support iec flavors data source and docs (#779)

* support iec flavors data source and docs

* Add iec_flavors.md to data source docs

* Update data_source_huaweicloud_iec_flavors_test.go

Change list: 
1. Remove useless function parameter rName.
2. Remove flavors name in config and remove parameter check.
3. Use HW_REGION_NAME to instead old type.

docs/data-sources/iec_flavors.md

@@ -0,0 +1,52 @@
+---
+subcategory: "Intelligent EdgeCloud (IEC)"
+---
+
+# huaweicloud\_iec\_flavors
+
+Use this data source to get the available of HuaweiCloud IEC flavors.
+
+## Example Usage
+
+```hcl
+variable "flavor_name" {
+  default = "c6.large.2"
+}
+
+data "huaweicloud_iec_flavors" "iec_flavor_test" {
+  name   = var.flavor_name
+}
+```
+
+## Argument Reference
+
+The following arguments are supported:
+
+* `region` - (Optional, String) The region in which to obtain the flavors. If omitted, the provider-level region will be used.
+
+* `name` -  (Optional, String) Specifies the flavor name, which can be queried 
+    with a regular expression.
+
+* `site_ids` - (Optional, String) Specifies the list of edge service site.
+
+* `area` - (Optional, String) Specifies the province of the iec instance located.
+
+* `province` - (Optional, String) Specifies the province of the iec instance located.
+
+* `city` - (Optional, String) Specifies the province of the iec instance located.
+
+* `operator` - (Optional, String) Specifies the operator supported of the iec instance.
+
+## Attributes Reference
+
+In addition to all arguments above, the following attributes are exported:
+
+* `flavors` - An array of one or more flavors.
+    The flavors object structure is documented below.
+
+The `flavors` block supports:
+
+* `id` - The id of the iec flavor.
+* `name` - The name of the iec flavor.
+* `vcpus` - The vcpus of the iec flavor.
+* `memory` - The memory of the iec flavor.

huaweicloud/data_source_huaweicloud_iec_flavors.go

@@ -0,0 +1,119 @@
+package huaweicloud
+
+import (
+	"fmt"
+	"log"
+	"strconv"
+
+	"github.com/hashicorp/terraform-plugin-sdk/helper/schema"
+	"github.com/huaweicloud/golangsdk/openstack/iec/v1/flavors"
+)
+
+func dataSourceIecFlavors() *schema.Resource {
+	return &schema.Resource{
+		Read: dataSourceIecFlavorsV1Read,
+
+		Schema: map[string]*schema.Schema{
+			"region": {
+				Type:     schema.TypeString,
+				Optional: true,
+				Computed: true,
+			},
+			"name": {
+				Type:     schema.TypeString,
+				Optional: true,
+			},
+			"site_ids": {
+				Type:     schema.TypeString,
+				Optional: true,
+			},
+			"area": {
+				Type:     schema.TypeString,
+				Optional: true,
+			},
+			"province": {
+				Type:     schema.TypeString,
+				Optional: true,
+			},
+			"city": {
+				Type:     schema.TypeString,
+				Optional: true,
+			},
+			"operator": {
+				Type:     schema.TypeString,
+				Optional: true,
+			},
+			"flavors": {
+				Type:     schema.TypeList,
+				Computed: true,
+				Elem: &schema.Resource{
+					Schema: map[string]*schema.Schema{
+						"id": {
+							Type:     schema.TypeString,
+							Computed: true,
+						},
+						"name": {
+							Type:     schema.TypeString,
+							Computed: true,
+						},
+						"vcpus": {
+							Type:     schema.TypeInt,
+							Computed: true,
+						},
+						"memory": {
+							Type:     schema.TypeInt,
+							Computed: true,
+						},
+					},
+				},
+			},
+		},
+	}
+}
+
+func dataSourceIecFlavorsV1Read(d *schema.ResourceData, meta interface{}) error {
+	config := meta.(*Config)
+
+	iecClient, err := config.IECV1Client(GetRegion(d, config))
+	if err != nil {
+		return fmt.Errorf("Error creating HuaweiCloud IEC client: %s", err)
+	}
+
+	listOpts := flavors.ListOpts{
+		Name:     d.Get("name").(string),
+		SiteIDS:  d.Get("site_ids").(string),
+		Area:     d.Get("area").(string),
+		Province: d.Get("province").(string),
+		City:     d.Get("city").(string),
+		Operator: d.Get("operator").(string),
+	}
+	allFlavors, err := flavors.List(iecClient, listOpts).Extract()
+	if err != nil {
+		return fmt.Errorf("Unable to extract iec flavors: %s", err)
+	}
+	total := len(allFlavors.Flavors)
+	if total < 1 {
+		return fmt.Errorf("Your query returned no results of huaweicloud_iec_flavors. " +
+			"Please change your search criteria and try again.")
+	}
+
+	log.Printf("[INFO] Retrieved [%d] IEC flavors using given filter", total)
+	iecFlavors := make([]map[string]interface{}, 0, total)
+	for _, item := range allFlavors.Flavors {
+		val := map[string]interface{}{
+			"id":     item.ID,
+			"name":   item.Name,
+			"memory": item.Ram,
+		}
+		if vcpus, err := strconv.Atoi(item.Vcpus); err == nil {
+			val["vcpus"] = vcpus
+		}
+		iecFlavors = append(iecFlavors, val)
+	}
+	if err := d.Set("flavors", iecFlavors); err != nil {
+		return fmt.Errorf("Error saving IEC flavors: %s", err)
+	}
+
+	d.SetId(allFlavors.Flavors[0].ID)
+	return nil
+}

