Generated AlloyDB types excluded connection_pool_config.pooler_count field

[nancynh]

Checklist

• I did not find a related open issue.
• I did not find a solution in the troubleshooting guide: (https://cloud.google.com/config-connector/docs/troubleshooting)
• If this issue is time-sensitive, I have submitted a corresponding issue with GCP support.

Bug Description

Following up on #5611 (comment), filing a bug for the connection_pool_config.pooler_count field not being included when re-generating the AlloyDB instance types but the other fields like connection_pool_config.enabled and connection_pool_config.flags were. I'm not sure if this is because connection_pool_config.pooler_count is an output only field.

Additional Diagnostic Information

I followed the guide for adding a new field and when I ran:

go run . update-types insert  --parent "google.cloud.alloydb.v1beta.Instance"  --field "connection_pool_config"     --api-dir ${REPO_ROOT}/apis/alloydb/v1beta1

I saw that the types.generated.go file added this:

// +kcc:proto=google.cloud.alloydb.v1beta.Instance.ConnectionPoolConfig
type Instance_ConnectionPoolConfig struct {
	// Optional. Whether to enable Managed Connection Pool (MCP).
	// +kcc:proto:field=google.cloud.alloydb.v1beta.Instance.ConnectionPoolConfig.enabled
	Enabled *bool `json:"enabled,omitempty"`

	// Optional. Connection Pool flags, as a list of "key": "value" pairs.
	// +kcc:proto:field=google.cloud.alloydb.v1beta.Instance.ConnectionPoolConfig.flags
	Flags map[string]string `json:"flags,omitempty"`
}

But I expected it to be something like this:

// +kcc:proto=google.cloud.alloydb.v1beta.Instance.ConnectionPoolConfig
type Instance_ConnectionPoolConfig struct {
	// Optional. Whether to enable Managed Connection Pool (MCP).
	// +kcc:proto:field=google.cloud.alloydb.v1beta.Instance.ConnectionPoolConfig.enabled
	Enabled *bool `json:"enabled,omitempty"`

	// Optional. Connection Pool flags, as a list of "key": "value" pairs.
	// +kcc:proto:field=google.cloud.alloydb.v1beta.Instance.ConnectionPoolConfig.flags
	Flags map[string]string `json:"flags,omitempty"`

	// Output only. The number of running poolers per instance.
	// +kcc:proto:field=google.cloud.alloydb.v1beta.Instance.ConnectionPoolConfig.pooler_count
	PoolerCount *int32 `json:"pooler_count,omitempty"`
}

Kubernetes Cluster Version

Client Version: v1.16.4 Server Version: v1.33.5-gke.1201000

Config Connector Version

0.0.0-dev

Config Connector Mode

namespaced mode (default)

Log Output

The update types command outputted this:

$ go run . update-types insert     --parent "google.cloud.alloydb.v1beta.Instance"     --field "connection_pool_config"     --api-dir ${REPO_ROOT}/apis/alloydb/v1beta1
I1203 21:41:38.255011   40845 fieldinserter.go:188] generate Go code for field connection_pool_config
I1203 21:41:38.255603   40845 fieldinserter.go:194] generate Go code for messge google.cloud.alloydb.v1beta.Instance.ConnectionPoolConfig
I1203 21:41:38.255671   40845 insertfield-ast.go:52] inserting the generated Go code for field connection_pool_config
I1203 21:41:38.262650   40845 insertmessage-ast.go:133] inserted the generated Go struct for proto message google.cloud.alloydb.v1beta.Instance.ConnectionPoolConfig

Steps to reproduce the issue

1. Run REPO_ROOT="$(git rev-parse --show-toplevel)"
2. Run cd $REPO_ROOT/dev/tools/controllerbuilder
3. Run go run . update-types insert --parent "google.cloud.alloydb.v1beta.Instance" --field "connection_pool_config" --api-dir ${REPO_ROOT}/apis/alloydb/v1beta1

YAML snippets

[nancynh]

@maqiuyujoyce Here's the issue I filed as requested in #5611 (comment)