A Ruby code snippet whose function is to search the missing required OSGi bundles of a given one, recursively.

osgi.rb

require 'zip/zip'

def load_manifest(properties_content)
  properties = {}
  last_key = ""
  last_value = ""
  properties_content.each_line do |line|
    line.strip!
    if (line[0] != ?# and line[0] != ?=)
      i = line.index(': ')
      if (i)
        last_key = line[0..i - 1].strip
        last_value = line[i + 1..-1].strip
        properties[last_key] = last_value
      else
        properties[last_key] = properties[last_key] + line
      end
    end
  end
  properties
end

def load_required_bundles(file_content)
  bundles = []
  bundle_string = load_manifest(file_content)['Require-Bundle']
  if(!bundle_string)
    return nil
  end
  # puts "bundle_string: " + bundle_string
  raw_required_bundles = bundle_string.split(",")
  # puts "raw_required_bundles: #{raw_required_bundles}"
  raw_required_bundles.each do |line|
    i = line.index(';')
    if (i)
      value = line[0..i - 1].strip
      if(!value.match(/^\d.+/)) 
        bundles.push(value)
      end
    else
      value = line
      if(!value.match(/^\d.+/)) 
        bundles.push(value)
      end
    end
  end
  bundles
end

def load_required_bundles_from_jarfile(jarfile)
  # puts "jarfile=#{jarfile}"
  file_content = Zip::ZipFile.new(jarfile).read("META-INF/MANIFEST.MF")
  # puts "file_content is: #{file_content}"
  bundles = load_required_bundles(file_content)
  # puts "bundles = #{bundles}"
  bundles
end

def found_not_existing_bundles(bundle_file, target_dir = "/home/user/coderoot/rtc/icap/com.ibm.ws.icap.dt.fat/osgi_lib", base_eclipse_dir = "/home/user/java/eclipse_javaee_3.7.1", bundles_not_existing)

  required_bundles = load_required_bundles_from_jarfile(bundle_file)
  if(!required_bundles || required_bundles.size<=0)
    return
  end
  # puts required_bundles
  
  current_level_bundles_not_existing = []

  required_bundles.each do |bundle|
    search_result = Dir.glob("#{target_dir}/**/#{bundle}_*.jar")
    # puts search_result
    if(search_result.size==0)
      # puts "missing_bundle: #{bundle}"
      bundles_not_existing.push(bundle)
      current_level_bundles_not_existing.push(bundle)
    end
  end
  
  if (current_level_bundles_not_existing.size>0)
    current_level_bundles_not_existing.each do |missing_bundle|
      search_result = Dir.glob("#{base_eclipse_dir}/**/#{missing_bundle}_*.jar")
      if(search_result.size>0)
        found_not_existing_bundles(search_result[0], target_dir, base_eclipse_dir, bundles_not_existing)
      else
        puts "search_result is null for '#{base_eclipse_dir}/**/#{missing_bundle}_*.jar'!!!!!!!!!!!!!!"
      end
    end
  end
end


bundles_not_existing = []
base_eclipse_dir = "/home/user/java/eclipse_javaee_3.7.1"
found_not_existing_bundles('/home/user/java/eclipse_javaee_3.7.1/plugins/org.eclipse.ant.ui_3.5.100.v20110510.jar', "/home/user/coderoot/rtc/icap/com.ibm.ws.icap.dt.fat/osgi_lib", base_eclipse_dir, bundles_not_existing)

puts "bundles_not_existing======#{bundles_not_existing.uniq}"

bundles_not_existing.uniq.each do |bundle|
  search_result = Dir.glob("#{base_eclipse_dir}/**/#{bundle}_*.jar")
  if(search_result.size>0)
    puts "#{search_result[0]}"
    # system("cp #{search_result[0]} /home/user/temp/osgi")
  else
    puts "#{bundle} is not found!"
  end
end