-#!/bin/sh
+# no need for shebang - this file is loaded from charts.d.plugin
+
+# netdata
+# real-time performance and health monitoring, done right!
+# (C) 2016 Costa Tsaousis <costa@tsaousis.gr>
+# GPL v3+
+#
+
+squid_host=
+squid_port=
+squid_url=
+squid_timeout=2
+squid_update_every=2
+squid_priority=60000
+
+squid_get_stats_internal() {
+ local host="$1" port="$2" url="$3"
+ run squidclient -h $host -p $port $url
+}
+
+squid_get_stats() {
+ squid_get_stats_internal "$squid_host" "$squid_port" "$squid_url"
+}
-squid_url="http://127.0.0.1:8080/squid-internal-mgr/counters"
+squid_autodetect() {
+ local host="127.0.0.1" port url x
+
+ for port in 3128 8080
+ do
+ for url in "cache_object://$host:$port/counters" "/squid-internal-mgr/counters"
+ do
+ x=$(squid_get_stats_internal "$host" "$port" "$url" | grep client_http.requests)
+ if [ ! -z "$x" ]
+ then
+ squid_host="$host"
+ squid_port="$port"
+ squid_url="$url"
+ debug "found squid at '$host:$port' with url '$url'"
+ return 0
+ fi
+ done
+ done
+
+ error "cannot find squid running in localhost. Please set squid_url='url' and squid_host='IP' and squid_port='PORT' in $confd/squid.conf"
+ return 1
+}
squid_check() {
+ require_cmd squidclient || return 1
+ require_cmd sed || return 1
+ require_cmd egrep || return 1
+
+ if [ -z "$squid_host" -o -z "$squid_port" -o -z "$squid_url" ]
+ then
+ squid_autodetect || return 1
+ fi
+
# check once if the url works
- wget 2>/dev/null -O /dev/null "$squid_url"
- if [ ! $? -eq 0 ]
+ local x="$(squid_get_stats | grep client_http.requests)"
+ if [ ! $? -eq 0 -o -z "$x" ]
then
- echo >&2 "squid: cannot fetch the url: $squid_url. Please set squid_url='url' in $confd/squid.conf"
+ error "cannot fetch URL '$squid_url' by connecting to $squid_host:$squid_port. Please set squid_url='url' and squid_host='host' and squid_port='port' in $confd/squid.conf"
return 1
fi
squid_create() {
# create the charts
cat <<EOF
-CHART squid.client_bandwidth '' "Squid Client Bandwidth" "kilobits/s" squid squid area 1 $update_every
+CHART squid_local.clients_net '' "Squid Client Bandwidth" "kilobits / sec" clients squid.clients.net area $((squid_priority + 1)) $squid_update_every
DIMENSION client_http_kbytes_in in incremental 8 1
DIMENSION client_http_kbytes_out out incremental -8 1
DIMENSION client_http_hit_kbytes_out hits incremental -8 1
-CHART squid.client_requests '' "Squid Client Requests" "requests/s" squid squid line 3 $update_every
+CHART squid_local.clients_requests '' "Squid Client Requests" "requests / sec" clients squid.clients.requests line $((squid_priority + 3)) $squid_update_every
DIMENSION client_http_requests requests incremental 1 1
DIMENSION client_http_hits hits incremental 1 1
DIMENSION client_http_errors errors incremental -1 1
-CHART squid.server_bandwidth '' "Squid Server Bandwidth" "kilobits/s" squid squid area 2 $update_every
+CHART squid_local.servers_net '' "Squid Server Bandwidth" "kilobits / sec" servers squid.servers.net area $((squid_priority + 2)) $squid_update_every
DIMENSION server_all_kbytes_in in incremental 8 1
DIMENSION server_all_kbytes_out out incremental -8 1
-CHART squid.server_requests '' "Squid Server Requests" "requests/s" squid squid line 4 $update_every
+CHART squid_local.servers_requests '' "Squid Server Requests" "requests / sec" servers squid.servers.requests line $((squid_priority + 4)) $squid_update_every
DIMENSION server_all_requests requests incremental 1 1
DIMENSION server_all_errors errors incremental -1 1
EOF
-
+
return 0
}
squid_update() {
+ # the first argument to this function is the microseconds since last update
+ # pass this parameter to the BEGIN statement (see bellow).
+
# do all the work to collect / calculate the values
# for each dimension
-
- # get the values from squid
- eval `wget 2>/dev/null -O - "$squid_url" | sed -e "s/\./_/g" -e "s/ = /=/g" | egrep "(^client_http_|^server_all_)"`
+ # remember: KEEP IT SIMPLE AND SHORT
+
+ # 1. get the counters page from squid
+ # 2. sed to remove spaces; replace . with _; remove spaces around =; prepend each line with: local squid_
+ # 3. egrep lines starting with:
+ # local squid_client_http_ then one or more of these a-z 0-9 _ then = and one of more of 0-9
+ # local squid_server_all_ then one or more of these a-z 0-9 _ then = and one of more of 0-9
+ # 4. then execute this as a script with the eval
+ #
+ # be very carefull with eval:
+ # prepare the script and always grep at the end the lines that are usefull, so that
+ # even if something goes wrong, no other code can be executed
+
+ eval "$(squid_get_stats |\
+ sed -e "s/ \+/ /g" -e "s/\./_/g" -e "s/^\([a-z0-9_]\+\) *= *\([0-9]\+\)$/local squid_\1=\2/g" |\
+ egrep "^local squid_(client_http|server_all)_[a-z0-9_]+=[0-9]+$")"
# write the result of the work.
cat <<VALUESEOF
-BEGIN squid.client_bandwidth
-SET client_http_kbytes_in = $client_http_kbytes_in
-SET client_http_kbytes_out = $client_http_kbytes_out
-SET client_http_hit_kbytes_out = $client_http_hit_kbytes_out
+BEGIN squid_local.clients_net $1
+SET client_http_kbytes_in = $squid_client_http_kbytes_in
+SET client_http_kbytes_out = $squid_client_http_kbytes_out
+SET client_http_hit_kbytes_out = $squid_client_http_hit_kbytes_out
END
-BEGIN squid.client_requests
-SET client_http_requests = $client_http_requests
-SET client_http_hits = $client_http_hits
-SET client_http_errors = $client_http_errors
+BEGIN squid_local.clients_requests $1
+SET client_http_requests = $squid_client_http_requests
+SET client_http_hits = $squid_client_http_hits
+SET client_http_errors = $squid_client_http_errors
END
-BEGIN squid.server_bandwidth
-SET server_all_kbytes_in = $server_all_kbytes_in
-SET server_all_kbytes_out = $server_all_kbytes_out
+BEGIN squid_local.servers_net $1
+SET server_all_kbytes_in = $squid_server_all_kbytes_in
+SET server_all_kbytes_out = $squid_server_all_kbytes_out
END
-BEGIN squid.server_requests
-SET server_all_requests = $server_all_requests
-SET server_all_errors = $server_all_errors
+BEGIN squid_local.servers_requests $1
+SET server_all_requests = $squid_server_all_requests
+SET server_all_errors = $squid_server_all_errors
END
VALUESEOF
return 0
}
-
projects / netdata.git / blobdiff