[GitHub] avro pull request #170: Add schema compatibility checker for Ruby

[tjwp <gi...@git.apache.org>]

GitHub user tjwp opened a pull request:

    https://github.com/apache/avro/pull/170

    Add schema compatibility checker for Ruby

    This change introduces a module `Avro::SchemaCompatibility` to perform a full compatibility check between two schemas in Ruby. This compatibility check extends the existing schema matching implemented in `Avro::IO::DatumReader.match_schemas`. The implementation of the `.match_schemas` class method has been moved to the new module and is called as part of the full compatibility check.
    
    `#read?`, `#be_read?` and `#mutual_read?` methods have been added to `Avro::Schema` as a way to invoke the new compatibility checks. A `#default?` method has been added to `Field` to determine if a field has a default.
    
    Tests for the new module were based on the test cases from:
    - lang/java/avro/src/test/java/org/apache/avro/io/parsing/TestResolvingGrammarGenerator2.java
    - lang/java/avro/src/test/java/org/apache/avro/TestSchemaCompatibility.java
    
    Additional fixes included:
    - support for empty records and empty unions in Ruby (these were useful to demonstrate test parity for compatibility checking)
    - schema promotion between bytes and strings in `.match_schemas`
    - schema promotion within complex types in `.match_schemas`, e.g. an array of ints promoted to an array of longs


You can merge this pull request into a Git repository by running:

    $ git pull https://github.com/salsify/avro compatibility_validator

Alternatively you can review and apply these changes as the patch at:

    https://github.com/apache/avro/pull/170.patch

To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:

    This closes #170
    
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commit c404846078507405220f4862e72ccca034bfcfd4
Author: Tim Perkins <tp...@salsify.com>
Date:   2016-12-15T14:35:21Z

    Add schema compatibility checker for Ruby

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[GitHub] avro pull request #170: AVRO-1969: Add schema compatibility checker for Ruby

[asfgit <gi...@git.apache.org>]

Github user asfgit closed the pull request at:

    https://github.com/apache/avro/pull/170


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