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Update specification to include development profiles #582

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merged 6 commits into from
Sep 16, 2024
Merged

Update specification to include development profiles #582

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1928062
add profiles to the OTLP specification
dmathieu Sep 10, 2024
1e31bed
update document status
dmathieu Sep 10, 2024
eec0ed9
fix service link
dmathieu Sep 10, 2024
7fca576
Update docs/specification.md
dmathieu Sep 10, 2024
071305d
rename v1experimental API path to v1development
dmathieu Sep 11, 2024
9338c46
Merge branch 'main' into profiles-spec
dmathieu Sep 16, 2024
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50 changes: 30 additions & 20 deletions docs/specification.md
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Original file line number Diff line number Diff line change
Expand Up @@ -15,7 +15,10 @@ cascade:

# OpenTelemetry Protocol Specification

**Status**: [Stable](https://github.com/open-telemetry/opentelemetry-specification/blob/main/specification/document-status.md)
**Status**:

* [Stable](https://github.com/open-telemetry/opentelemetry-specification/blob/main/specification/document-status.md) for the trace, metric and log signals.
* [Development](https://github.com/open-telemetry/opentelemetry-specification/blob/main/specification/document-status.md) for the profiles signal.

The OpenTelemetry Protocol (OTLP) specification describes the encoding, transport,
and delivery mechanism of telemetry data between telemetry sources, intermediate
Expand Down Expand Up @@ -92,7 +95,8 @@ telemetry data using unary requests using
[Export*ServiceRequest](https://github.com/open-telemetry/opentelemetry-proto)
messages ([ExportLogsServiceRequest](../opentelemetry/proto/collector/logs/v1/logs_service.proto) for logs,
[ExportMetricsServiceRequest](../opentelemetry/proto/collector/metrics/v1/metrics_service.proto) for metrics,
[ExportTraceServiceRequest](../opentelemetry/proto/collector/trace/v1/trace_service.proto) for traces).
[ExportTraceServiceRequest](../opentelemetry/proto/collector/trace/v1/trace_service.proto) for traces,
[ExportProfilesServiceRequest](../opentelemetry/proto/collector/profiles/v1experimental/profiles_service.proto) for profiles).
The client continuously sends a sequence of requests to the server and expects
to receive a response to each request:

Expand Down Expand Up @@ -165,10 +169,10 @@ If the server receives an empty request (a request that does not carry
any telemetry data) the server SHOULD respond with success.

On success, the server response MUST be a
[Export\<signal>ServiceResponse](../opentelemetry/proto/collector)
message (`ExportTraceServiceResponse` for traces,
`ExportMetricsServiceResponse` for metrics and
`ExportLogsServiceResponse` for logs).
[Export\<signal>ServiceResponse](../opentelemetry/proto/collector) message
(`ExportTraceServiceResponse` for traces, `ExportMetricsServiceResponse` for
metrics, `ExportLogsServiceResponse` for logs and
`ExportProfilesServiceResponse` for profiles).

The server MUST leave the `partial_success` field unset
in case of a successful response.
Expand All @@ -182,11 +186,12 @@ server response MUST be the same
message as in the [Full Success](#full-success) case.

Additionally, the server MUST initialize the `partial_success` field
(`ExportTracePartialSuccess` message for traces,
`ExportMetricsPartialSuccess` message for metrics and
`ExportLogsPartialSuccess` message for logs), and it MUST set the respective
`rejected_spans`, `rejected_data_points` or `rejected_log_records` field with
the number of spans/data points/log records it rejected.
(`ExportTracePartialSuccess` message for traces, `ExportMetricsPartialSuccess`
message for metrics, `ExportLogsPartialSuccess` message for logs and
`ExportProfilesPartialSuccess` for profiles), and it MUST set the respective
`rejected_spans`, `rejected_data_points`, `rejected_log_records` or
`rejected_profiles` field with the number of spans/data points/log
records/profiles it rejected.

The server SHOULD populate the `error_message` field with a human-readable
error message in English. The message should explain why the
Expand Down Expand Up @@ -456,6 +461,10 @@ the request body is a Protobuf-encoded `ExportMetricsServiceRequest` message.
The default URL path for requests that carry log data is `/v1/logs` and the
request body is a Protobuf-encoded `ExportLogsServiceRequest` message.

The default URL path for requests that carry profiling data is
`/v1development/profiles` and the request body is a Protobuf-encoded
`ExportProfilesServiceRequest` message.

The client MAY gzip the content and in that case MUST include
"Content-Encoding: gzip" request header. The client MAY include
"Accept-Encoding: gzip" request header if it can receive gzip-encoded responses.
Expand Down Expand Up @@ -487,11 +496,12 @@ server.
If the server receives an empty request (a request that does not carry
any telemetry data) the server SHOULD respond with success.

On success, the server MUST respond with `HTTP 200 OK`. The response body MUST be
a Protobuf-encoded [Export\<signal>ServiceResponse](../opentelemetry/proto/collector)
message (`ExportTraceServiceResponse` for traces,
`ExportMetricsServiceResponse` for metrics and
`ExportLogsServiceResponse` for logs).
On success, the server MUST respond with `HTTP 200 OK`. The response body MUST
be a Protobuf-encoded
[Export\<signal>ServiceResponse](../opentelemetry/proto/collector) message
(`ExportTraceServiceResponse` for traces, `ExportMetricsServiceResponse` for
metrics, `ExportLogsServiceResponse` for logs and
`ExportProfilesServiceResponse` for profiles).

The server MUST leave the `partial_success` field unset
in case of a successful response.
Expand All @@ -505,10 +515,10 @@ server MUST respond with `HTTP 200 OK`. The response body MUST be the same
message as in the [Full Success](#full-success-1) case.

Additionally, the server MUST initialize the `partial_success` field
(`ExportTracePartialSuccess` message for traces,
`ExportMetricsPartialSuccess` message for metrics and
`ExportLogsPartialSuccess` message for logs), and it MUST set the respective
`rejected_spans`, `rejected_data_points` or `rejected_log_records` field with
(`ExportTracePartialSuccess` message for traces, `ExportMetricsPartialSuccess`
message for metrics, `ExportLogsPartialSuccess` message for logs and
`ExportProfilesPartialSuccess` for profiles), and it MUST set the respective
`rejected_spans`, `rejected_data_points`, `rejected_log_records` or `rejected_profiles` field with
the number of spans/data points/log records it rejected.

The server SHOULD populate the `error_message` field with a human-readable
Expand Down
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