explained.md

Git push deploy

Requires installed gitolite in /home/git and following directory structure

/var
    /www
        /apps
        /hosts
        /libs
        /pre-deploy

/var/www/apps

Contains applications, each one in separated folder named by it's git repository

/var/www/hosts

when created folder in here (for example kdyby.l), nginx will try to direct all the trafic from kdyby.l and *.kdyby.l to /var/www/hosts/kdyby.l/index.php.

By the rule, only symlinks are in this directory, targeting folders from projects in /var/www/apps

/var/www/libs

Contains libraries, that are automatically deployed to directories %git-repo-name%/%refname%.

So if I push to kdyby-framework to branch master, directory /var/www/libs/kdyby-framework/master will be containing latest version of master. Works the same way for tags.

When pushed as $ git push origin :branch, the branch will be deleted as usual and the directory containing deleted branch (or tag) will be deleted too.

/var/www/pre-deploy

Is used for deploying to apps

Deployment process

• Bare repository is git-archive'd to corresponding directory in pre-deploy.
• Script will build filters for rsync, using existing .gitignore files in project.
• If this isn't the first deploy, and there is file app/console in the project, it will be called as app/console deploy:begin (yes it's symfony console in Kdyby sandbox based project)
• Directories /var/www/pre-deploy/project and /var/www/apps/project will be rsynched using defined filters
• Deploy script will fix permissions
• If there is file app/console in the project, it will be called as app/console deploy:finalize
• Directory /var/www/pre-deploy will be cleaned up

post-receive.app-deploy.sh

#!/bin/bash
#
# The "post-receive" script is run after receive-pack has accepted a pack
# and the repository has been updated.  It is passed arguments in through
# stdin in the form
#  <oldrev> <newrev> <refname>


# arguments
read oldrev newrev refname


# dirs
SOURCE_DIR="$GL_REPO_BASE_ABS/$GL_REPO.git"
PRE_DEPLOY_DIR="/var/www/pre-deploy/$GL_REPO"
APP_DIR="/var/www/apps/$GL_REPO"


# fix_permissions [dir]
fix_permissions () {
	find $1 -type d -exec chmod -f 770 {} \;
	find $1 -type f -exec chmod -f 660 {} \;
	chown -f -R git:www-data $1
}


# export_ref [ref] [source] [target]
copy_ref () {
	unset GIT_DIR
	echo "Preparing directory $3"
	rm -rf $3
	mkdir -p $3
	echo "Copying $1 to $3"
	cd $2 && git archive $1 | (cd $3 && tar xf -)
}


# file=$(gitignore [source])
gitignore () {
	TMP="/tmp/$(basename $0).$$.tmp"
	for file in `find "$1/" -name .gitignore -type f`; do
		echo "$(cat $file)" | sed -e '/^#/d' | sed -e 's/\s*#.*$//g' | while read -r line; do
			if [ -z "$line" ]; then
				continue
			fi

			if [ "${line:0:1}" == "!" ]; then
				echo "+ $(dirname $file |sed "s@$1@@g" |sed "s@$1\/@@g")/${line:1}"
			else
				echo "- $(dirname $file |sed "s@$1@@g" |sed "s@$1\/@@g")/$line"
			fi
		done
	done > $TMP
	echo $TMP
}


# deploy [source] [target]
deploy () {
	if [ -d "$2/app/console" ]; then
		echo "Notifying application about deploy"
		. $2/app/console deploy:begin
	fi

	echo "Synchronizing changes to $2"
	rules=$(gitignore $1)
	rsync --exclude='.git*' --filter="merge $rules" \
		-r -c --no-implied-dirs --size-only \
		--delete-after $1/ $2/  2>/dev/null
	fix_permissions $2/
	rm $rules; rm -rf $1/

	if [ -d "$2/app/console" ]; then
		echo "Requesting application to finish deploy"
		. $2/app/console deploy:finalize
	fi
}


# decide whether and what to deploy or delete
case $refname in
	refs/heads/* )
		BRANCH="${refname:11}"

		# choose target
		case $BRANCH in
			devel )
				echo "Executing deploy to $BRANCH of application $GL_REPO"
				copy_ref $BRANCH $SOURCE_DIR $PRE_DEPLOY_DIR
				deploy $PRE_DEPLOY_DIR $APP_DIR
				echo "Deploy finished"
			;;
			* ) 
			;;
		esac

	;;
	* ) 
	;;
esac

exit 0

post-receive.library-deploy.sh

#!/bin/bash
#
# The "post-receive" script is run after receive-pack has accepted a pack
# and the repository has been updated.  It is passed arguments in through
# stdin in the form
#  <oldrev> <newrev> <refname>


# arguments
read oldrev newrev refname


# dirs
SOURCE_DIR="$GL_REPO_BASE_ABS/$GL_REPO.git"
TARGET_DIR="/var/www/libs/$GL_REPO"


# fix_permissions [dir]
fix_permissions () {
	find $1 -type d -exec chmod 750 {} \;
	find $1 -type f -exec chmod 640 {} \;
	chown -R git:www-data $1
}


# export_ref [ref] [source] [target]
copy_ref () {
	unset GIT_DIR
	echo "Deleting directory $3"
	rm -rf $3
	mkdir -p $3
	echo "Copying $1 to $3"
	cd $2 && git archive $1 | (cd $3 && tar xf -)
}


# decide whether and what to deploy or delete
if [ "$newrev" = "0000000000000000000000000000000000000000" ]; then
	case $refname in
		refs/heads/* )
			BRANCH="${refname:11}"
			echo "Removing published branch $BRANCH of library $GL_REPO"
			rm -rf $TARGET_DIR/$BRANCH/
		;;
		refs/tags/* )
			TAG="${refname:10}"
			echo "Removing published tag $TAG of library $GL_REPO"
			rm -rf $TARGET_DIR/$TAG/
		;;
		* ) 
		;;
	esac
	find $TARGET_DIR/ -type d -empty -delete

else
	case $refname in
		refs/heads/* )
			BRANCH="${refname:11}"
			TARGET="$TARGET_DIR/$BRANCH/"
			echo "Executing deploy of library $GL_REPO, brach $BRANCH"
			copy_ref $BRANCH $SOURCE_DIR $TARGET
		;;
		refs/tags/* )
			TAG="${refname:10}"
			TARGET="$TARGET_DIR/$TAG/"
			echo "Executing deploy of library $GL_REPO, tag $TAG"
			copy_ref $TAG $SOURCE_DIR $TARGET
		;;
		* ) 
		;;
	esac
	fix_permissions $TARGET_DIR
fi

exit 0