mirror of
https://github.com/node-red/node-red.git
synced 2023-10-10 13:36:53 +02:00
459 lines
20 KiB
JavaScript
459 lines
20 KiB
JavaScript
/**
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* Copyright JS Foundation and other contributors, http://js.foundation
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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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function sendArray(node,msg,array) {
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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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}
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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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node.c = 0;
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}
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else { node.remainder = array[i]; }
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}
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function SplitNode(n) {
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RED.nodes.createNode(this,n);
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var node = this;
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node.stream = n.stream;
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node.spltType = n.spltType || "str";
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node.addname = n.addname || false;
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node.addfname = n.addfname;
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try {
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if (node.spltType === "str") {
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this.splt = (n.splt || "\\n").replace(/\\n/,"\n").replace(/\\r/,"\r").replace(/\\t/,"\t").replace(/\\e/,"\e").replace(/\\f/,"\f").replace(/\\0/,"\0");
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} else if (node.spltType === "bin") {
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var spltArray = JSON.parse(n.splt);
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if (Array.isArray(spltArray)) {
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this.splt = Buffer.from(spltArray);
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} else {
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throw new Error("not an array");
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}
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this.spltBuffer = spltArray;
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} else if (node.spltType === "len") {
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this.splt = parseInt(n.splt);
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if (isNaN(this.splt) || this.splt < 1) {
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throw new Error("invalid split length: "+n.splt);
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}
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}
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this.arraySplt = (n.arraySplt === undefined)?1:parseInt(n.arraySplt);
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if (isNaN(this.arraySplt) || this.arraySplt < 1) {
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throw new Error("invalid array split length: "+n.arraySplt);
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}
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} catch(err) {
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this.error("Invalid split property: "+err.toString());
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return;
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}
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node.c = 0;
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node.buffer = new Buffer.from([]);
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this.on("input", function(msg) {
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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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msg.parts.id = msg._msgid; // use the existing _msgid by default.
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if (typeof msg.payload === "string") { // Split String into array
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msg.payload = (node.remainder || "") + msg.payload;
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msg.parts.type = "string";
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if (node.spltType === "len") {
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msg.parts.ch = "";
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var count = msg.payload.length/node.splt;
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if (Math.floor(count) !== count) {
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count = Math.ceil(count);
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}
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if (node.stream !== true) {
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msg.parts.count = count;
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node.c = 0;
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}
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var pos = 0;
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var data = msg.payload;
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for (var i=0; i<count-1; i++) {
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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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}
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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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node.remainder = "";
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}
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}
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else {
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var a = [];
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if (node.spltType === "bin") {
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if (!node.spltBufferString) {
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node.spltBufferString = node.splt.toString();
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}
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a = msg.payload.split(node.spltBufferString);
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msg.parts.ch = node.spltBuffer; // pass the split char to other end for rejoin
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} else if (node.spltType === "str") {
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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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}
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}
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else if (Array.isArray(msg.payload)) { // then split array into messages
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msg.parts.type = "array";
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var count = msg.payload.length/node.arraySplt;
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if (Math.floor(count) !== count) {
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count = Math.ceil(count);
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}
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msg.parts.count = count;
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var pos = 0;
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var data = msg.payload;
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msg.parts.len = node.arraySplt;
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for (var i=0; i<count; i++) {
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msg.payload = data.slice(pos,pos+node.arraySplt);
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if (node.arraySplt === 1) {
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msg.payload = msg.payload[0];
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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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}
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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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var l = Object.keys(msg.payload).length;
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var pay = msg.payload;
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msg.parts.type = "object";
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for (var p in pay) {
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if (pay.hasOwnProperty(p)) {
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msg.payload = pay[p];
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if (node.addname === true) { msg[node.addfname] = p; }
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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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j += 1;
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}
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}
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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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var buff = Buffer.concat([node.buffer, msg.payload], len);
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msg.parts.type = "buffer";
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if (node.spltType === "len") {
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var count = buff.length/node.splt;
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if (Math.floor(count) !== count) {
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count = Math.ceil(count);
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}
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if (node.stream !== true) {
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msg.parts.count = count;
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node.c = 0;
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}
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var pos = 0;
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msg.parts.len = node.splt;
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for (var i=0; i<count-1; i++) {
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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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}
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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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node.buffer = new Buffer.from([]);
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}
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}
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else {
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var count = 0;
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if (node.spltType === "bin") {
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msg.parts.ch = node.spltBuffer;
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} else if (node.spltType === "str") {
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msg.parts.ch = node.splt;
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}
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var pos = buff.indexOf(node.splt);
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var end;
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while (pos > -1) {
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count++;
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end = pos+node.splt.length;
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pos = buff.indexOf(node.splt,end);
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}
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count++;
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if (node.stream !== true) {
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msg.parts.count = count;
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node.c = 0;
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}
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var i = 0, p = 0;
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pos = buff.indexOf(node.splt);
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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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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 ((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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}
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else {
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node.buffer = buff.slice(p,buff.length);
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}
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}
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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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RED.nodes.registerType("split",SplitNode);
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function JoinNode(n) {
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RED.nodes.createNode(this,n);
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this.mode = n.mode||"auto";
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this.property = n.property||"payload";
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this.propertyType = n.propertyType||"msg";
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if (this.propertyType === 'full') {
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this.property = "payload";
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}
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this.key = n.key||"topic";
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this.timer = (this.mode === "auto") ? 0 : Number(n.timeout || 0)*1000;
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this.count = Number(n.count || 0);
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this.joiner = (n.joiner||"").replace(/\\n/g,"\n").replace(/\\r/g,"\r").replace(/\\t/g,"\t").replace(/\\e/g,"\e").replace(/\\f/g,"\f").replace(/\\0/g,"\0");
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this.build = n.build || "array";
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this.accumulate = n.accumulate || "false";
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//this.topic = n.topic;
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var node = this;
