From a93ab8be530a1c087e826cfc2cbbfd01f1e1ef27 Mon Sep 17 00:00:00 2001 From: Zach Reyes Date: Wed, 5 Jun 2024 11:04:39 -0400 Subject: [PATCH] Add CSM Observability example --- examples/features/csm_observability/README.md | 30 +++++++ .../csm_observability/client/Dockerfile | 32 ++++++++ .../features/csm_observability/client/main.go | 77 ++++++++++++++++++ .../csm_observability/server/Dockerfile | 33 ++++++++ .../features/csm_observability/server/main.go | 80 +++++++++++++++++++ examples/go.mod | 13 +++ examples/go.sum | 22 ++++- 7 files changed, 285 insertions(+), 2 deletions(-) create mode 100644 examples/features/csm_observability/README.md create mode 100644 examples/features/csm_observability/client/Dockerfile create mode 100644 examples/features/csm_observability/client/main.go create mode 100644 examples/features/csm_observability/server/Dockerfile create mode 100644 examples/features/csm_observability/server/main.go diff --git a/examples/features/csm_observability/README.md b/examples/features/csm_observability/README.md new file mode 100644 index 000000000000..bd7d32cdd07d --- /dev/null +++ b/examples/features/csm_observability/README.md @@ -0,0 +1,30 @@ +# CSM Observability + +This examples shows how to configure CSM Observability for a binary, and shows +what type of telemetry data it can produce for certain RPC's with additional CSM +Labels. The Client accepts configuration from an xDS Control plane as the +default address that it connects to is "xds:///helloworld:50051", but this can +be overridden with the command line flag --addr. + +## Try it (locally if overwritten xDS Address) + +``` +go run server/main.go +``` + +``` +go run client/main.go +``` + +``` +curl localhost:9464/metrics +``` + +# Building +From the grpc-go directory: + +Client: +docker build -t -f examples/features/csm_observability/client/Dockerfile . + +Server: +docker build -t -f examples/features/csm_observability/server/Dockerfile . diff --git a/examples/features/csm_observability/client/Dockerfile b/examples/features/csm_observability/client/Dockerfile new file mode 100644 index 000000000000..d328d4035a4a --- /dev/null +++ b/examples/features/csm_observability/client/Dockerfile @@ -0,0 +1,32 @@ +# Copyright 2024 gRPC authors. +# +# Licensed under the Apache License, Version 2.0 (the "License"); +# you may not use this file except in compliance with the License. +# You may obtain a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, +# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +# See the License for the specific language governing permissions and +# limitations under the License. + +# Dockerfile for building the example client. To build the image, run the +# following command from grpc-go directory: +# docker build -t -f examples/features/csm_observability/client/Dockerfile . +FROM golang:1.21-alpine as build + +# Make a grpc-go directory and copy the repo into it. +WORKDIR /go/src/grpc-go +COPY . . + +# Build