Add database_type to google_app_engine_application

[salrashid123]

fixes #3657

Adds the database_type enum as a parameter that allows creation of firestore backend

provider "google" {}

resource "google_app_engine_application" "app" {
  project = "mineral-minutia-820"
  location_id = "us-central"
  database_type = "DATABASE_TYPE_UNSPECIFIED"
}

ref: https://cloud.google.com/appengine/docs/admin-api/reference/rest/v1beta/apps#DatabaseType

---

do not merge yet: i had to bump the google api dependency version

[c2thorn]

Hi @salrashid123, thanks for doing this. The changes looks fine, however they will need to be upstreamed to https://github.com/GoogleCloudPlatform/magic-modules which generates changes for this provider and google-beta.
Essentially, this PR can be reduced to bumping the api dependency version and modifying the upstream files (resource, test, web) will do the rest. Also the beta provider will need the api version to be bumped as well.

If you don't have time to do this, I should be able to get to it early tomorrow.

[salrashid123]

hi @c2thorn

please do merge upstream when you can.
(i have a pretty remarkable trackrecord of goofing PRs at the last min. (squash+merge, etc)

[c2thorn]

Can DATABASE_TYPE_UNSPECIFIED actually be set in the API? This test is failing because the API returns CLOUD_DATASTORE_COMPATIBILITY and causes a diff.

[c2thorn]

I tried setting to CLOUD_DATASTORE but got An internal error occurred while provisioning Datastore.. Were you able to try out this test?

[salrashid123]

i think the GAE Admin api isn't returning the "already exists" error or something.

for example, i can mutate the databaseType after i set it and it still returns a valid response. It should return some error,

---

I tested it several times, by using the DATABASE_TYPE_UNSPECIFIED (which does use CLOUD_DATASTORE_COMPATIBLITY on its own unilaterally on the serverside (i.,e it looks to be the default unspecified type)

• dstest1-280522

On a clean project, start off with DATABASE_TYPE_UNSPECIFIED

resource "google_app_engine_application" "app" {
  project = "dstest1-280522"
  location_id = "us-central"
  database_type = "DATABASE_TYPE_UNSPECIFIED"
}

$ terraform apply

# google_app_engine_application.app will be created
+ resource "google_app_engine_application" "app" {
    + app_id            = (known after apply)
    + auth_domain       = (known after apply)
    + code_bucket       = (known after apply)
    + database_type     = "DATABASE_TYPE_UNSPECIFIED"
    + default_bucket    = (known after apply)
    + default_hostname  = (known after apply)
    + gcr_domain        = (known after apply)
    + id                = (known after apply)
    + location_id       = "us-central"
    + name              = (known after apply)
    + project           = "dstest1-280522"
    + serving_status    = (known after apply)
    + url_dispatch_rule = (known after apply)

    + feature_settings {
        + split_health_checks = (known after apply)
      }
  }

the storage type is changed from
DATABASE_TYPE_UNSPECIFIED --> CLOUD_DATASTORE_COMPATIBILITY

$ gcloud app describe --project dstest1-280522 --format="value(databaseType)"
CLOUD_DATASTORE_COMPATIBILITY

then try change to firestore

resource "google_app_engine_application" "app" {
  project = "dstest1-280522"
  location_id = "us-central"
  database_type = "CLOUD_FIRESTORE"
}

# google_app_engine_application.app will be updated in-place
~ resource "google_app_engine_application" "app" {
      app_id            = "dstest1-280522"
      auth_domain       = "gmail.com"
      code_bucket       = "staging.dstest1-280522.appspot.com"
    ~ database_type     = "CLOUD_DATASTORE_COMPATIBILITY" -> "CLOUD_FIRESTORE"
      default_bucket    = "dstest1-280522.appspot.com"
      default_hostname  = "dstest1-280522.uc.r.appspot.com"
      gcr_domain        = "us.gcr.io"
      id                = "dstest1-280522"
      location_id       = "us-central"
      name              = "apps/dstest1-280522"
      project           = "dstest1-280522"
      serving_status    = "SERVING"
      url_dispatch_rule = []

      feature_settings {
          split_health_checks = true
      }
  }

No errors

but its still CLOUD_DATASTORE_COMPATIBILITY

  $ gcloud app describe --project dstest1-280522 --format="value(databaseType)"
  CLOUD_DATASTORE_COMPATIBILITY

Try again on a clean project

• dstest2-280523

$ gcloud app describe --project dstest2-280523  --format="value(databaseType)"
ERROR: (gcloud.app.describe) The current Google Cloud project [dstest2-280523] does not contain an App Engine application. Use `gcloud app create` to initialize an App Engine application within the project.

First set to CLOUD_FIRESTORE

# google_app_engine_application.app will be created
+ resource "google_app_engine_application" "app" {
    + app_id            = (known after apply)
    + auth_domain       = (known after apply)
    + code_bucket       = (known after apply)
    + database_type     = "CLOUD_FIRESTORE"
    + default_bucket    = (known after apply)
    + default_hostname  = (known after apply)
    + gcr_domain        = (known after apply)
    + id                = (known after apply)
    + location_id       = "us-central"
    + name              = (known after apply)
    + project           = "dstest2-280523"
    + serving_status    = (known after apply)
    + url_dispatch_rule = (known after apply)

    + feature_settings {
        + split_health_checks = (known after apply)
      }
  }

That succeeds:

$ gcloud app describe --project dstest2-280523  --format="value(databaseType)"
CLOUD_FIRESTORE

Try to change to CLOUD_DATASTORE (this should fail)

# google_app_engine_application.app will be updated in-place
~ resource "google_app_engine_application" "app" {
      app_id            = "dstest2-280523"
      auth_domain       = "gmail.com"
      code_bucket       = "staging.dstest2-280523.appspot.com"
    ~ database_type     = "CLOUD_FIRESTORE" -> "CLOUD_DATASTORE"
      default_bucket    = "dstest2-280523.appspot.com"
      default_hostname  = "dstest2-280523.uc.r.appspot.com"
      gcr_domain        = "us.gcr.io"
      id                = "dstest2-280523"
      location_id       = "us-central"
      name              = "apps/dstest2-280523"
      project           = "dstest2-280523"
      serving_status    = "SERVING"
      url_dispatch_rule = []

      feature_settings {
          split_health_checks = true
      }
  }

but the api seems to suceed but its still CLOUD_FIRESTORE

  $ gcloud app describe --project dstest2-280523  --format="value(databaseType)"
  CLOUD_FIRESTORE

---

[c2thorn]

See my comment below, we can probably remove this value.

[c2thorn]

After internal discussion, closing this in favor of GoogleCloudPlatform/magic-modules#3646

[ghost]

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