Creating an Expired Key Scan Task
Function
This API is used to create an expired key scan task. Redis 3.0 does not support expired key scan.
The keyspace will be scanned to release the memory used by expired keys that were not released due to the lazy free mechanism.
This scan is on the master node of the instance and will affect instance performance. Perform this operation during off-peak hours.
Calling Method
For details, see Calling APIs.
URI
POST /v2/{project_id}/instances/{instance_id}/scan-expire-keys-task
Parameter |
Mandatory |
Type |
Description |
---|---|---|---|
project_id |
Yes |
String |
Parameter description: Project ID. For details, see Obtaining a Project ID. Constraints: N/A Value range: N/A Default value: N/A |
instance_id |
Yes |
String |
Parameter description: Instance ID. It can be viewed on the instance details page on the DCS console. Constraints: N/A Value range: N/A Default value: N/A |
Request Parameters
None
Response Parameters
Status code: 200
Parameter |
Type |
Description |
---|---|---|
id |
String |
Parameter description: Expired key scan ID. Value range: N/A |
instance_id |
String |
Parameter description: Instance ID. Value range: N/A |
status |
String |
Parameter description: Status of the expired key scan task. Value range:
|
scan_type |
String |
Parameter description: Scan mode. Value range:
|
created_at |
String |
Parameter description: Time when a scan task is created. The format is 2020-06-15T02:21:18.669Z. Value range: N/A |
started_at |
String |
Parameter description: Time when a scan task started. The format is 2020-06-15T02:21:18.669Z. (The value is null and is not returned when the scan task is being created.) Value range: N/A |
finished_at |
String |
Parameter description: Time when a scan task ended. The format is 2020-06-15T02:21:18.669Z. (The value is null and is not returned when the scan task is being created.) Value range: N/A |
Status code: 400
Parameter |
Type |
Description |
---|---|---|
error_msg |
String |
Parameter description: Error information. Value range: N/A |
error_code |
String |
Parameter description: Error code. Value range: For details, see Error Codes. |
error_ext_msg |
String |
Parameter description: Extended error information. This parameter is not used currently and is set to null. Value range: N/A |
Status code: 401
Parameter |
Type |
Description |
---|---|---|
error_msg |
String |
Parameter description: Error information. Value range: N/A |
error_code |
String |
Parameter description: Error code. Value range: For details, see Error Codes. |
error_ext_msg |
String |
Parameter description: Extended error information. This parameter is not used currently and is set to null. Value range: N/A |
Status code: 403
Parameter |
Type |
Description |
---|---|---|
error_msg |
String |
Parameter description: Error information. Value range: N/A |
error_code |
String |
Parameter description: Error code. Value range: For details, see Error Codes. |
error_ext_msg |
String |
Parameter description: Extended error information. This parameter is not used currently and is set to null. Value range: N/A |
Status code: 404
Parameter |
Type |
Description |
---|---|---|
error_msg |
String |
Parameter description: Error information. Value range: N/A |
error_code |
String |
Parameter description: Error code. Value range: For details, see Error Codes. |
error_ext_msg |
String |
Parameter description: Extended error information. This parameter is not used currently and is set to null. Value range: N/A |
Status code: 500
Parameter |
Type |
Description |
---|---|---|
error_msg |
String |
Parameter description: Error information. Value range: N/A |
error_code |
String |
Parameter description: Error code. Value range: For details, see Error Codes. |
error_ext_msg |
String |
Parameter description: Extended error information. This parameter is not used currently and is set to null. Value range: N/A |
Example Requests
POST https://{dcs_endpoint}/v2/a4d31cb6-3d72-4fdc-8ec9-6e3a41e47f71/instances/5560df16-cebf-4473-95c4-d1b573c16e79/scan-expire-keys-task
Example Responses
Status code: 200
Expired key scan task created successfully.
{
"id" : "aa735b6f-3d70-44e3-9771-66c6fae7459a",
"instance_id" : "5560df16-cebf-4473-95c4-d1b573c16e79",
"status" : "waiting",
"scan_type" : "manual",
"created_at" : "2020-06-15T02:21:18.669Z"
}
Status code: 400
Invalid request.