a static binary without cgo so that we can copy just the binary in the +# final image, and can get rid of the Go compiler and gRPC-Go dependencies. +RUN cd examples/features/csm_observability/client && go build -tags osusergo,netgo . + +FROM alpine +COPY --from=build /go/src/grpc-go/examples/features/csm_observability/client/client . +ENV GRPC_GO_LOG_VERBOSITY_LEVEL=99 +ENV GRPC_GO_LOG_SEVERITY_LEVEL="info" +ENTRYPOINT ["./client"] diff --git a/examples/features/csm_observability/client/main.go b/examples/features/csm_observability/client/main.go new file mode 100644 index 000000000000..40c2da34e9ff --- /dev/null +++ b/examples/features/csm_observability/client/main.go @@ -0,0 +1,77 @@ +/* + * + * Copyright 2024 gRPC authors. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * + */ + +package main + +import ( + "context" + "flag" + "fmt" + "log" + "net/http" + "time" + + "google.golang.org/grpc" + "google.golang.org/grpc/credentials/insecure" + "google.golang.org/grpc/examples/features/proto/echo" + "google.golang.org/grpc/stats/opentelemetry" + "google.golang.org/grpc/stats/opentelemetry/csm" + _ "google.golang.org/grpc/xds" // To install the xds resolvers and balancers. + + "github.com/prometheus/client_golang/prometheus/promhttp" + "go.opentelemetry.io/otel/exporters/prometheus" + "go.opentelemetry.io/otel/sdk/metric" +) + +var ( + addr = flag.String("addr", "xds:///helloworld:50051", "the server address to connect to") + promAddr = flag.String("promAddr", ":9464", "the Prometheus exporter endpoint") +) + +func main() { + exporter, err := prometheus.New() + if err != nil { + log.Fatalf("Failed to start prometheus exporter: %v", err) + } + provider := metric.NewMeterProvider( + metric.WithReader(exporter), + ) + go http.ListenAndServe(*promAddr, promhttp.Handler()) + + ctx := context.Background() + cleanup := csm.EnableObservability(ctx, opentelemetry.Options{MetricsOptions: opentelemetry.MetricsOptions{MeterProvider: provider}}) + defer cleanup() + + cc, err := grpc.NewClient(*addr, grpc.WithTransportCredentials(insecure.NewCredentials())) + if err != nil { + log.Fatalf("Failed to start NewClient: %v", err) + } + defer cc.Close() + c := echo.NewEchoClient(cc) + + // Make a RPC every second. This should trigger telemetry to be emitted from + // the client and the server. + for { + r, err := c.UnaryEcho(ctx, &echo.EchoRequest{Message: "this is examples/opentelemetry"}) + if err != nil { + log.Fatalf("UnaryEcho failed: %v", err) + } + fmt.Println(r) + time.Sleep(time.Second) + } +} diff --git a/examples/features/csm_observability/server/Dockerfile b/examples/features/csm_observability/server/Dockerfile new file mode 100644 index 000000000000..beb53c07d013 --- /dev/null +++ b/examples/features/csm_observability/server/Dockerfile @@ -0,0 +1,33 @@ +# Copyright 2024 gRPC authors. +# +# Licensed under the Apache License, Version 2.0 (the "License"); +# you may not use this file except in compliance with the