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
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
|
/*
* Copyright (c) 2017 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.nat.read;
import static com.google.common.base.Preconditions.checkNotNull;
import com.google.common.collect.Maps;
import com.google.common.primitives.UnsignedBytes;
import com.google.common.primitives.UnsignedInts;
import io.fd.hc2vpp.common.translate.util.Ipv6Translator;
import io.fd.hc2vpp.common.translate.util.JvppReplyConsumer;
import io.fd.honeycomb.translate.read.ReadContext;
import io.fd.honeycomb.translate.read.ReadFailedException;
import io.fd.honeycomb.translate.spi.read.ListReaderCustomizer;
import io.fd.honeycomb.translate.util.read.cache.DumpCacheManager;
import io.fd.honeycomb.translate.util.read.cache.EntityDumpExecutor;
import io.fd.honeycomb.translate.util.read.cache.StaticCacheKeyFactory;
import io.fd.vpp.jvpp.nat.dto.Nat64PrefixDetails;
import io.fd.vpp.jvpp.nat.dto.Nat64PrefixDetailsReplyDump;
import io.fd.vpp.jvpp.nat.dto.Nat64PrefixDump;
import io.fd.vpp.jvpp.nat.future.FutureJVppNatFacade;
import java.util.Collections;
import java.util.List;
import java.util.Map;
import javax.annotation.Nonnull;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.nat.rev150908.nat.parameters.Nat64Prefixes;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.nat.rev150908.nat.parameters.Nat64PrefixesBuilder;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.nat.rev150908.nat.parameters.Nat64PrefixesKey;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.nat.rev150908.nat.state.nat.instances.NatInstance;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.nat.rev150908.nat.state.nat.instances.NatInstanceKey;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.nat.rev150908.nat.state.nat.instances.nat.instance.NatCurrentConfigBuilder;
import org.opendaylight.yangtools.concepts.Builder;
import org.opendaylight.yangtools.yang.binding.DataObject;
import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
final class Nat64PrefixesCustomizer
implements ListReaderCustomizer<Nat64Prefixes, Nat64PrefixesKey, Nat64PrefixesBuilder>,
JvppReplyConsumer, Ipv6Translator {
private static final Logger LOG = LoggerFactory.getLogger(Nat64PrefixesCustomizer.class);
private final DumpCacheManager<Map<Long, Nat64PrefixDetails>, Void> dumpManager;
Nat64PrefixesCustomizer(@Nonnull final FutureJVppNatFacade jvppNat) {
this.dumpManager = new DumpCacheManager.DumpCacheManagerBuilder<Map<Long, Nat64PrefixDetails>, Void>()
.withExecutor(new Nat64PrefixesExecutor(jvppNat))
.withCacheKeyFactory(
new StaticCacheKeyFactory(Nat64PrefixesCustomizer.class.getName() + "_dump", Map.class))
.build();
}
@Nonnull
@Override
public List<Nat64PrefixesKey> getAllIds(@Nonnull final InstanceIdentifier<Nat64Prefixes> id,
@Nonnull final ReadContext context)
throws ReadFailedException {
final NatInstanceKey natKey = id.firstKeyOf(NatInstance.class);
LOG.trace("Listing IDs for all nat64 prefixes within nat-instance(vrf): {}", natKey);
final Map<Long, Nat64PrefixDetails> prefixesByVrfId =
dumpManager.getDump(id, context.getModificationCache()).get();
final Nat64PrefixDetails nat64PrefixDetails = prefixesByVrfId.get(natKey.getId());
if (nat64PrefixDetails != null) {
// VPP supports only single nat64-prefix per VRF/nat-instance (we map nat-instances to VRFs)
// To ensure that (and for simplicity), we set nat64-prefix-id to 0.
return Collections.singletonList(new Nat64PrefixesKey(0L));
} else {
return Collections.emptyList();
}
}
@Override
public void merge(@Nonnull final Builder<? extends DataObject> builder,
@Nonnull final List<Nat64Prefixes> readData) {
((NatCurrentConfigBuilder) builder).setNat64Prefixes(readData);
}
@Nonnull
@Override
public Nat64PrefixesBuilder getBuilder(@Nonnull final InstanceIdentifier<Nat64Prefixes> id) {
return new Nat64PrefixesBuilder();
}
@Override
public void readCurrentAttributes(@Nonnull final InstanceIdentifier<Nat64Prefixes> id,
@Nonnull final Nat64PrefixesBuilder builder, @Nonnull final ReadContext context)
throws ReadFailedException {
LOG.trace("Reading nat64-prefixes: {}", id);
final long prefixId = id.firstKeyOf(Nat64Prefixes.class).getNat64PrefixId().longValue();
if (prefixId != 0L) {
// Ignore non zero IDs (VPP supports single nat64 prefix per VRF)
return;
}
final Map<Long, Nat64PrefixDetails> prefixesByVrfId =
dumpManager.getDump(id, context.getModificationCache()).get();
final Nat64PrefixDetails prefixDetails = prefixesByVrfId.get(id.firstKeyOf(NatInstance.class).getId());
if (prefixDetails != null) {
builder.setNat64PrefixId(prefixId);
builder.setNat64Prefix(
arrayToIpv6Prefix(prefixDetails.prefix, UnsignedBytes.toInt(prefixDetails.prefixLen)));
}
}
private final class Nat64PrefixesExecutor implements EntityDumpExecutor<Map<Long, Nat64PrefixDetails>, Void> {
private final FutureJVppNatFacade jvppNat;
private Nat64PrefixesExecutor(@Nonnull final FutureJVppNatFacade jvppNat) {
this.jvppNat = checkNotNull(jvppNat, "jvppNat should not be null");
}
@Nonnull
@Override
public Map<Long, Nat64PrefixDetails> executeDump(final InstanceIdentifier<?> id, final Void params)
throws ReadFailedException {
final Nat64PrefixDetailsReplyDump dump =
getReplyForRead(jvppNat.nat64PrefixDump(new Nat64PrefixDump()).toCompletableFuture(), id);
// To improve read performance (if multiple nat instances are defined),
// we store map instead of list of prefixes.
// Current nat64-prefixes mapping relies on the fact, that VPP supports single prefix for VRF.
// To validate that we rely on Guava's Maps.uniqueIndex which trows IllegalStateException
// if duplicate key is found.
return Maps.uniqueIndex(dump.nat64PrefixDetails, prefixDetails -> UnsignedInts.toLong(prefixDetails.vrfId));
}
}
}
|
