avro maven plugin

$mvn avro:help

[INFO] Scanning for projects...
[INFO]
[INFO] --------------------------< com.mspark:kafka >--------------------------
[INFO] Building kafka 0.0.1-SNAPSHOT
[INFO] --------------------------------[ jar ]---------------------------------
[INFO]
[INFO] --- avro-maven-plugin:1.9.1:help (default-cli) @ kafka ---
[INFO] Apache Avro Maven Plugin 1.9.1
  Maven plugin for Avro IDL and Specific API Compilers

This plugin has 5 goals:

avro:help
  Display help information on avro-maven-plugin.
  Call mvn avro:help -Ddetail=true -Dgoal=<goal-name> to display parameter
  details.

avro:idl-protocol
  Generate Java classes and interfaces from AvroIDL files (.avdl)

avro:induce
  Generate Avro files (.avsc and .avpr) from Java classes or interfaces

avro:protocol
  Generate Java classes and interfaces from Avro protocol files (.avpr)

avro:schema
  Generate Java classes from Avro schema files (.avsc)

avro:induce?


avro:idl-protocol? avro:protocol? avro:schema?

참고 : https://gist.github.com/meatcar/081f9c852928934a7029

• .avsc - A JSON representation of an Avro schema (for a single object). This file is parsed by Avro libraries.
• .avpr - A JSON representation of an Avro protocol (a collection of schemas)
• .avdl - A code-like language that gets translated to .avsc or .avpr using the avro-tools.jar. This file is not used by Avro libraries, as far as I can tell...

avsc는 하나의 스키마.

avpr는 프로토콜 및 스키마 collection

avdl는 프로그램 언어와 유사 avsc 또는 avpr로 변환.

참고 : 

https://better-coding.com/conversion-from-apache-avro-idl-files-to-avro-schama-and-avro-protocol-files/

avro rpc 예제 관련 : http://debop.blogspot.com/2013/04/apache-avro-rpc-by-java.html

avsc간 import  관련 : https://www.nerd.vision/post/reusing-schema-definitions-in-avro