blue-green-services.sh

#!/bin/bash -e

#DEPLOY_SERVERS=(vm273 vm274)
#APP_NAME=via-autobeheer-app-test
#DIST=dist/
#STATUS_CHECK_BASE=https://via-autobeheer-app-tst.firebaseio.com
#STATUS_CHECK_LOCATIONS=(/userData/status /token/status)
#SERVICES=(authentication-service userdata-service)

# .oOo.oOo.oOo.oOo.oOo.oOo.oOo.oOo.oOo.oOo.oOo.oOo.oOo.oOo.oOo. #

info () {
	echo -n -e "\033[34m\u272A\033[0m\033[32m\u272A\033[0m \e[1m$1 \e[0m"
}

error_exit () {
	echo -e "\e[31mError:\e[0m $1"
	exit 1
}

show_log () {
	deploy_server=$1
	servicename=$2

	# use pipe so exit code supressed when file is not accessible
	ssh tipdeployment@$deploy_server -i ~/.ssh/tipdeployment "sudo /bin/cat /var/log/upstart/$servicename.log | tail -n 70"
}

eval deploy_servers=$DEPLOY_SERVERS
eval services=$SERVICES
eval status_check_locations=$STATUS_CHECK_LOCATIONS
status_check_base=$STATUS_CHECK_BASE

stack="node"

if [ -n "${APP_NAME+1}" ]; then
	appname=$APP_NAME
else
	appname=$(node -e "console.log(require('./package.json').name.replace(/-/g, ''));")
fi

echo "$appname"

distfolder="$WORKSPACE/$DIST"
remotebasedir="/opt/"

figlet "$stack"

for deploy_server in "${deploy_servers[@]}"
do
	:
	echo -en '\n\n'

	#check ssh connection
	ssh tipdeployment@$deploy_server -i ~/.ssh/tipdeployment "exit" || error_exit "SSH connection to $deploy_server failed."

	for service in "${services[@]}"
	do
		:

		servicename="$appname-$service"

		echo $(info "Stop $servicename")
		ssh tipdeployment@$deploy_server -i ~/.ssh/tipdeployment "sudo initctl status $servicename"
		if ssh tipdeployment@$deploy_server -i ~/.ssh/tipdeployment "sudo initctl status $servicename" | grep -vq "running"; then
			echo "Already stopped"
		else
			ssh tipdeployment@$deploy_server -i ~/.ssh/tipdeployment "sudo initctl stop $servicename"
			sleep 4
		fi
	done

	echo $(info "Sync files to $deploy_server")
	rsync -avz \
		-e "ssh -i $HOME/.ssh/tipdeployment" "$distfolder" tipdeployment@$deploy_server:$remotebasedir$appname/ \
		--delete \
		--stats \
		--human-readable \
		--exclude=.git/ \
		--itemize-changes \

		#--exclude-from 'exclude-list.txt'

	counter=0
	for service in "${services[@]}"
	do
		:

		port=${ports[counter]}
		servicename="$appname-$service"
		status_check_location=${status_check_locations[counter]}
		monitor_url="$status_check_base$status_check_location/$deploy_server.json"

		echo $(info "Start $servicename ($port)")

		ssh tipdeployment@$deploy_server -i ~/.ssh/tipdeployment "sudo initctl start $servicename"

		sleep 4


		if ssh tipdeployment@$deploy_server -i ~/.ssh/tipdeployment "sudo initctl status $servicename" | grep -vq "running"; then
			show_log "$deploy_server" "$servicename"
			error_exit "Starting $servicename failed!"
		fi

		echo $(info "Waiting for $servicename to come online at $monitor_url...")
		timer=0

                expected='"online"'

		until [ $(curl -s "$monitor_url") == $expected ]; do
			echo -n "."
			sleep 1
			timer=$[timer + 1]
			if [ "$timer" -ge "60" ]; then
				echo
				show_log "$deploy_server" "$servicename"
				error_exit "Service $servicename does not respond on port $port!"
			fi
		done

		show_log "$deploy_server" "$servicename"

		counter=$[counter + 1]
	done

	echo
done

echo -e "\e[42mdone!\e[0m";