blob: 24f4ae9aa90b81f0da2f6ae3d491304cc99f63be (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
|
/*
* Copyright (c) 2016 Cisco and/or its affiliates.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package io.fd.hc2vpp.common.translate.util;
import static com.google.common.base.Preconditions.checkNotNull;
import java.util.Arrays;
import javax.annotation.Nonnull;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.IetfInetUtil;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.Ipv4AddressNoZone;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.Ipv4Prefix;
/**
* Trait providing logic for translation of ipv4-related data.
*/
public interface Ipv4Translator extends ByteDataTranslator {
/**
* Make available also from static context.
*/
Ipv4Translator INSTANCE = new Ipv4Translator() {
};
/**
* Creates address array from address part of {@link Ipv4Prefix}
*/
default byte[] ipv4AddressPrefixToArray(@Nonnull final Ipv4Prefix ipv4Prefix) {
checkNotNull(ipv4Prefix, "Cannot convert null prefix");
byte[] retval = new byte[4];
String[] address = ipv4Prefix.getValue().substring(0, ipv4Prefix.getValue().indexOf('/')).split("\\.");
for (int d = 0; d < 4; d++) {
retval[d] = (byte) (Short.parseShort(address[d]) & 0xff);
}
return retval;
}
/**
* Extracts {@link Ipv4Prefix} prefix
*/
default byte extractPrefix(Ipv4Prefix data) {
checkNotNull(data, "Cannot extract from null");
return Byte.valueOf(data.getValue().substring(data.getValue().indexOf('/') + 1));
}
/**
* Parse byte array returned by VPP representing an Ipv4 address. Expects array in big endian
*
* @return Ipv4AddressNoZone containing string representation of IPv4 address constructed from submitted bytes. No
* change in order.
*/
@Nonnull
default Ipv4AddressNoZone arrayToIpv4AddressNoZone(@Nonnull byte[] ip) {
// VPP sends ipv4 in a 16 byte array
if (ip.length == 16) {
ip = Arrays.copyOfRange(ip, 0, 4);
}
return new Ipv4AddressNoZone(IetfInetUtil.INSTANCE.ipv4AddressFor(ip));
}
/**
* Transform Ipv4 address to a byte array acceptable by VPP. VPP expects incoming byte array to be in the same order
* as the address.
*
* @return byte array with address bytes
*/
default byte[] ipv4AddressNoZoneToArray(final Ipv4AddressNoZone ipv4Addr) {
return ipv4AddressNoZoneToArray(ipv4Addr.getValue());
}
default byte[] ipv4AddressNoZoneToArray(final String ipv4Addr) {
byte[] retval = new byte[4];
String[] dots = ipv4Addr.split("\\.");
for (int d = 0; d < 4; d++) {
retval[d] = (byte) (Short.parseShort(dots[d]) & 0xff);
}
return retval;
}
default Ipv4Prefix toIpv4Prefix(final byte[] address, final int prefix) {
return IetfInetUtil.INSTANCE.ipv4PrefixFor(address, prefix);
}
}
|
