feat(dms): add new data source to get tags

Author: Zippo-Wang

docs/data-sources/dms_rocketmq_tags.md

@@ -0,0 +1,44 @@
+---
+subcategory: "Distributed Message Service (DMS)"
+layout: "huaweicloud"
+page_title: "HuaweiCloud: huaweicloud_dms_rocketmq_tags"
+description: |-
+  Use this data source to get the list of RocketMQ tags within HuaweiCloud.
+---
+
+# huaweicloud_dms_rocketmq_tags
+
+Use this data source to get the list of RocketMQ tags within HuaweiCloud.
+
+## Example Usage
+
+```hcl
+data "huaweicloud_dms_rocketmq_tags" "test" {}
+```
+
+## Argument Reference
+
+The following arguments are supported:
+
+* `region` - (Optional, String) Specifies the region in which to query the data source.  
+  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.
+
+* `next_offset` - Indicates the offset for the next page of results.
+
+* `previous_offset` - Indicates the offset for the previous page of results.
+
+* `tags` - Indicates the list of tags.  
+  The [tags](#dms_rocketmq_tags) structure is documented below.
+
+<a name="dms_rocketmq_tags"></a>
+The `tags` block supports:
+
+* `key` - Indicates the tag key.
+
+* `values` - Indicates the list of tag values.

huaweicloud/provider.go

@@ -949,6 +949,7 @@ func Provider() *schema.Provider {
 			"huaweicloud_dms_rocketmq_message_traces":              rocketmq.DataSourceDmsRocketmqMessageTraces(),
 			"huaweicloud_dms_rocketmq_extend_flavors":              rocketmq.DataSourceDmsRocketmqExtendFlavors(),
 			"huaweicloud_dms_rocketmq_messages":                    rocketmq.DataSourceDmsRocketMQMessages(),
+			"huaweicloud_dms_rocketmq_tags":                        rocketmq.DataSourceDmsRocketMQTags(),
 
 			"huaweicloud_dns_custom_lines":        dns.DataSourceCustomLines(),
 			"huaweicloud_dns_floating_ptrrecords": dns.DataSourceFloatingPtrRecords(),

huaweicloud/services/acceptance/rocketmq/data_source_huaweicloud_dms_rocketmq_tags_test.go

@@ -0,0 +1,57 @@
+package rocketmq
+
+import (
+	"testing"
+
+	"github.com/hashicorp/terraform-plugin-sdk/v2/helper/resource"
+
+	"github.com/huaweicloud/terraform-provider-huaweicloud/huaweicloud/services/acceptance"
+)
+
+func TestAccDmsRocketMQTags_basic(t *testing.T) {
+	var (
+		dataSourceName = "data.huaweicloud_dms_rocketmq_tags.test"
+		dc             = acceptance.InitDataSourceCheck(dataSourceName)
+	)
+
+	resource.ParallelTest(t, resource.TestCase{
+		PreCheck:          func() { acceptance.TestAccPreCheck(t) },
+		ProviderFactories: acceptance.TestAccProviderFactories,
+		Steps: []resource.TestStep{
+			{
+				Config: testAccDmsRocketMQTags_basic(),
+				Check: resource.ComposeTestCheckFunc(
+					dc.CheckResourceExists(),
+					resource.TestCheckResourceAttrSet(dataSourceName, "next_offset"),
+					resource.TestCheckResourceAttrSet(dataSourceName, "previous_offset"),
+					resource.TestCheckResourceAttrSet(dataSourceName, "tags.#"),
+					resource.TestCheckOutput("is_tags_exist", "true"),
+					resource.TestCheckOutput("is_key_set", "true"),
+					resource.TestCheckOutput("is_values_set", "true"),
+				),
+			},
+		},
+	})
+}
+
+func testAccDmsRocketMQTags_basic() string {
+	return `
+data "huaweicloud_dms_rocketmq_tags" "test" {}
+
+locals {
+  tags = data.huaweicloud_dms_rocketmq_tags.test.tags
+}
+
+output "is_tags_exist" {
+  value = length(local.tags) >= 0
+}
+
+output "is_key_set" {
+  value = length(local.tags) > 0 ? alltrue([for tag in local.tags : tag.key != ""]) : true
+}
+
+output "is_values_set" {
+  value = length(local.tags) > 0 ? alltrue([for tag in local.tags : length(tag.values) >= 0]) : true
+}
+`
+}