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var inflight = {};
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var completeSend = function(partId) {
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var group = inflight[partId];
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clearTimeout(group.timeout);
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if ((node.accumulate !== true) || group.msg.hasOwnProperty("complete")) { delete inflight[partId]; }
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if (group.type === 'array' && group.arrayLen > 1) {
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var newArray = [];
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group.payload.forEach(function(n) {
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newArray = newArray.concat(n);
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})
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group.payload = newArray;
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} else if (group.type === 'buffer') {
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var buffers = [];
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var bufferLen = 0;
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if (group.joinChar !== undefined) {
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var joinBuffer = Buffer.from(group.joinChar);
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for (var i=0; i<group.payload.length; i++) {
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if (i > 0) {
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buffers.push(joinBuffer);
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bufferLen += joinBuffer.length;
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}
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buffers.push(group.payload[i]);
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bufferLen += group.payload[i].length;
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}
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} else {
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bufferLen = group.bufferLen;
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buffers = group.payload;
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}
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group.payload = Buffer.concat(buffers,bufferLen);
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}
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if (group.type === 'string') {
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RED.util.setMessageProperty(group.msg,node.property,group.payload.join(group.joinChar));
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} else {
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RED.util.setMessageProperty(group.msg,node.property,group.payload);
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}
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if (group.msg.hasOwnProperty('parts') && group.msg.parts.hasOwnProperty('parts')) {
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group.msg.parts = group.msg.parts.parts;
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} else {
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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(group.msg);
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}
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this.on("input", function(msg) {
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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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return;
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}
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if (node.propertyType == "full") {
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property = msg;
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}
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else {
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try {
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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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return;
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}
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}
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var partId;
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var payloadType;
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var propertyKey;
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var targetCount;
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var joinChar;
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var arrayLen;
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var propertyIndex;
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if (node.mode === "auto") {
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// Use msg.parts to identify all of the group information
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partId = msg.parts.id;
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payloadType = msg.parts.type;
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targetCount = msg.parts.count;
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joinChar = msg.parts.ch;
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propertyKey = msg.parts.key;
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arrayLen = msg.parts.len;
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propertyIndex = msg.parts.index;
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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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partId = "_";
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payloadType = node.build;
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targetCount = node.count;
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joinChar = node.joiner;
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if (targetCount === 0 && msg.hasOwnProperty('parts')) {
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targetCount = msg.parts.count || 0;
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}
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if (node.build === 'object') {
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propertyKey = RED.util.getMessageProperty(msg,node.key);
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}
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}
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if ((payloadType === 'object') && (propertyKey === null || propertyKey === undefined || propertyKey === "")) {
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if (node.mode === "auto") {
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node.warn("Message missing 'msg.parts.key' property - cannot add to object");
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}
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else {
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if (msg.hasOwnProperty('complete')) {
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completeSend(partId);
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}
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else {
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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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return;
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}
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if (!inflight.hasOwnProperty(partId)) {
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if (payloadType === 'object' || payloadType === 'merged') {
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inflight[partId] = {
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currentCount:0,
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payload:{},
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targetCount:targetCount,
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type:"object",
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msg:msg
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};
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}
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else if (node.accumulate === true) {
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if (msg.hasOwnProperty("reset")) { delete inflight[partId]; }
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inflight[partId] = inflight[partId] || {
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currentCount:0,
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payload:{},
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targetCount:targetCount,
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type:payloadType,
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msg:msg
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}
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if (payloadType === 'string') {
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inflight[partId].payload = [];
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}
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}
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else {
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inflight[partId] = {
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currentCount:0,
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payload:[],
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targetCount:targetCount,
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type:payloadType,
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msg:msg
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};
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if (payloadType === 'string') {
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inflight[partId].joinChar = joinChar;
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} else if (payloadType === 'array') {
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inflight[partId].arrayLen = arrayLen;
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} else if (payloadType === 'buffer') {
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inflight[partId].bufferLen = 0;
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inflight[partId].joinChar = joinChar;
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}
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}
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if (node.timer > 0) {
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inflight[partId].timeout = setTimeout(function() {
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completeSend(partId)
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}, node.timer)
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}
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}
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var group = inflight[partId];
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if (payloadType === 'buffer') {
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inflight[partId].bufferLen += property.length;
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}
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if (payloadType === 'object') {
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group.payload[propertyKey] = property;
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group.currentCount = Object.keys(group.payload).length;
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//msg.topic = node.topic || msg.topic;
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} else if (payloadType === 'merged') {
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if (Array.isArray(property) || typeof property !== 'object') {
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if (!msg.hasOwnProperty("complete")) {
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node.warn("Cannot merge non-object types");
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}
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} else {
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for (propertyKey in property) {
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if (property.hasOwnProperty(propertyKey)) {
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group.payload[propertyKey] = property[propertyKey];
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}
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}
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group.currentCount = Object.keys(group.payload).length;
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//group.currentCount++;
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}
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} else {
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if (!isNaN(propertyIndex)) {
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group.payload[propertyIndex] = property;
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} else {
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group.payload.push(property);
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}
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group.currentCount++;
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}
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// TODO: currently reuse the last received - add option to pick first received
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group.msg = msg;
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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 (group.currentCount >= tcnt || msg.hasOwnProperty('complete')) {
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completeSend(partId);
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}
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} catch(err) {
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console.log(err.stack);
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}
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});
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this.on("close", function() {
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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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}
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}
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});
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}
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RED.nodes.registerType("join",JoinNode);
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}
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