diff options
Diffstat (limited to 'netwatch-notify.rsc')
| -rw-r--r-- | netwatch-notify.rsc | 186 |
1 files changed, 186 insertions, 0 deletions
diff --git a/netwatch-notify.rsc b/netwatch-notify.rsc new file mode 100644 index 0000000..d04d23f --- /dev/null +++ b/netwatch-notify.rsc @@ -0,0 +1,186 @@ +#!rsc by RouterOS +# RouterOS script: netwatch-notify +# Copyright (c) 2020-2023 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 EitherOr; +:global IfThenElse; +:global IsDNSResolving; +:global LogPrintExit2; +:global ParseKeyValueStore; +:global ScriptFromTerminal; +:global ScriptLock; +:global SendNotification2; +:global SymbolForNotification; + +:local NetwatchNotifyHook do={ + :local Name [ :tostr $1 ]; + :local Type [ :tostr $2 ]; + :local State [ :tostr $3 ]; + :local Hook [ :tostr $4 ]; + + :global LogPrintExit2; + :global ValidateSyntax; + + :if ([ $ValidateSyntax $Hook ] = true) do={ + :do { + [ :parse $Hook ]; + } on-error={ + $LogPrintExit2 warning $0 ("The " . $State . "-hook for " . $Type . " '" . $Name . \ + "' failed to run.") false; + :return ("The hook failed to run."); + } + } else={ + $LogPrintExit2 warning $0 ("The " . $State . "-hook for " . $Type . " '" . $Name . \ + "' failed syntax validation.") false; + :return ("The hook failed syntax validation."); + } + + $LogPrintExit2 info $0 ("Ran hook on " . $Type . " '" . $Name . "' " . $State . ": " . \ + $Hook) false; + :return ("Ran hook:\n" . $Hook); +} + +$ScriptLock $0; + +:local ScriptFromTerminalCached [ $ScriptFromTerminal $0 ]; + +:if ([ /system/resource/get uptime ] < 5m) do={ + $LogPrintExit2 info $0 ("System just booted, giving netwatch some time to settle.") true; +} + +:if ([ :typeof $NetwatchNotify ] = "nothing") do={ + :set NetwatchNotify ({}); +} + +:foreach Host in=[ /tool/netwatch/find where comment~"notify" !disabled ] do={ + :local HostVal [ /tool/netwatch/get $Host ]; + :local Type [ $IfThenElse ($HostVal->"type" ~ "^(https?-get|tcp-conn)\$") "service" "host" ]; + :local HostInfo [ $ParseKeyValueStore ($HostVal->"comment") ]; + :local HostDetails ($HostVal->"host" . \ + [ $IfThenElse ([ :len ($HostInfo->"resolve") ] > 0) (", " . $HostInfo->"resolve") ]); + + :if ($HostInfo->"notify" = true && $HostInfo->"disabled" != true) do={ + :local Name [ $EitherOr ($HostInfo->"name") ($HostVal->"name") ]; + + :local Metric { "count-down"=0; "count-up"=0; "notified"=false; "resolve-failcnt"=0 }; + :if ([ :typeof ($NetwatchNotify->$Name) ] = "array") do={ + :set $Metric ($NetwatchNotify->$Name); + } + + :if ([ :typeof ($HostInfo->"resolve") ] = "str") do={ + :if ([ $IsDNSResolving ] = true) do={ + :do { + :local Resolve [ :resolve ($HostInfo->"resolve") ]; + :if ($Resolve != $HostVal->"host") do={ + $LogPrintExit2 info $0 ("Name '" . $HostInfo->"resolve" . [ $IfThenElse \ + ($HostInfo->"resolve" != $HostInfo->"name") ("' for " . $Type . " '" . \ + $HostInfo->"name") "" ] . "' resolves to different address " . $Resolve . \ + ", updating.") false; + /tool/netwatch/set host=$Resolve $Host; + :set ($Metric->"resolve-failcnt") 0; + } + } on-error={ + :set ($Metric->"resolve-failcnt") ($Metric->"resolve-failcnt" + 1); + :if ($Metric->"resolve-failcnt" = 3) do={ + $LogPrintExit2 warning $0 ("Resolving name '" . $HostInfo->"resolve" . [ $IfThenElse \ + ($HostInfo->"resolve" != $HostInfo->"name") ("' for " . $Type . " '" . \ + $HostInfo->"name") "" ] . "' failed.") false; + } + } + } + } + + :if ($HostVal->"status" = "up") do={ + :local CountDown ($Metric->"count-down"); + :if ($CountDown > 0) do={ + $LogPrintExit2 info $0 \ + ("The " . $Type . " '" . $Name . "' (" . $HostDetails . ") is up.") false; + :set ($Metric->"count-down") 0; + } + :set ($Metric->"count-up") ($Metric->"count-up" + 1); + :if ($Metric->"notified" = true) do={ + :local Message ("The " . $Type . " '" . $Name . "' (" . $HostDetails . \ + ") is up since " . $HostVal->"since" . ".