/*
 *  Copyright 2009-2010 Brian S O'Neill
 *
 *  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 org.cojen.dirmi;

/**
 * 
 *
 * @author Brian S O'Neill
 */
public class RemoteOrderedServer implements RemoteOrdered {
    private int mSequence;
    private boolean mFailed;

    public void nop() {
    }

    public void doIt(int sequence) {
        if (mSequence + 1 != sequence) {
            mFailed = true;
        }
        mSequence = sequence;
    }

    public void doItAsync(int sequence) {
        doIt(sequence);
    }

    public Completion<Integer> doItCompletion(int sequence) {
        doIt(sequence);
        return Response.complete(sequence);
    }

    public Pipe doItPipe(Pipe pipe) {
        try {
            int sequence = pipe.readInt();
            doIt(sequence);
        } catch (Exception e) {
            mFailed = true;
        }
        return null;
    }

    public void resetSequence(int sequence) {
        mSequence = sequence;
        mFailed = false;
    }

    public boolean checkSequence() {
        return !mFailed;
    }
}