/*
* Copyright (c) 2008-2017, Hazelcast, Inc. All Rights Reserved.
*
* 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 com.hazelcast.util;
import java.util.concurrent.TimeUnit;
class JumpingSystemClock extends Clock.ClockImpl {
static final String JUMP_AFTER_SECONDS_PROPERTY = "com.hazelcast.clock.jump.after";
private final long jumpAfter;
private final long jumpOffset;
public JumpingSystemClock() {
String clockOffset = System.getProperty(ClockProperties.HAZELCAST_CLOCK_OFFSET);
String jumpAfterSeconds = System.getProperty(JUMP_AFTER_SECONDS_PROPERTY);
try {
jumpOffset = Long.parseLong(clockOffset);
jumpAfter = System.currentTimeMillis() + TimeUnit.SECONDS.toMillis(Integer.parseInt(jumpAfterSeconds));
} catch (Exception e) {
throw ExceptionUtil.rethrow(e);
}
}
@Override
protected long currentTimeMillis() {
long now = System.currentTimeMillis();
if (now >= jumpAfter) {
now += jumpOffset;
}
return now;
}
}