kafka Consumer .net“协议消息结束组标记与预期标记不匹配。”
我正在尝试从 kafka 读取数据,如您所见:
var config = new ConsumerConfig
{
BootstrapServers = ""*******,
GroupId = Guid.NewGuid().ToString(),
AutoOffsetReset = AutoOffsetReset.Earliest
};
MessageParser<AdminIpoChange> parser = new(() => new AdminIpoChange());
using (var consumer = new ConsumerBuilder<Ignore, byte[]>(config).Build())
{
consumer.Subscribe("AdminIpoChange");
while (true)
{
AdminIpoChange item = new AdminIpoChange();
var cr = consumer.Consume();
item = parser.ParseFrom(new ReadOnlySpan<byte>(cr.Message.Value).ToArray());
}
consumer.Close();
}
我正在使用 google protobuf 来发送和接收数据。此代码在解析器行中返回此错误:
KafkaConsumer.ConsumeAsync: Protocol message end-group tag did not match expected tag.
Google.Protobuf.InvalidProtocolBufferException: Protocol message end-group tag did not match expected tag.
at Google.Protobuf.ParsingPrimitivesMessages.CheckLastTagWas(ParserInternalState& state, UInt32 expectedTag)
at Google.Protobuf.ParsingPrimitivesMessages.ReadGroup(ParseContext& ctx, Int32 fieldNumber, UnknownFieldSet set)
at Google.Protobuf.UnknownFieldSet.MergeFieldFrom(ParseContext& ctx)
at Google.Protobuf.UnknownFieldSet.MergeFieldFrom(UnknownFieldSet unknownFields, ParseContext& ctx)
at AdminIpoChange.pb::Google.Protobuf.IBufferMessage.InternalMergeFrom(ParseContext& input) in D:\MofidProject\domain\obj\Debug\net6.0\Protos\Rlc\AdminIpoChange.cs:line 213
at Google.Protobuf.ParsingPrimitivesMessages.ReadRawMessage(ParseContext& ctx, IMessage message)
at Google.Protobuf.CodedInputStream.ReadRawMessage(IMessage message)
at AdminIpoChange.MergeFrom(CodedInputStream input) in D:\MofidProject\domain\obj\Debug\net6.0\Protos\Rlc\AdminIpoChange.cs:line 188
at Google.Protobuf.MessageExtensions.MergeFrom(IMessage message, Byte[] data, Boolean discardUnknownFields, ExtensionRegistry registry)
at Google.Protobuf.MessageParser`1.ParseFrom(Byte[] data)
at infrastructure.Queue.Kafka.KafkaConsumer.ConsumeCarefully[T](Func`2 consumeFunc, String topic, String group) in D:\MofidProject\infrastructure\Queue\Kafka\KafkaConsumer.cs:line 168
D:\MofidProject\mts.consumer.plus\bin\Debug\net6.0\mts.consumer.plus.exe (process 15516) exited with code -1001.
To automatically close the console when debugging stops, enable Tools->Options->Debugging->Automatically close the console when debugging stops.'
