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Merge pull request #487 from jasonhx140/master

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dump connection is disconnected
This commit is contained in:
agapple
2018-01-10 13:41:30 +08:00
committed by GitHub
parent af289cd9fb a965d2cd04
commit 2d31e6bf91
2 changed files with 21 additions and 8 deletions
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16
driver/src/main/java/com/alibaba/otter/canal/parse/driver/mysql/socket/SocketChannel.java
View File

@@ -27,10 +27,22 @@ public class SocketChannel {
this.channel = channel; this.channel = channel;
} }
public void writeCache(ByteBuf buf) { public void writeCache(ByteBuf buf) throws InterruptedException {
synchronized (lock) { synchronized (lock) {
while (true) {
cache.discardReadBytes();// 回收内存 cache.discardReadBytes();// 回收内存
cache.writeBytes(buf); //source buffer is empty.
if (!buf.isReadable()) {
break;
}
if (cache.isWritable()) {
cache.writeBytes(buf, Math.min(cache.writableBytes(), buf.readableBytes()));
} else {
//dest buffer is full.
lock.wait(100);
}
}
} }
} }

11
driver/src/main/java/com/alibaba/otter/canal/parse/driver/mysql/socket/SocketChannelPool.java
View File

@@ -7,7 +7,7 @@ import io.netty.channel.AdaptiveRecvByteBufAllocator;
import io.netty.channel.Channel; import io.netty.channel.Channel;
import io.netty.channel.ChannelFuture; import io.netty.channel.ChannelFuture;
import io.netty.channel.ChannelHandlerContext; import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.ChannelInboundHandlerAdapter; import io.netty.channel.SimpleChannelInboundHandler;
import io.netty.channel.ChannelInitializer; import io.netty.channel.ChannelInitializer;
import io.netty.channel.ChannelOption; import io.netty.channel.ChannelOption;
import io.netty.channel.EventLoopGroup; import io.netty.channel.EventLoopGroup;
@@ -71,7 +71,7 @@ public abstract class SocketChannelPool {
return socket; return socket;
} }
public static class BusinessHandler extends ChannelInboundHandlerAdapter { public static class BusinessHandler extends SimpleChannelInboundHandler<ByteBuf> {
private SocketChannel socket = null; private SocketChannel socket = null;
private final CountDownLatch latch = new CountDownLatch(1); private final CountDownLatch latch = new CountDownLatch(1);
@@ -92,18 +92,19 @@ public abstract class SocketChannelPool {
} }
@Override @Override
public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception { protected void channelRead0(ChannelHandlerContext ctx, ByteBuf msg) throws Exception {
if (socket != null) { if (socket != null) {
socket.writeCache((ByteBuf) msg); socket.writeCache(msg);
} else { } else {
// TODO: need graceful error handler. // TODO: need graceful error handler.
logger.error("no socket available."); logger.error("no socket available.");
} }
ReferenceCountUtil.release(msg);// 添加防止内存泄漏的
} }
@Override @Override
public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) throws Exception { public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) throws Exception {
//need output error for troubeshooting.
logger.error("business error.", cause);
ctx.close(); ctx.close();
} }
} }