A generic git post-receive hook for auto-deploying applications when pushed to.

git-post-receive-deployment.sh

#!/bin/bash

#------------------------------------------------------------------------------#
# CONFIGURATION
# You will need the following variables set in the git repository to deploy from:

# git config --bool receive.denyCurrentBranch false
# git config --bool core.bare false
# git config --path core.worktree [DEPLOYMENT_DIR]

#------------------------------------------------------------------------------#

# Read standard input to work out the branch (or tag) we've just pushed
while read oldrev newrev refname
do
	DEPLOY_BRANCH=`echo $refname | cut -d/ -f3`
done

echo "Pushed branch $DEPLOY_BRANCH"

# Setup environment for git
unset GIT_DIR
DEPLOY_DIR=`git config --get core.worktree`

# Check required directories are present
if [ ! -d "$DEPLOY_DIR" ]; then
	echo "Could not locate deployment directory $DEPLOY_DIR"
	exit 1
fi

# move into working copy
cd $DEPLOY_DIR

# Check for local modifications, abort and notify if found
git diff --quiet
EXIT_CODE=$?
if [[ $EXIT_CODE -ne 0 ]]; then
	echo "Local changes to tracked files detected, aborting deployment. Files changed:"
	git diff --name-only
	exit 1
fi

# Run the deployment of the main repo
git checkout -f $DEPLOY_BRANCH

# Run the deployment for submodules
git submodule update --init --recursive --force