Cosmos's fork of gogo/protobuf.
This code generation is used to achieve:
- fast marshalling and unmarshalling
- more canonical Go structures
- goprotobuf compatibility
- less typing by optionally generating extra helper code
- peace of mind by optionally generating test and benchmark code
- other serialization formats
More information in the original readme.
There are several ways to use gogoprotobuf, but for all you need to install go and protoc. After that you can choose:
- Speed
- More Speed and more generated code
- Most Speed and most customization
To install it, you must first have Go (at least version 1.6.3 or 1.9 if you are using gRPC) installed (see http://golang.org/doc/install). Latest patch versions of 1.12 and 1.15 are continuously tested.
Next, install the standard protocol buffer implementation from https://github.com/google/protobuf. Most versions from 2.3.1 should not give any problems, but 2.6.1, 3.0.2 and 3.14.0 are continuously tested.
Install the protoc-gen-gofast binary
go get github.com/cosmos/gogoproto/protoc-gen-gofast
Use it to generate faster marshaling and unmarshaling go code for your protocol buffers.
protoc --gofast_out=. myproto.proto
This does not allow you to use any of the other gogoprotobuf extensions.
Fields without pointers cause less time in the garbage collector. More code generation results in more convenient methods.
Other binaries are also included:
protoc-gen-gogofast (same as gofast, but imports gogoprotobuf)
protoc-gen-gogofaster (same as gogofast, without XXX_unrecognized, less pointer fields)
protoc-gen-gogoslick (same as gogofaster, but with generated string, gostring and equal methods)
Installing any of these binaries is easy. Simply run:
go get github.com/cosmos/gogoproto/proto
go get github.com/cosmos/gogoproto/{binary}
go get github.com/cosmos/gogoproto/gogoproto
These binaries allow you to use gogoprotobuf extensions. You can also use your own binary.
To generate the code, you also need to set the include path properly.
protoc -I=. -I=$GOPATH/src -I=$GOPATH/src/github.com/cosmos/gogoproto/protobuf --{binary}_out=. myproto.proto
To use proto files from "google/protobuf" you need to add additional args to protoc.
protoc -I=. -I=$GOPATH/src -I=$GOPATH/src/github.com/cosmos/gogoproto/protobuf --{binary}_out=\
Mgoogle/protobuf/any.proto=github.com/cosmos/gogoproto/types,\
Mgoogle/protobuf/duration.proto=github.com/cosmos/gogoproto/types,\
Mgoogle/protobuf/struct.proto=github.com/cosmos/gogoproto/types,\
Mgoogle/protobuf/timestamp.proto=github.com/cosmos/gogoproto/types,\
Mgoogle/protobuf/wrappers.proto=github.com/cosmos/gogoproto/types:. \
myproto.proto
Note that in the protoc command, {binary} does not contain the initial prefix of "protoc-gen".
Customizing the fields of the messages to be the fields that you actually want to use removes the need to copy between the structs you use and structs you use to serialize. gogoprotobuf also offers more serialization formats and generation of tests and even more methods.
Please visit the extensions page for more documentation.
Install protoc-gen-gogo:
go get github.com/cosmos/gogoproto/proto
go get github.com/cosmos/gogoproto/jsonpb
go get github.com/cosmos/gogoproto/protoc-gen-gogo
go get github.com/cosmos/gogoproto/gogoproto
