Route Cloud Pub/Sub events to Cloud Run

Console

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

   Go to project selector

2. Enable the Cloud Logging, Eventarc, and Eventarc Publishing APIs.

   Enable the APIs

3. If applicable, enable the API related to the direct events. For example, for Cloud Pub/Sub events, enable the Cloud Pub/Sub API.

4. If you don't already have one, create a user-managed service account, then grant it the roles and permissions necessary so that Eventarc can manage events for your target service.

   1. In the Google Cloud console, go to the Create service account page.

      Go to Create service account

   2. Select your project.

   3. In the Service account name field, enter a name. The Google Cloud console fills in the Service account ID field based on this name.

      In the Service account description field, enter a description. For example, Service account for event trigger.

   4. Click Create and continue.

   5. To provide appropriate access, in the Select a role list, select the required Identity and Access Management (IAM) roles to grant to your service account for authenticated or unauthenticated invocations. For more information, see Roles and permissions for Cloud Run targets.

      For additional roles, click add Add another role and add each additional role.

   6. Click Continue.

   7. To finish creating the account, click Done.

gcloud

1. In the Google Cloud console, activate Cloud Shell.

   Activate Cloud Shell

   At the bottom of the Google Cloud console, a Cloud Shell session starts and displays a command-line prompt. Cloud Shell is a shell environment with the Google Cloud CLI already installed and with values already set for your current project. It can take a few seconds for the session to initialize.

2. Enable the Cloud Logging, Eventarc, and Eventarc Publishing APIs.

   gcloud services enable logging.googleapis.com \
     eventarc.googleapis.com \
     eventarcpublishing.googleapis.com

3. If applicable, enable the API related to the direct events. For example, for Cloud Pub/Sub events, enable pubsub.googleapis.com.

4. If you don't already have one, create a user-managed service account, then grant it the roles and permissions necessary so that Eventarc can manage events for your target service.

   1. Create the service account:

      gcloud iam service-accounts create SERVICE_ACCOUNT_NAME

      Replace SERVICE_ACCOUNT_NAME with the name of the service account. It must be between 6 and 30 characters, and can contain lowercase alphanumeric characters and dashes. After you create a service account, you cannot change its name.

   2. Grant the required Identity and Access Management (IAM) roles or permissions for authenticated or unauthenticated invocations. For more information, see Roles and permissions for Cloud Run targets.

Console

1. In the Google Cloud console, go to the Eventarc Triggers page.

   Go to Triggers

2. Click add_box Create trigger.
3. Type a Trigger name.

   This is the ID of the trigger and it must start with a letter. It can contain up to 63 lowercase letters, numbers, or hyphens.

4. For the Trigger type, select Google sources.
5. In the Event provider list, select Cloud Pub/Sub.

   Note that the event provider name used in the associated Google Cloud documentation might not have a prefix of Cloud or Google Cloud. For example, on the console, Memorystore for Redis is referred to as Google Cloud Memorystore for Redis.

6. In the Event type list, from the Direct events, select google.cloud.pubsub.topic.v1.messagePublished.
7. In the Select a Cloud Pub/Sub topic list, select a topic or accept the default of None so that a new topic is created for you.
8. In the Region list, select the same region as the Google Cloud service that is generating events.

   For more information, see Eventarc locations.

9. Select the Service account that will invoke your service or workflow.

   Or, you can create a new service account.

   This specifies the Identity and Access Management (IAM) service account email associated with the trigger and to which you previously granted specific roles required by Eventarc.

10. In the Event destination list, select Cloud Run.
11. Select a service.
    

    This is the name of the service that receives the events for the trigger. The service must be in the same project as the trigger and will receive events as HTTP POST requests sent to its root URL path (/), whenever the event is generated.

12. Optionally, you can specify the Service URL path to send the incoming request to.

    This is the relative path on the destination service to which the events for the trigger should be sent. For example: /, /route, route, route/subroute.

13. Click Create.

After a trigger is created, the event source filters cannot be modified. Instead, create a new trigger and delete the old one. For more information, see Manage triggers.

gcloud

You can create a trigger by running a gcloud eventarc triggers create command along with required and optional flags.

gcloud eventarc triggers create TRIGGER \
  --location=LOCATION \
  --destination-run-service=DESTINATION_RUN_SERVICE \
  --destination-run-region=DESTINATION_RUN_REGION \
  --event-filters="type=google.cloud.pubsub.topic.v1.messagePublished" \
  --transport-topic=projects/PROJECT_ID/topics/TOPIC_ID \
  --service-account=SERVICE_ACCOUNT_NAME@PROJECT_ID.iam.gserviceaccount.com

gcloud eventarc triggers create helloworld-trigger \
  --location=us-central1 \
  --destination-run-service=helloworld-events \
  --destination-run-region=us-central1 \
  --event-filters="type=google.cloud.pubsub.topic.v1.messagePublished" \
  --transport-topic=projects/${PROJECT_ID}/topics/${TOPIC_NAME}
  --service-account=${SERVICE_ACCOUNT_NAME}@${PROJECT_ID}.iam.gserviceaccount.com

gcloud eventarc triggers create TRIGGER \
  --location=LOCATION \
  --destination-run-service=DESTINATION_RUN_SERVICE \
  --destination-run-region=DESTINATION_RUN_REGION \
  --event-filters="type=google.cloud.pubsub.topic.v1.messagePublished" \
  --service-account=SERVICE_ACCOUNT_NAME@PROJECT_ID.iam.gserviceaccount.com

gcloud eventarc triggers create helloworld-trigger \
  --location=us-central1 \
  --destination-run-service=helloworld-events \
  --destination-run-region=us-central1 \
  --event-filters="type=google.cloud.pubsub.topic.v1.messagePublished" \
  --service-account=${SERVICE_ACCOUNT_NAME}@${PROJECT_ID}.iam.gserviceaccount.com

Terraform

You can create a trigger for a Cloud Run destination using Terraform. For details, see Create a trigger using Terraform.

Console

1. In the Google Cloud console, go to the Eventarc Triggers page.

   Go to Triggers

   This page lists your triggers in all locations, and includes details such as names, regions, event providers, destinations, and more.

2. To filter your triggers:

   1. Click filter_list Filter or the Filter triggers field.
   2. In the Properties list, select an option to filter the triggers by.

   You can select a single property or use the logical operator OR to add more properties.

3. To sort your triggers, beside any supported column heading, click arrow_upward Sort.

gcloud

Run the following command to list your triggers:

gcloud eventarc triggers list --location=-

This command lists your triggers in all locations, and includes details such as names, types, destinations, and statuses.