zeek/doc/scripting/framework_logging_factorial_03.zeek
Tim Wojtulewicz ded98cd373 Copy docs into Zeek repo directly
This is based on commit 2731def9159247e6da8a3191783c89683363689c from the
zeek-docs repo.
2025-09-26 02:58:29 +00:00

45 lines
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Text

module Factor;
export {
redef enum Log::ID += { LOG };
type Info: record {
num: count &log;
factorial_num: count &log;
};
}
function factorial(n: count): count
{
if ( n == 0 )
return 1;
else
return (n * factorial(n - 1));
}
event zeek_done()
{
local numbers: vector of count = vector(1, 2, 3, 4, 5, 6, 7, 8, 9, 10);
for ( n in numbers )
Log::write( Factor::LOG, [$num=numbers[n],
$factorial_num=factorial(numbers[n])]);
}
function mod5(id: Log::ID, path: string, rec: Factor::Info) : string
{
if ( rec$factorial_num % 5 == 0 )
return "factor-mod5";
else
return "factor-non5";
}
event zeek_init()
{
Log::create_stream(LOG, [$columns=Info, $path="factor"]);
local filter: Log::Filter = [$name="split-mod5s", $path_func=mod5];
Log::add_filter(Factor::LOG, filter);
Log::remove_filter(Factor::LOG, "default");
}