#!rsc by RouterOS # RouterOS script: netwatch-notify # Copyright (c) 2020-2021 Christian Hesse <mail@eworm.de> # https://git.eworm.de/cgit/routeros-scripts/about/COPYING.md # # monitor netwatch and send notifications # https://git.eworm.de/cgit/routeros-scripts/about/doc/netwatch-notify.md :local 0 "netwatch-notify"; :global GlobalFunctionsReady; :while ($GlobalFunctionsReady != true) do={ :delay 500ms; } :global NetwatchNotify; :global IfThenElse; :global LogPrintExit2; :global ParseKeyValueStore; :global SendNotification2; :global SymbolForNotification; :global ValidateSyntax; :if ([ :typeof $NetwatchNotify ] = "nothing") do={ :set NetwatchNotify [ :toarray "" ]; } :foreach Host in=[ / tool netwatch find where comment~"^notify," disabled=no ] do={ :local HostVal [ / tool netwatch get $Host ]; :local HostInfo [ $ParseKeyValueStore ($HostVal->"comment") ]; :local HostName ($HostInfo->"hostname"); :local Metric { "count"=0; "notified"=false }; :if ([ :typeof ($NetwatchNotify->$HostName) ] = "array") do={ :set $Metric ($NetwatchNotify->$HostName); } :if ($HostVal->"status" = "up") do={ $LogPrintExit2 debug $0 ("Host " . $HostName . " (" . $HostVal->"host" . ") is up.") false; :local Count ($Metric->"count"); :set ($Metric->"count") 0; :if ($Metric->"notified" = true) do={ $SendNotification2 ({ subject=([ $SymbolForNotification "white-heavy-check-mark" ] . "Netwatch Notify: " . $HostName . " up"); \ message=("Host " . $HostName . " (" . $HostVal->"host" . ") is up since " . $HostVal->"since" . ".\n" . \ "It was down for " . $Count . " checks since " . ($Metric->"since") . ".") }); :if ([ :typeof ($HostInfo->"up-hook") ] = "str") do={ :if ([ $ValidateSyntax ($HostInfo->"up-hook") ] = true) do={ $LogPrintExit2 info $0 ("Running hook on host " . $HostName . " up: " . ($HostInfo->"up-hook")) false; [ :parse ($HostInfo->"up-hook") ]; } else={ $LogPrintExit2 warning $0 ("The up-hook for host " . $HostName . " failed syntax validation.") false; } } } :set ($Metric->"notified") false; :set ($Metric->"parent") ($HostInfo->"parent"); :set ($Metric->"since"); } else={ :set ($Metric->"count") ($Metric->"count" + 1); :set ($Metric->"parent") ($HostInfo->"parent"); :set ($Metric->"since") ($HostVal->"since"); :local Count [ $IfThenElse ([ :tonum ($HostInfo->"count") ] > 0) ($HostInfo->"count") 5 ]; :local Parent ($HostInfo->"parent"); :while ([ :len $Parent ] > 0) do={ :set Count ($Count + 1); :set Parent ($NetwatchNotify->$Parent->"parent"); } :set Parent ($HostInfo->"parent"); :local ParentNotified false; :while ($ParentNotified = false && [ :len $Parent ] > 0) do={ :set ParentNotified [ $IfThenElse (($NetwatchNotify->$Parent->"notified") = true) true false ]; :if ($ParentNotified = false) do={ :set Parent ($NetwatchNotify->$Parent->"parent"); } } $LogPrintExit2 info $0 ("Host " . $HostName . " (" . $HostVal->"host" . ") is down for " . \ $Metric->"count" . " checks, " . [ $IfThenElse ($ParentNotified = false) [ $IfThenElse \ ($Metric->"notified" = true) ("already notified.") ($Count - $Metric->"count" . " to go.") ] \ ("parent host " . $Parent . " is down.") ]) false; :if ($ParentNotified = false && $Metric->"count" >= $Count && $Metric->"notified" != true) do={ $SendNotification2 ({ subject=([ $SymbolForNotification "cross-mark" ] . "Netwatch Notify: " . $HostName . " down"); \ message=("Host " . $HostName . " (" . $HostVal->"host" . ") is down since " . $HostVal->"since" . ".") }); :set ($Metric->"notified") true; :if ([ :typeof ($HostInfo->"down-hook") ] = "str") do={ :if ([ $ValidateSyntax ($HostInfo->"down-hook") ] = true) do={ $LogPrintExit2 info $0 ("Running hook on host " . $HostName . " down: " . ($HostInfo->"down-hook")) false; [ :parse ($HostInfo->"down-hook") ]; } else={ $LogPrintExit2 warning $0 ("The down-hook for host " . $HostName . " failed syntax validation.") false; } } } } :set ($NetwatchNotify->$HostName) { "count"=($Metric->"count"); "notified"=($Metric->"notified"); "parent"=($Metric->"parent"); "since"=($Metric->"since") }; }