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Fix differing log filters of streams from writing to same writer/path.

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Since WriterFrontend objects are looked up internally by writer type and
path, and they also expect to write consistent field arguments, it could
be the case that more than one filter of a given stream attempts to
write to the same path (derived either from $path or $path_func fields
of the filter) with the same writer type.  This won't work, so now
WriterFrontend objects are bound to the filter that instantiated them so
that we can warn about other filters attempting to write to the
conflicting writer/path and the write can be skipped.  Remote logs don't
appear to suffer the same issue due to pre-filtering.

Addresses #842.
This commit is contained in:
Jon Siwek 2012-07-25 12:20:12 -05:00
parent 91522e7836
commit 2fafadd930
6 changed files with 78 additions and 6 deletions
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2
src/logging/Manager.h
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@ -165,7 +165,7 @@ protected:
// Takes ownership of fields and info.
WriterFrontend* CreateWriter(EnumVal* id, EnumVal* writer, WriterBackend::WriterInfo* info,
int num_fields, const threading::Field* const* fields,
bool local, bool remote);
bool local, bool remote, const string& instantiating_filter="");
// Takes ownership of values..
bool Write(EnumVal* id, EnumVal* writer, string path,