Querying the Metadata List

Function

Query the metadata list.

Debugging

You can debug this API in API Explorer, which supports automatic authentication. API Explorer automatically generates sample SDK code and provides the debugging function.

URI

GET /v2/{project_id}/graphs/metadatas

**Table 1** URI parameters
Parameter	Mandatory	Type	Description
project_id	Yes	String	Project ID. For details about how to obtain the project ID, see Obtaining a Project ID.

**Table 2** Query parameters
Parameter	Mandatory	Type	Description
limit	No	Integer	Maximum number of resources displayed on a single page. The default value is 10.
offset	No	Integer	Start position of the request. The default value is 0.

Request Parameters

**Table 3** Request header parameter
Parameter	Mandatory	Type	Description
X-Auth-Token	Yes	String	User token. It is used to obtain the permission to call APIs. For details about how to obtain the token, see Authentication. The value of X-Subject-Token in the response header is the token.

Response Parameters

Status code: 200

**Table 4** Response body parameters
Parameter	Type	Description
schema_count	Integer	Number of returned metadata files. This parameter is left blank when the request fails.
schema_list	Array of schema_list objects	List of all metadata files under the current project ID. This parameter is left blank when the request fails.

**Table 5** schema_list
Parameter	Type	Description
id	String	Metadata ID
name	String	Metadata name
start_time	String	Metadata creation time
last_update_time	String	Last update time of the metadata
encrypted	Boolean	Whether metadata is encrypted
description	String	Metadata description
metadata_path	String	Metadata path
status	String	Whether the metadata is available

Status code: 500

**Table 6** Response body parameters
Parameter	Type	Description
error_code	String	System prompt. If the execution succeeds, this parameter may be left blank. If the execution fails, this parameter is used to display the error code.
error_msg	String	System prompt. If the execution succeeds, this parameter may be left blank. If the execution fails, this parameter is used to display the error message.

Example Request

Query the metadata list.

GET https://Endpoint/v2/{project_id}/graphs/metadatas?offset=0&limit=2

Example Response

Status code: 200

Example response for a successful request

{
  "schema_count" : 2,
  "schema_list" : [ {
    "start_time" : "2022-01-21T10:13:31",
    "last_update_time" : "2022-01-21T10:13:31",
    "encrypted" : true,
    "name" : "schema_748e",
    "master_key_id" : "106be30a-733d-45d0-84f3-1c5439381313",
    "description" : "xxxxx",
    "id" : "6634c50e-13aa-4395-8088-6b327f7da694",
    "metadata_path" : "devdata/schema_748e.xml",
    "status" : "200"
  }, {
    "start_time" : "2022-04-12T03:15:17",
    "last_update_time" : "2022-11-16T08:18:32",
    "encrypted" : false,
    "name" : "unionsdk_schema",
    "id" : "6b74069d-3cf3-4cc0-9118-2478e23b87aa",
    "metadata_path" : "devdata/unionsdk/unionsdk_schema.xml",
    "status" : "200"
  } ]
}

Status code: 500

Example response for a failed request

{
  "error_code" : "GES.7006",
  "error_msg" : "The underlying graph engine has internal error."
}

Status Code

Return Value	Description
400 Bad Request	Request error.
401 Unauthorized	Authentication failed.
403 Forbidden	No operation permissions.
404 Not Found	No resources found.
500 Internal Server Error	Internal server error.
503 Service Unavailable	Service unavailable.