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Merge pull request #3530 from Steve-Mcl/mqtt-payload-auto-parsing

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MQTT payload auto parsing improvements
This commit is contained in:
Nick O'Leary 2022-04-25 11:40:59 +01:00 committed by GitHub
commit c88a177cb2
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10 changed files with 305 additions and 33 deletions
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24
packages/node_modules/@node-red/nodes/core/network/10-mqtt.html vendored
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@ -65,6 +65,11 @@
/* opacity: 0.3;
pointer-events: none; */
}
.form-row.form-row-mqtt-datatype-tip > .form-tips {
width: calc(70% - 18px);
display: inline-block;
margin-top: -8px;
}
</style>
@ -121,6 +126,7 @@
<div class="form-row">
<label for="node-input-datatype"><i class="fa fa-sign-out"></i> <span data-i18n="mqtt.label.output"></span></label>
<select id="node-input-datatype" style="width:70%;">
<option value="auto-detect" data-i18n="mqtt.output.auto-detect"></option>
<option value="auto" data-i18n="mqtt.output.auto"></option>
<option value="buffer" data-i18n="mqtt.output.buffer"></option>
<option value="utf8" data-i18n="mqtt.output.string"></option>
@ -128,6 +134,10 @@
<option value="base64" data-i18n="mqtt.output.base64"></option>
</select>
</div>
<div class="form-row form-row-mqtt-datatype-tip">
<label> &nbsp; </label>
<div class="form-tips" id="mqtt-in-datatype-depreciated-tip"><span data-i18n="mqtt.label.auto-mode-depreciated"></span></div>
</div>
<div class="form-row">
<label for="node-input-name"><i class="fa fa-tag"></i> <span data-i18n="common.label.name"></span></label>
<input type="text" id="node-input-name" data-i18n="[placeholder]common.label.name">
@ -750,7 +760,7 @@
}
},
qos: {value: "2"},
datatype: {value:"auto",required:true},
datatype: {value:"auto-detect",required:true},
broker: {type:"mqtt-broker", required:true},
// subscriptionIdentifier: {value:0},
nl: {value:false},
@ -787,6 +797,16 @@
$("div.form-row-mqtt5").toggleClass("form-row-mqtt5-active",!!v5);
$("div.form-row.form-row-mqtt-static").toggleClass("form-row-mqtt-static-disabled", !!dynamic)
}
$("#node-input-datatype").on("change", function() {
if($(this).val() === "auto") {
$(".form-row.form-row-mqtt-datatype-tip").show();
} else {
$(".form-row.form-row-mqtt-datatype-tip").hide();
}
})
$("#node-input-datatype").trigger("change");
$("#node-input-broker").on("change",function(d){
updateVisibility();
});
@ -807,7 +827,7 @@
$("#node-input-qos").val("2");
}
if (this.datatype === undefined) {
$("#node-input-datatype").val("auto");
$("#node-input-datatype").val("auto-detect");
}
},
oneditsave: function() {

