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NettyTestUtil.java
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NettyTestUtil.java
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/*
* Copyright 2014 The gRPC Authors
*
* Licensed 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 io.grpc.netty;
import static io.netty.util.CharsetUtil.UTF_8;
import com.google.common.io.ByteStreams;
import io.grpc.internal.ObjectPool;
import io.netty.buffer.ByteBuf;
import io.netty.buffer.Unpooled;
import java.io.ByteArrayOutputStream;
import java.io.DataOutputStream;
import java.io.InputStream;
import java.util.concurrent.Executor;
/**
* Utility methods for supporting Netty tests.
*/
public class NettyTestUtil {
static String toString(InputStream in) throws Exception {
byte[] bytes = new byte[in.available()];
ByteStreams.readFully(in, bytes);
return new String(bytes, UTF_8);
}
static ByteBuf messageFrame(String message) throws Exception {
ByteArrayOutputStream os = new ByteArrayOutputStream();
DataOutputStream dos = new DataOutputStream(os);
dos.write(message.getBytes(UTF_8));
dos.close();
// Write the compression header followed by the context frame.
return compressionFrame(os.toByteArray());
}
static ByteBuf compressionFrame(byte[] data) {
ByteBuf buf = Unpooled.buffer();
buf.writeByte(0);
buf.writeInt(data.length);
buf.writeBytes(data);
return buf;
}
// A simple implementation of ObjectPool<Executor> that could track if the resource is returned.
public static class TrackingObjectPoolForTest implements ObjectPool<Executor> {
private boolean inUse;
public TrackingObjectPoolForTest() { }
@Override
public Executor getObject() {
inUse = true;
return new Executor() {
@Override
public void execute(Runnable var1) {
var1.run();
}
};
}
@Override
public Executor returnObject(Object object) {
inUse = false;
return null;
}
public boolean isInUse() {
return this.inUse;
}
}
}