stat_sinks: add OTLP/HTTP exporter to OpenTelemetry metrics sink by codefromthecrypt · Pull Request #43001 · envoyproxy/envoy

codefromthecrypt · 2026-01-14T12:13:50Z

Additional Description: Adds HTTP transport support to the OpenTelemetry metrics sink, complementing #42445 (OTLP/HTTP access logs) and #29207 (OTLP/HTTP tracing). This enables direct OTLP metrics export to backends that only accept HTTP (Dynatrace, Datadog, Elastic), without requiring an intermediate collector sidecar.

Also refactors the exporter to use an abstract base class:

Add http_service field to protocol_specifier oneof for OTLP/HTTP transport
Create abstract OtlpMetricsExporter base class
Rename OpenTelemetryGrpcSink to OpenTelemetrySink with generic exporter

Risk Level: Low (new optional feature, backward compatible)

Testing: Unit tests, integration test, manual testing with OTel collector

Docs Changes: Proto documentation updated

Release Notes: Added

Example Configuration (OTLP/HTTP)

stats_sinks:
- name: envoy.stat_sinks.open_telemetry
  typed_config:
    "@type": type.googleapis.com/envoy.extensions.stat_sinks.open_telemetry.v3.SinkConfig
    http_service:
      http_uri:
        uri: "http://localhost:4318/v1/metrics"
        cluster: otel_collector
        timeout: 1s
    report_counters_as_deltas: true
    report_histograms_as_deltas: true
    emit_tags_as_attributes: true
    use_tag_extracted_name: true

Example Configuration (OTLP/gRPC - unchanged)

stats_sinks:
- name: envoy.stat_sinks.open_telemetry
  typed_config:
    "@type": type.googleapis.com/envoy.extensions.stat_sinks.open_telemetry.v3.SinkConfig
    grpc_service:
      envoy_grpc:
        cluster_name: otel_collector
    report_counters_as_deltas: true

Screenshot of metrics from http transport in otel-tui

repokitteh-read-only · 2026-01-14T12:13:57Z

As a reminder, PRs marked as draft will not be automatically assigned reviewers,
or be handled by maintainer-oncall triage.

Please mark your PR as ready when you want it to be reviewed!

🐱

Caused by: #43001 was opened by codefromthecrypt.

see: more, trace.

repokitteh-read-only · 2026-01-14T12:14:03Z

CC @envoyproxy/api-shepherds: Your approval is needed for changes made to (api/envoy/|docs/root/api-docs/).
envoyproxy/api-shepherds assignee is @markdroth
CC @envoyproxy/api-watchers: FYI only for changes made to (api/envoy/|docs/root/api-docs/).

🐱

Caused by: #43001 was opened by codefromthecrypt.

see: more, trace.

tyxia · 2026-01-15T19:02:20Z

assign to @yanavlasov and @wbpcode , since you reviewed the related PR (#42445) in the past

yanavlasov

Looks good to me. Will wait for API review.

/wait-any

codefromthecrypt · 2026-01-20T03:11:44Z

@wbpcode you mind doing an api review?

Adds HTTP transport support to the OpenTelemetry metrics sink, complementing envoyproxy#42445 (OTLP/HTTP access logs) and envoyproxy#29207 (OTLP/HTTP tracing. This enables direct OTLP metrics export to backends that only accept HTTP (Dynatrace, Datadog, Elastic), without requiring an intermediate collector sidecar. - Add field to oneof - Create abstract base class - Rename to EOF ) Signed-off-by: Adrian Cole <[email protected]>

yanavlasov · 2026-01-21T19:36:13Z

@codefromthecrypt can you merge main to see if CI permafail will get resolved, please?

yanavlasov · 2026-01-21T19:36:16Z

/wait

Signed-off-by: Adrian Cole <[email protected]>

codefromthecrypt · 2026-01-21T21:48:28Z

🤞

wbpcode

/lgtm api

Signed-off-by: code <[email protected]>

wbpcode · 2026-01-24T07:47:15Z

cc @yanavlasov ping for final check of code or merge :)

wbpcode · 2026-01-24T07:49:09Z

Seems no code change after last review of @yanavlasov , will merge this.

paul-r-gall · 2026-01-27T15:18:29Z

@codefromthecrypt please merge main and reupload.

