| /* |
| * Copyright 2014-2015 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.net.resource.impl; |
| |
| import com.google.common.collect.Sets; |
| 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.Reference; |
| import org.apache.felix.scr.annotations.ReferenceCardinality; |
| import org.apache.felix.scr.annotations.Service; |
| import org.onosproject.event.AbstractListenerManager; |
| import org.onosproject.net.Link; |
| import org.onosproject.net.intent.IntentId; |
| import org.onosproject.net.resource.ResourceAllocation; |
| import org.onosproject.net.resource.ResourceRequest; |
| import org.onosproject.net.resource.ResourceType; |
| import org.onosproject.net.resource.link.BandwidthResourceAllocation; |
| import org.onosproject.net.resource.link.BandwidthResourceRequest; |
| import org.onosproject.net.resource.link.DefaultLinkResourceAllocations; |
| import org.onosproject.net.resource.link.LambdaResourceAllocation; |
| import org.onosproject.net.resource.link.LambdaResourceRequest; |
| import org.onosproject.net.resource.link.LinkResourceAllocations; |
| import org.onosproject.net.resource.link.LinkResourceEvent; |
| import org.onosproject.net.resource.link.LinkResourceListener; |
| import org.onosproject.net.resource.link.LinkResourceRequest; |
| import org.onosproject.net.resource.link.LinkResourceService; |
| import org.onosproject.net.resource.link.LinkResourceStore; |
| import org.onosproject.net.resource.link.LinkResourceStoreDelegate; |
| import org.onosproject.net.resource.link.MplsLabel; |
| import org.onosproject.net.resource.link.MplsLabelResourceAllocation; |
| import org.onosproject.net.resource.link.MplsLabelResourceRequest; |
| import org.slf4j.Logger; |
| |
| import java.util.HashMap; |
| import java.util.HashSet; |
| import java.util.Map; |
| import java.util.Optional; |
| import java.util.Set; |
| |
| import static org.onosproject.security.AppGuard.checkPermission; |
| import static org.slf4j.LoggerFactory.getLogger; |
| import static org.onosproject.security.AppPermission.Type.*; |
| |
| |
| /** |
| * Provides basic implementation of link resources allocation. |
| */ |
| @Component(immediate = true) |
| @Service |
| public class LinkResourceManager |
| extends AbstractListenerManager<LinkResourceEvent, LinkResourceListener> |
| implements LinkResourceService { |
| |
| private final Logger log = getLogger(getClass()); |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| private LinkResourceStore store; |
| |
| @Activate |
| public void activate() { |
| eventDispatcher.addSink(LinkResourceEvent.class, listenerRegistry); |
| log.info("Started"); |
| } |
| |
| @Deactivate |
| public void deactivate() { |
| eventDispatcher.removeSink(LinkResourceEvent.class); |
| log.info("Stopped"); |
| } |
| |
| |
| @Override |
| public LinkResourceAllocations requestResources(LinkResourceRequest req) { |
| checkPermission(LINK_WRITE); |
| |
| // TODO Concatenate multiple bandwidth requests. |
| // TODO Support multiple lambda resource requests. |
| // TODO Throw appropriate exception. |
| Set<ResourceAllocation> allocs = new HashSet<>(); |
| Map<Link, Set<ResourceAllocation>> allocsPerLink = new HashMap<>(); |
| for (ResourceRequest r : req.resources()) { |
| switch (r.type()) { |
| case BANDWIDTH: |
| BandwidthResourceRequest br = (BandwidthResourceRequest) r; |
| allocs.add(new BandwidthResourceAllocation(br.bandwidth())); |
| break; |
| case LAMBDA: |
| LambdaResourceRequest lr = (LambdaResourceRequest) r; |
| allocs.add(new LambdaResourceAllocation(lr.lambda())); |
