install_jenkins_plugin.sh

#!/bin/bash

set -e

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

installPlugin() {
  if [ -f ${plugin_dir}/${1}.hpi -o -f ${plugin_dir}/${1}.jpi ]; then
    if [ "$2" == "1" ]; then
      return 1
    fi
    echo "Skipped: $1 (already installed)"
    return 0
  else
    echo "Installing: $1"
    curl -L --silent --output ${plugin_dir}/${1}.hpi  ${UPDATES_URL}/${1}/${2}/${1}.hpi
    return 0
  fi
}

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

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


changed=1
maxloops=100

while [ "$changed"  == "1" ]; do
  echo "Check for missing dependecies ..."
  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 ${plugin_dir}/*.hpi ; do
    # get a list of only non-optional dependencies
    deps=$( 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" | grep -v 'resolution:=optional')
    
    #if deps were found, install them .. then set changed, so we re-loop all over all xpi's 
    if [[ ! -z $deps ]]; then
       echo $deps | tr ' ' '\n' | 
       while IFS=: read plugin version; do
          installPlugin $plugin $version
       done
       changed=1
    fi
  done
done

#echo "fixing permissions"

#chown ${file_owner} ${plugin_dir} -R

echo "all done"

Thank you for including the UPDATES_URL instead of leaving it to be populated by the environment!

Note that the set -e breaks dep resolution in the event that a plugin without deps ends up first in the plugins directory because the unzip pipe fails. You can either turn off set -e, or add ||true to the end of the unzip pipeline.

just as a hint, if you want to use that on windows (or write the listing there) make sure the file containing the plugins has unix style line endings otherwise you will get wired errors from curl that the url contains incorrect characters (the carriage return screws the url string).

For me it seems that the last line in the plugin list file is ignored, the workaround is simply to end your plugin list file with a blank line.

On my mac, with BSD sed, I had to change the sed command to this:

sed -e ':a' -e 'N' -e '$!ba' -e 's/\n //g'