Snippet of Job template that I use to create jobs for each branch of projects that have been active in the past 14 days. Basically adds to a folder of Jenkins generated Job Builder YAML that gets updated on scm change. Hacky but it's a start.

jenkins-job-branches

#!/bin/bash

#This script is a magical script to generate jobs for each active branch of a git repo.
#Add some randomness to give bitbucket / git a break
sleep $(( ( RANDOM % 10 )  + 10 ))

cd $WORKSPACE
daysToKeep=14

#Jenkins generated configs go in here...
[ -d jenkins ] || mkdir jenkins

echo -n "#File generated by Jenkins. Any changes will be destroyed!" > ./jenkins/{name}-branches.yaml
mkdir ./TMP
git clone {giturl} ./TMP
cd TMP
for branch in $( git branch -r | grep -v HEAD )
do
  active=$(git rev-list -n1 --since="14 days ago" $branch)

  #Master and develop branch should not be built by feature discovery job
  echo $branch | egrep -q "master|develop|support\/"
  if [ $? -eq 0 ]; then
    active=1
  fi

  #Output YAML for any branch where the active variable is not null
  if [ ! -z $active ]
  then
    gitbranch=$(echo $(echo $branch | sed 's|origin/||g'))
    jobSuffix=$(echo $(echo $branch | sed 's|origin/||g' | sed 's|/|-|g'))

    #Magic for branch merging stuff
    gitmerge={gitmerge}

    echo $branch | egrep -q "support\/"
    if [ $? -eq 0 ]; then
      gitmerge="$gitbranch"
    fi

    echo $branch | egrep -q "master|develop|release|uat"
    if [ $? -eq 0 ]; then
      gitmerge='master'
    fi

    echo ""                                       >> ../jenkins/{name}-branches.yaml
    echo "- project:"                             >> ../jenkins/{name}-branches.yaml

    #Handle branches named the same but in a different case - hack, hack, hack...
    #But yes, we seem to enjoy creating branches like ST-xxx and st-xxx
    grep -q -i "{name}-$jobSuffix'$" ../jenkins/{name}-branches.yaml
    if [ $? -eq 0 ]; then
      echo "    name: '{name}-$jobSuffix-1'"      >> ../jenkins/{name}-branches.yaml
    else
      echo "    name: '{name}-$jobSuffix'"        >> ../jenkins/{name}-branches.yaml
    fi

    echo "    giturl: '{giturl}'"                 >> ../jenkins/{name}-branches.yaml
    echo "    gitbranch: '$gitbranch'"               >> ../jenkins/{name}-branches.yaml
    echo "    gitmerge: '$gitmerge'"              >> ../jenkins/{name}-branches.yaml
    echo "    jobtype: '{jobtype}'"               >> ../jenkins/{name}-branches.yaml
    echo "    jobs:"                              >> ../jenkins/{name}-branches.yaml
    echo "      - {jobtype}-jobs"                 >> ../jenkins/{name}-branches.yaml
  fi
done

cd $WORKSPACE
rm -rf TMP