install_jenkins_plugin.sh

#!/bin/bash

set -e

TMP=$(mktemp -d)

UPDATES_URL="http://updates.jenkins-ci.org/download/plugins/"

if [ $# -lt 2 ]; then
  echo "USAGE: $0 plugin-list-file destination-directory"
  exit 1
fi

plugin_list=$1
plugin_dir=$2

#file_owner=jenkins.jenkins

mkdir -p $plugin_dir

containsElement () {
  local e
  for e in "${@:2}"; do [[ "$e" == "$1" ]] && return 0; done
  return 1
}

latestVersion() {
  cat "$TMP/$1" 2>/dev/null || 
  curl -s https://updates.jenkins.io/download/plugins/${1}/ |
    grep /download/ | head -n1 |sed "s/.*href='//;s/'>.*//;s#.*${1}/##;s#/.*##" |
    tee "$TMP/$1"
}

installPlugin() {
  if [ "$2" == "latest" ]; then
    version=$(latestVersion "$1")
  else
    version=$2
  fi
  if [[ -e ${plugin_dir}/${1}.hpi || -e ${plugin_dir}/${1}.jpi || -e ${plugin_dir}/${1}-${version}.hpi ]]; then
    if [ "$2" == "1" ]; then
      echo "Some sh*t"
	  return 1
    fi
    echo "Skipped: $1 (already installed)"
    return 0
  else
    echo "Installing: $1-${version}"
    curl -L --silent --output ${plugin_dir}/${1}-${version}.hpi  ${UPDATES_URL}/${1}/${version}/${1}.hpi
    return 0
  fi
}

while IFS="|" read plugin version
do
    #escape comments
    if [[ $plugin =~ ^# ]]; then
       echo "here"
	   continue
    fi

    #install the plugin
    installPlugin $plugin $version
done < $plugin_list


changed=1
maxloops=100
pluginsProcesed=()

while [ "$changed"  == "1" ]; do
  if  [ $maxloops -lt 1 ] ; then
    echo "Max loop count reached - probably a bug in this script: $0"
    exit 1
  fi
  ((maxloops--))
  changed=0
  for f in ${plugin_dir}/*.hpi ; do
	if [[ ! " ${pluginsProcesed[*]} " == *"${f}"* ]]; then
	   # get a list of only non-optional dependencies
	   echo "Checking dependencies for ${f}"
	   
	   fileType=`file $f`
	   
	   if [[ ! " $fileType " == *"archive"* ]]; then
	      echo "$f was not a proper archive file - check the file"
		  pluginsProcesed+=(${f})
		  continue
	   fi

	   hasDeps=0
	   manifest=`unzip -p ${f} META-INF/MANIFEST.MF`
	   if [[ -z $manifest ]]; then
	      echo "Didn't find a manifest in $f"
		  pluginsProcesed+=(${f})
		  continue
	   fi
	   
	   pluginDeps=`unzip -p ${f} META-INF/MANIFEST.MF | grep -c 'Plugin-Dependencies' | tr -d '\r\n'`
	   
	   if [ "$pluginDeps" == "0" ]; then
	      echo "Didn't find any dependencies for ${f}"
		  pluginsProcesed+=(${f})
		  continue
	   fi
	   
	   if [[ ! -z $pluginDeps ]]; then
	       pluginDeps=`unzip -p ${f} META-INF/MANIFEST.MF | tr -d '\r' | sed -e ':a;N;$!ba;s/\n //g' | grep -e 'Plugin-Dependencies' | awk '{print $2}' | tr "," "\n"`
		   hasDeps=1
	   else
	       echo "Didn't find any dependencies for ${f}"
		   pluginsProcesed+=(${f})
		   continue
	   fi

       #if deps were found, install them .. then set changed, so we re-loop all over all hpi's 
	    if [ "$hasDeps" == "1" ]; then
	        tmpDeps=`echo $pluginDeps | tr -d '\r' | sed -e 's/ /,/g'`
	        echo "Found deps: $tmpDeps"
            echo $pluginDeps | tr ' ' '\n' | 
            while IFS=: read plugin version; do     
			    if [[ " $version " == *"optional"* ]]; then
			      version=`echo $version | awk -F ";" '{print $1}'`
			    fi
			    installPlugin $plugin latest
            done
            changed=1
	    else
	        echo "Didn't find any dependencies for ${f}"
			pluginsProcesed+=(${f})
		    continue
       fi
	   pluginsProcesed+=(${f})
	fi
	echo "Done installing dependencies for ${f}"
  done

done

echo "all done"
exit