Class BucketVersioningConfiguration
- All Implemented Interfaces:
Serializable
A bucket's versioning configuration can be in one of three possible states:
By default, new buckets are in the
off
state. Once versioning is
enabled for a bucket the status can never be reverted to
off
.
In addition to enabling versioning, a bucket's versioning configuration can also enable Multi-Factor Authentication (MFA) Delete, which restricts the ability to permanently delete a version of an object. When MFA Delete is enabled, only requests from the bucket owner which include an MFA token generated by the hardware authentication device associated with the bucket owner's AWS account can permanently delete an object version. For more information on AWS Multi-Factor Authentication see http://aws.amazon.com/mfa/
The versioning configuration of a bucket has different implications for each operation performed on that bucket or for objects within that bucket. For instance, when versioning is enabled, a PutObject operation creates a unique object version-id for the object being uploaded. The PutObject API guarantees that, if versioning is enabled for a bucket at the time of the request, the new object can only be permanently deleted using the DeleteVersion operation. It can never be overwritten. Additionally, PutObject guarantees that, if versioning is enabled for a bucket the request, no other object will be overwritten by that request. Refer to the documentation sections for each API for information on how versioning status affects the semantics of that particular API.
S3 is eventually consistent. It may take time for the versioning status of a bucket to be propagated throughout the system.
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Field Summary
FieldsModifier and TypeFieldDescriptionstatic final String
S3 bucket versioning status indicating that versioning is enabled for a bucket.static final String
S3 bucket versioning status indicating that versioning is off for a bucket.static final String
S3 bucket versioning status indicating that versioning is suspended for a bucket. -
Constructor Summary
ConstructorsConstructorDescriptionCreates a new bucket versioning configuration object which defaults toOFF
status.BucketVersioningConfiguration
(String status) Creates a new bucket versioning configuration object with the specified status. -
Method Summary
Modifier and TypeMethodDescriptionReturns the current status of versioning for this bucket versioning configuration object, indicating if versioning is enabled or not for a bucket.Returns true if Multi-Factor Authentication (MFA) Delete is enabled for this bucket versioning configuration, false if it isn't enabled, and null if no information is available about the status of MFADelete.void
setMfaDeleteEnabled
(Boolean mfaDeleteEnabled) Sets the status of Multi-Factor Authentication (MFA) Delete for a bucket.void
Sets the desired status of versioning for this bucket versioning configuration object.withMfaDeleteEnabled
(Boolean mfaDeleteEnabled) Sets the status of Multi-Factor Authentication (MFA) Delete for a bucket, and returns this object so that additional method calls may be chained together.withStatus
(String status) Sets the desired status of versioning for this bucket versioning configuration object, and returns this object so that additional method calls may be chained together.
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Field Details
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OFF
S3 bucket versioning status indicating that versioning is off for a bucket. By default, all buckets start off with versioning off. Once you enable versioning for a bucket, you can never set the status back to "Off". You can only suspend versioning on a bucket once you've enabled.- See Also:
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SUSPENDED
S3 bucket versioning status indicating that versioning is suspended for a bucket. Use the "Suspended" status when you want to disable versioning on a bucket that has versioning enabled.- See Also:
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ENABLED
S3 bucket versioning status indicating that versioning is enabled for a bucket.- See Also:
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Constructor Details
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BucketVersioningConfiguration
public BucketVersioningConfiguration()Creates a new bucket versioning configuration object which defaults toOFF
status. -
BucketVersioningConfiguration
Creates a new bucket versioning configuration object with the specified status.Note that once versioning has been enabled for a bucket, its status can only be
suspended
and can never be set back tooff
.- Parameters:
status
- The desired bucket versioning status for the new configuration object.- See Also:
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Method Details
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getStatus
Returns the current status of versioning for this bucket versioning configuration object, indicating if versioning is enabled or not for a bucket.- Returns:
- The current status of versioning for this bucket versioning configuration.
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setStatus
Sets the desired status of versioning for this bucket versioning configuration object.Note that once versioning has been enabled for a bucket, its status can only be
suspended
and can never be set back tooff
.- Parameters:
status
- The desired status of versioning for this bucket versioning configuration.- See Also:
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withStatus
Sets the desired status of versioning for this bucket versioning configuration object, and returns this object so that additional method calls may be chained together.Note that once versioning has been enabled for a bucket, its status can only be
suspended
and can never be set back tooff
.- Parameters:
status
- The desired status of versioning for this bucket versioning configuration.- Returns:
- The updated S3BucketVersioningConfiguration object so that additional method calls may be chained together.
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isMfaDeleteEnabled
Returns true if Multi-Factor Authentication (MFA) Delete is enabled for this bucket versioning configuration, false if it isn't enabled, and null if no information is available about the status of MFADelete.When MFA Delete is enabled, object versions can only be permanently deleted when the bucket owner passes in, as part of a delete version request, an MFA token from the hardware token generator associated with their AWS account.
By default, MFA Delete is not enabled.
When enabling or disabling MFA Delete controls, you must also supply an MFA token from the hardware token generator.
- Returns:
- True if the Multi-Factor Authentication (MFA) Delete is enabled for this bucket versioning configuration, false if it isn't enabled, and null if no information is present on the status of MFA Delete.
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setMfaDeleteEnabled
Sets the status of Multi-Factor Authentication (MFA) Delete for a bucket. When MFA Delete is enabled, object versions can only be permanently deleted when the bucket owner passes in, as part of a delete version request, an MFA token from the hardware token generator associated with their AWS account.By default, MFA Delete is not enabled.
When enabling or disabling MFA Delete controls, you must also supply an MFA token from the hardware token generator as part of the request.
- Parameters:
mfaDeleteEnabled
- True if the Multi-Factor Authentication (MFA) Delete is being enabled enabled, false if it is being disabled.
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withMfaDeleteEnabled
Sets the status of Multi-Factor Authentication (MFA) Delete for a bucket, and returns this object so that additional method calls may be chained together. When MFA Delete is enabled, object versions can only be permanently deleted when the bucket owner passes in, as part of a delete version request, an MFA token from the hardware token generator associated with their AWS account.By default, MFA Delete is not enabled.
When enabling or disabling MFA Delete controls, you must also supply an MFA token from the hardware token generator as part of the request.
- Parameters:
mfaDeleteEnabled
- True if the Multi-Factor Authentication (MFA) Delete is being enabled enabled, false if it is being disabled.- Returns:
- The updated S3BucketVersioningConfiguration object so that additional method calls may be chained together.
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