Add internal provider

Co-authored-by: Julien Salleyron <julien.salleyron@gmail.com>

pkg/server/service/managerfactory.go

@@ -0,0 +1,61 @@
+package service
+
+import (
+	"net/http"
+
+	"github.com/containous/traefik/v2/pkg/api"
+	"github.com/containous/traefik/v2/pkg/config/runtime"
+	"github.com/containous/traefik/v2/pkg/config/static"
+	"github.com/containous/traefik/v2/pkg/metrics"
+	"github.com/containous/traefik/v2/pkg/safe"
+)
+
+// ManagerFactory a factory of service manager.
+type ManagerFactory struct {
+	metricsRegistry metrics.Registry
+
+	defaultRoundTripper http.RoundTripper
+
+	api              func(configuration *runtime.Configuration) http.Handler
+	restHandler      http.Handler
+	dashboardHandler http.Handler
+	metricsHandler   http.Handler
+	pingHandler      http.Handler
+
+	routinesPool *safe.Pool
+}
+
+// NewManagerFactory creates a new ManagerFactory.
+func NewManagerFactory(staticConfiguration static.Configuration, routinesPool *safe.Pool, metricsRegistry metrics.Registry) *ManagerFactory {
+	factory := &ManagerFactory{
+		metricsRegistry:     metricsRegistry,
+		defaultRoundTripper: setupDefaultRoundTripper(staticConfiguration.ServersTransport),
+		routinesPool:        routinesPool,
+	}
+
+	if staticConfiguration.API != nil {
+		factory.api = api.NewBuilder(staticConfiguration)
+
+		if staticConfiguration.API.Dashboard {
+			factory.dashboardHandler = http.FileServer(staticConfiguration.API.DashboardAssets)
+		}
+	}
+
+	if staticConfiguration.Providers != nil && staticConfiguration.Providers.Rest != nil {
+		factory.restHandler = staticConfiguration.Providers.Rest.CreateRouter()
+	}
+
+	if staticConfiguration.Metrics != nil && staticConfiguration.Metrics.Prometheus != nil {
+		factory.metricsHandler = metrics.PrometheusHandler()
+	}
+
+	factory.pingHandler = staticConfiguration.Ping
+
+	return factory
+}
+
+// Build creates a service manager.
+func (f *ManagerFactory) Build(configuration *runtime.Configuration) *InternalHandlers {
+	svcManager := NewManager(configuration.Services, f.defaultRoundTripper, f.metricsRegistry, f.routinesPool)
+	return NewInternalHandlers(f.api, configuration, f.restHandler, f.metricsHandler, f.pingHandler, f.dashboardHandler, svcManager)
+}