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71 changes: 71 additions & 0 deletions
71
...pache/shardingsphere/data/pipeline/cdc/client/handler/RetryStreamingExceptionHandler.java
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| @@ -0,0 +1,71 @@ | ||
| /* | ||
| * 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. | ||
| */ | ||
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| package org.apache.shardingsphere.data.pipeline.cdc.client.handler; | ||
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| import io.netty.channel.ChannelHandlerContext; | ||
| import lombok.RequiredArgsConstructor; | ||
| import lombok.SneakyThrows; | ||
| import lombok.extern.slf4j.Slf4j; | ||
| import org.apache.shardingsphere.data.pipeline.cdc.client.CDCClient; | ||
| import org.apache.shardingsphere.data.pipeline.cdc.client.context.ClientConnectionContext; | ||
| import org.apache.shardingsphere.data.pipeline.cdc.client.util.ServerErrorResult; | ||
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| import java.util.concurrent.CompletableFuture; | ||
| import java.util.concurrent.TimeUnit; | ||
| import java.util.concurrent.atomic.AtomicInteger; | ||
|
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| /** | ||
| * Retry streaming exception handler. | ||
| */ | ||
| @RequiredArgsConstructor | ||
| @Slf4j | ||
| public class RetryStreamingExceptionHandler implements ExceptionHandler { | ||
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| private final AtomicInteger retryTimes = new AtomicInteger(0); | ||
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| private CDCClient cdcClient; | ||
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| @Override | ||
| public void setCDCClient(final CDCClient cdcClient) { | ||
| this.cdcClient = cdcClient; | ||
| } | ||
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| @Override | ||
| public void handleServerException(final ChannelHandlerContext ctx, final ServerErrorResult result) { | ||
| // Server exception maybe not be resolved by retrying | ||
| log.error("Server error, code: {}, message: {}", result.getErrorCode(), result.getErrorMessage()); | ||
| } | ||
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| @SneakyThrows(InterruptedException.class) | ||
| @Override | ||
| public void handleSocketException(final ChannelHandlerContext ctx, final Throwable throwable) { | ||
| if (null == cdcClient) { | ||
| log.warn("CDC client is null, could not retry"); | ||
| return; | ||
| } | ||
| ClientConnectionContext connectionContext = ctx.channel().attr(ClientConnectionContext.CONTEXT_KEY).get(); | ||
| if (retryTimes.get() > 5) { | ||
| log.warn("Retry times exceed 5, stop streaming"); | ||
| connectionContext.getStreamingIds().forEach(each -> CompletableFuture.runAsync(() -> cdcClient.stopStreaming(each))); | ||
| return; | ||
| } | ||
| retryTimes.incrementAndGet(); | ||
| TimeUnit.SECONDS.sleep(Math.min(5 >> retryTimes.get(), 10)); | ||
| connectionContext.getStreamingIds().forEach(each -> CompletableFuture.runAsync(() -> cdcClient.restartStreaming(each))); | ||
| } | ||
| } |
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