otel_http 0.3.0

OpenTelemetry instrumentation for `package:http`. Wraps any `http.Client` to emit a CLIENT-kind span per request with HTTP semconv attributes and W3C trace-context injection.

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.

0.3.0 - 2026-10-11

Changed

• Requires dartastic_opentelemetry_api >=1.0.0-rc.4 <1.0.0-rc.5.
• Context is propagated with the app's configured propagators (OTelAPI.textMapPropagator: W3C trace context and baggage by default, OTEL_PROPAGATORS to change them) instead of a fixed W3C propagator.
• Breaking: depends on dartastic_opentelemetry_api only, no longer on the SDK. The application chooses and initializes the OpenTelemetry SDK. Parameters and fields typed with SDK classes now use the API types (APITracer, APISpan, APILogger, ...); SDK instances are still accepted wherever an API type is expected.

0.2.0 - 2026-08-10

Changed

• Semantic conventions updated to the current OTel registry; no deprecated attribute keys are emitted (only the current http.request.method, never the legacy http.method).
• Dependency floors raised to dartastic_opentelemetry ^1.1.0-beta.12 and dartastic_opentelemetry_api ^1.0.0-rc.1. The previous floors declared compatibility with API versions that predate the semconv enums this package uses and could not actually resolve-and-compile.
• repository URL corrected to the canonical Dartastic org casing so pub.dev repository verification succeeds.

Added

• ignoreUrlPatterns — URL patterns (substring or RegExp) excluded from instrumentation entirely (no span, no header injection), e.g. telemetry-upload endpoints — closes the self-instrumentation double-count trap for exporters sharing the client. Zone-scoped suppression remains the call-site tool.

• OTelHttpClient — a http.BaseClient that wraps another http.Client and emits a CLIENT-kind span per request with the HTTP semantic-convention attributes set (http.request.method, url.full, url.scheme, url.path, url.query, server.address, server.port, http.request.body.size, user_agent.original, http.response.status_code, http.response.body.size).

• W3C traceparent / tracestate / baggage headers injected into outbound requests so downstream services join the same trace.

• 4xx / 5xx responses flip span status to Error. Thrown exceptions trigger recordException (with stack trace) and setStatus(Error), in OTel-spec order, with error.type set to the exception's runtime class.

• URL userInfo (https://alice:secret@host/...) is redacted in url.full per the OTel HTTP semconv guidance.

• spanNameBuilder constructor option for callers that know a URL template (recommended span name is {METHOD} {url-template}).

• runWithoutHttpInstrumentation / runWithoutHttpInstrumentationAsync — zone-scoped suppression helpers. OTelHttpClient.send checks a zone flag at the top of every call and skips span creation AND header injection when set. Backs the self-recursion guarantee: the SDK's OTLP/HTTP exporter uses package:http itself, so wrapping an exporter call in this helper prevents the export-creates-span-creates- export loop. Matches the pattern used by dartastic_grpc_otel.

• 10 unit tests covering happy path, header injection, 4xx, 5xx, transport exception, userinfo redaction, body size, custom span name, parent-span inheritance, and the suppression scope. 1 integration test polling an OTLP backend round-trip.

• Targets http: ^1.0.0.