114
packages/node_modules/@node-red/nodes/core/network/10-mqtt.js vendored
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@ -20,7 +20,30 @@ module.exports = function(RED) {
var isUtf8 = require('is-utf8');
var HttpsProxyAgent = require('https-proxy-agent');
var url = require('url');
const knownMediaTypes = {
"text/css":"string",
"text/html":"string",
"text/plain":"string",
"text/html":"string",
"application/json":"json",
"application/octet-stream":"buffer",
"application/pdf":"buffer",
"application/x-gtar":"buffer",
"application/x-gzip":"buffer",
"application/x-tar":"buffer",
"application/xml":"string",
"application/zip":"buffer",
"audio/aac":"buffer",
"audio/ac3":"buffer",
"audio/basic":"buffer",
"audio/mp4":"buffer",
"audio/ogg":"buffer",
"image/bmp":"buffer",
"image/gif":"buffer",
"image/jpeg":"buffer",
"image/tiff":"buffer",
"image/png":"buffer",
}
//#region "Supporting functions"
function matchTopic(ts,t) {
if (ts == "#") {
@ -188,24 +211,7 @@ module.exports = function(RED) {
*/
function subscriptionHandler(node, datatype ,topic, payload, packet) {
const v5 = node.brokerConn.options && node.brokerConn.options.protocolVersion == 5;
if (datatype === "buffer") {
// payload = payload;
} else if (datatype === "base64") {
payload = payload.toString('base64');
} else if (datatype === "utf8") {
payload = payload.toString('utf8');
} else if (datatype === "json") {
if (isUtf8(payload)) {
payload = payload.toString();
try { payload = JSON.parse(payload); }
catch(e) { node.error(RED._("mqtt.errors.invalid-json-parse"),{payload:payload, topic:topic, qos:packet.qos, retain:packet.retain}); return; }
}
else { node.error((RED._("mqtt.errors.invalid-json-string")),{payload:payload, topic:topic, qos:packet.qos, retain:packet.retain}); return; }
} else {
if (isUtf8(payload)) { payload = payload.toString(); }
}
var msg = {topic:topic, payload:payload, qos:packet.qos, retain:packet.retain};
var msg = {topic:topic, payload:null, qos:packet.qos, retain:packet.retain};
if(v5 && packet.properties) {
setStrProp(packet.properties, msg, "responseTopic");
setBufferProp(packet.properties, msg, "correlationData");
@ -215,6 +221,76 @@ module.exports = function(RED) {
setStrProp(packet.properties, msg, "reasonString");
setUserProperties(packet.properties.userProperties, msg);
}
const v5isUtf8 = v5 ? msg.payloadFormatIndicator === true : null;
const v5HasMediaType = v5 ? !!msg.contentType : null;
const v5MediaTypeLC = v5 ? (msg.contentType + "").toLowerCase() : null;
if (datatype === "buffer") {
// payload = payload;
} else if (datatype === "base64") {
payload = payload.toString('base64');
} else if (datatype === "utf8") {
payload = payload.toString('utf8');
} else if (datatype === "json") {
if (v5isUtf8 || isUtf8(payload)) {
try {
payload = JSON.parse(payload.toString());
} catch (e) {
node.error(RED._("mqtt.errors.invalid-json-parse"), { payload: payload, topic: topic, qos: packet.qos, retain: packet.retain }); return;
}
} else {
node.error((RED._("mqtt.errors.invalid-json-string")), { payload: payload, topic: topic, qos: packet.qos, retain: packet.retain }); return;
}
} else {
//"auto" (legacy) or "auto-detect" (new default)
if (v5isUtf8 || v5HasMediaType) {
const outputType = knownMediaTypes[v5MediaTypeLC]
switch (outputType) {
case "string":
payload = payload.toString();
break;
case "buffer":
//no change
break;
case "json":
try {
//since v5 type states this should be JSON, parse it & error out if NOT JSON
payload = payload.toString()
const obj = JSON.parse(payload);
if (datatype === "auto-detect") {
payload = obj; //as mode is "auto-detect", return the parsed JSON
}
} catch (e) {
node.error(RED._("mqtt.errors.invalid-json-parse"), { payload: payload, topic: topic, qos: packet.qos, retain: packet.retain }); return;
}
break;
default:
if (v5isUtf8 || isUtf8(payload)) {
payload = payload.toString(); //auto String
if (datatype === "auto-detect") {
try {
payload = JSON.parse(payload); //auto to parsed object (attempt)
} catch (e) {
/* mute error - it simply isnt JSON, just leave payload as a string */
}
}
}
break;
}
} else if (isUtf8(payload)) {
payload = payload.toString(); //auto String
if (datatype === "auto-detect") {
try {
payload = JSON.parse(payload);
} catch (e) {
/* mute error - it simply isnt JSON, just leave payload as a string */
}
}
} //else {
//leave as buffer
//}
}
msg.payload = payload;
if ((node.brokerConn.broker === "localhost")||(node.brokerConn.broker === "127.0.0.1")) {
msg._topic = topic;
}

1
packages/node_modules/@node-red/nodes/locales/de/messages.json vendored
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@ -423,6 +423,7 @@
"string": "Ein String",
"base64": "Ein Base64-kodierter String",
"auto": "Auto-Erkennung (string oder buffer)",
"auto-detect": "Auto-Erkennung (parsed JSON-Objekt, string oder buffer)",
"json": "Ein analysiertes (parsed) JSON-Objekt"
},
"true": "wahr",

4
packages/node_modules/@node-red/nodes/locales/en-US/messages.json vendored
View File

