    001/*
    002 * Licensed to the Apache Software Foundation (ASF) under one or more
    003 * contributor license agreements.  See the NOTICE file distributed with
    004 * this work for additional information regarding copyright ownership.
    005 * The ASF licenses this file to You under the Apache License, Version 2.0
    006 * (the "License"); you may not use this file except in compliance with
    007 * the License.  You may obtain a copy of the License at
    008 *
    009 *      http://www.apache.org/licenses/LICENSE-2.0
    010 *
    011 * Unless required by applicable law or agreed to in writing, software
    012 * distributed under the License is distributed on an "AS IS" BASIS,
    013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    014 * See the License for the specific language governing permissions and
    015 * limitations under the License.
    016 */
    017package org.apache.commons.pool2.impl;
    018
    019import java.io.PrintWriter;
    020import java.io.StringWriter;
    021import java.text.SimpleDateFormat;
    022import java.util.Objects;
    023
    024import org.apache.commons.pool2.PooledObject;
    025
    026/**
    027 * Implementation of object that is used to provide information on pooled
    028 * objects via JMX.
    029 *
    030 * @since 2.0
    031 */
    032public class DefaultPooledObjectInfo implements DefaultPooledObjectInfoMBean {
    033
    034    private static final String PATTERN = "yyyy-MM-dd HH:mm:ss Z";
    035
    036    private final PooledObject<?> pooledObject;
    037
    038    /**
    039     * Constructs a new instance for the given pooled object.
    040     *
    041     * @param pooledObject The pooled object that this instance will represent
    042     * @throws NullPointerException if {@code obj} is {@code null}
    043     */
    044    public DefaultPooledObjectInfo(final PooledObject<?> pooledObject) {
    045        this.pooledObject = Objects.requireNonNull(pooledObject, "pooledObject");
    046    }
    047
    048    @Override
    049    public long getBorrowedCount() {
    050        return pooledObject.getBorrowedCount();
    051    }
    052
    053    @Override
    054    public long getCreateTime() {
    055        return pooledObject.getCreateInstant().toEpochMilli();
    056    }
    057
    058    @Override
    059    public String getCreateTimeFormatted() {
    060        return getTimeMillisFormatted(getCreateTime());
    061    }
    062
    063    @Override
    064    public long getLastBorrowTime() {
    065        return pooledObject.getLastBorrowInstant().toEpochMilli();
    066    }
    067
    068
    069    @Override
    070    public String getLastBorrowTimeFormatted() {
    071        return getTimeMillisFormatted(getLastBorrowTime());
    072    }
    073
    074    @Override
    075    public String getLastBorrowTrace() {
    076        final StringWriter sw = new StringWriter();
    077        pooledObject.printStackTrace(new PrintWriter(sw));
    078        return sw.toString();
    079    }
    080
    081    @Override
    082    public long getLastReturnTime() {
    083        return pooledObject.getLastReturnInstant().toEpochMilli();
    084    }
    085
    086    @Override
    087    public String getLastReturnTimeFormatted() {
    088        return getTimeMillisFormatted(getLastReturnTime());
    089    }
    090
    091    @Override
    092    public String getPooledObjectToString() {
    093        return Objects.toString(pooledObject.getObject(), null);
    094    }
    095
    096    @Override
    097    public String getPooledObjectType() {
    098        final Object object = pooledObject.getObject();
    099        return object != null ? object.getClass().getName() : null;
    100    }
    101
    102    private String getTimeMillisFormatted(final long millis) {
    103        return new SimpleDateFormat(PATTERN).format(Long.valueOf(millis));
    104    }
    105
    106    /**
    107     * @since 2.4.3
    108     */
    109    @Override
    110    public String toString() {
    111        final StringBuilder builder = new StringBuilder();
    112        builder.append("DefaultPooledObjectInfo [pooledObject=");
    113        builder.append(pooledObject);
    114        builder.append("]");
    115        return builder.toString();
    116    }
    117}