X-Git-Url: https://arthur.barton.de/gitweb/?a=blobdiff_plain;f=plugins.d%2Ftc-qos-helper.sh;h=074fece9a5e3d571618a69a0c3942ac7b11cd0ea;hb=315c388516a4750eab4b64d38f8bddd58b4e5aa4;hp=bff5217d28a449e81d96ec0fb55e34a14631045d;hpb=6911559e3af6b73b7be8fb1171b4645121ebe1ab;p=netdata.git

diff --git a/plugins.d/tc-qos-helper.sh b/plugins.d/tc-qos-helper.sh
index bff5217d..074fece9 100755
--- a/plugins.d/tc-qos-helper.sh
+++ b/plugins.d/tc-qos-helper.sh
@@ -1,42 +1,159 @@
 #!/usr/bin/env bash
 
+# netdata
+# real-time performance and health monitoring, done right!
+# (C) 2016 Costa Tsaousis <costa@tsaousis.gr>
+# GPL v3+
+#
+# This script is a helper to allow netdata collect tc data.
+# tc output parsing has been implemented in C, inside netdata
+# This script allows setting names to dimensions.
+
 export PATH="${PATH}:/sbin:/usr/sbin:/usr/local/sbin"
+export LC_ALL=C
+
+
+# -----------------------------------------------------------------------------
+# find /var/run/fireqos
+
+# the default
+fireqos_run_dir="/var/run/fireqos"
+
+function realdir {
+    local r="$1"
+    local t=$(readlink "$r")
+
+    while [ "$t" ]
+        do
+        r=$(cd $(dirname "$r") && cd $(dirname "$t") && pwd -P)/$(basename "$t")
+        t=$(readlink "$r")
+    done
+
+    dirname "$r"
+}
+
+if [ ! -d "${fireqos_run_dir}" ]
+    then
+
+    # the fireqos executable - we will use it to find its config
+    fireqos="$(which fireqos 2>/dev/null || command -v fireqos 2>/dev/null)"
+
+    if [ ! -z "${fireqos}" ]
+        then
+
+        fireqos_exec_dir="$(realdir ${fireqos})"
+
+        if [ ! -z "${fireqos_exec_dir}" -a "${fireqos_exec_dir}" != "." -a -f "${fireqos_exec_dir}/install.config" ]
+            then
+
+            LOCALSTATEDIR=
+            source "${fireqos_exec_dir}/install.config"
+
+            if [ -d "${LOCALSTATEDIR}/run/fireqos" ]
+                then
+                fireqos_run_dir="${LOCALSTATEDIR}/run/fireqos"
+            fi
+        fi
+    fi
+fi
+
+# -----------------------------------------------------------------------------
+# logging functions
 
 PROGRAM_FILE="$0"
 PROGRAM_NAME="$(basename $0)"
 PROGRAM_NAME="${PROGRAM_NAME/.plugin}"
 
+logdate() {
+    date "+%Y-%m-%d %H:%M:%S"
+}
+
+log() {
+    local status="${1}"
+    shift
+
+    echo >&2 "$(logdate): ${PROGRAM_NAME}: ${status}: ${*}"
+
+}
+
+warning() {
+    log WARNING "${@}"
+}
+
+error() {
+    log ERROR "${@}"
+}
+
+info() {
+    log INFO "${@}"
+}
+
+fatal() {
+    log FATAL "${@}"
+    exit 1
+}
+
+debug=0
+debug() {
+    [ $debug -eq 1 ] && log DEBUG "${@}"
+}
+
+
+# -----------------------------------------------------------------------------
+
 plugins_dir="${NETDATA_PLUGINS_DIR}"
 [ -z "$plugins_dir" ] && plugins_dir="$( dirname $PROGRAM_FILE )"
 
 config_dir=${NETDATA_CONFIG_DIR-/etc/netdata}
-tc="$(which tc 2>/dev/null)"
-fireqos_run_dir="/var/run/fireqos"
+tc="$(which tc 2>/dev/null || command -v tc 2>/dev/null)"
+
+
+# -----------------------------------------------------------------------------
+# user configuration
+
+# time in seconds to refresh QoS class/qdisc names
 qos_get_class_names_every=120
+
+# time in seconds to exit - netdata will restart the script
 qos_exit_every=3600
 
+# what to use? classes or qdiscs?
+tc_show="qdisc" # can also be "class"
+
+
+# -----------------------------------------------------------------------------
 # check if we have a valid number for interval
+
 t=${1}
 update_every=$((t))
 [ $((update_every)) -lt 1 ] && update_every=${NETDATA_UPDATE_EVERY}
 [ $((update_every)) -lt 1 ] && update_every=1
 
+
+# -----------------------------------------------------------------------------
 # allow the user to override our defaults
+
 if [ -f "${config_dir}/tc-qos-helper.conf" ]
     then
     source "${config_dir}/tc-qos-helper.conf"
 fi
 
