config: move metrics.Config into config.BasicService

Config package should be as lightweight as possible and now it depends on the
whole metrics package just to get one structure from it.

cli/server/server_test.go

@@ -10,7 +10,6 @@ import (
 	"github.com/nspcc-dev/neo-go/pkg/config"
 	"github.com/nspcc-dev/neo-go/pkg/config/netmode"
 	"github.com/nspcc-dev/neo-go/pkg/core/storage"
-	"github.com/nspcc-dev/neo-go/pkg/network/metrics"
 	"github.com/nspcc-dev/neo-go/pkg/rpc"
 	"github.com/stretchr/testify/require"
 	"github.com/urfave/cli"
@@ -317,7 +316,7 @@ func TestConfigureAddresses(t *testing.T) {
 	t.Run("custom Pprof address", func(t *testing.T) {
 		cfg := &config.ApplicationConfiguration{
 			Address: defaultAddress,
-			Pprof: metrics.Config{
+			Pprof: config.BasicService{
 				Address: customAddress,
 			},
 		}
@@ -330,7 +329,7 @@ func TestConfigureAddresses(t *testing.T) {
 	t.Run("custom Prometheus address", func(t *testing.T) {
 		cfg := &config.ApplicationConfiguration{
 			Address: defaultAddress,
-			Prometheus: metrics.Config{
+			Prometheus: config.BasicService{
 				Address: customAddress,
 			},
 		}

pkg/config/application_config.go

@@ -2,7 +2,6 @@ package config
 
 import (
 	"github.com/nspcc-dev/neo-go/pkg/core/storage"
-	"github.com/nspcc-dev/neo-go/pkg/network/metrics"
 	"github.com/nspcc-dev/neo-go/pkg/rpc"
 )
 
@@ -19,8 +18,8 @@ type ApplicationConfiguration struct {
 	NodePort          uint16                  `yaml:"NodePort"`
 	PingInterval      int64                   `yaml:"PingInterval"`
 	PingTimeout       int64                   `yaml:"PingTimeout"`
-	Pprof             metrics.Config          `yaml:"Pprof"`
+	Pprof             BasicService            `yaml:"Pprof"`
-	Prometheus        metrics.Config          `yaml:"Prometheus"`
+	Prometheus        BasicService            `yaml:"Prometheus"`
 	ProtoTickInterval int64                   `yaml:"ProtoTickInterval"`
 	Relay             bool                    `yaml:"Relay"`
 	RPC               rpc.Config              `yaml:"RPC"`

pkg/config/basic_service.go

@@ -0,0 +1,8 @@
+package config
+
+// BasicService is used for simple services like Pprof or Prometheus monitoring.
+type BasicService struct {
+	Enabled bool   `yaml:"Enabled"`
+	Address string `yaml:"Address"`
+	Port    string `yaml:"Port"`
+}

pkg/network/metrics/metrics.go

@@ -4,24 +4,18 @@ import (
 	"context"
 	"net/http"
 
+	"github.com/nspcc-dev/neo-go/pkg/config"
 	"go.uber.org/zap"
 )
 
 // Service serves metrics.
 type Service struct {
 	*http.Server
-	config      Config
+	config      config.BasicService
 	log         *zap.Logger
 	serviceType string
 }
 
-// Config config used for monitoring.
-type Config struct {
-	Enabled bool   `yaml:"Enabled"`
-	Address string `yaml:"Address"`
-	Port    string `yaml:"Port"`
-}
-
 // Start runs http service with the exposed endpoint on the configured port.
 func (ms *Service) Start() {
 	if ms.config.Enabled {

pkg/network/metrics/pprof.go

@@ -4,6 +4,7 @@ import (
 	"net/http"
 	"net/http/pprof"
 
+	"github.com/nspcc-dev/neo-go/pkg/config"
 	"go.uber.org/zap"
 )
 
@@ -11,7 +12,7 @@ import (
 type PprofService Service
 
 // NewPprofService creates a new service for gathering pprof metrics.
-func NewPprofService(cfg Config, log *zap.Logger) *Service {
+func NewPprofService(cfg config.BasicService, log *zap.Logger) *Service {
 	if log == nil {
 		return nil
 	}

pkg/network/metrics/prometheus.go

@@ -3,6 +3,7 @@ package metrics
 import (
 	"net/http"
 
+	"github.com/nspcc-dev/neo-go/pkg/config"
 	"github.com/prometheus/client_golang/prometheus/promhttp"
 	"go.uber.org/zap"
 )
@@ -11,7 +12,7 @@ import (
 type PrometheusService Service
 
 // NewPrometheusService creates a new service for gathering prometheus metrics.
-func NewPrometheusService(cfg Config, log *zap.Logger) *Service {
+func NewPrometheusService(cfg config.BasicService, log *zap.Logger) *Service {
 	if log == nil {
 		return nil
 	}