Add support for Retry Policy property when creating PubSub Subscription

[koalaty-code]

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Description

Specifying a Retry Policy for a PubSub subscription is now supported through the Console, gcloud cli, and API. We would like to take advantage of this new property to eliminate current work-arounds in code, but are currently limited by what the terraform provider supports.

New or Affected Resource(s)

• google_pubsub_subscription

Potential Terraform Configuration

resource "google_pubsub_subscription" "my_awesome_subscription" {
  name  = "example-subscription"
  topic = google_pubsub_topic.example.name

  ...
  // Use existing dead_letter_policy.max_delivery_attempts to limit retry attempts
  retry_policy {
    // If the maximum backoff duration is set, the default minimum backoff duration is 10 seconds.
    // If the minimum backoff duration is set, the default maximum backoff duration is 600 seconds.
    min_backoff = 10s // Defaults to 10s when unset, maximum 600s
    max_backoff = 600s // Defaults to 600s when unset, maximum 600s
  }
}

References

• None

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