Signed-off-by: code <[email protected]>

wbpcode · 2026-01-28T14:21:36Z

pray for ci

codefromthecrypt · 2026-01-29T22:31:52Z

@wbpcode was this supposed to auto-merge?

… stat-sinks-otlp-http

Signed-off-by: wbpcode/wangbaiping <[email protected]>

@type

…oyproxy#43001) **Additional Description**: Adds HTTP transport support to the OpenTelemetry metrics sink, complementing envoyproxy#42445 (OTLP/HTTP access logs) and envoyproxy#29207 (OTLP/HTTP tracing). This enables direct OTLP metrics export to backends that only accept HTTP (Dynatrace, Datadog, Elastic), without requiring an intermediate collector sidecar. Also refactors the exporter to use an abstract base class: - Add `http_service` field to `protocol_specifier` oneof for OTLP/HTTP transport - Create abstract `OtlpMetricsExporter` base class - Rename `OpenTelemetryGrpcSink` to `OpenTelemetrySink` with generic exporter **Risk Level**: Low (new optional feature, backward compatible) **Testing**: Unit tests, integration test, manual testing with OTel collector **Docs Changes**: Proto documentation updated **Release Notes**: Added **Example Configuration (OTLP/HTTP)** ```yaml stats_sinks: - name: envoy.stat_sinks.open_telemetry typed_config: "@type": type.googleapis.com/envoy.extensions.stat_sinks.open_telemetry.v3.SinkConfig http_service: http_uri: uri: "http://localhost:4318/v1/metrics" cluster: otel_collector timeout: 1s report_counters_as_deltas: true report_histograms_as_deltas: true emit_tags_as_attributes: true use_tag_extracted_name: true ``` **Example Configuration (OTLP/gRPC - unchanged)** ```yaml stats_sinks: - name: envoy.stat_sinks.open_telemetry typed_config: "@type": type.googleapis.com/envoy.extensions.stat_sinks.open_telemetry.v3.SinkConfig grpc_service: envoy_grpc: cluster_name: otel_collector report_counters_as_deltas: true ``` Screenshot of metrics from http transport in otel-tui <img width="1288" height="734" alt="Screenshot 2026-01-14 at 8 46 27 PM" src="https://github.com/user-attachments/assets/49d57f12-61a4-4b0d-9dbc-8b9ad3339554" /> --------- Signed-off-by: Adrian Cole <[email protected]> Signed-off-by: Adrian Cole <[email protected]> Signed-off-by: code <[email protected]> Signed-off-by: wbpcode/wangbaiping <[email protected]> Co-authored-by: code <[email protected]>

@type

…oyproxy#43001) **Additional Description**: Adds HTTP transport support to the OpenTelemetry metrics sink, complementing envoyproxy#42445 (OTLP/HTTP access logs) and envoyproxy#29207 (OTLP/HTTP tracing). This enables direct OTLP metrics export to backends that only accept HTTP (Dynatrace, Datadog, Elastic), without requiring an intermediate collector sidecar. Also refactors the exporter to use an abstract base class: - Add `http_service` field to `protocol_specifier` oneof for OTLP/HTTP transport - Create abstract `OtlpMetricsExporter` base class - Rename `OpenTelemetryGrpcSink` to `OpenTelemetrySink` with generic exporter **Risk Level**: Low (new optional feature, backward compatible) **Testing**: Unit tests, integration test, manual testing with OTel collector **Docs Changes**: Proto documentation updated **Release Notes**: Added **Example Configuration (OTLP/HTTP)** ```yaml stats_sinks: - name: envoy.stat_sinks.open_telemetry typed_config: "@type": type.googleapis.com/envoy.extensions.stat_sinks.open_telemetry.v3.SinkConfig http_service: http_uri: uri: "http://localhost:4318/v1/metrics" cluster: otel_collector timeout: 1s report_counters_as_deltas: true report_histograms_as_deltas: true emit_tags_as_attributes: true use_tag_extracted_name: true ``` **Example Configuration (OTLP/gRPC - unchanged)** ```yaml stats_sinks: - name: envoy.stat_sinks.open_telemetry typed_config: "@type": type.googleapis.com/envoy.extensions.stat_sinks.open_telemetry.v3.SinkConfig grpc_service: envoy_grpc: cluster_name: otel_collector report_counters_as_deltas: true ``` Screenshot of metrics from http transport in otel-tui <img width="1288" height="734" alt="Screenshot 2026-01-14 at 8 46 27 PM" src="https://github.com/user-attachments/assets/49d57f12-61a4-4b0d-9dbc-8b9ad3339554" /> --------- Signed-off-by: Adrian Cole <[email protected]> Signed-off-by: Adrian Cole <[email protected]> Signed-off-by: code <[email protected]> Signed-off-by: wbpcode/wangbaiping <[email protected]> Co-authored-by: code <[email protected]> Signed-off-by: Gustavo <[email protected]>

