2 * Copyright (c) 2016 Intel and its affiliates.
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at:
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
17 package io.fd.honeycomb.vppnsh.impl.util;
19 import com.google.inject.Inject;
20 import io.fd.honeycomb.infra.distro.ProviderTrait;
21 import io.fd.vpp.jvpp.JVppRegistry;
22 import io.fd.vpp.jvpp.nsh.JVppNshImpl;
23 import io.fd.vpp.jvpp.nsh.future.FutureJVppNshFacade;
24 import java.io.IOException;
25 import org.slf4j.Logger;
26 import org.slf4j.LoggerFactory;
29 * Provides future API for jvpp-nsh plugin. Must be a singleton due to shutdown hook usage.
30 * Registers shutdown hook to free plugin's resources on shutdown.
32 public final class JVppNshProvider extends ProviderTrait<FutureJVppNshFacade> {
34 private static final Logger LOG = LoggerFactory.getLogger(JVppNshProvider.class);
37 private JVppRegistry registry;
40 protected FutureJVppNshFacade create() {
42 final JVppNshImpl jVppNsh = new JVppNshImpl();
43 // Free jvpp-nsh plugin's resources on shutdown
44 Runtime.getRuntime().addShutdownHook(new Thread() {
47 LOG.info("Unloading jvpp-nsh plugin");
49 LOG.info("Successfully unloaded jvpp-nsh plugin");
53 LOG.info("Successfully loaded jvpp-nsh plugin");
54 return new FutureJVppNshFacade(registry, jVppNsh);
55 } catch (IOException e) {
56 throw new IllegalStateException("Unable to open VPP management connection", e);