());
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node.pendingDones = [];
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done();
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node.remainder = "";
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} else {
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node.pendingDones.push(done);
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}
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}
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else {
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@ -115,7 +125,8 @@ module.exports = function(RED) {
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a = msg.payload.split(node.splt);
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msg.parts.ch = node.splt; // pass the split char to other end for rejoin
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}
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sendArray(node,msg,a);
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sendArray(node,msg,a,send);
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done();
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}
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}
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else if (Array.isArray(msg.payload)) { // then split array into messages
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@ -135,8 +146,9 @@ module.exports = function(RED) {
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}
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msg.parts.index = i;
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pos += node.arraySplt;
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node.send(RED.util.cloneMessage(msg));
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send(RED.util.cloneMessage(msg));
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}
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done();
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}
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else if ((typeof msg.payload === "object") && !Buffer.isBuffer(msg.payload)) {
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var j = 0;
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@ -152,10 +164,11 @@ module.exports = function(RED) {
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msg.parts.key = p;
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msg.parts.index = j;
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msg.parts.count = l;
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node.send(RED.util.cloneMessage(msg));
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send(RED.util.cloneMessage(msg));
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j += 1;
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}
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}
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done();
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}
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else if (Buffer.isBuffer(msg.payload)) {
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var len = node.buffer.length + msg.payload.length;
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@ -176,14 +189,23 @@ module.exports = function(RED) {
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msg.payload = buff.slice(pos,pos+node.splt);
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msg.parts.index = node.c++;
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pos += node.splt;
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node.send(RED.util.cloneMessage(msg));
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send(RED.util.cloneMessage(msg));
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}
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if (count > 1) {
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node.pendingDones.forEach(d => d());
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node.pendingDones = [];
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}
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node.buffer = buff.slice(pos);
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if ((node.stream !== true) || (node.buffer.length === node.splt)) {
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msg.payload = node.buffer;
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msg.parts.index = node.c++;
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node.send(RED.util.cloneMessage(msg));
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send(RED.util.cloneMessage(msg));
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node.pendingDones.forEach(d => d());
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node.pendingDones = [];
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done();
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node.buffer = Buffer.from([]);
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} else {
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node.pendingDones.push(done);
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}
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}
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else {
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@ -210,23 +232,34 @@ module.exports = function(RED) {
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while (pos > -1) {
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msg.payload = buff.slice(p,pos);
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msg.parts.index = node.c++;
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node.send(RED.util.cloneMessage(msg));
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send(RED.util.cloneMessage(msg));
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i++;
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p = pos+node.splt.length;
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pos = buff.indexOf(node.splt,p);
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}
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if (count > 1) {
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node.pendingDones.forEach(d => d());
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node.pendingDones = [];
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}
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if ((node.stream !== true) && (p < buff.length)) {
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msg.payload = buff.slice(p,buff.length);
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msg.parts.index = node.c++;
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msg.parts.count = node.c++;
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node.send(RED.util.cloneMessage(msg));
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send(RED.util.cloneMessage(msg));
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node.pendingDones.forEach(d => d());
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node.pendingDones = [];
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}
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else {
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node.buffer = buff.slice(p,buff.length);
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node.pendingDones.push(done);
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}
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if (node.buffer.length == 0) {
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done();
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}
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}
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} else { // otherwise drop the message.
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done();
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}
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//else { } // otherwise drop the message.