License. +# You may obtain a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, +# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +# See the License for the specific language governing permissions and +# limitations under the License. + +# Dockerfile for building the example server. To build the image, run the +# following command from grpc-go directory: +# docker build -t -f examples/features/csm_observability/server/Dockerfile . + +FROM golang:1.21-alpine as build + +# Make a grpc-go directory and copy the repo into it. +WORKDIR /go/src/grpc-go +COPY . . + +# Build a static binary without cgo so that we can copy just the binary in the +# final image, and can get rid of the Go compiler and gRPC-Go dependencies. +RUN cd examples/features/csm_observability/server && go build -tags osusergo,netgo . + +FROM alpine +COPY --from=build /go/src/grpc-go/examples/features/csm_observability/server/server . +ENV GRPC_GO_LOG_VERBOSITY_LEVEL=99 +ENV GRPC_GO_LOG_SEVERITY_LEVEL="info" +ENTRYPOINT ["./server"] diff --git a/examples/features/csm_observability/server/main.go b/examples/features/csm_observability/server/main.go new file mode 100644 index 000000000000..5bb8e8bcf010 --- /dev/null +++ b/examples/features/csm_observability/server/main.go @@ -0,0 +1,80 @@ +/* + * + * Copyright 2024 gRPC authors. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * + */ + +package main + +import ( + "context" + "flag" + "fmt" + "log" + "net" + "net/http" + + "google.golang.org/grpc" + pb "google.golang.org/grpc/examples/features/proto/echo" + "google.golang.org/grpc/stats/opentelemetry" + "google.golang.org/grpc/stats/opentelemetry/csm" + + "github.com/prometheus/client_golang/prometheus/promhttp" + "go.opentelemetry.io/otel/exporters/prometheus" + "go.opentelemetry.io/otel/sdk/metric" +) + +var ( + addr = flag.String("addr", ":50051", "the server address to connect to") + promAddr = flag.String("promAddr", ":9464", "the Prometheus exporter endpoint") +) + +type echoServer struct { + pb.UnimplementedEchoServer + addr string +} + +func (s *echoServer) UnaryEcho(ctx context.Context, req *pb.EchoRequest) (*pb.EchoResponse, error) { + return &pb.EchoResponse{Message: fmt.Sprintf("%s (from %s)", req.Message, s.addr)}, nil +} + +func main() { + exporter, err := prometheus.New() + if err != nil { + log.Fatalf("Failed to start prometheus exporter: %v", err) + } + provider := metric.NewMeterProvider( + metric.WithReader(exporter), + ) + go http.ListenAndServe(*promAddr, promhttp.Handler()) + + cleanup := csm.EnableObservability(context.Background(), opentelemetry.Options{MetricsOptions: opentelemetry.MetricsOptions{MeterProvider: provider}}) + defer cleanup() + + lis, err := net.Listen("tcp", *addr) + if err != nil { + log.Fatalf("failed to listen: %v", err) + } + s := grpc.NewServer() + pb.RegisterEchoServer(s, &echoServer{ + addr: *addr, + }) + + log.Printf("serving on %s\n", *addr) + + if err := s.Serve(lis); err != nil { + log.Fatalf("failed to serve: %v", err) + } +} diff --git a/examples/go.mod b/examples/go.mod index f14c6c58f5ed..11facfa94c95 100644 --- a/examples/go.mod +++ b/examples/go.mod @@ -4,10 +4,14 @@ go 1.21 require ( github.com/cncf/xds/go v0.0.0-20240423153145-555b57ec207b + github.com/prometheus/client_golang v1.19.1 + go.opentelemetry.io/otel/exporters/prometheus v0.49.0 + go.opentelemetry.io/otel/sdk/metric v1.27.0 golang.org/x/oauth2 v0.20.0 google.golang.org/genproto/googleapis/rpc v0.0.0-20240528184218-531527333157 google.golang.org/grpc v1.64.0 google.golang.org/grpc/gcp/observability v1.0.1 + google.golang.org/grpc/stats/opentelemetry v0.0.0-20240604165302-6d236200ea68 google.golang.org/protobuf v1.34.1 ) @@ -22,6 +26,7 @@ require ( cloud.google.com/go/monitoring v1.19.0 // indirect cloud.google.com/go/trace v1.10.7 // indirect contrib.go.opencensus.io/exporter/stackdriver v0.13.15-0.20230702191903-2de6d2748484 // indirect + github.com/GoogleCloudPlatform/opentelemetry-operations-go/detectors/gcp v1.23.0 // indirect github.com/aws/aws-sdk-go-v2 v1.27.0 // indirect github.com/aws/aws-sdk-go-v2/config v1.27.16 // indirect github.com/aws/aws-sdk-go-v2/credentials v1.17.16 // indirect @@ -35,6 +40,7 @@ require ( github.com/aws/aws-sdk-go-v2/service/ssooidc v1.24.3 // indirect github.com/aws/aws-sdk-go-v2/service/sts v1.28.10 // indirect github.com/aws/smithy-go v1.20.2 // indirect + github.com/beorn7/perks v1.0.1 // indirect github.com/census-instrumentation/opencensus-proto v0.4.1 // indirect github.com/cespare/xxhash/v2 v2.3.0 // indirect github.com/envoyproxy/go-control-plane v0.12.0 // indirect @@ -48,11 +54,16 @@ require ( github.com/google/uuid v1.6.0 // indirect github.com/googleapis/enterprise-certificate-proxy v0.3.2 // indirect github.com/googleapis/gax-go/v2 v2.12.4 // indirect + github.com/prometheus/client_model v0.6.1 // indirect + github.com/prometheus/common v0.53.0 // indirect + github.com/prometheus/procfs v0.15.0 // indirect go.opencensus.io v0.24.0 // indirect + go.opentelemetry.io/contrib/detectors/gcp v1.27.0 // indirect go.opentelemetry.io/contrib/instrumentation/google.golang.org/grpc/otelgrpc v0.52.0 // indirect go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp v0.52.0 // indirect go.opentelemetry.io/otel v1.27.0 // indirect go.opentelemetry.io/otel/metric v1.27.0 // indirect + go.opentelemetry.io/otel/sdk v1.27.0 // indirect go.opentelemetry.io/otel/trace v1.27.0 // indirect golang.org/x/crypto v0.23.0 // indirect golang.org/x/net v0.25.0 // indirect @@ -67,3 +78,5 @@ require ( ) replace google.golang.org/grpc => ../ + +replace google.golang.org/grpc/stats/opentelemetry => ../stats/opentelemetry diff --git a/examples/go.sum b/examples/go.sum index 340b89f9376c..f4bb839c12eb 100644 --- a/examples/go.sum +++ b/examples/go.sum @@ -774,6 +774,8 @@ gioui.org v0.0.0-20210308172011-57750fc8a0a6/go.mod h1:RSH6KIUZ0p2xy5zHDxgAM4zum git.sr.ht/~sbinet/gg v0.3.1/go.mod