Introduced HostMoveTracker to suspend hosts that moves too frequently
Change-Id: I3037c626657790ce6817feddba7dbbfac203b188
diff --git a/core/net/src/main/java/org/onosproject/net/host/impl/HostMoveTracker.java b/core/net/src/main/java/org/onosproject/net/host/impl/HostMoveTracker.java
new file mode 100644
index 0000000..05a8f77
--- /dev/null
+++ b/core/net/src/main/java/org/onosproject/net/host/impl/HostMoveTracker.java
@@ -0,0 +1,115 @@
+/*
+ * Copyright 2015-present Open Networking Foundation
+ *
+ * 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.host.impl;
+
+import org.onosproject.net.HostLocation;
+
+import java.util.Objects;
+import java.util.Set;
+
+import static com.google.common.base.MoreObjects.toStringHelper;
+
+/**
+ * Used for tracking of the host move.
+ */
+public class HostMoveTracker {
+ private Integer counter;
+ private Long timeStamp;
+ private Set<HostLocation> locations;
+
+ /**
+ * Initialize the instance of HostMoveTracker.
+ *
+ * @param locations List of locations where host is present
+ */
+ public HostMoveTracker(Set<HostLocation> locations) {
+ counter = 1;
+ timeStamp = System.currentTimeMillis();
+ this.locations = locations;
+ }
+
+ /**
+ * Updates locations in HostMoveTracker.
+ *
+ * @param locations List of locations where host is present
+ */
+ public void updateHostMoveTracker(Set<HostLocation> locations) {
+ counter += 1;
+ timeStamp = System.currentTimeMillis();
+ this.locations = locations;
+ }
+
+ /**
+ * Reset hostmove count,timestamp and updated locations.
+ *
+ * @param locations List of locations where host is present
+ */
+ public void resetHostMoveTracker(Set<HostLocation> locations) {
+ counter = 0;
+ timeStamp = System.currentTimeMillis();
+ this.locations = locations;
+ }
+
+ /**
+ * Reset hostmove count and timestamp.
+ */
+ public void resetHostMoveTracker() {
+ counter = 0;
+ timeStamp = System.currentTimeMillis();
+ }
+
+ public Long getTimeStamp() {
+ return timeStamp;
+ }
+
+ public Integer getCounter() {
+ return counter;
+ }
+
+
+ public Set<HostLocation> getLocations() {
+ return locations;
+ }
+
+ @Override
+ public boolean equals(Object o) {
+ if (this == o) {
+ return true;
+ }
+ if (o == null || getClass() != o.getClass()) {
+ return false;
+ }
+ HostMoveTracker that = (HostMoveTracker) o;
+ return Objects.equals(locations, that.locations) &&
+ Objects.equals(counter, that.counter);
+ }
+
+ @Override
+ public int hashCode() {
+
+ return Objects.hash(locations, counter);
+ }
+
+ @Override
+ public String toString() {
+ return toStringHelper(this)
+ .add("counter", getCounter())
+ .add("timeStamp", getTimeStamp())
+ .add("locations", getLocations())
+ .toString();
+ }
+}