My workflow is - I create avsc files, generate C++ classes using avrogencpp tool and create avro binary encoded data in my C++ application.
I am trying to find out why Scenario 2 does not work.
Scenario 1
test.avsc
{
"namespace": "com.company.project",
"name": "Component_DeviceInfo",
"type": "record",
"doc": "Identifies a client device",
"fields": [
{
"name": "deviceId",
"type": [
"null",
"string"
],
"default": null,
"doc": "Multicast Data Client Device Id. Usually unique MAC address"
},
{
"name": "zoneId",
"type": [
"null",
"string"
],
"default": null,
"doc": "Zone id where device belongs to"
}
]
}
Encoder - C++
Component_DeviceInfo deviceInfo;
deviceInfo.deviceId.set_string("device1");
deviceInfo.zoneId.set_string("zone1");
std::vector <char>tele_bytes_;
std::auto_ptr<avro::OutputStream> out = avro::memoryOutputStream(1);
avro::EncoderPtr enc = avro::binaryEncoder();
enc->init(*out);
avro::encode(*enc, deviceInfo);
out->flush();
size_t byte_count = out->byteCount();
DBG("BYTE COUNT " << byte_count);
std::auto_ptr<avro::InputStream> in = avro::memoryInputStream(*out);
avro::StreamReader reader(*in);
std::vector<uint8_t> row_data(byte_count);
reader.readBytes(&row_data[0], byte_count);
Java Decoder
@Override
public Object deserializeByteArr(Schema schema, final byte[] data){
DatumReader<GenericRecord> genericDatumReader = new SpecificDatumReader<>(schema);
Decoder decoder = DecoderFactory.get().binaryDecoder(data, null);
try {
GenericRecord userData = genericDatumReader.read(null, decoder);
System.out.println(userData);
} catch (IOException e) {
e.printStackTrace();
}
return null;
}
Scenario 2 - Does not work
Note that I have updated the schema and regenerated c++ files corresponding to the schema
test.avsc
[
{
"namespace": "com.company.project",
"name": "Component_DeviceInfo",
"type": "record",
"doc": "Identifies a client device",
"fields": [
{
"name": "deviceId",
"type": [
"null",
"string"
],
"default": null,
"doc": "Unique MAC address"
},
{
"name": "zoneId",
"type": [
"null",
"string"
],
"default": null,
"doc": "Zone id where Client device belongs to"
}
]
},
{
"namespace": "com.company.project",
"name": "Component_EventList",
"type": "record",
"doc": "Component Event list",
"fields": [
{
"name": "deviceInfo",
"type": [
"null",
"com.company.project.Component_DeviceInfo"
],
"default": null,
"doc": "Device information such as device id and zone id"
}
]
}
]
Encoder C++
Component_DeviceInfo deviceInfo;
deviceInfo.deviceId.set_string("device1");
deviceInfo.zoneId.set_string("zone1");
std::vector <char>tele_bytes_;
Component_EventList ComponentEventList;
ComponentEventList.deviceInfo.set_Component_DeviceInfo(deviceInfo);
std::auto_ptr<avro::OutputStream> out = avro::memoryOutputStream(1);
avro::EncoderPtr enc = avro::binaryEncoder();
enc->init(*out);
avro::encode(*enc, ComponentEventList);
out->flush();
size_t byte_count = out->byteCount();
DBG("BYTE COUNT " << byte_count);
std::auto_ptr<avro::InputStream> in = avro::memoryInputStream(*out);
avro::StreamReader reader(*in);
std::vector<uint8_t> row_data(byte_count);
reader.readBytes(&row_data[0], byte_count);
Output
org.springframework.kafka.listener.ListenerExecutionFailedException: Listener method 'public void com.company.telemetry.services.consumer.TelemetryConsumerService.consume(org.apache.kafka.clients.consumer.ConsumerRecord<java.lang.String, byte[]>)' threw exception; nested exception is java.lang.ArrayIndexOutOfBoundsException: 7
at org.springframework.kafka.listener.adapter.MessagingMessageListenerAdapter.invokeHandler(MessagingMessageListenerAdapter.java:188) ~[spring-kafka-1.1.6.RELEASE.jar:na]
at org.springframework.kafka.listener.adapter.RecordMessagingMessageListenerAdapter.onMessage(RecordMessagingMessageListenerAdapter.java:72) ~[spring-kafka-1.1.6.RELEASE.jar:na]
