Deprecate joda-time

- ref:
  http://blog.joda.org/2014/11/converting-from-joda-time-to-javatime.html

Change-Id: I1115e8053f601e78cb933ccbfa664ff8787d2da1
diff --git a/core/api/pom.xml b/core/api/pom.xml
index f4d65ca..290c345 100644
--- a/core/api/pom.xml
+++ b/core/api/pom.xml
@@ -34,6 +34,7 @@
         <dependency>
             <groupId>joda-time</groupId>
             <artifactId>joda-time</artifactId>
+            <version>2.9.3</version>
         </dependency>
         <dependency>
             <groupId>commons-configuration</groupId>
diff --git a/core/api/src/main/java/org/onosproject/cluster/ClusterService.java b/core/api/src/main/java/org/onosproject/cluster/ClusterService.java
index e4cf7ec..1a75e5f 100644
--- a/core/api/src/main/java/org/onosproject/cluster/ClusterService.java
+++ b/core/api/src/main/java/org/onosproject/cluster/ClusterService.java
@@ -15,6 +15,8 @@
  */
 package org.onosproject.cluster;
 
+import java.time.Instant;
+import java.util.Optional;
 import java.util.Set;
 
 import org.joda.time.DateTime;
@@ -72,6 +74,27 @@
      * @param nodeId controller node identifier
      * @return system time when the availability state was last updated.
      */
-    DateTime getLastUpdated(NodeId nodeId);
+    default Instant getLastUpdatedInstant(NodeId nodeId) {
+        return Optional.ofNullable(getLastUpdated(nodeId))
+                    .map(DateTime::getMillis)
+                    .map(Instant::ofEpochMilli)
+                    .orElse(null);
+    }
+
+    /**
+     * Returns the system time when the availability state was last updated.
+     *
+     * @param nodeId controller node identifier
+     * @return system time when the availability state was last updated.
+     *
+     * @deprecated in 1.12.0
+     */
+    @Deprecated
+    default DateTime getLastUpdated(NodeId nodeId) {
+        return Optional.ofNullable(getLastUpdatedInstant(nodeId))
+                .map(Instant::toEpochMilli)
+                .map(DateTime::new)
+                .orElse(null);
+    }
 
 }
diff --git a/core/api/src/main/java/org/onosproject/cluster/ClusterStore.java b/core/api/src/main/java/org/onosproject/cluster/ClusterStore.java
index 7154c78..dfe0b23 100644
--- a/core/api/src/main/java/org/onosproject/cluster/ClusterStore.java
+++ b/core/api/src/main/java/org/onosproject/cluster/ClusterStore.java
@@ -20,6 +20,8 @@
 import org.onosproject.core.Version;
 import org.onosproject.store.Store;
 
+import java.time.Instant;
+import java.util.Optional;
 import java.util.Set;
 
 /**
@@ -78,7 +80,28 @@
      * @param nodeId controller node identifier
      * @return system time when the availability state was last updated.
      */
-    DateTime getLastUpdated(NodeId nodeId);
+    default Instant getLastUpdatedInstant(NodeId nodeId) {
+        return Optional.ofNullable(getLastUpdated(nodeId))
+                    .map(DateTime::getMillis)
+                    .map(Instant::ofEpochMilli)
+                    .orElse(null);
+    }
+
+    /**
+     * Returns the system when the availability state was last updated.
+     *
+     * @param nodeId controller node identifier
+     * @return system time when the availability state was last updated.
+     *
+     * @deprecated in 1.12.0
+     */
+    @Deprecated
+    default DateTime getLastUpdated(NodeId nodeId) {
+        return Optional.ofNullable(getLastUpdatedInstant(nodeId))
+                .map(Instant::toEpochMilli)
+                .map(DateTime::new)
+                .orElse(null);
+    }
 
     /**
      * Adds a new controller node to the cluster.
diff --git a/core/api/src/main/java/org/onosproject/event/AbstractEvent.java b/core/api/src/main/java/org/onosproject/event/AbstractEvent.java
index 2d810a3..754ecbb 100644
--- a/core/api/src/main/java/org/onosproject/event/AbstractEvent.java
+++ b/core/api/src/main/java/org/onosproject/event/AbstractEvent.java
@@ -15,7 +15,7 @@
  */
 package org.onosproject.event;
 
