Satish K | 2eb5d84 | 2017-04-04 16:28:37 +0530 | [diff] [blame] | 1 | /* |
Brian O'Connor | a09fe5b | 2017-08-03 21:12:30 -0700 | [diff] [blame] | 2 | * Copyright 2017-present Open Networking Foundation |
Satish K | 2eb5d84 | 2017-04-04 16:28:37 +0530 | [diff] [blame] | 3 | * |
| 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 |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 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. |
| 15 | */ |
| 16 | package org.onosproject.bandwidthmgr; |
| 17 | |
| 18 | import org.apache.felix.scr.annotations.Activate; |
| 19 | import org.apache.felix.scr.annotations.Component; |
| 20 | import org.apache.felix.scr.annotations.Deactivate; |
| 21 | import org.apache.felix.scr.annotations.Reference; |
| 22 | import org.apache.felix.scr.annotations.ReferenceCardinality; |
| 23 | import org.apache.felix.scr.annotations.Service; |
| 24 | import org.onosproject.net.Link; |
| 25 | import org.onosproject.net.LinkKey; |
| 26 | import org.onosproject.bandwidthmgr.api.BandwidthMgmtService; |
| 27 | import org.onosproject.bandwidthmgr.api.BandwidthMgmtStore; |
| 28 | import org.slf4j.Logger; |
| 29 | import org.slf4j.LoggerFactory; |
| 30 | |
| 31 | import java.util.Set; |
| 32 | |
| 33 | import static com.google.common.base.Preconditions.checkNotNull; |
| 34 | |
| 35 | /** |
| 36 | * Implementation of PCE service. |
| 37 | */ |
| 38 | @Component(immediate = true) |
| 39 | @Service |
| 40 | public class BandwidthManager implements BandwidthMgmtService { |
| 41 | private static final Logger log = LoggerFactory.getLogger(BandwidthManager.class); |
| 42 | |
| 43 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| 44 | protected BandwidthMgmtStore store; |
| 45 | |
| 46 | @Activate |
| 47 | protected void activate() { |
| 48 | log.info("Started"); |
| 49 | } |
| 50 | |
| 51 | @Deactivate |
| 52 | protected void deactivate() { |
| 53 | log.info("Stopped"); |
| 54 | } |
| 55 | |
| 56 | @Override |
| 57 | public Double getTeCost(LinkKey linkKey) { |
| 58 | checkNotNull(linkKey); |
| 59 | return store.getTeCost(linkKey); |
| 60 | } |
| 61 | |
| 62 | @Override |
| 63 | public Double getAvailableBandwidth(LinkKey linkKey) { |
| 64 | checkNotNull(linkKey); |
| 65 | Set<Double> unResvBw = getUnreservedBw(linkKey); |
| 66 | Double localReservedBw = getAllocatedLocalReservedBw(linkKey); |
| 67 | if (unResvBw != null && localReservedBw != null) { |
| 68 | |
| 69 | return unResvBw.iterator().next().doubleValue() |
| 70 | - localReservedBw.doubleValue(); |
| 71 | } |
rohitsharan | be94db9 | 2017-04-17 17:28:20 +0530 | [diff] [blame] | 72 | if (unResvBw != null) { |
| 73 | return unResvBw.iterator().next().doubleValue(); |
| 74 | } else { |
| 75 | return null; |
| 76 | } |
Satish K | 2eb5d84 | 2017-04-04 16:28:37 +0530 | [diff] [blame] | 77 | } |
| 78 | |
| 79 | @Override |
| 80 | public boolean allocLocalReservedBw(LinkKey linkKey, Double bandwidth) { |
| 81 | checkNotNull(linkKey); |
| 82 | checkNotNull(bandwidth); |
| 83 | return store.allocLocalReservedBw(linkKey, bandwidth); |
| 84 | } |
| 85 | |
| 86 | @Override |
| 87 | public boolean releaseLocalReservedBw(LinkKey linkkey, Double bandwidth) { |
| 88 | checkNotNull(linkkey); |
| 89 | checkNotNull(bandwidth); |
| 90 | return store.releaseLocalReservedBw(linkkey, bandwidth); |
| 91 | } |
| 92 | |
| 93 | @Override |
| 94 | public Double getAllocatedLocalReservedBw(LinkKey linkkey) { |
| 95 | checkNotNull(linkkey); |
| 96 | return store.getAllocatedLocalReservedBw(linkkey); |
| 97 | } |
| 98 | |
| 99 | @Override |
| 100 | public boolean addUnreservedBw(LinkKey linkKey, Set<Double> bandwidth) { |
| 101 | checkNotNull(linkKey); |
| 102 | checkNotNull(bandwidth); |
| 103 | return store.addUnreservedBw(linkKey, bandwidth); |
| 104 | } |
| 105 | |
| 106 | @Override |
| 107 | public boolean removeUnreservedBw(LinkKey linkkey) { |
| 108 | checkNotNull(linkkey); |
| 109 | return store.removeUnreservedBw(linkkey); |
| 110 | } |
| 111 | |
| 112 | @Override |
| 113 | public Set<Double> getUnreservedBw(LinkKey linkkey) { |
| 114 | checkNotNull(linkkey); |
| 115 | return store.getUnreservedBw(linkkey); |
| 116 | } |
| 117 | |
| 118 | @Override |
| 119 | public boolean isBandwidthAvailable(Link link, Double bandwidth) { |
| 120 | checkNotNull(link); |
| 121 | checkNotNull(bandwidth); |
| 122 | |
| 123 | LinkKey linkKey = LinkKey.linkKey(link); |
| 124 | Double localAllocBw = getAllocatedLocalReservedBw(linkKey); |
| 125 | |
| 126 | Set<Double> unResvBw = getUnreservedBw(linkKey); |
| 127 | Double prirZeroBw = unResvBw.iterator().next(); |
| 128 | |
| 129 | return (bandwidth <= prirZeroBw - (localAllocBw != null ? localAllocBw : 0)); |
| 130 | } |
rohitsharan | be94db9 | 2017-04-17 17:28:20 +0530 | [diff] [blame] | 131 | } |