| break; |
| case MPLS_LABEL: |
| for (Link link : req.links()) { |
| if (allocsPerLink.get(link) == null) { |
| allocsPerLink.put(link, new HashSet<>()); |
| } |
| |
| Optional<MplsLabel> label = req.resources(link).stream() |
| .filter(x -> x.type() == ResourceType.MPLS_LABEL) |
| .map(x -> (MplsLabelResourceRequest) x) |
| .map(MplsLabelResourceRequest::mplsLabel) |
| .findFirst(); |
| |
| if (label.isPresent()) { |
| allocsPerLink.get(link).add(new MplsLabelResourceAllocation(label.get())); |
| } else { |
| log.info("Failed to allocate MPLS resource."); |
| break; |
| } |
| } |
| break; |
| default: |
| break; |
| } |
| } |
| |
| Map<Link, Set<ResourceAllocation>> allocations = new HashMap<>(); |
| for (Link link : req.links()) { |
| allocations.put(link, new HashSet<>(allocs)); |
| Set<ResourceAllocation> linkAllocs = allocsPerLink.get(link); |
| if (linkAllocs != null) { |
| allocations.get(link).addAll(linkAllocs); |
| } |
| } |
| LinkResourceAllocations result = |
| new DefaultLinkResourceAllocations(req, allocations); |
| store.allocateResources(result); |
| return result; |
| |
| } |
| |
| @Override |
| public void releaseResources(LinkResourceAllocations allocations) { |
| checkPermission(LINK_WRITE); |
| final LinkResourceEvent event = store.releaseResources(allocations); |
| if (event != null) { |
| post(event); |
| } |
| } |
| |
| @Override |
| public LinkResourceAllocations updateResources(LinkResourceRequest req, |
| LinkResourceAllocations oldAllocations) { |
| checkPermission(LINK_WRITE); |
| releaseResources(oldAllocations); |
| return requestResources(req); |
| } |
| |
| @Override |
| public Iterable<LinkResourceAllocations> getAllocations() { |
| checkPermission(LINK_READ); |
| return store.getAllocations(); |
| } |
| |
| @Override |
| public Iterable<LinkResourceAllocations> getAllocations(Link link) { |
| checkPermission(LINK_READ); |
| return store.getAllocations(link); |
| } |
| |
| @Override |
| public LinkResourceAllocations getAllocations(IntentId intentId) { |
| checkPermission(LINK_READ); |
| return store.getAllocations(intentId); |
| } |
| |
| @Override |
| public Iterable<ResourceRequest> getAvailableResources(Link link) { |
| checkPermission(LINK_READ); |
| |
| Set<ResourceAllocation> freeRes = store.getFreeResources(link); |
| Set<ResourceRequest> result = new HashSet<>(); |
| for (ResourceAllocation alloc : freeRes) { |
| switch (alloc.type()) { |
| case BANDWIDTH: |
| result.add(new BandwidthResourceRequest( |
| ((BandwidthResourceAllocation) alloc).bandwidth())); |
| break; |
| case LAMBDA: |
| result.add(new LambdaResourceRequest( |
| ((LambdaResourceAllocation) alloc).lambda())); |
| break; |
| case MPLS_LABEL: |
| result.add(new MplsLabelResourceRequest( |
| ((MplsLabelResourceAllocation) alloc).mplsLabel())); |
| break; |
| default: |
| break; |
| } |
| } |
| return result; |
| } |
| |
| @Override |
| public Iterable<ResourceRequest> getAvailableResources(Link link, |
| LinkResourceAllocations allocations) { |
| checkPermission(LINK_READ); |
| |
| Set<ResourceAllocation> allocatedRes = allocations.getResourceAllocation(link); |
| Set<ResourceRequest> result = Sets.newHashSet(getAvailableResources(link)); |
| result.removeAll(allocatedRes); |
| return result; |
| } |
| |
| /** |
| * Store delegate to re-post events emitted from the store. |
| */ |
| private class InternalStoreDelegate implements LinkResourceStoreDelegate { |
| @Override |
| public void notify(LinkResourceEvent event) { |
| post(event); |
| } |
| } |
| } |