/*
* 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,
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* See the License for the specific language governing permissions and
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*/
package org.apache.beam.sdk.io.kinesis;
import static com.google.common.collect.Lists.newArrayList;
import java.util.List;
/**
* Filters out records, which were already processed and checkpointed.
*
* <p>We need this step, because we can get iterators from Kinesis only with "sequenceNumber"
* accuracy, not with "subSequenceNumber" accuracy.
*/
class RecordFilter {
public List<KinesisRecord> apply(List<KinesisRecord> records, ShardCheckpoint checkpoint) {
List<KinesisRecord> filteredRecords = newArrayList();
for (KinesisRecord record : records) {
if (checkpoint.isBeforeOrAt(record)) {
filteredRecords.add(record);
}
}
return filteredRecords;
}
}