Umesh Krishnaswamy | 345ee99 | 2012-12-13 20:29:48 -0800 | [diff] [blame] | 1 | /** |
| 2 | * Copyright 2012, Big Switch Networks, Inc. |
| 3 | * Originally created by David Erickson, Stanford University |
| 4 | * |
| 5 | * Licensed under the Apache License, Version 2.0 (the "License"); you may |
| 6 | * not use this file except in compliance with the License. You may obtain |
| 7 | * a copy of the License at |
| 8 | * |
| 9 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 10 | * |
| 11 | * Unless required by applicable law or agreed to in writing, software |
| 12 | * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT |
| 13 | * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the |
| 14 | * License for the specific language governing permissions and limitations |
| 15 | * under the License. |
| 16 | **/ |
| 17 | |
| 18 | package net.floodlightcontroller.devicemanager.internal; |
| 19 | |
| 20 | import java.util.Arrays; |
| 21 | import java.util.Iterator; |
| 22 | |
| 23 | import net.floodlightcontroller.devicemanager.IEntityClass; |
| 24 | import net.floodlightcontroller.devicemanager.SwitchPort; |
| 25 | import net.floodlightcontroller.util.FilterIterator; |
| 26 | |
| 27 | /** |
| 28 | * An iterator for handling device queries |
| 29 | */ |
| 30 | public class DeviceIterator extends FilterIterator<Device> { |
| 31 | private IEntityClass[] entityClasses; |
| 32 | |
| 33 | private Long macAddress; |
| 34 | private Short vlan; |
| 35 | private Integer ipv4Address; |
| 36 | private Long switchDPID; |
| 37 | private Integer switchPort; |
| 38 | |
| 39 | /** |
| 40 | * Construct a new device iterator over the key fields |
| 41 | * @param subIterator an iterator over the full data structure to scan |
| 42 | * @param entityClasses the entity classes to search for |
| 43 | * @param macAddress The MAC address |
| 44 | * @param vlan the VLAN |
| 45 | * @param ipv4Address the ipv4 address |
| 46 | * @param switchDPID the switch DPID |
| 47 | * @param switchPort the switch port |
| 48 | */ |
| 49 | public DeviceIterator(Iterator<Device> subIterator, |
| 50 | IEntityClass[] entityClasses, |
| 51 | Long macAddress, |
| 52 | Short vlan, |
| 53 | Integer ipv4Address, |
| 54 | Long switchDPID, |
| 55 | Integer switchPort) { |
| 56 | super(subIterator); |
| 57 | this.entityClasses = entityClasses; |
| 58 | this.subIterator = subIterator; |
| 59 | this.macAddress = macAddress; |
| 60 | this.vlan = vlan; |
| 61 | this.ipv4Address = ipv4Address; |
| 62 | this.switchDPID = switchDPID; |
| 63 | this.switchPort = switchPort; |
| 64 | } |
| 65 | |
| 66 | @Override |
| 67 | protected boolean matches(Device value) { |
| 68 | boolean match; |
| 69 | if (entityClasses != null) { |
| 70 | IEntityClass clazz = value.getEntityClass(); |
| 71 | if (clazz == null) return false; |
| 72 | |
| 73 | match = false; |
| 74 | for (IEntityClass entityClass : entityClasses) { |
| 75 | if (clazz.equals(entityClass)) { |
| 76 | match = true; |
| 77 | break; |
| 78 | } |
| 79 | } |
| 80 | if (!match) return false; |
| 81 | } |
| 82 | if (macAddress != null) { |
| 83 | if (macAddress.longValue() != value.getMACAddress()) |
| 84 | return false; |
| 85 | } |
| 86 | if (vlan != null) { |
| 87 | Short[] vlans = value.getVlanId(); |
| 88 | if (Arrays.binarySearch(vlans, vlan) < 0) |
| 89 | return false; |
| 90 | } |
| 91 | if (ipv4Address != null) { |
| 92 | Integer[] ipv4Addresses = value.getIPv4Addresses(); |
| 93 | if (Arrays.binarySearch(ipv4Addresses, ipv4Address) < 0) |
| 94 | return false; |
| 95 | } |
| 96 | if (switchDPID != null || switchPort != null) { |
| 97 | SwitchPort[] sps = value.getAttachmentPoints(); |
| 98 | if (sps == null) return false; |
| 99 | |
| 100 | match = false; |
| 101 | for (SwitchPort sp : sps) { |
| 102 | if (switchDPID != null) { |
| 103 | if (switchDPID.longValue() != sp.getSwitchDPID()) |
| 104 | return false; |
| 105 | } |
| 106 | if (switchPort != null) { |
| 107 | if (switchPort.intValue() != sp.getPort()) |
| 108 | return false; |
| 109 | } |
| 110 | match = true; |
| 111 | break; |
| 112 | } |
| 113 | if (!match) return false; |
| 114 | } |
| 115 | return true; |
| 116 | } |
| 117 | } |