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}
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});
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}
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@ -264,16 +297,16 @@ module.exports = function(RED) {
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}
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function reduceMessageGroup(node,msgs,exp,fixup,count,accumulator,done) {
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var msg = msgs.shift();
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exp.assign("I", msg.parts.index);
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function reduceMessageGroup(node,msgInfos,exp,fixup,count,accumulator,done) {
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var msgInfo = msgInfos.shift();
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exp.assign("I", msgInfo.msg.parts.index);
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exp.assign("N", count);
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exp.assign("A", accumulator);
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RED.util.evaluateJSONataExpression(exp, msg, (err,result) => {
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RED.util.evaluateJSONataExpression(exp, msgInfo.msg, (err,result) => {
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if (err) {
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return done(err);
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}
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if (msgs.length === 0) {
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if (msgInfos.length === 0) {
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if (fixup) {
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fixup.assign("N", count);
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fixup.assign("A", result);
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@ -281,39 +314,43 @@ module.exports = function(RED) {
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if (err) {
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return done(err);
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}
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node.send({payload: result});
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msgInfo.send({payload: result});
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done();
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});
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} else {
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node.send({payload: result});
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msgInfo.send({payload: result});
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done();
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}
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} else {
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reduceMessageGroup(node,msgs,exp,fixup,count,result,done);
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reduceMessageGroup(node,msgInfos,exp,fixup,count,result,done);
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}
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});
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}
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function reduceAndSendGroup(node, group, done) {
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var is_right = node.reduce_right;
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var flag = is_right ? -1 : 1;
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var msgs = group.msgs;
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var msgInfos = group.msgs;
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const preservedMsgInfos = [...msgInfos];
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try {
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RED.util.evaluateNodeProperty(node.exp_init, node.exp_init_type, node, {}, (err,accum) => {
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var reduceExpression = node.reduceExpression;
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var fixupExpression = node.fixupExpression;
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var count = group.count;
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msgs.sort(function(x,y) {
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var ix = x.parts.index;
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var iy = y.parts.index;
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msgInfos.sort(function(x,y) {
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var ix = x.msg.parts.index;
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var iy = y.msg.parts.index;
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if (ix < iy) {return -flag;}
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if (ix > iy) {return flag;}
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return 0;
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});
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reduceMessageGroup(node, msgs,reduceExpression,fixupExpression,count,accum,(err,result) => {
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reduceMessageGroup(node, msgInfos,reduceExpression,fixupExpression,count,accum,(err,result) => {
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if (err) {
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preservedMsgInfos.pop(); // omit last message to emit error message
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preservedMsgInfos.forEach(mInfo => mInfo.done());
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done(err);
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return;
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} else {
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preservedMsgInfos.forEach(mInfo => mInfo.done());
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done();
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}
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})
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@ -323,7 +360,8 @@ module.exports = function(RED) {
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}
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}
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function reduceMessage(node, msg, done) {
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function reduceMessage(node, msgInfo, done) {
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let msg = msgInfo.msg;
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if (msg.hasOwnProperty('parts')) {
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var parts = msg.parts;
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var pending = node.pending;
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@ -344,7 +382,7 @@ module.exports = function(RED) {
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if (parts.hasOwnProperty('count') && (group.count === undefined)) {
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group.count = parts.count;
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}
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msgs.push(msg);
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msgs.push(msgInfo);
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pending_count++;
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var completeProcess = function(err) {
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if (err) {
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@ -353,6 +391,13 @@ module.exports = function(RED) {
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node.pending_count = pending_count;
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var max_msgs = maxKeptMsgsCount(node);
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if ((max_msgs > 0) && (pending_count > max_msgs)) {
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Object.values(node.pending).forEach(group => {
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group.msgs.forEach(mInfo => {
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if (mInfo.msg._msgid !== msgInfo.msg._msgid) {
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mInfo.done();
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}
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});
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});
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node.pending = {};
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node.pending_count = 0;
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done(RED._("join.too-many"));
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@ -368,7 +413,8 @@ module.exports = function(RED) {
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completeProcess();
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}
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} else {
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node.send(msg);
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msgInfo.send(msg);
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msgInfo.done();
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done();
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}
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}
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@ -480,7 +526,9 @@ module.exports = function(RED) {
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delete group.msg.parts;
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}
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delete group.msg.complete;
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node.send(RED.util.cloneMessage(group.msg));
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group.send(RED.util.cloneMessage(group.msg));
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group.dones.forEach(f => f());
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group.dones = [];
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}
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var pendingMessages = [];
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@ -489,10 +537,10 @@ module.exports = function(RED) {
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// groups may overlap and cause unexpected results. The use of JSONata
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// means some async processing *might* occur if flow/global context is
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// accessed.
