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2.6 KiB

File System based Bank implementation

https://blueprints.launchpad.net/karbor/+spec/s3-bank-plugin

Problem description

Currently we suppport Swift and File System as bank implementations. We should increase more bank plugin types so that users will have more choices to feet their needs in different scenarios.

S3 compatible storage is a valid choice, which is used by many individuals and companies in the public or private clouds. With S3 based implementation, it will store objects and object metadata on S3 compatible Storage.

Use Cases

As explained, deployers who want or will use S3 compatible storage in their cloud.

Proposed change

Objects would be stored under a object name with their ID having / be defined as a separator.

For example::

Object ID: /checkpoints/2fd14f87-46bd-43a9-8853-9e1a84ebee3d/index.json

The metadata files will be in a JSON format. The name and format of these files are same as the meatadata objects in the Swift bank.

For example::

/checkpoints/3a4d76e7-f8d8-4f2f-9c1d-107d88d7a815/ <- directory /checkpoints/3a4d76e7-f8d8-4f2f-9c1d-107d88d7a815/metadata <- md file /checkpoints/3a4d76e7-f8d8-4f2f-9c1d-107d88d7a815/status

Alternatives

Do nothing, this is not a mission critical feature.

Technical details

Related docs:

Amazon S3 REST API Introduction * http://docs.aws.amazon.com/AmazonS3/latest/API/Welcome.html

The python client module that could be used is botocore * https://github.com/boto/botocore

Data model impact

None.

REST API impact

None

Security impact

None

Notifications impact

None

Other end user impact

None

Performance Impact

This API might be fasterslower than Swift depending on use case.

Other deployer impact

None

Developer impact

None

Implementation

Assignee(s)

Primary assignee: Pengju Jiao <jiaopengju@cmss.chinamobile.com>

Work Items

  • Write Bank Plugin
  • Add documentation

Dependencies

None

Testing

Unit tests in Karbor.

Documentation Impact

New docs to explain how to use and configure the alternative Bank implementation.

References

None