Migrating Jaeger tracing from OpenTracing to OpenTelemetry; Add OTLP exporter

CHANGELOG.md

@@ -24,6 +24,7 @@ We use *breaking :warning:* to mark changes that are not backward compatible (re
 - [#5723](https://github.com/thanos-io/thanos/pull/5723) Compactor: Support disable block viewer UI.
 - [#5674](https://github.com/thanos-io/thanos/pull/5674) Query Frontend/Store: Add support connecting to redis using TLS.
 - [#5734](https://github.com/thanos-io/thanos/pull/5734) Store: Support disable block viewer UI.
+- [#5411](https://github.com/thanos-io/thanos/pull/5411) Tracing: Add OpenTelemetry Protocol exporter.
 
 ### Changed
 
@@ -33,6 +34,7 @@ We use *breaking :warning:* to mark changes that are not backward compatible (re
 - [#5641](https://github.com/thanos-io/thanos/pull/5641) Store: Remove hardcoded labels in shard matcher.
 - [#5641](https://github.com/thanos-io/thanos/pull/5641) Query: Inject unshardable le label in query analyzer.
 - [#5685](https://github.com/thanos-io/thanos/pull/5685) Receive: Make active/head series limiting configuration per tenant by adding it to new limiting config.
+- [#5411](https://github.com/thanos-io/thanos/pull/5411) Tracing: Change Jaeger exporter from OpenTracing to OpenTelemetry. *Options `RPC Metrics`, `Gen128Bit` and `Disabled` are now deprecated and won't have any effect when set :warning:.*
 
 ### Removed
 

docs/tracing.md

@@ -70,9 +70,39 @@ Every request against any Thanos component's API with header `X-Thanos-Force-Tra
 
 Currently supported tracing backends:
 
+### OpenTelemetry (OTLP)
+
+Thanos supports exporting traces in the OpenTelemetry Protocol (OTLP). Both gRPC and HTTP clients are supported. Options can be provided also via environment variables. For more details see the [exporter specification](https://github.com/open-telemetry/opentelemetry-specification/blob/main/specification/protocol/exporter.md#configuration-options).
+
+```yaml mdox-exec="go run scripts/cfggen/main.go --name=otlp.Config"
+type: OTLP
+config:
+  client_type: ""
+  reconnection_period: 0s
+  compression: ""
+  insecure: false
+  endpoint: ""
+  url_path: ""
+  timeout: 0s
+  retry_config:
+    retry_enabled: false
+    retry_initial_interval: 0s
+    retry_max_interval: 0s
+    retry_max_elapsed_time: 0s
+  headers: {}
+  tls_config:
+    ca_file: ""
+    cert_file: ""
+    key_file: ""
+    server_name: ""
+    insecure_skip_verify: false
+```
+
 ### Jaeger
 
-Client for https://github.com/jaegertracing/jaeger tracing.
+Client for https://github.com/jaegertracing/jaeger tracing. Options can be provided also via environment variables. For more details see the Jaeger [exporter specification](https://github.com/open-telemetry/opentelemetry-specification/blob/main/specification/sdk-environment-variables.md#jaeger-exporter).
