API Overview

OMS provides version query APIs and task management APIs.

**Table 1** OMS APIs
API	Description
Obtaining a Project ID and Task ID	Query a project ID and task ID.
Listing API Versions	Query all API versions of OMS.
Querying an API Version	Query a specified API version of OMS.
Listing Migration Tasks	Query information about all tasks under a user account.
Querying a Migration Task	Query details about a migration task with a specified ID.
Creating a Migration Task	Create a migration task.
Starting a Migration Task	Start a migration task after the migration task has been paused or failed.
Pausing a Migration Task	Stop a migration task that is in the Migrating state.
Deleting a Migration Task	Delete a migration task based on its ID.
Updating the Traffic Limiting Rules of a Migration Task	Update the traffic limiting rules for a migration task before the task is complete.
Updating Tasks in Batches	Update migration tasks in batches. You can update all migration tasks in a migration task group or specify IDs of migration tasks to update them in batches.
Listing Migration Task Groups	List all migration task groups in an account.
Creating a Migration Task Group	Create a migration task group. After a migration task group is created, migration tasks are automatically created in the task group. You do not need to manually call APIs to create migration tasks.
Querying a Migration Task Group	Query the information about a migration task group with a specified ID.
Deleting a Migration Task Group	Delete a migration task group.
Pausing a Migration Task Group	Pause a migration task group when it is in Creating or Monitoring status.
Resuming a Migration Task Group	Resume a paused migration task group with a specified ID.
Restarting a Migration Task Group	Restart a failed migration task group with a specified ID.
Modifying Traffic Limiting Rules for a Migration Task Group	Update the traffic limiting rules for a migration task group before it is completed.
Listing Objects in a Bucket	List objects in a bucket.
Querying CDN Information of a Bucket	Query the CDN information of a bucket.
Listing Buckets	List all buckets.
Querying the Region of a Bucket	Query the region of a bucket.
Checking Whether a Source Bucket Has Objects with a Specified Prefix	Check whether there are objects with a specified prefix in a source bucket.
Querying All Supported Cloud Vendors	Query supported cloud vendors.
Querying Regions Supported for a Cloud Vendor	Query regions supported for a cloud vendor.