Actual running flowserver on test panel LM 10.0.0.5
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rasta5man
commit
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57 changed files with 16678 additions and 0 deletions
551
flow/wsmqttpublish.js
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551
flow/wsmqttpublish.js
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exports.id = 'wsmqttpublish';
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exports.title = 'WS MQTT publish';
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exports.group = 'MQTT';
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exports.color = '#888600';
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exports.version = '1.0.2';
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exports.icon = 'sign-out';
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exports.input = 1;
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exports.output = ["red", "white", "blue"];
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exports.author = 'Daniel Segeš';
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exports.options = { host: 'tb-stage.worksys.io', port: 1883, clientid: "", username: "" };
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exports.npm = ['mqtt'];
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exports.html = `<div class="padding">
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<div class="row">
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<div class="col-md-6">
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<div data-jc="textbox" data-jc-path="host" data-jc-config="placeholder:test.mosquitto.org;required:false" class="m">Hostname or IP address (if not empty - setting will override db setting)</div>
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</div>
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<div class="col-md-6">
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<div data-jc="textbox" data-jc-path="port" data-jc-config="placeholder:1883;required:true" class="m">Port</div>
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</div>
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</div>
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<div class="row">
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<div class="col-md-6">
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<div data-jc="textbox" data-jc-path="clientid">@(Client id)</div>
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</div>
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<div class="col-md-6">
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<div data-jc="textbox" data-jc-path="username" class="m">@(Username)</div>
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</div>
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</div>
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</div>`;
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exports.readme = `
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# WS MQTT Publish
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Version 1.0.3.
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Added:
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- database collections,
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- rpc response
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`;
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const instanceSendTo = {
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debug: 0,
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rpcCall: 1,
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services: 2
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}
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const { promisifyBuilder, makeMapFromDbResult } = require('./helper/db_helper.js');
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//CONFIG
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let useLog4js = true;
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let createTelemetryBackup = true;
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let saveTelemetryOnError = true;//backup_on_failure overrides this value
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//------------------------
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var fs = require('fs');
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let rollers;
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if(createTelemetryBackup) rollers = require('streamroller');
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const noSqlFileSizeLimit = 4194304;//use 5MB - 4194304
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let insertNoSqlCounter = 0;
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let insertBackupNoSqlCounter = 0;
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let processingData = false;
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let backup_on_failure = false;//== saveTelemetryOnError - create backup broker send failure
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let restore_from_backup = 0; //how many rows process at once?
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let restore_backup_wait = 0;//wait seconds
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let lastRestoreTime = 0;
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let errLogger;
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let logger;
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let monitor;
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if(useLog4js)
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{
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var path = require('path');
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var log4js = require("log4js");
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log4js.configure({
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appenders: {
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errLogs: { type: 'file', filename: path.join(__dirname + "/../", 'err.txt') },
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monitorLogs: { type: 'file', compress:true, daysToKeep: 2, maxLogSize: 1048576, backups: 1, keepFileExt: true, filename: path.join(__dirname + "/../", 'monitor.txt') },
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console: { type: 'console' }
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},
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categories: {
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errLogs: { appenders: ['console', 'errLogs'], level: 'error' },
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monitorLogs: { appenders: ['console', 'monitorLogs'], level: 'trace' },
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//another: { appenders: ['console'], level: 'trace' },
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default: { appenders: ['console'], level: 'trace' }
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}
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});
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errLogger = log4js.getLogger("errLogs");
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logger = log4js.getLogger();
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monitor = log4js.getLogger("monitorLogs");
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//USAGE
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//logger.debug("text");
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//monitor.info('info');
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//errLogger.error("some error");
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}
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process.on('uncaughtException', function (err) {
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if(errLogger)
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{
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errLogger.error('uncaughtException:', err.message)
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errLogger.error(err.stack);
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}
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//TODO
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//send to service
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//process.exit(1);
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})
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const nosql = NOSQL('tbdata');
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const nosqlBackup = NOSQL('/backup/tbdata');
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exports.install = function(instance) {
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var broker;
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var opts;
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var brokerready = false;
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instance.on('options', loadSettings);
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mqtt = require('mqtt');
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// wsmqtt status for notification purposes on projects.worksys.io database
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let wsmqttName = null;
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let sendWsStatusVar = null;
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let wsmqtt_status = 'disconnected';
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function getWsmqttName(host)
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{
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if(host == "tb-demo.worksys.io" || host == '192.168.252.4') return 'wsmqtt_demo';
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else if(host == "tb-qas01.worksys.io" || host == '192.168.252.5') return 'wsmqtt_qas01';
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else if(host == "tb-prod01.worksys.io" || host == '192.168.252.1') return 'wsmqtt_prod01';
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}
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function sendWsStatus()
