Get a machine to make your machine write code.
avro-sbt is a simple-build-tool plugin for generating Avro classes from schema and protocol definitions.
- Simple Build Tool
- A burning need to generate classes using Avro.
First, specify avro-sbt as a dependency in project/plugins/Plugins.scala:
class Plugins(info: sbt.ProjectInfo) extends sbt.PluginDefinition(info) {
val codaRepo = "Coda Hale's Repository" at "http://repo.codahale.com/"
val avroSBT = "com.codahale" % "avro-sbt" % "0.1.0"
}
Second, put your Avro protocol files (*.avpr) and schema files (*.avsc)
into src/main/avro. If you want to put them somewhere else, be sure to let
avro-sbt know:
override def avroProtocols = "src" / "main" / "my-special-avro" ** "*.avro-protocol"
override def avroSchemas = "src" / "main" / "my-special-avro" ** "*.avro-schema"
Third, and only if you're feeling picky, let it know where you want your new classes put:
override def avroOutputPath = "src" / "main" / "generated"
(It defaults to src/main/java, which will probably work just fine for you.)
Finally, compile your project. avro-sbt will generate fresh source files for your schemas and protocols before it compiles things. It should just work.
Oh, and if you want Avro to clean the generated Java sources when it cleans your
compiled .class files, do this:
override def cleanAction = super.cleanAction dependsOn(cleanAvro)
But please only do this if avroOutputPath doesn't have anything you would
miss. Because clean-avro will nuke it.
Copyright (c) 2010 Coda Hale Published under The MIT License, see LICENSE