mqtt-ingest draft

app/src/handlers/edge5-video.ts

@@ -0,0 +1,13 @@
+import { onEdgeChunk } from '../stream/edge-chunk-relay.js'
+import type { TopicHandler } from '../types.js'
+
+export const TOPIC = 'data/edge5/video/v1'
+
+export const handleEdge5Video: TopicHandler = async (topic, payload) => {
+  console.log('edge5.video.received', {
+    topic,
+    bytes: payload.length,
+    payload,
+  })
+  onEdgeChunk(payload)
+}

app/src/handlers/index.ts

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+import { register } from '../registry.js'
+import { handleTopic1, TOPIC as topic1 } from './topic1.js'
+import { handleTopic2, TOPIC as topic2 } from './topic2.js'
+import { handleTopic3, TOPIC as topic3 } from './topic3.js'
+import { handleTopic4, TOPIC as topic4 } from './topic4.js'
+import { handleTopic5, TOPIC as topic5 } from './topic5.js'
+import { handleEdge5Video, TOPIC as edge5Video } from './edge5-video.js'
+
+register(topic1, handleTopic1)
+register(topic2, handleTopic2)
+register(topic3, handleTopic3)
+register(topic4, handleTopic4)
+register(topic5, handleTopic5)
+register(edge5Video, handleEdge5Video)

app/src/handlers/topic1.ts

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+import { parseJson } from '../helpers/parse.js'
+import { isArrayOfChunks125 } from '../helpers/validate.js'
+import type { TopicHandler } from '../types.js'
+
+export const TOPIC = 'poc/topic1'
+
+export const handleTopic1: TopicHandler = async (topic, payload) => {
+  const raw = parseJson(payload)
+
+  if (!isArrayOfChunks125(raw)) {
+    console.warn('topic1.invalid_payload', { topic })
+    return
+  }
+
+  console.log('topic1.received', { topic, chunks: raw.length })
+}

app/src/handlers/topic2.ts

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+import { parseJson } from '../helpers/parse.js'
+import { isArrayOfLength125 } from '../helpers/validate.js'
+import type { TopicHandler } from '../types.js'
+
+export const TOPIC = 'poc/topic2'
+
+export const handleTopic2: TopicHandler = async (topic, payload) => {
+  const raw = parseJson(payload)
+
+  if (!isArrayOfLength125(raw)) {
+    console.warn('topic2.invalid_payload', { topic })
+    return
+  }
+
+  console.log('topic2.received', { topic, length: raw.length })
+}

app/src/handlers/topic3.ts

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+import { parseUtf8 } from '../helpers/parse.js'
+import { isNonEmptyString } from '../helpers/validate.js'
+import type { TopicHandler } from '../types.js'
+
+export const TOPIC = 'poc/topic3'
+
+export const handleTopic3: TopicHandler = async (topic, payload) => {
+  const text = parseUtf8(payload)
+
+  if (!isNonEmptyString(text)) {
+    console.warn('topic3.invalid_payload', { topic })
+    return
+  }
+
+  console.log('topic3.received', { topic, text })
+}

app/src/handlers/topic4.ts

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+import { parseJson } from '../helpers/parse.js'
+import { isFiniteNumber } from '../helpers/validate.js'
+import type { TopicHandler } from '../types.js'
+
+export const TOPIC = 'poc/topic4'
+
+type Topic4Payload = {
+  value: number
+}
+
+function isTopic4Payload(value: unknown): value is Topic4Payload {
+  return (
+    typeof value === 'object' &&
+    value !== null &&
+    'value' in value &&
+    isFiniteNumber((value as Topic4Payload).value)
+  )
+}
+
+export const handleTopic4: TopicHandler = async (topic, payload) => {
+  const raw = parseJson(payload)
+
+  if (!isTopic4Payload(raw)) {
+    console.warn('topic4.invalid_payload', { topic })
+    return
+  }
+
+  console.log('topic4.received', { topic, value: raw.value })
+}

app/src/handlers/topic5.ts

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+import { parseJsonArray } from '../helpers/parse.js'
+import type { TopicHandler } from '../types.js'
+
+export const TOPIC = 'poc/topic5'
+
+export const handleTopic5: TopicHandler = async (topic, payload) => {
+  const items = parseJsonArray(payload)
+
+  console.log('topic5.received', { topic, count: items.length })
+}