+
+*WARNING: Options `RPC Metrics`, `Gen128Bit` and `Disabled` are now deprecated and won't have any effect when set*
 
 ```yaml mdox-exec="go run scripts/cfggen/main.go --name=jaeger.Config"
 type: JAEGER
@@ -86,9 +116,17 @@ config:
   sampler_manager_host_port: ""
   sampler_max_operations: 0
   sampler_refresh_interval: 0s
+  sampler_parent_config:
+    local_parent_sampled: false
+    remote_parent_sampled: false
+  sampling_server_url: ""
+  operation_name_late_binding: false
+  initial_sampler_rate: 0
   reporter_max_queue_size: 0
   reporter_flush_interval: 0s
   reporter_log_spans: false
+  reporter_disable_attempt_reconnecting: false
+  reporter_attempt_reconnect_interval: 0s
   endpoint: ""
   user: ""
   password: ""

go.mod

@@ -1,6 +1,7 @@
 module github.com/thanos-io/thanos
 
 require (
+	cloud.google.com/go/storage v1.22.1 // indirect
 	cloud.google.com/go/trace v1.2.0
 	github.com/GoogleCloudPlatform/opentelemetry-operations-go/exporter/trace v1.8.3
 	github.com/NYTimes/gziphandler v1.1.1
@@ -72,15 +73,19 @@ require (
 	github.com/thanos-community/promql-engine v0.0.0-20220929065849-dbc95397ccf3
 	github.com/thanos-io/objstore v0.0.0-20220923084403-cec51c61948b
 	github.com/uber/jaeger-client-go v2.30.0+incompatible
-	github.com/uber/jaeger-lib v2.4.1+incompatible
+	github.com/uber/jaeger-lib v2.4.1+incompatible // indirect
 	github.com/vimeo/galaxycache v0.0.0-20210323154928-b7e5d71c067a
 	github.com/weaveworks/common v0.0.0-20220706100410-67d27ed40fae
 	go.elastic.co/apm v1.11.0
 	go.elastic.co/apm/module/apmot v1.11.0
 	go.etcd.io/etcd/api/v3 v3.5.4
 	go.etcd.io/etcd/client/pkg/v3 v3.5.4
 	go.etcd.io/etcd/client/v3 v3.5.4
-	go.opentelemetry.io/contrib/propagators/ot v1.4.0
+	go.opentelemetry.io/contrib/propagators/ot v1.9.0 // indirect
+	go.opentelemetry.io/otel v1.10.0
+	go.opentelemetry.io/otel/bridge/opentracing v1.10.0
+	go.opentelemetry.io/otel/sdk v1.9.0
+	go.opentelemetry.io/otel/trace v1.10.0
 	go.uber.org/atomic v1.9.0
 	go.uber.org/automaxprocs v1.5.1
 	go.uber.org/goleak v1.1.12
@@ -89,6 +94,7 @@ require (
 	golang.org/x/sync v0.0.0-20220722155255-886fb9371eb4
 	golang.org/x/text v0.3.7
 	golang.org/x/time v0.0.0-20220722155302-e5dcc9cfc0b9
+	google.golang.org/api v0.91.0 // indirect
 	google.golang.org/genproto v0.0.0-20220808204814-fd01256a5276
 	google.golang.org/grpc v1.48.0
 	google.golang.org/grpc/examples v0.0.0-20211119005141-f45e61797429
@@ -101,22 +107,30 @@ require (
 require (
 	github.com/efficientgo/core v1.0.0-rc.0
 	github.com/minio/sha256-simd v1.0.0
-	go.opentelemetry.io/otel v1.10.0
-	go.opentelemetry.io/otel/bridge/opentracing v1.10.0
-	go.opentelemetry.io/otel/sdk v1.9.0
-	go.opentelemetry.io/otel/trace v1.10.0
 )
 
 require (
 	cloud.google.com/go v0.102.0 // indirect
 	cloud.google.com/go/compute v1.7.0 // indirect
 	cloud.google.com/go/iam v0.3.0 // indirect
