Querying the Current Sessions of an HTAP Instance
Function
This API is used to query the current sessions of an HTAP instance. Before calling this API:
- Learn how to authenticate it.
- Obtain the required region and endpoint.
Calling Method
For details, see Calling APIs.
Authorization Information
Each account has all the permissions required to call all APIs, but IAM users must be assigned the required permissions.
- If you are using role/policy-based authorization, see Permissions and Supported Actions for details on the required permissions.
- If you are using identity policy-based authorization, no identity policy-based permission required for calling this API.
URI
GET /v3/{project_id}/instances/{instance_id}/htap/process
| Parameter | Mandatory | Type | Description |
|---|---|---|---|
| project_id | Yes | String | Definition Project ID of a tenant in a region. To obtain this value, see Obtaining a Project ID. Constraints N/A Range The value contains 32 characters. Only letters and digits are allowed. Default Value N/A |
| instance_id | Yes | String | Definition Standard HTAP instance ID, which is compliant with the UUID format. You can call the API for querying HTAP instances to obtain the ID. Constraints N/A Range The value contains 36 characters with a suffix of in17. Only letters and digits are allowed. Default Value N/A |
| Parameter | Mandatory | Type | Description |
|---|---|---|---|
| limit | No | String | Definition Number of records to be queried. Constraints The value must be an integer and cannot be a negative number. Range 1–100 Default Value 100 |
| offset | No | String | Definition Index offset. The query starts from the next piece of data indexed by this parameter. Constraints The value must be an integer and cannot be a negative number. Range ≥ 0 Default Value 0 |
Request Parameters
| Parameter | Mandatory | Type | Description |
|---|---|---|---|
| X-Auth-Token | Yes | String | Definition User token. To obtain this value, call the IAM API for obtaining a user token. The value of X-Subject-Token in the response header is the token value. Constraints N/A Range N/A Default Value N/A |
| X-Language | No | String | Definition Request language type. Constraints N/A Range Default Value en-us |
Response Parameters
Status code: 200
| Parameter | Type | Description |
|---|---|---|
| process_list | Array of HtapProcessInfo objects | Definition Sessions of a standard HTAP instance. Default Value N/A |
| Parameter | Type | Description |
|---|---|---|
| id | String | Definition Session ID. Range N/A |
| user | String | Definition Session username. Range N/A |
| host | String | Definition Session host. Range N/A |
| state | String | Definition Session status. Range N/A |
| database | String | Definition Database corresponding to the session. Range N/A |
| sql_statement | String | Definition SQL statement executed by the session. Range N/A |
| duration | String | Definition Session duration, in seconds. Range N/A |
| command | String | Definition Session command type. Range N/A |
Status code: 400
| Parameter | Type | Description |
|---|---|---|
| error_code | String | Error code. |
| error_msg | String | Error message. |
Status code: 500
| Parameter | Type | Description |
|---|---|---|
| error_code | String | Error code. |
| error_msg | String | Error message. |
Example Request
Querying the current sessions of an HTAP instance
GET https://{endpoint}/v3/054e292c9880d4992f02c0196d3ea468/instances/af315b8e6aaa41799bd9a31f2de15abcin17/htap/process?offset=1&limit=10 Example Response
Status code: 200
Success.
{
"process_list" : [ {
"id" : "1",
"user" : "user",
"host" : "host",
"state" : "OK",
"database" : "sys",
"sql_statement" : "show full processlist",
"duration" : 10,
"command" : "Query"
} ]
} Status code: 400
Client error.
{
"error_code" : "DBS.200022",
"error_msg" : "Instance not found."
