Yuta HIGUCHI | a16a823 | 2014-07-03 19:45:40 -0700 | [diff] [blame] | 1 | package net.onrc.onos.core.util; |
| 2 | |
| 3 | import java.util.Objects; |
| 4 | |
| 5 | import org.apache.commons.lang.Validate; |
| 6 | |
| 7 | |
| 8 | /** |
| 9 | * Immutable class to identify a Link between 2 ports. |
| 10 | */ |
| 11 | public final class LinkTuple { |
| 12 | |
| 13 | private final SwitchPort src; |
| 14 | private final SwitchPort dst; |
| 15 | |
| 16 | /** |
| 17 | * Default constructor for Serializer. |
| 18 | */ |
| 19 | protected LinkTuple() { |
| 20 | src = null; |
| 21 | dst = null; |
| 22 | } |
| 23 | |
| 24 | /** |
| 25 | * Constructor. |
| 26 | * |
| 27 | * @param src source port |
| 28 | * @param dst destination port |
| 29 | */ |
| 30 | public LinkTuple(SwitchPort src, SwitchPort dst) { |
| 31 | Validate.notNull(src); |
| 32 | Validate.notNull(dst); |
| 33 | |
| 34 | this.src = src; |
| 35 | this.dst = dst; |
| 36 | } |
| 37 | |
| 38 | /** |
| 39 | * Creates the Link object. |
| 40 | * |
| 41 | * @param srcDpid source switch DPID |
| 42 | * @param srcPortNo source port number |
| 43 | * @param dstDpid destination switch DPID |
| 44 | * @param dstPortNo destination port number |
| 45 | */ |
| 46 | public LinkTuple(Dpid srcDpid, PortNumber srcPortNo, |
| 47 | Dpid dstDpid, PortNumber dstPortNo) { |
| 48 | this(new SwitchPort(srcDpid, srcPortNo), |
| 49 | new SwitchPort(dstDpid, dstPortNo)); |
| 50 | } |
| 51 | |
| 52 | /** |
| 53 | * Gets the source port. |
| 54 | * |
| 55 | * @return source port |
| 56 | */ |
| 57 | public SwitchPort getSrc() { |
| 58 | return src; |
| 59 | } |
| 60 | |
| 61 | /** |
| 62 | * Gets the destination port. |
| 63 | * |
| 64 | * @return destination port |
| 65 | */ |
| 66 | public SwitchPort getDst() { |
| 67 | return dst; |
| 68 | } |
| 69 | |
| 70 | @Override |
| 71 | public int hashCode() { |
| 72 | final int prime = 31; |
| 73 | int result = 1; |
| 74 | result = prime * result + ((src == null) ? 0 : src.hashCode()); |
| 75 | result = prime * result + ((dst == null) ? 0 : dst.hashCode()); |
| 76 | return result; |
| 77 | } |
| 78 | |
| 79 | @Override |
| 80 | public boolean equals(Object obj) { |
| 81 | if (this == obj) { |
| 82 | return true; |
| 83 | } |
| 84 | if (obj == null) { |
| 85 | return false; |
| 86 | } |
| 87 | if (getClass() != obj.getClass()) { |
| 88 | return false; |
| 89 | } |
| 90 | LinkTuple other = (LinkTuple) obj; |
| 91 | return Objects.equals(src, other.src) && |
| 92 | Objects.equals(dst, other.dst); |
| 93 | } |
| 94 | |
| 95 | @Override |
| 96 | public String toString() { |
| 97 | return "(" + src + "=>" + dst + ")"; |
| 98 | } |
| 99 | } |