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Help Center/ Distributed Database Middleware/ API Reference/ APIs (Recommended)/ DDM Instances/ Querying DDM Engine Information

Querying DDM Engine Information

Updated on 2022-09-15 GMT+08:00

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Function

This API is used to query information about DDM engine.

Constraints

None

URI

GET /v2/{project_id}/engines

**Table 1** Path parameters
Parameter	Mandatory	Type	Description
project_id	Yes	String	Project ID of a tenant in a region

**Table 2** Query parameters
Parameter	Mandatory	Type	Description
offset	No	Integer	Which page the server starts returning items. The start value cannot be less than 0. The default value is 0. Minimum value: 0
limit	No	Integer	Number of records displayed on each page. The value is greater than 0 and not greater than 128. The default value is 128. Minimum value: 1 Maximum value: 128

Request Parameters

**Table 3** Request header parameters
Parameter	Mandatory	Type	Description
X-Auth-Token	Yes	String	User token It can be obtained by calling an IAM API. The value of X-Subject-Token in the response header is the user token.

Response Parameters

Status code: 200

**Table 4** Response body parameters
Parameter	Type	Description
engineGroups	Array of EngineGroupsInfo objects	Information of available engines
offset	Integer	Which page the server starts returning items
limit	Integer	Number of records displayed on each page
total	Integer	Number of engine versions

**Table 5** EngineGroupsInfo
Parameter	Type	Description
id	String	Engine ID
name	String	Engine name
version	String	Engine version
supportAzs	Array of SupportAzsInfo objects	AZs

**Table 6** SupportAzsInfo
Parameter	Type	Description
code	String	AZ code
name	String	AZ name
favored	Boolean	Whether the current AZ is supported

Status code: 400

**Table 7** Response body parameters
Parameter	Type	Description
errCode	String	Service error code
externalMessage	String	Error message

Status code: 500

**Table 8** Response body parameters
Parameter	Type	Description
errCode	String	Service error code
externalMessage	String	Error message

Example Request

GET https://{endpoint}/v2/{project_id}/engines

Example Response

Status code: 200

{
  "engineGroups" : [ {
    "id" : "b6907aa2-aacb-3ac9-9782-b90b152d456c,",
    "name" : "ddm,",
    "version" : "3.0.8,",
    "supportAzs" : [ {
      "code" : "az1xahz,",
      "name" : "az1xahz,",
      "favored" : false
    }, {
      "code" : "az2xahz,",
      "name" : "az2xahz,",
      "favored" : true
    } ]
  } ],
  "offset" : "0,",
  "limit" : "128,",
  "total" : 1
}

Status code: 400

bad request

{
  "externalMessage" : "Parameter error.",
  "errCode" : "DBS.280001"
}

Status code: 500

server error

{
  "externalMessage" : "Server failure.",
  "errCode" : "DBS.200412"
}

Status Codes

Status Code	Description
200	OK
400	bad request
500	server error

Error Codes

For details, see Error Codes.

Parent topic: DDM Instances

Previous topic: Modifying Parameters of a DDM Instance

Next topic: Querying DDM Node Classes Available in an AZ

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