huaweicloud/data_source_huaweicloud_iec_flavors_test.go

@@ -0,0 +1,51 @@
+package huaweicloud
+
+import (
+	"fmt"
+	"regexp"
+	"testing"
+
+	"github.com/hashicorp/terraform-plugin-sdk/helper/resource"
+	"github.com/hashicorp/terraform-plugin-sdk/terraform"
+)
+
+func TestAccIECFlavorsDataSource_basic(t *testing.T) {
+	resourceName := "data.huaweicloud_iec_flavors.flavors_test"
+
+	resource.ParallelTest(t, resource.TestCase{
+		PreCheck:  func() { testAccPreCheck(t) },
+		Providers: testAccProviders,
+		Steps: []resource.TestStep{
+			{
+				Config: testAccIECFlavorsConfig(),
+				Check: resource.ComposeTestCheckFunc(
+					testAccCheckIECFlavorsDataSourceID(resourceName),
+					resource.TestMatchResourceAttr(resourceName, "flavors.#", regexp.MustCompile("[1-9]\\d*")),
+					resource.TestCheckResourceAttr(resourceName, "region", HW_REGION_NAME),
+				),
+			},
+		},
+	})
+}
+
+func testAccCheckIECFlavorsDataSourceID(n string) resource.TestCheckFunc {
+	return func(s *terraform.State) error {
+		rs, ok := s.RootModule().Resources[n]
+		if !ok {
+			return fmt.Errorf("Root module has no resource called %s", n)
+		}
+
+		if rs.Primary.ID == "" {
+			return fmt.Errorf("IEC flavors data source ID not set")
+		}
+		return nil
+	}
+}
+
+func testAccIECFlavorsConfig() string {
+	return fmt.Sprintf(`
+data "huaweicloud_iec_flavors" "flavors_test" {
+  region = "%s"
+}
+	`, HW_REGION_NAME)
+}

huaweicloud/provider.go

@@ -271,6 +271,7 @@ func Provider() terraform.ResourceProvider {
 			"huaweicloud_gaussdb_mysql_instance":      dataSourceGaussDBMysqlInstance(),
 			"huaweicloud_iam_role":                    dataSourceIAMRoleV3(),
 			"huaweicloud_identity_role":               DataSourceIdentityRoleV3(),
+			"huaweicloud_iec_flavors":                 dataSourceIecFlavors(),
 			"huaweicloud_images_image":                DataSourceImagesImageV2(),
 			"huaweicloud_kms_key":                     dataSourceKmsKeyV1(),
 			"huaweicloud_kms_data_key":                dataSourceKmsDataKeyV1(),

vendor/modules.txt

@@ -268,6 +268,7 @@ github.com/huaweicloud/golangsdk/openstack/identity/v3/roles
 github.com/huaweicloud/golangsdk/openstack/identity/v3/tokens
 github.com/huaweicloud/golangsdk/openstack/identity/v3/users
 github.com/huaweicloud/golangsdk/openstack/iec/v1/common
+github.com/huaweicloud/golangsdk/openstack/iec/v1/flavors
 github.com/huaweicloud/golangsdk/openstack/iec/v1/vpcs
 github.com/huaweicloud/golangsdk/openstack/imageservice/v2/imagedata
 github.com/huaweicloud/golangsdk/openstack/imageservice/v2/images