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{
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instance.send(instanceSendTo.services, {[wsmqttName]: wsmqtt_status});
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}
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sendWsStatusVar = setInterval(sendWsStatus, 180000);
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//set opts according to db settings
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async function loadSettings()
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{
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if(instance.options.host !== "")
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{
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//override settings from database
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var o = instance.options;
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opts = {
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host: o.host,
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port: o.port,
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clientId: o.clientid,
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username: o.username,
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rejectUnauthorized: false,
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resubscribe: false
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};
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wsmqttName = getWsmqttName(o.host);
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console.log("wsmqttpublich -> loadSettings from instance.options", instance.options);
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}
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else
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{
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const dbSettings = TABLE("settings");
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let responseSettings = await promisifyBuilder(dbSettings.find());
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backup_on_failure = responseSettings[0]["backup_on_failure"];
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saveTelemetryOnError = backup_on_failure;
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restore_from_backup = responseSettings[0]["restore_from_backup"];
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restore_backup_wait = responseSettings[0]["restore_backup_wait"];
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let mqtt_host = responseSettings[0]["mqtt_host"];
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let mqtt_clientid = responseSettings[0]["mqtt_clientid"];
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let mqtt_username = responseSettings[0]["mqtt_username"];
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let mqtt_port = responseSettings[0]["mqtt_port"];
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console.log("wsmqttpublich -> loadSettings from db", responseSettings[0]);
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opts = {
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host: mqtt_host,
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port: mqtt_port,
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keepalive: 10,
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clientId: mqtt_clientid,
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username: mqtt_username,
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rejectUnauthorized: false,
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resubscribe: false
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};
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wsmqttName = getWsmqttName(mqtt_host);
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}
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connectToTbServer();
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}
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function connectToTbServer()
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{
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var url = "mqtt://" + opts.host + ":" + opts.port;
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console.log("MQTT URL: ", url);
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broker = mqtt.connect(url, opts);
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broker.on('connect', function() {
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instance.status("Connected", "green");
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brokerready = true;
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FLOW.OMS_brokerready = brokerready;
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wsmqtt_status = 'connected';
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});
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broker.on('reconnect', function() {
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instance.status("Reconnecting", "yellow");
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brokerready = false;
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FLOW.OMS_brokerready = brokerready;
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});
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broker.on('message', function(topic, message) {
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// message is type of buffer
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message = message.toString();
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if (message[0] === '{') {
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TRY(function() {
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message = JSON.parse(message);
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if (message.hasOwnProperty("device") && message.hasOwnProperty("data") && message.data.hasOwnProperty("id")) {
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broker.publish(topic, `{"device": ${message.device}, "id": ${message.data.id}, "data": {"success": true}}`, {qos:1});
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instance.send(instanceSendTo.rpcCall, {"device": message.device, "id": message.data.id, "RPC response": {"success": true}});
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}
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}, () => instance.debug('MQTT: Error parsing data', message));
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}
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instance.send(instanceSendTo.rpcCall, {"topic":topic, "content":message });
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});
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broker.on('close', function(err) {
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brokerready = false;
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FLOW.OMS_brokerready = brokerready;
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wsmqtt_status = 'disconnected';
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if (err && err.toString().indexOf('Error')) {
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instance.status("Err: "+err.code, "red");
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instance.send(instanceSendTo.debug, {"message":"Broker CLOSE signal received !", "error":err, "opt":opts });
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} else {
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instance.status("Disconnected", "red");
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instance.send(instanceSendTo.debug, {"message":"Broker CLOSE signal received !", "error":err, "opt":opts });
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}
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});
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broker.on('error', function(err) {
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instance.status("Err: "+ err.code, "red");
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instance.send(instanceSendTo.debug, {"message":"Broker ERROR signal received !", "error":err, "opt":opts });
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brokerready = false;
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FLOW.OMS_brokerready = brokerready;
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wsmqtt_status = 'disconnected';
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});
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//broker = new Broker(opts);
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//MQTT_BROKERS.push(broker);
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//instance.status('Ready');
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}
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//set opts accortding to options
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/*
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instance.reconfigure = function() {
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var o = instance.options;
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opts = {
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host: o.host,
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port: o.port,
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keepalive: 10,
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clientId: o.clientid,
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username: o.username,
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rejectUnauthorized: false,
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resubscribe: false
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};
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//connectToTbServer();
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};
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*/
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instance.on('data', function(data) {
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if (brokerready)
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{
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//do we have some data in backup file?
