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EventHandler: Use telemetry framework for EventHandler.call_count

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Put the IntCounter into a std::optional rather than initializing
it at EventHandler construction time as that will currently expose
a time series per event handler through the Prometheus API.
This commit is contained in:
Arne Welzel 2023-02-15 18:04:21 +01:00
parent a40025b82d
commit 56a8b99965
4 changed files with 42 additions and 3 deletions
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21
testing/btest/scripts/base/frameworks/telemetry/event-handler-invocations.zeek Normal file
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# @TEST-DOC: Query for zeek event-handler-invocations metrics counting number of times handlers were called.
# Note compilable to C++ due to globals being initialized to a record that
# has an opaque type as a field.
# @TEST-REQUIRES: test "${ZEEK_USE_CPP}" != "1"
# @TEST-EXEC: zcat <$TRACES/echo-connections.pcap.gz | zeek -b -Cr - %INPUT > out
# @TEST-EXEC: btest-diff out
# @TEST-EXEC-FAIL: test -f reporter.log
@load base/frameworks/telemetry
event zeek_done() &priority=-100
{
local ms = Telemetry::collect_metrics("zeek", "event-handler-invocations");
for ( _, m in ms )
{
if ( /zeek_.*|connection_.*/ in cat(m$labels))
print m$opts$prefix, m$opts$name, m$labels, m$count_value;
}
}