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package org.glassfish.tyrus.container.grizzly.client;
import java.nio.ByteBuffer;
import java.util.logging.Level;
import java.util.logging.Logger;
import org.glassfish.tyrus.spi.CompletionHandler;
import org.glassfish.tyrus.spi.Writer;
import org.glassfish.grizzly.Buffer;
import org.glassfish.grizzly.Connection;
import org.glassfish.grizzly.EmptyCompletionHandler;
import org.glassfish.grizzly.WriteHandler;
import org.glassfish.grizzly.memory.Buffers;
import static org.glassfish.tyrus.container.grizzly.client.TaskProcessor.Task;
/**
* @author Pavel Bucek (pavel.bucek at oracle.com)
*/
public class GrizzlyWriter extends Writer {
private final TaskProcessor taskProcessor;
final org.glassfish.grizzly.Connection connection;
public GrizzlyWriter(final org.glassfish.grizzly.Connection connection) {
this.connection = connection;
this.connection.configureBlocking(false);
this.taskProcessor = new TaskProcessor(new WriterCondition());
}
@Override
public void write(final ByteBuffer buffer, final CompletionHandler<ByteBuffer> completionHandler) {
if (!connection.isOpen()) {
completionHandler.failed(new IllegalStateException("Connection is not open."));
return;
}
final Buffer message = Buffers.wrap(connection.getTransport().getMemoryManager(), buffer);
final EmptyCompletionHandler emptyCompletionHandler = new EmptyCompletionHandler() {
@Override
public void cancelled() {
if (completionHandler != null) {
completionHandler.cancelled();
}
}
@Override
public void completed(Object result) {
if (completionHandler != null) {
completionHandler.completed(buffer);
}
}
@Override
public void failed(Throwable throwable) {
if (completionHandler != null) {
completionHandler.failed(throwable);
}
}
};
taskProcessor.processTask(new WriteTask(connection, message, emptyCompletionHandler));
}
private class WriterCondition implements TaskProcessor.Condition {
@Override
public boolean isValid() {
if (!connection.canWrite()) {
try {
connection.notifyCanWrite(new WriteHandler() {
@Override
public void onWritePossible() throws Exception {
taskProcessor.processTask();
}
@Override
public void onError(Throwable t) {
Logger.getLogger(GrizzlyWriter.class.getName()).log(Level.WARNING, t.getMessage(), t);
// TODO: do what?
}
});
} catch (IllegalStateException e) {
// ignore - WriteHandler was already registered.
}
return false;
}
return true;
}
}
@Override
public void close() {
taskProcessor.processTask(new CloseTask(connection));
}
@Override
public int hashCode() {
return connection.hashCode();
}
@Override
public boolean equals(Object obj) {
return obj instanceof GrizzlyWriter && connection.equals(((GrizzlyWriter) obj).connection);
}
@Override
public String toString() {
return this.getClass().getName() + " " + connection.toString() + " " + connection.hashCode();
}
private class WriteTask extends Task {
private final Connection connection;
private final Buffer message;
private final EmptyCompletionHandler completionHandler;
private WriteTask(Connection connection, Buffer message, EmptyCompletionHandler completionHandler) {
this.connection = connection;
this.message = message;
this.completionHandler = completionHandler;
}
@Override
public void execute() {
//noinspection unchecked
connection.write(message, completionHandler);
}
}
private class CloseTask extends Task {
private final Connection connection;
private CloseTask(Connection connection) {
this.connection = connection;
}
@Override
public void execute() {
connection.closeSilently();
}
}
}