Help Center/ Object Storage Migration Service/ API Reference/ APIs V2 (Recommended)/ Synchronization Task Management/ Creating a Synchronization Event
Updated on 2025-11-18 GMT+08:00
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Creating a Synchronization Event

Function

This API is used to create a synchronization event when source objects need to be synchronized. OMS then synchronizes the objects contained in the synchronization event. This API is available in regions CN North-Beijing4 and CN East-Shanghai1.

Calling Method

For details, see Calling APIs.

Authorization

Each account has all of the permissions required to call all APIs, but IAM users must have the required permissions specifically assigned.

  • If you are using role/policy-based authorization, see the required permissions in Permissions and Supported Actions.
  • If you are using identity policy-based authorization, the permission listed below is required.

    Action

    Access Level

    Resource Type (*: required)

    Condition Key

    Alias

    Dependencies

    oms:synctask:createEvent

    Write

    synctask *

    -

    -

    -

URI

POST /v2/{project_id}/sync-tasks/{sync_task_id}/events

Table 1 Path parameters

Parameter

Mandatory

Type

Description

project_id

Yes

String

The project ID.

Minimum length: 1 character

Maximum length: 1,024 characters

sync_task_id

Yes

String

The synchronization task ID.

Minimum length: 1 character

Maximum length: 1,024 characters

Request

Table 2 Request header parameters

Parameter

Mandatory

Type

Description

X-Auth-Token

Yes

String

The token used for API authentication. Signature authorization is recommended. For details, see "Authentication."

Minimum length: 1 character

Maximum length: 16,384 characters
Table 3 Request body parameters

Parameter

Mandatory

Type

Description

object_keys

Yes

Array of strings

The list of URL-encoded names of objects to be synchronized. A maximum of 10 objects can be included.

Minimum length: 1 character

Maximum length: 16,384 characters

Array length: 1 to 100

Response

Status code: 200

OK. Synchronous event created successfully.

Status code: 400

Table 4 Response body parameters

Parameter

Type

Description

error_msg

String

The error message.

error_code

String

The error code.

Status code: 404

Table 5 Response body parameters

Parameter

Type

Description

error_msg

String

The error message.

error_code

String

The error code.

Status code: 503

Table 6 Response body parameters

Parameter

Type

Description

error_msg

String

The error message.

error_code

String

The error code.

Example Request

  • This example creates a synchronization event for the task 31e9b7e6-6ffb-452f-9842-6ce354d99d75 to synchronize the files test%2F001.txt and test%2F002.txt.

    /v2/f697f813-554a-4f05-bac8-82a183b20878/sync-tasks/31e9b7e6-6ffb-452f-9842-6ce354d99d75/events

{
  "object_keys" : [ "test%2F001.txt", "test%2F002.txt" ]
}

  • This example creates a synchronization event for the task 31e9b7e6-6ffb-452f-9842-6ce354d99d75 to synchronize the file test%2B001.txt.

    /v2/f697f813-554a-4f05-bac8-82a183b20878/sync-tasks/31e9b7e6-6ffb-452f-9842-6ce354d99d75/events

{
  "object_keys" : [ "test%2B001.txt" ]
}

  • This example creates a synchronization event for the task 31e9b7e6-6ffb-452f-9842-6ce354d99d75 to synchronize the file test+001.txt.

    /v2/f697f813-554a-4f05-bac8-82a183b20878/sync-tasks/31e9b7e6-6ffb-452f-9842-6ce354d99d75/events

{
  "object_keys" : [ "test+001.txt" ]
}

Example Response

None

SDK Sample Code

The following shows the sample SDK code.

  • This example creates a synchronization event for the task 31e9b7e6-6ffb-452f-9842-6ce354d99d75 to synchronize the files test%2F001.txt and test%2F002.txt.

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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.oms.v2.region.OmsRegion;
import com.huaweicloud.sdk.oms.v2.*;
import com.huaweicloud.sdk.oms.v2.model.*;

import java.util.List;
import java.util.ArrayList;

public class CreateSyncEventsSolution {

    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);

        OmsClient client = OmsClient.newBuilder()
                .withCredential(auth)
                .withRegion(OmsRegion.valueOf("<YOUR REGION>"))
                .build();
        CreateSyncEventsRequest request = new CreateSyncEventsRequest();
        request.withSyncTaskId("{sync_task_id}");
        SyncObjectReq body = new SyncObjectReq();
        List<String> listbodyObjectKeys = new ArrayList<>();
        listbodyObjectKeys.add("test%2F001.txt");
        listbodyObjectKeys.add("test%2F002.txt");
        body.withObjectKeys(listbodyObjectKeys);
        request.withBody(body);
        try {
            CreateSyncEventsResponse response = client.createSyncEvents(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());
        }
    }
}

  • This example creates a synchronization event for the task 31e9b7e6-6ffb-452f-9842-6ce354d99d75 to synchronize the file test%2B001.txt.

