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Runs Go on OpenShift using downloadable cartridge support.

Once the app is created, you'll have a ".godir" file in the root of your repo. The single line is to tell the cartridge what the package of your Go code is. A typical .godir file might contain:

github.com/smarterclayton/goexample

which would tell OpenShift to place all of the files in the root of the Git repository inside of the github.com/smarterclayton/goexample package prior to compilation.

When you push code to the repo, the cart will compile your package into $OPENSHIFT_REPO_DIR/bin/, with the last segment of the .godir being the name of the executable. For the above .godir, your executable will be:

$OPENSHIFT_REPO_DIR/bin/goexample

If you want to serve web requests (vs. running in the background), you'll need to listen on the ip address and port that OpenShift allocates - those are available as HOST and PORT in the environment.

This default "web.go" file is a simple "hello, world" web service.

Any log output will be generated to $OPENSHIFT_GO_LOG_DIR on your OpenShift gear

When you push code to your repo, a Git postreceive hook runs and invokes a compile script. This attempts to download the Go compiler environment for you into $OPENSHIFT_GO_DIR/cache. Once the environment is setup, the cart runs

go get -tags openshift ./...

on a working copy of your source. The main file that you run will have access to two environment variables, $HOST and $PORT, which contain the internal address you must listen on to receive HTTP requests to your application.

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