Mengaktifkan notifikasi peristiwa model dengan Cloud Functions dan Pub/Sub
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Simpan dan kategorikan konten berdasarkan preferensi Anda.
Di Vertex AI Vision, model menerima data media dari perangkat seperti
kamera, menjalankan prediksi AI pada data, dan menghasilkan anotasi secara berkelanjutan.
Anda sering kali mengirim data yang diproses tersebut ke tujuan data ("penampung data")
seperti media warehouse atau BigQuery untuk tugas analitik
lebih lanjut. Namun, Anda mungkin memiliki kasus saat beberapa anotasi harus ditangani
secara berbeda, atau kebutuhan anotasi bersifat mendesak. Integrasi dengan fungsi Cloud Run dan Pub/Sub membantu Anda memenuhi kebutuhan ini.
Agar dapat mengaktifkan notifikasi peristiwa model, Anda perlu melakukan langkah-langkah berikut:
Pantau data model dan buat peristiwa dari data tersebut menggunakan fungsi Cloud Run.
Kirim peristiwa yang dihasilkan fungsi Cloud Run melalui saluran peristiwa Pub/Sub.
Model yang didukung
Model berikut menawarkan pembuatan peristiwa fungsi Cloud Run dan integrasi notifikasi peristiwa Pub/Sub:
Opsional. Instal Vertex AI Vision SDK dan
serap data ke dalam aplikasi Anda. Jika Anda
tidak melakukannya sebelum menyiapkan notifikasi peristiwa, Anda harus melakukannya setelahnya.
Opsional. Buat fungsi Cloud Run yang akan digunakan.
Jika tidak membuat fungsi Cloud Run sebelum mengonfigurasi fungsi Cloud Run untuk memproses output model, Anda harus membuatnya selama proses tersebut.
Opsional. Buat topik Pub/Sub yang akan digunakan.
Jika tidak membuat topik Pub/Sub sebelum mengaktifkan notifikasi peristiwa model dengan Pub/Sub, Anda harus membuatnya selama proses tersebut.
Opsional. Pilih dan buat langganan Pub/Sub.
Jika tidak membuat langganan Pub/Sub sebelum mengaktifkan notifikasi peristiwa model dengan Pub/Sub, Anda harus membuatnya setelah membaca pesan dari topik.
Mengonfigurasi fungsi Cloud Run untuk memproses output model
Untuk memicu notifikasi berbasis peristiwa, Anda harus menyiapkan fungsi Cloud Run terlebih dahulu untuk memproses output model dan membuat peristiwa.
Fungsi Cloud Run Anda terhubung ke model dan memproses outputnya
sebagai tindakan pascapemrosesan. Fungsi Cloud Run yang harus Anda tampilkan adalah AppPlatformCloudFunctionResponse. Peristiwa (appplatformeventbody) dikirim ke topik Pub/Sub yang Anda konfigurasikan di langkah berikutnya.
Contoh fungsi Cloud Run (model analisis jumlah tamu)
Contoh fungsi Cloud Run
/***RespondstoanyHTTPrequest.**@param{!express:Request}reqHTTPrequestcontext.*@param{!express:Response}resHTTPresponsecontext.*/exports.hello_http=(req,res)=>{//Loggingstatementcanbereadwithcmd`gcloudfunctionslogsread{$functionName}`.//Formoreaboutlogging,pleaseseehttps://cloud.google.com/functions/docs/monitoring//Theprocessoroutputwillbestoredinreq.body.constmessageString=constructMessage(req.body);//SendyourmessagetooperatoroutputwithresHTTPresponsecontext.res.status(200).send(messageString);};functionconstructMessage(data){//Typically,yourprocessoroutputshouldcontainsappPlatformMetadata & it's designed output.//Herewewillusetheoccupancyanalyticsmodelasanexample.constappPlatformMetadata=data.appPlatformMetadata;constannotations=data.annotations;constevents=[];for(constannotationofannotations){events.push({"event_message":"Event message goes here","payload":{"attr_key_goes_here":"val_goes_here"},"event_id":"event_id_goes_here"});}//Typically,yourcloudfunctionshouldreturnastringrepresentaJSONwhichhastwofields://"annotations"mustfollowthespecificationofthetargetmodel.//"events"shouldbeoftype"AppPlatformEventBody".constmessageJson={"annotations":annotations,"events":events,};returnJSON.stringify(messageJson);}
Gunakan petunjuk berikut untuk mengirim streaming output model ke fungsi Cloud Run Anda:
Di daftar pascapemrosesan pada bagian Notifikasi peristiwa, pilih fungsi Cloud Run yang ada, atau buat yang baru.