更新:
我来自 Kafka 的示例数据:
- {"SymbolName":"\u0641\u062F\u0631","SymbolIsin":"IRo3pzAZ0002","Date":"1400/12/15","Time":"08:00-12:00","MinPrice":17726,"MaxPrice":21666,"Share":1000,"Show":false,"Operation":0,"Id":"100d8e0b54154e9d902054bff193e875","CreateDateTime":"2022-02-26T09:47:20.0134757+03:30"}
我的 rlc 模型:
syntax = "proto3";
message AdminIpoChange
{
string Id =1;
string SymbolName =2;
string SymbolIsin =3;
string Date =4;
string Time=5;
double MinPrice =6;
double MaxPrice =7;
int32 Share =8;
bool Show =9;
int32 Operation =10;
string CreateDateTime=11;
enum AdminIpoOperation
{
Add = 0;
Edit = 1;
Delete = 2;
}
}
我的数据(以字节为单位):
7B 22 53 79 6D 62 6F 6C 4E 61 6D 65 22 3A 22 5C 75 30 36 34 31 5C 75 30 36 32 46 5C 75 30
36 33 31 22 2C 22 53 79 6D 62 6F 6C 49 73 69 6E 22 3A 22 49 52 6F 33 70 7A 41 5A 30 30 30
32 22 2C 22 44 61 74 65 22 3A 22 31 34 30 30 2F 31 32 2F 31 35 22 2C 22 54 69 6D 65 22 3A
22 30 38 3A 30 30 2D 31 32 3A 30 30 22 2C 22 4D 69 6E 50 72 69 63 65 22 3A 31 37 37 32 36
2C 22 4D 61 78 50 72 69 63 65 22 3A 32 31 36 36 36 2C 22 53 68 61 72 65 22 3A 31 30 30 30
2C 22 53 68 6F 77 22 3A 66 61 6C 73 65 2C 22 4F 70 65 72 61 74 69 6F 6E 22 3A 30 2C 22 49
64 22 3A 22 31 30 30 64 38 65 30 62 35 34 31 35 34 65 39 64 39 30 32 30 35 34 62 66 66 31
39 33 65 38 37 35 22 2C 22 43 72 65 61 74 65 44 61 74 65 54 69 6D 65 22 3A 22 32 30 32 32
2D 30 32 2D 32 36 54 30 39 3A 34 37 3A 32 30 2E 30 31 33 34 37 35 37 2B 30 33 3A 33 30 22
7D
I am trying to read data from kafka as you can see :
var config = new ConsumerConfig
{
BootstrapServers = ""*******,
GroupId = Guid.NewGuid().ToString(),
AutoOffsetReset = AutoOffsetReset.Earliest
};
MessageParser<AdminIpoChange> parser = new(() => new AdminIpoChange());
using (var consumer = new ConsumerBuilder<Ignore, byte[]>(config).Build())
{
consumer.Subscribe("AdminIpoChange");
while (true)
{
AdminIpoChange item = new AdminIpoChange();
var cr = consumer.Consume();
item = parser.ParseFrom(new ReadOnlySpan<byte>(cr.Message.Value).ToArray());
}
consumer.Close();
}
I am using google protobuf
for send and receive data .This code returns this error in parser line:
KafkaConsumer.ConsumeAsync: Protocol message end-group tag did not match expected tag.
Google.Protobuf.InvalidProtocolBufferException: Protocol message end-group tag did not match expected tag.
at Google.Protobuf.ParsingPrimitivesMessages.CheckLastTagWas(ParserInternalState& state, UInt32 expectedTag)
at Google.Protobuf.ParsingPrimitivesMessages.ReadGroup(ParseContext& ctx, Int32 fieldNumber, UnknownFieldSet set)
at Google.Protobuf.UnknownFieldSet.MergeFieldFrom(ParseContext& ctx)
at Google.Protobuf.UnknownFieldSet.MergeFieldFrom(UnknownFieldSet unknownFields, ParseContext& ctx)
at AdminIpoChange.pb::Google.Protobuf.IBufferMessage.InternalMergeFrom(ParseContext& input) in D:\MofidProject\domain\obj\Debug\net6.0\Protos\Rlc\AdminIpoChange.cs:line 213
at Google.Protobuf.ParsingPrimitivesMessages.ReadRawMessage(ParseContext& ctx, IMessage message)
at Google.Protobuf.CodedInputStream.ReadRawMessage(IMessage message)
at AdminIpoChange.MergeFrom(CodedInputStream input) in D:\MofidProject\domain\obj\Debug\net6.0\Protos\Rlc\AdminIpoChange.cs:line 188
at Google.Protobuf.MessageExtensions.MergeFrom(IMessage message, Byte[] data, Boolean discardUnknownFields, ExtensionRegistry registry)
at Google.Protobuf.MessageParser`1.ParseFrom(Byte[] data)
at infrastructure.Queue.Kafka.KafkaConsumer.ConsumeCarefully[T](Func`2 consumeFunc, String topic, String group) in D:\MofidProject\infrastructure\Queue\Kafka\KafkaConsumer.cs:line 168
D:\MofidProject\mts.consumer.plus\bin\Debug\net6.0\mts.consumer.plus.exe (process 15516) exited with code -1001.
