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Move test output from stdout to stderr and enable logging to stderr.
This is in preparation for the next patch, which will add a new log
message when osmo_stat_item_get_next() skips a value.
Related: SYS#4877
Change-Id: Ie0eaec2f93ac6859397a6bfca45039fdcc27cb9e
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We should never report multiple values for a metric. It is confusing for
the log reporter and wrong for statsd. Statsd will record only one value,
but will it be the first, last, ...?
This can happen if an osmo_stat_item changes more than once within the
same reporting interval.
With this patch only one aggregate value is sent to the log reporters.
The value reported is the maximum during this interval. Other
aggregations could be possible (min, last), but reporting a (useful)
average is not because the values don't include a timestamp and most
osmo_stat_items change at unregular intervals.
Change-Id: I366ab1c66f4ae6363111ea4e41b66b7d5bcade9c
Related: SYS#4877
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In Change-Id Ifc6ac824f5dae9a848bb4a5d067c64a69eb40b56 we introduce
name mangling to replace any '.' in counter (group) names to be
converted to ':'. Let's test for this functionality explicitly as part
of the stats_test.
Change-Id: Ie35682aa79526e2ffeab6995cd640b7847d855bf
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As rate counters are automatically exposed on the CTRL interface,
we need to make sure they don't contain special characters such as '.'
which are not permitted/supported by CTRL.
In order to be able to run old versions of osmocom programs with
libosmocore versions after this commit, we introduce some special
name mangling: Any '.' in the names are replaced with ':' during
counter group registration, if valid identifiers can be obtained
this way.
Change-Id: Ifc6ac824f5dae9a848bb4a5d067c64a69eb40b56
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This tests uses a dedicated test reported to check several aspects of
the value reporting.
- addition/removal of stats reporter
- addition/removal of counters/items
- setting of max_class
- initial value flush
- updating single counters/items
- reporter retrieval
- enable/disable
Sponsored-by: On-Waves ehf
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This commit adds instrumentation function to gather measurement
and statistical values similar to counter groups.
Multiple values can be stored per item, which can be retrieved in
FIFO order. Getting values from the item does not modify its state to
allow for multiple independant backends (e.g. VTY and statd).
When a new value is set, the oldest value gets silently overwritten.
Lost values are skipped when getting values from the item.
Sponsored-by: On-Waves ehf
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