tradercentric opened a new pull request, #2519:
URL: https://github.com/apache/avro/pull/2519
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## What is the purpose of the change
I am an end-user/developer to use Confluent Kafka to consume Avro message
seems to be over 32 depth level. The producer/vendor cannot reduce the depth
level of the Avro message. Confluent support has assisted me to open an
issue with Apache Avro project. The issue is logged in
https://issues.apache.org/jira/browse/AVRO-3856. I am in need of code fix so
I can continue.
The current code in Schema.cs parsing Avro schema using JObject.Parse(json),
JArray.Parse(json) do not have option to override max depth level. On
https://github.com/JamesNK/Newtonsoft.Json/pull/2904, Newtonsoft Author advised
to use JObject.Load(Jsonreader), so we can set the MaxDepth in JsonReader once
instantiated. In doing so, I also discovered JsonReader is over-counting the
depths in Avro schema. A 32 level depth Avro schema can be counted as 92 depth
levels in JsonReader.Load (calling the Push method).
Here is my observation of over-counting in Jsonreader:
Avro Schema Depth | JsonReader Depth Count
4 | 11
16 | 44
32 | 92
64 | 188
So to compensate, I had hardcoded JsonReader MaxDepth to 192 to support
parsing of Avro Schema with 64 level depth.
## Verifying this change
This change added tests and can be verified as follows:
I added 3 test cases in SchemaTests.cs:
Parse16DepthLevelSchemaTest
Parse32DepthLevelSchemaTest
Parse64DepthLevelSchemaTest
To verify the fixes.
## Documentation
- Does this pull request introduce a new feature? no
- If yes, how is the feature documented? (not applicable / docs / JavaDocs /
not documented)
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