Andreas Wundsam | 40e14f7 | 2013-05-06 14:49:08 -0700 | [diff] [blame] | 1 | package org.openflow.types; |
| 2 | |
Andreas Wundsam | 40e14f7 | 2013-05-06 14:49:08 -0700 | [diff] [blame] | 3 | |
Yotam Harchol | 161a5d5 | 2013-07-25 17:17:48 -0700 | [diff] [blame^] | 4 | |
| 5 | public class Masked<T extends OFValueType> implements OFValueType { |
| 6 | private T value; |
| 7 | private T mask; |
| 8 | |
| 9 | private Masked(T value, T mask) { |
| 10 | this.value = value; |
| 11 | this.mask = mask; |
| 12 | } |
| 13 | |
| 14 | public T getValue() { |
| 15 | return value; |
| 16 | } |
| 17 | |
| 18 | public T getMask() { |
| 19 | return mask; |
| 20 | } |
| 21 | |
| 22 | @Override |
| 23 | public int getLength() { |
| 24 | return this.value.getLength() + this.mask.getLength(); |
| 25 | } |
| 26 | |
| 27 | volatile byte[] bytesCache = null; |
| 28 | |
| 29 | @Override |
| 30 | public byte[] getBytes() { |
| 31 | if (bytesCache == null) { |
| 32 | synchronized(this) { |
| 33 | if (bytesCache == null) { |
| 34 | byte[] bytesValue = this.value.getBytes(); |
| 35 | byte[] bytesMask = this.mask.getBytes(); |
| 36 | bytesCache = new byte[bytesValue.length + bytesMask.length]; |
| 37 | System.arraycopy(bytesValue, 0, bytesCache, 0, bytesValue.length); |
| 38 | System.arraycopy(bytesMask, 0, bytesCache, bytesValue.length, bytesMask.length); |
| 39 | } |
| 40 | } |
| 41 | } |
| 42 | return bytesCache; |
| 43 | } |
| 44 | |
| 45 | public static <T extends OFValueType> Masked<T> of(T value, T mask) { |
| 46 | return new Masked<T>(value, mask); |
| 47 | } |
| 48 | |
| 49 | @Override |
| 50 | public boolean equals(Object obj) { |
| 51 | if (!(obj instanceof Masked<?>)) |
| 52 | return false; |
| 53 | Masked<?> mobj = (Masked<?>)obj; |
| 54 | return this.value.equals(mobj.value) && this.mask.equals(mobj.mask); |
| 55 | } |
| 56 | |
| 57 | @Override |
| 58 | public int hashCode() { |
| 59 | final int prime = 59; |
| 60 | int result = 1; |
| 61 | result = prime * result + this.value.hashCode(); |
| 62 | result = prime * result + this.mask.hashCode(); |
| 63 | return result; |
| 64 | } |
| 65 | |
| 66 | @Override |
| 67 | public String toString() { |
| 68 | if (value.getClass() == IPv4.class) { |
| 69 | // TODO: How to output the mask when not in CIDR notation? |
| 70 | StringBuilder res = new StringBuilder(); |
| 71 | res.append(((IPv4)value).toString()); |
| 72 | |
| 73 | int maskint = ((IPv4)mask).getInt(); |
| 74 | if (Integer.bitCount((~maskint) + 1) == 1) { |
| 75 | // CIDR notation |
| 76 | res.append('/'); |
| 77 | res.append(Integer.bitCount(maskint)); |
| 78 | } else { |
| 79 | // Arbitrary mask not in CIDR notation |
| 80 | // TODO: HERE? |
| 81 | } |
| 82 | |
| 83 | return res.toString(); |
| 84 | } else if (value.getClass() == IPv6.class) { |
| 85 | // TODO: Return IPv6 string |
| 86 | StringBuilder sb = new StringBuilder(); |
| 87 | sb.append(value.toString()).append('/').append(mask.toString()); |
| 88 | return sb.toString(); |
| 89 | } else { |
| 90 | // General representation: value/mask |
| 91 | StringBuilder sb = new StringBuilder(); |
| 92 | sb.append(value.toString()).append('/').append(mask.toString()); |
| 93 | return sb.toString(); |
| 94 | } |
| 95 | } |
| 96 | |
Andreas Wundsam | 40e14f7 | 2013-05-06 14:49:08 -0700 | [diff] [blame] | 97 | } |