Quickstart: Events for Cloud Run for Anthos

Quickstart: Events for Cloud Run for Anthos

Beta

This product is covered by the Pre-GA Offerings Terms of the Google Cloud Terms of Service. Pre-GA products might have limited support, and changes to pre-GA products might not be compatible with other pre-GA versions. For more information, see the launch stage descriptions.

This page shows you how to set up Events for Cloud Run for Anthos and receive events from Cloud Storage.

In this quickstart, you:

1. Create a GKE cluster and enable Cloud Run for Anthos.
2. Initialize Events for Cloud Run for Anthos.
3. Create an events broker to route events from the source to receiver.
4. Deploy a Cloud Run for Anthos service that receives events.
5. Set up Cloud Storage to generate events.
6. Generate and view an event.

Before you begin

1. Sign in to your Google Cloud account. If you're new to Google Cloud, create an account to evaluate how our products perform in real-world scenarios. New customers also get $300 in free credits to run, test, and deploy workloads.

2. In the Google Cloud console, on the project selector page, select or create a Google Cloud project.

   Note: If you don't plan to keep the resources that you create in this procedure, create a project instead of selecting an existing project. After you finish these steps, you can delete the project, removing all resources associated with the project.

   Go to project selector

3. Make sure that billing is enabled for your Cloud project. Learn how to check if billing is enabled on a project.

4. Install the Google Cloud CLI.

5. To initialize the gcloud CLI, run the following command:

   gcloud init

6. In the Google Cloud console, on the project selector page, select or create a Google Cloud project.

   Note: If you don't plan to keep the resources that you create in this procedure, create a project instead of selecting an existing project. After you finish these steps, you can delete the project, removing all resources associated with the project.

   Go to project selector

7. Make sure that billing is enabled for your Cloud project. Learn how to check if billing is enabled on a project.

8. Install the Google Cloud CLI.

9. To initialize the gcloud CLI, run the following command:

   gcloud init

10. Make sure you are using the latest version of the Google Cloud CLI.
11. Set gcloud CLI to use your Google Cloud project:

    gcloud config set project PROJECT-ID
    

12. Install the gcloud CLI beta components:

    gcloud components install beta
    

13. Enable services used in this quickstart:

    gcloud services enable cloudapis.googleapis.com
    gcloud services enable container.googleapis.com
    gcloud services enable containerregistry.googleapis.com
    gcloud services enable cloudbuild.googleapis.com
    

14. Set Google Cloud CLI configuration variables:

    gcloud config set run/cluster events-cluster
    gcloud config set run/cluster_location us-central1
    gcloud config set run/platform gke
    

15. Optional: You can check the configuration settings using the Google Cloud CLI by typing:

    gcloud config list
    

    The output is similar to the following:

    [run]
    cluster = events-cluster
    cluster_location = us-central1
    platform = gke
    

Creating a GKE cluster with Cloud Run for Anthos enabled

1. Create a Google Kubernetes Engine cluster for Cloud Run for Anthos with the CloudRun, HttpLoadBalancing and HorizontalPodAutoscaling addons enabled:

   gcloud beta container clusters create events-cluster \
     --addons=HttpLoadBalancing,HorizontalPodAutoscaling,CloudRun \
     --machine-type=n1-standard-4 \
     --enable-autoscaling --min-nodes=3 --max-nodes=10 \
     --no-issue-client-certificate --num-nodes=3  \
     --enable-stackdriver-kubernetes \
     --scopes=cloud-platform,logging-write,monitoring-write,pubsub \
     --zone us-central1 \
     --release-channel=rapid
   

2. Wait a couple of minutes for the cluster creation to complete. During the creation process, you might see warnings that you can safely ignore. When cluster creation has been completed, the output is similar to the following:

   Creating cluster events-cluster...done.
   Created [https://container.googleapis.com/v1beta1/ \
   projects/my-project/zones/us-central1/clusters/events-cluster].
   

   where my-project is your project ID. You have just created a new Google Kubernetes Engine cluster named events-cluster in the project my-project.

Initializing Events for Cloud Run for Anthos

To initialize Events for Cloud Run for Anthos.

1. Initialize Events for Cloud Run for Anthos for Cloud Run for Anthos using the Google Cloud CLI:

   gcloud beta events init --platform gke
   

   1. When prompted, select events-cluster as the GKE cluster.

   2. Enter Y to all the prompts asking to create service accounts, bind them to specific roles, generating new keys, and enable necessary services.

   This creates pods in two Kubernetes namespaces called cloud-run-events and knative-eventing.

2. Optional: Check successful pod creation:

   kubectl get pods -n cloud-run-events
   

   The output is similar to the following:

     NAME                         READY   STATUS    RESTARTS   AGE
     controller-9cc679b67-2952n   1/1     Running   0          22s
     webhook-8576c4cfcb-dhz82     1/1     Running   0          16m
   

   To check pods knative-eventing namespace, type:

   kubectl get pods -n knative-eventing
   

   The output is similar to the following:

     NAME                                   READY   STATUS    RESTARTS   AGE
     eventing-controller-77f46f6cf8-kj9ck   1/1     Running   0          17m
     eventing-webhook-5bc787965f-hcmwg      1/1     Running   0          17m
   

Creating an event broker

In Events for Cloud Run for Anthos, brokers route events from the source to a destination service. In this quickstart you will create a broker that routes events from Cloud Storage to a Cloud Run for Anthos service.

