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手动释放对象

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Guoqs
2024-12-28 13:44:57 +08:00
parent 458c216a6d
commit c9bfa8ace8
4 changed files with 173 additions and 152 deletions
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112
jsowell-netty/src/main/java/com/jsowell/netty/decoder/YouDianProtocolDecoder.java
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@@ -4,6 +4,7 @@ import com.jsowell.common.constant.Constants;
import io.netty.buffer.ByteBuf;
import io.netty.channel.ChannelHandlerContext;
import io.netty.handler.codec.ByteToMessageDecoder;
import io.netty.util.ReferenceCountUtil;
import lombok.extern.slf4j.Slf4j;
import java.nio.charset.StandardCharsets;
@@ -37,7 +38,7 @@ public class YouDianProtocolDecoder extends ByteToMessageDecoder {
buffer.markReaderIndex();
// 判断是否为DNY包头或68包头
if (isStartOfDnyHeader(buffer, beginReader) || isStartOf68Header(buffer, beginReader)) {
if (isStartOfDnyHeader(buffer, beginReader)) {
break; // 读到了协议的开始标志，结束while循环
}
@@ -60,13 +61,13 @@ public class YouDianProtocolDecoder extends ByteToMessageDecoder {
}
// 检查包头是否是 68 协议
if (buffer.readableBytes() >= HEADER_LENGTH_68) {
if (buffer.getUnsignedByte(beginReader) == 0x68) {
// 处理 68 协议
decode68Message(buffer, out, beginReader);
return;
}
}
// if (buffer.readableBytes() >= HEADER_LENGTH_68) {
// if (buffer.getUnsignedByte(beginReader) == 0x68) {
// // 处理 68 协议
// decode68Message(buffer, out, beginReader);
// return;
// }
// }
// 未知协议，还原读指针
buffer.resetReaderIndex();
@@ -84,58 +85,61 @@ public class YouDianProtocolDecoder extends ByteToMessageDecoder {
}
// 判断是否为68包头
private boolean isStartOf68Header(ByteBuf buffer, int beginReader) {
if (buffer.readableBytes() >= HEADER_LENGTH_68) {
return buffer.getUnsignedByte(beginReader) == 0x68;
}
return false;
}
// private boolean isStartOf68Header(ByteBuf buffer, int beginReader) {
// if (buffer.readableBytes() >= HEADER_LENGTH_68) {
// return buffer.getUnsignedByte(beginReader) == 0x68;
// }
// return false;
// }
// 处理68协议消息
private void decode68Message(ByteBuf buffer, List<Object> out, int beginReader) {
// 检查剩余数据是否足够
if (buffer.readableBytes() < HEADER_LENGTH_68 + 1 + 2) {
buffer.readerIndex(beginReader);
return;
}
// 获取消息长度
int length = buffer.getUnsignedByte(beginReader + HEADER_LENGTH_68);
// 检查剩余数据是否足够
if (buffer.readableBytes() < HEADER_LENGTH_68 + 1 + length + 2) {
buffer.readerIndex(beginReader);
return;
}
// 读取 data 数据 最后+2是帧校验域长度
ByteBuf frame = buffer.retainedSlice(beginReader, HEADER_LENGTH_68 + 1 + length + 2);
buffer.readerIndex(beginReader + HEADER_LENGTH_68 + 1 + length + 2);
out.add(frame);
}
// private void decode68Message(ByteBuf buffer, List<Object> out, int beginReader) {
// // 检查剩余数据是否足够
// if (buffer.readableBytes() < HEADER_LENGTH_68 + 1 + 2) {
// buffer.readerIndex(beginReader);
// return;
// }
//
// // 获取消息长度
// int length = buffer.getUnsignedByte(beginReader + HEADER_LENGTH_68);
// // 检查剩余数据是否足够
// if (buffer.readableBytes() < HEADER_LENGTH_68 + 1 + length + 2) {
// buffer.readerIndex(beginReader);
// return;
// }
//
// // 读取 data 数据 最后+2是帧校验域长度
// ByteBuf frame = buffer.retainedSlice(beginReader, HEADER_LENGTH_68 + 1 + length + 2);
// buffer.readerIndex(beginReader + HEADER_LENGTH_68 + 1 + length + 2);
// out.add(frame);
// }
// 处理DNY协议消息
private void decodeDnyMessage(ByteBuf buffer, List<Object> out, int beginReader) {
// 检查剩余数据是否足够
if (buffer.readableBytes() < HEADER_LENGTH_DNY + 1) {
buffer.readerIndex(beginReader);
return;
ByteBuf frame = null;
try {
// 检查剩余数据是否足够
if (buffer.readableBytes() < HEADER_LENGTH_DNY + 1) {
buffer.readerIndex(beginReader);
return;
}
// 获取消息长度
int length = buffer.getUnsignedByte(beginReader + HEADER_LENGTH_DNY);
// log.info("获取消息长度, length:{}", length);
// 检查剩余数据是否足够
if (buffer.readableBytes() < HEADER_LENGTH_DNY + 1 + length) {
buffer.readerIndex(beginReader);
return;
}
// 读取 data 数据
frame = buffer.retainedSlice(beginReader, HEADER_LENGTH_DNY + length + 2);
buffer.readerIndex(beginReader + HEADER_LENGTH_DNY + length + 2);
out.add(frame);
} finally {
if (frame != null) {
ReferenceCountUtil.release(frame);
}
}
// 获取消息长度
int length = buffer.getUnsignedByte(beginReader + HEADER_LENGTH_DNY);
// log.info("获取消息长度, length:{}", length);
// 检查剩余数据是否足够
if (buffer.readableBytes() < HEADER_LENGTH_DNY + 1 + length) {
buffer.readerIndex(beginReader);
return;
}
// 读取 data 数据
ByteBuf frame = buffer.retainedSlice(beginReader, HEADER_LENGTH_DNY + length + 2);
buffer.readerIndex(beginReader + HEADER_LENGTH_DNY + length + 2);
out.add(frame);
}
}