Release script

releaser.sh

#! /bin/bash

# Release Manager

# Bumps version of project
# Tags the new version
# Produces Changelog

# Get Project Current Version
version=$(sed -n 's/.*"version": "\(.*\)",/\1/p' package.json)

# greeting banner
echo ""
echo "==========================="
echo " Welcome to Release Helper "
echo "==========================="
echo ""

# Bump Version Function
do_bump () {

	# abstract each part to the version and set to variable
	base_version=(`echo $version | tr '.' ' '`)
	major_v=${base_version[0]}
	minor_v=${base_version[1]}
	patch_v=${base_version[2]}

	echo "Current version: $version"

	# bump each part based on user input
	if [ "$1" != 0 ]; then
		major_v=$((major_v + $1))
	fi
	if [ "$2" != 0 ]; then
		minor_v=$((minor_v + $2))
	fi
	if [ "$3" != 0 ]; then
		patch_v=$((patch_v + $3))
	fi

	suggested_v="$major_v.$minor_v.$patch_v"

	read -p "Suggested version to bump to [$suggested_v]. Will this be ok? (y/n): " version_confirm
	case $version_confirm in
		[Yy]* ) start_release $suggested_v;;
		[Nn]* ) read -p "Ok, what version would you like to bump to?: " set_v; start_release set_v;;
		* ) echo "Bumping version to $suggested_v"; start_release $suggested_v;;
	esac
}

# Gather user input on how to bump the project
ask_bump () {
	echo "Until I get smart enough to calculate this for you, help me figure out how to bump this project."
	read -p "How many major changes have been made?: " major_chgs
	read -p "How many minor changes have been made?: " minor_chgs
	read -p "How many patches have been made?: " patch_chgs
	do_bump major_chgs minor_chgs patch_chgs
}

# Actually starting the release process
start_release () {

	echo "Doing release under version $1"

	lastdate=$(git show -s --format=%ad `git rev-list --tags --max-count=1`)
	today=$(date +"%m-%d-%Y")

	echo "Last Release was on $lastdate"
	echo "Producing Changelog starting from $lastdate"

	# start producing Changelog file starting with the heading
	echo "# Performance Manager Changelog for release v$1" > CHANGELOG.md
	echo "" >> CHANGELOG.md
	echo "## [$1](https://github.com/Demandbase/perfman/releases/tag/v$1) ($today)" >> CHANGELOG.md
	echo "" >> CHANGELOG.md

	# now we add in the commit history
	git log --no-merges --pretty=format:"%h %an, %ad, message: %s%n" --date=local --since="$lastdate" >> CHANGELOG.md
	
	git add -A
	git commit -m "Produced Changelog file for release"
	git push origin staging

	echo "Done making CHANGELOG.md. Starting release"
	
	git flow release start v$1

	echo "Bumping project version to v$1"
	grunt bump --setversion=$1

	echo "Adding and commiting all changes done during release process"
	git add -A
	git commit -m "Bumps project version to v$1"

	git flow release finish v$1

	git push --tags --force

	git push origin master

}

# Let user input which version to work from
set_version () {
	read -p "Ok, please input a semantic version you would like to work from. (e.g. 0.6.2): " version
	read -p "Your new version to work from is v$version. Is this correct? (y/n): " yn
	case $yn in
		[Yy]* ) ask_bump $version;;
		[Nn]* ) echo "Sorry something went wrong. Please try again.";;
		* ) echo "Sorry something went wrong. Please try again.";;
	esac
}

# Confirm project version
confirm_version () {
	read -p "Looks like Performance Manager is currently at version $1. Is this correct? (y/n): " yn
	case $yn in
		[Yy]* ) ask_bump $1;;
		[Nn]* ) set_version;;
		* ) echo "Something went wrong. Please try again.";;
	esac
}

# Confirm user ready
confirm_ready () {
	read -p "Are you ready to get started? (y/n): " yn
	case $yn in
		[Yy]* ) confirm_version $version;;
		[Nn]* ) echo "Ok, Cya next time!";;
		* ) read -p "Sorry, I didnt catch that. Please tell me if you are ready to
			* begin your release? (y/n): ";;
	esac
}

confirm_ready

Release script I wrote to help developers of a project I'm contributing to all release the same way. It helps to produce a consistent changelog and make sure they tag their work. It needs work but it is successfully being used today.