} SDK Sample Code
The SDK sample code is as follows.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 | package com.huaweicloud.sdk.test; import com.huaweicloud.sdk.core.auth.ICredential; import com.huaweicloud.sdk.core.auth.BasicCredentials; import com.huaweicloud.sdk.core.exception.ConnectionException; import com.huaweicloud.sdk.core.exception.RequestTimeoutException; import com.huaweicloud.sdk.core.exception.ServiceResponseException; import com.huaweicloud.sdk.gaussdb.v3.region.GaussDBRegion; import com.huaweicloud.sdk.gaussdb.v3.*; import com.huaweicloud.sdk.gaussdb.v3.model.*; public class ShowHtapProcessListSolution { public static void main(String[] args) { // The AK and SK used for authentication are hard-coded or stored in plaintext, which has great security risks. It is recommended that the AK and SK be stored in ciphertext in configuration files or environment variables and decrypted during use to ensure security. // In this example, AK and SK are stored in environment variables for authentication. Before running this example, set environment variables CLOUD_SDK_AK and CLOUD_SDK_SK in the local environment String ak = System.getenv("CLOUD_SDK_AK"); String sk = System.getenv("CLOUD_SDK_SK"); String projectId = "{project_id}"; ICredential auth = new BasicCredentials() .withProjectId(projectId) .withAk(ak) .withSk(sk); GaussDBClient client = GaussDBClient.newBuilder() .withCredential(auth) .withRegion(GaussDBRegion.valueOf("<YOUR REGION>")) .build(); ShowHtapProcessListRequest request = new ShowHtapProcessListRequest(); request.withInstanceId("{instance_id}"); try { ShowHtapProcessListResponse response = client.showHtapProcessList(request); System.out.println(response.toString()); } catch (ConnectionException e) { e.printStackTrace(); } catch (RequestTimeoutException e) { e.printStackTrace(); } catch (ServiceResponseException e) { e.printStackTrace(); System.out.println(e.getHttpStatusCode()); System.out.println(e.getRequestId()); System.out.println(e.getErrorCode()); System.out.println(e.getErrorMsg()); } } } |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 | # coding: utf-8 import os from huaweicloudsdkcore.auth.credentials import BasicCredentials from huaweicloudsdkgaussdb.v3.region.gaussdb_region import GaussDBRegion from huaweicloudsdkcore.exceptions import exceptions from huaweicloudsdkgaussdb.v3 import * if __name__ == "__main__": # The AK and SK used for authentication are hard-coded or stored in plaintext, which has great security risks. It is recommended that the AK and SK be stored in ciphertext in configuration files or environment variables and decrypted during use to ensure security. # In this example, AK and SK are stored in environment variables for authentication. Before running this example, set environment variables CLOUD_SDK_AK and CLOUD_SDK_SK in the local environment ak = os.environ["CLOUD_SDK_AK"] sk = os.environ["CLOUD_SDK_SK"] projectId = "{project_id}" credentials = BasicCredentials(ak, sk, projectId) client = GaussDBClient.new_builder() \ .with_credentials(credentials) \ .with_region(GaussDBRegion.value_of("<YOUR REGION>")) \ .build() try: request = ShowHtapProcessListRequest() request.instance_id = "{instance_id}" response = client.show_htap_process_list(request) print(response) except exceptions.ClientRequestException as e: print(e.status_code) print(e.request_id) print(e.error_code) print(e.error_msg) |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 | package main import ( "fmt" "github.com/huaweicloud/huaweicloud-sdk-go-v3/core/auth/basic" gaussdb "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/gaussdb/v3" "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/gaussdb/v3/model" region "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/gaussdb/v3/region" ) func main() { // The AK and SK used for authentication are hard-coded or stored in plaintext, which has great security risks. It is recommended that the AK and SK be stored in ciphertext in configuration files or environment variables and decrypted during use to ensure security. // In this example, AK and SK are stored in environment variables for authentication. Before running this example, set environment variables CLOUD_SDK_AK and CLOUD_SDK_SK in the local environment ak := os.Getenv("CLOUD_SDK_AK") sk := os.Getenv("CLOUD_SDK_SK") projectId := "{project_id}" auth, err := basic.NewCredentialsBuilder(). WithAk(ak). WithSk(sk). WithProjectId(projectId). SafeBuild() if err != nil { fmt.Println(err) return } hcClient, err := gaussdb.GaussDBClientBuilder(). WithRegion(region.ValueOf("<YOUR REGION>")). WithCredential(auth). SafeBuild() if err != nil { fmt.Println(err) return } client := gaussdb.NewGaussDBClient(hcClient) request := &model.ShowHtapProcessListRequest{} request.InstanceId = "{instance_id}" response, err := client.ShowHtapProcessList(request) if err == nil { fmt.Printf("%+v\n", response) } else { fmt.Println(err) } } |
For SDK sample code of more programming languages, see the Sample Code tab in API Explorer. SDK sample code can be automatically generated.
Status Code
For details, see Status Codes.
Error Code
For details, see Error Codes.
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