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var processReduceMessageQueue = function(msg) {
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if (msg) {
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var processReduceMessageQueue = function(msgInfo) {
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if (msgInfo) {
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// A new message has arrived - add it to the message queue
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pendingMessages.push(msg);
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pendingMessages.push(msgInfo);
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if (activeMessage !== null) {
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// The node is currently processing a message, so do nothing
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// more with this message
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@ -508,22 +556,23 @@ module.exports = function(RED) {
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// There are more messages to process. Get the next message and
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// start processing it. Recurse back in to check for any more
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var nextMsg = pendingMessages.shift();
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var nextMsgInfo = pendingMessages.shift();
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activeMessage = true;
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reduceMessage(node, nextMsg, err => {
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reduceMessage(node, nextMsgInfo, err => {
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if (err) {
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node.error(err,nextMsg);
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nextMsgInfo.done(err);//.error(err,nextMsg);
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}
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activeMessage = null;
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processReduceMessageQueue();
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})
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}
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this.on("input", function(msg) {
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this.on("input", function(msg, send, done) {
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try {
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var property;
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if (node.mode === 'auto' && (!msg.hasOwnProperty("parts")||!msg.parts.hasOwnProperty("id"))) {
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node.warn("Message missing msg.parts property - cannot join in 'auto' mode")
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done();
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return;
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}
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@ -535,6 +584,7 @@ module.exports = function(RED) {
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property = RED.util.getMessageProperty(msg,node.property);
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} catch(err) {
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node.warn("Message property "+node.property+" not found");
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done();
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return;
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}
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}
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@ -557,7 +607,7 @@ module.exports = function(RED) {
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propertyIndex = msg.parts.index;
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}
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else if (node.mode === 'reduce') {
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return processReduceMessageQueue(msg);
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return processReduceMessageQueue({msg, send, done});
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}
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else {
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// Use the node configuration to identify all of the group information
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@ -578,9 +628,11 @@ module.exports = function(RED) {
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if (inflight[partId].timeout) {
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clearTimeout(inflight[partId].timeout);
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}
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inflight[partId].dones.forEach(f => f());
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delete inflight[partId]
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}
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return
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done();
