sunspot_init.rb

# (1) copy the newrelic rpm java client into #{RAILS_ROOT}/solr/newrelic
# (2) add a newrelic.yml in that directory with you API key
# (3) add this monkey patch in an initializer to load newrelic with the solr server
Sunspot::Server.class_eval do
  def run
    command = ['java']
    command << "-Xms#{min_memory}" if min_memory
    command << "-Xmx#{max_memory}" if max_memory
    command << "-Djetty.port=#{port}" if port
    command << "-Dsolr.data.dir=#{solr_data_dir}" if solr_data_dir
    command << "-Dsolr.solr.home=#{solr_home}" if solr_home
    command << "-Djava.util.logging.config.file=#{logging_config_path}" if logging_config_path
    command << "-javaagent:#{File.join(Rails.root, 'solr', 'newrelic', 'newrelic.jar')}"
    command << "-Dnewrelic.environment=#{Rails.env}"
    command << '-jar' << File.basename(solr_jar)
    FileUtils.cd(File.dirname(solr_jar)) do
      exec(Escape.shell_command(command))
    end
  end
end