| /* |
| * Copyright 2017-present Open Networking Foundation |
| * |
| * 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.bandwidthmgr; |
| |
| 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.net.Link; |
| import org.onosproject.net.LinkKey; |
| import org.onosproject.bandwidthmgr.api.BandwidthMgmtService; |
| import org.onosproject.bandwidthmgr.api.BandwidthMgmtStore; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import java.util.Set; |
| |
| import static com.google.common.base.Preconditions.checkNotNull; |
| |
| /** |
| * Implementation of PCE service. |
| */ |
| @Component(immediate = true) |
| @Service |
| public class BandwidthManager implements BandwidthMgmtService { |
| private static final Logger log = LoggerFactory.getLogger(BandwidthManager.class); |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| protected BandwidthMgmtStore store; |
| |
| @Activate |
| protected void activate() { |
| log.info("Started"); |
| } |
| |
| @Deactivate |
| protected void deactivate() { |
| log.info("Stopped"); |
| } |
| |
| @Override |
| public Double getTeCost(LinkKey linkKey) { |
| checkNotNull(linkKey); |
| return store.getTeCost(linkKey); |
| } |
| |
| @Override |
| public Double getAvailableBandwidth(LinkKey linkKey) { |
| checkNotNull(linkKey); |
| Set<Double> unResvBw = getUnreservedBw(linkKey); |
| Double localReservedBw = getAllocatedLocalReservedBw(linkKey); |
| if (unResvBw != null && localReservedBw != null) { |
| |
| return unResvBw.iterator().next().doubleValue() |
| - localReservedBw.doubleValue(); |
| } |
| if (unResvBw != null) { |
| return unResvBw.iterator().next().doubleValue(); |
| } else { |
| return null; |
| } |
| } |
| |
| @Override |
| public boolean allocLocalReservedBw(LinkKey linkKey, Double bandwidth) { |
| checkNotNull(linkKey); |
| checkNotNull(bandwidth); |
| return store.allocLocalReservedBw(linkKey, bandwidth); |
| } |
| |
| @Override |
| public boolean releaseLocalReservedBw(LinkKey linkkey, Double bandwidth) { |
| checkNotNull(linkkey); |
| checkNotNull(bandwidth); |
| return store.releaseLocalReservedBw(linkkey, bandwidth); |
| } |
| |
| @Override |
| public Double getAllocatedLocalReservedBw(LinkKey linkkey) { |
| checkNotNull(linkkey); |
| return store.getAllocatedLocalReservedBw(linkkey); |
| } |
| |
| @Override |
| public boolean addUnreservedBw(LinkKey linkKey, Set<Double> bandwidth) { |
| checkNotNull(linkKey); |
| checkNotNull(bandwidth); |
| return store.addUnreservedBw(linkKey, bandwidth); |
| } |
| |
| @Override |
| public boolean removeUnreservedBw(LinkKey linkkey) { |
| checkNotNull(linkkey); |
| return store.removeUnreservedBw(linkkey); |
| } |
| |
| @Override |
| public Set<Double> getUnreservedBw(LinkKey linkkey) { |
| checkNotNull(linkkey); |
| return store.getUnreservedBw(linkkey); |
| } |
| |
| @Override |
| public boolean isBandwidthAvailable(Link link, Double bandwidth) { |
| checkNotNull(link); |
| checkNotNull(bandwidth); |
| |
| LinkKey linkKey = LinkKey.linkKey(link); |
| Double localAllocBw = getAllocatedLocalReservedBw(linkKey); |
| |
| Set<Double> unResvBw = getUnreservedBw(linkKey); |
| Double prirZeroBw = unResvBw.iterator().next(); |
| |
| return (bandwidth <= prirZeroBw - (localAllocBw != null ? localAllocBw : 0)); |
| } |
| } |