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Development Guide

Building the development environment

You need a working Go environment (1.16 or newer).

$ git clone git://github.com/osrg/gobgp
$ cd gobgp && go mod download

Now ready to modify the code and build two binaries, cmd/gobgp and cmd/gobgpd.

Testing

Before sending pull request, please make sure that your changes have passed both unit and integration tests. Check out the tests triggered by a pull request. If you need to debug the integration tests, it's a good idea to run them locally.

Changing the gRPC API

If you change the gRPC API, generate api/*.pb.go in the following way:

$ ./tools/grpc/genproto.sh

In order for the script to run, you'll need protoc (version 3.19.1) in your PATH.

Releases

GoBGP releases are time-based. Minor releases will occur every month (Semantic Versioning). Major releases occur only when absolutely necessary.

Versioning

GoBGP has a internal module for version information. internal/pkg/version/version.go defines the following variables

MAJOR MINOR PATCH these constants are for the Semantic Versioning scheme. These will be updated upon release by maintainer.

There is also two more variables that are ment to be changed by ldflags;

TAG is supposed to be used to denote which branch the build is based upon. SHA is supposed to be used to inform about which git sha sum the build is based on.

Examples

A normal release version of GoBGP Version 2.5.0 should should have;

const MAJOR uint = 2
const MINOR uint = 5
const PATCH uint = 0

If you have a non-standard release and want to have more build information there is some flags to be used. COMMIT, IDENTIFIER and METADATA.

go build -ldflags \
	"-X github.com/osrg/gobgp/v3/internal/pkg/version.COMMIT=`git rev-parse --short HEAD` \
	 -X github.com/osrg/gobgp/v3/internal/pkg/version.METADATA="date.`date "+%Y%m%d"`" \
	 -X github.com/osrg/gobgp/v3/internal/pkg/version.IDENTIFIER=alpha"

This will produce a version number of

3.0.0-alpaha+commit.XXXYYYZZ.date.20211209

Layout

The GoBGP project adopts Standard Go Project Layout.