@ -424,7 +424,8 @@
"action": "Action",
"staticTopic": "Subscribe to single topic",
"dynamicTopic": "Dynamic subscription",
"auto-connect": "Connect automatically"
"auto-connect": "Connect automatically",
"auto-mode-depreciated": "This option is depreciated. Please use the new auto-detect mode."
},
"sections-label":{
"birth-message": "Message sent on connection (birth message)",
@ -455,6 +456,7 @@
"string": "a String",
"base64": "a Base64 encoded string",
"auto": "auto-detect (string or buffer)",
"auto-detect": "auto-detect (parsed JSON object, string or buffer)",
"json": "a parsed JSON object"
},
"true": "true",

1
packages/node_modules/@node-red/nodes/locales/ja/messages.json vendored
View File

@ -455,6 +455,7 @@
"string": "文字列",
"base64": "Base64文字列",
"auto": "自動判定(文字列もしくはバイナリバッファ)",
"auto-detect": "自動判定(JSONオブジェクト、文字列もしくはバイナリバッファ)",
"json": "JSONオブジェクト"
},
"true": "する",

1
packages/node_modules/@node-red/nodes/locales/ko/messages.json vendored
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@ -362,6 +362,7 @@
"string": "문자열",
"base64": "Base64문자열",
"auto": "자동판정(문자열혹은 바이너리버퍼)",
"auto-detect": "자동판정(JSON오브젝트, 문자열혹은 바이너리버퍼)",
"json": "JSON오브젝트"
},
"true": "한다",

1
packages/node_modules/@node-red/nodes/locales/ru/messages.json vendored
View File

@ -385,6 +385,7 @@
"string": "строка",
"base64": "строка в кодировке Base64",
"auto": "автоопределение (строка или буфер)",
"auto-detect": "автоопределение (разобрать объект JSON, строка или буфер)",
"json": "объект JSON"
},
"true": "да",

1
packages/node_modules/@node-red/nodes/locales/zh-CN/messages.json vendored
View File

@ -382,6 +382,7 @@
"string": "字符串",
"base64": "Base64编码字符串",
"auto": "自动检测 (字符串或buffer)",
"auto-detect": "自动检测 (已解析的JSON对象、字符串或buffer)",
"json": "解析的JSON对象"
},
"true": "是",

1
packages/node_modules/@node-red/nodes/locales/zh-TW/messages.json vendored
View File

@ -386,6 +386,7 @@
"string": "字串",
"base64": "Base64編碼字串",
"auto": "自動檢測 (字符串或buffer)",
"auto-detect": "自动检测 (已解析的JSON对象、字符串或buffer)",
"json": "解析的JSON對象"
},
"true": "是",

