manifest.xml

<?xml version="1.0"?>
<!DOCTYPE service_bundle SYSTEM '/usr/share/lib/xml/dtd/service_bundle.dtd.1'>
<service_bundle type="manifest" name="minecraft">
  <service name="minecraft" type="service" version="1">

    <create_default_instance enabled="true"/>
    <single_instance/>

    <dependency name="milestone" grouping="require_all" restart_on="none" type="service">
      <service_fmri value="svc:/milestone/multi-user"/>
    </dependency>

    <exec_method type="method" name="start"
                 exec="/opt/local/minecraft/start.sh" timeout_seconds="60"/>
    <exec_method type="method" name="stop" exec=":kill" timeout_seconds="60"/>

    <stability value="Unstable"/>

    <template>
      <common_name>
        <loctext xml:lang="C">Minecraft</loctext>
      </common_name>
    </template>
  </service>
</service_bundle>

start.sh

#!/usr/bin/sh

cd /opt/local/minecraft && /opt/local/bin/java -d64 -server -Xms1G -Xmx1792M -Djava.security.egd=file:/dev/random -XX:-UseVMInterruptibleIO -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalPacing -XX:ParallelGCThreads=4 -XX:+AggressiveOpts  -jar minecraft_server.jar nogui &