how to specify default cloud run revision url in the cloud build yaml file - google-cloud-platform

Question

I have a GCP project where I continuously deploy changes (PRs) made to a GitHub repository to a cloud-run service using cloud build triggers
the way i set it up at first is that i use GCP GUI
this results in a trigger in cloud-build\
the cloud-build trigger has the yaml file that looks like this
- name: gcr.io/cloud-builders/docker
args:
- build
- '--no-cache'
- '-t'
- '$_GCR_HOSTNAME/$PROJECT_ID/$REPO_NAME/$_SERVICE_NAME:$COMMIT_SHA'
- .
- '-f'
- Dockerfile
id: Build
- name: gcr.io/cloud-builders/docker
args:
- push
- '$_GCR_HOSTNAME/$PROJECT_ID/$REPO_NAME/$_SERVICE_NAME:$COMMIT_SHA'
id: Push
- name: 'gcr.io/google.com/cloudsdktool/cloud-sdk:slim'
args:
- run
- services
- update
- $_SERVICE_NAME
- '--platform=managed'
- '--image=$_GCR_HOSTNAME/$PROJECT_ID/$REPO_NAME/$_SERVICE_NAME:$COMMIT_SHA'
- >-
--labels=managed-by=gcp-cloud-build-deploy-cloud-run,commit-sha=$COMMIT_SHA,gcb-build-id=$BUILD_ID,gcb-trigger-id=$_TRIGGER_ID,$_LABELS
- '--region=$_DEPLOY_REGION'
- '--quiet'
id: Deploy
entrypoint: gcloud
images:
- '$_GCR_HOSTNAME/$PROJECT_ID/$REPO_NAME/$_SERVICE_NAME:$COMMIT_SHA'
options:
substitutionOption: ALLOW_LOOSE
substitutions:
_PLATFORM: managed
_SERVICE_NAME: bordereau
_DEPLOY_REGION: europe-west1
_LABELS: gcb-trigger-id=((a long random id goes here))
_TRIGGER_ID: ((an other long random id goes here))
_GCR_HOSTNAME: eu.gcr.io
tags:
- gcp-cloud-build-deploy-cloud-run
- gcp-cloud-build-deploy-cloud-run-managed
- bordereau
when ever this trigger is run, a new cloud-run revision is created like this
then i can create a url that points to a specific url like this
that helps me access each revision using its unique URL
i tried many ways to eddit the cloud-build YAML file to give each revision a unique URL automaticly ( not manually through the GCP GUI ) but i dont seem to find a way! i tried many keywords, and read the documentation but that didnt help either!
any help is very much appreciated.
it would be great if the revision URL (tag) was something unique and short like first charecters of the commit SHA or the PR number

Answer 1

Usually you can do like that (see step id: tag)
- name: gcr.io/cloud-builders/docker
args:
- build
- '--no-cache'
- '-t'
- '$_GCR_HOSTNAME/$PROJECT_ID/$REPO_NAME/$_SERVICE_NAME:$COMMIT_SHA'
- .
- '-f'
- Dockerfile
id: Build
- name: gcr.io/cloud-builders/docker
args:
- push
- '$_GCR_HOSTNAME/$PROJECT_ID/$REPO_NAME/$_SERVICE_NAME:$COMMIT_SHA'
id: Push
- name: 'gcr.io/google.com/cloudsdktool/cloud-sdk:slim'
args:
- run
- services
- update
- $_SERVICE_NAME
- '--platform=managed'
- '--image=$_GCR_HOSTNAME/$PROJECT_ID/$REPO_NAME/$_SERVICE_NAME:$COMMIT_SHA'
- >-
--labels=managed-by=gcp-cloud-build-deploy-cloud-run,commit-sha=$COMMIT_SHA,gcb-build-id=$BUILD_ID,gcb-trigger-id=$_TRIGGER_ID,$_LABELS
- '--region=$_DEPLOY_REGION'
- '--quiet'
id: Deploy
entrypoint: gcloud
- name: 'gcr.io/google.com/cloudsdktool/cloud-sdk:slim'
args:
- -c
- |
export sha=$COMMIT_SHA
export CUSTOM_TAG=${sha:0:8}
export CURRENT_REV=$(gcloud alpha run services describe $_SERVICE_NAME --region=$_DEPLOY_REGION --platform=managed --format='value(status.traffic[0].revisionName)')
gcloud run services update-traffic $_SERVICE_NAME --set-tags=$$CUSTOM_TAG=$$CURRENT_REV --region=$_DEPLOY_REGION --platform=managed
id: tag
entrypoint: bash
images:
- '$_GCR_HOSTNAME/$PROJECT_ID/$REPO_NAME/$_SERVICE_NAME:$COMMIT_SHA'
options:
substitutionOption: ALLOW_LOOSE
substitutions:
_PLATFORM: managed
_SERVICE_NAME: bordereau
_DEPLOY_REGION: europe-west1
_LABELS: gcb-trigger-id=((a long random id goes here))
_TRIGGER_ID: ((an other long random id goes here))
_GCR_HOSTNAME: eu.gcr.io
tags:
- gcp-cloud-build-deploy-cloud-run
- gcp-cloud-build-deploy-cloud-run-managed
- bordereau
In that custom tag, I put the 8 first character of the commit SHA
You can note the weird env var COMMIT_SHA copy to a local env var. It's a strange thing with CloudBuild.