190
test/nodes/core/network/21-mqtt_spec.js
View File

@ -4,6 +4,7 @@
"use strict";
const should = require("should");
const helper = require("node-red-node-test-helper");
const { doesNotThrow } = require("should");
const mqttNodes = require("nr-test-utils").require("@node-red/nodes/core/network/10-mqtt.js");
const BROKER_HOST = process.env.MQTT_BROKER_SERVER || "localhost";
const BROKER_PORT = process.env.MQTT_BROKER_PORT || 1883;
@ -92,7 +93,8 @@ describe('MQTT Nodes', function () {
options.expectMsg = Object.assign({}, options.sendMsg);
testSendRecv({}, { datatype: "auto", topicType: "static" }, {}, options, { done: done });
});
itConditional('should send JSON and receive string (auto)', function (done) {
//Prior to V3, "auto" mode would only parse to string or buffer.
itConditional('should send JSON and receive string (auto mode)', function (done) {
if (skipTests) { return this.skip() }
this.timeout = 2000;
const options = {}
@ -104,7 +106,44 @@ describe('MQTT Nodes', function () {
options.expectMsg = Object.assign({}, options.sendMsg);
testSendRecv({}, { datatype: "auto", topicType: "static" }, {}, options, { done: done });
})
itConditional('should send JSON and receive string (utf8)', function (done) {
//In V3, "auto" mode should try to parse JSON, then string and fall back to buffer
itConditional('should send JSON and receive object (auto-detect mode)', function (done) {
if (skipTests) { return this.skip() }
this.timeout = 2000;
const options = {}
options.sendMsg = {
topic: nextTopic(),
payload: '{"prop":"value1", "num":1}',
qos: 1
}
options.expectMsg = Object.assign({}, options.sendMsg);
options.expectMsg.payload = JSON.parse(options.sendMsg.payload);
testSendRecv({}, { datatype: "auto-detect", topicType: "static" }, {}, options, { done: done });
})
itConditional('should send invalid JSON and receive string (auto mode)', function (done) {
if (skipTests) { return this.skip() }
this.timeout = 2000;
const options = {}
options.sendMsg = {
topic: nextTopic(),
payload: '{prop:"value3", "num":3}'// send invalid JSON ...
}
options.expectMsg = Object.assign({}, options.sendMsg);//expect same payload
testSendRecv({}, { datatype: "auto", topicType: "static" }, {}, options, { done: done });
});
itConditional('should send invalid JSON and receive string (auto-detect mode)', function (done) {
if (skipTests) { return this.skip() }
this.timeout = 2000;
const options = {}
options.sendMsg = {
topic: nextTopic(),
payload: '{prop:"value3", "num":3}'// send invalid JSON ...
}
options.expectMsg = Object.assign({}, options.sendMsg);//expect same payload
testSendRecv({}, { datatype: "auto-detect", topicType: "static" }, {}, options, { done: done });
});
itConditional('should send JSON and receive string (utf8 mode)', function (done) {
if (skipTests) { return this.skip() }
this.timeout = 2000;
const options = {}
@ -116,7 +155,7 @@ describe('MQTT Nodes', function () {
options.expectMsg = Object.assign({}, options.sendMsg);
testSendRecv({}, { datatype: "utf8", topicType: "static" }, {}, options, { done: done });
});
itConditional('should send JSON and receive Object (json)', function (done) {
itConditional('should send JSON and receive Object (json mode)', function (done) {
if (skipTests) { return this.skip() }
this.timeout = 2000;
const options = {}
@ -127,7 +166,31 @@ describe('MQTT Nodes', function () {
options.expectMsg = Object.assign({}, options.sendMsg, { payload: { "prop": "value3", "num": 3 } });//expect an object
testSendRecv({}, { datatype: "json", topicType: "static" }, {}, options, { done: done });
});
itConditional('should send String and receive Buffer (buffer)', function (done) {
itConditional('should send invalid JSON and raise error (json mode)', function (done) {
if (skipTests) { return this.skip() }
this.timeout = 2000;
const options = {}
options.sendMsg = {
topic: nextTopic(),
payload: '{prop:"value3", "num":3}', // send invalid JSON ...
}
const hooks = { done: done, beforeLoad: null, afterLoad: null, afterConnect: null }
hooks.afterLoad = (helperNode, mqttBroker, mqttIn, mqttOut) => {
helperNode.on("input", function (msg) {
try {
msg.should.have.a.property("error").type("object");
msg.error.should.have.a.property("source").type("object");
msg.error.source.should.have.a.property("id", mqttIn.id);
done();
} catch (err) {
done(err)
}
});
return true; //handled
}
testSendRecv({}, { datatype: "json", topicType: "static" }, {}, options, hooks);
});
itConditional('should send String and receive Buffer (buffer mode)', function (done) {
