Starting Redwood Platform Automatically with Launchd

Launchd was first shipped with macOS version 10.4 and is also available on FreeBSD as well as other systems. Below are a pair of example files you can use with launchd. You adjust the paths in the files to your installation path, which should point to the directory containing j2ee. In that directory, you create a directory named bin and create a shell script as outlined below; adapt the paths and user in the PLIST file accordingly.

Launchd Shell Script Wrapper

#!/bin/bash

# PATH to installation directory

RW_INSTALL=/opt/redwood
SERVER=${RW_INSTALL}/j2ee/cluster/server1
CATALINA_PID=${SERVER}/logs/process.pid

#Source your environment

if [ -e ${SERVER}/bin/setvars.sh ]; then
. ${SERVER}/bin/setvars.sh
fi

function stopInstance() {

date

echo "Shutting down Redwood"

${SERVER}/bin/start.sh

}

function startInstance() {

date

echo "Starting Redwood"

${SERVER}/bin/stop.sh

}


function restartInstance() {

date

echo "Restarting Redwood"

${SERVER}/bin/restart.sh

}

startInstance

# trap signal to quit/terminate

trap stopInstance INT QUIT ABRT KILL ALRM TERM TSTP

# trap HUP
trap restartInstance HUP

echo "Waiting for `cat ${CATALINA_PID}`"

wait `cat ${CATALINA_PID}`

PLIST File Contents

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple Computer//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
  <dict>
    <key>Label</key>
    <string>com.redwood.scheduler</string>
    <key>OnDemand</key>
    <false/>
    <key>RunAtLoad</key>
    <true/>
    <key>Program</key>
        <string>/opt/redwood/bin/launchd_wrapper.sh</string>
    <key>ServiceDescription</key>
    <string>Redwood Platform</string>
    <key>StandardErrorPath</key>
    <string>/opt/redwood/j2ee/cluster/server1/logs/launchd.err</string>
    <key>StandardOutPath</key>
    <string>/opt/redwood/j2ee/cluster/server1/logs/launchd.out</string>
    <key>UserName</key>
    <string>nobody</string>
  </dict>
</plist>

Procedure

1. Create a directory named <install_dir>/bin and create a file named launchd_wrapper.sh containing the above shell script code.
2. Make the file executable by issuing the following command chmod +x <install_dir>/bin/launchd_wrapper.sh.
3. Copy the contents for the PLIST file into /Library/LaunchDaemons/com.redwood.scheduler.plist.
4. Adapt any paths and change the user (default in this example is nobody).
5. Issue sudo launchctl load /Library/LaunchDaemons/com.redwood.scheduler.plist.
6. Issue sudo launchctl list and make sure your process has a PID.

See Also

• Starting Redwood Platform Automatically

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