SSO: Add LDAP fallback strategy for SSO settings service (#88905)

* add root and client certificate value fields for LDAP

* update error messages for connection error

* add LDAP fallback strategy for SSO settings service

* fix params for sso service provider

* fix params for sso service provider

* sort imports

* sort imports

* replace json.Number with int64 in config map

* remove type assertions

pkg/services/ssosettings/ssosettingsimpl/service.go

@@ -18,6 +18,7 @@ import (
 	ac "github.com/grafana/grafana/pkg/services/accesscontrol"
 	"github.com/grafana/grafana/pkg/services/auth/identity"
 	"github.com/grafana/grafana/pkg/services/featuremgmt"
+	"github.com/grafana/grafana/pkg/services/ldap/service"
 	"github.com/grafana/grafana/pkg/services/licensing"
 	"github.com/grafana/grafana/pkg/services/secrets"
 	"github.com/grafana/grafana/pkg/services/ssosettings"
@@ -47,9 +48,10 @@ type Service struct {
 func ProvideService(cfg *setting.Cfg, sqlStore db.DB, ac ac.AccessControl,
 	routeRegister routing.RouteRegister, features featuremgmt.FeatureToggles,
 	secrets secrets.Service, usageStats usagestats.Service, registerer prometheus.Registerer,
-	settingsProvider setting.Provider, licensing licensing.Licensing) *Service {
+	settingsProvider setting.Provider, licensing licensing.Licensing, ldap service.LDAP) *Service {
 	fbStrategies := []ssosettings.FallbackStrategy{
 		strategies.NewOAuthStrategy(cfg),
+		strategies.NewLDAPStrategy(cfg, ldap),
 	}
 
 	configurableProviders := make(map[string]bool)

pkg/services/ssosettings/ssosettingsimpl/service_test.go

@@ -22,6 +22,7 @@ import (
 	"github.com/grafana/grafana/pkg/services/accesscontrol"
 	"github.com/grafana/grafana/pkg/services/accesscontrol/acimpl"
 	"github.com/grafana/grafana/pkg/services/featuremgmt"
+	"github.com/grafana/grafana/pkg/services/ldap/service"
 	"github.com/grafana/grafana/pkg/services/licensing/licensingtest"
 	secretsFakes "github.com/grafana/grafana/pkg/services/secrets/fakes"
 	"github.com/grafana/grafana/pkg/services/ssosettings"
@@ -1555,7 +1556,7 @@ func Test_ProviderService(t *testing.T) {
 				"azuread",
 				"okta",
 			},
-			strategiesLength: 1,
+			strategiesLength: 2,
 		},
 		{
 			name:             "should return all fallback strategies and it should return all OAuth providers but not SAML because the licensing feature is enabled but the configurable provider is not setup",
@@ -1569,7 +1570,7 @@ func Test_ProviderService(t *testing.T) {
 				"azuread",
 				"okta",
 			},
-			strategiesLength: 2,
+			strategiesLength: 3,
 		},
 		{
 			name:             "should return all fallback strategies and it should return all OAuth providers and SAML because the licensing feature is enabled and the provider is setup",
@@ -1585,7 +1586,7 @@ func Test_ProviderService(t *testing.T) {
 				"okta",
 				"saml",
 			},
-			strategiesLength: 2,
+			strategiesLength: 3,
 		},
 	}
 	for _, tc := range tests {
@@ -1647,6 +1648,7 @@ func setupTestEnv(t *testing.T, isLicensingEnabled, keepFallbackStratergies, sam
 		prometheus.NewRegistry(),
 		&setting.OSSImpl{Cfg: cfg},
 		licensing,
+		service.ProvideService(cfg),
 	)
 
 	// overriding values for exposed fields