-	cloud.google.com/go/storage v1.22.1 // indirect
 	github.com/Azure/azure-sdk-for-go/sdk/azcore v1.1.0 // indirect
 	github.com/Azure/azure-sdk-for-go/sdk/azidentity v1.1.0 // indirect
 	github.com/Azure/azure-sdk-for-go/sdk/internal v1.0.0 // indirect
 	github.com/Azure/azure-sdk-for-go/sdk/storage/azblob v0.4.1 // indirect
 	github.com/AzureAD/microsoft-authentication-library-for-go v0.5.1 // indirect
+	go.opentelemetry.io/contrib/samplers/jaegerremote v0.3.0
+	go.opentelemetry.io/otel/exporters/jaeger v1.8.0
+	go.opentelemetry.io/otel/exporters/otlp/otlptrace v1.9.0
+	go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc v1.9.0
+	go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracehttp v1.9.0
+)
+
+require (
+	github.com/efficientgo/tools/core v0.0.0-20220817170617-6c25e3b627dd
+	go.opentelemetry.io/contrib/propagators/autoprop v0.34.0
+)
+
+require (
 	github.com/GoogleCloudPlatform/opentelemetry-operations-go/internal/resourcemapping v0.32.3 // indirect
 	github.com/OneOfOne/xxhash v1.2.6 // indirect
 	github.com/StackExchange/wmi v0.0.0-20190523213315-cbe66965904d // indirect
@@ -139,6 +153,7 @@ require (
 	github.com/aws/smithy-go v1.11.1 // indirect
 	github.com/baidubce/bce-sdk-go v0.9.111 // indirect
 	github.com/beorn7/perks v1.0.1 // indirect
+	github.com/cenkalti/backoff/v4 v4.1.3 // indirect
 	github.com/chromedp/sysutil v1.0.0 // indirect
 	github.com/clbanning/mxj v1.8.4 // indirect
 	github.com/coreos/go-semver v0.3.0 // indirect
@@ -147,7 +162,6 @@ require (
 	github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f // indirect
 	github.com/dnaeon/go-vcr v1.2.0 // indirect
 	github.com/edsrzf/mmap-go v1.1.0 // indirect
-	github.com/efficientgo/tools/core v0.0.0-20220817170617-6c25e3b627dd // indirect
 	github.com/elastic/go-sysinfo v1.8.1 // indirect
 	github.com/elastic/go-windows v1.0.1 // indirect
 	github.com/fatih/color v1.13.0 // indirect
@@ -180,6 +194,7 @@ require (
 	github.com/googleapis/enterprise-certificate-proxy v0.1.0 // indirect
 	github.com/googleapis/gax-go/v2 v2.4.0 // indirect
 	github.com/googleapis/go-type-adapters v1.0.0 // indirect
+	github.com/grpc-ecosystem/grpc-gateway/v2 v2.11.1 // indirect
 	github.com/hashicorp/errwrap v1.1.0 // indirect
 	github.com/hashicorp/go-hclog v0.16.2 // indirect
 	github.com/hashicorp/go-immutable-radix v1.3.1 // indirect
@@ -221,6 +236,7 @@ require (
 	github.com/spaolacci/murmur3 v1.1.0 // indirect
 	github.com/stretchr/objx v0.4.0 // indirect
 	github.com/tencentyun/cos-go-sdk-v5 v0.7.34 // indirect
+	github.com/tidwall/pretty v1.2.0 // indirect
 	github.com/tklauser/go-sysconf v0.3.4 // indirect
 	github.com/tklauser/numcpus v0.2.1 // indirect
 	github.com/weaveworks/promrus v1.2.0 // indirect
@@ -230,7 +246,12 @@ require (
 	go.mongodb.org/mongo-driver v1.10.0 // indirect
 	go.opencensus.io v0.23.0 // indirect
