org.apache.tomcat.dbcp.pool2.TrackedUse Maven / Gradle / Ivy
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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.apache.tomcat.dbcp.pool2;
import java.time.Instant;
/**
* Allows pooled objects to make information available about when and how they were used available to the object pool.
* The object pool may, but is not required, to use this information to make more informed decisions when determining
* the state of a pooled object - for instance whether or not the object has been abandoned.
*
* @since 2.0
*/
public interface TrackedUse {
/**
* Gets the last time this object was used in milliseconds.
*
* @return the last time this object was used in milliseconds.
* @deprecated Use {@link #getLastUsedInstant()} which offers the best precision.
*/
@Deprecated
long getLastUsed();
/**
* Gets the last Instant this object was used.
*
* Starting with Java 9, the JRE {@code SystemClock} precision is increased usually down to microseconds, or tenth
* of microseconds, depending on the OS, Hardware, and JVM implementation.
*
*
* @return the last Instant this object was used.
* @since 2.11.0
*/
default Instant getLastUsedInstant() {
return Instant.ofEpochMilli(getLastUsed());
}
}