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main.go
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main.go
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package main
import (
"context"
"fmt"
"github.com/smartpcr/go-otel/pkg/ot"
"os"
"os/signal"
)
func main() {
ctx := context.Background()
ctx, cancel := context.WithCancel(ctx)
c := make(chan os.Signal, 1)
signal.Notify(c, os.Interrupt, os.Kill)
defer func() {
signal.Stop(c)
cancel()
}()
// Run until signaled or the context expires.
go func() {
select {
case <-c:
fmt.Println("CTRL-C")
gracefulStop()
cancel()
case <-ctx.Done():
gracefulStop()
}
}()
fmt.Println("registering logger")
logger := ot.RegisterLogger(ctx)
logger.Infof("starting %s", ServiceName)
logger.Infof("registering tracing at %s", config.Receiver.Endpoint)
err := ot.RegisterTracing(ctx, config.Receiver.Endpoint, ServiceName, logger)
if err != nil {
panic(err)
}
ctx, span, startupLogger := ot.StartSpanLogger(ctx)
defer span.End()
span.AddEvent("test event")
startupLogger.Infof("test log")
logger.Infof("registering metrics at %s", config.Receiver.Endpoint)
metric, err := ot.RegisterOtelMetrics(ctx, config.Receiver.Endpoint, ServiceName)
if err != nil {
panic(err)
}
counter, err := metric.Meter("test").Int64Counter("test.counter")
if err != nil {
panic(err)
}
counter.Add(ctx, 1)
}
func gracefulStop() {
fmt.Println("graceful stop")
}