БУР-68 Добавил обработку ECONNREFUSED и сохранение сервиса живым

app/src/cloud-ingest.ts

@@ -1,4 +1,5 @@
 export const cloudIngestUrl = process.env.CLOUD_INGEST_URL as string
+export const demoCloudIngestUrl = process.env.DEMO_CLOUD_INGEST_URL as string
 
 export function postCloudIngest(body: unknown): Promise<Response> {
   return fetch(cloudIngestUrl, {
@@ -10,3 +11,14 @@ export function postCloudIngest(body: unknown): Promise<Response> {
     body: JSON.stringify(body),
   })
 }
+
+export function postDemoCloudIngest(body: unknown): Promise<Response> {
+  return fetch(demoCloudIngestUrl, {
+    method: 'POST',
+    headers: {
+      'content-type': 'application/json',
+      'x-api-key': process.env.CLOUD_INGEST_API_KEY as string,
+    },
+    body: JSON.stringify(body),
+  })
+}

app/src/handlers/edge5-modbus-v3.ts

@@ -1,4 +1,4 @@
-import { postCloudIngest } from '../cloud-ingest.js'
+import { postCloudIngest, postDemoCloudIngest } from '../cloud-ingest.js'
 import { log } from '../helpers/log.js'
 import type { TopicHandler } from '../types.js'
 
@@ -36,10 +36,10 @@ type Edge5ModbusV3Metric = {
   edge: string
   timestamp: string
   tag: string
-  value: number
+  value: number | null
 }
 
-function toFloatCDAB(reg0: number, reg1: number): number {
+function toFloatCDAB(reg0: number, reg1: number): number | null {
   const buf = Buffer.allocUnsafe(4)
   buf.writeUInt16BE(reg1, 0)
   buf.writeUInt16BE(reg0, 2)
@@ -63,16 +63,7 @@ function toMetrics(values: number[], timestamp: string): Edge5ModbusV3Metric[] {
 
   for (let i = 0; i < values.length; i += 2) {
     const tag = TAGS[i / 2]
-    const value = toFloatCDAB(values[i], values[i + 1])
-    if (isNaN(value)) {
-      if (CLOUD_INGEST_TAGS.has(tag)) {
-        log(
-          `edge5.modbus.v3: не удалось собрать число для ${tag}, ` +
-            `исходные values[${i}]=${values[i]}, values[${i + 1}]=${values[i + 1]}, пропуск`,
-        )
-      }
-      continue
-    }
+    const value = toFloatCDAB(values[i], values[i + 1]); // null is possible to send
 
     metrics.push({
       edge: EDGE,
@@ -97,6 +88,9 @@ async function postMetrics(metrics: Edge5ModbusV3Metric[]): Promise<void> {
         const text = await response.text()
         throw new Error(text || `${response.status} ${response.statusText}`)
       }
+
+      void postDemoCloudIngest(metric); // для демо-системы
+
     } catch (error) {
       const message = error instanceof Error ? error.message : String(error)
       errors.push(new Error(`${metric.tag}: ${message}`))
@@ -104,7 +98,7 @@ async function postMetrics(metrics: Edge5ModbusV3Metric[]): Promise<void> {
     }
   }
 
-  log('edge5.modbus.v3.posted', { total: toPost.length });
+  log(`edge5.modbus.v3.data ↑ ${toPost.length} tags`);
 
   if (errors.length) {
     throw new Error(`Failed to post ${errors.length}/${toPost.length} edge5 modbus v3 metrics`)
@@ -113,8 +107,6 @@ async function postMetrics(metrics: Edge5ModbusV3Metric[]): Promise<void> {
 
 export const handleEdge5ModbusV3: TopicHandler = async (topic, payload) => {
   const timestamp = new Date().toISOString();
-  log('edge5.modbus.v3.received', { topic, bytes: payload.length, timestamp })
-
   const values = parseValues(payload);
   const metrics = toMetrics(values, timestamp);
   await postMetrics(metrics);

app/src/handlers/edge5cdab-modbus.ts

@@ -9,10 +9,10 @@ type Edge5iiModbusMetric = {
   edge: string
   timestamp: string
   tag: string
-  value: number
+  value: number | null
 };
 
-function toFloatCDAB(reg0: number, reg1: number): number {
+function toFloatCDAB(reg0: number, reg1: number): number | null {
   const buf = Buffer.allocUnsafe(4)
   buf.writeUInt16BE(reg1, 0)
   buf.writeUInt16BE(reg0, 2)
@@ -36,14 +36,7 @@ function toMetrics(values: number[], timestamp: string): Edge5iiModbusMetric[] {
 
   for (let i = 0; i < values.length; i += 2) {
     const tag = `register-${String(i).padStart(3, '0')}`
-    const value = toFloatCDAB(values[i], values[i + 1])
-    if (isNaN(value)) {
-      log(
-        `${EDGE}.modbus: не удалось собрать число для ${tag}, ` +
-          `исходные values[${i}]=${values[i]}, values[${i + 1}]=${values[i + 1]}, пропуск`,
-      )
-      continue
-    };
+    const value = toFloatCDAB(values[i], values[i + 1]); // null is possible to send
 
     metrics.push({
       edge: EDGE,

app/src/index.ts

@@ -1,3 +1,4 @@
+import './process-errors.js'
 import './handlers/index.js'
 import './http/server.js'
 import './mqtt.js'

app/src/process-errors.ts

@@ -0,0 +1,57 @@
+type ErrorWithCause = Error & {
+  cause?: unknown
+}
+
+type NodeError = Error & {
+  code?: string
+  address?: string
+  port?: number
+}
+
+// Undici кладёт системную ошибку соединения внутрь error.cause.
+function getFetchCause(error: unknown): NodeError | null {
+  if (!(error instanceof Error)) {
+    return null
+  }
+
+  const cause = (error as ErrorWithCause).cause
+  return cause instanceof Error ? (cause as NodeError) : null
+}
+
+// Обрабатываем только подсвеченный кейс: backend отказал в TCP-соединении.
+function isFetchConnectionRefused(error: unknown): boolean {
+  if (!(error instanceof Error)) {
+    return false
+  }
+
+  const cause = getFetchCause(error)
+  return error.message === 'fetch failed' && cause?.code === 'ECONNREFUSED'
+}
+
+// Логируем короткую диагностическую форму без огромного stack trace.
+function formatFetchError(error: unknown): object {
+  if (!(error instanceof Error)) {
+    return { message: String(error) }
+  }
+
+  const cause = getFetchCause(error)
+  return {
+    message: error.message,
+    cause: cause?.message,
+    code: cause?.code,
+    address: cause?.address,
+    port: cause?.port,
+  }
+}
+
+// Последний рубеж защиты для fire-and-forget fetch-запросов.
+// Если backend недоступен, Node.js 22 может превратить незахваченный
+// fetch failed / ECONNREFUSED в падение всего процесса mqtt-worker.
+process.on('unhandledRejection', (error) => {
+  if (isFetchConnectionRefused(error)) {
+    console.error('process.unhandled_fetch_refused', formatFetchError(error))
+    return
+  }
+
+  console.error('process.unhandled_rejection', error)
+})