at org.springframework.kafka.listener.adapter.RecordMessagingMessageListenerAdapter.onMessage(RecordMessagingMessageListenerAdapter.java:47) ~[spring-kafka-1.1.6.RELEASE.jar:na]
at org.springframework.kafka.listener.KafkaMessageListenerContainer$ListenerConsumer.invokeRecordListener(KafkaMessageListenerContainer.java:794) [spring-kafka-1.1.6.RELEASE.jar:na]
at org.springframework.kafka.listener.KafkaMessageListenerContainer$ListenerConsumer.invokeListener(KafkaMessageListenerContainer.java:738) [spring-kafka-1.1.6.RELEASE.jar:na]
at org.springframework.kafka.listener.KafkaMessageListenerContainer$ListenerConsumer.run(KafkaMessageListenerContainer.java:570) [spring-kafka-1.1.6.RELEASE.jar:na]
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [na:1.8.0_91]
at java.util.concurrent.FutureTask.run(FutureTask.java:266) [na:1.8.0_91]
at java.lang.Thread.run(Thread.java:745) [na:1.8.0_91]
Caused by: java.lang.ArrayIndexOutOfBoundsException: 7
at org.apache.avro.io.parsing.Symbol$Alternative.getSymbol(Symbol.java:402) ~[avro-1.7.7.jar:1.7.7]
at org.apache.avro.io.ResolvingDecoder.doAction(ResolvingDecoder.java:290) ~[avro-1.7.7.jar:1.7.7]
at org.apache.avro.io.parsing.Parser.advance(Parser.java:88) ~[avro-1.7.7.jar:1.7.7]
at org.apache.avro.io.ResolvingDecoder.readIndex(ResolvingDecoder.java:267) ~[avro-1.7.7.jar:1.7.7]
at org.apache.avro.generic.GenericDatumReader.read(GenericDatumReader.java:155) ~[avro-1.7.7.jar:1.7.7]
at org.apache.avro.generic.GenericDatumReader.readField(GenericDatumReader.java:193) ~[avro-1.7.7.jar:1.7.7]
at org.apache.avro.generic.GenericDatumReader.readRecord(GenericDatumReader.java:183) ~[avro-1.7.7.jar:1.7.7]
at org.apache.avro.generic.GenericDatumReader.read(GenericDatumReader.java:151) ~[avro-1.7.7.jar:1.7.7]
at org.apache.avro.generic.GenericDatumReader.read(GenericDatumReader.java:155) ~[avro-1.7.7.jar:1.7.7]
at org.apache.avro.generic.GenericDatumReader.readField(GenericDatumReader.java:193) ~[avro-1.7.7.jar:1.7.7]
at org.apache.avro.generic.GenericDatumReader.readRecord(GenericDatumReader.java:183) ~[avro-1.7.7.jar:1.7.7]
at org.apache.avro.generic.GenericDatumReader.read(GenericDatumReader.java:151) ~[avro-1.7.7.jar:1.7.7]
at org.apache.avro.generic.GenericDatumReader.read(GenericDatumReader.java:155) ~[avro-1.7.7.jar:1.7.7]
at org.apache.avro.generic.GenericDatumReader.read(GenericDatumReader.java:142) ~[avro-1.7.7.jar:1.7.7]
at com.company.telemetry.services.serde.AvroByteArrDeserializer.deserializeByteArr(AvroByteArrDeserializer.java:32) ~[classes/:na]
at com.company.telemetry.services.TelemetryService.handleByteArr(TelemetryService.java:59) ~[classes/:na]
at com.company.telemetry.services.consumer.TelemetryConsumerService.consume(TelemetryConsumerService.java:39) ~[classes/:na]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_91]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_91]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_91]
at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_91]
at org.springframework.messaging.handler.invocation.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:180) ~[spring-messaging-4.3.11.RELEASE.jar:4.3.11.RELEASE]
at org.springframework.messaging.handler.invocation.InvocableHandlerMethod.invoke(InvocableHandlerMethod.java:112) ~[spring-messaging-4.3.11.RELEASE.jar:4.3.11.RELEASE]
at org.springframework.kafka.listener.adapter.HandlerAdapter.invoke(HandlerAdapter.java:48) ~[spring-kafka-1.1.6.RELEASE.jar:na]
at org.springframework.kafka.listener.adapter.MessagingMessageListenerAdapter.invokeHandler(MessagingMessageListenerAdapter.java:174) ~[spring-kafka-1.1.6.RELEASE.jar:na]
... 8 common frames omitted
I would appreciate if someone could tell me whats going on ! Thanks !
The issue was I was creating Avro encoded data using wrong classes. But the bigger issue turned out to be top level unions - https://issues.apache.org/jira/browse/AVRO-2095