Assigning Read Weights
Function
This API is used to assign read weights for nodes. Before calling this API:
- Learn how to authorize and 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, the following identity policy-based permissions are required.
URI
PUT /v3/{project_id}/instances/{instance_id}/proxy/{proxy_id}/weight
|
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 Instance ID, which uniquely identifies an instance. Constraints N/A Range The value contains 36 characters with a suffix of in07. Only letters and digits are allowed. Default Value N/A |
|
proxy_id |
Yes |
String |
Definition Proxy instance ID, which is compliant with the UUID format. Constraints N/A Range The value contains 36 characters with a suffix of po01. Only letters and digits are allowed. Default Value N/A |
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 |
|
Parameter |
Mandatory |
Type |
Description |
|---|---|---|---|
|
master_weight |
No |
Integer |
Definition Read weight of the primary node. Constraints N/A Range 1–1000 Default Value N/A |
|
readonly_nodes |
No |
Array of TaurusModifyProxyWeightReadonlyNode objects |
Definition Read weight information of read replicas (at least one of the two parameters must be specified). Constraints N/A |
|
Parameter |
Mandatory |
Type |
Description |
|---|---|---|---|
|
id |
No |
String |
Definition Read replica ID. Constraints N/A Range The value contains 36 characters, starting with a UUID and ending with no07. Only letters and digits are allowed. Default Value N/A |
|
weight |
No |
Integer |
Definition Weight of the read replica. Constraints N/A Range 1–1000 Default Value N/A |
Response Parameters
Status code: 200
|
Parameter |
Type |
Description |
|---|---|---|
|
job_id |
String |
Definition Task ID. 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
Assigning the weight of the primary node to 100
PUT https://{endpoint}/v3/619d3e78f61b4be68bc5aa0b59edcf7b/instances/e73893ef73754465a8bd2e0857bbf13ein07/proxy/e87088f0b6a345e79db19d57c41fde15po01/weight
{
"master_weight" : 100
}
Example Response
Status code: 200
Success.
{
"job_id" : "04efe8e2-9255-44ae-a98b-d87c11411890"
}
SDK Sample Code
The SDK sample code is as follows.
Assigning the weight of the primary node to 100
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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 SetGaussMySqlProxyWeightSolution { 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(); SetGaussMySqlProxyWeightRequest request = new SetGaussMySqlProxyWeightRequest(); request.withInstanceId("{instance_id}"); request.withProxyId("{proxy_id}"); TaurusModifyProxyWeightRequest body = new TaurusModifyProxyWeightRequest(); body.withMasterWeight(100); request.withBody(body); try { SetGaussMySqlProxyWeightResponse response = client.setGaussMySqlProxyWeight(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()); } } } |
Assigning the weight of the primary node to 100
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# 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 = SetGaussMySqlProxyWeightRequest() request.instance_id = "{instance_id}" request.proxy_id = "{proxy_id}" request.body = TaurusModifyProxyWeightRequest( master_weight=100 ) response = client.set_gauss_my_sql_proxy_weight(request) print(response) except exceptions.ClientRequestException as e: print(e.status_code) print(e.request_id) print(e.error_code) print(e.error_msg) |
Assigning the weight of the primary node to 100
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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 := basic.NewCredentialsBuilder(). WithAk(ak). WithSk(sk). WithProjectId(projectId). Build() client := gaussdb.NewGaussDBClient( gaussdb.GaussDBClientBuilder(). WithRegion(region.ValueOf("<YOUR REGION>")). WithCredential(auth). Build()) request := &model.SetGaussMySqlProxyWeightRequest{} request.InstanceId = "{instance_id}" request.ProxyId = "{proxy_id}" masterWeightTaurusModifyProxyWeightRequest:= int32(100) request.Body = &model.TaurusModifyProxyWeightRequest{ MasterWeight: &masterWeightTaurusModifyProxyWeightRequest, } response, err := client.SetGaussMySqlProxyWeight(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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