doc-exports/docs/obs/api-ref/obs_04_0005.html

API Overview

API Operations on Buckets

Table 1 API operations on buckets

Operation	Description
Listing Buckets	Queries the list of buckets created by the user.
Creating a Bucket	Creates a bucket. You can add different request headers to specify the region, storage class, and permission control policy.
Listing Objects in a Bucket	Lists objects in a bucket. You can add different request headers to obtain objects that match the specified prefix, identifier, and other requirements.
Obtaining Bucket Metadata	Checks whether the bucket metadata exists. You can query the information about the bucket region, storage class, OBS version number, enterprise project ID, and CORS configuration.
Obtaining Bucket Location	Obtains the bucket region information.
Deleting Buckets	Deletes a specified bucket. Before deleting a bucket, ensure that the bucket is empty.

API Operations on Advanced Bucket Settings

Table 2 API operations on advanced bucket settings

Operation	Description
Configuring a Bucket Policy	Creates or modifies a bucket policy. If the specified bucket already has a policy, the policy in the request will overwrite the existing one.
Obtaining Bucket Policy Information	Obtains the policy information of a specified bucket.
Deleting a Bucket Policy	Deletes the policy of a specified bucket.
Configuring a Bucket ACL	Configures the ACL of a specified bucket. You can control the read and write permissions of a bucket through ACL settings.
Obtaining Bucket ACL Information	Obtains the ACL information of a specified bucket.
Configuring Logging for a Bucket	Enables or disables the log management function of a bucket. When this function is enabled, a log record is generated for each operation on a bucket. Multiple log records are packed into a log file, which will be saved in a specified location.
Obtaining a Bucket Logging Configuration	Obtains the logging configuration of the current bucket.
Configuring Bucket Lifecycle Rules	Configures rules to automatically delete or migrate objects in a bucket.
Obtaining Bucket Lifecycle Configuration	Obtains the lifecycle rules configured for a specified bucket.
Deleting Lifecycle Rules	Deletes the lifecycle configuration of a bucket.
Configuring Versioning for a Bucket	Enables or disables versioning for a bucket. When this function is enabled, objects of different versions can be retrieved and restored, and data can be quickly restored in case of accidental operations or application faults.
Obtaining Bucket Versioning Status	Obtains the versioning status of a specified bucket.
Configuring Event Notification for a Bucket	Configures the event notification for a bucket to ensure that the bucket owner is notified about events occur on the bucket in a secure and timely manner.
Obtaining the Event Notification Configuration of a Bucket	Obtains the notification configuration of a bucket.
Configuring Storage Class for a Bucket	Creates or updates the default storage class configuration of a bucket.
Obtaining Bucket Storage Class Information	Obtains the default storage class configuration of a bucket.
Configuring Tags for a Bucket	Adds a tag to an existing bucket. After tags are added to a bucket, all charging data records (CDRs) generated by the requests for this bucket will have the same tags. Thus, CDR reports can be categorized for detailed cost analysis.
Obtaining Bucket Tags	Obtains the tags of a specified bucket.
Deleting Tags	Deletes the tags of a specified bucket.
Configuring Bucket Storage Quota	Sets the bucket space quota to limit the maximum storage capacity of the bucket.
Querying Bucket Storage Quota	Obtains the bucket space quota.
Querying Information About Used Space in a Bucket	Obtains the number of objects in a bucket and the space occupied by the objects.
Configuring a Custom Domain Name for a Bucket	Configures a custom domain name for a bucket. Once a user-defined domain name is successfully configured, the bucket can be accessed through the user-defined domain name.
Obtaining the Custom Domain Name of a Bucket	Queries the custom domain name of a bucket.
Deleting the Custom Domain Name of a Bucket	Deletes the custom domain name of a bucket.
Configuring Bucket Encryption	Creates or updates the default server-side encryption configuration for a bucket. After encryption is enabled for a bucket, objects uploaded to the bucket are encrypted with the encryption configuration the bucket.
Obtaining Bucket Encryption Configuration	Queries the default server-side encryption configuration of a bucket.
Deleting the Encryption Configuration of a Bucket	Deletes the default server-side encryption configuration of a bucket.

API Operations for Static Website Hosting

Table 3 API Operations for Static Website Hosting

Operation	Description
Configuring Static Website Hosting for a Bucket	Creates or updates the website hosting configuration of a bucket. OBS allows you to store static web page resources such as HTML web pages, flash files, videos, and audios in a bucket. When a client accesses these resources from the website endpoint of the bucket, the browser can directly resolve and present the resources to the client.
Obtaining the Static Website Hosting Configuration of a Bucket	Obtains the website hosting configuration of a bucket.
Deleting the Static Website Hosting Configuration of a Bucket	Deletes the website hosting configuration of a bucket.
Configuring Bucket CORS	Configures the cross-origin resource sharing (CORS) configuration of a bucket. OBS allows static web page resources to be stored in buckets. The buckets can be used as website resources. A website hosted by OBS can respond to cross-domain requests from another website only after the CORS rule is configured.
Obtaining the CORS Configuration of a Bucket	Obtains the CORS configuration of a bucket.
Deleting the CORS Configuration of a Bucket	Deletes the CORS configuration of a bucket.
OPTIONS Bucket	Checks whether the client has the permission to perform operations on the server. It is usually performed before the cross-domain access.
OPTIONS Object	Checks whether the client has the permission to perform operations on the server. It is usually performed before the cross-domain access.

API Operations on Objects

Table 4 API operations on objects

Operation	Description
Uploading Objects - PUT	Uploads simple objects to a specified bucket.
Uploading Objects - POST	Uploads objects to a specified bucket based on tables.
Copying Objects	Creates a copy for an existing object in OBS.
Downloading Objects	Downloads objects.
Querying Object Metadata	Obtains the object metadata. Information such as object expiration time, version number, and CORS configuration is the object metadata.
Deleting an Object	Deletes a specified object. You can also carry the versionId field to delete the specified object version.
Deleting Objects	Deletes a batch of objects from a bucket permanently. Objects deleted in this way cannot be recovered.
Restoring Cold Objects	Restores Cold objects. These objects must be restored before they can be downloaded.
Configuring an Object ACL	Configures the ACL of a specified object. You can control the read and write permissions of objects through ACL settings.
Obtaining Object ACL Configuration	Obtains the ACL configuration of a specified object.

API Operations for Multipart Tasks

Table 5 API operations for multipart tasks

Operation	Description
Listing Initialized Multipart Tasks in a Bucket	Queries all the multipart upload tasks that have not been merged or canceled in a bucket.
Initializing a Multipart Task	Initiates a multipart upload task, and obtains the globally unique multipart upload task ID for subsequent operations, such as uploading, merging, and listing parts.
Multipart Upload	Uploads parts for a specific multipart task.
Uploading a Part of an Object - Copy	Copies an object or a part of the object as a part of a multipart task.
Listing Uploaded Parts of an Object	Queries information about all parts of a multipart task.
Merging Parts into a Complete Object	Merges the specified parts into a complete object.
Canceling a Multipart Upload Task	Cancels a multipart upload task.