CredentialCallOption.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.arrow.flight.grpc;

import io.grpc.stub.AbstractStub;
import java.util.function.Consumer;
import org.apache.arrow.flight.CallHeaders;
import org.apache.arrow.flight.CallOptions;

/** Method option for supplying credentials to method calls. */
public class CredentialCallOption implements CallOptions.GrpcCallOption {
  private final Consumer<CallHeaders> credentialWriter;

  public CredentialCallOption(Consumer<CallHeaders> credentialWriter) {
    this.credentialWriter = credentialWriter;
  }

  @Override
  public <T extends AbstractStub<T>> T wrapStub(T stub) {
    return stub.withCallCredentials(new CallCredentialAdapter(credentialWriter));
  }
}