Allow disabling part of the application so the app could be split int…

…o several processes

src/config.ts

@@ -17,6 +17,14 @@ class Config {
     return (process.env.BACKGROUND_JOBS_ENABLED && Boolean(process.env.BACKGROUND_JOBS_ENABLED)) || true
   }
 
+  get tracingApiEnabled() {
+    return (process.env.TRACING_API_ENABLED && Boolean(process.env.TRACING_API_ENABLED)) || true
+  }
+
+  get uiEnabled() {
+    return (process.env.UI_ENABLED && Boolean(process.env.UI_ENABLED)) || true
+  }
+
   get enrichmentJobBatchSize() {
     return (process.env.ENRICHMENT_JOB_BATCH_SIZE && Number(process.env.ENRICHMENT_JOB_BATCH_SIZE)) || 1000
   }

src/cron/analyze-errors.job.ts

@@ -16,8 +16,6 @@ export const analyzeNewTraces = new CronJob('0 * * * * *', async () => {
   isRunning = true
 
   try {
-    logger.debug('Enriching new traces')
-
     let tracesToAnalyze
     let offset = 0
     do {

src/index.ts

@@ -8,8 +8,6 @@ import { startCronJobs } from './cron'
 import { createDbConnection } from './db/pg'
 import { config } from './config'
 
-const trackingPort = config.trackingPort
-
 const httpServer = http.createServer(trackingApi)
 
 const uiPort = config.uiPort
@@ -36,15 +34,22 @@ const start = async () => {
     console.log('Error while trying to connect to db: ', err)
     process.exit(1)
   }
+
   console.log('Successfully connected to db')
 
-  httpServer.listen(trackingPort, () => {
-    console.log(`Tracking handler listening on port ${trackingPort}`)
-  })
+  if (config.tracingApiEnabled) {
+    const trackingPort = config.trackingPort
 
-  graphqlServer.listen(uiPort, () => {
-    console.log(`UI app listening on port ${uiPort}`)
-  })
+    httpServer.listen(trackingPort, () => {
+      console.log(`Tracking handler listening on port ${trackingPort}`)
+    })
+  }
+
+  if (config.uiEnabled) {
+    graphqlServer.listen(uiPort, () => {
+      console.log(`UI app listening on port ${uiPort}`)
+    })
+  }
 
   if (config.backgroundJobsEnabled) {
     startCronJobs()