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 * Implements providing 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    @Override
069    public String getLastBorrowTimeFormatted() {
070        return getTimeMillisFormatted(getLastBorrowTime());
071    }
072
073    @Override
074    public String getLastBorrowTrace() {
075        final StringWriter sw = new StringWriter();
076        pooledObject.printStackTrace(new PrintWriter(sw));
077        return sw.toString();
078    }
079
080    @Override
081    public long getLastReturnTime() {
082        return pooledObject.getLastReturnInstant().toEpochMilli();
083    }
084
085    @Override
086    public String getLastReturnTimeFormatted() {
087        return getTimeMillisFormatted(getLastReturnTime());
088    }
089
090    @Override
091    public String getPooledObjectToString() {
092        return Objects.toString(pooledObject.getObject(), null);
093    }
094
095    @Override
096    public String getPooledObjectType() {
097        final Object object = pooledObject.getObject();
098        return object != null ? object.getClass().getName() : null;
099    }
100
101    private String getTimeMillisFormatted(final long millis) {
102        return new SimpleDateFormat(PATTERN).format(Long.valueOf(millis));
103    }
104
105    /**
106     * @since 2.4.3
107     */
108    @Override
109    public String toString() {
110        final StringBuilder builder = new StringBuilder();
111        builder.append("DefaultPooledObjectInfo [pooledObject=");
112        builder.append(pooledObject);
113        builder.append("]");
114        return builder.toString();
115    }
116}