• 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.

• 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

• Minor, cleaning, format, doc.

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

• 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.

• fix: Issue 4, lack of span export

• README.md updates

• README.md updates

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