-import org.joda.time.LocalDateTime;
+import org.onlab.util.Tools;
 
 import static com.google.common.base.MoreObjects.toStringHelper;
 
@@ -70,7 +70,7 @@
     @Override
     public String toString() {
         return toStringHelper(this)
-                .add("time", new LocalDateTime(time))
+                .add("time", Tools.defaultOffsetDataTime(time))
                 .add("type", type())
                 .add("subject", subject())
                 .toString();
diff --git a/core/api/src/main/java/org/onosproject/mastership/MastershipEvent.java b/core/api/src/main/java/org/onosproject/mastership/MastershipEvent.java
index 4242e61..db5ba74 100644
--- a/core/api/src/main/java/org/onosproject/mastership/MastershipEvent.java
+++ b/core/api/src/main/java/org/onosproject/mastership/MastershipEvent.java
@@ -15,7 +15,7 @@
  */
 package org.onosproject.mastership;
 
-import org.joda.time.LocalDateTime;
+import org.onlab.util.Tools;
 import org.onosproject.cluster.RoleInfo;
 import org.onosproject.event.AbstractEvent;
 import org.onosproject.net.DeviceId;
@@ -114,7 +114,7 @@
     @Override
     public String toString() {
         return MoreObjects.toStringHelper(getClass())
-                .add("time", new LocalDateTime(time()))
+                .add("time", Tools.defaultOffsetDataTime(time()))
                 .add("type", type())
                 .add("subject", subject())
                 .add("roleInfo", roleInfo)
diff --git a/core/api/src/main/java/org/onosproject/net/config/NetworkConfigEvent.java b/core/api/src/main/java/org/onosproject/net/config/NetworkConfigEvent.java
index e94e0d9..ee1f03c 100644
--- a/core/api/src/main/java/org/onosproject/net/config/NetworkConfigEvent.java
+++ b/core/api/src/main/java/org/onosproject/net/config/NetworkConfigEvent.java
@@ -15,7 +15,7 @@
  */
 package org.onosproject.net.config;
 
-import org.joda.time.LocalDateTime;
+import org.onlab.util.Tools;
 import org.onosproject.event.AbstractEvent;
 
 import java.util.Optional;
@@ -141,7 +141,7 @@
     @Override
     public String toString() {
         return toStringHelper(this)
-                .add("time", new LocalDateTime(time()))
+                .add("time", Tools.defaultOffsetDataTime(time()))
                 .add("type", type())
                 .add("config", config())
                 .add("prevConfig", prevConfig())
diff --git a/core/api/src/main/java/org/onosproject/net/device/DeviceEvent.java b/core/api/src/main/java/org/onosproject/net/device/DeviceEvent.java
index 7ebb041..16e9d25 100644
--- a/core/api/src/main/java/org/onosproject/net/device/DeviceEvent.java
+++ b/core/api/src/main/java/org/onosproject/net/device/DeviceEvent.java
@@ -15,7 +15,7 @@
  */
 package org.onosproject.net.device;
 
-import org.joda.time.LocalDateTime;
+import org.onlab.util.Tools;
 import org.onosproject.event.AbstractEvent;
 import org.onosproject.net.Device;
 import org.onosproject.net.Port;
@@ -132,7 +132,7 @@
             return super.toString();
         }
         return toStringHelper(this)
-                .add("time", new LocalDateTime(time()))
+                .add("time", Tools.defaultOffsetDataTime(time()))
                 .add("type", type())
                 .add("subject", subject())
                 .add("port", port)
diff --git a/core/api/src/main/java/org/onosproject/net/host/HostEvent.java b/core/api/src/main/java/org/onosproject/net/host/HostEvent.java
index 318c3ff..0ed491f 100644
--- a/core/api/src/main/java/org/onosproject/net/host/HostEvent.java
+++ b/core/api/src/main/java/org/onosproject/net/host/HostEvent.java
@@ -15,7 +15,7 @@
  */
 package org.onosproject.net.host;
 
-import org.joda.time.LocalDateTime;
+import org.onlab.util.Tools;
 import org.onosproject.event.AbstractEvent;
 import org.onosproject.net.Host;
 