To automatically close the console when debugging stops, enable Tools->Options->Debugging->Automatically close the console when debugging stops.'
Updated:
My sample data that comes from Kafka :
- {"SymbolName":"\u0641\u062F\u0631","SymbolIsin":"IRo3pzAZ0002","Date":"1400/12/15","Time":"08:00-12:00","MinPrice":17726,"MaxPrice":21666,"Share":1000,"Show":false,"Operation":0,"Id":"100d8e0b54154e9d902054bff193e875","CreateDateTime":"2022-02-26T09:47:20.0134757+03:30"}
My rlc Model :
syntax = "proto3";
message AdminIpoChange
{
string Id =1;
string SymbolName =2;
string SymbolIsin =3;
string Date =4;
string Time=5;
double MinPrice =6;
double MaxPrice =7;
int32 Share =8;
bool Show =9;
int32 Operation =10;
string CreateDateTime=11;
enum AdminIpoOperation
{
Add = 0;
Edit = 1;
Delete = 2;
}
}
My data in bytes :
7B 22 53 79 6D 62 6F 6C 4E 61 6D 65 22 3A 22 5C 75 30 36 34 31 5C 75 30 36 32 46 5C 75 30
36 33 31 22 2C 22 53 79 6D 62 6F 6C 49 73 69 6E 22 3A 22 49 52 6F 33 70 7A 41 5A 30 30 30
32 22 2C 22 44 61 74 65 22 3A 22 31 34 30 30 2F 31 32 2F 31 35 22 2C 22 54 69 6D 65 22 3A
22 30 38 3A 30 30 2D 31 32 3A 30 30 22 2C 22 4D 69 6E 50 72 69 63 65 22 3A 31 37 37 32 36
2C 22 4D 61 78 50 72 69 63 65 22 3A 32 31 36 36 36 2C 22 53 68 61 72 65 22 3A 31 30 30 30
2C 22 53 68 6F 77 22 3A 66 61 6C 73 65 2C 22 4F 70 65 72 61 74 69 6F 6E 22 3A 30 2C 22 49
64 22 3A 22 31 30 30 64 38 65 30 62 35 34 31 35 34 65 39 64 39 30 32 30 35 34 62 66 66 31
39 33 65 38 37 35 22 2C 22 43 72 65 61 74 65 44 61 74 65 54 69 6D 65 22 3A 22 32 30 32 32
2D 30 32 2D 32 36 54 30 39 3A 34 37 3A 32 30 2E 30 31 33 34 37 35 37 2B 30 33 3A 33 30 22
7D
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数据绝对不是 protobuf 二进制文件;字节 0 开始一个字段号为 15 的组;该组内部是:
在此之后的 varint(在字节 151 处),在字段编号 6 处遇到结束组标记
。这:
所以:毫无疑问:数据是......不是你所期望的。它肯定不是有效的 protobuf 二进制文件。在不知道数据如何存储的情况下,我们所能做的就是猜测,但凭直觉:让我们尝试将其解码为 UTF8,看看它是什么样子:
或者(格式化)
哎呀!您已将数据编写为 JSON,并尝试将其解码为二进制 protobuf。将其解码为 JSON,应该没问题。如果这是使用 protobuf JSON API 编写的:使用 protobuf JSON API 对其进行解码。
The data is definitely not protobuf binary; byte 0 starts a group with field number 15; inside this group is:
after this (at byte 151), an end-group token is encountered with field number 6
There are many striking things about this:
So: there's no doubt about it: that data is ... not what you expect. It certainly isn't valid protobuf binary. Without knowing how that data is stored, all we can do is guess, but on a hunch: let's try decoding it as UTF8 and see what it looks like:
or (formatted)
Oops! You've written the data as JSON, and you're trying to decode it as binary protobuf. Decode it as JSON instead, and you should be fine. If this was written with the protobuf JSON API: decode it with the protobuf JSON API.