feat(GaussDB): add gaussdb opengauss datastores data source

docs/data-sources/gaussdb_opengauss_datastores.md

@@ -0,0 +1,44 @@
+---
+subcategory: "GaussDB"
+layout: "huaweicloud"
+page_title: "HuaweiCloud: huaweicloud_gaussdb_opengauss_datastores"
+description: |-
+  Use this data source to get the list of GaussDB OpenGauss engines.
+---
+
+# huaweicloud_gaussdb_opengauss_datastores
+
+Use this data source to get the list of GaussDB OpenGauss engines.
+
+## Example Usage
+
+```hcl
+data "huaweicloud_gaussdb_opengauss_datastores" "test" {}
+```
+
+## Argument Reference
+
+The following arguments are supported:
+
+* `region` - (Optional, String) Specifies the region in which to query the resource.
+  If omitted, the provider-level region will be used.
+
+## Attribute Reference
+
+In addition to all arguments above, the following attributes are exported:
+
+* `id` - The data source ID.
+
+* `datastores` - Specifies the  DB engines.
+
+  The [datastores](#datastores_struct) structure is documented below.
+
+<a name="datastores_struct"></a>
+The `datastores` block supports:
+
+* `supported_versions` - Specifies the engine versions supported by the deployment model.
+
+* `instance_mode` - Specifies the deployment model.
+  The value can be:
+  + **ha**: primary/standby
+  + **independent**: independent

huaweicloud/provider.go

@@ -800,6 +800,7 @@ func Provider() *schema.Provider {
 			"huaweicloud_gaussdb_redis_flavors":                geminidb.DataSourceGaussDBRedisFlavors(),
 			"huaweicloud_gaussdb_influx_instances":             geminidb.DataSourceGaussDBInfluxInstances(),
 
+			"huaweicloud_gaussdb_opengauss_datastores":     gaussdb.DataSourceGaussdbOpengaussDatastores(),
 			"huaweicloud_gaussdb_opengauss_flavors":        gaussdb.DataSourceGaussdbOpengaussFlavors(),
 			"huaweicloud_gaussdb_opengauss_instance":       gaussdb.DataSourceOpenGaussInstance(),
 			"huaweicloud_gaussdb_opengauss_instances":      gaussdb.DataSourceOpenGaussInstances(),

huaweicloud/services/acceptance/gaussdb/data_source_huaweicloud_gaussdb_opengauss_datastores_test.go

@@ -0,0 +1,39 @@
+package gaussdb
+
+import (
+	"testing"
+
+	"github.com/hashicorp/terraform-plugin-sdk/v2/helper/resource"
+
+	"github.com/huaweicloud/terraform-provider-huaweicloud/huaweicloud/services/acceptance"
+)
+
+func TestAccDataSourceGaussdbOpengaussDatastores_basic(t *testing.T) {
+	dataSource := "data.huaweicloud_gaussdb_opengauss_datastores.test"
+	dc := acceptance.InitDataSourceCheck(dataSource)
+
+	resource.ParallelTest(t, resource.TestCase{
+		PreCheck: func() {
+			acceptance.TestAccPreCheck(t)
+		},
+		ProviderFactories: acceptance.TestAccProviderFactories,
+		Steps: []resource.TestStep{
+			{
+				Config: testDataSourceGaussdbOpengaussDatastores_basic(),
+				Check: resource.ComposeTestCheckFunc(
+					dc.CheckResourceExists(),
+					resource.TestCheckResourceAttrSet(dataSource, "datastores.#"),
+					resource.TestCheckResourceAttrSet(dataSource, "datastores.0.supported_versions.#"),
+					resource.TestCheckResourceAttrSet(dataSource, "datastores.0.supported_versions.0"),
+					resource.TestCheckResourceAttrSet(dataSource, "datastores.0.instance_mode"),
+				),
+			},
+		},
+	})
+}
+
+func testDataSourceGaussdbOpengaussDatastores_basic() string {
+	return `
+data "huaweicloud_gaussdb_opengauss_datastores" "test" {}
+`
+}

huaweicloud/services/gaussdb/data_source_huaweicloud_gaussdb_opengauss_datastores.go

