Toshio Koide | a03915e | 2014-07-01 18:39:52 -0700 | [diff] [blame] | 1 | package net.onrc.onos.api.flowmanager; |
| 2 | |
| 3 | import java.util.ArrayList; |
| 4 | import java.util.Iterator; |
| 5 | import java.util.List; |
| 6 | |
| 7 | import net.onrc.onos.core.util.Dpid; |
| 8 | |
| 9 | /** |
| 10 | * Path representation for the flow manager. |
| 11 | */ |
| 12 | public class Path extends FlowLinks { |
| 13 | /** |
| 14 | * Default constructor to create an empty path. |
| 15 | */ |
| 16 | public Path() { |
| 17 | super(); |
| 18 | } |
| 19 | |
| 20 | /** |
| 21 | * Gets a list of switch DPIDs of the path. |
| 22 | * |
| 23 | * @return a list of Dpid objects |
| 24 | */ |
| 25 | public List<Dpid> getDpids() { |
| 26 | if (size() < 1) { |
| 27 | return null; |
| 28 | } |
| 29 | |
| 30 | List<Dpid> dpids = new ArrayList<Dpid>(size() + 1); |
| 31 | dpids.add(getSrcDpid()); |
| 32 | for (FlowLink link: this) { |
| 33 | dpids.add(link.getDstDpid()); |
| 34 | } |
| 35 | return dpids; |
| 36 | } |
| 37 | |
| 38 | /** |
| 39 | * Gets the DPID of the first switch. |
| 40 | * |
| 41 | * @return a Dpid object of the first switch. |
| 42 | */ |
| 43 | public Dpid getSrcDpid() { |
| 44 | if (size() < 1) { |
| 45 | return null; |
| 46 | } |
| 47 | return get(0).getSrcDpid(); |
| 48 | } |
| 49 | |
| 50 | /** |
| 51 | * Gets the DPID of the last switch. |
| 52 | * |
| 53 | * @return a Dpid object of the last switch. |
| 54 | */ |
| 55 | public Dpid getDstDpid() { |
| 56 | if (size() < 1) { |
| 57 | return null; |
| 58 | } |
| 59 | return get(size() - 1).getDstDpid(); |
| 60 | } |
| 61 | |
| 62 | /** |
| 63 | * Returns a string representation of the path. |
| 64 | * |
| 65 | * @return a string representation of the path. |
| 66 | */ |
| 67 | @Override |
| 68 | public String toString() { |
| 69 | StringBuilder builder = new StringBuilder(); |
| 70 | Iterator<FlowLink> i = this.iterator(); |
| 71 | while (i.hasNext()) { |
| 72 | builder.append(i.next().toString()); |
| 73 | if (i.hasNext()) { |
| 74 | builder.append(", "); |
| 75 | } |
| 76 | } |
| 77 | return builder.toString(); |
| 78 | } |
| 79 | } |