NoopClientStream.java

/*
 * Copyright 2015, Google Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 *    * Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 *    * Redistributions in binary form must reproduce the above
 * copyright notice, this list of conditions and the following disclaimer
 * in the documentation and/or other materials provided with the
 * distribution.
 *
 *    * Neither the name of Google Inc. nor the names of its
 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

package io.grpc.internal;

import io.grpc.Attributes;
import io.grpc.Compressor;
import io.grpc.Decompressor;
import io.grpc.Status;
import java.io.InputStream;

/**
 * An implementation of {@link ClientStream} that silently does nothing for the operations.
 */
public class NoopClientStream implements ClientStream {
  public static final NoopClientStream INSTANCE = new NoopClientStream();

  @Override
  public void setAuthority(String authority) {}

  @Override
  public void start(ClientStreamListener listener) {}

  @Override
  public Attributes getAttributes() {
    return Attributes.EMPTY;
  }

  @Override
  public void request(int numMessages) {}

  @Override
  public void writeMessage(InputStream message) {}

  @Override
  public void flush() {}

  @Override
  public boolean isReady() {
    return false;
  }

  @Override
  public void cancel(Status status) {}

  @Override
  public void halfClose() {}

  @Override
  public void setMessageCompression(boolean enable) {
    // noop
  }

  @Override
  public void setCompressor(Compressor compressor) {}

  @Override
  public void setDecompressor(Decompressor decompressor) {}

  @Override
  public void setMaxInboundMessageSize(int maxSize) {}

  @Override
  public void setMaxOutboundMessageSize(int maxSize) {}
}