@@ -104,7 +104,7 @@
     @Override
     public String toString() {
         return toStringHelper(this)
-                .add("time", new LocalDateTime(time()))
+                .add("time", Tools.defaultOffsetDataTime(time()))
                 .add("type", type())
                 .add("subject", subject())
                 .add("prevSubject", prevSubject())
diff --git a/core/api/src/main/java/org/onosproject/net/intf/InterfaceEvent.java b/core/api/src/main/java/org/onosproject/net/intf/InterfaceEvent.java
index 1e7d9ba..9d26208 100644
--- a/core/api/src/main/java/org/onosproject/net/intf/InterfaceEvent.java
+++ b/core/api/src/main/java/org/onosproject/net/intf/InterfaceEvent.java
@@ -16,7 +16,7 @@
 
 package org.onosproject.net.intf;
 
-import org.joda.time.LocalDateTime;
+import org.onlab.util.Tools;
 import org.onosproject.event.AbstractEvent;
 
 import static com.google.common.base.MoreObjects.toStringHelper;
@@ -106,7 +106,7 @@
             return super.toString();
         }
         return toStringHelper(this)
-                .add("time", new LocalDateTime(time()))
+                .add("time", Tools.defaultOffsetDataTime(time()))
                 .add("type", type())
                 .add("subject", subject())
                 .add("prevSubject", prevSubject)
diff --git a/core/api/src/main/java/org/onosproject/store/service/Versioned.java b/core/api/src/main/java/org/onosproject/store/service/Versioned.java
index a3f555e..5033240 100644
--- a/core/api/src/main/java/org/onosproject/store/service/Versioned.java
+++ b/core/api/src/main/java/org/onosproject/store/service/Versioned.java
@@ -18,8 +18,8 @@
 
 import java.util.function.Function;
 
-import org.joda.time.DateTime;
 import org.onlab.util.ByteArraySizeHashPrinter;
+import org.onlab.util.Tools;
 
 import com.google.common.base.MoreObjects;
 import com.google.common.base.Objects;
@@ -143,7 +143,7 @@
         return MoreObjects.toStringHelper(this)
             .add("value", value instanceof byte[] ? new ByteArraySizeHashPrinter((byte[]) value) : value)
             .add("version", version)
-            .add("creationTime", new DateTime(creationTime))
+            .add("creationTime", Tools.defaultOffsetDataTime(creationTime))
             .toString();
     }
 }
diff --git a/core/api/src/main/java/org/onosproject/store/service/WallClockTimestamp.java b/core/api/src/main/java/org/onosproject/store/service/WallClockTimestamp.java
index 307de2e..78f6b19 100644
--- a/core/api/src/main/java/org/onosproject/store/service/WallClockTimestamp.java
+++ b/core/api/src/main/java/org/onosproject/store/service/WallClockTimestamp.java
@@ -19,7 +19,7 @@
 
 import java.util.Objects;
 
-import org.joda.time.DateTime;
+import org.onlab.util.Tools;
 import org.onosproject.store.Timestamp;
 
 import com.google.common.collect.ComparisonChain;
@@ -69,7 +69,7 @@
 
     @Override
     public String toString() {
-        return new DateTime(unixTimestamp).toString();
+        return Tools.defaultOffsetDataTime(unixTimestamp).toString();
     }
 
     /**
diff --git a/core/api/src/main/java/org/onosproject/ui/table/cell/TimeFormatter.java b/core/api/src/main/java/org/onosproject/ui/table/cell/TimeFormatter.java
index f2dba03..adf8ead 100644
--- a/core/api/src/main/java/org/onosproject/ui/table/cell/TimeFormatter.java
+++ b/core/api/src/main/java/org/onosproject/ui/table/cell/TimeFormatter.java
@@ -16,13 +16,21 @@
 
 package org.onosproject.ui.table.cell;
 
-import org.joda.time.DateTime;
-import org.joda.time.DateTimeZone;
-import org.joda.time.format.DateTimeFormat;
-import org.joda.time.format.DateTimeFormatter;
 
