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Update `otel.status_code` mapping with latest version of spec. (#41) 

Co-authored-by: James Hinshelwood <james.hinshelwood@bigpayme.com>
Signed-off-by: James Hinshelwood <jameshinshelwood1@gmail.com>

Co-authored-by: James Hinshelwood <james.hinshelwood@bigpayme.com>
pull/46/head
James Hinshelwood 2022-05-17 10:25:58 +01:00 committed by GitHub
parent 8f6af94914
commit 762007b524
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2 changed files with 14 additions and 18 deletions
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3
reqwest-tracing/CHANGELOG.md
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@ -6,6 +6,9 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
## [Unreleased]
### Fixed
- Fix how we set the OpenTelemetry span status, based on the HTTP response status.
# [0.2.2] - 2022-04-21
### Fixed
- Opentelemetry context is now propagated when the request span is disabled.

29
reqwest-tracing/src/middleware.rs
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@ -95,28 +95,21 @@ fn get_header_value(key: &str, headers: &HeaderMap) -> String {
format!("{:?}", headers.get(key).unwrap_or(header_default)).replace('"', "")
}
/// HTTP Mapping <https://github.com/open-telemetry/opentelemetry-specification/blob/c4b7f4307de79009c97b3a98563e91fee39b7ba3/work_in_progress/opencensus/HTTP.md#status>
// | HTTP code | Span status code |
// |-------------------------|-----------------------|
// | 100...299 | `Ok` |
// | 3xx redirect codes | `DeadlineExceeded` in case of loop (see above) [1], otherwise `Ok` |
// | 401 Unauthorized ⚠ | `Unauthenticated` ⚠ (Unauthorized actually means unauthenticated according to [RFC 7235][rfc-unauthorized]) |
// | 403 Forbidden | `PermissionDenied` |
// | 404 Not Found | `NotFound` |
// | 429 Too Many Requests | `ResourceExhausted` |
// | Other 4xx code | `InvalidArgument` [1] |
// | 501 Not Implemented | `Unimplemented` |
// | 503 Service Unavailable | `Unavailable` |
// | 504 Gateway Timeout | `DeadlineExceeded` |
// | Other 5xx code | `InternalError` [1] |
// | Any status code the client fails to interpret (e.g., 093 or 573) | `UnknownError` |
/// HTTP Mapping <https://github.com/open-telemetry/opentelemetry-specification/blob/main/specification/trace/semantic_conventions/http.md#status>
///
/// Maps the the http status to an Opentelemetry span status following the the specified convention above.
fn get_span_status(request_status: RequestStatusCode) -> Option<&'static str> {
match request_status.as_u16() {
100..=399 => Some("OK"),
400..=599 => Some("ERROR"),
_ => None,
// Span Status MUST be left unset if HTTP status code was in the 1xx, 2xx or 3xx ranges, unless there was
// another error (e.g., network error receiving the response body; or 3xx codes with max redirects exceeded),
// in which case status MUST be set to Error.
100..=399 => None,
// For HTTP status codes in the 4xx range span status MUST be left unset in case of SpanKind.SERVER and MUST be
// set to Error in case of SpanKind.CLIENT.
400..=499 => Some("ERROR"),
// For HTTP status codes in the 5xx range, as well as any other code the client failed to interpret, span
// status MUST be set to Error.
_ => Some("ERROR"),
}
}