1 files changed, 109 insertions, 0 deletions
diff --git a/framework/src/onos/core/net/src/main/java/org/onosproject/net/flowobjective/impl/composition/ForwardTable.java b/framework/src/onos/core/net/src/main/java/org/onosproject/net/flowobjective/impl/composition/ForwardTable.java
new file mode 100644
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--- /dev/null
+++ b/framework/src/onos/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());
+    }
+}