package checks import ( "crypto/tls" "flag" "fmt" "io/ioutil" "log" "net" "os" "testing" "time" "github.com/hashicorp/consul/agent/mock" "github.com/hashicorp/consul/agent/structs" "github.com/hashicorp/consul/api" "github.com/hashicorp/consul/sdk/testutil/retry" "github.com/hashicorp/go-hclog" "google.golang.org/grpc" "google.golang.org/grpc/health" hv1 "google.golang.org/grpc/health/grpc_health_v1" ) var ( port int server string svcHealthy string svcUnhealthy string svcMissing string ) func startServer() (*health.Server, *grpc.Server) { listener, err := net.Listen("tcp", fmt.Sprintf(":%d", port)) if err != nil { log.Fatalf("failed to listen: %v", err) } grpcServer := grpc.NewServer() server := health.NewServer() hv1.RegisterHealthServer(grpcServer, server) go grpcServer.Serve(listener) return server, grpcServer } func init() { flag.IntVar(&port, "grpc-stub-port", 54321, "port for the gRPC stub server") } func TestMain(m *testing.M) { flag.Parse() healthy := "healthy" unhealthy := "unhealthy" missing := "missing" srv, grpcStubApp := startServer() srv.SetServingStatus(healthy, hv1.HealthCheckResponse_SERVING) srv.SetServingStatus(unhealthy, hv1.HealthCheckResponse_NOT_SERVING) server = fmt.Sprintf("%s:%d", "localhost", port) svcHealthy = fmt.Sprintf("%s/%s", server, healthy) svcUnhealthy = fmt.Sprintf("%s/%s", server, unhealthy) svcMissing = fmt.Sprintf("%s/%s", server, missing) result := 1 defer func() { grpcStubApp.Stop() os.Exit(result) }() result = m.Run() } func TestCheck(t *testing.T) { type args struct { target string timeout time.Duration tlsConfig *tls.Config } tests := []struct { name string args args healthy bool }{ // successes {"should pass for healthy server", args{server, time.Second, nil}, true}, {"should pass for healthy service", args{svcHealthy, time.Second, nil}, true}, // failures {"should fail for unhealthy service", args{svcUnhealthy, time.Second, nil}, false}, {"should fail for missing service", args{svcMissing, time.Second, nil}, false}, {"should timeout for healthy service", args{server, time.Nanosecond, nil}, false}, {"should fail if probe is secure, but server is not", args{server, time.Second, &tls.Config{}}, false}, } for _, tt := range tests { t.Run(tt.name, func(t *testing.T) { probe := NewGrpcHealthProbe(tt.args.target, tt.args.timeout, tt.args.tlsConfig) actualError := probe.Check(tt.args.target) actuallyHealthy := actualError == nil if tt.healthy != actuallyHealthy { t.Errorf("FAIL: %s. Expected healthy %t, but err == %v", tt.name, tt.healthy, actualError) } }) } } func TestGRPC_Proxied(t *testing.T) { t.Parallel() notif := mock.NewNotify() logger := hclog.New(&hclog.LoggerOptions{ Name: uniqueID(), Output: ioutil.Discard, }) statusHandler := NewStatusHandler(notif, logger, 0, 0) cid := structs.NewCheckID("foo", nil) check := &CheckGRPC{ CheckID: cid, GRPC: "", Interval: 10 * time.Millisecond, Logger: logger, ProxyGRPC: server, StatusHandler: statusHandler, } check.Start() defer check.Stop() // If ProxyGRPC is set, check() reqs should go to that address retry.Run(t, func(r *retry.R) { if got, want := notif.Updates(cid), 2; got < want { r.Fatalf("got %d updates want at least %d", got, want) } if got, want := notif.State(cid), api.HealthPassing; got != want { r.Fatalf("got state %q want %q", got, want) } }) } func TestGRPC_NotProxied(t *testing.T) { t.Parallel() notif := mock.NewNotify() logger := hclog.New(&hclog.LoggerOptions{ Name: uniqueID(), Output: ioutil.Discard, }) statusHandler := NewStatusHandler(notif, logger, 0, 0) cid := structs.NewCheckID("foo", nil) check := &CheckGRPC{ CheckID: cid, GRPC: server, Interval: 10 * time.Millisecond, Logger: logger, ProxyGRPC: "", StatusHandler: statusHandler, } check.Start() defer check.Stop() // If ProxyGRPC is not set, check() reqs should go to check.GRPC retry.Run(t, func(r *retry.R) { if got, want := notif.Updates(cid), 2; got < want { r.Fatalf("got %d updates want at least %d", got, want) } if got, want := notif.State(cid), api.HealthPassing; got != want { r.Fatalf("got state %q want %q", got, want) } }) }