Function

This API is used to query the metadata list.

URI

• URI format

  GET /v1.0/{project_id}/graphs/metadatas?offset={offset}&limit={limit}

• Parameter description

  Table 1 URI parameter description

  Parameter	Mandatory	Type	Description
  project_id	Yes	String	Project ID, which is used for resource isolation. For details, see Obtaining a Project ID.
  offset	No	Integer	Start position of the request. The default value is 0.
  limit	No	Integer	Maximum number of resources displayed on a single page. The default value is 10.

Request

• Request example

  GET https://Endpoint/v1.0/{project_id}/graphs/metadatas?offset=10&limit=100

Response

• Parameter description

  Table 2 Parameter description

  Parameter	Mandatory	Type	Description
  errorMessage	No	String	System prompt. If execution succeeds, this parameter may be left blank. If execution fails, this parameter is used to display the error message.
  errorCode	No	String	System prompt. If execution succeeds, this parameter may be left blank. If execution fails, this parameter is used to display the error code.
  metadataCount	No	Integer	Number of returned metadata files. This parameter is left blank when the request fails.
  metadataList	No	GesSchema set	List of all metadata files under the current project ID. This parameter is left blank when the request fails.

  Table 3 GesSchema data structure

  Parameter	Mandatory	Type	Description
  id	Yes	String	Metadata ID
  name	Yes	String	Metadata name
  description	Yes	String	Metadata description
  status	Yes	String	Whether the metadata is available
  metadataPath	Yes	String	OBS path for storing metadata
  createTimestamp	Yes	String	Metadata creation timestamp
  lastUpdateTimestamp	Yes	String	Last timestamp when the metadata is upgraded

• Response example (successful request)

  HttpStatusCode: 200{
      "schemaCount ": 1,
      "schemaList": [
          {
              "id": "ff7dddc4-6402-43d7-9aed-c5ec677b47fa",
              "name": "schema_demo",
              "description": "",
              "status": "200",
              "metadataPath": "ges-graphs/demo_movie/schema.xml",
              "startTime": "2018-07-23T02:59:41",
              "lastUpdateTime": "2018-07-23T02:59:41"
          }
      ]
  }

• Response example (failed request)

  Http Status: 500
  {
    "errorCode": "GES.7006",
    "errorMessage": "The underlying graph engine has internal error."
  }

Return Value

• Normal

  200

• Abnormal

  Table 4 Return code for failed requests

  Return Value	Description
  400 Bad Request	Request error.
  401 Unauthorized	Authentication failed.
  403 Forbidden	No operation permission.
  404 Not Found	The requested resource was not found.
  500 Internal Server Error	Internal service error.
  503 Service Unavailable	Service unavailable.