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return;
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}
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if ((payloadType === 'object') && (propertyKey === null || propertyKey === undefined || propertyKey === "")) {
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@ -591,6 +643,7 @@ module.exports = function(RED) {
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if (msg.hasOwnProperty('complete')) {
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if (inflight[partId]) {
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inflight[partId].msg.complete = msg.complete;
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inflight[partId].send = send;
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completeSend(partId);
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}
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}
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@ -598,6 +651,7 @@ module.exports = function(RED) {
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node.warn("Message missing key property 'msg."+node.key+"' - cannot add to object")
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}
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}
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done();
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return;
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}
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@ -608,7 +662,9 @@ module.exports = function(RED) {
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payload:{},
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targetCount:targetCount,
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type:"object",
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msg:RED.util.cloneMessage(msg)
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msg:RED.util.cloneMessage(msg),
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send: send,
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dones: []
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};
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}
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else {
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@ -617,7 +673,9 @@ module.exports = function(RED) {
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payload:[],
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targetCount:targetCount,
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type:payloadType,
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msg:RED.util.cloneMessage(msg)
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msg:RED.util.cloneMessage(msg),
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send: send,
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dones: []
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};
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if (payloadType === 'string') {
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inflight[partId].joinChar = joinChar;
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@ -634,6 +692,7 @@ module.exports = function(RED) {
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}, node.timer)
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}
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}
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inflight[partId].dones.push(done);
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var group = inflight[partId];
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if (payloadType === 'buffer') {
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@ -642,7 +701,7 @@ module.exports = function(RED) {
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inflight[partId].bufferLen += property.length;
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}
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else {
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node.error(RED._("join.errors.invalid-type",{error:(typeof property)}),msg);
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done(RED._("join.errors.invalid-type",{error:(typeof property)}));
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return;
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}
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}
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@ -676,6 +735,7 @@ module.exports = function(RED) {
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}
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}
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group.msg = Object.assign(group.msg, msg);
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group.send = send;
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var tcnt = group.targetCount;
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if (msg.hasOwnProperty("parts")) { tcnt = group.targetCount || msg.parts.count; }
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if ((tcnt > 0 && group.currentCount >= tcnt) || msg.hasOwnProperty('complete')) {
