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name: "fxtrace-ci" | ||
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on: | ||
push: | ||
branches: | ||
- "feat**" | ||
- "fix**" | ||
- "hotfix**" | ||
- "chore**" | ||
paths: | ||
- "fxtrace/**.go" | ||
- "fxtrace/go.mod" | ||
- "fxtrace/go.sum" | ||
pull_request: | ||
types: | ||
- opened | ||
- synchronize | ||
- reopened | ||
branches: | ||
- main | ||
paths: | ||
- "fxtrace/**.go" | ||
- "fxtrace/go.mod" | ||
- "fxtrace/go.sum" | ||
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jobs: | ||
ci: | ||
uses: ./.github/workflows/common-ci.yml | ||
secrets: inherit | ||
with: | ||
module: "fxtrace" |
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run: | ||
timeout: 5m | ||
concurrency: 8 | ||
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linters: | ||
enable: | ||
- asasalint | ||
- asciicheck | ||
- bidichk | ||
- bodyclose | ||
- containedctx | ||
- contextcheck | ||
- decorder | ||
- dogsled | ||
- dupl | ||
- durationcheck | ||
- errcheck | ||
- errchkjson | ||
- errname | ||
- errorlint | ||
- forbidigo | ||
- forcetypeassert | ||
- gocognit | ||
- goconst | ||
- gocritic | ||
- gocyclo | ||
- godot | ||
- godox | ||
- gofmt | ||
- goheader | ||
- gomoddirectives | ||
- gomodguard | ||
- goprintffuncname | ||
- gosec | ||
- gosimple | ||
- govet | ||
- grouper | ||
- importas | ||
- ineffassign | ||
- interfacebloat | ||
- logrlint | ||
- maintidx | ||
- makezero | ||
- misspell | ||
- nestif | ||
- nilerr | ||
- nilnil | ||
- nlreturn | ||
- nolintlint | ||
- nosprintfhostport | ||
- prealloc | ||
- predeclared | ||
- promlinter | ||
- reassign | ||
- staticcheck | ||
- tenv | ||
- thelper | ||
- tparallel | ||
- typecheck | ||
- unconvert | ||
- unparam | ||
- unused | ||
- usestdlibvars | ||
- whitespace |
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# Fx Trace Module | ||
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||
[![ci](https://github.com/ankorstore/yokai/actions/workflows/fxtrace-ci.yml/badge.svg)](https://github.com/ankorstore/yokai/actions/workflows/fxtrace-ci.yml) | ||
[![go report](https://goreportcard.com/badge/github.com/ankorstore/yokai/fxtrace)](https://goreportcard.com/report/github.com/ankorstore/yokai/fxtrace) | ||
[![codecov](https://codecov.io/gh/ankorstore/yokai/graph/badge.svg?token=ghUBlFsjhR&flag=fxtrace)](https://app.codecov.io/gh/ankorstore/yokai/tree/main/fxtrace) | ||
[![Deps](https://img.shields.io/badge/osi-deps-blue)](https://deps.dev/go/github.com%2Fankorstore%2Fyokai%2Ffxtrace) | ||
[![PkgGoDev](https://pkg.go.dev/badge/github.com/ankorstore/yokai/fxtrace)](https://pkg.go.dev/github.com/ankorstore/yokai/fxtrace) | ||
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> [Fx](https://uber-go.github.io/fx/) module for [trace](https://github.com/ankorstore/yokai/tree/main/trace). | ||
<!-- TOC --> | ||
* [Installation](#installation) | ||
* [Documentation](#documentation) | ||
* [Dependencies](#dependencies) | ||
* [Loading](#loading) | ||
* [Configuration](#configuration) | ||
* [Override](#override) | ||
* [Testing](#testing) | ||
<!-- TOC --> | ||
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## Installation | ||
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```shell | ||
go get github.com/ankorstore/yokai/fxtrace | ||
``` | ||
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## Documentation | ||
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### Dependencies | ||
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This module is intended to be used alongside the [fxconfig](https://github.com/ankorstore/yokai/tree/main/fxconfig) | ||
module. | ||
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### Loading | ||
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To load the module in your Fx application: | ||
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```go | ||
package main | ||
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import ( | ||
"context" | ||
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"github.com/ankorstore/yokai/config" | ||
"github.com/ankorstore/yokai/fxconfig" | ||
"github.com/ankorstore/yokai/fxtrace" | ||
oteltrace "go.opentelemetry.io/otel/trace" | ||
"go.uber.org/fx" | ||
) | ||
|
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func main() { | ||
fx.New( | ||
fxconfig.FxConfigModule, // load the module dependency | ||
fxtrace.FxTraceModule, // load the module | ||
fx.Invoke(func(tracerProvider oteltrace.TracerProvider) { | ||
// invoke the tracer provider to create a span | ||