\n" . \ + "It was down for " . $CountDown . " checks since " . ($Metric->"since") . "."); + :if ([ :typeof ($HostInfo->"up-hook") ] = "str") do={ + :set Message ($Message . "\n\n" . [ $NetwatchNotifyHook $Name $Type "up" \ + ($HostInfo->"up-hook") ]); + } + $SendNotification2 ({ origin=$0; silent=($HostInfo->"silent"); \ + subject=([ $SymbolForNotification "white-heavy-check-mark" ] . "Netwatch Notify: " . \ + $Name . " up"); \ + message=$Message }); + } + :set ($Metric->"notified") false; + :set ($Metric->"parent") ($HostInfo->"parent"); + :set ($Metric->"since"); + } else={ + :set ($Metric->"count-down") ($Metric->"count-down" + 1); + :set ($Metric->"count-up") 0; + :set ($Metric->"parent") ($HostInfo->"parent"); + :set ($Metric->"since") ($HostVal->"since"); + :local CountDown [ $IfThenElse ([ :tonum ($HostInfo->"count") ] > 0) ($HostInfo->"count") 5 ]; + :local Parent ($HostInfo->"parent"); + :local ParentUp false; + :while ([ :len $Parent ] > 0) do={ + :set CountDown ($CountDown + 1); + :set Parent ($NetwatchNotify->$Parent->"parent"); + } + :set Parent ($HostInfo->"parent"); + :local ParentNotified false; + :while ($ParentNotified = false && [ :len $Parent ] > 0) do={ + :set ParentNotified [ $IfThenElse (($NetwatchNotify->$Parent->"notified") = true) \ + true false ]; + :set ParentUp ($NetwatchNotify->$Parent->"count-up"); + :if ($ParentNotified = false) do={ + :set Parent ($NetwatchNotify->$Parent->"parent"); + } + } + :if ($Metric->"notified" = false || $Metric->"count-down" % 120 = 0 || \ + $ScriptFromTerminalCached = true) do={ + $LogPrintExit2 [ $IfThenElse ($HostInfo->"no-down-notification" != true) info debug ] $0 \ + ("The " . $Type . " '" . $Name . "' (" . $HostDetails . ") is down for " . \ + $Metric->"count-down" . " checks, " . [ $IfThenElse ($ParentNotified = false) [ $IfThenElse \ + ($Metric->"notified" = true) ("already notified.") ($CountDown - $Metric->"count-down" . \ + " to go.") ] ("parent " . $Type . " " . $Parent . " is down.") ]) false; + } + :if ((($CountDown * 2) - ($Metric->"count-down" * 3)) / 2 = 0 && \ + [ :typeof ($HostInfo->"pre-down-hook") ] = "str") do={ + $NetwatchNotifyHook $Name $Type "pre-down" ($HostInfo->"pre-down-hook"); + } + :if ($ParentNotified = false && $Metric->"count-down" >= $CountDown && \ + ($ParentUp = false || $ParentUp > 2) && $Metric->"notified" != true) do={ + :local Message ("The " . $Type . " '" . $Name . "' (" . $HostDetails . \ + ") is down since " . $HostVal->"since" . "."); + :if ([ :typeof ($HostInfo->"down-hook") ] = "str") do={ + :set Message ($Message . "\n\n" . [ $NetwatchNotifyHook $Name $Type "down" \ + ($HostInfo->"down-hook") ]); + } + :if ($HostInfo->"no-down-notification" != true) do={ + $SendNotification2 ({ origin=$0; silent=($HostInfo->"silent"); \ + subject=([ $SymbolForNotification "cross-mark" ] . "Netwatch Notify: " . \ + $Name . " down"); \ + message=$Message }); + } + :set ($Metric->"notified") true; + } + } + :set ($NetwatchNotify->$Name) { + "count-down"=($Metric->"count-down"); + "count-up"=($Metric->"count-up"); + "notified"=($Metric->"notified"); + "parent"=($Metric->"parent"); + "resolve-failcnt"=($Metric->"resolve-failcnt"); + "since"=($Metric->"since") }; + } +} |