121 lines
2.8 KiB
Go
121 lines
2.8 KiB
Go
package main
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import (
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"context"
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"fmt"
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"log"
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"os"
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"os/signal"
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"time"
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"git.ma-al.com/maal-libraries/observer/pkg/attr/layer_attr"
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"git.ma-al.com/maal-libraries/observer/pkg/event"
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"git.ma-al.com/maal-libraries/observer/pkg/exporters"
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"git.ma-al.com/maal-libraries/observer/pkg/exporters/console_exporter"
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tracing "git.ma-al.com/maal-libraries/observer/pkg/fiber_tracing"
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"git.ma-al.com/maal-libraries/observer/pkg/level"
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"github.com/gofiber/fiber/v2"
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"go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracehttp"
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"go.opentelemetry.io/otel/trace"
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)
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func main() {
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main := fiber.New()
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exps := make([]exporters.TraceExporter, 0)
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exps = append(exps, exporters.DevConsoleExporter(console_exporter.ProcessorOptions{}))
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gelfExp, err := exporters.GelfExporter()
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if err == nil {
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exps = append(exps, gelfExp)
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}
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jaegerExp, err := exporters.OtlpHTTPExporter(otlptracehttp.WithEndpointURL("http://localhost:4318/v1/traces"))
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if err == nil {
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exps = append(exps, jaegerExp)
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}
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main.Use(tracing.NewMiddleware(tracing.Config{
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AppName: "example",
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Version: "0.0.0",
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ServiceProvider: "maal",
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Exporters: exps,
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}))
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defer tracing.ShutdownTracer()
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main.Use(func(c *fiber.Ctx) error {
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span := tracing.SpanFromContext(c)
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span.AddEvent("pushed into a span an event from middleware")
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span = trace.SpanFromContext(c.UserContext())
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span.AddEvent("span also available from c.UserContext()")
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return c.Next()
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})
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main.Get("/", Handler)
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main.Get("/just/some/more/complex/path/:with/params", Handler)
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// handle interrupts (shutdown)
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c := make(chan os.Signal, 1)
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signal.Notify(c, os.Interrupt)
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go func() {
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oscall := <-c
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log.Printf("system call: %+v", oscall)
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main.Shutdown()
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}()
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if err := main.Listen(fmt.Sprintf(":%d", 3344)); err != nil {
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log.Panic(err)
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}
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fmt.Println("Shutting down...")
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}
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func Handler(c *fiber.Ctx) error {
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ctx, span := tracing.FStart(c, layer_attr.Handler{
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Level: level.DEBUG,
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}.AsOpts())
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defer span.End()
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event.NewInSpan(event.Event{
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Level: level.WARN,
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ShortMessage: "a warning event",
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}, span)
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err := Serv(ctx)
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if err != nil {
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return event.NewErrInSpan(event.Error{Err: err, Level: level.ERR}, span)
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}
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return c.SendStatus(fiber.StatusOK)
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}
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func Serv(ctx context.Context) *fiber.Error {
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ctx, span := tracing.Start(ctx, "service span", layer_attr.Service{
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Level: level.INFO,
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Name: "some service",
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}.AsOpts())
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defer span.End()
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for range []int{1, 2, 3} {
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time.Sleep(time.Millisecond * 100)
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}
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err := Repo(ctx)
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if err != nil {
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return fiber.NewError(500, "xd")
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}
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return fiber.NewError(500, "x")
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}
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func Repo(ctx context.Context) error {
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ctx, span := tracing.Start(ctx, "repo span", layer_attr.Repo{
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Level: level.DEBUG,
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Name: "some repo",
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}.AsOpts())
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defer span.End()
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for range []int{1, 2, 3} {
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time.Sleep(time.Millisecond * 100)
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}
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return nil
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}
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