org.apache.pulsar.common.nar.NarClassLoaderBuilder Maven / Gradle / Ivy
/*
* 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
*
* http://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.
*/
/**
* This class was adapted from NiFi NAR Utils
* https://github.com/apache/nifi/tree/master/nifi-nar-bundles/nifi-framework-bundle/nifi-framework/nifi-nar-utils
*/
package org.apache.pulsar.common.nar;
import java.io.File;
import java.io.IOException;
import java.util.Objects;
import java.util.Set;
/**
* NarClassLoader builder class.
*/
public class NarClassLoaderBuilder {
private File narFile;
private Set additionalJars;
private ClassLoader parentClassLoader;
private String extractionDirectory;
public static NarClassLoaderBuilder builder() {
return new NarClassLoaderBuilder();
}
public NarClassLoaderBuilder narFile(File narFile) {
this.narFile = narFile;
return this;
}
public NarClassLoaderBuilder additionalJars(Set additionalJars) {
this.additionalJars = additionalJars;
return this;
}
public NarClassLoaderBuilder parentClassLoader(ClassLoader parentClassLoader) {
this.parentClassLoader = parentClassLoader;
return this;
}
public NarClassLoaderBuilder extractionDirectory(String extractionDirectory) {
this.extractionDirectory = extractionDirectory;
return this;
}
public NarClassLoader build() throws IOException {
if (parentClassLoader == null) {
parentClassLoader = NarClassLoader.class.getClassLoader();
}
if (extractionDirectory == null) {
extractionDirectory = NarClassLoader.DEFAULT_NAR_EXTRACTION_DIR;
}
Objects.requireNonNull(narFile);
return NarClassLoader.getFromArchive(narFile, additionalJars, parentClassLoader, extractionDirectory);
}
}