#!/bin/bash

STATS_FILE=/var/cache/bind/named.stats

# Remove old stats file
rm -f $STATS_FILE

# Generate new stats
/usr/sbin/rndc stats

# Delay until the stats file is written
i=0
while [ ! -f $STATS_FILE ]; do
	# We don't wait forever
	if [ $i -ge 10 ]; then
		exit 1
	fi
	i=$[ $i + 1 ]
	
	# Wait a little
	sleep 0.2
done

# Save view specific stuff
declare -A VIEWS
VIEWS[global]=""

# Read the stats file and parse it
MODE="unknown"
while read LINE; do
	if [[ "$LINE" =~ ^-- ]]; then
		# Statistics, skip this line
		continue
	elif [[ "$LINE" =~ ^\+\+ ]]; then
		# This is a section start, switch mode
		if [ "$LINE" == "++ Incoming Requests ++" ]; then
			MODE="req-in"
		elif [ "$LINE" == "++ Incoming Queries ++" ]; then
			MODE="query-in"
		elif [ "$LINE" == "++ Outgoing Queries ++" ]; then
			MODE="query-out"
			VIEW="default"
		elif [ "$LINE" == "++ Name Server Statistics ++" ]; then
			MODE="ns-stats"
		elif [ "$LINE" == "++ Zone Maintenance Statistics ++" ]; then
			MODE="zone-maint"
		elif [ "$LINE" == "++ Resolver Statistics ++" ]; then
			MODE="resolver"
			VIEW="default"
		elif [ "$LINE" == "++ Cache DB RRsets ++" ]; then
			MODE="cache"
			VIEW="default"
		elif [ "$LINE" == "++ Per Zone Query Statistics ++" ]; then
			MODE="zone"
			VIEW="default"
			ZONE="unknown"
		else
			MODE="unknown"
		fi
		
		continue
	fi
	
	# Parse based on current mode
	if [ "$MODE" == "req-in" ]; then
		# Line format is: <count> <opcode>
		read REQ_COUNT REQ_OPCODE <<< $( echo $LINE )
		VIEWS[global]+="req-in,$REQ_OPCODE:$REQ_COUNT"$'\n'
	elif [ "$MODE" == "query-in" ]; then
		# Line format is: <count> <rrtype>
		read QUERY_COUNT QUERY_RRTYPE <<< $( echo $LINE )
		VIEWS[global]+="query-in,$QUERY_RRTYPE:$QUERY_COUNT"$'\n'
	elif [ "$MODE" == "query-out" ]; then
		# Is this a section?
		if [[ "$LINE" =~ ^\[ ]]; then
			# Is this a view start?
			NEW_VIEW=$( echo "$LINE" | sed -n 's/^\[View: \(.*\)\]$/\1/p' )
			if [ -n "$NEW_VIEW" ]; then
				VIEW="$NEW_VIEW"
			fi
			
			continue
		fi
		
		# Ignore the _bind view
		if [ "$VIEW" == "_bind" ]; then
			continue
		fi

		# Line format is: <count> <rrtype>
		read QUERY_COUNT QUERY_RRTYPE <<< $( echo $LINE )
		VIEWS[$VIEW]+="query-out,$QUERY_RRTYPE:$QUERY_COUNT"$'\n'
	elif [ "$MODE" == "ns-stats" ]; then
		# Line format is: <count> <action>
		read COUNT ACTION <<< $( echo $LINE )
		VIEWS[global]+="ns-stats,$ACTION:$COUNT"$'\n'
	elif [ "$MODE" == "zone-maint" ]; then
		# Line format is: <count> <action>
		read COUNT ACTION <<< $( echo $LINE )
		VIEWS[global]+="zone-maint,$ACTION:$COUNT"$'\n'
	elif [ "$MODE" == "resolver" ]; then
		# Is this a section?
		if [[ "$LINE" =~ ^\[ ]]; then
			# Is this a view start?
			NEW_VIEW=$( echo "$LINE" | sed -n 's/^\[View: \(.*\)\]$/\1/p' )
			if [ -n "$NEW_VIEW" ]; then
				VIEW="$NEW_VIEW"
			fi

			continue
		fi
		
		# Ignore the _bind view
		if [ "$VIEW" == "_bind" ]; then
			continue
		fi

		# Line format is: <count> <action>
		read COUNT ACTION <<< $( echo $LINE )
		VIEWS[$VIEW]+="resolver,$ACTION:$COUNT"$'\n'
	elif [ "$MODE" == "cache" ]; then
		# Is this a section?
		if [[ "$LINE" =~ ^\[ ]]; then
			# Is this a view start?
			NEW_VIEW=$( echo "$LINE" | sed -n 's/^\[View: \(.*\)\]$/\1/p' )
			if [ -n "$NEW_VIEW" ]; then
				VIEW="$NEW_VIEW"
			fi

			continue
		fi
		
		# Ignore the _bind view
		if [ "$VIEW" == "_bind" ]; then
			continue
		fi

		# Line format is: <count> <action>
		read COUNT ACTION <<< $( echo $LINE )
		VIEWS[$VIEW]+="cache,$ACTION:$COUNT"$'\n'
	elif [ "$MODE" == "zone" ]; then
		# Is this a section?
		if [[ "$LINE" =~ ^\[ ]]; then
			# Does this line define a view?
			NEW_VIEW=$( echo "$LINE" | sed -n 's/^.* (view: \(.*\))\]$/\1/p' )
			if [ -n "$NEW_VIEW" ]; then
				VIEW="$NEW_VIEW"
			fi

			# Is this a zone start?
			NEW_ZONE=$( echo "$LINE" | sed -n 's/^\[\([^] ]*\).*/\1/p' )
			if [ -n "$NEW_ZONE" ]; then
				ZONE="$NEW_ZONE"
			fi
			
			continue
		fi
		
		# Ignore the _bind view
		if [ "$VIEW" == "_bind" ]; then
			continue
		fi

		# Line format is: <count> <action>
		read COUNT ACTION <<< $( echo $LINE )
		VIEWS[$VIEW]+="$ZONE,$ACTION:$COUNT"$'\n'
	fi
done < $STATS_FILE

for VIEW in "${!VIEWS[@]}"; do
	echo "<<<app-bind-$VIEW>>>"
	echo -n "${VIEWS[$VIEW]}"
done