return result;
> } catch (IOException ex) {
> throw new SerializationException(
> "Can't serialize data='" + data, ex);
> }
> }
>
> čt 1. 8. 2019 v 17:06 odesílatel Svante Karlsson
> napsal:
>
>>
deserializer to enable schema evolution.
>
> thanks in advance,
> Martin
>
> čt 1. 8. 2019 v 15:55 odesílatel Svante Karlsson
> napsal:
>
>> In an avrofile the schema is in the beginning but if you refer a single
>> record serialization like Kafka then you
In an avrofile the schema is in the beginning but if you refer a single
record serialization like Kafka then you have to add something that you can
use to get hold of the schema. Confluents avroencoder for Kafka uses
confluents schema registry that uses int32 as schema Id. This is prepended
(+a
This is maybe not the nicest implementation since it feels way to
complicated but the only on I found out. Checkout encode starting at line
95.
Note that the example encodes data using confluent's schema registry format
(ie 5 extra bytes) and does a double copy - I have not found a way to get
rid
You need to call flush(). Send common usecaee below
auto bin_os = avro::memoryOutputStream();
avro::EncoderPtr bin_encoder = avro::binaryEncoder();
bin_encoder->init(*bin_os.get());
avro::encode(*bin_encoder, src);
bin_encoder->flush(); /* push back unused characters to
The problem is that avro has it's own representation of union encoding so
your experience would encode to {"int": 50}.
In a recent project we ended up writing a slightly modded json parser to be
able to use avro schemas on existing json rest calls.
2016-02-29 9:20 GMT+01:00 Chris Miller
I had the same problem a while ago and for the same reasons as you mention
we decided to use fingerprints (MD5 hash of the schema), however there are
some catches here.
First I believe that the normalisation of the schema is incomplete so you
might end up with different hashes of the same schema.
What causes the schema normalization to be incomplete?
Bad implementation, I use C++ avro and it's not complete and not very
active.
And is that a problem? As long as the reader can get the schema, it
shouldn't matter that there are duplicates – as long as the differences
between the duplicates
I think you are hit by https://issues.apache.org/jira/browse/AVRO-1335
I recently extended the avrogen_cpp thing so it also generates the
following members to your class.
...
static inline const boost::uuids::uuid schema_hash() { static const
boost::uuids::uuid
The schema is written inside an avro file. Thats why you don't need to
provide it. You really need the schema to decode avro data. Either by
providing a schema from somewhere and using a generic datum reader or by
generating a hardcoded decoder that knows the schema from compile time.
regards
I had some issues with the cmakefile when I built avro c++ for windows a
month or two ago. If I remebered correctly it did not find or possibly
figure out the configuration of boost. I ended up doing some small hacks in
the CMakeList.txt file to get it to compile. This was on windows so the
Since your using solaris check the ticket below: (it speaks about a bug in
1.53 that has been fixed in 1.54)
https://svn.boost.org/trac/boost/ticket/8212
/svante
2014-08-01 15:28 GMT+02:00 jeff saremi jeffsar...@hotmail.com:
Svente, thanks very much for the info.
I looked at the shell file
I'm having issues with endian converison of 128 bit integers (uuid's in my
case) but the problem is generic
I currently encodes them as fixed but that leaves the swapping of bytes
(for endianness) up to the user. I had not given the matter any thought
until we streched some existing 64 bit id's
I've started to work on a c++ library that I intend to use for performing
avro encoded rest calls. If/when I understand how to implement avro rpc it
should be simple enough to extend the existing code base to that as well.
The client is implemented using libcurl and boost asio.
The server is
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