LDAP: Move LDAP globals to Config (#63255)

* structure dtos and private methods

* add basic LDAP service

* use LDAP service in ldap debug API

* lower non fatal error

* remove unused globals

* wip

* remove final globals

* fix tests to use cfg enabled

* restructure errors

* remove logger from globals

* use ldap service in authn

* use ldap service in context handler

* fix failed tests

* fix ldap middleware provides

* fix provides in auth_test.go

pkg/services/authn/authnimpl/service.go

@@ -5,13 +5,13 @@ import (
 	"net/http"
 	"strconv"
 
-	"github.com/grafana/grafana/pkg/infra/remotecache"
 	"github.com/hashicorp/go-multierror"
 	"go.opentelemetry.io/otel/attribute"
 
 	"github.com/grafana/grafana/pkg/infra/kvstore"
 	"github.com/grafana/grafana/pkg/infra/log"
 	"github.com/grafana/grafana/pkg/infra/network"
+	"github.com/grafana/grafana/pkg/infra/remotecache"
 	"github.com/grafana/grafana/pkg/infra/tracing"
 	"github.com/grafana/grafana/pkg/infra/usagestats"
 	"github.com/grafana/grafana/pkg/login/social"
@@ -22,6 +22,7 @@ import (
 	"github.com/grafana/grafana/pkg/services/authn/authnimpl/sync"
 	"github.com/grafana/grafana/pkg/services/authn/clients"
 	"github.com/grafana/grafana/pkg/services/featuremgmt"
+	"github.com/grafana/grafana/pkg/services/ldap/service"
 	"github.com/grafana/grafana/pkg/services/login"
 	"github.com/grafana/grafana/pkg/services/loginattempt"
 	"github.com/grafana/grafana/pkg/services/oauthtoken"
@@ -59,6 +60,7 @@ func ProvideService(
 	authInfoService login.AuthInfoService, renderService rendering.Service,
 	features *featuremgmt.FeatureManager, oauthTokenService oauthtoken.OAuthTokenService,
 	socialService social.Service, cache *remotecache.RemoteCache,
+	ldapService service.LDAP,
 ) *Service {
 	s := &Service{
 		log:            log.New("authn.service"),
@@ -87,7 +89,7 @@ func ProvideService(
 	var proxyClients []authn.ProxyClient
 	var passwordClients []authn.PasswordClient
 	if s.cfg.LDAPEnabled {
-		ldap := clients.ProvideLDAP(cfg)
+		ldap := clients.ProvideLDAP(cfg, ldapService)
 		proxyClients = append(proxyClients, ldap)
 		passwordClients = append(passwordClients, ldap)
 	}