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Go support for Google's protocol buffers
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Joe Tsai 90fe996bd1 internal/impl: derive descriptors for legacy enums and messages 
In order for the v2 rollout to be as seamless as possible, we need to support
the situation where a v2 message depends on some other generated v1 message that
may be stale and does not support the v2 API. In such a situation, there needs
to be some way to wrap a legacy message or enum in such a way that it satisfies
the v2 API.

This wrapping is comprised of two parts:
1) Deriving an enum or message descriptor
2) Providing an reflection implementation for messages

This CL addresses part 1 (while part 2 has already been partially implemented,
since the implementation applies to both v1 and v2).

To derive the enum and message descriptor we rely on a mixture of parsing the
raw descriptor proto and also introspection on the fields in the message.
Methods for obtaining the raw descriptor protos were added in February, 2016,
and so has not always been available. For that reason, we attempt to derive
as much information from the Go type as possible.

As part of this change, we modify prototype to be able to create multiple
standalone messages as a set. This is needed since cyclic dependencies is allowed
between messages within a single proto file.

Change-Id: I71aaf5f977faf9fba03c370b1ee17b3758ce60a6
Reviewed-on: https://go-review.googlesource.com/c/143539
Reviewed-by: Damien Neil <dneil@google.com>
2018-10-22 17:18:39 +00:00
cmd cmd/protoc-gen-go: re-escape default byte values 2018-10-22 17:14:19 +00:00
internal internal/impl: derive descriptors for legacy enums and messages 2018-10-22 17:18:39 +00:00
protogen protogen: move comment generation into protogen 2018-10-17 21:03:49 +00:00
reflect internal/impl: derive descriptors for legacy enums and messages 2018-10-22 17:18:39 +00:00
.gitignore cmd/protoc-gen-go-grpc: add gRPC code generator 2018-09-27 19:32:34 +00:00
.travis.yml test.bash: use repo-local cache 2018-09-06 19:58:40 +00:00
AUTHORS AUTHORS, CONTRIBUTORS, LICENSE, PATENTS: initial commit 2018-08-07 22:39:48 +00:00
CONTRIBUTING.md CONTRIBUTING.md: add pre-push hook instructions 2018-08-07 23:58:41 +00:00
CONTRIBUTORS AUTHORS, CONTRIBUTORS, LICENSE, PATENTS: initial commit 2018-08-07 22:39:48 +00:00
go.mod go.mod: rename google.golang.org/proto as github.com/golang/protobuf/v2 2018-09-24 16:11:50 +00:00
go.sum protogen: automatic handling of imports 2018-09-05 23:14:28 +00:00
LICENSE AUTHORS, CONTRIBUTORS, LICENSE, PATENTS: initial commit 2018-08-07 22:39:48 +00:00
PATENTS AUTHORS, CONTRIBUTORS, LICENSE, PATENTS: initial commit 2018-08-07 22:39:48 +00:00
README.md CONTRIBUTING.md: initial commit 2018-08-01 20:39:06 +00:00
regenerate.bash cmd/protoc-gen-go-grpc: add gRPC code generator 2018-09-27 19:32:34 +00:00
test.bash test.bash: do not run golden tests by default 2018-10-16 16:49:18 +00:00

README.md

Next Generation Go Protocol Buffers

WARNING: This repository is in active development. There are no guarantees about API stability. Breaking changes will occur until a stable release is made and announced.

This repository is for the development of the next major Go implementation of protocol buffers. This library makes breaking API changes relative to the existing Go protobuf library. Of particular note, this API aims to make protobuf reflection a first-class feature of the API and implements the protobuf ecosystem in terms of reflection.

Design Documents

List of relevant design documents:

Contributing

We appreciate community contributions. See CONTRIBUTING.md.

Reporting Issues

Issues regarding the new API can be filed at github.com/golang/protobuf. Please use a APIv2: prefix in the title to make it clear that the issue is regarding the new API work.