Toshio Koide | a03915e | 2014-07-01 18:39:52 -0700 | [diff] [blame] | 1 | package net.onrc.onos.api.flowmanager; |
| 2 | |
Toshio Koide | 9aa4c0f | 2014-08-11 16:06:44 -0700 | [diff] [blame] | 3 | import static com.google.common.base.Preconditions.checkNotNull; |
| 4 | |
Toshio Koide | a03915e | 2014-07-01 18:39:52 -0700 | [diff] [blame] | 5 | import java.util.ArrayList; |
| 6 | import java.util.Iterator; |
| 7 | import java.util.List; |
| 8 | |
| 9 | import net.onrc.onos.core.util.Dpid; |
| 10 | |
| 11 | /** |
| 12 | * Path representation for the flow manager. |
| 13 | */ |
| 14 | public class Path extends FlowLinks { |
| 15 | /** |
| 16 | * Default constructor to create an empty path. |
| 17 | */ |
| 18 | public Path() { |
| 19 | super(); |
| 20 | } |
| 21 | |
| 22 | /** |
Toshio Koide | 9aa4c0f | 2014-08-11 16:06:44 -0700 | [diff] [blame] | 23 | * Constructor to create the object from the list of FlowLinks. |
| 24 | * |
| 25 | * @param links the list of FlowLinks |
| 26 | * @throws IllegalArgumentException if the links does not form a single |
| 27 | * connected directed path topology |
| 28 | */ |
| 29 | public Path(List<FlowLink> links) { |
| 30 | super(); |
| 31 | checkNotNull(links); |
| 32 | for (FlowLink link : links) { |
| 33 | if (!addLink(link)) { |
| 34 | throw new IllegalArgumentException(); |
| 35 | } |
| 36 | } |
| 37 | } |
| 38 | |
| 39 | /** |
| 40 | * Adds FlowLink to the Path object. |
| 41 | * |
| 42 | * @param link the FlowLink object to be added |
| 43 | * @return true if succeeded, false otherwise |
| 44 | */ |
| 45 | public boolean addLink(FlowLink link) { |
| 46 | // TODO check connectivity |
| 47 | checkNotNull(link); |
| 48 | return add(link); |
| 49 | } |
| 50 | |
| 51 | /** |
Toshio Koide | a03915e | 2014-07-01 18:39:52 -0700 | [diff] [blame] | 52 | * Gets a list of switch DPIDs of the path. |
| 53 | * |
| 54 | * @return a list of Dpid objects |
| 55 | */ |
| 56 | public List<Dpid> getDpids() { |
| 57 | if (size() < 1) { |
| 58 | return null; |
| 59 | } |
| 60 | |
| 61 | List<Dpid> dpids = new ArrayList<Dpid>(size() + 1); |
| 62 | dpids.add(getSrcDpid()); |
Toshio Koide | 9aa4c0f | 2014-08-11 16:06:44 -0700 | [diff] [blame] | 63 | for (FlowLink link : this) { |
Toshio Koide | a03915e | 2014-07-01 18:39:52 -0700 | [diff] [blame] | 64 | dpids.add(link.getDstDpid()); |
| 65 | } |
| 66 | return dpids; |
| 67 | } |
| 68 | |
| 69 | /** |
| 70 | * Gets the DPID of the first switch. |
| 71 | * |
| 72 | * @return a Dpid object of the first switch. |
| 73 | */ |
| 74 | public Dpid getSrcDpid() { |
| 75 | if (size() < 1) { |
| 76 | return null; |
| 77 | } |
| 78 | return get(0).getSrcDpid(); |
| 79 | } |
| 80 | |
| 81 | /** |
| 82 | * Gets the DPID of the last switch. |
| 83 | * |
| 84 | * @return a Dpid object of the last switch. |
| 85 | */ |
| 86 | public Dpid getDstDpid() { |
| 87 | if (size() < 1) { |
| 88 | return null; |
| 89 | } |
| 90 | return get(size() - 1).getDstDpid(); |
| 91 | } |
| 92 | |
| 93 | /** |
| 94 | * Returns a string representation of the path. |
| 95 | * |
| 96 | * @return a string representation of the path. |
| 97 | */ |
| 98 | @Override |
| 99 | public String toString() { |
| 100 | StringBuilder builder = new StringBuilder(); |
| 101 | Iterator<FlowLink> i = this.iterator(); |
| 102 | while (i.hasNext()) { |
| 103 | builder.append(i.next().toString()); |
| 104 | if (i.hasNext()) { |
| 105 | builder.append(", "); |
| 106 | } |
| 107 | } |
| 108 | return builder.toString(); |
| 109 | } |
| 110 | } |