org.apache.druid.segment.realtime.plumber.ServerTimeRejectionPolicyFactory.java Source code

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Here is the source code for org.apache.druid.segment.realtime.plumber.ServerTimeRejectionPolicyFactory.java

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/*
 * 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.druid.segment.realtime.plumber;

import org.apache.druid.java.util.common.DateTimes;
import org.apache.druid.java.util.common.StringUtils;
import org.joda.time.DateTime;
import org.joda.time.Period;

public class ServerTimeRejectionPolicyFactory implements RejectionPolicyFactory {
    @Override
    public RejectionPolicy create(final Period windowPeriod) {
        final long windowMillis = windowPeriod.toStandardDuration().getMillis();

        return new RejectionPolicy() {
            @Override
            public DateTime getCurrMaxTime() {
                return DateTimes.nowUtc();
            }

            @Override
            public boolean accept(long timestamp) {
                long now = System.currentTimeMillis();

                boolean notTooOld = timestamp >= (now - windowMillis);
                boolean notTooYoung = timestamp <= (now + windowMillis);

                return notTooOld && notTooYoung;
            }

            @Override
            public String toString() {
                return StringUtils.format("serverTime-%s", windowPeriod);
            }
        };
    }
}