 	go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp v0.34.0 // indirect
+	go.opentelemetry.io/contrib/propagators/aws v1.9.0 // indirect
+	go.opentelemetry.io/contrib/propagators/b3 v1.9.0 // indirect
+	go.opentelemetry.io/contrib/propagators/jaeger v1.9.0 // indirect
+	go.opentelemetry.io/otel/exporters/otlp/internal/retry v1.9.0 // indirect
 	go.opentelemetry.io/otel/metric v0.31.0 // indirect
+	go.opentelemetry.io/proto/otlp v0.18.0 // indirect
 	go.uber.org/multierr v1.8.0 // indirect
 	go.uber.org/zap v1.21.0 // indirect
 	golang.org/x/mod v0.6.0-dev.0.20220419223038-86c51ed26bb4 // indirect
@@ -239,7 +260,6 @@ require (
 	golang.org/x/tools v0.1.12 // indirect
 	golang.org/x/xerrors v0.0.0-20220609144429-65e65417b02f // indirect
 	gonum.org/v1/gonum v0.12.0 // indirect
-	google.golang.org/api v0.91.0 // indirect
 	google.golang.org/appengine v1.6.7 // indirect
 	google.golang.org/protobuf v1.28.1 // indirect
 	gopkg.in/ini.v1 v1.66.6 // indirect

go.sum

@@ -179,6 +179,8 @@ github.com/blang/semver/v4 v4.0.0/go.mod h1:IbckMUScFkM3pff0VJDNKRiT6TG/YpiHIM2y
 github.com/casbin/casbin/v2 v2.1.2/go.mod h1:YcPU1XXisHhLzuxH9coDNf2FbKpjGlbCg3n9yuLkIJQ=
 github.com/cenkalti/backoff v2.2.1+incompatible/go.mod h1:90ReRw6GdpyfrHakVjL/QHaoyV4aDUVVkXQJJJ3NXXM=
 github.com/cenkalti/backoff/v4 v4.1.2/go.mod h1:scbssz8iZGpm3xbr14ovlUdkxfGXNInqkPWOWmG2CLw=
+github.com/cenkalti/backoff/v4 v4.1.3 h1:cFAlzYUlVYDysBEH2T5hyJZMh3+5+WCBvSnK6Q8UtC4=
+github.com/cenkalti/backoff/v4 v4.1.3/go.mod h1:scbssz8iZGpm3xbr14ovlUdkxfGXNInqkPWOWmG2CLw=
 github.com/census-instrumentation/opencensus-proto v0.2.1/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU=
 github.com/cespare/xxhash v1.1.0 h1:a6HrQnmkObjyL+Gs60czilIUGqrzKutQD6XZog3p+ko=
 github.com/cespare/xxhash v1.1.0/go.mod h1:XrSqR1VqqWfGrhpAt58auRo0WTKS1nRRg3ghfAqPWnc=
@@ -401,6 +403,8 @@ github.com/golang-jwt/jwt v3.2.1+incompatible/go.mod h1:8pz2t5EyA70fFQQSrl6XZXzq
 github.com/golang-jwt/jwt/v4 v4.4.1 h1:pC5DB52sCeK48Wlb9oPcdhnjkz1TKt1D/P7WKJ0kUcQ=
 github.com/golang-jwt/jwt/v4 v4.4.1/go.mod h1:m21LjoU+eqJr34lmDMbreY2eSTRJ1cv77w39/MY0Ch0=
 github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b/go.mod h1:SBH7ygxi8pfUlaOkMMuAQtPIUF8ecWP5IEl/CR7VP2Q=
+github.com/golang/glog v1.0.0 h1:nfP3RFugxnNRyKgeWd4oI1nYvXpxrx8ck8ZrcizshdQ=
+github.com/golang/glog v1.0.0/go.mod h1:EWib/APOK0SL3dFbYqvxE3UYd8E6s1ouQ7iEp/0LWV4=
 github.com/golang/groupcache v0.0.0-20160516000752-02826c3e7903/go.mod h1:cIg4eruTrX1D+g88fzRXU5OdNfaM+9IcxsU14FzY7Hc=
 github.com/golang/groupcache v0.0.0-20190702054246-869f871628b6/go.mod h1:cIg4eruTrX1D+g88fzRXU5OdNfaM+9IcxsU14FzY7Hc=
 github.com/golang/groupcache v0.0.0-20191227052852-215e87163ea7/go.mod h1:cIg4eruTrX1D+g88fzRXU5OdNfaM+9IcxsU14FzY7Hc=
@@ -532,6 +536,9 @@ github.com/grpc-ecosystem/go-grpc-prometheus v1.2.0 h1:Ovs26xHkKqVztRpIrF/92Bcuy
