PHOENIX-2715 Query Log (Ankit Singhal)
[phoenix.git] / phoenix-core / src / main / java / org / apache / phoenix / log / QueryLoggerDefaultExceptionHandler.java
1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one
3 * or more contributor license agreements. See the NOTICE file
4 * distributed with this work for additional information
5 * regarding copyright ownership. The ASF licenses this file
6 * to you under the Apache License, Version 2.0 (the
7 * "License"); you may not use this file except in compliance
8 * with the License. You may obtain a copy of the License at
9 *
10 * http://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing, software
13 * distributed under the License is distributed on an "AS IS" BASIS,
14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 * See the License for the specific language governing permissions and
16 * limitations under the License.
17 */
18 package org.apache.phoenix.log;
19
20 import com.lmax.disruptor.ExceptionHandler;
21
22 class QueryLoggerDefaultExceptionHandler implements ExceptionHandler<RingBufferEvent> {
23
24 @Override
25 public void handleEventException(Throwable ex, long sequence, RingBufferEvent event) {
26 final StringBuilder sb = new StringBuilder(512);
27 sb.append("Query Logger error handling event seq=").append(sequence).append(", value='");
28 try {
29 sb.append(event);
30 } catch (final Exception ignored) {
31 sb.append("[ERROR calling ").append(event.getClass()).append(".toString(): ");
32 sb.append(ignored).append("]");
33 }
34 sb.append("':");
35 System.err.println(sb);
36 ex.printStackTrace();
37 }
38
39 @Override
40 public void handleOnStartException(final Throwable throwable) {
41 System.err.println("QueryLogger error starting:");
42 throwable.printStackTrace();
43 }
44
45 @Override
46 public void handleOnShutdownException(final Throwable throwable) {
47 System.err.println("QueryLogger error shutting down:");
48 throwable.printStackTrace();
49 }
50
51 }