diff options
author | Ashlee Young <ashlee@onosfw.com> | 2015-09-09 22:15:21 -0700 |
---|---|---|
committer | Ashlee Young <ashlee@onosfw.com> | 2015-09-09 22:15:21 -0700 |
commit | 13d05bc8458758ee39cb829098241e89616717ee (patch) | |
tree | 22a4d1ce65f15952f07a3df5af4b462b4697cb3a /framework/src/onos/core/api/src/main/java/org/onosproject/store/service/WallClockTimestamp.java | |
parent | 6139282e1e93c2322076de4b91b1c85d0bc4a8b3 (diff) |
ONOS checkin based on commit tag e796610b1f721d02f9b0e213cf6f7790c10ecd60
Change-Id: Ife8810491034fe7becdba75dda20de4267bd15cd
Diffstat (limited to 'framework/src/onos/core/api/src/main/java/org/onosproject/store/service/WallClockTimestamp.java')
-rw-r--r-- | framework/src/onos/core/api/src/main/java/org/onosproject/store/service/WallClockTimestamp.java | 85 |
1 files changed, 85 insertions, 0 deletions
diff --git a/framework/src/onos/core/api/src/main/java/org/onosproject/store/service/WallClockTimestamp.java b/framework/src/onos/core/api/src/main/java/org/onosproject/store/service/WallClockTimestamp.java new file mode 100644 index 00000000..0cc7b453 --- /dev/null +++ b/framework/src/onos/core/api/src/main/java/org/onosproject/store/service/WallClockTimestamp.java @@ -0,0 +1,85 @@ +/* + * Copyright 2014 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.store.service; + +import static com.google.common.base.Preconditions.checkArgument; + +import java.util.Objects; + +import org.onosproject.store.Timestamp; + +import com.google.common.base.MoreObjects; +import com.google.common.collect.ComparisonChain; + +/** + * A Timestamp that derives its value from the prevailing + * wallclock time on the controller where it is generated. + */ +public class WallClockTimestamp implements Timestamp { + + private final long unixTimestamp; + + public WallClockTimestamp() { + unixTimestamp = System.currentTimeMillis(); + } + + public WallClockTimestamp(long timestamp) { + unixTimestamp = timestamp; + } + + @Override + public int compareTo(Timestamp o) { + checkArgument(o instanceof WallClockTimestamp, + "Must be WallClockTimestamp", o); + WallClockTimestamp that = (WallClockTimestamp) o; + + return ComparisonChain.start() + .compare(this.unixTimestamp, that.unixTimestamp) + .result(); + } + @Override + public int hashCode() { + return Objects.hash(unixTimestamp); + } + + @Override + public boolean equals(Object obj) { + if (this == obj) { + return true; + } + if (!(obj instanceof WallClockTimestamp)) { + return false; + } + WallClockTimestamp that = (WallClockTimestamp) obj; + return Objects.equals(this.unixTimestamp, that.unixTimestamp); + } + + @Override + public String toString() { + return MoreObjects.toStringHelper(getClass()) + .add("unixTimestamp", unixTimestamp) + .toString(); + } + + /** + * Returns the unixTimestamp. + * + * @return unix timestamp + */ + public long unixTimestamp() { + return unixTimestamp; + } +} |