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server.go
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server.go
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package grpc
import (
"fmt"
"log"
"net"
"net/http"
"os"
"google.golang.org/grpc"
"google.golang.org/grpc/credentials"
"google.golang.org/grpc/interop"
testpb "google.golang.org/grpc/interop/grpc_testing"
)
const (
defaultHealthPort = "8080"
defaultH2Port = "8443"
defaultH2CPort = "1110"
defaultTLSCrt = "/etc/serving-cert/tls.crt"
defaultTLSKey = "/etc/serving-cert/tls.key"
)
func lookupEnv(key, defaultVal string) string {
if val, ok := os.LookupEnv(key); ok {
return val
}
return defaultVal
}
func Serve() {
go func() {
crt := lookupEnv("TLS_CRT", defaultTLSCrt)
key := lookupEnv("TLS_KEY", defaultTLSKey)
creds, err := credentials.NewServerTLSFromFile(crt, key)
if err != nil {
log.Fatalf("NewServerTLSFromFile failed: %v", err)
}
server := grpc.NewServer(grpc.Creds(creds))
testpb.RegisterTestServiceServer(server, interop.NewTestServer())
lis, err := net.Listen("tcp", ":"+lookupEnv("H2_PORT", defaultH2Port))
if err != nil {
log.Fatalf("listen failed: %v", err)
}
log.Printf("Serving h2 at: %v", lis.Addr())
if err = server.Serve(lis); err != nil {
log.Fatalf("failed to serve: %v", err)
}
}()
go func() {
server := grpc.NewServer()
testpb.RegisterTestServiceServer(server, interop.NewTestServer())
lis, err := net.Listen("tcp", ":"+lookupEnv("H2C_PORT", defaultH2CPort))
if err != nil {
log.Fatalf("listen failed: %v", err)
}
log.Printf("Serving h2c at: %v", lis.Addr())
if err = server.Serve(lis); err != nil {
log.Fatalf("failed to serve: %v", err)
}
}()
mux := http.NewServeMux()
mux.HandleFunc("/healthz", func(w http.ResponseWriter, r *http.Request) {
fmt.Fprint(w, "ready")
})
port := lookupEnv("HTTP_PORT", defaultHealthPort)
log.Printf("Listening for health checks on port %v\n", port)
if err := http.ListenAndServe(":"+port, mux); err != nil {
log.Fatal(err)
}
}