_, span := tracerProvider.Tracer("some tracer").Start(context.Background(), "some span") | ||
defer span.End() | ||
}), | ||
).Run() | ||
} | ||
``` | ||
|
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### Configuration | ||
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This module provides the possibility to configure the `processor`: | ||
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- `noop`: to async void traces (default and fallback) | ||
- `stdout`: to async print traces to stdout | ||
- `otlp-grpc`: to async send traces to [OTLP/gRPC](https://opentelemetry.io/docs/specs/otlp/#otlpgrpc) collectors (ex: [Jaeger](https://www.jaegertracing.io/), [Grafana](https://grafana.com/docs/tempo/latest/configuration/grafana-agent/#grafana-agent), etc.) | ||
- `test`: to sync store traces in memory (for testing assertions) | ||
|
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If an error occurs while creating the processor (for example failing OTLP/gRPC connection), the `noop` processor will be | ||
used as safety fallback (to prevent outages). | ||
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This module also provides possibility to configure the `sampler`: | ||
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- `parent-based-always-on`: always on depending on parent (default) | ||
- `parent-based-always-off`: always off depending on parent | ||
- `parent-based-trace-id-ratio`: trace id ratio based depending on parent | ||
- `always-on`: always on | ||
- `always-off`: always off | ||
- `trace-id-ratio`: trace id ratio based | ||
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Example with `stdout` processor (with pretty print) and `parent-based-trace-id-ratio` sampler (ratio=0.5): | ||
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```yaml | ||
# ./configs/config.yaml | ||
app: | ||
name: app | ||
env: dev | ||
version: 0.1.0 | ||
debug: false | ||
modules: | ||
trace: | ||
processor: | ||
type: stdout | ||
options: | ||
pretty: true | ||
sampler: | ||
type: parent-based-trace-id-ratio | ||
options: | ||
ratio: 0.5 | ||
``` | ||
Another example with `otlp-grpc` processor (on jaeger:4317 host) and `always-on` sampler: | ||
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```yaml | ||
# ./configs/config.yaml | ||
app: | ||
name: app | ||
env: dev | ||
version: 0.1.0 | ||
debug: false | ||
modules: | ||
trace: | ||
processor: | ||
type: otlp-grpc | ||
options: | ||
host: jaeger:4317 | ||
sampler: | ||
type: always-on | ||
``` | ||
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### Override | ||
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By default, the `oteltrace.TracerProvider` is created by the [DefaultTracerProviderFactory](https://github.com/ankorstore/yokai/blob/main/trace/factory.go). | ||
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If needed, you can provide your own factory and override the module: | ||
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```go | ||
package main | ||
import ( | ||
"context" | ||
"github.com/ankorstore/yokai/fxconfig" | ||
"github.com/ankorstore/yokai/fxtrace" | ||
"github.com/ankorstore/yokai/trace" | ||
otelsdktrace "go.opentelemetry.io/otel/sdk/trace" | ||
oteltrace "go.opentelemetry.io/otel/trace" | ||
"go.uber.org/fx" | ||
) | ||
type CustomTracerProviderFactory struct{} | ||
func NewCustomTracerProviderFactory() trace.TracerProviderFactory { | ||
return &CustomTracerProviderFactory{} | ||
} | ||
func (f *CustomTracerProviderFactory) Create(options ...trace.TracerProviderOption) (*otelsdktrace.TracerProvider, error) { | ||
return &otelsdktrace.TracerProvider{...}, nil | ||
} | ||
func main() { | ||
fx.New( | ||
fxconfig.FxConfigModule, // load the module dependency | ||
fxtrace.FxTraceModule, // load the module | ||
fx.Decorate(NewCustomTracerProviderFactory), // override the module with a custom factory | ||
fx.Invoke(func(tracerProvider oteltrace.TracerProvider) { // invoke the custom tracer provider | ||
_, span := tracerProvider.Tracer("custom tracer").Start(context.Background(), "custom span") | ||
defer span.End() | ||
}), | ||
).Run() | ||
} | ||
``` | ||
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### Testing | ||
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This module provides the possibility to easily test your trace spans, using the [TestTraceExporter](https://github.com/ankorstore/yokai/blob/main/trace/tracetest/exporter.go) with `modules.trace.processor.type=test`. | ||
|
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```yaml | ||
# ./configs/config.test.yaml | ||
modules: | ||
trace: | ||
processor: | ||
