46 lines
1.8 KiB
Java
46 lines
1.8 KiB
Java
/*
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* Copyright 2019 Amazon.com, Inc. or its affiliates.
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* Licensed under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package software.amazon.kinesis.checkpoint;
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import lombok.Data;
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import lombok.experimental.Accessors;
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import software.amazon.kinesis.retrieval.kpl.ExtendedSequenceNumber;
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/**
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* A class encapsulating the 2 pieces of state stored in a checkpoint.
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*/
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@Data
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@Accessors(fluent = true)
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public class Checkpoint {
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private final ExtendedSequenceNumber checkpoint;
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private final ExtendedSequenceNumber pendingCheckpoint;
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private final byte[] pendingCheckpointState;
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/**
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* Constructor.
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*
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* @param checkpoint the checkpoint sequence number - cannot be null or empty.
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* @param pendingCheckpoint the pending checkpoint sequence number - can be null.
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* @param pendingCheckpointState the pending checkpoint state - can be null.
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*/
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public Checkpoint(final ExtendedSequenceNumber checkpoint, final ExtendedSequenceNumber pendingCheckpoint, byte[] pendingCheckpointState) {
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if (checkpoint == null || checkpoint.sequenceNumber().isEmpty()) {
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throw new IllegalArgumentException("Checkpoint cannot be null or empty");
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}
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this.checkpoint = checkpoint;
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this.pendingCheckpoint = pendingCheckpoint;
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this.pendingCheckpointState = pendingCheckpointState;
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}
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}
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