/
server.go
69 lines (62 loc) · 1.43 KB
/
server.go
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package main
import (
"context"
"errors"
"log"
"os"
"os/signal"
"syscall"
"github.com/hi20160616/ms-kyodonews/configs"
"github.com/hi20160616/ms-kyodonews/internal/job"
"github.com/hi20160616/ms-kyodonews/internal/server"
"golang.org/x/sync/errgroup"
)
func main() {
defer func() {
if r := recover(); r != nil {
log.Printf("Recovered: \n%v\n", r)
}
}()
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
g, ctx := errgroup.WithContext(ctx)
// MS
g.Go(func() error {
log.Printf("[%s] MS start at: %s", configs.Data.MS["kyodonews"].Title, configs.Data.MS["kyodonews"].Addr)
return server.Start(ctx)
})
g.Go(func() error {
<-ctx.Done() // wait for stop signal
return server.Stop(ctx)
})
// Job
g.Go(func() error {
log.Printf("[%s] Job is working", configs.Data.MS["kyodonews"].Title)
return job.Crawl(ctx)
})
g.Go(func() error {
<-ctx.Done() // wait for stop signal
return job.Stop(ctx)
})
// Elegant stop
c := make(chan os.Signal, 1)
sigs := []os.Signal{syscall.SIGTERM, syscall.SIGQUIT, syscall.SIGINT}
signal.Notify(c, sigs...)
g.Go(func() error {
select {
case <-ctx.Done():
return ctx.Err()
case sig := <-c:
log.Printf("signal caught: %s ready to quit...", sig.String())
cancel()
}
return nil
})
if err := g.Wait(); err != nil {
if !errors.Is(err, context.Canceled) {
log.Printf("not canceled by context: %s", err)
} else {
log.Println(err)
}
}
}