From 55fdd0ca17423fc9ea4f6e699af09bc983a1e970 Mon Sep 17 00:00:00 2001 From: andrey Date: Sat, 6 Apr 2024 15:23:04 +0300 Subject: [PATCH] init meter provider --- go.mod | 17 +++++++ go.sum | 27 +++++++++++ meter/provider.go | 115 ++++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 159 insertions(+) create mode 100644 go.mod create mode 100644 go.sum create mode 100644 meter/provider.go diff --git a/go.mod b/go.mod new file mode 100644 index 0000000..35b1e81 --- /dev/null +++ b/go.mod @@ -0,0 +1,17 @@ +module gitoa.ru/go-4devs/otel + +go 1.22.2 + +require ( + go.opentelemetry.io/otel v1.25.0 + go.opentelemetry.io/otel/sdk v1.25.0 + go.opentelemetry.io/otel/sdk/metric v1.25.0 +) + +require ( + github.com/go-logr/logr v1.4.1 // indirect + github.com/go-logr/stdr v1.2.2 // indirect + go.opentelemetry.io/otel/metric v1.25.0 // indirect + go.opentelemetry.io/otel/trace v1.25.0 // indirect + golang.org/x/sys v0.18.0 // indirect +) diff --git a/go.sum b/go.sum new file mode 100644 index 0000000..06bb7f5 --- /dev/null +++ b/go.sum @@ -0,0 +1,27 @@ +github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c= +github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38= +github.com/go-logr/logr v1.2.2/go.mod h1:jdQByPbusPIv2/zmleS9BjJVeZ6kBagPoEUsqbVz/1A= +github.com/go-logr/logr v1.4.1 h1:pKouT5E8xu9zeFC39JXRDukb6JFQPXM5p5I91188VAQ= +github.com/go-logr/logr v1.4.1/go.mod h1:9T104GzyrTigFIr8wt5mBrctHMim0Nb2HLGrmQ40KvY= +github.com/go-logr/stdr v1.2.2 h1:hSWxHoqTgW2S2qGc0LTAI563KZ5YKYRhT3MFKZMbjag= +github.com/go-logr/stdr v1.2.2/go.mod h1:mMo/vtBO5dYbehREoey6XUKy/eSumjCCveDpRre4VKE= +github.com/google/go-cmp v0.6.0 h1:ofyhxvXcZhMsU5ulbFiLKl/XBFqE1GSq7atu8tAmTRI= +github.com/google/go-cmp v0.6.0/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY= +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/stretchr/testify v1.9.0 h1:HtqpIVDClZ4nwg75+f6Lvsy/wHu+3BoSGCbBAcpTsTg= +github.com/stretchr/testify v1.9.0/go.mod h1:r2ic/lqez/lEtzL7wO/rwa5dbSLXVDPFyf8C91i36aY= +go.opentelemetry.io/otel v1.25.0 h1:gldB5FfhRl7OJQbUHt/8s0a7cE8fbsPAtdpRaApKy4k= +go.opentelemetry.io/otel v1.25.0/go.mod h1:Wa2ds5NOXEMkCmUou1WA7ZBfLTHWIsp034OVD7AO+Vg= +go.opentelemetry.io/otel/metric v1.25.0 h1:LUKbS7ArpFL/I2jJHdJcqMGxkRdxpPHE0VU/D4NuEwA= +go.opentelemetry.io/otel/metric v1.25.0/go.mod h1:rkDLUSd2lC5lq2dFNrX9LGAbINP5B7WBkC78RXCpH5s= +go.opentelemetry.io/otel/sdk v1.25.0 h1:PDryEJPC8YJZQSyLY5eqLeafHtG+X7FWnf3aXMtxbqo= +go.opentelemetry.io/otel/sdk v1.25.0/go.mod h1:oFgzCM2zdsxKzz6zwpTZYLLQsFwc+K0daArPdIhuxkw= +go.opentelemetry.io/otel/sdk/metric v1.25.0 h1:7CiHOy08LbrxMAp4vWpbiPcklunUshVpAvGBrdDRlGw= +go.opentelemetry.io/otel/sdk/metric v1.25.0/go.mod h1:LzwoKptdbBBdYfvtGCzGwk6GWMA3aUzBOwtQpR6Nz7o= +go.opentelemetry.io/otel/trace v1.25.0 h1:tqukZGLwQYRIFtSQM2u2+yfMVTgGVeqRLPUYx1Dq6RM= +go.opentelemetry.io/otel/trace v1.25.0/go.mod h1:hCCs70XM/ljO+BeQkyFnbK28SBIJ/Emuha+ccrCRT7I= +golang.org/x/sys v0.18.0 h1:DBdB3niSjOA/O0blCZBqDefyWNYveAYMNF1Wum0DYQ4= +golang.org/x/sys v0.18.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA= +gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA= +gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM= diff --git a/meter/provider.go b/meter/provider.go new file mode 100644 index 0000000..721185c --- /dev/null +++ b/meter/provider.go @@ -0,0 +1,115 @@ +package meter + +import ( + "context" + "fmt" + "os" + "path/filepath" + + "go.opentelemetry.io/otel" + "go.opentelemetry.io/otel/attribute" + "go.opentelemetry.io/otel/sdk/metric" + "go.opentelemetry.io/otel/sdk/resource" + semconv "go.opentelemetry.io/otel/semconv/v1.17.0" +) + +func WithServiceName(name string) func(*Option) error { + return func(o *Option) error { + o.serviceName = name + + return nil + } +} + +func WithAttributes(attrs ...attribute.KeyValue) func(context.Context, *Option) error { + return func(_ context.Context, o *Option) error { + o.attributes = attrs + + return nil + } +} + +func WithExtraResource(opts ...resource.Option) func(context.Context, *Option) error { + return func(_ context.Context, o *Option) error { + o.extraResource = opts + + return nil + } +} + +func WithReader(reader metric.Reader) func(context.Context, *Option) error { + return func(_ context.Context, o *Option) error { + o.reader = reader + + return nil + } +} + +type Option struct { + reader metric.Reader + serviceName string + attributes []attribute.KeyValue + extraResource []resource.Option +} + +func newOptions(ctx context.Context, opts ...func(context.Context, *Option) error) (Option, error) { + option := Option{ + serviceName: filepath.Base(os.Args[0]), + extraResource: []resource.Option{ + resource.WithOS(), + resource.WithProcess(), + resource.WithContainer(), + resource.WithHost(), + }, + } + + for idx, opt := range opts { + if err := opt(ctx, &option); err != nil { + return option, fmt.Errorf("option[%d]:%w", idx, err) + } + } + + return option, nil +} + +func New(ctx context.Context, opts ...func(context.Context, *Option) error) (*metric.MeterProvider, error) { + option, err := newOptions(ctx, opts...) + if err != nil { + return nil, fmt.Errorf("configure:%w", err) + } + + extraResources, eerr := resource.New( + ctx, + append( + option.extraResource, + resource.WithAttributes( + append( + option.attributes, + semconv.ServiceName(option.serviceName), + )..., + ), + )..., + ) + if eerr != nil { + return nil, fmt.Errorf("create extra resource: %w", eerr) + } + + res, rerr := resource.Merge( + resource.Default(), + extraResources, + ) + if rerr != nil { + return nil, fmt.Errorf("merge resource: %w", rerr) + } + + provOption := make([]metric.Option, 0, 2) + + if option.reader != nil { + provOption = append(provOption, metric.WithReader(option.reader)) + } + + meterProvider := metric.NewMeterProvider(append(provOption, metric.WithResource(res))...) + otel.SetMeterProvider(meterProvider) + + return meterProvider, nil +}