[79529] branches/gsoc11-statistics/base/install_launchd.sh

[derek at macports.org]

Revision: 79529
          http://trac.macports.org/changeset/79529
Author:   derek at macports.org
Date:     2011-06-16 09:58:42 -0700 (Thu, 16 Jun 2011)
Log Message:
-----------
Added install_launchd.sh

This script generates and loads launchd plist which will execute a specified script once a week.

The plist will be written to /Library/LaunchAgents/org.macports.stats.plist

The date and time the script will run is determined as follows:
Day of the week is the machine's hardware UUID mod 7
Hour and minute is set to the time that install_launchd is executed

Added Paths:
-----------
    branches/gsoc11-statistics/base/install_launchd.sh

Added: branches/gsoc11-statistics/base/install_launchd.sh
===================================================================
--- branches/gsoc11-statistics/base/install_launchd.sh	                        (rev 0)
+++ branches/gsoc11-statistics/base/install_launchd.sh	2011-06-16 16:58:42 UTC (rev 79529)
@@ -0,0 +1,90 @@
+#!/bin/sh
+
+# 
+
+# Where the generated plist should be written
+PLIST=/Library/LaunchAgents/org.macports.stats.plist
+
+die () {
+    echo >&2 "$@"
+    exit 1
+}
+
+# Make sure exactly 2 arguments are provided
+[ "$#" -eq 2 ] || die "exactly two arguments required"
+
+# $1 must be the path to the script launchd will execute
+SCRIPT=$1
+
+# $2 is the path to the MacPorts configuration file
+CONFIG=$2
+
+# Make sure the script argument is executable
+if [ ! -x "$SCRIPT" ]; then
+   	die "$SCRIPT is not a valid executable"
+fi
+
+# Make sure the config file exists
+if [ ! -f "$CONFIG" ]; then
+   	die "$CONFIG does not exist"
+fi
+
+# Determine the day and time that launchd should run the script
+setup_times() {
+    # Get hardware uuid - Hardware UUID: UUID
+    huuid=`system_profiler SPHardwareDataType | grep "Hardware UUID"`
+    
+    # Strip out Hardware UUID:   
+    huuid=`echo $huuid | awk '/Hardware UUID/ {print $3;}'`
+    
+    # Strip out '-' characters
+    huuid=`echo $huuid | tr -d -`
+    
+    # Weekday is hardware uuid mod 7
+    weekday=`echo $huuid % 7 | bc`
+    
+    # Use current hours and minute
+    hour=`date '+%H'`
+    minute=`date '+%M'`
+}
+
+# Generate the launchd plist that executes 'port stats submit'
+# Outputs to the file $plist
+generate_plist() {
+    setup_times
+	cat <<-EOF > $PLIST
+		<?xml version="1.0" encoding="UTF-8"?>
+        <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+        <plist version="1.0">
+         <dict>
+          <key>Label</key>
+          <string>org.macports.stats</string>
+          <key>ProgramArguments</key>
+          <array>
+             <string>$SCRIPT</string>
+             <string>$CONFIG</string>
+          </array>
+          <key>StartCalendarInterval</key>
+          <dict>
+            <key>Weekday</key>
+            <integer>$weekday</integer>
+            <key>Hour</key>
+            <integer>$hour</integer>
+            <key>Minute</key>
+            <integer>$minute</integer>
+          </dict>
+         </dict>
+        </plist>
+	EOF
+}
+
+# Install the plist using launchctl
+install_plist() {
+	launchctl load -w -F $PLIST
+}
+
+# Generate and install the plist
+generate_plist
+install_plist
+
+


Property changes on: branches/gsoc11-statistics/base/install_launchd.sh
___________________________________________________________________
Added: svn:executable
   + *
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