h1:KGYtlADtqsqANL9ueOFkWymvzUvLMQllU5Ixo+8v3pc= github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU= github.com/BurntSushi/xgb v0.0.0-20160522181843-27f122750802/go.mod h1:IVnqGOEym/WlBOVXweHU+Q+/VP0lqqI8lqeDx9IjBqo= +github.com/GoogleCloudPlatform/opentelemetry-operations-go/detectors/gcp v1.23.0 h1:yRhWveg9NbJcJYoJL4FoSauT2dxnt4N9MIAJ7tvU/mQ= +github.com/GoogleCloudPlatform/opentelemetry-operations-go/detectors/gcp v1.23.0/go.mod h1:p2puVVSKjQ84Qb1gzw2XHLs34WQyHTYFZLaVxypAFYs= github.com/JohnCGriffin/overflow v0.0.0-20211019200055-46fa312c352c/go.mod h1:X0CRv0ky0k6m906ixxpzmDRLvX58TFUKS2eePweuyxk= github.com/ajstarks/deck v0.0.0-20200831202436-30c9fc6549a9/go.mod h1:JynElWSGnm/4RlzPXRlREEwqTHAN3T56Bv2ITsFT3gY= github.com/ajstarks/deck/generate v0.0.0-20210309230005-c3f852c02e19/go.mod h1:T13YZdzov6OU0A1+RfKZiZN9ca6VeKdBdyDV+BY97Tk= @@ -811,6 +813,8 @@ github.com/aws/aws-sdk-go-v2/service/sts v1.28.10 h1:69tpbPED7jKPyzMcrwSvhWcJ9bP github.com/aws/aws-sdk-go-v2/service/sts v1.28.10/go.mod h1:0Aqn1MnEuitqfsCNyKsdKLhDUOr4txD/g19EfiUqgws= github.com/aws/smithy-go v1.20.2 h1:tbp628ireGtzcHDDmLT/6ADHidqnwgF57XOXZe6tp4Q= github.com/aws/smithy-go v1.20.2/go.mod h1:krry+ya/rV9RDcV/Q16kpu6ypI4K2czasz0NC3qS14E= +github.com/beorn7/perks v1.0.1 h1:VlbKKnNfV8bJzeqoa4cOKqO6bYr3WgKZxO8Z16+hsOM= +github.com/beorn7/perks v1.0.1/go.mod h1:G2ZrVWU2WbWT9wwq4/hrbKbnv/1ERSJQ0ibhJ6rlkpw= github.com/boombuler/barcode v1.0.0/go.mod h1:paBWMcWSl3LHKBqUq+rly7CNSldXjb2rDl3JlRe0mD8= github.com/boombuler/barcode v1.0.1/go.mod h1:paBWMcWSl3LHKBqUq+rly7CNSldXjb2rDl3JlRe0mD8= github.com/census-instrumentation/opencensus-proto v0.2.1/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU= @@ -1041,10 +1045,18 @@ github.com/pkg/sftp v1.10.1/go.mod h1:lYOWFsE0bwd1+KfKJaKeuokY15vzFx25BLbzYYoAxZ github.com/pkg/sftp v1.13.1/go.mod h1:3HaPG6Dq1ILlpPZRO0HVMrsydcdLt6HRDccSgb87qRg= github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM= github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4= +github.com/prometheus/client_golang v1.19.1 h1:wZWJDwK+NameRJuPGDhlnFgx8e8HN3XHQeLaYJFJBOE= +github.com/prometheus/client_golang v1.19.1/go.mod h1:mP78NwGzrVks5S2H6ab8+ZZGJLZUq1hoULYBAYBw1Ho= github.com/prometheus/client_model v0.0.0-20190812154241-14fe0d1b01d4/go.mod h1:xMI15A0UPsDsEKsMN9yxemIoYk6Tm2C1GtYGdfGttqA= github.com/prometheus/client_model v0.2.0/go.mod h1:xMI15A0UPsDsEKsMN9yxemIoYk6Tm2C1GtYGdfGttqA= github.com/prometheus/client_model v0.3.0/go.mod h1:LDGWKZIo7rky3hgvBe+caln+Dr3dPggB5dvjtD7w9+w= github.com/prometheus/client_model v0.5.0/go.mod h1:dTiFglRmd66nLR9Pv9f0mZi7B7fk5Pm3gvsjB5tr+kI= +github.com/prometheus/client_model v0.6.1 h1:ZKSh/rekM+n3CeS952MLRAdFwIKqeY8b62p8ais2e9E= +github.com/prometheus/client_model v0.6.1/go.mod h1:OrxVMOVHjw3lKMa8+x6HeMGkHMQyHDk9E3jmP2AmGiY= +github.com/prometheus/common v0.53.0 h1:U2pL9w9nmJwJDa4qqLQ3ZaePJ6ZTwt7cMD3AG3+aLCE= +github.com/prometheus/common v0.53.0/go.mod h1:BrxBKv3FWBIGXw89Mg1AeBq7FSyRzXWI3l3e7W3RN5U= +github.com/prometheus/procfs