if (skipTests) { return this.skip() }
this.timeout = 2000;
const options = {}
@ -138,7 +201,7 @@ describe('MQTT Nodes', function () {
options.expectMsg = Object.assign({}, options.sendMsg, { payload: Buffer.from(options.sendMsg.payload) });//expect Buffer.from(msg.payload)
testSendRecv({}, { datatype: "buffer", topicType: "static" }, {}, options, { done: done });
});
itConditional('should send utf8 Buffer and receive String (auto)', function (done) {
itConditional('should send utf8 Buffer and receive String (auto mode)', function (done) {
if (skipTests) { return this.skip() }
this.timeout = 2000;
const options = {}
@ -149,7 +212,7 @@ describe('MQTT Nodes', function () {
options.expectMsg = Object.assign({}, options.sendMsg, { payload: "x y z" });//set expected payload to "x y z"
testSendRecv({}, { datatype: "auto", topicType: "static" }, {}, options, { done: done });
});
itConditional('should send non utf8 Buffer and receive Buffer (auto)', function (done) {
itConditional('should send non utf8 Buffer and receive Buffer (auto mode)', function (done) {
if (skipTests) { return this.skip() }
this.timeout = 2000;
const options = {}
@ -158,7 +221,7 @@ describe('MQTT Nodes', function () {
topic: nextTopic(),
payload: Buffer.from([0xC0, 0xC1, 0xF5, 0xF6, 0xF7, 0xF8, 0xF9, 0xFA, 0xFB, 0xFC, 0xFD, 0xFE, 0xFF]) //non valid UTF8
}
options.expectMsg = Object.assign({}, options.sendMsg);
options.expectMsg = Object.assign({}, options.sendMsg, {payload: Buffer.from([0xC0, 0xC1, 0xF5, 0xF6, 0xF7, 0xF8, 0xF9, 0xFA, 0xFB, 0xFC, 0xFD, 0xFE, 0xFF])});
testSendRecv({}, { datatype: "auto", topicType: "static" }, {}, options, hooks);
});
itConditional('should send/receive all v5 flags and settings', function (done) {
@ -168,16 +231,16 @@ describe('MQTT Nodes', function () {
const options = {}
const hooks = { done: done, beforeLoad: null, afterLoad: null, afterConnect: null }
options.sendMsg = {
topic: t + "/command", payload: Buffer.from("v5"), qos: 1, retain: true,
topic: t + "/command", payload: Buffer.from('{"version":"v5"}'), qos: 1, retain: true,
responseTopic: t + "/response",
userProperties: { prop1: "val1" },
contentType: "application/json",
contentType: "text/plain",
correlationData: Buffer.from([1, 2, 3]),
payloadFormatIndicator: true,
messageExpiryInterval: 2000,
}
options.expectMsg = Object.assign({}, options.sendMsg);
options.expectMsg.payload = options.expectMsg.payload.toString(); //auto mode + payloadFormatIndicator should make a string
options.expectMsg.payload = options.expectMsg.payload.toString(); //auto mode + payloadFormatIndicator + contentType: "text/plain" should make a string
delete options.expectMsg.payloadFormatIndicator; //Seems mqtt.js only publishes payloadFormatIndicator the will msg
const inOptions = {
datatype: "auto", topicType: "static",
@ -185,6 +248,109 @@ describe('MQTT Nodes', function () {
}
testSendRecv({ protocolVersion: 5 }, inOptions, {}, options, hooks);
});
itConditional('should send regular string with v5 media type "text/plain" and receive a string (auto mode)', function (done) {
if (skipTests) { return this.skip() }
this.timeout = 2000;
const options = {}
const hooks = { done: done, beforeLoad: null, afterLoad: null, afterConnect: null }
options.sendMsg = {
topic: nextTopic(), payload: "abc", contentType: "text/plain"
}
options.expectMsg = Object.assign({}, options.sendMsg);
testSendRecv({ protocolVersion: 5 }, { datatype: "auto", topicType: "static" }, {}, options, hooks);
});
itConditional('should send JSON with v5 media type "text/plain" and receive a string (auto mode)', function (done) {
if (skipTests) { return this.skip() }
this.timeout = 2000;
const options = {}
const hooks = { done: done, beforeLoad: null, afterLoad: null, afterConnect: null }
options.sendMsg = {
topic: nextTopic(), payload: '{"prop":"val"}', contentType: "text/plain"
}
options.expectMsg = Object.assign({}, options.sendMsg);
testSendRecv({ protocolVersion: 5 }, { datatype: "auto", topicType: "static" }, {}, options, hooks);
});
itConditional('should send JSON with v5 media type "text/plain" and receive a string (auto-detect mode)', function (done) {
if (skipTests) { return this.skip() }
this.timeout = 2000;
const options = {}
const hooks = { done: done, beforeLoad: null, afterLoad: null, afterConnect: null }
options.sendMsg = {
topic: nextTopic(), payload: '{"prop":"val"}', contentType: "text/plain"
}
options.expectMsg = Object.assign({}, options.sendMsg);
