core/src/main/java/io/grpc/internal/NoopClientStream.java

/*
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 * copyright notice, this list of conditions and the following disclaimer
 * in the documentation and/or other materials provided with the
 * distribution.
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 * 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
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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) {}
}