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/*
* Copyright (c) 2016 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.nat.jvpp;
import com.google.inject.Inject;
import io.fd.honeycomb.infra.distro.ProviderTrait;
import io.fd.vpp.jvpp.JVppRegistry;
import io.fd.vpp.jvpp.snat.JVppSnatImpl;
import io.fd.vpp.jvpp.snat.future.FutureJVppSnatFacade;
import java.io.IOException;
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 JVppSnatProvider extends ProviderTrait<FutureJVppSnatFacade> {
private static final Logger LOG = LoggerFactory.getLogger(JVppSnatProvider.class);
@Inject
private JVppRegistry registry;
@Override
protected FutureJVppSnatFacade create() {
try {
final JVppSnatImpl jvppSnat = new JVppSnatImpl();
// Free jvpp-nsh plugin's resources on shutdown
Runtime.getRuntime().addShutdownHook(new Thread() {
@Override
public void run() {
LOG.info("Unloading jvpp-snat plugin");
jvppSnat.close();
LOG.info("Successfully unloaded jvpp-snat plugin");
}
});
LOG.info("Successfully loaded jvpp-snat plugin");
return new FutureJVppSnatFacade(registry, jvppSnat);
} catch (IOException e) {
throw new IllegalStateException("Unable to open VPP management connection", e);
}
}
}
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