+import static java.time.temporal.ChronoField.CLOCK_HOUR_OF_AMPM;
+import static java.time.temporal.ChronoField.MINUTE_OF_HOUR;
+import static java.time.temporal.ChronoField.SECOND_OF_MINUTE;
+
+import java.time.Instant;
+import java.time.ZoneId;
+import java.time.format.DateTimeFormatter;
+import java.time.format.DateTimeFormatterBuilder;
+import java.time.temporal.ChronoField;
+import java.time.temporal.TemporalAccessor;
 import java.util.Locale;
 
+import org.joda.time.DateTimeZone;
+
 /**
  * Formats time values using {@link DateTimeFormatter}.
  */
@@ -38,7 +46,19 @@
      * Constructs a time formatter that uses the default locale and timezone.
      */
     public TimeFormatter() {
-        dtf = DateTimeFormat.longTime();
+        dtf = new DateTimeFormatterBuilder()
+                .appendValue(CLOCK_HOUR_OF_AMPM)
+                .appendLiteral(':')
+                .appendValue(MINUTE_OF_HOUR, 2)
+                .optionalStart()
+                .appendLiteral(':')
+                .appendValue(SECOND_OF_MINUTE, 2)
+                .appendLiteral(' ')
+                .appendText(ChronoField.AMPM_OF_DAY)
+                .optionalStart()
+                .appendLiteral(' ')
+                .appendOffset("+HH:MM", "+00:00")
+                .toFormatter();
     }
 
     /**
@@ -58,14 +78,33 @@
      * @param zone time zone to use
      * @return self, for chaining
      */
-    public TimeFormatter withZone(DateTimeZone zone) {
+    public TimeFormatter withZone(ZoneId zone) {
         dtf = dtf.withZone(zone);
         return this;
     }
 
+    /**
+     * Sets the time zone to use for formatting the time.
+     *
+     * @param zone time zone to use
+     * @return self, for chaining
+     *
+     * @deprecated in 1.12.0
+     */
+    @Deprecated
+    public TimeFormatter withZone(DateTimeZone zone) {
+        return withZone(zone.toTimeZone().toZoneId());
+    }
+
     @Override
     protected String nonNullFormat(Object value) {
-        return dtf.print((DateTime) value);
+        if (value instanceof TemporalAccessor) {
+            return dtf.format((TemporalAccessor) value);
+        } else if (value instanceof org.joda.time.DateTime) {
+            return dtf.format(Instant.ofEpochMilli(((org.joda.time.DateTime) value).getMillis()));
+        }
+        // should never reach here
+        return String.valueOf(value);
     }
 
 }
diff --git a/core/api/src/test/java/org/onosproject/cluster/ClusterServiceAdapter.java b/core/api/src/test/java/org/onosproject/cluster/ClusterServiceAdapter.java
index cc6916f..bc40f67 100644
--- a/core/api/src/test/java/org/onosproject/cluster/ClusterServiceAdapter.java
+++ b/core/api/src/test/java/org/onosproject/cluster/ClusterServiceAdapter.java
@@ -15,9 +15,9 @@
  */
 package org.onosproject.cluster;
 
+import java.time.Instant;
 import java.util.Set;
 
-import org.joda.time.DateTime;
 import org.onlab.packet.IpAddress;
 
 import com.google.common.collect.ImmutableSet;
@@ -56,7 +56,7 @@
     }
 
     @Override
-    public DateTime getLastUpdated(NodeId nodeId) {
+    public Instant getLastUpdatedInstant(NodeId nodeId) {
         return null;
     }
 
diff --git a/core/api/src/test/java/org/onosproject/ui/table/cell/TimeFormatterTest.java b/core/api/src/test/java/org/onosproject/ui/table/cell/TimeFormatterTest.java
index 4f73490..7517aac 100644
--- a/core/api/src/test/java/org/onosproject/ui/table/cell/TimeFormatterTest.java
+++ b/core/api/src/test/java/org/onosproject/ui/table/cell/TimeFormatterTest.java
@@ -16,14 +16,15 @@
 
 package org.onosproject.ui.table.cell;
 
-import org.joda.time.DateTime;
-import org.joda.time.DateTimeZone;
 import org.junit.Test;
 import org.onosproject.ui.table.CellFormatter;
 