v0.15.0 h1:A82kmvXJq2jTu5YUhSGNlYoxh85zLnKgPz4bMZgI5Ek= +github.com/prometheus/procfs v0.15.0/go.mod h1:Y0RJ/Y5g5wJpkTisOtqwDSo4HwhGmLB4VQSw2sQJLHk= github.com/remyoudompheng/bigfft v0.0.0-20200410134404-eec4a21b6bb0/go.mod h1:qqbHyh8v60DhA7CoWK5oRCqLrMHRGoxYCSS9EjAz6Eo= github.com/remyoudompheng/bigfft v0.0.0-20230129092748-24d4a6f8daec/go.mod h1:qqbHyh8v60DhA7CoWK5oRCqLrMHRGoxYCSS9EjAz6Eo= github.com/rogpeppe/fastuuid v1.2.0/go.mod h1:jVj6XXZzXRy/MSR5jhDC/2q6DgLz+nrA6LYCDYWNEvQ= @@ -1089,16 +1101,22 @@ go.opencensus.io v0.22.5/go.mod h1:5pWMHQbX5EPX2/62yrJeAkowc+lfs/XD7Uxpq3pI6kk= go.opencensus.io v0.23.0/go.mod h1:XItmlyltB5F7CS4xOC1DcqMoFqwtC6OG2xF7mCv7P7E= go.opencensus.io v0.24.0 h1:y73uSU6J157QMP2kn2r30vwW1A2W2WFwSCGnAVxeaD0= go.opencensus.io v0.24.0/go.mod h1:vNK8G9p7aAivkbmorf4v+7Hgx+Zs0yY+0fOtgBfjQKo= +go.opentelemetry.io/contrib/detectors/gcp v1.27.0 h1:eVfDeFAPnMFZUhNdDZ/BbpEmC7/xxDKTSba5NhJH88s= +go.opentelemetry.io/contrib/detectors/gcp v1.27.0/go.mod h1:amd+4uZxqJAUx7zI1JvygUtAc2EVWtQeyz8D+3161SQ= go.opentelemetry.io/contrib/instrumentation/google.golang.org/grpc/otelgrpc v0.52.0 h1:vS1Ao/R55RNV4O7TA2Qopok8yN+X0LIP6RVWLFkprck= go.opentelemetry.io/contrib/instrumentation/google.golang.org/grpc/otelgrpc v0.52.0/go.mod h1:BMsdeOxN04K0L5FNUBfjFdvwWGNe/rkmSwH4Aelu/X0= go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp v0.52.0 h1:9l89oX4ba9kHbBol3Xin3leYJ+252h0zszDtBwyKe2A= go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp v0.52.0/go.mod h1:XLZfZboOJWHNKUv7eH0inh0E9VV6eWDFB/9yJyTLPp0= go.opentelemetry.io/otel v1.27.0 h1:9BZoF3yMK/O1AafMiQTVu0YDj5Ea4hPhxCs7sGva+cg= go.opentelemetry.io/otel v1.27.0/go.mod h1:DMpAK8fzYRzs+bi3rS5REupisuqTheUlSZJ1WnZaPAQ= +go.opentelemetry.io/otel/exporters/prometheus v0.49.0 h1:Er5I1g/YhfYv9Affk9nJLfH/+qCCVVg1f2R9AbJfqDQ= +go.opentelemetry.io/otel/exporters/prometheus v0.49.0/go.mod h1:KfQ1wpjf3zsHjzP149P4LyAwWRupc6c7t1ZJ9eXpKQM= go.opentelemetry.io/otel/metric v1.27.0 h1:hvj3vdEKyeCi4YaYfNjv2NUje8FqKqUY8IlF0FxV/ik= go.opentelemetry.io/otel/metric v1.27.0/go.mod h1:mVFgmRlhljgBiuk/MP/oKylr4hs85GZAylncepAX/ak= -go.opentelemetry.io/otel/sdk v1.24.0 h1:YMPPDNymmQN3ZgczicBY3B6sf9n62Dlj9pWD3ucgoDw= -go.opentelemetry.io/otel/sdk v1.24.0/go.mod h1:KVrIYw6tEubO9E96HQpcmpTKDVn9gdv35HoYiQWGDFg= +go.opentelemetry.io/otel/sdk v1.27.0 h1:mlk+/Y1gLPLn84U4tI8d3GNJmGT/eXe3ZuOXN9kTWmI= +go.opentelemetry.io/otel/sdk v1.27.0/go.mod h1:Ha9vbLwJE6W86YstIywK2xFfPjbWlCuwPtMkKdz/Y4A= +go.opentelemetry.io/otel/sdk/metric v1.27.0 h1:5uGNOlpXi+Hbo/DRoI31BSb1v+OGcpv2NemcCrOL8gI= +go.opentelemetry.io/otel/sdk/metric v1.27.0/go.mod h1:we7jJVrYN2kh3mVBlswtPU22K0SA+769l93J6bsyvqw= go.opentelemetry.io/otel/trace v1.27.0 h1:IqYb813p7cmbHk0a5y6pD5JPakbVfftRXABGt5/Rscw= go.opentelemetry.io/otel/trace v1.27.0/go.mod h1:6RiD1hkAprV4/q+yd2ln1HG9GoPx39SuvvstaLBl+l4= go.opentelemetry.io/proto/otlp v0.7.0/go.mod h1:PqfVotwruBrMGOCsRd/89rSnXhoiJIqeYNgFYFoEGnI=