testSendRecv({ protocolVersion: 5 }, { datatype: "auto-detect", topicType: "static" }, {}, options, hooks);
});
itConditional('should send JSON with v5 media type "application/json" and receive an object (auto-detect mode)', function (done) {
if (skipTests) { return this.skip() }
this.timeout = 2000;
const options = {}
const hooks = { done: done, beforeLoad: null, afterLoad: null, afterConnect: null }
options.sendMsg = {
topic: nextTopic(), payload: '{"prop":"val"}', contentType: "application/json",
}
options.expectMsg = Object.assign({}, options.sendMsg, { payload: JSON.parse(options.sendMsg.payload)});
testSendRecv({ protocolVersion: 5 }, { datatype: "auto-detect", topicType: "static" }, {}, options, hooks);
});
itConditional('should send invalid JSON with v5 media type "application/json" and raise an error (auto mode)', function (done) {
if (skipTests) { return this.skip() }
this.timeout = 2000;
const options = {}
options.sendMsg = {
topic: nextTopic(),
payload: '{prop:"value3", "num":3}', contentType: "application/json", // send invalid JSON ...
}
const hooks = { done: done, beforeLoad: null, afterLoad: null, afterConnect: null }
hooks.afterLoad = (helperNode, mqttBroker, mqttIn, mqttOut) => {
helperNode.on("input", function (msg) {
try {
msg.should.have.a.property("error").type("object");
msg.error.should.have.a.property("source").type("object");
msg.error.source.should.have.a.property("id", mqttIn.id);
done();
} catch (err) {
done(err)
}
});
return true; //handled
}
testSendRecv({ protocolVersion: 5 }, { datatype: "auto", topicType: "static" }, {}, options, hooks);
});
itConditional('should send buffer with v5 media type "application/json" and receive an object (auto-detect mode)', function (done) {
if (skipTests) { return this.skip() }
this.timeout = 2000;
const options = {}
const hooks = { done: done, beforeLoad: null, afterLoad: null, afterConnect: null }
options.sendMsg = {
topic: nextTopic(), payload: Buffer.from([0x7b,0x22,0x70,0x72,0x6f,0x70,0x22,0x3a,0x22,0x76,0x61,0x6c,0x22,0x7d]), contentType: "application/json",
}
options.expectMsg = Object.assign({}, options.sendMsg, { payload: {"prop":"val"}});
testSendRecv({ protocolVersion: 5 }, { datatype: "auto-detect", topicType: "static" }, {}, options, hooks);
});
itConditional('should send buffer with v5 media type "text/plain" and receive a string (auto mode)', function (done) {
if (skipTests) { return this.skip() }
this.timeout = 2000;
const options = {}
const hooks = { done: done, beforeLoad: null, afterLoad: null, afterConnect: null }
options.sendMsg = {
topic: nextTopic(), payload: Buffer.from([0x7b,0x22,0x70,0x72,0x6f,0x70,0x22,0x3a,0x22,0x76,0x61,0x6c,0x22,0x7d]), contentType: "text/plain",
}
options.expectMsg = Object.assign({}, options.sendMsg, { payload: '{"prop":"val"}'});
testSendRecv({ protocolVersion: 5 }, { datatype: "auto", topicType: "static" }, {}, options, hooks);
});
itConditional('should send buffer with v5 media type "application/zip" and receive a buffer (auto mode)', function (done) {
if (skipTests) { return this.skip() }
this.timeout = 2000;
const options = {}
const hooks = { done: done, beforeLoad: null, afterLoad: null, afterConnect: null }
options.sendMsg = {
topic: nextTopic(), payload: Buffer.from([0x7b,0x22,0x70,0x72,0x6f,0x70,0x22,0x3a,0x22,0x76,0x61,0x6c,0x22,0x7d]), contentType: "application/zip",
}
options.expectMsg = Object.assign({}, options.sendMsg, { payload: Buffer.from([0x7b,0x22,0x70,0x72,0x6f,0x70,0x22,0x3a,0x22,0x76,0x61,0x6c,0x22,0x7d])});
testSendRecv({ protocolVersion: 5 }, { datatype: "auto", topicType: "static" }, {}, options, hooks);
});
itConditional('should subscribe dynamically via action', function (done) {
if (skipTests) { return this.skip() }
this.timeout = 2000;
@ -463,14 +629,16 @@ function buildBasicMQTTSendRecvFlow(brokerOptions, inOptions, outOptions) {
const inNode = buildMQTTInNode(inOptions.id, inOptions.name, inOptions.broker || broker.id, inOptions.topic, inOptions, ["helper.node"]);
const outNode = buildMQTTOutNode(outOptions.id, outOptions.name, outOptions.broker || broker.id, outOptions.topic, outOptions);
const helper = buildNode("helper", "helper.node", "helper_node", {});
const catchNode = buildNode("catch", "catch.node", "catch_node", {"scope": ["mqtt.in"]}, ["helper.node"]);
return {
nodes: {
[broker.name]: broker,
[inNode.name]: inNode,
[outNode.name]: outNode,
[helper.name]: helper,
[catchNode.name]: catchNode,
},
flow: [broker, inNode, outNode, helper]
flow: [broker, inNode, outNode, helper, catchNode]
}
}