Google Cloud Function triggered by Pub/Sub message being sent on certain topic.
This function is simple example of cloud function with Pub/Sub trigger type which send message to Slack channel via webhook.
We will use test slack channel test-webshop-cf to test how this function works.
Runtime: PHP
Guidebook to run this function
- Clone this repo
git clone git@github.com:lemon57/cloud-function-pubsub-msg-slack-php.git
- Define Slack webhook url in
config.php. You can find this webhook -> Slack channel webhook. - Deploy this function to GC. Wait a few min
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gcloud functions deploy <CF_NAME> \
--trigger-resource <PUB_SUB_TOPIC_NAME> \
--trigger-event google.pubsub.topic.publish \
--region=<REGION_NAME> \
--runtime=<CF_RUNTIME>
Replace PUB_SUB_TOPIC_NAME by your own topic name. Define your own.
Replace REGION_NAME by region of current project.
Replace CF_RUNTIME by actual runtime, in our case is php74.
- Check that the function deployed successfully, by command or through GCC UI.
gcloud functions describe <CF_NAME> --region=<REGION_NAME>
- Invoke function directly by command:
gcloud functions call <CF_NAME> --data '{"data":"R29vZ2xlIGNsb3VkIGZ1bmN0aW9uIHdvcmtzaG9w"}'
This string R29vZ2xlIGNsb3VkIGZ1bmN0aW9uIHdvcmtzaG9w base64 encoded. You can create your specific message. Make it base64 encoded, use this resource base64encode
or by sending message to certain topic by command:
gcloud pubsub topics publish projects/<PROJECT_NAME>/topics/<PUB_SUB_TOPIC_NAME> --message Hello
Replace PROJECT_NAME by our current boozt project name.
Replace PUB_SUB_TOPIC_NAME by topic name which you just recently created. If forgot, you can always find needed topic name by:
gcloud pubsub topics list | grep <KEY_WORD_OF_YOUR_TOPIC_NAME>
- Check the logs:
gcloud functions logs read --execution-id=<EXECUTION-ID> --region=<REGION_NAME>
Take EXECUTION_ID from the output after executing these commands: gcloud functions call or gcloud pubsub topics publish.
- Check slack channel
test-webshop-cf
Enjoy