Mengaktifkan notifikasi peristiwa model dengan Pub/Sub
Setelah menyiapkan fungsi Cloud Run untuk memproses output model dan menghasilkan peristiwa, Anda dapat menyiapkan notifikasi peristiwa dengan Pub/Sub. Untuk membaca pesan
dari topik, Anda juga perlu
Memilih dan membuat langganan Pub/Sub.
[[["Mudah dipahami","easyToUnderstand","thumb-up"],["Memecahkan masalah saya","solvedMyProblem","thumb-up"],["Lainnya","otherUp","thumb-up"]],[["Sulit dipahami","hardToUnderstand","thumb-down"],["Informasi atau kode contoh salah","incorrectInformationOrSampleCode","thumb-down"],["Informasi/contoh yang saya butuhkan tidak ada","missingTheInformationSamplesINeed","thumb-down"],["Masalah terjemahan","translationIssue","thumb-down"],["Lainnya","otherDown","thumb-down"]],["Terakhir diperbarui pada 2025-09-04 UTC."],[],[],null,["# Enable model event notification with Cloud Functions and Pub/Sub\n\nIn Vertex AI Vision, models receive media data from devices like cameras, run AI predictions on the data, and produce annotations continuously. Frequently you send that processed data to a data destination (\"data sink\") such as a media warehouse or BigQuery for further analytic jobs. However, you may have a case where some annotations must be handled differently, or the annotation needs are time-sensitive. Integrations with Cloud Run functions and Pub/Sub help you address these needs.\n\n\u003cbr /\u003e\n\nTo be able to enable model event notifications, you need to do the following:\n\n\u003cbr /\u003e\n\n1. Listen to the model data and generate events from it using Cloud Run functions.\n2. Send the Cloud Run functions generated events through the Pub/Sub event channel.\n\n#### Supported models\n\nThe following models offer Cloud Run functions event generation and\nPub/Sub event notification integrations:\n\n- [Occupancy analytics](/vision-ai/docs/occupancy-analytics-model) model\n- Vertex AI [custom-trained models](#add-vertex-custom-model)\n\nBefore you begin\n----------------\n\n- Create an app with, at minimum, a stream node and a [supported model](#event-supported-models) node.\n- Optional. [Install the Vertex AI Vision SDK](/vision-ai/docs/cloud-environment#get-source-code) and [ingest data](/vision-ai/docs/create-manage-streams#ingest-videos) into your app. If you don't do this before you set up event notification you must do it after.\n- Optional. [Create a Cloud Run function](/functions/docs/create-deploy-gcloud-1st-gen) to use. If you don't create your Cloud Run function before you configure Cloud Run functions to process model output, you must create it during that process.\n- Optional. [Create a Pub/Sub topic](/pubsub/docs/create-topic) to use. If you don't create your Pub/Sub topic before you enable model event notification with Pub/Sub, you must create it during that process.\n- Optional. [Choose and create a Pub/Sub subscription](/pubsub/docs/create-subscription). If you don't create your Pub/Sub subscription before you enable model event notification with Pub/Sub, you must create it after to read messages from a topic.\n\n### Configure Cloud Run functions to process model output\n\nTo trigger event-based notifications, you must first set up Cloud Run functions\nto process model output and generate events.\n\nYour Cloud Run function connects to the model and listens to its output\nas its post-processing action. The Cloud Run function you should return\nan [`AppPlatformCloudFunctionResponse`](/vision-ai/docs/reference/rpc/google.cloud.visionai.v1#appplatformcloudfunctionresponse). The events\n([`appplatformeventbody`](/vision-ai/docs/reference/rpc/google.cloud.visionai.v1#appplatformeventbody)) are\nsent to the Pub/Sub topic you configure in the next step.