 github.com/grpc-ecosystem/go-grpc-prometheus v1.2.0/go.mod h1:8NvIoxWQoOIhqOTXgfV/d3M/q6VIi02HzZEHgUlZvzk=
 github.com/grpc-ecosystem/grpc-gateway v1.9.5/go.mod h1:vNeuVxBJEsws4ogUvrchl83t/GYV9WGTSLVdBhOQFDY=
 github.com/grpc-ecosystem/grpc-gateway v1.16.0/go.mod h1:BDjrQk3hbvj6Nolgz8mAMFbcEtjT1g+wF4CSlocrBnw=
+github.com/grpc-ecosystem/grpc-gateway/v2 v2.7.0/go.mod h1:hgWBS7lorOAVIJEQMi4ZsPv9hVvWI6+ch50m39Pf2Ks=
+github.com/grpc-ecosystem/grpc-gateway/v2 v2.11.1 h1:/sDbPb60SusIXjiJGYLUoS/rAQurQmvGWmwn2bBPM9c=
+github.com/grpc-ecosystem/grpc-gateway/v2 v2.11.1/go.mod h1:G+WkljZi4mflcqVxYSgvt8MNctRQHjEH8ubKtt1Ka3w=
 github.com/grpc-ecosystem/grpc-opentracing v0.0.0-20180507213350-8e809c8a8645/go.mod h1:6iZfnjpejD4L/4DwD7NryNaJyCQdzwWwH2MWhCA90Kw=
 github.com/hashicorp/consul/api v1.3.0/go.mod h1:MmDNSzIMUjNpY/mQ398R4bk2FnqQLoPndWW5VkKPlCE=
 github.com/hashicorp/consul/api v1.14.0 h1:Y64GIJ8hYTu+tuGekwO4G4ardXoiCivX9wv1iP/kihk=
@@ -943,8 +950,9 @@ github.com/thanos-io/objstore v0.0.0-20220923084403-cec51c61948b h1:P+MnJn+NoU6N
 github.com/thanos-io/objstore v0.0.0-20220923084403-cec51c61948b/go.mod h1:Vx5dZs9ElxEhNLnum/OgB0pNTqNdI2zdXL82BeJr3T4=
 github.com/themihai/gomemcache v0.0.0-20180902122335-24332e2d58ab h1:7ZR3hmisBWw77ZpO1/o86g+JV3VKlk3d48jopJxzTjU=
 github.com/themihai/gomemcache v0.0.0-20180902122335-24332e2d58ab/go.mod h1:eheTFp954zcWZXCU8d0AT76ftsQOTo4DTqkN/h3k1MY=
-github.com/tidwall/pretty v1.0.0 h1:HsD+QiTn7sK6flMKIvNmpqz1qrpP3Ps6jOKIKMooyg4=
 github.com/tidwall/pretty v1.0.0/go.mod h1:XNkn88O1ChpSDQmQeStsy+sBenx6DDtFZJxhVysOjyk=
+github.com/tidwall/pretty v1.2.0 h1:RWIZEg2iJ8/g6fDDYzMpobmaoGh5OLl4AXtGUGPcqCs=
+github.com/tidwall/pretty v1.2.0/go.mod h1:ITEVvHYasfjBbM0u2Pg8T2nJnzm8xPwvNhhsoaGGjNU=
 github.com/tklauser/go-sysconf v0.3.4 h1:HT8SVixZd3IzLdfs/xlpq0jeSfTX57g1v6wB1EuzV7M=
 github.com/tklauser/go-sysconf v0.3.4/go.mod h1:Cl2c8ZRWfHD5IrfHo9VN+FX9kCFjIOyVklgXycLB6ek=
 github.com/tklauser/numcpus v0.2.1 h1:ct88eFm+Q7m2ZfXJdan1xYoXKlmwsfP+k88q05KvlZc=
@@ -1013,21 +1021,45 @@ go.opencensus.io v0.23.0 h1:gqCw0LfLxScz8irSi8exQc7fyQ0fKQU/qnC/X8+V/1M=
 go.opencensus.io v0.23.0/go.mod h1:XItmlyltB5F7CS4xOC1DcqMoFqwtC6OG2xF7mCv7P7E=
 go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp v0.34.0 h1:9NkMW03wwEzPtP/KciZ4Ozu/Uz5ZA7kfqXJIObnrjGU=
 go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp v0.34.0/go.mod h1:548ZsYzmT4PL4zWKRd8q/N4z0Wxzn/ZxUE+lkEpwWQA=
-go.opentelemetry.io/contrib/propagators/ot v1.4.0 h1:sHp8P5+xmMORvsgKjIPPX4U97JUgSqY4xPWa6ncF1PA=
-go.opentelemetry.io/contrib/propagators/ot v1.4.0/go.mod h1:FivzsGJqC7ND++UUOifWfkiuEOFXtVQ3fh2ZkqIJ9X4=
-go.opentelemetry.io/otel v1.4.0/go.mod h1:jeAqMFKy2uLIxCtKxoFj0FAL5zAPKQagc3+GtBWakzk=
+go.opentelemetry.io/contrib/propagators/autoprop v0.34.0 h1:S1iBWYnf1iqK4O/qnjUhQ2MMNis/h5+LeB/51+uzGHI=
+go.opentelemetry.io/contrib/propagators/autoprop v0.34.0/go.mod h1:lJppyBme+d8vGNukA9sHdlKvw/q4i4c9JXx2RTpuHmM=