To create a broker:

1. Create an events namespace:

   kubectl create namespace events
   

2. Initialize the namespace with the default secret:

   gcloud beta events namespaces init events \
     --copy-default-secret
   

3. Create the event broker:

   gcloud beta events brokers create default \
     --namespace events
   

4. Optional: After a few minutes, you can check the status of your broker by running:

   kubectl get brokers \
     -n events
   

Deploying a Cloud Run for Anthos service to receive events

Deploy a Cloud Run for Anthos service that receives events from the broker and logs it.

To deploy the Cloud Run for Anthos service:

1. Clone the repository:

   Python

   git clone https://github.com/GoogleCloudPlatform/python-docs-samples.git
   cd python-docs-samples/eventarc/audit-storage
   

   Java

   git clone https://github.com/GoogleCloudPlatform/java-docs-samples.git
   cd java-docs-samples/eventarc/audit-storage
   

   Go

   git clone https://github.com/GoogleCloudPlatform/golang-samples.git
   cd golang-samples/eventarc/audit_storage
   

   Node.js

   git clone https://github.com/GoogleCloudPlatform/nodejs-docs-samples.git
   cd nodejs-docs-samples/eventarc/audit-storage
   

   C#

   git clone https://github.com/GoogleCloudPlatform/dotnet-docs-samples.git
   cd dotnet-docs-samples/eventarc/audit-storage
   

2. Build the container and upload it to Cloud Build:

   gcloud builds submit \
    --tag gcr.io/$(gcloud config get-value project)/events-quickstart-container
   

3. Deploy the container image to Cloud Run for Anthos:

   gcloud run deploy events-quickstart-receiver \
      --namespace=events \
      --image gcr.io/$(gcloud config get-value project)/events-quickstart-container
   

   When you see the service URL, it has successfully deployed.

Setting up Cloud Storage

Cloud Storage generates events when there are changes to the storage bucket and send them to the event broker. To set up Cloud Storage:

1. Create a Cloud Storage bucket using the gsutil command-line tool:

   gsutil mb \
       -p $(gcloud config get-value project) \
       -l us-central1 \
       gs://"events-quickstart-$(gcloud config get-value project)"
   

   In this example, the Cloud Storage bucket is created in the us-central1 region.

2. Retrieve the Cloud Storage service account:

   curl -X GET -H "Authorization: Bearer $(gcloud auth print-access-token)" \
     "https://storage.googleapis.com/storage/v1/projects/$(gcloud config get-value project)/serviceAccount"
   

3. Give the Cloud Storage service account publish rights to Pub/Sub:

   gcloud projects add-iam-policy-binding $(gcloud config get-value project) \
       --member=serviceAccount:CLOUD-STORAGE-SERVICE-ACCOUNT \
       --role roles/pubsub.publisher
   

Creating a Cloud Storage trigger

When you create a trigger, you must specify the Cloud Run for Anthos service that receives events from Cloud Storage.

1. Create the Cloud Storage trigger:

   gcloud beta events triggers create trigger-storage \
     --namespace events \
     --target-service events-quickstart-receiver \
     --type=google.cloud.storage.object.v1.finalized \
     --parameters bucket=events-quickstart-$(gcloud config get-value project)
   

   This creates a trigger for your events-quickstart-bucket Cloud Storage bucket.

2. Optional: You can check the status of the trigger by running:

   gcloud beta events triggers list \
     --namespace=events
   

3. Note that while trigger creation is complete and ready, it can take up to two minutes for it to propagate and filter Cloud Storage events.

Generating and viewing an event

1. To generate an event, create a text file with the filename random.txt containing the text "Hello World", and upload it to Cloud Storage using the gsutil command-line tool.

   echo "Hello World" > random.txt
   gsutil cp random.txt gs://events-quickstart-$(gcloud config get-value project)/random.txt
   

   Your upload generates an event and the Cloud Run for Anthos service logs the event's message.

2. To view the message in Cloud Logging:

   Go to the Logs Explorer page

Congratulations! You have successfully deployed Events for Cloud Run for Anthos, triggered an event and logged its contents.

Clean up

To stop billing for all resources used within your test Cloud project, delete the project:

Caution: Deleting a project has the following effects:
• Everything in the project is deleted. If you used an existing project for this tutorial, when you delete it, you also delete any other work you've done in the project.
• Custom project IDs are lost. When you created this project, you might have created a custom project ID that you want to use in the future. To preserve the URLs that use the project ID, such as an appspot.com URL, delete selected resources inside the project instead of deleting the whole project.
1. In the Google Cloud console, go to the Manage resources page.

   Go to Manage resources

2. In the project list, select the project that you want to delete, and then click Delete.
3. In the dialog, type the project ID, and then click Shut down to delete the project.

What's next

• Receiving events with Pub/Sub
• Receiving events with Cloud Audit Logs