org.elasticsearch.common.inject.Modules Maven / Gradle / Ivy
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* this work for additional information regarding copyright
* ownership. Elasticsearch 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.
*/
package org.elasticsearch.common.inject;
import org.elasticsearch.ElasticsearchException;
import org.elasticsearch.common.Nullable;
import org.elasticsearch.common.settings.Settings;
import java.lang.reflect.Constructor;
/**
*
*/
public class Modules {
public static Module createModule(String moduleClass, Settings settings) throws ClassNotFoundException {
return createModule((Class) settings.getClassLoader().loadClass(moduleClass), settings);
}
public static Module createModule(Class moduleClass, @Nullable Settings settings) {
Constructor constructor;
try {
constructor = moduleClass.getConstructor(Settings.class);
try {
return constructor.newInstance(settings);
} catch (Exception e) {
throw new ElasticsearchException("Failed to create module [" + moduleClass + "]", e);
}
} catch (NoSuchMethodException e) {
try {
constructor = moduleClass.getConstructor();
try {
return constructor.newInstance();
} catch (Exception e1) {
throw new ElasticsearchException("Failed to create module [" + moduleClass + "]", e);
}
} catch (NoSuchMethodException e1) {
throw new ElasticsearchException("No constructor for [" + moduleClass + "]");
}
}
}
public static void processModules(Iterable modules) {
for (Module module : modules) {
if (module instanceof PreProcessModule) {
for (Module module1 : modules) {
((PreProcessModule) module).processModule(module1);
}
}
}
}
}