config: unify BasicService config within existing services

There are no changes visible from the user side (at least for those
users who doesn't put Prometheus's or pprof's port in quotes), just
internal refactoring. From now and on, BasicService configuration is
used by RPC server config, TLS for RPC server, pprof and Prometheus.

cli/server/server_test.go

@@ -330,8 +330,10 @@ func TestConfigureAddresses(t *testing.T) {
 		cfg := &config.ApplicationConfiguration{
 			Address: defaultAddress,
 			RPC: config.RPC{
+				BasicService: config.BasicService{
 					Address: customAddress,
 				},
+			},
 		}
 		configureAddresses(cfg)
 		require.Equal(t, cfg.RPC.Address, customAddress)

internal/testserdes/testing.go

@@ -7,6 +7,7 @@ import (
 	"github.com/nspcc-dev/neo-go/pkg/io"
 	"github.com/nspcc-dev/neo-go/pkg/vm/stackitem"
 	"github.com/stretchr/testify/require"
+	"gopkg.in/yaml.v3"
 )
 
 // MarshalUnmarshalJSON checks if the expected stays the same after
@@ -18,6 +19,15 @@ func MarshalUnmarshalJSON(t *testing.T, expected, actual interface{}) {
 	require.Equal(t, expected, actual)
 }
 
+// MarshalUnmarshalYAML checks if the expected stays the same after
+// marshal/unmarshal via YAML.
+func MarshalUnmarshalYAML(t *testing.T, expected, actual interface{}) {
+	data, err := yaml.Marshal(expected)
+	require.NoError(t, err)
+	require.NoError(t, yaml.Unmarshal(data, actual))
+	require.Equal(t, expected, actual)
+}
+
 // EncodeDecodeBinary checks if the expected stays the same after
 // serializing/deserializing via io.Serializable methods.
 func EncodeDecodeBinary(t *testing.T, expected, actual io.Serializable) {

pkg/config/application_config_test.go

@@ -20,3 +20,12 @@ func TestApplicationConfigurationEquals(t *testing.T) {
 	require.NoError(t, err)
 	require.False(t, cfg1.ApplicationConfiguration.EqualsButServices(&cfg2.ApplicationConfiguration))
 }
+
+// TestApplicationConfiguration_UnmarshalRPCBasicService is aimed to check that BasicService
+// config of RPC service can be properly unmarshalled.
+func TestApplicationConfiguration_UnmarshalRPCBasicService(t *testing.T) {
+	cfg, err := LoadFile(filepath.Join("..", "..", "config", "protocol.mainnet.yml"))
+	require.NoError(t, err)
+	require.True(t, cfg.ApplicationConfiguration.RPC.Enabled)
+	require.Equal(t, uint16(10332), cfg.ApplicationConfiguration.RPC.Port)
+}

pkg/config/basic_service.go

@@ -1,8 +1,19 @@
 package config
 
-// BasicService is used for simple services like Pprof or Prometheus monitoring.
+import (
+	"net"
+	"strconv"
+)
+
+// BasicService is used as a simple base for node services like Pprof, RPC or
+// Prometheus monitoring.
 type BasicService struct {
 	Enabled bool   `yaml:"Enabled"`
 	Address string `yaml:"Address"`
-	Port    string `yaml:"Port"`
+	Port    uint16 `yaml:"Port"`
+}
+
+// FormatAddress returns the full service's address in the form of "address:port".
+func (s BasicService) FormatAddress() string {
+	return net.JoinHostPort(s.Address, strconv.FormatUint(uint64(s.Port), 10))
 }

pkg/config/basic_service_test.go

@@ -0,0 +1,19 @@
+package config
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+func TestBasicService_FormatAddress(t *testing.T) {
+	for expected, tc := range map[string]BasicService{
+		"localhost:10332": {Address: "localhost", Port: 10332},
+		"127.0.0.1:0":     {Address: "127.0.0.1"},
+		":0":              {},
+	} {
+		t.Run(expected, func(t *testing.T) {
+			require.Equal(t, expected, tc.FormatAddress())
+		})
+	}
+}

pkg/config/rpc_config.go

@@ -7,8 +7,7 @@ import (
 type (
 	// RPC is an RPC service configuration information.
 	RPC struct {
-		Address              string `yaml:"Address"`
+		BasicService         `yaml:",inline"`
-		Enabled              bool   `yaml:"Enabled"`
 		EnableCORSWorkaround bool `yaml:"EnableCORSWorkaround"`
 		// MaxGasInvoke is the maximum amount of GAS which
 		// can be spent during an RPC call.
@@ -17,7 +16,6 @@ type (
 		MaxFindResultItems     int           `yaml:"MaxFindResultItems"`
 		MaxNEP11Tokens         int           `yaml:"MaxNEP11Tokens"`
 		MaxWebSocketClients    int           `yaml:"MaxWebSocketClients"`
-		Port                   uint16        `yaml:"Port"`
 		SessionEnabled         bool          `yaml:"SessionEnabled"`
 		SessionExpirationTime  int           `yaml:"SessionExpirationTime"`
 		SessionBackedByMPT     bool          `yaml:"SessionBackedByMPT"`
@@ -28,10 +26,8 @@ type (
 
 	// TLS describes SSL/TLS configuration.
 	TLS struct {
-		Address  string `yaml:"Address"`
+		BasicService `yaml:",inline"`
 		CertFile     string `yaml:"CertFile"`
-		Enabled  bool   `yaml:"Enabled"`
-		Port     uint16 `yaml:"Port"`
 		KeyFile      string `yaml:"KeyFile"`
 	}
 )

pkg/services/metrics/pprof.go

@@ -26,7 +26,7 @@ func NewPprofService(cfg config.BasicService, log *zap.Logger) *Service {
 
 	return &Service{
 		Server: &http.Server{
-			Addr:    cfg.Address + ":" + cfg.Port,
+			Addr:    cfg.FormatAddress(),
 			Handler: handler,
 		},
 		config:      cfg,

pkg/services/metrics/prometheus.go

@@ -19,7 +19,7 @@ func NewPrometheusService(cfg config.BasicService, log *zap.Logger) *Service {
 
 	return &Service{
 		Server: &http.Server{
-			Addr:    cfg.Address + ":" + cfg.Port,
+			Addr:    cfg.FormatAddress(),
 			Handler: promhttp.Handler(),
 		},
 		config:      cfg,

pkg/services/rpcsrv/server.go

@@ -255,13 +255,13 @@ var invalidBlockHeightError = func(index int, height int) *neorpc.Error {
 func New(chain Ledger, conf config.RPC, coreServer *network.Server,
 	orc OracleHandler, log *zap.Logger, errChan chan error) Server {
 	httpServer := &http.Server{
-		Addr: conf.Address + ":" + strconv.FormatUint(uint64(conf.Port), 10),
+		Addr: conf.FormatAddress(),
 	}
 
 	var tlsServer *http.Server
 	if cfg := conf.TLSConfig; cfg.Enabled {
 		tlsServer = &http.Server{
-			Addr: net.JoinHostPort(cfg.Address, strconv.FormatUint(uint64(cfg.Port), 10)),
+			Addr: cfg.FormatAddress(),
 		}
 	}