/*
* Licensed to ElasticSearch and Shay Banon under one
* or more contributor license agreements. See the NOTICE file
* distributed with 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.river;
import com.google.common.collect.ImmutableList;
import org.elasticsearch.common.Strings;
import org.elasticsearch.common.inject.AbstractModule;
import org.elasticsearch.common.inject.Module;
import org.elasticsearch.common.inject.Modules;
import org.elasticsearch.common.inject.SpawnModules;
import org.elasticsearch.common.settings.NoClassSettingsException;
import org.elasticsearch.common.settings.Settings;
import java.util.Map;
import static org.elasticsearch.common.Strings.toCamelCase;
/**
*
*/
public class RiverModule extends AbstractModule implements SpawnModules {
private RiverName riverName;
private final Settings globalSettings;
private final Map<String, Object> settings;
private final RiversTypesRegistry typesRegistry;
public RiverModule(RiverName riverName, Map<String, Object> settings, Settings globalSettings, RiversTypesRegistry typesRegistry) {
this.riverName = riverName;
this.globalSettings = globalSettings;
this.settings = settings;
this.typesRegistry = typesRegistry;
}
@Override
public Iterable<? extends Module> spawnModules() {
return ImmutableList.of(Modules.createModule(loadTypeModule(riverName.type(), "org.elasticsearch.river.", "RiverModule"), globalSettings));
}
@Override
protected void configure() {
bind(RiverSettings.class).toInstance(new RiverSettings(globalSettings, settings));
}
private Class<? extends Module> loadTypeModule(String type, String prefixPackage, String suffixClassName) {
Class<? extends Module> registered = typesRegistry.type(type);
if (registered != null) {
return registered;
}
String fullClassName = type;
try {
return (Class<? extends Module>) globalSettings.getClassLoader().loadClass(fullClassName);
} catch (ClassNotFoundException e) {
fullClassName = prefixPackage + Strings.capitalize(toCamelCase(type)) + suffixClassName;
try {
return (Class<? extends Module>) globalSettings.getClassLoader().loadClass(fullClassName);
} catch (ClassNotFoundException e1) {
fullClassName = prefixPackage + toCamelCase(type) + "." + Strings.capitalize(toCamelCase(type)) + suffixClassName;
try {
return (Class<? extends Module>) globalSettings.getClassLoader().loadClass(fullClassName);
} catch (ClassNotFoundException e2) {
fullClassName = prefixPackage + toCamelCase(type).toLowerCase() + "." + Strings.capitalize(toCamelCase(type)) + suffixClassName;
try {
return (Class<? extends Module>) globalSettings.getClassLoader().loadClass(fullClassName);
} catch (ClassNotFoundException e3) {
throw new NoClassSettingsException("Failed to load class with value [" + type + "]", e);
}
}
}
}
}
}