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Diffstat (limited to 'collectors/charts.d.plugin/postfix/postfix.chart.sh')
| -rw-r--r-- | collectors/charts.d.plugin/postfix/postfix.chart.sh | 87 |
1 files changed, 87 insertions, 0 deletions
diff --git a/collectors/charts.d.plugin/postfix/postfix.chart.sh b/collectors/charts.d.plugin/postfix/postfix.chart.sh new file mode 100644 index 0000000..ff59db9 --- /dev/null +++ b/collectors/charts.d.plugin/postfix/postfix.chart.sh @@ -0,0 +1,87 @@ +# shellcheck shell=bash disable=SC1117 +# no need for shebang - this file is loaded from charts.d.plugin +# SPDX-License-Identifier: GPL-3.0-or-later + +# netdata +# real-time performance and health monitoring, done right! +# (C) 2016 Costa Tsaousis <costa@tsaousis.gr> +# + +# the postqueue command +# if empty, it will use the one found in the system path +postfix_postqueue= + +# how frequently to collect queue size +postfix_update_every=15 + +postfix_priority=60000 + +postfix_check() { + # this should return: + # - 0 to enable the chart + # - 1 to disable the chart + + # try to find the postqueue executable + if [ -z "$postfix_postqueue" ] || [ ! -x "$postfix_postqueue" ]; then + # shellcheck disable=SC2230 + postfix_postqueue="$(which postqueue 2>/dev/null || command -v postqueue 2>/dev/null)" + fi + + if [ -z "$postfix_postqueue" ] || [ ! -x "$postfix_postqueue" ]; then + # shellcheck disable=SC2154 + error "cannot find postqueue. Please set 'postfix_postqueue=/path/to/postqueue' in $confd/postfix.conf" + return 1 + fi + + return 0 +} + +postfix_create() { + cat <<EOF +CHART postfix_local.qemails '' "Postfix Queue Emails" "emails" queue postfix.queued.emails line $((postfix_priority + 1)) $postfix_update_every +DIMENSION emails '' absolute 1 1 +CHART postfix_local.qsize '' "Postfix Queue Emails Size" "emails size in KB" queue postfix.queued.size area $((postfix_priority + 2)) $postfix_update_every +DIMENSION size '' absolute 1 1 +EOF + + return 0 +} + +postfix_update() { + # the first argument to this function is the microseconds since last update + # pass this parameter to the BEGIN statement (see bellow). + + # do all the work to collect / calculate the values + # for each dimension + # remember: KEEP IT SIMPLE AND SHORT + + # 1. execute postqueue -p + # 2. get the line that begins with -- + # 3. match the 2 numbers on the line and output 2 lines like these: + # local postfix_q_size=NUMBER + # local postfix_q_emails=NUMBER + # 4. then execute this a script with the eval + # + # be very carefull with eval: + # prepare the script and always egrep at the end the lines that are usefull, so that + # even if something goes wrong, no other code can be executed + postfix_q_emails=0 + postfix_q_size=0 + + eval "$(run "$postfix_postqueue" -p | + grep "^--" | + sed -e "s/-- \([0-9]\+\) Kbytes in \([0-9]\+\) Requests.$/local postfix_q_size=\1\nlocal postfix_q_emails=\2/g" | + grep -E "^local postfix_q_(emails|size)=[0-9]+$")" + + # write the result of the work. + cat <<VALUESEOF +BEGIN postfix_local.qemails $1 +SET emails = $postfix_q_emails +END +BEGIN postfix_local.qsize $1 +SET size = $postfix_q_size +END +VALUESEOF + + return 0 +} |