v1.31.0

v1.31.0 Release

BigQuery

• feat(generator): add default tracing components and options (#7219)

Bigtable

• feat(bigtable): add Make(Data,Admin,InstanceAdmin)Client methods that take Options (#7226)

IAM

• feat(generator): add default tracing components and options (#7219)

Pub/Sub

• feat(pubsub): support Topic retention duration (#7196)

Storage

• fix: release CurlRequest handles on error (#7244)
• feat(storage): add additional examples (#7224)
• feat(storage): aggregate upload benchmark (#7190)
• fix(GCS+gRPC): quickstart build with Bazel+Windows (#7147)
• fix(storage): release handles for oauth2 refresh (#7136)
• fix(GCS+gRPC): return status on stream closure (#7128)
• feat(storage): make benchmark more robust on stalls (#7113)
• feat(GCS+gRPC): timeout downloads in benchmark (#7112)
• feat(GCS+gRPC): initial support for download timeouts (#7108)

Spanner

• feat(spanner): support for JSON as a column type (#7212)
• feat(spanner): tagging support (#7154)
• feat(spanner): send session-refresh request at low priority (#7140)
• fix(spanner): fix Client::OverlayQueryOptions() to merge correctly (#7118)

Common Libraries

BREAKING CHANGES:

• google::cloud::StatusOr<T> had an accessor that returned an lvalue
  reference to non-const Status, this allowed callers to modify the contained
  Status and break invariants of the StatusOr class. This function was
  removed. If your code previously relied on sor.status() = new_status you
  should change it to sor = new_status. (#7150)

OTHER CHANGES:

• feat(common): add GrpcChannelArgumentsNativeOption (#7194)
• feat(common): capture thread that creates log record (#7119)