Querying ECSs by Tag

Function

This API is used to filter ECSs by tag and obtain all tags of an ECS.

URI

POST /v1/{project_id}/servers/resource_instances/action

Table 1 describes the parameters in the URI.

**Table 1** Parameter description
Parameter	Mandatory	Description
project_id	Yes	Specifies the project ID. For details about how to obtain the ID, see Obtaining a Project ID.

Request

Table 2 describes the request parameters.

**Table 2** Request parameters
Parameter	Mandatory	Type	Description
tags	No	Array of objects	Displays the ECSs with all the specified tags. For details, see Table 3. The structure body must be included. This field cannot be left blank. A key must be unique. Values of the same key must be unique.
not_tags	No	Array of strings	Displays the ECSs with none of specified tags. The structure body must be included. This field cannot be left blank. Keys must be unique. Values of the same key must be unique.
limit	No	String	Limits the maximum number of queried ECSs. The value cannot be a negative number. The maximum value is 1,000. If the action value is count, this parameter is invalid. If the action value is filter, the default value is 1,000.
offset	No	String	Specifies index position. The query starts from the next piece of data indexed by this parameter. The value must be a number and cannot be a negative number. This parameter is not required when data on the first page is queried. When you query the subsequent page data, the value in the response body for the query of the data on the previous page is contained in this parameter. If the action value is count, this parameter is invalid. If the action value is filter, the default value is 0.
action	Yes	String	Specifies the operation, which can be filter or count. filter: filters ECSs by tag. The ECSs that meet the filter criteria are displayed on pages. count: searches ECSs by tag. The number of ECSs that meet the search criteria is displayed.
matches	No	Array of objects	Specifies the search field, which is used to search for ECSs. Currently, only resource_name can be used for search. For more information, see Table 4.

**Table 3** **tag** field description
Parameter	Mandatory	Type	Description
key	Yes	String	Specifies the tag key. A key contains a maximum of 127 Unicode characters. This field cannot be left blank.
values	No	Array of strings	Specifies the tag value. Values of the same tag must be unique. Each value contains a maximum of 255 Unicode characters. If this parameter is not specified, any value can be used. The values are in the OR relationship.

**Table 4** **match** field description
Parameter	Mandatory	Type	Description
key	Yes	String	Specifies the key field to be matched. The tag key can only be resource_name. In such a case, the tag value is the ECS name. The key must be unique, and the value is used for matching. This field is a fixed dictionary value. This field cannot be left blank.
value	Yes	String	Specifies the tag value. The tag key can only be resource_name. In such a case, the tag value is the ECS name. Each value contains a maximum of 255 Unicode characters. This field cannot be left blank.

Response

Table 5 describes the response parameters.

**Table 5** Response parameters
Parameter	Type	Description
resources	Array of objects	Specifies returned ECSs. For details, see Table 6.
total_count	Integer	Specifies the total number of queried ECSs.

**Table 6** **resource** field description
Parameter	Type	Description
resource_id	String	Specifies the ECS ID.
resource_detail	String	Queries ECS details.
tags	Array of objects	Specifies tags.
resource_name	String	Specifies the resource name, which is the ECS name.

**Table 7** **resource_tag** field description
Parameter	Type	Description
key	String	Specifies the tag key. It contains a maximum of 36 Unicode characters. This field cannot be left blank. Can only consist of digits, letters, hyphens (-), and underscores (_).
value	String	Specifies the tag value. Each value contains a maximum of 43 Unicode characters. This field can be left blank. Can only consist of digits, letters, hyphens (-), and underscores (_).

Example Request

POST https://{endpoint}/v1/{project_id}/servers/resource_instances/action

{
    "offset": "100", 
    "limit": "100", 
    "action": "filter", 
    "matches":[
    {
        "key": "resource_name", 
        "value": "ecs_test"
     }], 
    "tags": [
    {
        "key": "key1", 
        "values": [
            "value1", 
            "value2"
        ]
    }]
}

Example Response

Response body when action is set to filter

{
      "resources": [
         {
            "resource_detail": null, 
            "resource_id": "cdfs_cefs_wesas_12_dsad", 
            "resource_name": "ecs_test", 
            "tags": [
                {
                   "key": "key1",
                   "value": "value1"
                }
             ]
         }
       ], 
      "total_count": 1000
}