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upstream: trigger original dst clean only when hosts are there#6152

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mattklein123 merged 4 commits intoenvoyproxy:masterfrom
ramaraochavali:fix/original_dst_log
Mar 5, 2019
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upstream: trigger original dst clean only when hosts are there#6152
mattklein123 merged 4 commits intoenvoyproxy:masterfrom
ramaraochavali:fix/original_dst_log

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@ramaraochavali ramaraochavali commented Mar 2, 2019

Description: The log line Cleaning up stale original dst hosts is triggering quite often when upstream log is enabled even there are no hosts. My intention was to control this log line, but I think it does not harm to guard whole cleanup logic with this condition.
Risk Level: Low
Testing: Low
Docs Changes: N/A
Release Notes: N/A

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original dst log line
cfee835 
Signed-off-by: Rama Chavali <[email protected]>
venilnoronha
venilnoronha reviewed Mar 2, 2019
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I'd refrain from this change because this log, although frequent, signals that the cleanup operation had started. Would it make sense to rather drop the log level to trace and update the message?

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ramaraochavali commented Mar 3, 2019

@venilnoronha That was my original thought - but then looking at the log lines in the loop, if we drop this to trace and leave other two log lines in debug they seem to come out of context. But I agree we will loose the information that it is running - Are you OK, making all three log lines to trace? I am OK changing it like that.

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change to trace
58625f3 
Signed-off-by: Rama Chavali <[email protected]>
@ramaraochavali ramaraochavali changed the title upstream: trigger original dst clean only when hosts are there upstream: change original dst cleanup log lines to trace Mar 3, 2019
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ramaraochavali commented Mar 3, 2019

@venilnoronha I went ahead and changed all three log lines to trace. LMK, if you think there is a better alternative.

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venilnoronha commented Mar 3, 2019

Can we keep your previous logic (and the 3 debug logs) and add an additional trace log outside the if condition?

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ramaraochavali commented Mar 3, 2019 •
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I see. I can do that.
@venilnoronha done. PTAL

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add additional trace
b42c079 
Signed-off-by: Rama Chavali <[email protected]>
@ramaraochavali ramaraochavali changed the title upstream: change original dst cleanup log lines to trace upstream: trigger original dst clean only when hosts are there Mar 3, 2019
venilnoronha
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source/common/upstream/original_dst_cluster.cc Outdated
} else {
ENVOY_LOG(debug, "Removing stale host {}.", host->address()->asString());
to_be_removed.emplace_back(host);
ENVOY_LOG(trace, "stale original dst hosts cleanup triggered");
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nit: s/stale/Stale
nit: s/triggered/triggered.

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bce1701 
Signed-off-by: Rama Chavali <[email protected]>
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ramaraochavali commented Mar 3, 2019

/retest

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repokitteh-read-only bot commented Mar 3, 2019

🔨 rebuilding ci/circleci: clang_tidy (failed build)

🐱

Caused by: a #6152 (comment) was created by @ramaraochavali.

see: more, trace.

venilnoronha
venilnoronha approved these changes Mar 3, 2019
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LGTM. Thanks!

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dio commented Mar 3, 2019

@snowp could you help on reviewing this?

@dio dio assigned snowp Mar 3, 2019
snowp
snowp approved these changes Mar 4, 2019
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This LGTM, thanks

@mattklein123 mattklein123 merged commit 0b0c57b into envoyproxy:master Mar 5, 2019
fredlas pushed a commit to fredlas/envoy that referenced this pull request Mar 5, 2019
@ramaraochavali @fredlas
upstream: trigger original dst clean only when hosts are there (envoy…
797b9a5 
…proxy#6152)

Signed-off-by: Rama Chavali <[email protected]>
Signed-off-by: Fred Douglas <[email protected]>
@ramaraochavali ramaraochavali deleted the fix/original_dst_log branch March 6, 2019 02:36
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