huaweicloud/services/rocketmq/data_source_huaweicloud_dms_rocketmq_tags.go

@@ -0,0 +1,125 @@
+package rocketmq
+
+import (
+	"context"
+	"strings"
+
+	"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/chnsz/golangsdk"
+
+	"github.com/huaweicloud/terraform-provider-huaweicloud/huaweicloud/config"
+	"github.com/huaweicloud/terraform-provider-huaweicloud/huaweicloud/utils"
+)
+
+// @API RocketMQ GET /v2/{project_id}/rocketmq/tags
+func DataSourceDmsRocketMQTags() *schema.Resource {
+	return &schema.Resource{
+		ReadContext: dataSourceDmsRocketMQTagsRead,
+		Schema: map[string]*schema.Schema{
+			"region": {
+				Type:        schema.TypeString,
+				Optional:    true,
+				Computed:    true,
+				Description: `The region in which to query the resource.`,
+			},
+
+			// Attributes
+			"next_offset": {
+				Type:        schema.TypeInt,
+				Computed:    true,
+				Description: `The offset for the next page of results.`,
+			},
+			"previous_offset": {
+				Type:        schema.TypeInt,
+				Computed:    true,
+				Description: `The offset for the previous page of results.`,
+			},
+			"tags": {
+				Type:        schema.TypeList,
+				Computed:    true,
+				Description: `The list of tags.`,
+				Elem: &schema.Resource{
+					Schema: map[string]*schema.Schema{
+						"key": {
+							Type:        schema.TypeString,
+							Computed:    true,
+							Description: `The tag key.`,
+						},
+						"values": {
+							Type:        schema.TypeList,
+							Computed:    true,
+							Elem:        &schema.Schema{Type: schema.TypeString},
+							Description: `The list of tag values.`,
+						},
+					},
+				},
+			},
+		},
+	}
+}
+
+func dataSourceDmsRocketMQTagsRead(_ context.Context, d *schema.ResourceData, meta interface{}) diag.Diagnostics {
+	cfg := meta.(*config.Config)
+	region := cfg.GetRegion(d)
+	client, err := cfg.NewServiceClient("dmsv2", region)
+	if err != nil {
+		return diag.Errorf("error creating DMS RocketMQ client: %s", err)
+	}
+
+	getTagsHttpUrl := "v2/{project_id}/rocketmq/tags"
+	getTagsPath := client.Endpoint + getTagsHttpUrl
+	getTagsPath = strings.ReplaceAll(getTagsPath, "{project_id}", client.ProjectID)
+
+	getTagsOpt := golangsdk.RequestOpts{
+		KeepResponseBody: true,
+		MoreHeaders: map[string]string{
+			"Content-Type": "application/json",
+		},
+	}
+
+	getTagsResp, err := client.Request("GET", getTagsPath, &getTagsOpt)
+	if err != nil {
+		return diag.Errorf("error retrieving DMS RocketMQ tags: %s", err)
+	}
+
+	getTagsRespBody, err := utils.FlattenResponse(getTagsResp)
+	if err != nil {
+		return diag.FromErr(err)
+	}
+
+	randUUID, err := uuid.GenerateUUID()
+	if err != nil {
+		return diag.Errorf("unable to generate ID: %s", err)
+	}
+	d.SetId(randUUID)
+
+	mErr := multierror.Append(nil,
+		d.Set("region", region),
+		d.Set("next_offset", utils.PathSearch("next_offset", getTagsRespBody, nil)),
+		d.Set("previous_offset", utils.PathSearch("previous_offset", getTagsRespBody, nil)),
+		d.Set("tags", flattenRocketMQTags(getTagsRespBody)),
+	)
+
+	return diag.FromErr(mErr.ErrorOrNil())
+}
+
+func flattenRocketMQTags(resp interface{}) []interface{} {
+	if resp == nil {
+		return nil
+	}
+
+	curJson := utils.PathSearch("tags", resp, make([]interface{}, 0))
+	curArray := curJson.([]interface{})
+	rst := make([]interface{}, 0, len(curArray))
+	for _, v := range curArray {
+		rst = append(rst, map[string]interface{}{
+			"key":    utils.PathSearch("key", v, nil),
+			"values": utils.PathSearch("values", v, nil),
+		})
+	}
+	return rst
+}