2 * Copyright (c) 2015 Cisco Systems, Inc. and others. All rights reserved.
4 * This program and the accompanying materials are made available under the
5 * terms of the Eclipse Public License v1.0 which accompanies this distribution,
6 * and is available at http://www.eclipse.org/legal/epl-v10.html
9 package org.opendaylight.protocol.bmp.spi.registry;
11 import static java.util.Objects.requireNonNull;
13 import com.google.common.base.Preconditions;
14 import java.util.List;
15 import javax.annotation.Nonnull;
16 import javax.annotation.concurrent.GuardedBy;
17 import org.slf4j.Logger;
18 import org.slf4j.LoggerFactory;
21 * Created by cgasparini on 15.5.2015.
23 public abstract class AbstractBmpExtensionProviderActivator implements AutoCloseable, BmpExtensionProviderActivator {
24 private static final Logger LOG = LoggerFactory.getLogger(AbstractBmpExtensionProviderActivator.class);
27 private List<AutoCloseable> registrations;
30 protected abstract List<AutoCloseable> startImpl(final BmpExtensionProviderContext context);
33 public final void close() {
38 public final synchronized void start(@Nonnull final BmpExtensionProviderContext context) {
39 Preconditions.checkState(this.registrations == null);
40 this.registrations = requireNonNull(startImpl(context));
44 public final synchronized void stop() {
45 Preconditions.checkState(this.registrations != null);
47 for (final AutoCloseable r : this.registrations) {
50 } catch (final Exception e) {
51 LOG.warn("Failed to close registration", e);
55 this.registrations = null;