/*
* Copyright (c) MuleSoft, Inc. All rights reserved. http://www.mulesoft.com
* The software in this package is published under the terms of the CPAL v1.0
* license, a copy of which has been included with this distribution in the
* LICENSE.txt file.
*/
package org.mule.runtime.module.extension.internal.resources;
import static javax.tools.StandardLocation.SOURCE_OUTPUT;
import static org.apache.commons.lang.StringUtils.EMPTY;
import org.mule.runtime.extension.api.resources.GeneratedResource;
import org.mule.runtime.extension.api.resources.ResourcesGenerator;
import org.mule.runtime.extension.api.resources.spi.GeneratedResourceFactory;
import java.io.IOException;
import java.io.OutputStream;
import java.util.List;
import javax.annotation.processing.ProcessingEnvironment;
import javax.tools.FileObject;
/**
* Implementation of {@link ResourcesGenerator} that writes files using a {@link javax.annotation.processing.Filer} obtained
* through a annotation {@link javax.annotation.processing.Processor} context
*
* @since 3.7.0
*/
public final class AnnotationProcessorResourceGenerator extends AbstractResourcesGenerator {
private final ProcessingEnvironment processingEnv;
/**
* Creates a new instance
*
* @param resourceFactories the {@link GeneratedResourceFactory} instances used to generated resources
* @param processingEnv the current {@link ProcessingEnvironment}
*/
public AnnotationProcessorResourceGenerator(List<GeneratedResourceFactory> resourceFactories,
ProcessingEnvironment processingEnv) {
super(resourceFactories);
this.processingEnv = processingEnv;
}
@Override
protected void write(GeneratedResource resource) {
FileObject file;
try {
file = processingEnv.getFiler().createResource(SOURCE_OUTPUT, EMPTY, resource.getPath());
} catch (IOException e) {
throw wrapException(e, resource);
}
try (OutputStream out = file.openOutputStream()) {
out.write(resource.getContent());
out.flush();
} catch (IOException e) {
throw wrapException(e, resource);
}
}
private RuntimeException wrapException(Exception e, GeneratedResource resource) {
return new RuntimeException(String.format("Could not write generated resource '%s'", resource.getPath()), e);
}
}