com.github.thake.avro4k.maven.SchemaMojo Maven / Gradle / Ivy

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Maven plugin for Avro to Avro4k code generation
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/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.github.thake.avro4k.maven;

import com.github.thake.avro4k.compiler.Avro4kCompiler;
import org.apache.avro.Schema;
import org.apache.maven.plugin.MojoExecutionException;
import org.apache.maven.plugins.annotations.LifecyclePhase;
import org.apache.maven.plugins.annotations.Mojo;
import org.apache.maven.plugins.annotations.Parameter;
import org.apache.maven.plugins.annotations.ResolutionScope;

import java.io.File;
import java.io.IOException;

/**
 * Generate Kotlin classes from Avro schema files (.avsc)
 */
@Mojo(name = "schema", threadSafe = true, defaultPhase = LifecyclePhase.GENERATE_SOURCES, requiresDependencyResolution = ResolutionScope.TEST) public class SchemaMojo
        extends AbstractAvroMojo {
  /**
   * A parser used to parse all schema files. Using a common parser will
   * facilitate the import of external schemas.
   */
  private Schema.Parser schemaParser = new Schema.Parser();

  /**
   * A set of Ant-like inclusion patterns used to select files from the source
   * directory for processing. By default, the pattern **/*.avsc
   * is used to select grammar files.
   */
  @Parameter private String[] includes = new String[] { "**/*.avsc" };

  /**
   * A set of Ant-like inclusion patterns used to select files from the source
   * directory for processing. By default, the pattern **/*.avsc
   * is used to select grammar files.
   */
  @Parameter private String[] testIncludes = new String[] { "**/*.avsc" };

  @Override protected void doCompile(String filename, File sourceDirectory, File outputDirectory)
          throws IOException, MojoExecutionException {
    File src = new File(sourceDirectory, filename);
    Schema schema;

    // This is necessary to maintain backward-compatibility. If there are
    // no imported files then isolate the schemas from each other, otherwise
    // allow them to share a single schema so reuse and sharing of schema
    // is possible.
    if (imports == null) {
      schema = new Schema.Parser().parse(src);
    } else {
      schema = schemaParser.parse(src);
    }

    Avro4kCompiler compiler = new Avro4kCompiler(schema);
    configure(compiler);
    compiler.compileToDestination(src, outputDirectory);
  }

  @Override protected String[] getIncludes() {
    return includes;
  }

  @Override protected String[] getTestIncludes() {
    return testIncludes;
  }
}