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root / htools / Ganeti / Query / Filter.hs @ 1ba01ff7

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# Date Author Comment
037762a9 12/19/2012 03:37 pm Iustin Pop

Change makeSimpleFilter accept NumericValues as well

This is required for QueryJobs implementation; we change
makeSimpleFilter to support both string and integers as names.

Signed-off-by: Iustin Pop <>
Reviewed-by: Helga Velroyen <>
f94a9680 12/19/2012 03:37 pm Iustin Pop

Implement support for QFF_SPLIT_TIMESTAMP

I am very very unhappy with this patch. We have to do this, in order
to be compatible with the Python code and behaviour, but there's lots
of duplication; both the Python and the Haskell code will need to be
cleaned up and simplified (we don't need QFF_* at all)....
d277b075 11/30/2012 04:17 pm Iustin Pop

Optimise recursive Query filters

Currently, the And and Or filters use very nice code, e.g. in case of
OrFilter:

any id <$> mapM evaluateFilter flts

However, looking at the memory profiles shows that application of
any/id to monadic values via '<$>' does not work nicely, losing the...
228ef0f2 11/30/2012 04:17 pm Iustin Pop

Make Query operators enforce strictness

Currently, the query operators (binop, etc.) create thunks, instead of
forcing the evaluation of the simple boolean results. This results in
higher than needed memory use.

Signed-off-by: Iustin Pop <>...
5183e8be 10/25/2012 01:05 pm Iustin Pop

Convert query path from string errors to GanetiException

This patch converts all the call paths from 'Result' (which contains
just string errors) to 'ErrorResult', which holds
GanetiException-encoded errors. We can now return proper
OpPrereq/OpExec errors to the clients of the luxi/query socket....
bc4cdeef 10/11/2012 01:03 pm Iustin Pop

Add functionality for checking validity of names

This replicates in the Haskell Query2 implementation the behaviour of
the Python code: if a "simple" filter is passed (one that contains
only Or aggregators and EQ binary ops on the name field), then an
failure is flagged if the given values are not known....
b3d17f52 10/11/2012 01:03 pm Iustin Pop

Add a makeSimpleFilter function

And associated unittests. This will be needed for classic-style
queries.

Signed-off-by: Iustin Pop <>
Reviewed-by: Michael Hanselmann <>
f3baf5ef 09/04/2012 04:51 pm Iustin Pop

Move JSON.hs and Compat.hs out from under HTools/

These two files are not htools-specific, so let's move them out of the
HTools subdirectory/module hierarchy and directly under Ganeti.

Signed-off-by: Iustin Pop <>
Reviewed-by: René Nussbaumer <>
01606931 09/04/2012 02:00 pm Iustin Pop

Implement compilation of regexes at creation time

This means that the verification of the correctness of the regex is
done once, at the deserialisation/creation time, as in the Python
code. To do this, we have to change the FilterRegex type from an alias...
4cab6703 09/04/2012 02:00 pm Iustin Pop

Rename the Qlang and Queryd modules

Per the new query module hierarchy, rename Qlang to Query/Language and
Queryd to Query/Server. This way, all query-related functionality is
now "contained" in the Query/ directory.

Signed-off-by: Iustin Pop <>...
8a65c02b 09/04/2012 02:00 pm Iustin Pop

Add filtering support in Query

This adds basic infrastructure for filtering (fully functional except,
as usual, for runtime data), and then uses it for node queries.

Since the filtering exports regex matching as an external
functionality, we have to use a regex library. There are many flavours...