2 * Copyright (c) 2016 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
8 package org.opendaylight.groupbasedpolicy.renderer.ofoverlay.statistics;
10 import static com.google.common.base.Preconditions.checkNotNull;
12 import java.util.Collections;
13 import java.util.HashMap;
14 import java.util.List;
16 import java.util.Map.Entry;
18 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
19 import org.opendaylight.controller.md.sal.binding.api.DataObjectModification;
20 import org.opendaylight.controller.md.sal.binding.api.DataTreeIdentifier;
21 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
22 import org.opendaylight.groupbasedpolicy.util.DataTreeChangeHandler;
23 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.resolved.policy.rev150828.ResolvedPolicies;
24 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.resolved.policy.rev150828.has.classifiers.Classifier;
25 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.resolved.policy.rev150828.has.resolved.rules.ResolvedRule;
26 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.resolved.policy.rev150828.resolved.policies.ResolvedPolicy;
27 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.resolved.policy.rev150828.resolved.policies.resolved.policy.PolicyRuleGroupWithEndpointConstraints;
28 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.resolved.policy.rev150828.resolved.policies.resolved.policy.policy.rule.group.with.endpoint.constraints.PolicyRuleGroup;
29 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
30 import org.slf4j.Logger;
31 import org.slf4j.LoggerFactory;
33 import com.google.common.collect.MapDifference;
34 import com.google.common.collect.Maps;
36 public class ResolvedPolicyClassifierListener extends DataTreeChangeHandler<ResolvedPolicy> {
38 private static final Logger LOG = LoggerFactory.getLogger(ResolvedPolicyClassifierListener.class);
39 private final OFStatisticsManager ofStatsManager;
41 public ResolvedPolicyClassifierListener(DataBroker dataProvider, OFStatisticsManager ofStatsManager) {
43 this.ofStatsManager = checkNotNull(ofStatsManager);
44 registerDataTreeChangeListener(new DataTreeIdentifier<>(LogicalDatastoreType.OPERATIONAL,
45 InstanceIdentifier.builder(ResolvedPolicies.class).child(ResolvedPolicy.class).build()));
49 protected void onWrite(DataObjectModification<ResolvedPolicy> rootNode,
50 InstanceIdentifier<ResolvedPolicy> rootIdentifier) {
51 ResolvedPolicy resolvedPolicy = rootNode.getDataAfter();
52 Map<InstanceIdentifier<Classifier>, Classifier> classifierByIid =
53 resolveClassifiers(resolvedPolicy, rootIdentifier);
54 for (Entry<InstanceIdentifier<Classifier>, Classifier> classifierEntry : classifierByIid.entrySet()) {
55 LOG.trace("New classifier created: {}\n{}", classifierEntry.getKey(),
56 classifierEntry.getValue());
57 ofStatsManager.pullStatsForClassifier(classifierEntry.getKey(),
58 classifierEntry.getValue());
63 protected void onDelete(DataObjectModification<ResolvedPolicy> rootNode,
64 InstanceIdentifier<ResolvedPolicy> rootIdentifier) {
65 LOG.debug("Delete is not supported yet.");
69 protected void onSubtreeModified(DataObjectModification<ResolvedPolicy> rootNode,
70 InstanceIdentifier<ResolvedPolicy> rootIdentifier) {
71 ResolvedPolicy resolvedPolicyAfter = rootNode.getDataAfter();
72 ResolvedPolicy resolvedPolicyBefore = rootNode.getDataBefore();
73 Map<InstanceIdentifier<Classifier>, Classifier> classifierByIidAfter =
74 resolveClassifiers(resolvedPolicyAfter, rootIdentifier);
75 Map<InstanceIdentifier<Classifier>, Classifier> classifierByIidBefore =
76 resolveClassifiers(resolvedPolicyBefore, rootIdentifier);
77 MapDifference<InstanceIdentifier<Classifier>, Classifier> difference =
78 Maps.difference(classifierByIidBefore, classifierByIidAfter);
79 Map<InstanceIdentifier<Classifier>, Classifier> createdClassifierByIid = difference.entriesOnlyOnRight();
80 for (Entry<InstanceIdentifier<Classifier>, Classifier> createdClassfierEntry : createdClassifierByIid
82 LOG.trace("New classifier created: {}\n{}", createdClassfierEntry.getKey(),
83 createdClassfierEntry.getValue());
84 ofStatsManager.pullStatsForClassifier(createdClassfierEntry.getKey(), createdClassfierEntry.getValue());
86 // TODO missing impl for case when classifier is changed or removed
89 // TODO move to some util class
90 public static Map<InstanceIdentifier<Classifier>, Classifier> resolveClassifiers(ResolvedPolicy resolvedPolicy,
91 InstanceIdentifier<ResolvedPolicy> resolvedPolicyIid) {
92 List<PolicyRuleGroupWithEndpointConstraints> policyRgWithEcs =
93 resolvedPolicy.getPolicyRuleGroupWithEndpointConstraints();
94 if (policyRgWithEcs == null) {
95 return Collections.emptyMap();
97 Map<InstanceIdentifier<Classifier>, Classifier> result = new HashMap<>();
98 for (PolicyRuleGroupWithEndpointConstraints policyRgWithEc : policyRgWithEcs) {
99 List<PolicyRuleGroup> policyRuleGroups = policyRgWithEc.getPolicyRuleGroup();
100 if (policyRuleGroups == null) {
103 for (PolicyRuleGroup policyRuleGroup : policyRuleGroups) {
104 List<ResolvedRule> resolvedRules = policyRuleGroup.getResolvedRule();
105 if (resolvedRules == null) {
108 for (ResolvedRule resolvedRule : resolvedRules) {
109 List<Classifier> classifiers = resolvedRule.getClassifier();
110 if (classifiers == null) {
113 for (Classifier classifier : classifiers) {
114 InstanceIdentifier<Classifier> classifierIid = resolvedPolicyIid.builder()
115 .child(PolicyRuleGroupWithEndpointConstraints.class)
116 .child(PolicyRuleGroup.class, policyRuleGroup.getKey())
117 .child(ResolvedRule.class, resolvedRule.getKey())
118 .child(Classifier.class, classifier.getKey())
120 result.put(classifierIid, classifier);