2 * Copyright (c) 2015 Cisco Systems, Inc. and others. All rights reserved.
4 * This program and the accompanying materials are made available under the
5 * terms of the Eclipse Public License v1.0 which accompanies this distribution,
6 * and is available at http://www.eclipse.org/legal/epl-v10.html
9 package org.opendaylight.protocol.pcep.pcc.mock;
11 import com.google.common.base.Optional;
12 import com.google.common.base.Preconditions;
13 import java.math.BigInteger;
14 import javax.annotation.Nonnull;
15 import org.opendaylight.protocol.pcep.pcc.mock.api.PCCSession;
16 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.controller.pcep.sync.optimizations.rev150714.Stateful1;
17 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.controller.pcep.sync.optimizations.rev150714.Tlvs3;
18 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.controller.pcep.sync.optimizations.rev150714.lsp.db.version.tlv.LspDbVersion;
19 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev131222.Tlvs1;
20 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.open.object.open.Tlvs;
22 final class PCCSyncOptimization {
23 private final boolean dbVersionMatch;
24 private final boolean isSyncAvoidanceEnabled;
25 private final boolean isDeltaSyncEnabled;
26 private final boolean isTriggeredInitialSynEnable;
27 private final boolean isTriggeredReSyncEnable;
28 private final LspDbVersion localLspDbVersion;
29 private final LspDbVersion remoteLspDbVersion;
30 private BigInteger lspDBVersion = BigInteger.ONE;
31 private Boolean resynchronizing = Boolean.FALSE;
33 public PCCSyncOptimization(@Nonnull final PCCSession session) {
34 Preconditions.checkNotNull(session);
35 final Tlvs remote = session.getRemoteTlvs();
36 final Tlvs local = session.localSessionCharacteristics();
37 this.localLspDbVersion = getLspDbVersion(local);
38 this.remoteLspDbVersion = getLspDbVersion(remote);
39 this.dbVersionMatch = compareLspDbVersion(localLspDbVersion, remoteLspDbVersion);
40 this.isSyncAvoidanceEnabled = isSyncAvoidance(local) && isSyncAvoidance(remote);
41 this.isDeltaSyncEnabled = isDeltaSync(local) && isDeltaSync(remote);
42 this.isTriggeredInitialSynEnable = isTriggeredInitialSync(local) && isTriggeredInitialSync(remote) &&
43 (this.isDeltaSyncEnabled || this.isSyncAvoidanceEnabled);
44 this.isTriggeredReSyncEnable = isTriggeredReSync(local) && isTriggeredReSync(remote);
47 public boolean doesLspDbMatch() {
48 return dbVersionMatch;
51 public boolean isSyncAvoidanceEnabled() {
52 return isSyncAvoidanceEnabled;
55 public boolean isDeltaSyncEnabled() {
56 return isDeltaSyncEnabled;
59 public boolean isTriggeredInitSyncEnabled() {
60 return isTriggeredInitialSynEnable;
63 public boolean isTriggeredReSyncEnabled() {
64 return isTriggeredReSyncEnable;
67 public BigInteger getLocalLspDbVersionValue() {
68 if (this.localLspDbVersion == null) {
71 return this.localLspDbVersion.getLspDbVersionValue();
74 public BigInteger getRemoteLspDbVersionValue() {
75 if (this.remoteLspDbVersion == null) {
76 return BigInteger.ONE;
78 return this.remoteLspDbVersion.getLspDbVersionValue();
81 private static LspDbVersion getLspDbVersion(final Tlvs openTlvs) {
82 if (openTlvs != null) {
83 final Tlvs3 tlvs3 = openTlvs.getAugmentation(Tlvs3.class);
84 if (tlvs3 != null && tlvs3.getLspDbVersion() != null
85 && tlvs3.getLspDbVersion().getLspDbVersionValue() != null) {
86 return tlvs3.getLspDbVersion();
92 private static boolean compareLspDbVersion(final LspDbVersion local, final LspDbVersion remote) {
93 if (local != null && remote != null) {
94 return local.equals(remote);
99 private static Stateful1 getStateful1(final Tlvs openTlvs) {
100 if (openTlvs != null) {
101 final Tlvs1 tlvs1 = openTlvs.getAugmentation(Tlvs1.class);
102 if (tlvs1 != null && tlvs1.getStateful() != null) {
103 return tlvs1.getStateful().getAugmentation(Stateful1.class);
109 private static boolean isSyncAvoidance(final Tlvs openTlvs) {
110 final Stateful1 stateful1 = getStateful1(openTlvs);
111 if (stateful1 != null && stateful1.isIncludeDbVersion() != null) {
112 return stateful1.isIncludeDbVersion();
117 private static boolean isDeltaSync(final Tlvs openTlvs) {
118 final Stateful1 stateful1 = getStateful1(openTlvs);
119 if (stateful1 != null && stateful1.isDeltaLspSyncCapability() != null) {
120 return stateful1.isDeltaLspSyncCapability();
125 private static boolean isTriggeredInitialSync(final Tlvs openTlvs) {
126 final Stateful1 stateful1 = getStateful1(openTlvs);
127 if (stateful1 != null && stateful1.isTriggeredInitialSync() != null) {
128 return stateful1.isTriggeredInitialSync();
133 private static boolean isTriggeredReSync(final Tlvs openTlvs) {
134 final Stateful1 stateful1 = getStateful1(openTlvs);
135 if (stateful1 != null && stateful1.isTriggeredResync() != null) {
136 return stateful1.isTriggeredResync();
141 public Optional<BigInteger> incrementLspDBVersion() {
142 if (!isSyncAvoidanceEnabled()) {
143 return Optional.absent();
144 } else if (isSyncNeedIt() && getLocalLspDbVersionValue() != null && !this.resynchronizing) {
145 this.lspDBVersion = getLocalLspDbVersionValue();
146 return Optional.of(this.lspDBVersion);
147 } else if (this.resynchronizing) {
148 return Optional.of(this.lspDBVersion);
151 this.lspDBVersion = this.lspDBVersion.add(BigInteger.ONE);
152 return Optional.of(this.lspDBVersion);
155 public boolean isSyncNeedIt() {
156 if (doesLspDbMatch() && !this.resynchronizing) {
162 public void setResynchronizingState(final Boolean resync) {
163 this.resynchronizing = resync;