middleware_dart_opentelemetry 1.0.5

Middleware.io's OpenTelemetry SDK for Dart

Changelog

All notable changes to this project will be documented in this file.

The format is based on Keep a Changelog, and this project adheres to Semantic Versioning.

0.9.3 - 2025-10-25

Added

• New W3CTracePropagator
• Defined all 74 env var constants

Fixed

• Fixed env vars on Flutter web
• Fixed service.name, service.version, now from OTEL_RESOURCE_ATTRIBUTES

Removed

• OTEL_SERVICE_VERSION, not in the spec

0.9.2 - 2025-10-12

• Default to INFO OTel logging.

0.9.1 - 2025-10-04

• Bumped API to 0.8.8 to fix logging.

0.9.0 - 2025-10-04

• Added support for OTEL_EXPORTER_OTLP_HEADERS for http and grpc exporters for trace and metrics
• Added support for all other exporter env vars
• Documented OTEL_* env var usage, added grafana examples
• Certificates env vars may not work yet tests skipped.

0.8.7 - 2025-09-29

• Upgraded to api 0.8.7. Upgraded all dependencies including grpc to 4.1
• Respected all OTel env vars when no explicit values are specified, uses OTEL_CONSOLE_EXPORTER
• Fixed default export, uses http/protobuf by default, not grpc
• Fixed issue with creation of the grpc exporter
• ConsoleExporter now only created on env vars or explicity
• Minor, doc, dart format, improved .gitignore, removed generated mistakenly committed

0.8.6 - 2025-09-24

• Minor, cleaning, format, doc.

0.8.5 - 2025-06-14

• prep for wondrous otel demo, upgrade to api 0.8.3, span toString

0.8.4 - 2025-06-06

• fix: Issue #3 - Fixed Metric generics for Histogram.
• chore: All 445 tests pass, 12 ignored, 0 fail, no crashes, thoroughly applied OTel.shutdown in test tearDowns.

0.8.3 - 2025-06-04

• fix: Issue 4, lack of span export

0.8.2 - 2025-05-06

• README.md updates

0.8.1 - 2025-05-06

• README.md updates

0.8.0 - 2025-05-01

Added

• Initial public release of the OpenTelemetry SDK for Dart
• Complete implementation of the OpenTelemetry API
• Full tracing implementation with span processors
• Multiple exporters: OTLP (gRPC and HTTP), Console, Zipkin
• Resource providers for service information
• Sampler implementations: AlwaysOn, AlwaysOff, TraceIdRatio, ParentBased
• Context propagation: W3C Trace Context, W3C Baggage, Composite
• Batch processing with configurable parameters
• Comprehensive test suite
• Complete examples for various use cases

Compatibility

• Implements OpenTelemetry SDK specification v1.0.0-rc3
• Requires opentelemetry_api: ^0.8.0
• Compatible with OpenTelemetry Protocol (OTLP) v0.18.0