Yuta HIGUCHI | 06dc6b9 | 2014-09-25 16:06:16 -0700 | [diff] [blame] | 1 | package org.onlab.onos.net; |
| 2 | |
Yuta HIGUCHI | 18ab8a9 | 2014-10-13 11:16:19 -0700 | [diff] [blame] | 3 | import static com.google.common.base.Preconditions.checkNotNull; |
| 4 | |
Yuta HIGUCHI | 06dc6b9 | 2014-09-25 16:06:16 -0700 | [diff] [blame] | 5 | import java.util.Objects; |
| 6 | |
| 7 | import com.google.common.base.MoreObjects; |
| 8 | |
| 9 | // TODO Consider renaming. |
| 10 | // it's an identifier for a Link, but it's not ElementId, so not using LinkId. |
tom | 95329eb | 2014-10-06 08:40:06 -0700 | [diff] [blame] | 11 | |
Yuta HIGUCHI | 06dc6b9 | 2014-09-25 16:06:16 -0700 | [diff] [blame] | 12 | /** |
| 13 | * Immutable representation of a link identity. |
| 14 | */ |
Yuta HIGUCHI | 18ab8a9 | 2014-10-13 11:16:19 -0700 | [diff] [blame] | 15 | public final class LinkKey { |
Yuta HIGUCHI | 06dc6b9 | 2014-09-25 16:06:16 -0700 | [diff] [blame] | 16 | |
| 17 | private final ConnectPoint src; |
| 18 | private final ConnectPoint dst; |
| 19 | |
| 20 | /** |
| 21 | * Returns source connection point. |
| 22 | * |
| 23 | * @return source connection point |
| 24 | */ |
| 25 | public ConnectPoint src() { |
| 26 | return src; |
| 27 | } |
| 28 | |
| 29 | /** |
| 30 | * Returns destination connection point. |
| 31 | * |
| 32 | * @return destination connection point |
| 33 | */ |
| 34 | public ConnectPoint dst() { |
| 35 | return dst; |
| 36 | } |
| 37 | |
| 38 | /** |
| 39 | * Creates a link identifier with source and destination connection point. |
| 40 | * |
| 41 | * @param src source connection point |
| 42 | * @param dst destination connection point |
| 43 | */ |
Yuta HIGUCHI | 18ab8a9 | 2014-10-13 11:16:19 -0700 | [diff] [blame] | 44 | private LinkKey(ConnectPoint src, ConnectPoint dst) { |
| 45 | this.src = checkNotNull(src); |
| 46 | this.dst = checkNotNull(dst); |
| 47 | } |
| 48 | |
| 49 | /** |
| 50 | * Creates a link identifier with source and destination connection point. |
| 51 | * |
| 52 | * @param src source connection point |
| 53 | * @param dst destination connection point |
| 54 | * @return a link identifier |
| 55 | */ |
| 56 | public static LinkKey linkKey(ConnectPoint src, ConnectPoint dst) { |
| 57 | return new LinkKey(src, dst); |
Yuta HIGUCHI | 06dc6b9 | 2014-09-25 16:06:16 -0700 | [diff] [blame] | 58 | } |
| 59 | |
tom | 95329eb | 2014-10-06 08:40:06 -0700 | [diff] [blame] | 60 | /** |
| 61 | * Creates a link identifier for the specified link. |
| 62 | * |
| 63 | * @param link link descriptor |
Yuta HIGUCHI | 18ab8a9 | 2014-10-13 11:16:19 -0700 | [diff] [blame] | 64 | * @return a link identifier |
tom | 95329eb | 2014-10-06 08:40:06 -0700 | [diff] [blame] | 65 | */ |
Yuta HIGUCHI | 18ab8a9 | 2014-10-13 11:16:19 -0700 | [diff] [blame] | 66 | public static LinkKey linkKey(Link link) { |
| 67 | return new LinkKey(link.src(), link.dst()); |
| 68 | } |
| 69 | |
Yuta HIGUCHI | 06dc6b9 | 2014-09-25 16:06:16 -0700 | [diff] [blame] | 70 | @Override |
| 71 | public int hashCode() { |
| 72 | return Objects.hash(src(), dst); |
| 73 | } |
| 74 | |
| 75 | @Override |
| 76 | public boolean equals(Object obj) { |
| 77 | if (this == obj) { |
| 78 | return true; |
| 79 | } |
| 80 | if (obj instanceof LinkKey) { |
| 81 | final LinkKey other = (LinkKey) obj; |
Yuta HIGUCHI | 18ab8a9 | 2014-10-13 11:16:19 -0700 | [diff] [blame] | 82 | return Objects.equals(this.src, other.src) && |
Yuta HIGUCHI | 06dc6b9 | 2014-09-25 16:06:16 -0700 | [diff] [blame] | 83 | Objects.equals(this.dst, other.dst); |
| 84 | } |
| 85 | return false; |
| 86 | } |
| 87 | |
| 88 | @Override |
| 89 | public String toString() { |
| 90 | return MoreObjects.toStringHelper(getClass()) |
Yuta HIGUCHI | 18ab8a9 | 2014-10-13 11:16:19 -0700 | [diff] [blame] | 91 | .add("src", src) |
Yuta HIGUCHI | 06dc6b9 | 2014-09-25 16:06:16 -0700 | [diff] [blame] | 92 | .add("dst", dst) |
| 93 | .toString(); |
| 94 | } |
| 95 | } |