doc-exports/docs/rds/api-ref/rds_11_0010.html

Querying Extensions

Function

This API is used to obtain extension information of a specified database.

• Before calling an API, you need to understand the API in Authentication.
• Before calling this API, obtain the required region and endpoint.

Constraints

This operation cannot be performed when the DB instance is in any of the following statuses: creating, changing instance class, changing port, or abnormal.

URI

• URI format

  GET https://{Endpoint}/v3/{project_id}/instances/{instance_id}/extensions?database_name={database_name}&offset={offset}&limit={limit}

• Parameter description

  Table 1 Parameters

  Parameter	Mandatory	Description
  project_id	Yes	Specifies the project ID of a tenant in a region. For details about how to obtain the project ID, see Obtaining a Project ID.
  instance_id	Yes	Specifies the DB instance ID.
  database_name	Yes	The name of the specific database created inside the RDS instance. This is the logical database name, not the RDS instance identifier.
  offset	No	Index offset. The query starts from the next piece of data indexed by this parameter. The value must be a non-negative number. The default value is 0, indicating that the query starts from the first data record.
  limit	No	Number of records to be queried. The value ranges from 1 (inclusive) to 100 (inclusive). The default value is 100.

Request

• Request parameters

  Table 2 Request header parameters

  Parameter	Mandatory	Type	Description
  X-Auth-Token	Yes	String	Specifies the user token. The user token is a response to the API used to obtain a user token.

• URI example

  GET https://rds.eu-de.otc.t-systems.com/v3/0483b6b16e954cb88930a360d2c4e663/instances/f569f1358436479dbcba8603c32cc4aein03/extensions?database_name=db1

Response

• Normal response

  Table 3 Parameters

  Parameter	Type	Description
  extensions	Array of objects	Extension list. For details, see Table 4.
  total_count	Integer	Total number of extensions.

  Table 4 extensions element structure description

  Parameter	Type	Description
  name	String	Extension name.
  database_name	String	The name of the specific database created inside the RDS instance. This is the logical database name, not the RDS instance identifier.
  version	String	Extension version.
  version_update	String	New version that the extension can be upgraded to. If the value of this parameter is different from that of version, the extension can be upgraded.
  shared_preload_libraries	String	Dependent preloaded library.
  created	Boolean	Whether the extension has been created.
  description	String	Extension description.
  enable_install	Boolean	Whether the extension can be installed.

• Example normal response

  { 
     "extensions" : [ { 
       "name" : "pg_cron", 
       "database_name" : "db1", 
       "version" : "1.0", 
       "version_update" : "1.0", 
       "shared_preload_libraries" : "pg_cron", 
       "created" : false,
       "enable_install": false,
       "description" : "pg_cron access method - signature file based index" 
   } ], 
     "total_count" : 1 
   }

• Abnormal response

  For details, see Abnormal Request Results.

Status Code

• Normal

  200

• Abnormal

  For details, see Status Codes.

Error Code

For details, see Error Codes.

Parent topic: Extension Management (RDS for PostgreSQL)