the apache plugin

1 files changed, 185 insertions, 0 deletions

diff --git a/charts.d/apache.chart.sh b/charts.d/apache.chart.sh
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index 0000000000..6c6e36e33f
--- /dev/null
+++ b/charts.d/apache.chart.sh
@@ -0,0 +1,185 @@
+#!/bin/sh
+
+# the URL to download apache status info
+apache_url="http://127.0.0.1:80/server-status?auto"
+
+# _update_every is a special variable - it holds the number of seconds
+# between the calls of the _update() function
+apache_update_every=
+
+# let netdata calculate averages (0)
+# or use apache calculated averages (1)
+apache_averages=0
+
+# convert apache floating point values
+# to integer using this multiplier
+# this only affects precision - the values
+# will be in the proper units
+apache_decimal_detail=1000000
+
+declare -a apache_response=()
+apache_accesses=0
+apache_kbytes=0
+apache_cpuload=0
+apache_uptime=0
+apache_reqpersec=0
+apache_bytespersec=0
+apache_bytesperreq=0
+apache_busyworkers=0
+apache_idleworkers=0
+apache_scoreboard=
+
+apache_get() {
+	apache_response=($(curl -s "${apache_url}"))
+	[ $? -ne 0 -o "${#apache_response[@]}" -eq 0 ] && return 1
+
+	if [ "${apache_response[0]}" != "Total" \
+		 -o "${apache_response[1]}" != "Accesses:" \
+		 -o "${apache_response[3]}" != "Total" \
+		 -o "${apache_response[4]}" != "kBytes:" \
+		 -o "${apache_response[6]}" != "CPULoad:" \
+		 -o "${apache_response[8]}" != "Uptime:" \
+		 -o "${apache_response[10]}" != "ReqPerSec:" \
+		 -o "${apache_response[12]}" != "BytesPerSec:" \
+		 -o "${apache_response[14]}" != "BytesPerReq:" \
+		 -o "${apache_response[16]}" != "BusyWorkers:" \
+		 -o "${apache_response[18]}" != "IdleWorkers:" \
+		 -o "${apache_response[20]}" != "Scoreboard:" \
+	   ]
+		then
+		echo >&2 "apache: Invalid response from apache server: ${apache_response[*]}"
+		return 1
+	fi
+
+	apache_accesses="${apache_response[2]}"
+	apache_kbytes="${apache_response[5]}"
+	
+	# float2int "${apache_response[7]}" ${apache_decimal_detail}
+	# apache_cpuload=${FLOAT2INT_RESULT}
+	
+	# apache_uptime="${apache_response[9]}"
+	
+	if [ ${apache_averages} -eq 1 ]
+		then
+		float2int "${apache_response[11]}" ${apache_decimal_detail}
+		apache_reqpersec=${FLOAT2INT_RESULT}
+
+		float2int "${apache_response[13]}" ${apache_decimal_detail}
+		apache_bytespersec=${FLOAT2INT_RESULT}
+	fi
+
+	float2int "${apache_response[15]}" ${apache_decimal_detail}
+	apache_bytesperreq=${FLOAT2INT_RESULT}
+
+	apache_busyworkers="${apache_response[17]}"
+	apache_idleworkers="${apache_response[19]}"
+	apache_scoreboard="${apache_response[21]}"
+
+	if [ -z "${apache_accesses}" \
+		-o -z "${apache_kbytes}" \
+		-o -z "${apache_cpuload}" \
+		-o -z "${apache_uptime}" \
+		-o -z "${apache_reqpersec}" \
+		-o -z "${apache_bytespersec}" \
+		-o -z "${apache_bytesperreq}" \
+		-o -z "${apache_busyworkers}" \
+		-o -z "${apache_idleworkers}" \
+		-o -z "${apache_scoreboard}" \
+		]
+		then
+		echo >&2 "apache: empty values got from apache server: ${apache_response[*]}"
+		return 1
+	fi
+
+	return 0
+}
+
+# _check is called once, to find out if this chart should be enabled or not
+apache_check() {
+
+	apache_get
+	if [ $? -ne 0 ]
+		then
+		echo >&2 "apache: cannot find stub_status on URL '${apache_url}'. Please set apache_url='http://apache.server:80/server-status?auto' in $confd/apache.conf"
+		return 1
+	fi
+
+	# this should return:
+	#  - 0 to enable the chart
+	#  - 1 to disable the chart
+
+	return 0
+}
+
+# _create is called once, to create the charts
+apache_create() {
+	cat <<EOF
+CHART apache.bytesperreq '' "apache Average Response Size (lifetime)" "bytes/request" apache apache area 16005 $apache_update_every
+DIMENSION size '' absolute 1 ${apache_decimal_detail}
+CHART apache.workers '' "apache Workers" "workers" apache apache stacked 16006 $apache_update_every
+DIMENSION idle '' absolute 1 1
+DIMENSION busy '' absolute 1 1
+EOF
+
+	if [ ${apache_averages} -eq 1 ]
+		then
+		# apache calculated averages
+		cat <<EOF2
+CHART apache.requests '' "apache Requests" "requests/s" apache apache line 16001 $apache_update_every
+DIMENSION requests '' absolute 1 ${apache_decimal_detail}
+CHART apache.net '' "apache Bandwidth" "kilobits/s" apache apache area 16002 $apache_update_every
+DIMENSION sent '' absolute 8 $[apache_decimal_detail * 1000]
+EOF2
+	else
+		# netdata calculated averages
+		cat <<EOF3
+CHART apache.requests '' "apache Requests" "requests/s" apache apache line 16001 $apache_update_every
+DIMENSION requests '' incremental 1 1
+CHART apache.net '' "apache Bandwidth" "kilobits/s" apache apache area 16002 $apache_update_every
+DIMENSION sent '' incremental 8 1
+EOF3
+	fi
+
+	return 0
+}
+
+# _update is called continiously, to collect the values
+apache_update() {
+	local reqs net
+	# the first argument to this function is the microseconds since last update
+	# pass this parameter to the BEGIN statement (see bellow).
+
+	# do all the work to collect / calculate the values
+	# for each dimension
+	# remember: KEEP IT SIMPLE AND SHORT
+
+	apache_get || return 1
+
+	if [ ${apache_averages} -eq 1 ]
+		then
+		reqs=${apache_reqpersec}
+		net=${apache_bytespersec}
+	else
+		reqs=${apache_accesses}
+		net=${apache_kbytes}
+	fi
+
+	# write the result of the work.
+	cat <<VALUESEOF
+BEGIN apache.requests $1
+SET requests = $[reqs]
+END
+BEGIN apache.net $1
+SET sent = $[net]
+END
+BEGIN apache.bytesperreq $1
+SET size = $[apache_bytesperreq]
+END
+BEGIN apache.workers $1
+SET idle = $[apache_idleworkers]
+SET busy = $[apache_busyworkers]
+END
+VALUESEOF
+
+	return 0
+}