#!/bin/sh
#
# This plugin will graph data from mod_jk
#
# Author: Anders Welén, anders.welen@redpill-linpro.com
#

url="http://localhost/jkstatus?mime=prop"
wget=`which wget`

if [ "$1" = "autoconf" ]
then
	if test "x$wget" =  "x"
	then
		echo "no (need wget)"
    		exit 0
	fi
	echo yes
	exit 0
fi

if [ "$1" = "config" ]
then
	nodes=`$wget -q --no-cache $url -O - | grep "^worker\..*\.type=ajp13$" | awk -F . '{print $2}'`

	# Status graph
	echo "multigraph mod_jk_status"
	echo "graph_title mod_jk Status"
	echo "graph_category webserver"
	echo "graph_info This graph shows the status of the different mod_jk nodes."
	echo "graph_vlabel Status"

	for i in $nodes
	do
		echo "$i.label $i"
		echo "$i.info 1=Ok, 2=All connections busy, 3=Error"
		echo "$i.warning 1"
		echo "$i.critical 2"
	done

        # Request graphs
        for i in $nodes
        do
        	echo "multigraph mod_jk_requests_$i"
        	echo "graph_title mod_jk Requests $i"
          echo "graph_category webserver"
        	echo "graph_info This graph shows the status of requests to the mod_jk node: $i"
        	echo "graph_vlabel Request"
                echo "busy.label Current"
                echo "max_busy.label Max. concurrent"
                echo "errors.label Errors/min"
                echo "errors.info The number of errors/min"
                echo "errors.type COUNTER"
                echo "errors.graph_period minute"
        done

	# Traffic graphs
        for i in $nodes
        do
                echo "multigraph mod_jk_traffic_$i"
                echo "graph_title mod_jk Traffic $i"
                echo "graph_category webserver"
                echo "graph_info This graph shows the traffic statistics to the mod_jk node: $i"
                echo "graph_vlabel Bytes/min"
                echo "transferred.label Write to node (bytes/min)"
                echo "transferred.type COUNTER"
                echo "transferred.graph_period minute"
                echo "read.label Read from node (bytes/min)"
                echo "read.type COUNTER"
                echo "read.graph_period minute"
        done

	exit 0
fi

data=`$wget -q --no-cache $url -O -`

# Status graph
echo "multigraph mod_jk_status"
for i in `echo $data | sed 's/worker/\nworker/g' | grep "^worker\..*\.state=.*"`
do
	node=`echo $i | awk -F . '{print $2}'`
	status=`echo $i | awk -F = '{print $2}'`

	value=0
	if [ `echo $status | sed 's/^OK/XOK/'` = "X$status" ]
	then
		value=1
	fi

	if [ `echo $status | sed 's/BUSY/X/'` != $status ]
	then
		value=2
	fi

	if [ `echo $status | sed 's/^ERR/XERR/'` = "X$status" ]
	then
		value=3
	fi

	echo "$node.value $value"
done

# Request graphs
for node in `echo $data | sed 's/worker/\nworker/g' | grep "^worker\..*\.type=ajp13" | awk -F . '{print $2}'`
do
	echo "multigraph mod_jk_requests_$node"
	echo "busy.value `echo $data |  sed 's/worker/\nworker/g' | grep "^worker.$node.busy" | awk -F = '{print $2}'`"
	echo "max_busy.value `echo $data |  sed 's/worker/\nworker/g' | grep "^worker.$node.max_busy" | awk -F = '{print $2}'`"
	echo "errors.value `echo $data |  sed 's/worker/\nworker/g' | grep "^worker.$node.errors" | awk -F = '{print $2}'`"
done

# Traffic graphs
for node in `echo $data | sed 's/worker/\nworker/g' | grep "^worker\..*\.type=ajp13" | awk -F . '{print $2}'`
do
        echo "multigraph mod_jk_traffic_$node"
        echo "transferred.value `echo $data |  sed 's/worker/\nworker/g' | grep "^worker.$node.transferred" | awk -F = '{print $2}'`"
        echo "read.value `echo $data |  sed 's/worker/\nworker/g' | grep "^worker.$node.read" | awk -F = '{print $2}'`"
done