ConstantBearerTokenProvider.java

/*
 * 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.remote;

import org.apache.calcite.avatica.BuiltInConnectionProperty;
import org.apache.calcite.avatica.ConnectionConfig;

import java.io.IOException;

public class ConstantBearerTokenProvider implements BearerTokenProvider {
  private String token;

  @Override
  public void init(ConnectionConfig config) throws IOException {
    token = config.getBearerToken();
    if (token == null || token.trim().isEmpty()) {
      throw new UnsupportedOperationException("Config option "
          + BuiltInConnectionProperty.BEARER_TOKEN
          + " must be specified to use ConstantBearerTokenProvider");
    }
  }

  @Override
  public synchronized String obtain(String username) {
    return token;
  }
}