routeros-scripts/log-forward

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#!rsc by RouterOS
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# RouterOS script: log-forward
# Copyright (c) 2020 Christian Hesse <mail@eworm.de>
# https://git.eworm.de/cgit/routeros-scripts/about/COPYING.md
#
# forward log messages via notification
# https://git.eworm.de/cgit/routeros-scripts/about/doc/log-forward.md
:global Identity;
:global LogForwardFilter;
:global LogForwardFilterMessage;
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:global LogForwardLast;
:global LogForwardRateLimit;
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:global IfThenElse;
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:global LogPrintExit;
:global MailServerIsUp;
:global ScriptLock;
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:global SendNotification;
:global SymbolForNotification;
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:global WaitFullyConnected;
$ScriptLock "log-forward";
:if ([ :typeof $LogForwardRateLimit ] = "nothing") do={
:set LogForwardRateLimit 0;
}
:if ($LogForwardRateLimit > 30) do={
:set LogForwardRateLimit ($LogForwardRateLimit - 1);
$LogPrintExit info ("Rate limit in action, not forwarding logs!") true;
}
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$WaitFullyConnected;
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:if ([ $MailServerIsUp ] = false) do={
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$LogPrintExit warning ("Mail server is not up.") true;
}
:local Count 0;
:local Messages "";
:local MessageVal;
:foreach Message in=[ / log find where !(topics~$LogForwardFilter) !(message~$LogForwardFilterMessage) ] do={
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:set MessageVal [ / log get $Message ];
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:if ($LogForwardLast = ($MessageVal->".id")) do={
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:set Messages "";
:set Count 0;
} else={
:set Messages ($Messages . "\n" . $MessageVal->"time" . " " . \
[ :tostr ($MessageVal->"topics") ] . " " . $MessageVal->"message");
:set Count ($Count + 1);
}
}
:if ($Count > 0) do={
$SendNotification ([ $SymbolForNotification "warning-sign" ] . "Log Forwarding") \
("The log on " . $Identity . " contains " . [ $IfThenElse ($Count = 1) \
"this message" ("these " . $Count . " messages") ] . " after " . \
[ / system resource get uptime ] . " uptime.\n" . $Messages);
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:set LogForwardRateLimit ($LogForwardRateLimit + 10);
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:set LogForwardLast ($MessageVal->".id");
} else={
:if ($LogForwardRateLimit > 0) do={
:set LogForwardRateLimit ($LogForwardRateLimit - 1);
}
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}