@@ -0,0 +1,115 @@
+// Generated by PMS #473
+package gaussdb
+
+import (
+	"context"
+
+	"github.com/hashicorp/go-multierror"
+	"github.com/hashicorp/go-uuid"
+	"github.com/hashicorp/terraform-plugin-sdk/v2/diag"
+	"github.com/hashicorp/terraform-plugin-sdk/v2/helper/schema"
+	"github.com/tidwall/gjson"
+
+	"github.com/huaweicloud/terraform-provider-huaweicloud/huaweicloud/config"
+	"github.com/huaweicloud/terraform-provider-huaweicloud/huaweicloud/helper/httphelper"
+	"github.com/huaweicloud/terraform-provider-huaweicloud/huaweicloud/helper/schemas"
+)
+
+func DataSourceGaussdbOpengaussDatastores() *schema.Resource {
+	return &schema.Resource{
+		ReadContext: dataSourceGaussdbOpengaussDatastoresRead,
+
+		Schema: map[string]*schema.Schema{
+			"region": {
+				Type:        schema.TypeString,
+				Optional:    true,
+				Computed:    true,
+				Description: `Specifies the region in which to query the resource. If omitted, the provider-level region will be used.`,
+			},
+			"datastores": {
+				Type:        schema.TypeList,
+				Computed:    true,
+				Description: `Specifies the  DB engines.`,
+				Elem: &schema.Resource{
+					Schema: map[string]*schema.Schema{
+						"supported_versions": {
+							Type:        schema.TypeList,
+							Computed:    true,
+							Elem:        &schema.Schema{Type: schema.TypeString},
+							Description: `Specifies the engine versions supported by the deployment model.`,
+						},
+						"instance_mode": {
+							Type:        schema.TypeString,
+							Computed:    true,
+							Description: `Specifies the deployment model.`,
+						},
+					},
+				},
+			},
+		},
+	}
+}
+
+type OpengaussDatastoresDSWrapper struct {
+	*schemas.ResourceDataWrapper
+	Config *config.Config
+}
+
+func newOpengaussDatastoresDSWrapper(d *schema.ResourceData, meta interface{}) *OpengaussDatastoresDSWrapper {
+	return &OpengaussDatastoresDSWrapper{
+		ResourceDataWrapper: schemas.NewSchemaWrapper(d),
+		Config:              meta.(*config.Config),
+	}
+}
+
+func dataSourceGaussdbOpengaussDatastoresRead(_ context.Context, d *schema.ResourceData, meta interface{}) diag.Diagnostics {
+	wrapper := newOpengaussDatastoresDSWrapper(d, meta)
+	lisGauDbDatRst, err := wrapper.ListGaussDbDatastores()
+	if err != nil {
+		return diag.FromErr(err)
+	}
+
+	id, err := uuid.GenerateUUID()
+	if err != nil {
+		return diag.FromErr(err)
+	}
+	d.SetId(id)
+
+	err = wrapper.listGaussDbDatastoresToSchema(lisGauDbDatRst)
+	if err != nil {
+		return diag.FromErr(err)
+	}
+
+	return nil
+}
+
+// @API GaussDB GET /v3/{project_id}/datastores
+func (w *OpengaussDatastoresDSWrapper) ListGaussDbDatastores() (*gjson.Result, error) {
+	client, err := w.NewClient(w.Config, "opengauss")
+	if err != nil {
+		return nil, err
+	}
+
+	uri := "/v3/{project_id}/datastores"
+	return httphelper.New(client).
+		Method("GET").
+		URI(uri).
+		Request().
+		Result()
+}
+
+func (w *OpengaussDatastoresDSWrapper) listGaussDbDatastoresToSchema(body *gjson.Result) error {
+	d := w.ResourceData
+	mErr := multierror.Append(nil,
+		d.Set("region", w.Config.GetRegion(w.ResourceData)),
+		d.Set("datastores", schemas.SliceToList(body.Get("datastores"),
+			func(datastores gjson.Result) any {
+				return map[string]any{
+					"supported_versions": schemas.SliceToStrList(datastores.Get("supported_versions")),
+					"instance_mode":      datastores.Get("instance_mode").Value(),
+				}
+			},
+		)),
+	)
+	return mErr.ErrorOrNil()
+}