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package Resmon::ExtComm; |
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use strict; |
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require Exporter; |
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use vars qw/@ISA @EXPORT/; |
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@ISA = qw/Exporter/; |
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@EXPORT = qw/cache_command/; |
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my %commhist; |
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my %commcache; |
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sub cache_command($$;$) { |
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my ($command, $expiry, $timeout) = @_; |
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$timeout ||= $expiry; |
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my $now = time; |
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if($commhist{$command}>$now) { |
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return $commcache{$command}; |
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} |
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# TODO: timeouts |
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$commcache{$command} = `$command`; |
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$commhist{$command} = $now + $expiry; |
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return $commcache{$command}; |
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} |
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1; |
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