+import java.time.OffsetDateTime;
+import java.time.ZoneOffset;
 import java.util.Locale;
 
-import static org.junit.Assert.assertTrue;
+import static org.hamcrest.Matchers.isOneOf;
+import static org.junit.Assert.assertThat;
 
 /**
  * Unit tests for {@link TimeFormatter}.
@@ -31,9 +32,9 @@
 public class TimeFormatterTest {
 
     private static final Locale LOCALE = Locale.ENGLISH;
-    private static final DateTimeZone ZONE = DateTimeZone.UTC;
+    private static final ZoneOffset ZONE = ZoneOffset.UTC;
 
-    private static final DateTime TIME = new DateTime(2015, 5, 4, 15, 30, ZONE);
+    private static final OffsetDateTime TIME = OffsetDateTime.of(2015, 5, 4, 15, 30, 0, 0, ZONE);
     private static final String EXP_ZONE_NAME = "3:30:00 PM UTC";
     private static final String EXP_ZONE_OFFSET = "3:30:00 PM +00:00";
 
@@ -45,7 +46,6 @@
 
     @Test
     public void basic() {
-        assertTrue("wrong format", (EXP_ZONE_NAME.equals(fmt.format(TIME)) ||
-                   EXP_ZONE_OFFSET.equals(fmt.format(TIME))));
+        assertThat(fmt.format(TIME), isOneOf(EXP_ZONE_OFFSET, EXP_ZONE_NAME));
     }
 }
diff --git a/core/common/BUCK b/core/common/BUCK
index 46d519d..56c6970 100644
--- a/core/common/BUCK
+++ b/core/common/BUCK
@@ -4,7 +4,6 @@
     '//lib:METRICS',
     '//incubator/api:onos-incubator-api',
     '//core/api:onos-api',
-    '//lib:joda-time',
 ]
 
 TEST_DEPS = [
diff --git a/core/common/src/test/java/org/onosproject/store/trivial/SimpleClusterStore.java b/core/common/src/test/java/org/onosproject/store/trivial/SimpleClusterStore.java
index fb50123..4a4fdaf 100644
--- a/core/common/src/test/java/org/onosproject/store/trivial/SimpleClusterStore.java
+++ b/core/common/src/test/java/org/onosproject/store/trivial/SimpleClusterStore.java
@@ -23,7 +23,6 @@
 import org.apache.felix.scr.annotations.Reference;
 import org.apache.felix.scr.annotations.ReferenceCardinality;
 import org.apache.felix.scr.annotations.Service;
-import org.joda.time.DateTime;
 import org.onlab.packet.IpAddress;
 import org.onosproject.cluster.ClusterEvent;
 import org.onosproject.cluster.ClusterStore;
@@ -41,6 +40,7 @@
 import org.onosproject.store.AbstractStore;
 import org.slf4j.Logger;
 
+import java.time.Instant;
 import java.util.Set;
 import java.util.function.Function;
 
@@ -64,7 +64,7 @@
 
     private ControllerNode instance;
 
-    private final DateTime creationTime = DateTime.now();
+    private final Instant creationTime = Instant.now();
 
     @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
     protected EventDeliveryService eventDispatcher;
@@ -123,7 +123,7 @@
     }
 
     @Override
-    public DateTime getLastUpdated(NodeId nodeId) {
+    public Instant getLastUpdatedInstant(NodeId nodeId) {
         return creationTime;
     }
 
diff --git a/core/common/src/test/java/org/onosproject/store/trivial/SimpleMastershipStore.java b/core/common/src/test/java/org/onosproject/store/trivial/SimpleMastershipStore.java
index e533f23..31480e8 100644
--- a/core/common/src/test/java/org/onosproject/store/trivial/SimpleMastershipStore.java
+++ b/core/common/src/test/java/org/onosproject/store/trivial/SimpleMastershipStore.java
@@ -19,6 +19,7 @@
 import static org.onosproject.mastership.MastershipEvent.Type.MASTER_CHANGED;
 import static org.slf4j.LoggerFactory.getLogger;
 
