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global-functions: $ScriptLock: rework with tickets

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Getting the order right is not easy... We use a global variable to store
"tickets" in an array. Based on that scripts know their order.
This commit is contained in:
Christian Hesse 2021-06-27 23:31:25 +02:00
parent b2d0ed1240
commit 5d30886e59
1 changed files with 40 additions and 6 deletions
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46
global-functions
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@ -907,23 +907,57 @@
:local Script [ :tostr $1 ];
:local DoReturn $2;
:global GetRandomNumber;
:global IfThenElse;
:global LogPrintExit2;
:global ScriptLockOrder;
:if ([ :typeof $ScriptLockOrder ] = "nothing") do={
:set ScriptLockOrder [ :toarray "" ];
}
:local AddTicket do={
:return ($1, $2);
}
:local RemoveTicket do={
:local Return [ :toarray "" ];
:foreach Ticket in=$1 do={
:if ($Ticket != $2) do={
:set Return ($Return, $Ticket);
}
}
:return $Return;
}
:if ([ :len [ / system script find where name=$Script ] ] = 0) do={
$LogPrintExit2 error $0 ("A script named '" . $Script . "' does not exist!") true;
}
:if ([ :len [ / system script job find where script=$Script ] ] = 0) do={
:local JobCount [ :len [ / system script job find where script=$Script ] ];
:if ($JobCount = 0) do={
$LogPrintExit2 error $0 ("No script '" . $Script . "' is running!") true;
}
:if ([ :len [ / system script job find where script=$Script ] ] > 1) do={
$LogPrintExit2 info $0 ("Script " . $Script . " started more than once... Aborting.") \
[ $IfThenElse ($DoReturn = true) false true ];
:return true;
:if ([ :len ($ScriptLockOrder->$Script) ] > $JobCount) do={
$LogPrintExit2 error $0 ("More tickets than running scripts '" . $Script . "', resetting!") false;
:set ($ScriptLockOrder->$Script);
/ system script job remove [ find where script=$Script ];
}
:local MyTicket [ $GetRandomNumber ];
:set ($ScriptLockOrder->$Script) [ $AddTicket ($ScriptLockOrder->$Script) $MyTicket ];
:if ([ :len ($ScriptLockOrder->$Script) ] = $JobCount && ($ScriptLockOrder->$Script->0) = $MyTicket) do={
:set ($ScriptLockOrder->$Script) [ $RemoveTicket ($ScriptLockOrder->$Script) $MyTicket ];
:return false;
}
:return false;
:set ($ScriptLockOrder->$Script) [ $RemoveTicket ($ScriptLockOrder->$Script) $MyTicket ];
$LogPrintExit2 info $0 ("Script '" . $Script . "' started more than once... Aborting.") \
[ $IfThenElse ($DoReturn = true) false true ];
:return true;
}
# send notification via e-mail - expects at lease two string arguments