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chore: Update ObservationHelper to allow sampling of spans #37345

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merged 1 commit into from
Nov 12, 2024

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@nidhi-nair nidhi-nair commented Nov 12, 2024

Description

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Summary by CodeRabbit

  • New Features

    • Enhanced tracing capabilities by ensuring spans are marked as sampled, improving data collection and reporting.
  • Bug Fixes

    • Maintained existing logic for trace ID checks, ensuring consistent behavior in span creation.

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coderabbitai bot commented Nov 12, 2024

Walkthrough

The changes in this pull request focus on the ObservationHelperImpl class, specifically modifying the createSpan method to include a line that sets the sampled property to true when building the TraceContext. This adjustment ensures that spans created are marked as sampled, affecting how tracing data is collected. The existing logic for checking TRACE_ID and SPAN_ID remains intact, and the methods startSpan and endSpan have not been altered.

Changes

File Change Summary
app/server/appsmith-server/src/main/java/com/appsmith/server/helpers/ObservationHelperImpl.java Modified createSpan method to set sampled property to true when building TraceContext.

Possibly related PRs

Suggested labels

skip-changelog, ok-to-test

Suggested reviewers

  • dvj1988

🎉 In the realm of code, a change so bright,
createSpan now samples, a guiding light.
With TraceContext set, the spans take flight,
Observability enhanced, all feels just right!
So let’s celebrate this code delight! 🎊


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@github-actions github-actions bot added the skip-changelog Adding this label to a PR prevents it from being listed in the changelog label Nov 12, 2024
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Actionable comments posted: 1

🧹 Outside diff range and nitpick comments (1)
app/server/appsmith-server/src/main/java/com/appsmith/server/helpers/ObservationHelperImpl.java (1)

Increased Trace Data Volume Due to Forced Sampling

The createSpan method now forces sampling on all spans, which overrides existing sampling configurations (commonConfig.isTracingDetail). This could lead to increased trace data volume.

  • Consider reverting to conditional sampling based on configuration.
🔗 Analysis chain

Line range hint 26-42: Verify impact on trace data volume

The createSpan method now forces sampling on all spans which could significantly increase the volume of trace data collected. Please verify:

  1. The impact on your tracing backend system's capacity
  2. Any cost implications of increased trace volume
  3. Whether selective sampling based on span name or context would be more appropriate
🏁 Scripts executed

The following scripts were executed for the analysis:

Script:

#!/bin/bash
# Search for other sampling configurations that might conflict
rg -l "sampled\(" | xargs rg "commonConfig.*isTracingDetail|sampling.*configuration"

# Look for other span creation points
ast-grep --pattern 'spanBuilder().setParent($$$).name($$$).start()'

Length of output: 274

📜 Review details

Configuration used: .coderabbit.yaml
Review profile: CHILL

📥 Commits

Reviewing files that changed from the base of the PR and between 91cf54b and fa83ba6.

📒 Files selected for processing (1)
  • app/server/appsmith-server/src/main/java/com/appsmith/server/helpers/ObservationHelperImpl.java (1 hunks)

@@ -32,6 +32,7 @@ public Span createSpan(String name) {
return Span.NOOP;
} else {
TraceContext traceContext = tracer.traceContextBuilder()
.sampled(true)
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🛠️ Refactor suggestion

Consider making sampling configurable instead of hardcoding

While forcing sampling on can help with debugging, it may impact performance in production. Consider making this configurable through CommonConfig similar to how isTracingDetail() is used.

Here's a suggested approach:

+ private final boolean forceSampling;
+
+ public ObservationHelperImpl(Optional<Tracer> tracer, CommonConfig commonConfig) {
+     this.commonConfig = commonConfig;
+     this.tracer = tracer.orElse(Tracer.NOOP);
+     this.forceSampling = commonConfig.isTracingDetail();
+ }

  TraceContext traceContext = tracer.traceContextBuilder()
-     .sampled(true)
+     .sampled(forceSampling)
      .traceId(contextMap.get(TRACE_ID))

Committable suggestion skipped: line range outside the PR's diff.

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Failed server tests

  • com.appsmith.server.helpers.GitUtilsTest#isRepoPrivate

@nidhi-nair nidhi-nair merged commit 8773bdd into release Nov 12, 2024
17 checks passed
@nidhi-nair nidhi-nair deleted the nidhi-nair-patch-1 branch November 12, 2024 14:13
github-actions bot pushed a commit to Zeral-Zhang/appsmith that referenced this pull request Nov 20, 2024
@coderabbitai coderabbitai bot mentioned this pull request Dec 5, 2024
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