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@ -683,6 +743,7 @@ module.exports = function(RED) {
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}
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}
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catch(err) {
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done(err);
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console.log(err.stack);
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}
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});
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@ -691,6 +752,7 @@ module.exports = function(RED) {
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for (var i in inflight) {
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if (inflight.hasOwnProperty(i)) {
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clearTimeout(inflight[i].timeout);
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inflight[i].dones.forEach(d => d());
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}
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}
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});
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@ -1646,4 +1646,143 @@ describe('JOIN node', function() {
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});
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});
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describe('messaging API', function() {
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function mapiDoneSplitTestHelper(done, splt, spltType, stream, msgAndTimings) {
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const completeNode = require("nr-test-utils").require("@node-red/nodes/core/common/24-complete.js");
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const catchNode = require("nr-test-utils").require("@node-red/nodes/core/common/25-catch.js");
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const flow = [
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{ id: "splitNode1", type:"split", splt, spltType, stream, wires: [[]]},
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{ id: "completeNode1", type: "complete", scope: ["splitNode1"], uncaught: false, wires: [["helperNode1"]] },
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{ id: "catchNode1", type: "catch", scope: ["splitNode1"], uncaught: false, wires: [["helperNode1"]] },
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{ id: "helperNode1", type: "helper", wires: [[]] }];
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const numMsgs = msgAndTimings.length;
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helper.load([splitNode, completeNode, catchNode], flow, function () {
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const splitNode1 = helper.getNode("splitNode1");
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const helperNode1 = helper.getNode("helperNode1");
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RED.settings.nodeMessageBufferMaxLength = 2;
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const t = Date.now();
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||||
let c = 0;
|
||||
helperNode1.on("input", function (msg) {
|
||||
msg.should.have.a.property('payload');
|
||||
(Date.now() - t).should.be.approximately(msgAndTimings[msg.seq].avr, msgAndTimings[msg.seq].var);
|
||||
c += 1;
|
||||
if (c === numMsgs) {
|
||||
done();
|
||||
}
|
||||
});
|
||||
for (let i = 0; i < numMsgs; i++) {
|
||||
setTimeout(function () { splitNode1.receive(msgAndTimings[i].msg); }, msgAndTimings[i].delay);
|
||||
}
|
||||
});
|
||||
}
|
||||
it('should call done() when message is sent (string)', function (done) {
|
||||
mapiDoneSplitTestHelper(done, 2, "len", false, [
|
||||
{ msg: { seq: 0, payload: "12345" }, delay: 0, avr: 0, var: 100 },
|
||||
]);
|
||||
});
|
||||
it('should call done() when message is sent (array)', function (done) {
|
||||
mapiDoneSplitTestHelper(done, 2, "len", false, [
|
||||
{ msg: { seq: 0, payload: [0,1,2,3,4] }, delay: 0, avr: 0, var: 100 },
|
||||
]);
|
||||
});
|
||||
it('should call done() when message is sent (object)', function (done) {
|
||||
mapiDoneSplitTestHelper(done, 2, "len", false, [
|
||||
{ msg: { seq: 0, payload: {a:1,b:2}}, delay: 0, avr: 0, var: 100 },
|
||||
]);
|
||||
});
|
||||
it('should call done() when consolidated message is emitted (string, len)', function (done) {
|
||||
mapiDoneSplitTestHelper(done, 5, "len", true, [
|
||||
{ msg: { seq: 0, payload: "12"}, delay: 0, avr: 500, var: 100 },
|
||||
{ msg: { seq: 1, payload: "34"}, delay: 200, avr: 500, var: 100 },
|
||||
{ msg: { seq: 2, payload: "5"}, delay: 500, avr: 500, var: 100 }
|
||||
]);
|
||||
});
|
||||
it('should call done() when consolidated message is emitted (Buffer, len)', function (done) {
|
||||
mapiDoneSplitTestHelper(done, 5, "len", true, [
|
||||
{ msg: { seq: 0, payload: Buffer.from("12")}, delay: 0, avr: 500, var: 100 },
|
||||
{ msg: { seq: 1, payload: Buffer.from("34")}, delay: 200, avr: 500, var: 100 },
