[POC] Go code base for Contrail projects

This repository holds Go implementation for Contrail projects. The goal of this project is to realize Go-based implementation & etcd based such as Kubernetes in order to improve performance, scale and ease operation.

We are planning to add following sub components.

• API Server (Python-based VNC API Server equivalent)
• Sync (IF-MAP, RabbitMQ related code equivalent but depends on etcd)
• Agent (SchemaTransformer, Device Manager equivalent)
• Code generation tool (generateDS equivalent)

Currently, this project is POC stage so any external/internal API or design subject to change up to community discussion.

Development setup

Step1. Install Go, Docker and Docker Compose

• Go
• Docker
• Docker Compose

Step2. Go get Contrail

go get -u github.com/Juniper/contrail

Note that go get -u github.com/Juniper/contrail/cmd/contrailutil fails because we don't commit generated code.

Step3. Install dependencies

# move to repo
cd $HOME/go/src/github.com/Juniper/contrail
# make sure put GOBIN to path
export PATH=$PATH:$HOME/go/bin
# or if you defined GOPATH
# cd $GOPATH/src/github.com/Juniper/contrail
make deps

Step4. Generate source code

make generate

Step5. Install Contrail binaries

make install

Step6. Setup test environment

make testenv reset_db

Note that these commands use docker command and depending on your Docker configuration they may require root permissions. See: Docker Documentation

First run

• Run Contrail process

  contrail -c sample/contrail.yml run

  Note that you can overwrite configuration parameters using environment variable with prefix "CONTRAIL_"

  For example CONTRAIL_DATABASE_DEBUG is overwriting database.debug value.

  CONTRAIL_DATABASE_DEBUG=true contrail -c sample/contrail.yml run

  Individual processes can be enabled or disabled using the configuration parameters.

• Run CLI commands

  export CONTRAIL_CONFIG=sample/cli.yml
  
  # Show schema
  contrailcli schema virtual_network
  
  # Sync resources
  contrailcli sync sample/sample_resource.yml
  
  # List resources
  contrailcli list virtual_network --detail
  
  # Delete resources
  contrailcli delete sample/sample_resource.yml

  See: CLI Usage

Testing

Run all tests with coverage:

make test

API documentation

OpenAPI specification file is generated during every run of make generate and it is located in ./public/openapi.json.

You can also run API doc server on local machine using:

make apidoc

The doc will be available on localhost:5000.

How to contribute

• Follow Openstack review process
• Use Tungsten Fabric Gerrit
• Comply to Code review guidelines

Step1

Setup Gerrit account. Sign CLA.

Step2

Install git-review tool.

pip install git-review

Step3

Send review to Gerrit:

git review

Documentation

See: Documentation index