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*********
HashXXmod
*********
Purpose
=======
Generates a number which is mod of given string's hash.
hash32mod(literal_string, modulo) / hash32mod(literal_string, modulo, seed)
---------------------------------------------------------------------------
Generates a number which is calculated on (32 bit hash of the given string % modulo)
- If modulo is not a valid number, then 0 is returned.
- If modulo is 0, then 0 is returned.
- Seed is an optional parameter with default = 0.
- If seed is not a valid unsigned number, then 0 is returned.
hash64mod(literal_string, modulo) / hash64mod(literal_string, modulo, seed)
---------------------------------------------------------------------------
Generates a number which is calculated on (64 bit hash of the given string % modulo)
- If modulo is not a valid number, then 0 is returned.
- If modulo is 0, then 0 is returned.
- Seed is an optional parameter with default = 0.
- If seed is not a valid unsigned number, then 0 is returned.
.. warning::
- Default hash implementation is non-crypto.
- To use xxhash enable compile time flag.
Example
=======
.. code-block:: none
module(load="fmhash")
if (hash64mod($!msg!request_id, 100) <= 30) then {
//send out
}
.. seealso::
:doc:`Hash based sampling<../../tutorials/hash_sampling>`
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