+import java.time.Instant;
 import java.util.ArrayList;
 import java.util.Collections;
 import java.util.HashMap;
@@ -36,7 +37,6 @@
 import org.apache.felix.scr.annotations.Reference;
 import org.apache.felix.scr.annotations.ReferenceCardinality;
 import org.apache.felix.scr.annotations.Service;
-import org.joda.time.DateTime;
 import org.onlab.packet.IpAddress;
 import org.onosproject.cluster.ClusterEventListener;
 import org.onosproject.cluster.ClusterService;
@@ -97,7 +97,7 @@
 
             clusterService = new ClusterService() {
 
-                private final DateTime creationTime = DateTime.now();
+                private final Instant creationTime = Instant.now();
 
                 @Override
                 public ControllerNode getLocalNode() {
@@ -135,7 +135,7 @@
                 }
 
                 @Override
-                public DateTime getLastUpdated(NodeId nodeId) {
+                public Instant getLastUpdatedInstant(NodeId nodeId) {
                     return creationTime;
                 }
 
diff --git a/core/net/BUCK b/core/net/BUCK
index 26b898d..267c70a 100644
--- a/core/net/BUCK
+++ b/core/net/BUCK
@@ -9,7 +9,6 @@
     '//incubator/net:onos-incubator-net',
     '//incubator/store:onos-incubator-store',
     '//core/store/serializers:onos-core-serializers',
-    '//lib:joda-time',
 ]
 
 TEST_DEPS = [
diff --git a/core/net/src/main/java/org/onosproject/cluster/impl/ClusterManager.java b/core/net/src/main/java/org/onosproject/cluster/impl/ClusterManager.java
index fc3d802..92a3894 100644
--- a/core/net/src/main/java/org/onosproject/cluster/impl/ClusterManager.java
+++ b/core/net/src/main/java/org/onosproject/cluster/impl/ClusterManager.java
@@ -15,6 +15,7 @@
  */
 package org.onosproject.cluster.impl;
 
+import java.time.Instant;
 import java.util.ArrayList;
 import java.util.Collection;
 import java.util.Collections;
@@ -31,7 +32,6 @@
 import org.apache.felix.scr.annotations.ReferenceCardinality;
 import org.apache.felix.scr.annotations.Service;
 import org.apache.karaf.system.SystemService;
-import org.joda.time.DateTime;
 import org.onlab.packet.IpAddress;
 import org.onlab.util.Tools;
 import org.onosproject.cluster.ClusterAdminService;
@@ -147,9 +147,9 @@
     }
 
     @Override
-    public DateTime getLastUpdated(NodeId nodeId) {
+    public Instant getLastUpdatedInstant(NodeId nodeId) {
         checkPermission(CLUSTER_READ);
-        return store.getLastUpdated(nodeId);
+        return store.getLastUpdatedInstant(nodeId);
     }
 
     @Override
diff --git a/core/net/src/main/java/org/onosproject/net/device/impl/DeviceManager.java b/core/net/src/main/java/org/onosproject/net/device/impl/DeviceManager.java
index bbf6d39..eb477be 100644
--- a/core/net/src/main/java/org/onosproject/net/device/impl/DeviceManager.java
+++ b/core/net/src/main/java/org/onosproject/net/device/impl/DeviceManager.java
@@ -25,7 +25,6 @@
 import org.apache.felix.scr.annotations.Reference;
 import org.apache.felix.scr.annotations.ReferenceCardinality;
 import org.apache.felix.scr.annotations.Service;
-import org.joda.time.DateTime;
 import org.onlab.util.KryoNamespace;
 import org.onlab.util.Tools;
 import org.onosproject.cluster.ClusterService;
@@ -74,6 +73,7 @@
 import org.onosproject.store.service.Serializer;
 import org.slf4j.Logger;
 
+import java.time.Instant;
 import java.util.Collection;
 import java.util.HashSet;
 import java.util.List;
@@ -180,9 +180,9 @@
      */
     private class LocalStatus {
         boolean connected;
-        DateTime dateTime;
+        Instant dateTime;
 
-        public LocalStatus(boolean b, DateTime now) {
+        public LocalStatus(boolean b, Instant now) {
             connected = b;
             dateTime = now;
         }
@@ -333,7 +333,7 @@
         if (ls == null) {
             return "No Record";
         }
-        String timeAgo = Tools.timeAgo(ls.dateTime.getMillis());
+        String timeAgo = Tools.timeAgo(ls.dateTime.toEpochMilli());
         return (ls.connected) ? "connected " + timeAgo : "disconnected " + timeAgo;
     }
 