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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.oms.v2.region.OmsRegion;
import com.huaweicloud.sdk.oms.v2.*;
import com.huaweicloud.sdk.oms.v2.model.*;

import java.util.List;
import java.util.ArrayList;

public class CreateSyncEventsSolution {

    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);

        OmsClient client = OmsClient.newBuilder()
                .withCredential(auth)
                .withRegion(OmsRegion.valueOf("<YOUR REGION>"))
                .build();
        CreateSyncEventsRequest request = new CreateSyncEventsRequest();
        request.withSyncTaskId("{sync_task_id}");
        SyncObjectReq body = new SyncObjectReq();
        List<String> listbodyObjectKeys = new ArrayList<>();
        listbodyObjectKeys.add("test%2B001.txt");
        body.withObjectKeys(listbodyObjectKeys);
        request.withBody(body);
        try {
            CreateSyncEventsResponse response = client.createSyncEvents(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());
        }
    }
}

  • This example creates a synchronization event for the task 31e9b7e6-6ffb-452f-9842-6ce354d99d75 to synchronize the file test+001.txt.

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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.oms.v2.region.OmsRegion;
import com.huaweicloud.sdk.oms.v2.*;
import com.huaweicloud.sdk.oms.v2.model.*;

import java.util.List;
import java.util.ArrayList;

public class CreateSyncEventsSolution {

    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);

        OmsClient client = OmsClient.newBuilder()
                .withCredential(auth)
                .withRegion(OmsRegion.valueOf("<YOUR REGION>"))
                .build();
        CreateSyncEventsRequest request = new CreateSyncEventsRequest();
        request.withSyncTaskId("{sync_task_id}");
        SyncObjectReq body = new SyncObjectReq();
        List<String> listbodyObjectKeys = new ArrayList<>();
        listbodyObjectKeys.add("test+001.txt");
        body.withObjectKeys(listbodyObjectKeys);
        request.withBody(body);
        try {
            CreateSyncEventsResponse response = client.createSyncEvents(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());
        }
    }
}

  • This example creates a synchronization event for the task 31e9b7e6-6ffb-452f-9842-6ce354d99d75 to synchronize the files test%2F001.txt and test%2F002.txt.

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    # coding: utf-8

import os
from huaweicloudsdkcore.auth.credentials import BasicCredentials
from huaweicloudsdkoms.v2.region.oms_region import OmsRegion
from huaweicloudsdkcore.exceptions import exceptions
from huaweicloudsdkoms.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 = OmsClient.new_builder() \
        .with_credentials(credentials) \
        .with_region(OmsRegion.value_of("<YOUR REGION>")) \
        .build()

    try:
        request = CreateSyncEventsRequest()
        request.sync_task_id = "{sync_task_id}"
        listObjectKeysbody = [
            "test%2F001.txt",
            "test%2F002.txt"
        ]
        request.body = SyncObjectReq(
            object_keys=listObjectKeysbody
        )
        response = client.create_sync_events(request)
        print(response)
    except exceptions.ClientRequestException as e:
        print(e.status_code)
        print(e.request_id)
        print(e.error_code)
        print(e.error_msg)

  • This example creates a synchronization event for the task 31e9b7e6-6ffb-452f-9842-6ce354d99d75 to synchronize the file test%2B001.txt.

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    # coding: utf-8

import os
from huaweicloudsdkcore.auth.credentials import BasicCredentials
from huaweicloudsdkoms.v2.region.oms_region import OmsRegion
from huaweicloudsdkcore.exceptions import exceptions
from huaweicloudsdkoms.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 = OmsClient.new_builder() \
        .with_credentials(credentials) \
        .with_region(OmsRegion.value_of("<YOUR REGION>")) \
        .build()

    try:
        request = CreateSyncEventsRequest()
        request.sync_task_id = "{sync_task_id}"
        listObjectKeysbody = [
            "test%2B001.txt"
        ]
        request.body = SyncObjectReq(
            object_keys=listObjectKeysbody
        )
        response = client.create_sync_events(request)
        print(response)
    except exceptions.ClientRequestException as e:
        print(e.status_code)
        print(e.request_id)
        print(e.error_code)
        print(e.error_msg)

  • This example creates a synchronization event for the task 31e9b7e6-6ffb-452f-9842-6ce354d99d75 to synchronize the file test+001.txt.

