feat(vertexai): add the data source for Vertex AI Index

.changelog/6940.txt

@@ -0,0 +1,3 @@
+```release-note:new-datasource
+google_vertex_ai_index
+```

google/data_source_vertex_ai_index.go

@@ -0,0 +1,33 @@
+package google
+
+import (
+	"fmt"
+
+	"github.com/hashicorp/terraform-plugin-sdk/v2/helper/schema"
+	"github.com/hashicorp/terraform-provider-google/google/tpgresource"
+	transport_tpg "github.com/hashicorp/terraform-provider-google/google/transport"
+)
+
+func dataSourceVertexAIIndex() *schema.Resource {
+
+	dsSchema := datasourceSchemaFromResourceSchema(ResourceVertexAIIndex().Schema)
+
+	addRequiredFieldsToSchema(dsSchema, "name", "region")
+	addOptionalFieldsToSchema(dsSchema, "project")
+
+	return &schema.Resource{
+		Read:   dataSourceVertexAIIndexRead,
+		Schema: dsSchema,
+	}
+}
+
+func dataSourceVertexAIIndexRead(d *schema.ResourceData, meta interface{}) error {
+	config := meta.(*transport_tpg.Config)
+
+	id, err := tpgresource.ReplaceVars(d, config, "projects/{{project}}/locations/{{region}}/indexes/{{name}}")
+	if err != nil {
+		return fmt.Errorf("Error constructing id: %s", err)
+	}
+	d.SetId(id)
+	return resourceVertexAIIndexRead(d, meta)
+}

google/data_source_vertex_ai_index_test.go

@@ -0,0 +1,91 @@
+package google
+
+import (
+	"testing"
+
+	"github.com/hashicorp/terraform-plugin-sdk/v2/helper/resource"
+	"github.com/hashicorp/terraform-provider-google/google/acctest"
+)
+
+func TestAccDataSourceVertexAIIndex_basic(t *testing.T) {
+	t.Parallel()
+
+	context := map[string]interface{}{
+		"project":       acctest.GetTestProjectFromEnv(),
+		"random_suffix": RandString(t, 10),
+	}
+
+	VcrTest(t, resource.TestCase{
+		PreCheck:                 func() { acctest.AccTestPreCheck(t) },
+		ProtoV5ProviderFactories: ProtoV5ProviderFactories(t),
+		CheckDestroy:             testAccCheckVertexAIIndexDestroyProducer_basic(t),
+		Steps: []resource.TestStep{
+			{
+				Config: testAccDataSourceVertexAIIndex_basic(context),
+				Check: resource.ComposeTestCheckFunc(
+					acctest.CheckDataSourceStateMatchesResourceStateWithIgnores(
+						"data.google_vertex_ai_index.foo",
+						"google_vertex_ai_index.index",
+						// The projects.locations.indexes.get doesn't return the following fields
+						map[string]struct{}{
+							"metadata.0.contents_delta_uri":    {},
+							"metadata.0.is_complete_overwrite": {},
+						},
+					),
+				),
+			},
+		},
+	})
+}
+
+func testAccDataSourceVertexAIIndex_basic(context map[string]interface{}) string {
+	return Nprintf(`
+resource "google_storage_bucket" "bucket" {
+  name     = "%{project}-tf-test-vertex-ai-index-test%{random_suffix}"  # Every bucket name must be globally unique
+  location = "us-central1"
+  uniform_bucket_level_access = true
+}
+
+# The sample data comes from the following link:
+# https://cloud.google.com/vertex-ai/docs/matching-engine/filtering#specify-namespaces-tokens
+resource "google_storage_bucket_object" "data" {
+  name   = "contents/data.json"
+  bucket = google_storage_bucket.bucket.name
+  content = <<EOF
+{"id": "42", "embedding": [0.5, 1.0], "restricts": [{"namespace": "class", "allow": ["cat", "pet"]},{"namespace": "category", "allow": ["feline"]}]}
+{"id": "43", "embedding": [0.6, 1.0], "restricts": [{"namespace": "class", "allow": ["dog", "pet"]},{"namespace": "category", "allow": ["canine"]}]}
+EOF
+}
+
+resource "google_vertex_ai_index" "index" {
+  labels = {
+    foo = "bar"
+  }
+  region   = "us-central1"
+  display_name = "tf-test-test-index%{random_suffix}"
+  description = "index for test"
+  metadata {
+    contents_delta_uri = "gs://${google_storage_bucket.bucket.name}/contents"
+    config {
+      dimensions = 2
+      approximate_neighbors_count = 150
+      distance_measure_type = "DOT_PRODUCT_DISTANCE"
+      algorithm_config {
+        tree_ah_config {
+          leaf_node_embedding_count = 500
+          leaf_nodes_to_search_percent = 7
+        }
+      }
+    }
+  }
+  index_update_method = "BATCH_UPDATE"
+}
+
+data "google_vertex_ai_index" "foo" {
+  name = google_vertex_ai_index.index.name
+  region = google_vertex_ai_index.index.region
+  project = google_vertex_ai_index.index.project
+}
+
+`, context)
+}

google/provider.go

@@ -711,6 +711,7 @@ func Provider() *schema.Provider {
 			"google_tpu_tensorflow_versions":                      DataSourceTpuTensorflowVersions(),
 			"google_vpc_access_connector":                         DataSourceVPCAccessConnector(),
 			"google_redis_instance":                               DataSourceGoogleRedisInstance(),
+			"google_vertex_ai_index":                              dataSourceVertexAIIndex(),
 			// ####### END datasources ###########
 		},
 		ResourcesMap: ResourceMap(),

website/docs/d/google_vertex_ai_index.html.markdown

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+---
+subcategory: "VertexAI"
+description: |-
+  A representation of a collection of database items organized in a way that allows for approximate nearest neighbor (a.k.a ANN) algorithms search.
+---
+
+# google\_vertex\_ai\_index
+
+A representation of a collection of database items organized in a way that allows for approximate nearest neighbor (a.k.a ANN) algorithms search.
+
+
+## Argument Reference
+
+The following arguments are supported:
+
+* `name` - (Required) The name of the index.
+
+* `region` - (Required) The region of the index.
+
+- - -
+
+* `project` - (Optional) The ID of the project in which the resource belongs.
+
+## Attributes Reference
+
+See [google_vertex_ai_index](https://registry.terraform.io/providers/hashicorp/google/latest/docs/resources/vertex_ai_index) resource for details of the available attributes.