-# default time function
-now_ms=
-current_time_ms() {
-    now_ms="$(date +'%s')000"
-}
+case "${tc_show}" in
+    qdisc|class)
+        ;;
+
+    *)
+        error "tc_show variable can be either 'qdisc' or 'class' but is set to '${tc_show}'. Assuming it is 'qdisc'."
+        tc_show="qdisc"
+        ;;
+esac
+
 
+# -----------------------------------------------------------------------------
 # default sleep function
+
 LOOPSLEEPMS_LASTWORK=0
 loopsleepms() {
-    [ "$1" = "tellwork" ] && shift
     sleep $1
 }
 
@@ -44,27 +161,51 @@ loopsleepms() {
 # with a high resolution timer function for precise looping.
 . "${plugins_dir}/loopsleepms.sh.inc"
 
+
+# -----------------------------------------------------------------------------
+# final checks we can run
+
 if [ -z "${tc}" -o ! -x "${tc}" ]
     then
-    echo >&2 "${PROGRAM_NAME}: Cannot find command 'tc' in this system."
-    exit 1
+    fatal "cannot find command 'tc' in this system."
 fi
 
-devices=
+tc_devices=
 fix_names=
 
+# -----------------------------------------------------------------------------
+
 setclassname() {
-    echo "SETCLASSNAME $3 $2"
+    if [ "${tc_show}" = "qdisc" ]
+        then
+        echo "SETCLASSNAME $4 $2"
+    else
+        echo "SETCLASSNAME $3 $2"
+    fi
 }
 
-show_tc() {
-    local x="${1}" interface_dev interface_classes interface_classes_monitor
+show_tc_cls() {
+    [ "${tc_show}" = "qdisc" ] && return 1
 
-    echo "BEGIN ${x}"
-    ${tc} -s class show dev ${x}
+    local x="${1}"
 
-    # check FireQOS names for classes
-    if [ ! -z "${fix_names}" -a -f "${fireqos_run_dir}/ifaces/${x}" ]
+    if [ -f /etc/iproute2/tc_cls ]
+    then
+        local classid name rest
+        while read classid name rest
+        do
+            [ -z "${classid}" -o -z "${name}" -o "${classid}" = "#" -o "${name}" = "#" -o "${classid:0:1}" = "#" -o "${name:0:1}" = "#" ] && continue
+            setclassname "" "${name}" "${classid}"
+        done </etc/iproute2/tc_cls
+        return 0
+    fi
+    return 1
+}
+
+show_fireqos_names() {
+    local x="${1}" name n interface_dev interface_classes interface_classes_monitor
+
+    if [ -f "${fireqos_run_dir}/ifaces/${x}" ]
     then
         name="$(<"${fireqos_run_dir}/ifaces/${x}")"
         echo "SETDEVICENAME ${name}"
@@ -78,15 +219,50 @@ show_tc() {
             setclassname ${n//|/ }
         done
         [ ! -z "${interface_dev}" ] && echo "SETDEVICEGROUP ${interface_dev}"
+
+        return 0
     fi
+
+    return 1
+}
+
+show_tc() {
+    local x="${1}"
+
+    echo "BEGIN ${x}"
+
+    # netdata can parse the output of tc
+    ${tc} -s ${tc_show} show dev ${x}
+
+    # check FireQOS names for classes
+    if [ ! -z "${fix_names}" ]
+    then
+        show_fireqos_names "${x}" || show_tc_cls "${x}"
+    fi
+
     echo "END ${x}"
 }
 
-all_devices() {
-    cat /proc/net/dev | grep ":" | cut -d ':' -f 1 | while read dev
+find_tc_devices() {
+    local count=0 devs= dev rest l
+
+    # find all the devices in the system
+    # without forking
+    while IFS=":| " read dev rest
+    do
+        count=$((count + 1))
+        [ ${count} -le 2 ] && continue
+        devs="${devs} ${dev}"
+    done </proc/net/dev
+
+    # from all the devices find the ones
+    # that have QoS defined
+    # unfortunately, one fork per device cannot be avoided
+    tc_devices=
+    for dev in ${devs}
     do
-        l=$(${tc} class show dev ${dev} | wc -l)
-        [ $l -ne 0 ] && echo ${dev}
+        l="$(${tc} class show dev ${dev} 2>/dev/null)"
+        [ ! -z "${l}" ] && tc_devices="${tc_devices} ${dev}"
     done
 }
 
@@ -110,10 +286,10 @@ do
     then
         c=1
         fix_names="YES"
-        devices="$( all_devices )"
+        find_tc_devices
     fi
 
-    for d in ${devices}
+    for d in ${tc_devices}
     do
         show_tc ${d}
     done