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Omid Transaction Status Oracle server and Timestamp Oracle

There is a newer version: 1.1.2

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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.apache.omid.tso;

import java.io.IOException;

public interface TimestampOracle {

    void initialize() throws IOException;

    /**
     * Returns the next timestamp if available. Otherwise spins till the
     * ts-persist thread performs the new timestamp allocation
     */
    long next() throws IOException;

    long getLast();

}