| /* |
| * Copyright 2015-2016 Open Networking Laboratory |
| * |
| * 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 org.onosproject.cluster.impl; |
| |
| import org.apache.felix.scr.annotations.Activate; |
| import org.apache.felix.scr.annotations.Component; |
| import org.apache.felix.scr.annotations.Deactivate; |
| import org.apache.felix.scr.annotations.Service; |
| import org.onlab.packet.IpAddress; |
| import org.onosproject.cluster.ClusterMetadata; |
| import org.onosproject.cluster.ClusterMetadataAdminService; |
| import org.onosproject.cluster.ClusterMetadataEvent; |
| import org.onosproject.cluster.ClusterMetadataEventListener; |
| import org.onosproject.cluster.ClusterMetadataProvider; |
| import org.onosproject.cluster.ClusterMetadataProviderRegistry; |
| import org.onosproject.cluster.ClusterMetadataProviderService; |
| import org.onosproject.cluster.ClusterMetadataService; |
| import org.onosproject.cluster.ControllerNode; |
| import org.onosproject.cluster.NodeId; |
| import org.onosproject.cluster.PartitionId; |
| import org.onosproject.net.provider.AbstractListenerProviderRegistry; |
| import org.onosproject.net.provider.AbstractProviderService; |
| import org.onosproject.store.service.Versioned; |
| import org.slf4j.Logger; |
| |
| import java.net.InetAddress; |
| import java.net.MalformedURLException; |
| import java.net.NetworkInterface; |
| import java.net.SocketException; |
| import java.net.URL; |
| import java.util.Collection; |
| import java.util.Enumeration; |
| |
| import static com.google.common.base.Preconditions.checkNotNull; |
| import static org.onosproject.security.AppGuard.checkPermission; |
| import static org.onosproject.security.AppPermission.Type.CLUSTER_READ; |
| import static org.slf4j.LoggerFactory.getLogger; |
| |
| /** |
| * Implementation of ClusterMetadataService. |
| */ |
| @Component(immediate = true) |
| @Service |
| public class ClusterMetadataManager |
| extends AbstractListenerProviderRegistry<ClusterMetadataEvent, |
| ClusterMetadataEventListener, |
| ClusterMetadataProvider, |
| ClusterMetadataProviderService> |
| implements ClusterMetadataService, ClusterMetadataAdminService, ClusterMetadataProviderRegistry { |
| |
| private final Logger log = getLogger(getClass()); |
| private ControllerNode localNode; |
| |
| @Activate |
| public void activate() { |
| // FIXME: Need to ensure all cluster metadata providers are registered before we activate |
| eventDispatcher.addSink(ClusterMetadataEvent.class, listenerRegistry); |
| log.info("Started"); |
| } |
| |
| @Deactivate |
| public void deactivate() { |
| eventDispatcher.removeSink(ClusterMetadataEvent.class); |
| log.info("Stopped"); |
| } |
| |
| @Override |
| public ClusterMetadata getClusterMetadata() { |
| checkPermission(CLUSTER_READ); |
| Versioned<ClusterMetadata> metadata = getProvider().getClusterMetadata(); |
| return metadata.value(); |
| } |
| |
| |
| @Override |
| protected ClusterMetadataProviderService createProviderService( |
| ClusterMetadataProvider provider) { |
| checkPermission(CLUSTER_READ); |
| return new InternalClusterMetadataProviderService(provider); |
| } |
| |
| @Override |
| public ControllerNode getLocalNode() { |
| checkPermission(CLUSTER_READ); |
| if (localNode == null) { |
| establishSelfIdentity(); |
| } |
| return localNode; |
| } |
| |
| @Override |
| public void setClusterMetadata(ClusterMetadata metadata) { |
| checkNotNull(metadata, "Cluster metadata cannot be null"); |
| ClusterMetadataProvider primaryProvider = getPrimaryProvider(); |
| if (primaryProvider == null) { |
| throw new IllegalStateException("Missing primary provider. Cannot update cluster metadata"); |
| } |
| primaryProvider.setClusterMetadata(metadata); |
| } |
| |
| /** |
| * Returns the provider to use for fetching cluster metadata. |
| * @return cluster metadata provider |
| */ |
| private ClusterMetadataProvider getProvider() { |
| ClusterMetadataProvider primaryProvider = getPrimaryProvider(); |
| if (primaryProvider != null && primaryProvider.isAvailable()) { |
| return primaryProvider; |
| } |
| log.warn("Primary cluster metadata provider not available. Using default fallback."); |
| return getProvider("default"); |
| } |
| |
| /** |
| * Returns the primary provider for cluster metadata. |
| * @return primary cluster metadata provider |
| */ |
| private ClusterMetadataProvider getPrimaryProvider() { |
| String metadataUri = System.getProperty("onos.cluster.metadata.uri"); |
| try { |
| String protocol = metadataUri == null ? null : new URL(metadataUri).getProtocol(); |
| if (protocol != null && (!protocol.equals("file") && !protocol.equals("http"))) { |
| return getProvider(protocol); |
| } |
| // file provider supports both "file" and "http" uris |
| return getProvider("file"); |
| } catch (MalformedURLException e) { |
| return null; |
| } |
| } |
| |
| private IpAddress findLocalIp(Collection<ControllerNode> controllerNodes) throws SocketException { |
| Enumeration<NetworkInterface> interfaces = |
| NetworkInterface.getNetworkInterfaces(); |
| while (interfaces.hasMoreElements()) { |
| NetworkInterface iface = interfaces.nextElement(); |
| Enumeration<InetAddress> inetAddresses = iface.getInetAddresses(); |
| while (inetAddresses.hasMoreElements()) { |
| IpAddress ip = IpAddress.valueOf(inetAddresses.nextElement()); |
| if (controllerNodes.stream() |
| .map(ControllerNode::ip) |
| .anyMatch(nodeIp -> ip.equals(nodeIp))) { |
| return ip; |
| } |
| } |
| } |
| throw new IllegalStateException("Unable to determine local ip"); |
| } |
| |
| private void establishSelfIdentity() { |
| try { |
| IpAddress ip = findLocalIp(getClusterMetadata().getNodes()); |
| localNode = getClusterMetadata().getNodes() |
| .stream() |
| .filter(node -> node.ip().equals(ip)) |
| .findFirst() |
| .get(); |
| } catch (SocketException e) { |
| throw new IllegalStateException("Cannot determine local IP", e); |
| } |
| } |
| |
| private class InternalClusterMetadataProviderService |
| extends AbstractProviderService<ClusterMetadataProvider> |
| implements ClusterMetadataProviderService { |
| |
| InternalClusterMetadataProviderService(ClusterMetadataProvider provider) { |
| super(provider); |
| } |
| |
| @Override |
| public void clusterMetadataChanged(Versioned<ClusterMetadata> newMetadata) { |
| log.info("Cluster metadata changed. New metadata: {}", newMetadata); |
| post(new ClusterMetadataEvent(ClusterMetadataEvent.Type.METADATA_CHANGED, newMetadata.value())); |
| } |
| |
| @Override |
| public void newActiveMemberForPartition(PartitionId partitionId, NodeId nodeId) { |
| log.info("Node {} is active member for partition {}", nodeId, partitionId); |
| // TODO: notify listeners |
| } |
| } |
| } |