Bash script to automate the Git Flow tag/release process

release.sh

#!/bin/bash

# current Git branch
branch=$(git symbolic-ref HEAD | sed -e 's,.*/\(.*\),\1,')

# v1.0.0, v1.5.2, etc.
versionLabel=v$1

# establish branch and tag name variables
devBranch=develop
masterBranch=master
releaseBranch=release-$versionLabel
 
# create the release branch from the -develop branch
git checkout -b $releaseBranch $devBranch

# store commits in one line with "\r\n" as line break, this shall be literal
# and will be interpreted by Jira later.
commits=`git --no-pager log --pretty=format:'%aN - Commit %h - %f' master...HEAD| sed ':a;N;$!ba;s/\n/\\\\r\\\\n/g'`
 
# file in which to update version number
versionFile="version.txt"
 
# find version number assignment ("= v1.5.5" for example)
# and replace it with newly specified version number
sed -i.backup -E "s/\= v[0-9.]+/\= $versionLabel/" $versionFile $versionFile
 
# remove backup file created by sed command
rm $versionFile.backup
 
# commit version number increment
git commit -am "Incrementing version number to $versionLabel"
 
# merge release branch with the new version number into master
git checkout $masterBranch
git merge --no-ff $releaseBranch
 
# create tag for new version from -master
git tag $versionLabel
 
# merge release branch with the new version number back into develop
git checkout $devBranch
#git merge --no-ff $releaseBranch
# Merge Master branch with new version number back into develop
git merge $masterBranch 

# generate archives
git clone . rel 
cd rel 
tar cfvz ../releases/checklist-${versionLabel}.tar.gz *
cd -
rm -rf rel
# update Jira issue with new release and comment
# read password and username from jira options.ini
while IFS='= ' read var val
do
	if [[ $var == \[*] ]]
	then
		section=$var
	elif [[ $val ]]
	then
		declare "$var$section=$val"
	fi
done < ./jira-options.ini

comment="{\"body\": \"{color:red}Release ${versionLabel}{color}\r\n${commits}\"}"
#attach tarball to Jira Ticket
curl -D- -u $username$SESSION:$password$SESSION -X POST -H "X-Atlassian-Token: nocheck" -F "file=@./releases/checklist-${versionLabel}.tar.gz" http://<host.jira>/rest/api/2/issue/<issueKey>/attachments
#Comment Jira Ticket with git log information and release number
curl -D- -u $username$SESSION:$password$SESSION -X POST -H "Content-Type: application/json" --data "$comment" http://<host.jira>/rest/api/2/issue/<issueKey>/comment

# remove release branch
git branch -d $releaseBranch