APMLP-350 fix crash in crashtracker when agent url is an ipv6 address #4237
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Datadog ReportBranch report: ✅ 0 Failed, 22121 Passed, 1477 Skipped, 6m 5.16s Total Time |
Codecov ReportAll modified and coverable lines are covered by tests ✅
Additional details and impacted files@@ Coverage Diff @@
## master #4237 +/- ##
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Coverage 97.74% 97.75%
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Files 1355 1355
Lines 82333 82365 +32
Branches 4226 4230 +4
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+ Hits 80477 80516 +39
+ Misses 1856 1849 -7 ☔ View full report in Codecov by Sentry. |
BenchmarksBenchmark execution time: 2024-12-19 15:00:58 Comparing candidate commit 20aac55 in PR branch Found 1 performance improvements and 0 performance regressions! Performance is the same for 30 metrics, 2 unstable metrics. scenario:tracing - Propagation - Trace Context
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Strech
reviewed
Dec 19, 2024
ivoanjo
reviewed
Dec 19, 2024
ivoanjo
added a commit
that referenced
this pull request
Jan 2, 2025
**What does this PR do?** This PR builds atop #4237 and fixes a similar-ish issue in the profiler caused by the same mishandling of ipv6 addresses. In particular, when provided with an ipv6 address in the agent url, the profiler would fail with an exception: ``` $ env DD_AGENT_HOST=2001:db8:1::2 DD_PROFILING_ENABLED=true \ bundle exec ddprofrb exec ruby -e "sleep 2" dd-trace-rb/lib/datadog/profiling/http_transport.rb:27:in `initialize': Failed to initialize transport: invalid authority (ArgumentError) ``` **Motivation:** Luckily we didn't have any customers using this, as it fails immediately and loudly, but it's still a bug on a configuration that should be supported. **Additional Notes:** Since we had similar buggy logic copy-pasted in crashtracking and profiling (crashtracking had been fixed in #4237) I chose to extract out the relevant logic into the `AgentSettings` class, so that both can reuse it. **How to test the change?** I've added unit test coverage for this issue to profiling, and the snippet above can be used to end-to-end test it's working fine. Here's how it looks on my machine now: ``` E, [2025-01-02T17:32:32.398756 #359317] ERROR -- datadog: [datadog] (dd-trace-rb/lib/datadog/profiling/http_transport.rb:68:in `export') Failed to report profiling data (agent: http://[2001:db8:1::2]:8126/): failed ddog_prof_Exporter_send: error trying to connect: tcp connect error: Network is unreachable (os error 101): tcp connect error: Network is unreachable (os error 101): Network is unreachable (os error 101) ``` E.g. we correctly try to connect to the dummy address, and fail :) (Note: The error message is a bit ugly AND repeats itself a bit. That's being tracked separately in DataDog/libdatadog#283 )
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What does this PR do?
Motivation:
Crash reported by system tests
Change log entry
Yes: fix a crash in crashtracker when agent hostname is an IPv6 address
Additional Notes:
The code that this PR touches may have more missing error handling (of other situations), I didn't check it exhaustively.
How to test the change?
Unit tests are added.
I also wrote DataDog/libdatadog#809 for libdatadog to verify it works OK with our provided input (which it does).