{
"error_code" : "DCS.4818",
"error_msg" : "Do not support auto expire scan."
}
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.dcs.v2.region.DcsRegion;
import com.huaweicloud.sdk.dcs.v2.*;
import com.huaweicloud.sdk.dcs.v2.model.*;
public class CreateAutoExpireScanTaskSolution {
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);
DcsClient client = DcsClient.newBuilder()
.withCredential(auth)
.withRegion(DcsRegion.valueOf("<YOUR REGION>"))
.build();
CreateAutoExpireScanTaskRequest request = new CreateAutoExpireScanTaskRequest();
request.withInstanceId("{instance_id}");
try {
CreateAutoExpireScanTaskResponse response = client.createAutoExpireScanTask(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 huaweicloudsdkdcs.v2.region.dcs_region import DcsRegion
from huaweicloudsdkcore.exceptions import exceptions
from huaweicloudsdkdcs.v2 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 = DcsClient.new_builder() \
.with_credentials(credentials) \
.with_region(DcsRegion.value_of("<YOUR REGION>")) \
.build()
try:
request = CreateAutoExpireScanTaskRequest()
request.instance_id = "{instance_id}"
response = client.create_auto_expire_scan_task(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 |
package main
import (
"fmt"
"github.com/huaweicloud/huaweicloud-sdk-go-v3/core/auth/basic"
dcs "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/dcs/v2"
"github.com/huaweicloud/huaweicloud-sdk-go-v3/services/dcs/v2/model"
region "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/dcs/v2/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 := dcs.NewDcsClient(
dcs.DcsClientBuilder().
WithRegion(region.ValueOf("<YOUR REGION>")).
WithCredential(auth).
Build())
request := &model.CreateAutoExpireScanTaskRequest{}
request.InstanceId = "{instance_id}"
response, err := client.CreateAutoExpireScanTask(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.
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.dcs.v2.region.DcsRegion;
import com.huaweicloud.sdk.dcs.v2.*;
import com.huaweicloud.sdk.dcs.v2.model.*;
public class CreateAutoExpireScanTaskSolution {
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);
DcsClient client = DcsClient.newBuilder()
.withCredential(auth)
.withRegion(DcsRegion.valueOf("<YOUR REGION>"))
.build();
CreateAutoExpireScanTaskRequest request = new CreateAutoExpireScanTaskRequest();
request.withInstanceId("{instance_id}");
try {
CreateAutoExpireScanTaskResponse response = client.createAutoExpireScanTask(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 huaweicloudsdkdcs.v2.region.dcs_region import DcsRegion
from huaweicloudsdkcore.exceptions import exceptions
from huaweicloudsdkdcs.v2 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 = DcsClient.new_builder() \
.with_credentials(credentials) \
.with_region(DcsRegion.value_of("<YOUR REGION>")) \
.build()
try:
request = CreateAutoExpireScanTaskRequest()
request.instance_id = "{instance_id}"
response = client.create_auto_expire_scan_task(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 |
package main
import (
"fmt"
"github.com/huaweicloud/huaweicloud-sdk-go-v3/core/auth/basic"
dcs "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/dcs/v2"
"github.com/huaweicloud/huaweicloud-sdk-go-v3/services/dcs/v2/model"
region "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/dcs/v2/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 := dcs.NewDcsClient(
dcs.DcsClientBuilder().
WithRegion(region.ValueOf("<YOUR REGION>")).
WithCredential(auth).
Build())
request := &model.CreateAutoExpireScanTaskRequest{}
request.InstanceId = "{instance_id}"
response, err := client.CreateAutoExpireScanTask(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 Codes
Status Code |
Description |
---|---|
200 |
Expired key scan task created successfully. |
400 |
Invalid request. |
401 |
Invalid authentication information. |
403 |
Request rejected. |
404 |
The requested resource could not be found. |
500 |
Internal service error. |
Error Codes
See Error Codes.
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