Added required methods to OAuth2Service

 /**
  * Copyright © 2016-2020 The Thingsboard Authors
- *
+ * <p>
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
+ * <p>
+ * http://www.apache.org/licenses/LICENSE-2.0
+ * <p>
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
@@ -15,6 +15,9 @@
  */
 package org.thingsboard.server.dao.oauth2;
 
+import org.thingsboard.server.common.data.id.CustomerId;
+import org.thingsboard.server.common.data.id.EntityId;
+import org.thingsboard.server.common.data.id.TenantId;
 import org.thingsboard.server.common.data.oauth2.OAuth2ClientInfo;
 import org.thingsboard.server.common.data.oauth2.OAuth2ClientRegistration;
 
@@ -24,4 +27,24 @@ public interface OAuth2Service {
     OAuth2ClientRegistration getClientRegistration(String registrationId);
 
     List<OAuth2ClientInfo> getOAuth2Clients();
+
+    List<OAuth2ClientRegistration> getSystemOAuth2ClientRegistrations(TenantId tenantId);
+
+    List<OAuth2ClientRegistration> getTenantOAuth2ClientRegistrations(TenantId tenantId);
+
+    List<OAuth2ClientRegistration> getCustomerOAuth2ClientRegistrations(TenantId tenantId, CustomerId customerId);
+
+    OAuth2ClientRegistration saveSystemOAuth2ClientRegistration(OAuth2ClientRegistration clientRegistration);
+
+    OAuth2ClientRegistration saveTenantOAuth2ClientRegistration(TenantId tenantId, OAuth2ClientRegistration clientRegistration);
+
+    OAuth2ClientRegistration saveCustomerOAuth2ClientRegistration(TenantId tenantId, CustomerId customerId, OAuth2ClientRegistration clientRegistration);
+
+    void deleteDomainOAuth2ClientRegistrationByEntityId(TenantId tenantId, EntityId entityId);
+
+    boolean isOAuth2ClientRegistrationAllowed(TenantId tenantId, EntityId entityId);
+
+    boolean isCustomerOAuth2ClientRegistrationAllowed(TenantId tenantId);
+
+
 }

@@ -18,6 +18,9 @@ package org.thingsboard.server.dao.oauth2;
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Service;
+import org.thingsboard.server.common.data.id.CustomerId;
+import org.thingsboard.server.common.data.id.EntityId;
+import org.thingsboard.server.common.data.id.TenantId;
 import org.thingsboard.server.common.data.oauth2.*;
 
 import java.util.Collections;
@@ -53,6 +56,51 @@ public class OAuth2ServiceImpl implements OAuth2Service {
     }
 
     @Override
+    public List<OAuth2ClientRegistration> getSystemOAuth2ClientRegistrations(TenantId tenantId) {
+        return null;
+    }
+
+    @Override
+    public List<OAuth2ClientRegistration> getTenantOAuth2ClientRegistrations(TenantId tenantId) {
+        return null;
+    }
+
+    @Override
+    public List<OAuth2ClientRegistration> getCustomerOAuth2ClientRegistrations(TenantId tenantId, CustomerId customerId) {
+        return null;
+    }
+
+    @Override
+    public OAuth2ClientRegistration saveSystemOAuth2ClientRegistration(OAuth2ClientRegistration clientRegistration) {
+        return null;
+    }
+
+    @Override
+    public OAuth2ClientRegistration saveTenantOAuth2ClientRegistration(TenantId tenantId, OAuth2ClientRegistration clientRegistration) {
+        return null;
+    }
+
+    @Override
+    public OAuth2ClientRegistration saveCustomerOAuth2ClientRegistration(TenantId tenantId, CustomerId customerId, OAuth2ClientRegistration clientRegistration) {
+        return null;
+    }
+
+    @Override
+    public void deleteDomainOAuth2ClientRegistrationByEntityId(TenantId tenantId, EntityId entityId) {
+
+    }
+
+    @Override
+    public boolean isOAuth2ClientRegistrationAllowed(TenantId tenantId, EntityId entityId) {
+        return false;
+    }
+
+    @Override
+    public boolean isCustomerOAuth2ClientRegistrationAllowed(TenantId tenantId) {
+        return false;
+    }
+
+    @Override
     public OAuth2ClientRegistration getClientRegistration(String registrationId) {
         if (oauth2Configuration == null || !oauth2Configuration.isEnabled()) return null;
         OAuth2Client oAuth2Client = oauth2Configuration.getClients() == null ? null : oauth2Configuration.getClients().get(registrationId);