feat(infra): add aws lambda pulumi deployment target

apps/bot/src/lambda.ts

@@ -0,0 +1,90 @@
+import { getLogger } from '@household/observability'
+
+import { createBotRuntimeApp } from './app'
+import {
+  handleLambdaFunctionUrlEvent,
+  type LambdaFunctionUrlRequest,
+  type LambdaFunctionUrlResponse
+} from './lambda-adapter'
+
+const appPromise = createBotRuntimeApp()
+const logger = getLogger('lambda')
+
+export async function handler(event: LambdaFunctionUrlRequest): Promise<LambdaFunctionUrlResponse> {
+  const app = await appPromise
+  return handleLambdaFunctionUrlEvent(event, app.fetch)
+}
+
+async function postRuntimeResponse(
+  requestId: string,
+  response: LambdaFunctionUrlResponse
+): Promise<void> {
+  const runtimeApi = process.env.AWS_LAMBDA_RUNTIME_API
+  if (!runtimeApi) {
+    throw new Error('AWS_LAMBDA_RUNTIME_API environment variable is required')
+  }
+
+  await fetch(`http://${runtimeApi}/2018-06-01/runtime/invocation/${requestId}/response`, {
+    method: 'POST',
+    headers: {
+      'content-type': 'application/json'
+    },
+    body: JSON.stringify(response)
+  })
+}
+
+async function postRuntimeError(requestId: string, error: unknown): Promise<void> {
+  const runtimeApi = process.env.AWS_LAMBDA_RUNTIME_API
+  if (!runtimeApi) {
+    throw new Error('AWS_LAMBDA_RUNTIME_API environment variable is required')
+  }
+
+  const message = error instanceof Error ? error.message : 'Unknown Lambda runtime error'
+
+  await fetch(`http://${runtimeApi}/2018-06-01/runtime/invocation/${requestId}/error`, {
+    method: 'POST',
+    headers: {
+      'content-type': 'application/json'
+    },
+    body: JSON.stringify({
+      errorMessage: message,
+      errorType: error instanceof Error ? error.name : 'Error'
+    })
+  })
+}
+
+async function runtimeLoop(): Promise<void> {
+  const runtimeApi = process.env.AWS_LAMBDA_RUNTIME_API
+  if (!runtimeApi) {
+    throw new Error('AWS_LAMBDA_RUNTIME_API environment variable is required')
+  }
+
+  logger.info(
+    {
+      event: 'runtime.started',
+      mode: 'lambda'
+    },
+    'Bot Lambda runtime started'
+  )
+
+  while (true) {
+    const invocation = await fetch(`http://${runtimeApi}/2018-06-01/runtime/invocation/next`)
+    const requestId = invocation.headers.get('lambda-runtime-aws-request-id')
+
+    if (!requestId) {
+      throw new Error('Lambda runtime response did not include a request id')
+    }
+
+    try {
+      const event = (await invocation.json()) as LambdaFunctionUrlRequest
+      const response = await handler(event)
+      await postRuntimeResponse(requestId, response)
+    } catch (error) {
+      await postRuntimeError(requestId, error)
+    }
+  }
+}
+
+if (import.meta.main) {
+  void runtimeLoop()
+}