limit response body size for OTLP HTTP exporters - #8108
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pellared
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March 30, 2026 12:43
pellared
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March 30, 2026 12:43
Codecov Report✅ All modified and coverable lines are covered by tests. Additional details and impacted files@@ Coverage Diff @@
## main #8108 +/- ##
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Coverage 81.7% 81.8%
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Files 308 308
Lines 23691 23709 +18
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+ Hits 19374 19399 +25
+ Misses 3934 3932 -2
+ Partials 383 378 -5
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dmathieu
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Mar 30, 2026
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ptal done. this matches the issue i reported: response-body reads for diagnostics are now bounded instead of copied unbounded into memory. please just ensure tests cover success + error paths, including chunked and gzip responses, across trace/metric/log exporters. from my side, this looks like the right fix. |
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XSAM
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Release issue: #8127 ## Added - Add `IsRandom` and `WithRandom` on `TraceFlags`, and `IsRandom` on `SpanContext` in `go.opentelemetry.io/otel/trace` for [W3C Trace Context Level 2 Random Trace ID Flag](https://www.w3.org/TR/trace-context-2/#random-trace-id-flag) support. (#8012) - Add service detection with `WithService` in `go.opentelemetry.io/otel/sdk/resource`. (#7642) - Add `DefaultWithContext` and `EnvironmentWithContext` in `go.opentelemetry.io/otel/sdk/resource` to support plumbing `context.Context` through default and environment detectors. (#8051) - Support attributes with empty value (`attribute.EMPTY`) in `go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc`. (#8038) - Support attributes with empty value (`attribute.EMPTY`) in `go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetricgrpc`. (#8038) - Support attributes with empty value (`attribute.EMPTY`) in `go.opentelemetry.io/otel/exporters/otlp/otlplog/otlploggrpc`. (#8038) - Support attributes with empty value (`attribute.EMPTY`) in `go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracehttp`. (#8038) - Support attributes with empty value (`attribute.EMPTY`) in `go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetrichttp`. (#8038) - Support attributes with empty value (`attribute.EMPTY`) in `go.opentelemetry.io/otel/exporters/otlp/otlplog/otlploghttp`. (#8038) - Support attributes with empty value (`attribute.EMPTY`) in `go.opentelemetry.io/otel/sdk/metric/metricdata/metricdatatest`. (#8038) - Add support for per-series start time tracking for cumulative metrics in `go.opentelemetry.io/otel/sdk/metric`. Set `OTEL_GO_X_PER_SERIES_START_TIMESTAMPS=true` to enable. (#8060) - Add `WithCardinalityLimitSelector` for metric reader for configuring cardinality limits specific to the instrument kind. (#7855) ## Changed - Introduce the `EMPTY` Type in `go.opentelemetry.io/otel/attribute` to reflect that an empty value is now a valid value, with `INVALID` remaining as a deprecated alias of `EMPTY`. (#8038) - Refactor slice handling in `go.opentelemetry.io/otel/attribute` to optimize short slice values with fixed-size fast paths. (#8039) - Improve performance of span metric recording in `go.opentelemetry.io/otel/sdk/trace` by returning early if self-observability is not enabled. (#8067) - Improve formatting of metric data diffs in `go.opentelemetry.io/otel/sdk/metric/metricdata/metricdatatest`. (#8073) ## Deprecated - Deprecate `INVALID` in `go.opentelemetry.io/otel/attribute`. Use `EMPTY` instead. (#8038) ## Fixed - Return spec-compliant `TraceIdRatioBased` description. This is a breaking behavioral change, but it is necessary to make the implementation [spec-compliant](https://opentelemetry.io/docs/specs/otel/trace/sdk/#traceidratiobased). (#8027) - Fix a race condition in `go.opentelemetry.io/otel/sdk/metric` where the lastvalue aggregation could collect the value 0 even when no zero-value measurements were recorded. (#8056) - Limit HTTP response body to 4 MiB in `go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracehttp` to mitigate excessive memory usage caused by a misconfigured or malicious server. Responses exceeding the limit are treated as non-retryable errors. (#8108) - Limit HTTP response body to 4 MiB in `go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetrichttp` to mitigate excessive memory usage caused by a misconfigured or malicious server. Responses exceeding the limit are treated as non-retryable errors. (#8108) - Limit HTTP response body to 4 MiB in `go.opentelemetry.io/otel/exporters/otlp/otlplog/otlploghttp` to mitigate excessive memory usage caused by a misconfigured or malicious server. Responses exceeding the limit are treated as non-retryable errors. (#8108) - `WithHostID` detector in `go.opentelemetry.io/otel/sdk/resource` to use full path for `kenv` command on BSD. (#8113) - Fix missing `request.GetBody` in `go.opentelemetry.io/otel/exporters/otlp/otlplog/otlploghttp` to correctly handle HTTP2 GOAWAY frame. (#8096) --------- Co-authored-by: Tyler Yahn <MrAlias@users.noreply.github.com>
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Per open-telemetry/opentelemetry-proto#781