The Cloud Storage XML API supports several standard HTTP request methods. Each method can use numerous request headers and response headers. The XML API documentation describes all of the supported HTTP methods as well as the most frequently used headers for each method.
Some methods are used to get or put data or get or put metadata. For example, you can use one PUT Bucket request to create a bucket followed by a second PUT Bucket request to configure logging for the bucket.
The following list shows which XML API method you use to accomplish bucket and object tasks.
- GET Service
- List Buckets in the project
- DELETE Bucket
- Delete a Bucket
- GET Bucket
- HEAD Bucket
- checks bucket existence
- PUT Bucket
- DELETE object
- Delete an Object
- GET Object
- HEAD Object
- Gets Object Metadata
- POST Object
- Upload an Object with a Form
- PUT Object
Conventions used in the XML API documentation:
Authorizationheader is represented as
<authentication string>. If you are using the XML API to migrate from another storage provider, then the
Authorizationhas the format discussed in Authentication in a Simple Migration Scenario. Otherwise, the
Authorizationheader has the format discussed in OAuth 2.0 Authentication.
If you do not provide authorization information when required to perform a request, the Google Cloud Storage issues a 401 unauthorized error. For more information, see Status Codes.
Hostheader used in the XML API documentation is of the form:
Host: BUCKET-NAME.storage.googleapis.comwhere the bucket name is specified as part of the hostname. In all operations except GET service, you can also specify the bucket as part of the URL path. For more information, see Request URIs.