|
||||
{ msg: { seq: 2, payload: Buffer.from("5")}, delay: 500, avr: 500, var: 100 }
|
||||
]);
|
||||
});
|
||||
it('should call done() when consolidated message is emitted (Buffer, str)', function (done) {
|
||||
mapiDoneSplitTestHelper(done, "5", "str", true, [
|
||||
{ msg: { seq: 0, payload: Buffer.from("12")}, delay: 0, avr: 500, var: 100 },
|
||||
{ msg: { seq: 1, payload: Buffer.from("34")}, delay: 200, avr: 500, var: 100 },
|
||||
{ msg: { seq: 2, payload: Buffer.from("5")}, delay: 500, avr: 500, var: 100 }
|
||||
]);
|
||||
});
|
||||
it('should call done() when consolidated message is emitted (Buffer, bin)', function (done) {
|
||||
mapiDoneSplitTestHelper(done, "[53]", "bin", true, [
|
||||
{ msg: { seq: 0, payload: Buffer.from("12")}, delay: 0, avr: 500, var: 100 },
|
||||
{ msg: { seq: 1, payload: Buffer.from("34")}, delay: 200, avr: 500, var: 100 },
|
||||
{ msg: { seq: 2, payload: Buffer.from("5")}, delay: 500, avr: 500, var: 100 }
|
||||
]);
|
||||
});
|
||||
|
||||
function mapiDoneJoinTestHelper(done, joinNodeSetting, msgAndTimings) {
|
||||
const completeNode = require("nr-test-utils").require("@node-red/nodes/core/common/24-complete.js");
|
||||
const catchNode = require("nr-test-utils").require("@node-red/nodes/core/common/25-catch.js");
|
||||
const flow = [
|
||||
{ ...joinNodeSetting, id: "joinNode1", type:"join", wires: [[]]},
|
||||
{ id: "completeNode1", type: "complete", scope: ["joinNode1"], uncaught: false, wires: [["helperNode1"]] },
|
||||
{ id: "catchNode1", type: "catch", scope: ["joinNode1"], uncaught: false, wires: [["helperNode1"]] },
|
||||
{ id: "helperNode1", type: "helper", wires: [[]] }];
|
||||
const numMsgs = msgAndTimings.length;
|
||||
helper.load([joinNode, completeNode, catchNode], flow, function () {
|
||||
const joinNode1 = helper.getNode("joinNode1");
|
||||
const helperNode1 = helper.getNode("helperNode1");
|
||||
RED.settings.nodeMessageBufferMaxLength = 3;
|
||||
const t = Date.now();
|
||||
let c = 0;
|
||||
helperNode1.on("input", function (msg) {
|
||||
msg.should.have.a.property('payload');
|
||||
(Date.now() - t).should.be.approximately(msgAndTimings[msg.seq].avr, msgAndTimings[msg.seq].var);
|
||||
c += 1;
|
||||
if (c === numMsgs) {
|
||||
done();
|
||||
}
|
||||
});
|
||||
for (let i = 0; i < numMsgs; i++) {
|
||||
setTimeout(function () { joinNode1.receive(msgAndTimings[i].msg); }, msgAndTimings[i].delay);
|
||||
}
|
||||
});
|
||||
}
|
||||
it('should call done() when all messages are joined', function (done) {
|
||||
mapiDoneJoinTestHelper(done, {mode:"auto", timeout:1}, [
|
||||
{ msg: {seq:0, payload:"A", parts:{id:1, type:"string", ch:",", index:0, count:3}}, delay:0, avr:500, var:100},
|
||||
{ msg: {seq:1, payload:"B", parts:{id:1, type:"string", ch:",", index:1, count:3}}, delay:200, avr:500, var:100},
|
||||
{ msg: {seq:2, payload:"C", parts:{id:1, type:"string", ch:",", index:2, count:3}}, delay:500, avr:500, var:100}
|
||||
]);
|
||||
});
|
||||
it('should call done() when the node is reset', function (done) {
|
||||
mapiDoneJoinTestHelper(done, {mode:"auto", timeout:1}, [
|
||||
{ msg: {seq:0, payload:"A", parts:{id:1, type:"string", ch:",", index:0, count:3}}, delay:0, avr:500, var:100},
|
||||
{ msg: {seq:1, payload:"B", parts:{id:1, type:"string", ch:",", index:1, count:3}}, delay:200, avr:500, var:100},
|
||||
{ msg: {seq:2, payload:"dummy", reset: true, parts:{id:1}}, delay:500, avr:500, var:100}
|
||||
]);
|
||||
});
|
||||
it('should call done() when timed out', function (done) {
|
||||
mapiDoneJoinTestHelper(done, {mode:"custom", joiner:",", build:"string", timeout:0.5}, [
|
||||
{ msg: {seq:0, payload:"A"}, delay:0, avr:500, var:100},
|
||||
{ msg: {seq:1, payload:"B"}, delay:200, avr:500, var:100},
|
||||
]);
|
||||
});
|
||||
it('should call done() when all messages are reduced', function (done) {
|
||||
mapiDoneJoinTestHelper(done, {mode:"reduce", reduceRight:false, reduceExp:"$A+payload", reduceInit:"0",
|
||||
reduceInitType:"num", reduceFixup:undefined}, [
|
||||
{ msg: {seq:0, payload:3, parts: {index:2, count:3, id:222}}, delay:0, avr:500, var:100},
|
||||
{ msg: {seq:1, payload:2, parts: {index:1, count:3, id:222}}, delay:200, avr:500, var:100},
|
||||
{ msg: {seq:2, payload:4, parts: {index:0, count:3, id:222}}, delay:500, avr:500, var:100}
|
||||
]);
|
||||
});
|
||||
it('should call done() regardless of buffer overflow', function (done) {
|
||||
mapiDoneJoinTestHelper(done, {mode:"reduce", reduceRight:false, reduceExp:"$A+payload", reduceInit:"0",
|
||||
reduceInitType:"num", reduceFixup:undefined}, [
|
||||
{ msg: {seq:0, payload:3, parts: {index:2, count:5, id:222}}, delay:0, avr:600, var:100},
|
||||
{ msg: {seq:1, payload:2, parts: {index:1, count:5, id:222}}, delay:200, avr:600, var:100},
|
||||
{ msg: {seq:2, payload:4, parts: {index:0, count:5, id:222}}, delay:400, avr:600, var:100},
|
||||
{ msg: {seq:3, payload:1, parts: {index:3, count:5, id:222}}, delay:600, avr:600, var:100},
|
||||
]);
|
||||
});
|
||||
});
|
||||
});
|
||||
|
||||
Loading…
Reference in New Issue
Block a user