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/*
* Copyright (c) 2017 Cisco and/or its affiliates.
*
* Licensed 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 io.fd.honeycomb.northbound;
import com.google.inject.Guice;
import com.google.inject.Injector;
import com.google.inject.Module;
import com.google.inject.PrivateModule;
/**
* Base class for Honeycomb's PrivateModules, that are initialized conditionally based on specific configuration.
*
* @param <T> module configuration type
*/
public abstract class NorthboundPrivateModule<T> extends PrivateModule implements ConfigurationSupplier<T> {
private final Class<T> configClass;
private final Module configurationModule;
private final Injector injector;
protected NorthboundPrivateModule(final Module configurationModule, final Class<T> configClass) {
this.configurationModule = configurationModule;
this.configClass = configClass;
this.injector = Guice.createInjector(configurationModule);
}
@Override
public final Module getConfigurationModule() {
return configurationModule;
}
@Override
public final T getConfiguration() {
return injector.getInstance(configClass);
}
}
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