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BUILDING.md

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Build the development environment

To build Swarmkit, you must set up a Go development environment. How to Write Go Code contains full instructions. When setup correctly, you should have a GOROOT and GOPATH set in the environment.

After you set up the Go development environment, use go get to check out swarmkit:

go get -d github.com/docker/swarmkit

This command installs the source repository into the GOPATH.

It is not mandatory to use go get to checkout the SwarmKit project. However, for these instructions to work, you need to check out the project to the correct subdirectory of the GOPATH: $GOPATH/src/github.com/docker/swarmkit.

Repeatable Builds

For the full development experience, one should cd into $GOPATH/src/github.com/docker/swarmkit. From there, the regular go commands, such as go test, should work per package (please see Developing if they don't work).

Docker provides a Makefile as a convenience to support repeatable builds. make setup installs tools onto the GOPATH for use with developing SwarmKit:

make setup

Once these commands are available in the GOPATH, run make to get a full build:

$ make
🐳 fmt
🐳 bin/swarmd
🐳 bin/swarmctl
🐳 bin/swarm-bench
🐳 bin/protoc-gen-gogoswarm
🐳 binaries
🐳 vet
🐳 lint
🐳 build
github.com/docker/swarmkit
github.com/docker/swarmkit/vendor/github.com/davecgh/go-spew/spew
github.com/docker/swarmkit/vendor/github.com/pmezard/go-difflib/difflib
github.com/docker/swarmkit/cmd/protoc-gen-gogoswarm
github.com/docker/swarmkit/cmd/swarm-bench
github.com/docker/swarmkit/cmd/swarmctl
github.com/docker/swarmkit/vendor/github.com/stretchr/testify/assert
github.com/docker/swarmkit/ca/testutils
github.com/docker/swarmkit/cmd/swarmd
github.com/docker/swarmkit/vendor/github.com/pivotal-golang/clock/fakeclock
github.com/docker/swarmkit/vendor/github.com/stretchr/testify/require
github.com/docker/swarmkit/manager/state/raft/testutils
github.com/docker/swarmkit/manager/testcluster
github.com/docker/swarmkit/protobuf/plugin/deepcopy/test
github.com/docker/swarmkit/protobuf/plugin/raftproxy/test
🐳 test
?       github.com/docker/swarmkit      [no test files]
?       github.com/docker/swarmkit      [no test files]
ok      github.com/docker/swarmkit/agent        2.264s
ok      github.com/docker/swarmkit/agent/exec   1.055s
ok      github.com/docker/swarmkit/agent/exec/container 1.094s
?       github.com/docker/swarmkit/api  [no test files]
?       github.com/docker/swarmkit/api/duration [no test files]
?       github.com/docker/swarmkit/api/timestamp        [no test files]
ok      github.com/docker/swarmkit/ca   15.634s
...
ok      github.com/docker/swarmkit/protobuf/plugin/raftproxy/test       1.084s
ok      github.com/docker/swarmkit/protobuf/ptypes      1.025s
?       github.com/docker/swarmkit/version      [no test files]

The above provides a repeatable build using the contents of the vendored ./vendor directory. This includes formatting, vetting, linting, building, and testing. The binaries created will be available in ./bin.

Several make targets are provided for common tasks. Please see the Makefile for details.

Update vendored dependencies

To update dependency you need just change vendor.conf file and run vndr tool:

go get github.com/LK4D4/vndr
vndr

It's possible to update only one dependency:

vndr github.com/coreos/etcd v3.0.9

but it should be in sync with vendor.conf.

Also, you can update dependency from fork for testing:

vndr github.com/coreos/etcd <revision> https://github.com/LK4D4/etcd.git

Regenerating protobuf bindings

This requires that you have Protobuf 3.x or higher. Once that is installed the bindings can be regenerated with:

make setup
make generate

NB: As of version 3.0.0-7 the Debian protobuf-compiler package lacks a dependency on libprotobuf-dev which contains some standard proto definitions, be sure to install both packages. This is Debian bug #842158.