content: /*
   * Licensed to the Apache Software Foundation (ASF) under one or more
   * contributor license agreements.  See the NOTICE file distributed with
   * this work for additional information regarding copyright ownership.
   * The ASF licenses this file to you 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
   *
   * 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.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  package org.apache.calcite.avatica.server;
  
  import org.eclipse.jetty.security.UserStore;
  import org.eclipse.jetty.server.UserIdentity;
  import org.eclipse.jetty.util.security.Credential;
  
  /**
   * Implementation of UserStore which creates users when they do not already exist.
   */
  public class AvaticaUserStore extends UserStore {
    private static final Credential USER_CREDENTIAL = Credential.getCredential("");
  
    public static final String AVATICA_USER_ROLE = "avatica-user";
  
    private static final String[] USER_ROLES = new String[] {AVATICA_USER_ROLE};
  
    @Override public UserIdentity getUserIdentity(String userName) {
      UserIdentity userId = super.getUserIdentity(userName);
      if (userId != null) {
        return userId;
      }
  
      // Do we need to be concerned about the recursion?
      addUser(userName, USER_CREDENTIAL, USER_ROLES);
      return getUserIdentity(userName);
    }
  }
  
  // End AvaticaUserStore.java
  