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/*
* Copyright (c) 2016 Intel and 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.vppnsh.impl.util;
import com.google.inject.Inject;
import io.fd.honeycomb.infra.distro.ProviderTrait;
import java.io.IOException;
import org.openvpp.jvpp.JVppRegistry;
import org.openvpp.jvpp.nsh.future.FutureJVppNsh;
import org.openvpp.jvpp.nsh.future.FutureJVppNshFacade;
import org.openvpp.jvpp.nsh.JVppNshImpl;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* Provides future API for jvpp-nsh plugin. Must be a singleton due to shutdown hook usage.
* Registers shutdown hook to free plugin's resources on shutdown.
*/
public final class JVppNshProvider extends ProviderTrait<FutureJVppNsh> {
private static final Logger LOG = LoggerFactory.getLogger(JVppNshProvider.class);
@Inject
private JVppRegistry registry;
@Override
protected FutureJVppNshFacade create() {
try {
final JVppNshImpl jVppNsh = new JVppNshImpl();
// Free jvpp-nsh plugin's resources on shutdown
Runtime.getRuntime().addShutdownHook(new Thread() {
@Override
public void run() {
LOG.info("Unloading jvpp-nsh plugin");
jVppNsh.close();
LOG.info("Successfully unloaded jvpp-nsh plugin");
}
});
LOG.info("Successfully loaded jvpp-nsh plugin");
return new FutureJVppNshFacade(registry, jVppNsh);
} catch (IOException e) {
throw new IllegalStateException("Unable to open VPP management connection", e);
}
}
}
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