feat!: integrate obfuscation to trace exporter [APMSP-2764]#1819
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feat!: integrate obfuscation to trace exporter [APMSP-2764]#1819
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Eldolfin
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Codecov Report❌ Patch coverage is Additional details and impacted files@@ Coverage Diff @@
## main #1819 +/- ##
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+ Coverage 71.21% 71.41% +0.19%
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Files 414 425 +11
Lines 65963 67092 +1129
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+ Hits 46974 47911 +937
- Misses 18989 19181 +192
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| client_side_stats.store(Arc::new(StatsComputationStatus::Enabled { | ||
| stats_concentrator: stats_concentrator.clone(), | ||
| cancellation_token: cancellation_token.clone(), | ||
| obfuscation_active: new_obfuscation_active, | ||
| })); |
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When /info changes obfuscation support, this branch only updates client_side_stats and leaves the running StatsExporter untouched. The exporter’s obfuscation_active flag is fixed at construction time in create_and_start_stats_worker, so it keeps sending the old datadog-obfuscation-version header state even after process_traces_for_stats switches to the new obfuscation behavior. In the toggle scenario (e.g., agent enables obfuscation after startup), stats payload resources and header version can diverge, which makes the agent interpret stats under the wrong format/version.
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Pull request overview
This PR integrates obfuscation support into the trace exporter for client-side stats computation. It enables SDKs to obfuscate spans before sending them to the agent when the agent supports it, reducing data transfer between SDKs and the agent.
Changes:
- Adds
obfuscate_resource_for_statsfunction to obfuscate resource names for SQL, Redis, Cassandra, and Valkey spans - Implements obfuscation state tracking through the stats computation lifecycle
- Creates an
ObfuscatedStatSpanwrapper to provide obfuscated resources to the stats concentrator without modifying original spans - Adds HTTP header
datadog-obfuscation-version: 1when obfuscation is active - Adds schema field for agent's obfuscation version support
- Fixes a typo in documentation ("will" → "while")
Reviewed changes
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Show a summary per file
| File | Description |
|---|---|
| libdd-trace-stats/src/span_concentrator/mod.rs | Exports the stat_span module publicly for use in the stats exporter |
| libdd-trace-obfuscation/src/obfuscate.rs | Adds obfuscate_resource_for_stats function with comprehensive tests for SQL, Redis, Cassandra, and Valkey obfuscation |
| libdd-data-pipeline/src/trace_exporter/stats.rs | Implements obfuscation state management and applies obfuscation to spans during stats computation |
| libdd-data-pipeline/src/trace_exporter/mod.rs | Passes obfuscation state through the stats handler call chain |
| libdd-data-pipeline/src/stats_exporter.rs | Adds obfuscation header to HTTP requests when obfuscation is active, includes test coverage |
| libdd-data-pipeline/src/agent_info/schema.rs | Adds obfuscation_version field to capture agent capabilities |
| libdd-data-pipeline/Cargo.toml | Adds dependency on libdd-trace-obfuscation |
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…scation feature flag
…tate between StatsExporter and stats enum
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Eldolfin
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What does this PR do?
Integrate the work that has been done on obfuscate_span into the trace exporter
Motivation
Let the sdks obfuscate spans before sending them to the agent when possible, reducing the amount of data transfered from the sdks to the agent.
Additional Notes
Anything else we should know when reviewing?
How to test the change?
TODO
obfuscate more than just sql and redisnot for stats