+go.opentelemetry.io/contrib/propagators/aws v1.9.0 h1:60BnkzNPdU3WD12oOGQNTjgbyws8iDggIaBWpghvcVo=
+go.opentelemetry.io/contrib/propagators/aws v1.9.0/go.mod h1:lYGAfTJZU1mo92QxtuiuNJjRyRyEWj1ldO1b0Vpc1I0=
+go.opentelemetry.io/contrib/propagators/b3 v1.9.0 h1:Lzb9zU98jCE2kyfCjWfSSsiQoGtvBL+COxvUBf7FNhU=
+go.opentelemetry.io/contrib/propagators/b3 v1.9.0/go.mod h1:fyx3gFXn+4w5uWTTiqaI8oBNBW/6w9Ow5zxXf7NGixU=
+go.opentelemetry.io/contrib/propagators/jaeger v1.9.0 h1:edJTgwezAtLKUINAXfjxllJ1vlsphNPV7RkuKNd/HkQ=
+go.opentelemetry.io/contrib/propagators/jaeger v1.9.0/go.mod h1:Q/AXutvrBTfEDSeRLwOmKhyviX5adJvTesg6JFTybYg=
+go.opentelemetry.io/contrib/propagators/ot v1.9.0 h1:+pYoqyFoA3H6EZ7Wie2ZQdqS4ZfG42PAGvj3eLUukHE=
+go.opentelemetry.io/contrib/propagators/ot v1.9.0/go.mod h1:D2GfaecHHX67fXT93/5iKl2DArjt8+H0XWtFD8b4Z+k=
+go.opentelemetry.io/contrib/samplers/jaegerremote v0.3.0 h1:SLLzX5hdPC0jR3t0MrmRhZkKZJ0UKhcB+0N/wWkiarQ=
+go.opentelemetry.io/contrib/samplers/jaegerremote v0.3.0 h1:SLLzX5hdPC0jR3t0MrmRhZkKZJ0UKhcB+0N/wWkiarQ=
+go.opentelemetry.io/contrib/samplers/jaegerremote v0.3.0/go.mod h1:QnxuwZJaTvT5YN/25CLle62v/7gal96wXN/CSOhWMaI=
+go.opentelemetry.io/contrib/samplers/jaegerremote v0.3.0/go.mod h1:QnxuwZJaTvT5YN/25CLle62v/7gal96wXN/CSOhWMaI=
 go.opentelemetry.io/otel v1.10.0 h1:Y7DTJMR6zs1xkS/upamJYk0SxxN4C9AqRd77jmZnyY4=
 go.opentelemetry.io/otel v1.10.0/go.mod h1:NbvWjCthWHKBEUMpf0/v8ZRZlni86PpGFEMA9pnQSnQ=
 go.opentelemetry.io/otel/bridge/opentracing v1.10.0 h1:WzAVGovpC1s7KD5g4taU6BWYZP3QGSDVTlbRu9fIHw8=
 go.opentelemetry.io/otel/bridge/opentracing v1.10.0/go.mod h1:J7GLR/uxxqMAzZptsH0pjte3Ep4GacTCrbGBoDuHBqk=
+go.opentelemetry.io/otel/exporters/jaeger v1.8.0 h1:TLLqD6kDhLPziEC7pgPrMvP9lAqdk3n1gf8DiFSnfW8=
+go.opentelemetry.io/otel/exporters/jaeger v1.8.0/go.mod h1:GbWg+ng88rDtx+id26C34QLqw2erqJeAjsCx9AFeHfE=
+go.opentelemetry.io/otel/exporters/otlp/internal/retry v1.9.0 h1:ggqApEjDKczicksfvZUCxuvoyDmR6Sbm56LwiK8DVR0=
+go.opentelemetry.io/otel/exporters/otlp/internal/retry v1.9.0/go.mod h1:78XhIg8Ht9vR4tbLNUhXsiOnE2HOuSeKAiAcoVQEpOY=
+go.opentelemetry.io/otel/exporters/otlp/otlptrace v1.9.0 h1:NN90Cuna0CnBg8YNu1Q0V35i2E8LDByFOwHRCq/ZP9I=
+go.opentelemetry.io/otel/exporters/otlp/otlptrace v1.9.0/go.mod h1:0EsCXjZAiiZGnLdEUXM9YjCKuuLZMYyglh2QDXcYKVA=
+go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc v1.9.0 h1:M0/hqGuJBLeIEu20f89H74RGtqV2dn+SFWEz9ATAAwY=
+go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc v1.9.0/go.mod h1:K5G92gbtCrYJ0mn6zj9Pst7YFsDFuvSYEhYKRMcufnM=
+go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracehttp v1.9.0 h1:FAF9l8Wjxi9Ad2k/vLTfHZyzXYX72C62wBGpV3G6AIo=
+go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracehttp v1.9.0/go.mod h1:smUdtylgc0YQiUr2PuifS4hBXhAS5xtR6WQhxP1wiNA=
