Desplegar Cloud Functions (2.ª gen.) con un activador de Cloud Storage mediante Terraform

Configuración completa de Terraform para desplegar una función de Cloud 2.ª gen. basada en eventos con recursos

Código de ejemplo

Terraform

Para saber cómo aplicar o quitar una configuración de Terraform, consulta Comandos básicos de Terraform. Para obtener más información, consulta la documentación de referencia del proveedor Terraform.

terraform {
  required_providers {
    google = {
      source  = "hashicorp/google"
      version = ">= 4.34.0"
    }
  }
}

resource "random_id" "bucket_prefix" {
  byte_length = 8
}

resource "google_storage_bucket" "source_bucket" {
  name                        = "${random_id.bucket_prefix.hex}-gcf-source-bucket"
  location                    = "US"
  uniform_bucket_level_access = true
}

data "archive_file" "default" {
  type        = "zip"
  output_path = "/tmp/function-source.zip"
  source_dir  = "function-source/"
}

resource "google_storage_bucket_object" "default" {
  name   = "function-source.zip"
  bucket = google_storage_bucket.source_bucket.name
  source = data.archive_file.default.output_path # Path to the zipped function source code
}

resource "google_storage_bucket" "trigger_bucket" {
  name                        = "${random_id.bucket_prefix.hex}-gcf-trigger-bucket"
  location                    = "us-central1" # The trigger must be in the same location as the bucket
  uniform_bucket_level_access = true
}

data "google_storage_project_service_account" "default" {
}

# To use GCS CloudEvent triggers, the GCS service account requires the Pub/Sub Publisher(roles/pubsub.publisher) IAM role in the specified project.
# (See https://cloud.google.com/eventarc/docs/run/quickstart-storage#before-you-begin)
data "google_project" "project" {
}

resource "google_project_iam_member" "gcs_pubsub_publishing" {
  project = data.google_project.project.project_id
  role    = "roles/pubsub.publisher"
  member  = "serviceAccount:${data.google_storage_project_service_account.default.email_address}"
}

resource "google_service_account" "account" {
  account_id   = "gcf-sa"
  display_name = "Test Service Account - used for both the cloud function and eventarc trigger in the test"
}

# Permissions on the service account used by the function and Eventarc trigger
resource "google_project_iam_member" "invoking" {
  project    = data.google_project.project.project_id
  role       = "roles/run.invoker"
  member     = "serviceAccount:${google_service_account.account.email}"
  depends_on = [google_project_iam_member.gcs_pubsub_publishing]
}

resource "google_project_iam_member" "event_receiving" {
  project    = data.google_project.project.project_id
  role       = "roles/eventarc.eventReceiver"
  member     = "serviceAccount:${google_service_account.account.email}"
  depends_on = [google_project_iam_member.invoking]
}

resource "google_project_iam_member" "artifactregistry_reader" {
  project    = data.google_project.project.project_id
  role       = "roles/artifactregistry.reader"
  member     = "serviceAccount:${google_service_account.account.email}"
  depends_on = [google_project_iam_member.event_receiving]
}

resource "google_cloudfunctions2_function" "default" {
  depends_on = [
    google_project_iam_member.event_receiving,
    google_project_iam_member.artifactregistry_reader,
  ]
  name        = "function"
  location    = "us-central1"
  description = "a new function"

  build_config {
    runtime     = "nodejs22"
    entry_point = "entryPoint" # Set the entry point in the code
    environment_variables = {
      BUILD_CONFIG_TEST = "build_test"
    }
    source {
      storage_source {
        bucket = google_storage_bucket.source_bucket.name
        object = google_storage_bucket_object.default.name
      }
    }
  }

  service_config {
    max_instance_count = 3
    min_instance_count = 1
    available_memory   = "256M"
    timeout_seconds    = 60
    environment_variables = {
      SERVICE_CONFIG_TEST = "config_test"
    }
    ingress_settings               = "ALLOW_INTERNAL_ONLY"
    all_traffic_on_latest_revision = true
    service_account_email          = google_service_account.account.email
  }

  event_trigger {
    trigger_region        = "us-central1" # The trigger must be in the same location as the bucket
    event_type            = "google.cloud.storage.object.v1.finalized"
    retry_policy          = "RETRY_POLICY_RETRY"
    service_account_email = google_service_account.account.email
    event_filters {
      attribute = "bucket"
      value     = google_storage_bucket.trigger_bucket.name
    }
  }
}

Siguientes pasos

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