flushoperationimpl.java

memcached JAVA客户端API,应用广泛,运行比较稳定。

// Copyright (c) 2006  Dustin Sallings <[e-mail]>

package net.spy.memcached.protocol.ascii;

import java.nio.ByteBuffer;

import net.spy.memcached.ops.FlushOperation;
import net.spy.memcached.ops.OperationCallback;
import net.spy.memcached.ops.OperationState;
import net.spy.memcached.ops.OperationStatus;

/**
 * Memcached flush_all operation.
 */
final class FlushOperationImpl extends OperationImpl
	implements FlushOperation {

	private static final byte[] FLUSH="flush_all\r\n".getBytes();

	private static final OperationStatus OK=
		new OperationStatus(true, "OK");

	private final int delay;

	public FlushOperationImpl(int d, OperationCallback cb) {
		super(cb);
		delay=d;
	}

	@Override
	public void handleLine(String line) {
		getLogger().debug("Flush completed successfully");
		getCallback().receivedStatus(matchStatus(line, OK));
		transitionState(OperationState.COMPLETE);
	}

	@Override
	public void initialize() {
		ByteBuffer b=null;
		if(delay == -1) {
			b=ByteBuffer.wrap(FLUSH);
		} else {
			b=ByteBuffer.allocate(32);
			b.put( ("flush_all " + delay + "\r\n").getBytes());
			b.flip();
		}
		setBuffer(b);
	}
}