@@ -508,7 +508,7 @@
             checkNotNull(deviceDescription, DEVICE_DESCRIPTION_NULL);
             checkValidity();
 
-            deviceLocalStatus.put(deviceId, new LocalStatus(true, DateTime.now()));
+            deviceLocalStatus.put(deviceId, new LocalStatus(true, Instant.now()));
 
             BasicDeviceConfig cfg = networkConfigService.getConfig(deviceId, BasicDeviceConfig.class);
             if (!isAllowed(cfg)) {
@@ -564,7 +564,7 @@
         public void deviceDisconnected(DeviceId deviceId) {
             checkNotNull(deviceId, DEVICE_ID_NULL);
             checkValidity();
-            deviceLocalStatus.put(deviceId, new LocalStatus(false, DateTime.now()));
+            deviceLocalStatus.put(deviceId, new LocalStatus(false, Instant.now()));
             log.info("Device {} disconnected from this node", deviceId);
 
             List<PortDescription> descs = store.getPortDescriptions(provider().id(), deviceId)
diff --git a/core/store/dist/BUCK b/core/store/dist/BUCK
index 3483f64..b6be5ec 100644
--- a/core/store/dist/BUCK
+++ b/core/store/dist/BUCK
@@ -14,7 +14,6 @@
     '//lib:netty-resolver',
     '//lib:commons-math3',
     '//incubator/api:onos-incubator-api',
-    '//lib:joda-time',
 ]
 
 TEST_DEPS = [
diff --git a/core/store/dist/src/main/java/org/onosproject/store/cluster/impl/DistributedClusterStore.java b/core/store/dist/src/main/java/org/onosproject/store/cluster/impl/DistributedClusterStore.java
index 34b2f0b..b106763 100644
--- a/core/store/dist/src/main/java/org/onosproject/store/cluster/impl/DistributedClusterStore.java
+++ b/core/store/dist/src/main/java/org/onosproject/store/cluster/impl/DistributedClusterStore.java
@@ -27,7 +27,6 @@
 import org.apache.felix.scr.annotations.ReferenceCardinality;
 import org.apache.felix.scr.annotations.ReferencePolicy;
 import org.apache.felix.scr.annotations.Service;
-import org.joda.time.DateTime;
 import org.onlab.packet.IpAddress;
 import org.onlab.util.KryoNamespace;
 import org.onosproject.cfg.ConfigProperty;
@@ -50,6 +49,7 @@
 import org.osgi.service.component.ComponentContext;
 import org.slf4j.Logger;
 
+import java.time.Instant;
 import java.util.Map;
 import java.util.Objects;
 import java.util.Set;
@@ -106,7 +106,7 @@
     private final Map<NodeId, ControllerNode> allNodes = Maps.newConcurrentMap();
     private final Map<NodeId, State> nodeStates = Maps.newConcurrentMap();
     private final Map<NodeId, Version> nodeVersions = Maps.newConcurrentMap();
-    private final Map<NodeId, DateTime> nodeLastUpdatedTimes = Maps.newConcurrentMap();
+    private final Map<NodeId, Instant> nodeLastUpdatedTimes = Maps.newConcurrentMap();
 
     private ScheduledExecutorService heartBeatSender = Executors.newSingleThreadScheduledExecutor(
             groupedThreads("onos/cluster/membership", "heartbeat-sender", log));
@@ -273,7 +273,7 @@
             if (newVersion != null) {
                 nodeVersions.put(nodeId, newVersion);
             }
-            nodeLastUpdatedTimes.put(nodeId, DateTime.now());
+            nodeLastUpdatedTimes.put(nodeId, Instant.now());
             notifyChange(nodeId, currentState, newState, currentVersion, newVersion);
         }
     }
@@ -357,7 +357,7 @@
     }
 
     @Override
-    public DateTime getLastUpdated(NodeId nodeId) {
+    public Instant getLastUpdatedInstant(NodeId nodeId) {
         return nodeLastUpdatedTimes.get(nodeId);
     }