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Google Cloud Strorage

Documentation

This directory contains the implementation of the Google Cloud Storage C++ client.

Status

This library support Google Cloud Storage at the Alpha quality level.

Documentation

The reference guide, can be found online. The top-level page in the reference guide includes a quick start guide.

Release Notes

v0.3.x - TBD

v0.2.x - 2018-12

  • Use resumable uploads for large files in Client::UploadFile().
  • Implement support for the userIp optional query parameter.
  • BREAKING CHANGE Client::RewriteObject(), Client::CopyObject(), and Client::ComposeObject no longer require the ObjectMetadata argument. Instead use WithObjectMetadata(), which can be omitted if you do not need to set any metadata attributes in the new object.
  • When using OpenSSL-1.0.2 the client library needs to configure the locking callbacks for OpenSSL. However, the application may disable this behavior if the application developer is going to use their own locking callbacks.
  • When refreshing OAuth2 access tokens the client library uses the same retry and backoff policies as used for the request itself.
  • Applications can set object metadata attributes via the WithObjectMetadata optional argument to Client::InsertObjectMedia().
  • Applications can configure the library to only retry idempotent operations.
  • The client library can use Google Compute Engine credentials to access the service.

v0.1.x - 2018-11

  • Automatically compute MD5 hashes and CRC32C checksums when objects are uploaded and downloaded. Any hash or checksum mismatched results in an exception. Applications can MD5 hashes, CRC32C checksums or both on any request.
  • Parse Bucket lock and retention policy attributes in object and bucket metadata.
  • Add APIs to upload and download files with a single function call.
  • Improved the error messages generated when the credentials file is missing or has invalid contents.
  • Jason Zaman contributed improvements and fixes to support soversion numbers with CMake.

2018-09

  • The library implements all the APIs in the service, including:
    • Create, list, and delete buckets and objects.
    • Read and modify metadata attributes of buckets and objects, including patch semantics.
    • Compose multiple objects into a single object.
    • Rewrite objects to a different bucket or with with different encrytion keys.
    • Read object contents as a stream of data.
    • Create objects using a stream of data.
    • Create objects from a std::string.
    • Control Object lifecycle policies in buckets.
    • Control versioning in buckets.
    • Read, modify and test IAM policies in buckets.
    • Read, modify, list, and set ACLs for buckets and objects.
    • Control Pub/Sub configuration of a bucket.
    • Use pre-conditions for object and bucket operations.
    • Customer-Supplied Encryption keys.
    • Customer-Managed Encryption keys.
  • The library does not (yet) have a GitHub release, it is only available from the default branch on GitHub