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https://bro-tracker.atlassian.net/browse/BIT-1039?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Robin Sommer updated BIT-1039:
------------------------------
Status: Open (was: Merge Request)
> Merge request for Bloom filters
> -------------------------------
>
> Key: BIT-1039
> URL: https://bro-tracker.atlassian.net/browse/BIT-1039
> Project: Bro Issue Tracker
> Issue Type: New Feature
> Components: Bro
> Reporter: Matthias Vallentin
> Priority: Medium
> Fix For: 2.2
>
>
> The Bloom filter implementation in `topic/matthias/bloom-filter` is ready to
> merge into master. Have a look at the very end of `bro.bif` for the
> script-land interface.
> Internally, we have a new `BloomFilterVal`, which is serializable and
> mergeable and thus ready for cluster use. This `Val` contains a polymorphic
> Bloom filter instance, which hides the concrete Bloom filter type (currently
> only basic and counting). Moreover, this branch introduces the notion of
> ''hashers'', which are parameterizable (i.e., seedable) structures for
> hashing values ''k'' times. I recall that Bernhard waits for this feature.
> See `Hasher.h` for the documented interface.
> In the future, we need to rethink how to construct hash functions which only
> depend on a seed given at script land. This will be important when sharing
> Bloom filters across organizational boundaries. At this point, the
> implementation relies on `CompHash` (at least for composite values, such as
> records) which itself depends on the initial Bro seed generated at startup
> time or when the user specifies the environment variable `$BRO_SEED`.
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