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Dev Setup

PATH=.../s3cli/out:$PATH bin/run -P ubuntu -C path_to_config.json

Running locally

To start server locally:

gem install nats
nats-server

To subscribe:

nats-sub '>' -s nats://localhost:4222

To publish:

nats-pub agent.123-456-789 '{"method":"apply","arguments":[{"packages":[{"name":"package-name", "version":"package-version"}]}]}' -s nats://localhost:4222

Blobstores

The Go Agent ships with 5 default blobstores:

  • Local filesystem
  • S3
  • GCS (Google Cloud Storage)
  • DAV
  • Dummy (for testing)

You can, however, use custom blobstores by implementing a simple interface. For example, if you want to use a blobstore named "custom" you need to create an executable named bosh-blobstore-custom somewhere in PATH. This executable must conform to the following command line interface:

  • -c flag that specifies a config file path (this will be passed to every call to the executable)
  • must parse the config file in JSON format
  • must respond to get <blobID> <filename> by placing the file identified by the blobID into the filename specified
  • must respond to put <filename> <blobID> by storing the file at filename into the blobstore at the specified blobID

A full call might look like:

bosh-blobstore-custom -c /var/vcap/bosh/etc/blobstore-custom.json get 2340958ddfg /tmp/my-cool-file

Set up a workstation for development

Note: This guide assumes a few things:

  • You have gcc (or an equivalent)
  • You can install packages (brew, apt-get, or equivalent)

Get Golang and its dependencies (Mac example, replace with your package manager of choice):

  • brew update
  • brew install go
  • brew install git (Go needs git for the go get command)
  • brew install hg (Go needs mercurial for the go get command)

Clone and set up the BOSH Agent repository:

  • go get -d github.com/cloudfoundry/bosh-agent
    • Note that this will print an error message because it expects a single package; our repository consists of several packages. The error message is harmless—the repository will still be checked out.
  • cd $GOPATH/src/github.com/cloudfoundry/bosh-agent

From here on out we assume you're working in $GOPATH/src/github.com/cloudfoundry/bosh-agent

Install tools used by the BOSH Agent test suite:

  • bin/go get code.google.com/p/go.tools/cmd/vet
  • bin/go get github.com/golang/lint/golint

Updating dependencies

All dependencies:

dep ensure

An example for a single dependency:

dep ensure github.com/pivotal-golang/clock/fakeclock

See dep readme for more information.

Running tests

Each package in the agent has its own unit tests. You can run all unit tests with bin/test-unit.

Additionally, BOSH includes integration tests that use this agent. Run bin/test-bosh-integration to run those with your local agent changes. However, in order to run the BOSH integrations tests, you will need a copy of the BOSH repo, which this script will do in ./tmp. BOSH uses Ruby for its tests, so you will also need to have that available.

You can run all the tests by running bin/test.

There is a stand-alone BOSH Agent integration test to test config-drive using bosh-lite. This can be run locally via bin/test-integration --provider=virtualbox. The vagrant provider passed in can be changed to a provider of your choosing if you so desire.

Using IntelliJ with Go and the BOSH Agent

  • Install IntelliJ 15
  • Install the latest Google Go plugin for IntelliJ. You may want to grab the latest early access (EAP) build, rather than the last release.
  • (Optional) Download, Install & Select improved keybindings for IntelliJ:
    • git clone git@github.com:Pivotal-Boulder/IDE-Preferences.git
    • cd ~/Library/Preferences/IntelliJIdea13/keymaps
    • ln -sf ~/workspace/IDE-Preferences/IntelliJKeymap.xml
    • In IntelliJ: Preferences -> Keymap -> Pick 'Mac OS X 10.5+ Improved'
  • Clone bosh-agent into a clean go workspace (or use a bosh clone with bosh/go as the workspace root):
    • mkdir -p ~/workspace/bosh-agent-workspace/src/github.com/cloudfoundry
    • cd ~/workspace/bosh-agent-workspace/src/github.com/cloudfoundry
    • git clone https://github.com/cloudfoundry/bosh-agent
  • Open ~/workspace/bosh-agent-workspace as a new project in IntelliJ.
  • Set the Go SDK as the Project SDK:
    • Open the Project Structure window: File -> Project Structure
    • Select the Project tab in left sidebar
    • (Optional) Add a New Go SDK by selecting your go root.
    • Select Go SDK go1.3 under Project SDK
  • Setup module sources
    • Open the Project Structure window: File -> Project Structure
    • Select the Modules tab in left sidebar
    • Select your module in the middle sidebar
    • Select the Sources tab in the Module pane
    • Select ~/workspace/bosh-agent-workspace/src and add is as a source dir
  • Install & configure the Grep Console plugin
    • Install via Preferences -> Plugins
    • Select Preferences -> Grep COnsole -> Enable ANSI coloring to colorize Ginkgo test output
  • Re-index your project: File -> Invalidate Cache / Restart

You should now be able to 'go to declaration', auto-complete, and run tests from within IntelliJ.