 go.opentelemetry.io/otel/metric v0.31.0 h1:6SiklT+gfWAwWUR0meEMxQBtihpiEs4c+vL9spDTqUs=
 go.opentelemetry.io/otel/metric v0.31.0/go.mod h1:ohmwj9KTSIeBnDBm/ZwH2PSZxZzoOaG2xZeekTRzL5A=
 go.opentelemetry.io/otel/sdk v1.9.0 h1:LNXp1vrr83fNXTHgU8eO89mhzxb/bbWAsHG6fNf3qWo=
+go.opentelemetry.io/otel/sdk v1.9.0 h1:LNXp1vrr83fNXTHgU8eO89mhzxb/bbWAsHG6fNf3qWo=
+go.opentelemetry.io/otel/sdk v1.9.0/go.mod h1:AEZc8nt5bd2F7BC24J5R0mrjYnpEgYHyTcM/vrSple4=
 go.opentelemetry.io/otel/sdk v1.9.0/go.mod h1:AEZc8nt5bd2F7BC24J5R0mrjYnpEgYHyTcM/vrSple4=
-go.opentelemetry.io/otel/trace v1.4.0/go.mod h1:uc3eRsqDfWs9R7b92xbQbU42/eTNz4N+gLP8qJCi4aE=
 go.opentelemetry.io/otel/trace v1.10.0 h1:npQMbR8o7mum8uF95yFbOEJffhs1sbCOfDh8zAJiH5E=
 go.opentelemetry.io/otel/trace v1.10.0/go.mod h1:Sij3YYczqAdz+EhmGhE6TpTxUO5/F/AzrK+kxfGqySM=
 go.opentelemetry.io/proto/otlp v0.7.0/go.mod h1:PqfVotwruBrMGOCsRd/89rSnXhoiJIqeYNgFYFoEGnI=
+go.opentelemetry.io/proto/otlp v0.18.0 h1:W5hyXNComRa23tGpKwG+FRAc4rfF6ZUg1JReK+QHS80=
+go.opentelemetry.io/proto/otlp v0.18.0/go.mod h1:H7XAot3MsfNsj7EXtrA2q5xSNQ10UqI405h3+duxN4U=
 go.uber.org/atomic v1.3.2/go.mod h1:gD2HeocX3+yG+ygLZcrzQJaqmWj9AIm7n08wl/qW/PE=
 go.uber.org/atomic v1.4.0/go.mod h1:gD2HeocX3+yG+ygLZcrzQJaqmWj9AIm7n08wl/qW/PE=
 go.uber.org/atomic v1.5.0/go.mod h1:sABNBOSYdrvTF6hTgEIbc7YasKWGhgEQZyfxyTvoXHQ=

pkg/extprom/http/instrument_server.go

@@ -13,6 +13,7 @@ import (
 	"github.com/prometheus/client_golang/prometheus"
 	"github.com/prometheus/client_golang/prometheus/promhttp"
 	"github.com/uber/jaeger-client-go"
+	"go.opentelemetry.io/otel/trace"
 )
 
 // InstrumentationMiddleware holds necessary metrics to instrument an http.Server
@@ -78,17 +79,36 @@ func httpInstrumentationHandler(baseLabels prometheus.Labels, metrics *defaultMe
 						observer.Observe(time.Since(now).Seconds())
 
 						// If we find a tracingID we'll expose it as Exemplar.
+						var (
+							traceID string
+							OTfound bool
+						)
+
 						span := opentracing.SpanFromContext(r.Context())
 						if span != nil {
 							spanCtx, ok := span.Context().(jaeger.SpanContext)
 							if ok && spanCtx.IsSampled() {
-								observer.(prometheus.ExemplarObserver).ObserveWithExemplar(
-									time.Since(now).Seconds(),
-									prometheus.Labels{
-										"traceID": spanCtx.TraceID().String(),
-									},
-								)
+								traceID = spanCtx.TraceID().String()
 							}
+
+							OTfound = ok
+						}
+
+						// If OpenTracing span not found, try OTEL.
+						if !OTfound {
+							span := trace.SpanFromContext(r.Context())
+							if span != nil {
+								traceID = span.SpanContext().SpanID().String()
+							}
+						}
+
+						if traceID != "" {
+							observer.(prometheus.ExemplarObserver).ObserveWithExemplar(
+								time.Since(now).Seconds(),
+								prometheus.Labels{
+									"traceID": traceID,
+								},
+							)
 						}
 					}),
 				),