type: test # to send traces to test buffer | ||
``` | ||
|
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You can then test: | ||
|
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```go | ||
package main_test | ||
import ( | ||
"context" | ||
"testing" | ||
"github.com/ankorstore/yokai/fxconfig" | ||
"github.com/ankorstore/yokai/fxtrace" | ||
"github.com/ankorstore/yokai/trace/tracetest" | ||
"go.opentelemetry.io/otel/attribute" | ||
oteltrace "go.opentelemetry.io/otel/trace" | ||
"go.uber.org/fx" | ||
"go.uber.org/fx/fxtest" | ||
) | ||
func TestTracerProvider(t *testing.T) { | ||
t.Setenv("APP_NAME", "test") | ||
t.Setenv("APP_ENV", "test") | ||
var exporter tracetest.TestTraceExporter | ||
fxtest.New( | ||
t, | ||
fx.NopLogger, | ||
fxconfig.FxConfigModule, | ||
fxtrace.FxTraceModule, | ||
fx.Invoke(func(tracerProvider oteltrace.TracerProvider) { | ||
_, span := tracerProvider.Tracer("some tracer").Start( | ||
context.Background(), | ||
"some span", | ||
oteltrace.WithAttributes(attribute.String("some attribute name", "some attribute value")), | ||
) | ||
defer span.End() | ||
}), | ||
fx.Populate(&exporter), // extracts the TestTraceExporter from the Fx container | ||
).RequireStart().RequireStop() | ||
// assertion success | ||
tracetest.AssertHasTraceSpan(t, exporter, "some span", attribute.String("some attribute name", "some attribute value")) | ||
} | ||
``` | ||
|
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See the `trace` module testing [documentation](https://github.com/ankorstore/yokai/tree/main/trace#test-span-processor) for more details. |
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module github.com/ankorstore/yokai/fxtrace | ||
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go 1.20 | ||
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require ( | ||
github.com/ankorstore/yokai/config v1.1.0 | ||
github.com/ankorstore/yokai/fxconfig v1.0.0 | ||
github.com/ankorstore/yokai/trace v1.0.0 | ||
github.com/stretchr/testify v1.8.4 | ||
go.opentelemetry.io/otel v1.16.0 | ||
go.opentelemetry.io/otel/exporters/stdout/stdouttrace v1.16.0 | ||
go.opentelemetry.io/otel/sdk v1.16.0 | ||
go.opentelemetry.io/otel/trace v1.16.0 | ||
go.uber.org/fx v1.20.1 | ||
) | ||
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require ( | ||
github.com/cenkalti/backoff/v4 v4.2.1 // indirect | ||
github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc // indirect | ||
github.com/fsnotify/fsnotify v1.7.0 // indirect | ||
github.com/go-logr/logr v1.2.4 // indirect | ||
github.com/go-logr/stdr v1.2.2 // indirect | ||
github.com/golang/protobuf v1.5.3 // indirect | ||
github.com/grpc-ecosystem/grpc-gateway/v2 v2.7.0 // indirect | ||
github.com/hashicorp/hcl v1.0.0 // indirect | ||
github.com/magiconair/properties v1.8.7 // indirect | ||
github.com/mitchellh/mapstructure v1.5.0 // indirect | ||
github.com/pelletier/go-toml/v2 v2.1.1 // indirect | ||
github.com/pmezard/go-difflib v1.0.1-0.20181226105442-5d4384ee4fb2 // indirect | ||
github.com/sagikazarmark/locafero v0.4.0 // indirect | ||
github.com/sagikazarmark/slog-shim v0.1.0 // indirect | ||
github.com/sourcegraph/conc v0.3.0 // indirect | ||
github.com/spf13/afero v1.11.0 // indirect | ||
github.com/spf13/cast v1.6.0 // indirect | ||
github.com/spf13/pflag v1.0.5 // indirect | ||
github.com/spf13/viper v1.18.2 // indirect | ||
github.com/subosito/gotenv v1.6.0 // indirect | ||
go.opentelemetry.io/otel/exporters/otlp/internal/retry v1.16.0 // indirect | ||
go.opentelemetry.io/otel/exporters/otlp/otlptrace v1.16.0 // indirect | ||
go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc v1.16.0 // indirect | ||
go.opentelemetry.io/otel/metric v1.16.0 // indirect | ||
go.opentelemetry.io/proto/otlp v0.19.0 // indirect | ||
go.uber.org/dig v1.17.1 // indirect | ||
go.uber.org/multierr v1.11.0 // indirect | ||
go.uber.org/zap v1.26.0 // indirect | ||
golang.org/x/exp v0.0.0-20240110193028-0dcbfd608b1e // indirect | ||
golang.org/x/net v0.19.0 // indirect | ||
golang.org/x/sys v0.16.0 // indirect | ||
golang.org/x/text v0.14.0 // indirect | ||
google.golang.org/genproto v0.0.0-20231106174013-bbf56f31fb17 // indirect | ||
google.golang.org/genproto/googleapis/api v0.0.0-20231106174013-bbf56f31fb17 // indirect | ||
google.golang.org/genproto/googleapis/rpc v0.0.0-20231120223509-83a465c0220f // indirect | ||
google.golang.org/grpc v1.59.0 // indirect | ||
google.golang.org/protobuf v1.31.0 // indirect | ||
gopkg.in/ini.v1 v1.67.0 // indirect | ||
gopkg.in/yaml.v3 v3.0.1 // indirect | ||
) |
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