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    # coding: utf-8

import os
from huaweicloudsdkcore.auth.credentials import BasicCredentials
from huaweicloudsdkoms.v2.region.oms_region import OmsRegion
from huaweicloudsdkcore.exceptions import exceptions
from huaweicloudsdkoms.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 = OmsClient.new_builder() \
        .with_credentials(credentials) \
        .with_region(OmsRegion.value_of("<YOUR REGION>")) \
        .build()

    try:
        request = CreateSyncEventsRequest()
        request.sync_task_id = "{sync_task_id}"
        listObjectKeysbody = [
            "test+001.txt"
        ]
        request.body = SyncObjectReq(
            object_keys=listObjectKeysbody
        )
        response = client.create_sync_events(request)
        print(response)
    except exceptions.ClientRequestException as e:
        print(e.status_code)
        print(e.request_id)
        print(e.error_code)
        print(e.error_msg)

  • This example creates a synchronization event for the task 31e9b7e6-6ffb-452f-9842-6ce354d99d75 to synchronize the files test%2F001.txt and test%2F002.txt.

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    package main

import (
	"fmt"
	"github.com/huaweicloud/huaweicloud-sdk-go-v3/core/auth/basic"
    oms "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/oms/v2"
	"github.com/huaweicloud/huaweicloud-sdk-go-v3/services/oms/v2/model"
    region "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/oms/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 := oms.NewOmsClient(
        oms.OmsClientBuilder().
            WithRegion(region.ValueOf("<YOUR REGION>")).
            WithCredential(auth).
            Build())

    request := &model.CreateSyncEventsRequest{}
	request.SyncTaskId = "{sync_task_id}"
	var listObjectKeysbody = []string{
        "test%2F001.txt",
	    "test%2F002.txt",
    }
	request.Body = &model.SyncObjectReq{
		ObjectKeys: listObjectKeysbody,
	}
	response, err := client.CreateSyncEvents(request)
	if err == nil {
        fmt.Printf("%+v\n", response)
    } else {
        fmt.Println(err)
    }
}

  • This example creates a synchronization event for the task 31e9b7e6-6ffb-452f-9842-6ce354d99d75 to synchronize the file test%2B001.txt.

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    package main

import (
	"fmt"
	"github.com/huaweicloud/huaweicloud-sdk-go-v3/core/auth/basic"
    oms "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/oms/v2"
	"github.com/huaweicloud/huaweicloud-sdk-go-v3/services/oms/v2/model"
    region "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/oms/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 := oms.NewOmsClient(
        oms.OmsClientBuilder().
            WithRegion(region.ValueOf("<YOUR REGION>")).
            WithCredential(auth).
            Build())

    request := &model.CreateSyncEventsRequest{}
	request.SyncTaskId = "{sync_task_id}"
	var listObjectKeysbody = []string{
        "test%2B001.txt",
    }
	request.Body = &model.SyncObjectReq{
		ObjectKeys: listObjectKeysbody,
	}
	response, err := client.CreateSyncEvents(request)
	if err == nil {
        fmt.Printf("%+v\n", response)
    } else {
        fmt.Println(err)
    }
}

  • This example creates a synchronization event for the task 31e9b7e6-6ffb-452f-9842-6ce354d99d75 to synchronize the file test+001.txt.

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    package main

import (
	"fmt"
	"github.com/huaweicloud/huaweicloud-sdk-go-v3/core/auth/basic"
    oms "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/oms/v2"
	"github.com/huaweicloud/huaweicloud-sdk-go-v3/services/oms/v2/model"
    region "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/oms/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 := oms.NewOmsClient(
        oms.OmsClientBuilder().
            WithRegion(region.ValueOf("<YOUR REGION>")).
            WithCredential(auth).
            Build())

    request := &model.CreateSyncEventsRequest{}
	request.SyncTaskId = "{sync_task_id}"
	var listObjectKeysbody = []string{
        "test+001.txt",
    }
	request.Body = &model.SyncObjectReq{
		ObjectKeys: listObjectKeysbody,
	}
	response, err := client.CreateSyncEvents(request)
	if err == nil {
        fmt.Printf("%+v\n", response)
    } else {
        fmt.Println(err)
    }
}

For SDK code examples in more programming languages, visit API Explorer and click the Sample Code tab. Example code can be automatically generated.

Status Codes

Status Code

Description

200

OK. Synchronous event created successfully.

400

Bad request. Invalid parameters.

404

Not found. Synchronization task not found.

503

Service unavailable. Please try again later.

Error Codes

For details, see Error Codes.

Parent Topic: Synchronization Task Management