the real return of the flowentry

Change-Id: I9ec244710345dbae193613ab95f473a888d7d771

+package org.onlab.onos.net.flow;
+
+import static com.google.common.base.MoreObjects.toStringHelper;
+import static org.slf4j.LoggerFactory.getLogger;
+
+import org.onlab.onos.net.DeviceId;
+import org.slf4j.Logger;
+
+public class DefaultFlowEntry extends DefaultFlowRule implements FlowEntry {
+
+    private final Logger log = getLogger(getClass());
+
+    private long life;
+    private long packets;
+    private long bytes;
+    private FlowEntryState state;
+
+    private long lastSeen = -1;
+
+
+    public DefaultFlowEntry(DeviceId deviceId, TrafficSelector selector,
+            TrafficTreatment treatment, int priority, FlowEntryState state,
+            long life, long packets, long bytes, long flowId,
+            int timeout) {
+        super(deviceId, selector, treatment, priority, flowId, timeout);
+        this.state = state;
+        this.life = life;
+        this.packets = packets;
+        this.bytes = bytes;
+        this.lastSeen = System.currentTimeMillis();
+    }
+
+    public DefaultFlowEntry(FlowRule rule, FlowEntryState state,
+            long life, long packets, long bytes) {
+        super(rule);
+        this.state = state;
+        this.life = life;
+        this.packets = packets;
+        this.bytes = bytes;
+        this.lastSeen = System.currentTimeMillis();
+    }
+
+    public DefaultFlowEntry(FlowRule rule) {
+        super(rule);
+        this.state = FlowEntryState.PENDING_ADD;
+        this.life = 0;
+        this.packets = 0;
+        this.bytes = 0;
+        this.lastSeen = System.currentTimeMillis();
+    }
+
+    @Override
+    public long life() {
+        return life;
+    }
+
+    @Override
+    public long packets() {
+        return packets;
+    }
+
+    @Override
+    public long bytes() {
+        return bytes;
+    }
+
+    @Override
+    public FlowEntryState state() {
+        return this.state;
+    }
+
+    @Override
+    public long lastSeen() {
+        return lastSeen;
+    }
+
+    @Override
+    public void setLastSeen() {
+        this.lastSeen = System.currentTimeMillis();
+    }
+
+    @Override
+    public void setState(FlowEntryState newState) {
+        this.state = newState;
+    }
+
+    @Override
+    public void setLife(long life) {
+        this.life = life;
+    }
+
+    @Override
+    public void setPackets(long packets) {
+        this.packets = packets;
+    }
+
+    @Override
+    public void setBytes(long bytes) {
+        this.bytes = bytes;
+    }
+
+    @Override
+    public String toString() {
+        return toStringHelper(this)
+                .add("rule", super.toString())
+                .add("state", state)
+                .toString();
+    }
+
+
+}

+package org.onlab.onos.net.flow;
+
+
+/**
+ * Represents a generalized match & action pair to be applied to
+ * an infrastucture device.
+ */
+public interface FlowEntry extends FlowRule {
+
+
+    public enum FlowEntryState {
+
+        /**
+         * Indicates that this rule has been submitted for addition.
+         * Not necessarily in  the flow table.
+         */
+        PENDING_ADD,
+
+        /**
+         * Rule has been added which means it is in the flow table.
+         */
+        ADDED,
+
+        /**
+         * Flow has been marked for removal, might still be in flow table.
+         */
+        PENDING_REMOVE,
+
+        /**
+         * Flow has been removed from flow table and can be purged.
+         */
+        REMOVED
+    }
+
+    /**
+     * Returns the flow entry state.
+     *
+     * @return flow entry state
+     */
+    FlowEntryState state();
+
+    /**
+     * Returns the number of milliseconds this flow rule has been applied.
+     *
+     * @return number of millis
+     */
+    long life();
+
+    /**
+     * Returns the number of packets this flow rule has matched.
+     *
+     * @return number of packets
+     */
+    long packets();
+
+    /**
+     * Returns the number of bytes this flow rule has matched.
+     *
+     * @return number of bytes
+     */
+    long bytes();
+
+    /**
+     * When this flow entry was last deemed active.
+     * @return epoch time of last activity
+     */
+    long lastSeen();
+
+    /**
+     * Sets the last active epoch time.
+     */
+    void setLastSeen();
+
+    /**
+     * Sets the new state for this entry.
+     * @param newState new flow entry state.
+     */
+    void setState(FlowEntryState newState);
+
+    /**
+     * Sets how long this entry has been entered in the system.
+     * @param life epoch time
+     */
+    void setLife(long life);
+
+    /**
+     * Number of packets seen by this entry.
+     * @param packets a long value
+     */
+    void setPackets(long packets);
+
+    /**
+     * Number of bytes seen by this rule.
+     * @param bytes a long value
+     */
+    void setBytes(long bytes);
+
+}