Adding experimental Flow Objective composition
Change-Id: I35e4414845ad5034145157ab83f933e40f75a1d9
diff --git a/core/net/src/main/java/org/onosproject/net/flowobjective/impl/composition/ForwardTable.java b/core/net/src/main/java/org/onosproject/net/flowobjective/impl/composition/ForwardTable.java
new file mode 100644
index 0000000..1384bbe
--- /dev/null
+++ b/core/net/src/main/java/org/onosproject/net/flowobjective/impl/composition/ForwardTable.java
@@ -0,0 +1,109 @@
+/*
+ * Copyright 2015 Open Networking Laboratory
+ *
+ * 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 org.onosproject.net.flowobjective.impl.composition;
+
+import org.onosproject.net.flowobjective.DefaultForwardingObjective;
+import org.onosproject.net.flowobjective.ForwardingObjective;
+
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.Objects;
+
+/**
+ * Provides a table to store Forward.
+ */
+public class ForwardTable {
+
+ protected Map<Integer, ForwardingObjective> forwardMap;
+ protected Map<Integer, List<ForwardingObjective>> generatedParentForwardingObjectiveMap;
+
+ public ForwardTable() {
+ this.forwardMap = new HashMap<>();
+ this.generatedParentForwardingObjectiveMap = new HashMap<>();
+ }
+
+ public ForwardUpdateTable updateForward(ForwardingObjective forwardingObjective) {
+ ForwardUpdateTable updates = new ForwardUpdateTable();
+ switch (forwardingObjective.op()) {
+ case ADD:
+ this.forwardMap.put(forwardingObjectiveHash(forwardingObjective), forwardingObjective);
+ this.generatedParentForwardingObjectiveMap
+ .put(forwardingObjectiveHash(forwardingObjective), new ArrayList<>());
+ updates.addObjectives.add(forwardingObjective);
+ break;
+ case REMOVE:
+ if (this.forwardMap.remove(forwardingObjectiveHash(forwardingObjective)) != null) {
+ updates.removeObjectives.add(forwardingObjective);
+ }
+ break;
+ default:
+ break;
+ }
+ return updates;
+ }
+
+ public ForwardUpdateTable updateForward(List<ForwardingObjective> forwardingObjectives) {
+ ForwardUpdateTable updates = new ForwardUpdateTable();
+ for (ForwardingObjective forwardingObjective : forwardingObjectives) {
+ updates.addUpdateTable(this.updateForward(forwardingObjective));
+ }
+ return updates;
+ }
+
+ public void addGeneratedParentForwardingObjective(ForwardingObjective child, ForwardingObjective parent) {
+ this.generatedParentForwardingObjectiveMap.get(forwardingObjectiveHash(child)).add(parent);
+ }
+
+ public void deleteGeneratedParentForwardingObjective(List<ForwardingObjective> children) {
+ for (ForwardingObjective fo : children) {
+ this.generatedParentForwardingObjectiveMap.remove(forwardingObjectiveHash(fo));
+ }
+ }
+
+ private List<ForwardingObjective> getGeneratedParentForwardingObjective(ForwardingObjective child) {
+ return this.generatedParentForwardingObjectiveMap.get(forwardingObjectiveHash(child));
+ }
+
+ public List<ForwardingObjective> getGeneratedParentForwardingObjectiveForRemove(ForwardingObjective child) {
+ List<ForwardingObjective> fos = this.generatedParentForwardingObjectiveMap.get(forwardingObjectiveHash(child));
+ List<ForwardingObjective> removeFos = new ArrayList<>();
+ for (ForwardingObjective fo : fos) {
+ removeFos.add(DefaultForwardingObjective.builder()
+ .fromApp(fo.appId())
+ .makePermanent()
+ .withFlag(fo.flag())
+ .withPriority(fo.priority())
+ .withSelector(fo.selector())
+ .withTreatment(fo.treatment())
+ .remove());
+ }
+ return removeFos;
+ }
+
+ public Collection<ForwardingObjective> getForwardingObjectives() {
+ return this.forwardMap.values();
+ }
+
+ public static int forwardingObjectiveHash(ForwardingObjective forwardingObjective) {
+ return Objects.hash(forwardingObjective.selector(), forwardingObjective.flag(),
+ forwardingObjective.permanent(), forwardingObjective.timeout(),
+ forwardingObjective.appId(), forwardingObjective.priority(),
+ forwardingObjective.nextId(), forwardingObjective.treatment());
+ }
+}