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1   /*
2    * Copyright 2021 TiKV Project Authors.
3    *
4    * Licensed under the Apache License, Version 2.0 (the "License");
5    * you may not use this file except in compliance with the License.
6    * You may obtain a copy of the License at
7    *
8    * http://www.apache.org/licenses/LICENSE-2.0
9    *
10   * Unless required by applicable law or agreed to in writing, software
11   * distributed under the License is distributed on an "AS IS" BASIS,
12   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13   * See the License for the specific language governing permissions and
14   * limitations under the License.
15   *
16   */
17  
18  package org.tikv.common.exception;
19  
20  import com.google.protobuf.ByteString;
21  import java.util.Optional;
22  import org.tikv.common.codec.KeyUtils;
23  
24  public class RawCASConflictException extends RuntimeException {
25  
26    private final ByteString key;
27    private final Optional<ByteString> expectedPrevValue;
28    private final Optional<ByteString> prevValue;
29  
30    public RawCASConflictException(
31        ByteString key, Optional<ByteString> expectedPrevValue, Optional<ByteString> prevValue) {
32      super(
33          String.format(
34              "key=%s expectedPrevValue=%s prevValue=%s",
35              KeyUtils.formatBytes(key), expectedPrevValue, prevValue));
36      this.key = key;
37      this.expectedPrevValue = expectedPrevValue;
38      this.prevValue = prevValue;
39    }
40  
41    public ByteString getKey() {
42      return this.key;
43    }
44  
45    public Optional<ByteString> getExpectedPrevValue() {
46      return this.expectedPrevValue;
47    }
48  
49    public Optional<ByteString> getPrevValue() {
50      return this.prevValue;
51    }
52  }