From f66f33307d3d0ef319b03a256da4057837fcb619 Mon Sep 17 00:00:00 2001
From: einhornimmond <info@einhornimmond.de>
Date: Thu, 13 Nov 2025 08:36:09 +0100
Subject: [PATCH] hotfix restart gradido node if it don't get new transaction
 after 1 second

---
 .../client/GradidoNode/GradidoNodeProcess.ts  |  4 ++
 dlt-connector/src/client/hiero/HieroClient.ts | 24 +++++++++++
 dlt-connector/src/utils/time.ts               | 42 +++++++++++++++++++
 3 files changed, 70 insertions(+)
 create mode 100644 dlt-connector/src/utils/time.ts

diff --git a/dlt-connector/src/client/GradidoNode/GradidoNodeProcess.ts b/dlt-connector/src/client/GradidoNode/GradidoNodeProcess.ts
index eb2bf6b66..bedbedf38 100644
--- a/dlt-connector/src/client/GradidoNode/GradidoNodeProcess.ts
+++ b/dlt-connector/src/client/GradidoNode/GradidoNodeProcess.ts
@@ -97,6 +97,10 @@ export class GradidoNodeProcess {
     }
   }
 
+  public getLastStarted(): Date | null {
+    return this.lastStarted
+  }
+
   public async exit(): Promise<void> {
     this.exitCalled = true
     if (this.proc) {
diff --git a/dlt-connector/src/client/hiero/HieroClient.ts b/dlt-connector/src/client/hiero/HieroClient.ts
index 33a208b78..0ed375d62 100644
--- a/dlt-connector/src/client/hiero/HieroClient.ts
+++ b/dlt-connector/src/client/hiero/HieroClient.ts
@@ -22,6 +22,9 @@ import { CONFIG } from '../../config'
 import { LOG4JS_BASE_CATEGORY } from '../../config/const'
 import { HieroId, hieroIdSchema } from '../../schemas/typeGuard.schema'
 import { type TopicInfoOutput, topicInfoSchema } from './output.schema'
+import { GradidoNodeClient } from '../GradidoNode/GradidoNodeClient'
+import { GradidoNodeProcess } from '../GradidoNode/GradidoNodeProcess'
+import { printTimeDuration } from '../../utils/time'
 
 // https://docs.hedera.com/hedera/sdks-and-apis/hedera-api/consensus/consensusupdatetopic
 export const MIN_AUTORENEW_PERIOD = 6999999 //seconds
@@ -95,6 +98,27 @@ export class HieroClient {
           logger.info(
             `message sent to topic ${topicId}, transaction id: ${sendResponse.transactionId.toString()}`,
           )
+          // TODO: fix issue in GradidoNode
+          // hot fix, when gradido node is running some time, the hiero listener stop working, so we check if our new transaction is received
+          // after 1 second, else restart GradidoNode
+          setTimeout(async () => {
+            const transaction = await GradidoNodeClient.getInstance().getTransaction({
+              topic: topicId,
+              hieroTransactionId: sendResponse.transactionId.toString(),
+            })
+            if (!transaction) {
+              const process = GradidoNodeProcess.getInstance()
+              const lastStarted = process.getLastStarted()
+              if (lastStarted) {
+                const serverRunTime = printTimeDuration(new Date().getTime() - lastStarted.getTime())
+                this.logger.error(`transaction not found, restart GradidoNode after ${serverRunTime}`)
+                await GradidoNodeProcess.getInstance().restart()              
+              } else {
+                this.logger.error('transaction not found, GradidoNode not running, start it')
+                GradidoNodeProcess.getInstance().start()
+              }
+            }
+          }, 1000)
           if (logger.isInfoEnabled()) {
             // only for logging
             sendResponse.getReceiptWithSigner(this.wallet).then((receipt) => {
diff --git a/dlt-connector/src/utils/time.ts b/dlt-connector/src/utils/time.ts
new file mode 100644
index 000000000..ccbb91c07
--- /dev/null
+++ b/dlt-connector/src/utils/time.ts
@@ -0,0 +1,42 @@
+/**
+ * @param {number} time - in minutes
+ */
+export const getTimeDurationObject = (
+  time: number,
+): {
+  hours?: number
+  minutes: number
+} => {
+  if (time > 60) {
+    return {
+      hours: Math.floor(time / 60),
+      minutes: time % 60,
+    }
+  }
+  return { minutes: time }
+}
+
+/**
+ * @param startDate
+ * @param endDate
+ * @returns duration in minutes
+ */
+export const durationInMinutesFromDates = (startDate: Date, endDate: Date): number => {
+  const diff = endDate.getTime() - startDate.getTime()
+  return Math.floor(diff / (1000 * 60))
+}
+
+/**
+ * @param duration in minutes
+ */
+export const printTimeDuration = (duration: number): string => {
+  const time = getTimeDurationObject(duration)
+  const result = time.minutes > 0 ? `${time.minutes} minutes` : ''
+  if (time.hours) {
+    return `${time.hours} hours` + (result !== '' ? ` and ${result}` : '')
+  }
+  if (result === '') {
+    return '0 minutes'
+  }
+  return result
+}