repokitteh-read-only bot added the api label Jan 14, 2026

repokitteh-read-only bot assigned markdroth Jan 14, 2026

codefromthecrypt mentioned this pull request Jan 14, 2026

feat(telemetry): set authority and enable TLS for telemetry backends envoyproxy/gateway#7904

Merged

codefromthecrypt marked this pull request as ready for review January 14, 2026 12:17

codefromthecrypt requested a review from mattklein123 as a code owner January 14, 2026 12:17

codefromthecrypt mentioned this pull request Jan 14, 2026

access_log: add OTLP/HTTP exporter to OpenTelemetry access logger #42445

Merged

codefromthecrypt force-pushed the stat-sinks-otlp-http branch from b1f0e6e to c2b9d16 Compare January 14, 2026 23:00

tyxia assigned yanavlasov and wbpcode Jan 15, 2026

yanavlasov previously approved these changes Jan 16, 2026

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repokitteh-read-only bot added the waiting:any label Jan 16, 2026

repokitteh-read-only bot removed the waiting:any label Jan 20, 2026

codefromthecrypt dismissed yanavlasov’s stale review via 2847275 January 20, 2026 08:06

codefromthecrypt force-pushed the stat-sinks-otlp-http branch from c2b9d16 to 2847275 Compare January 20, 2026 08:06

repokitteh-read-only bot added the waiting label Jan 21, 2026

Merge branch 'main' into stat-sinks-otlp-http

1e9932b

Signed-off-by: Adrian Cole <[email protected]>

repokitteh-read-only bot removed the waiting label Jan 21, 2026

wbpcode reviewed Jan 24, 2026

View reviewed changes

repokitteh-read-only bot removed the api label Jan 24, 2026

Merge branch 'main' into stat-sinks-otlp-http

c6972f2

Signed-off-by: code <[email protected]>

wbpcode previously approved these changes Jan 24, 2026

View reviewed changes

wbpcode enabled auto-merge (squash) January 24, 2026 07:49

Merge branch 'main' into stat-sinks-otlp-http

3e9f5da

Signed-off-by: code <[email protected]>

wbpcode dismissed their stale review via 3e9f5da January 28, 2026 14:21

wbpcode approved these changes Jan 28, 2026

View reviewed changes

wbpcode disabled auto-merge February 2, 2026 01:42

Merge branch 'main' of ssh://ssh.github.com:443/envoyproxy/envoy into…

da25e4e

… stat-sinks-otlp-http

codefromthecrypt mentioned this pull request Feb 2, 2026

feat: auto-configure OTLP access logging in aigw CLI envoyproxy/ai-gateway#1832

Merged

kick ci

24de916

Signed-off-by: wbpcode/wangbaiping <[email protected]>

wbpcode merged commit ff079e0 into envoyproxy:main Feb 3, 2026
26 checks passed

codefromthecrypt deleted the stat-sinks-otlp-http branch February 4, 2026 01:01

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