deploy.sh

#!/bin/bash
# Deploy script for applications based on composer.


# Store where this script is stored, no matter where you invoke it from:
SCRIPTPATH="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
# and load the configuration:
source $SCRIPTPATH/deploy.cfg

TODAY=$(date "+%Y-%b-%d")
ORIGINAL_PATH=$PWD
DEPLOY_LOG="$DEPLOY_LOGS_DIR/$TODAY.log"

# Create all dirs
APP_DIR_SYMLINK_CONTAINER=$(dirname "$APP_DIR_SYMLINK")
if [ ! -d $APP_DIR_SYMLINK_CONTAINER ]; then
	mkdir -p "$APP_DIR_SYMLINK_CONTAINER"
fi
mkdir -p "$RELEASES_DIR"
mkdir -p "$RELEASES_SKELETON_DIR"
mkdir -p "$DEPLOY_LOGS_DIR"

echo "Deploy started on $TODAY..." | tee -a $DEPLOY_LOG	
echo "Checking requisites..." | tee -a $DEPLOY_LOG	
# REQUISITES CHECKING
# -------------------
command -v $DEPENDENCY_BIN >/dev/null 2>&1 || { echo >&2 "Command '$DEPENDENCY_BIN' is not installed. Failed miserably :_(" | tee -a $DEPLOY_LOG; exit 1; }

# First-time only. Clone the whole thing and composer update.
if [ ! -d $RELEASES_SKELETON_DIR/.git ]; then
	echo "Cloning the skeleton dir..." | tee -a $DEPLOY_LOG	
	git clone $GIT_REPO $RELEASES_SKELETON_DIR
	cd $RELEASES_SKELETON_DIR
	$DEPENDENCY_BIN install	
	ln -s $RELEASES_SKELETON_DIR $APP_DIR_SYMLINK
fi

# DEPLOYMENT START
# ----------------
# CURRENT APP STATUS
cd $APP_DIR_SYMLINK
APP_BRANCH=$DEFAULT_DEPLOY_BRANCH

# INTERACTIVE SHELL
echo "Deploy data. Press ENTER to accept default values."
echo "Which Branch? <$APP_BRANCH>:"
read BRANCH
if [ "$BRANCH" == "" ] ; then
	BRANCH=$APP_BRANCH
fi
echo "Retrieving latest SHA from remote repository..." | tee -a $DEPLOY_LOG	
APP_BASE_DIR_REMOTE_REV=`git ls-remote origin $BRANCH | sed 's/\([0-9a-f]\{10\}\)\(.*\)/\1/g' | head -n 1`

if [ "$APP_BASE_DIR_REMOTE_REV" == "" ] ; then
		echo "Failed retrieving remote content for branch '$BRANCH'" | tee -a $DEPLOY_LOG
		exit 1
fi
echo "Target <$APP_BASE_DIR_REMOTE_REV>?:"
read REVISION
if [ "$REVISION" == "" ] ; then
	REVISION=$APP_BASE_DIR_REMOTE_REV
fi

# Current revision:
APP_BASE_DIR_LOCAL_REV=`git rev-parse --verify HEAD | sed 's/\([0-9a-f]\{10\}\)\(.*\)/\1/g'`

if [ "$REVISION" == "$APP_BASE_DIR_LOCAL_REV" ] ; then
	echo "Already at requested revision $APP_BASE_DIR_LOCAL_REV, nothing to do." | tee -a $DEPLOY_LOG
	exit 1
fi

RELEASE="$RELEASES_DIR/$REVISION"

echo "********************SUMMARY********************" &&
echo -e "From revision:\t$APP_BASE_DIR_LOCAL_REV" &&
echo -e "To revision:\t$REVISION"  &&
echo "BRANCH: $BRANCH" &&
echo "Owner: $AUTHOR" &&
echo "************************************************" | tee -a $DEPLOY_LOG

# If release doesn't exist yet, prepare it:
if [ ! -d $RELEASE ] ; then
	echo "-- Preparing release..." | tee -a $DEPLOY_LOG	
	echo "-- Cleaning skeleton..." | tee -a $DEPLOY_LOG	
	cd $RELEASES_SKELETON_DIR 2>&1 | tee -a $DEPLOY_LOG
	# Skeleton should be always clean, but anyway let's assure.
	git reset --hard 2>&1 | tee -a $DEPLOY_LOG
	git checkout master 2>&1 | tee -a $DEPLOY_LOG
	echo "-- Pulling remote changes..." | tee -a $DEPLOY_LOG	
	git pull 2>&1 | tee -a $DEPLOY_LOG
	echo "-- Checking out $BRANCH'..." | tee -a $DEPLOY_LOG	
	git checkout $BRANCH 2>&1 | tee -a $DEPLOY_LOG
	echo "-- Selecting $REVISION'..." | tee -a $DEPLOY_LOG	
	git checkout $REVISION 2>&1 | tee -a $DEPLOY_LOG
	echo "-- Installing dependencies with '$DEPENDENCY_BIN $DEPENDENCY_BIN_ARGS'..." | tee -a $DEPLOY_LOG	
	$DEPENDENCY_BIN $DEPENDENCY_BIN_ARGS 2>&1 | tee -a $DEPLOY_LOG
	

	echo "-- Creating release folder..." | tee -a $DEPLOY_LOG	
	cp -R $RELEASES_SKELETON_DIR $RELEASE
fi

# Deploy it
echo "-- Ready to deploy $RELEASE..." | tee -a $DEPLOY_LOG
echo "If anything failed it's time to abort now (Ctrl+C)"
read -p "Continue? [y/N]: " CONTINUE
tput cuu1
if [ "$CONTINUE" != "y" ] ; then
	echo "DEPLOYMENT ABORTED ON USER REQUEST" | tee -a $DEPLOY_LOG
	exit 1
fi

rm $APP_DIR_SYMLINK && ln -s $RELEASE $APP_DIR_SYMLINK

echo "-- Executing post-deploy scripts..." | tee -a $DEPLOY_LOG	
# Execute post-deployment actions
source $SCRIPTPATH/post-deploy.sh | tee -a $DEPLOY_LOG

echo "-- Log file in $DEPLOY_LOG"	
cd $ORIGINAL_PATH
exit 0