\n\n\u003cbr /\u003e\n\n#### Sample Cloud Run function (occupancy analytics model)\n\n### Sample Cloud Run function\n\n /**\n * Responds to any HTTP request.\n *\n * @param {!express:Request} req HTTP request context.\n * @param {!express:Response} res HTTP response context.\n */\n exports.hello_http = (req, res) =\u003e {\n // Logging statement can be read with cmd `gcloud functions logs read {$functionName}`.\n // For more about logging, please see https://cloud.google.com/functions/docs/monitoring\n\n // The processor output will be stored in req.body.\n const messageString = constructMessage(req.body);\n\n // Send your message to operator output with res HTTP response context.\n res.status(200).send(messageString);\n };\n\n function constructMessage(data) {\n // Typically, your processor output should contains appPlatformMetadata & it's designed output.\n // Here we will use the occupancy analytics model as an example.\n const appPlatformMetadata = data.appPlatformMetadata;\n const annotations = data.annotations;\n const events = [];\n for(const annotation of annotations) {\n events.push({\n \"event_message\": \"Event message goes here\",\n \"payload\" : {\n \"attr_key_goes_here\" : \"val_goes_here\"\n },\n \"event_id\" : \"event_id_goes_here\"\n });\n }\n\n // Typically, your cloud function should return a string represent a JSON which has two fields:\n // \"annotations\" must follow the specification of the target model.\n // \"events\" should be of type \"AppPlatformEventBody\".\n const messageJson = {\n \"annotations\": annotations,\n \"events\": events,\n };\n return JSON.stringify(messageJson);\n }\n\nUse the following instructions to\nto send the model output stream to your Cloud Run function: \n\n### Console\n\n1. Open the **Applications** tab of the Vertex AI Vision dashboard.\n\n [Go to the Applications tab](https://console.cloud.google.com/ai/vision-ai/applications)\n2. Select schema**View app** next to the\n name of your application from the list.\n\n3. Click on the [supported model](#event-supported-model) to open the model\n details side panel.\n\n4. In the **post-processing** list of the **Event notification** section,\n select your existing Cloud Run function, or create a new one.\n\n### Enable model event notification with Pub/Sub\n\nAfter you have set up Cloud Run functions to process model output and generate\nevents, you can set up event notification with Pub/Sub. To read messages\nfrom a topic, you also need to\n[Choose and create a Pub/Sub subscription](/pubsub/docs/create-subscription). \n\n### Console\n\n1. Open the **Applications** tab of the Vertex AI Vision dashboard.\n\n [Go to the Applications tab](https://console.cloud.google.com/ai/vision-ai/applications)\n2. Select schema**View app** next to the\n name of your application from the list.\n\n3. Click on the [supported model](#event-supported-model) to open the model\n details side panel.\n\n4. In the **Event notification** section, select\n **Set up event notification**.\n\n5. In the **Set up Pub/Sub for event notifications** option window that\n opens, choose your existing Pub/Sub topic, or create a new one.\n\n6. In the **Frequency** field, set an integer value for the frequency value\n in seconds a notification for the same type of event can be sent.\n\n7. Click **Set up**.\n\nWhat's next\n-----------\n\n- Read instructions about how to deploy your app to test model event notification in [Deploy and undeploy an application](/vision-ai/docs/deploy-app).\n- Work through the [Vertex AI Vision Occupancy Analytics app with event management](https://codelabs.developers.google.com/vertex-ai-event-management#0) codelab.\n- Learn more about Pub/Sub and Cloud Run functions in [What is Pub/Sub?](/pubsub/docs/overview) and the [Cloud Run functions overview](/functions/docs/concepts/overview)."]]