This version can be pinned in stack with:hs-opentelemetry-exporter-otlp-1.0.0.0@sha256:5dad7c5bce3d83fcd560fdb2749aebcfab6b535bbee7f54f82ccdc390da3268b,2456
Spec: Retry-After now supports HTTP-date format in addition to delay-seconds.
Previous implementation only parsed integer seconds. Now handles both RFC 7231
Section 7.1.3 formats. Applied to all three signal exporters (Span, Metric, LogRecord).
Spec: https://opentelemetry.io/docs/specs/otlp/#failures
LogRecordExporter.forceFlush now returns FlushSuccess instead of ().
Aligns with the updated LogRecordExporter type in hs-opentelemetry-api.
gRPC transport wired for metrics and logs.
When the grpc Cabal flag is enabled and OTEL_EXPORTER_OTLP_PROTOCOL=grpc,
all three signals (traces, metrics, logs) now use gRPC transport.
Previously only traces supported gRPC.
Concurrent export configuration.
New OTEL_EXPORTER_OTLP_CONCURRENT_EXPORTS env var and
otlpConcurrentExports config field (default 1).
Fix: droppedAttributesCount was reporting stored count, not dropped count.
All three OTLP exporters (Span, Metric, LogRecord) used getCount instead of
getDropped for span attributes, event attributes, link attributes, resource
attributes, and scope attributes. Now uses getDropped everywhere.
Fix: Accept-Encoding header set to protobuf MIME type. Changed to Accept
header, which is the correct HTTP header for content-type negotiation.
Fix: Unknown n severity number could crash with toEnum on out-of-range values.
Now falls back to SEVERITY_NUMBER_UNSPECIFIED for values outside 0–24.
Fix: Span.flags and Link.flags proto fields never set. The sampled
bit in W3C trace flags was always 0 in exported OTLP spans and links, even
when the span was sampled. Now populates flags from traceFlagsValue on
both Span and Span.Link messages (matching the existing log exporter).
OTLP span exporter: set schema_url on ResourceSpans and ScopeSpans, set scope attributes and droppedAttributesCount
OpenTelemetry.Exporter.OTLP barrel module now re-exports all three signals (Span, Metric, LogRecord)
Implement OpenTelemetry.Exporter.OTLP.LogRecord: full OTLP HTTP/Protobuf log exporter with retry, compression, and severity/AnyValue/tracing-context serialization
Use startTimeUnixNano from data points instead of hardcoded 0
Comprehensive protobuf round-trip tests for all metric types
OTLP metrics: exemplars on number and histogram data points; exponential histogram messages; aggregation temporality from export model.