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//if any, process data from database
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if(saveTelemetryOnError)
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{
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//read telemetry data and send back to server
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if(!processingData) processDataFromDatabase();
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}
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}
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if (brokerready)
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{
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let stringifiedJson = JSON.stringify(data.data);
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broker.publish("v1/gateway/telemetry", stringifiedJson, {qos: 1});
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//backup telemetry
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if(createTelemetryBackup)
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{
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data.data.id = UID();
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nosqlBackup.insert(data.data);
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insertBackupNoSqlCounter++;
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if(insertBackupNoSqlCounter > 150)
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{
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let options = {compress: true};
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let path = __dirname + "/../databases/backup/tbdata.nosql";
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var stream = new rollers.RollingFileStream(path, noSqlFileSizeLimit, 150, options);
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stream.write("");
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stream.end();
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insertBackupNoSqlCounter = 0;
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}
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}
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}
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else
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{
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if(logger) logger.debug("Broker unavailable. Data not sent !", data.data);
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instance.send(instanceSendTo.debug, {"message":"Broker unavailable. Data not sent !", "data": data.data });
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if(saveTelemetryOnError)
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{
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//create new file from tbdata.nosql, if file size exceeds given limit, and clear tbdata.nosql
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makeBackupFromDbFile();
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//write to tb
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data.data.id = UID();
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nosql.insert(data.data);
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}
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}
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});
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instance.close = function(done) {
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if (brokerready){
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broker.end();
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clearInterval(sendWsStatusVar);
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}
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};
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function getDbBackupFileCounter(type)
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{
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var files = fs.readdirSync(__dirname + "/../databases");
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let counter = 0;
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for(var i = 0; i < files.length; i++)
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{
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if(files[i] == "tbdata.nosql") continue;
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if(files[i].endsWith(".nosql"))
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{
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let pos = files[i].indexOf(".");
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if(pos > -1)
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{
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let fileCounter = counter;
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let firstDigit = files[i].slice(0, pos);
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fileCounter = parseInt(firstDigit);
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if (isNaN(fileCounter)) fileCounter = 0;
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//console.log("getDbBackupFileCounter digit:", files[i], firstDigit, fileCounter, isNaN(fileCounter), type);
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if(type == "max")
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{
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if(fileCounter > counter)
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{
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counter = fileCounter;
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}
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}
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else if(type == "min")
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{
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if(counter == 0) counter = fileCounter;
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if(fileCounter < counter)
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{
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counter = fileCounter;
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}
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}
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}
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}
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}
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if(type == "max") counter++;
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return counter;
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}
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const makeBackupFromDbFile = async () => {
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if(!saveTelemetryOnError) return;
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//to avoid large file: tbdata.nosql
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//init value is 0!
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if(insertNoSqlCounter > 0)
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{
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--insertNoSqlCounter;
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return;
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}
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insertNoSqlCounter = 100;
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let source = __dirname + "/../databases/tbdata.nosql";
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var stats = fs.statSync(source);
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var fileSizeInBytes = stats.size;
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if(fileSizeInBytes > noSqlFileSizeLimit)
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{
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let counter = 1;
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counter = getDbBackupFileCounter("max");
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let destination = __dirname + "/../databases/" + counter + "." + "tbdata.nosql";
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//make backup file
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fs.copyFileSync(source, destination);
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//fs.renameSync(p, p + "." + counter);
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//clear tbdata.nosql
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fs.writeFileSync(source, "");
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fs.truncateSync(source, 0);
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}
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}
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const processDataFromDatabase = async () => {
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if(restore_from_backup <= 0)
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{
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return;
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}
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//calculate diff
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const now = new Date();
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let currentTime = now.getTime();
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let diff = currentTime - lastRestoreTime;
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if( (diff / 1000) < restore_backup_wait)
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{
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//console.log("*********restore_backup_wait", diff, restore_backup_wait);
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return;
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}
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processingData = true;
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//get filename to process
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let counter = getDbBackupFileCounter("min");
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//we have some backup files
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let dataBase = 'tbdata';
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var nosql;
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if(counter == 0) dataBase = 'tbdata';
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else dataBase = counter + "." + 'tbdata';
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nosql = NOSQL(dataBase);
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//select all data - use limit restore_from_backup
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let records = await promisifyBuilder(nosql.find().take(restore_from_backup));
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for(let i = 0; i < records.length; i++)
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{
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if (brokerready) {
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||||
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let item = records[i];
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let id = item.id;
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||||
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||||
if(id !== undefined)
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||||
{
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//console.log("------------processDataFromDatabase - remove", id, dataBase, i);
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try{
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||||
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let o = JSON.parse(JSON.stringify(item));
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delete o.id;
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let message = JSON.stringify(o);
|
||||
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broker.publish("v1/gateway/telemetry", message, {qos:1});
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//remove from database
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await promisifyBuilder(nosql.remove().where("id", id));
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} catch (error) {
|
||||
//process error
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||||
console.log("processDataFromDatabase", error);
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||||
}
|
||||
|
||||
|
||||
}
|
||||
|
||||
}
|
||||
else
|
||||
{
|
||||
processingData = false;
|
||||
return;
|
||||
}
|
||||
}
|
||||
|
||||
if(records.length > 0)
|
||||
{
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||||
//clean backup file
|
||||
if(counter > 0) nosql.clean();
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||||
}
|
||||
|
||||
//no data in db, remove
|
||||
if(records.length == 0)
|
||||
{
|
||||
if(counter > 0) nosql.drop();
|
||||
}
|
||||
|
||||
const d = new Date();
|
||||
lastRestoreTime = d.getTime();
|
||||
|
||||
processingData = false;
|
||||
|
||||
}
|
||||
|
||||
loadSettings();
|
||||
|
||||
//instance.on('options', instance.reconfigure);
|
||||
//instance.reconfigure();
|
||||
};
|
||||
Loading…
Add table
Add a link
Reference in a new issue