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Excalibur Instrument is an instrumentation utility that allows you to attach a separate JVM to your running application to determine its health. Instrumentation is the process of exposing the internal state in a way that is easy for an administrator or help desk personell to digest. Excalibur Instrumentation is such a package that you can use for your Avalon based projects.

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/* 
 * 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.
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 * See the License for the specific language governing permissions and
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package org.apache.excalibur.instrument.client;

public interface InstrumentSampleData
    extends InstrumentSampleElementData
{
    /**
     * Requests that the sample's lease be updated.
     */
    void updateLease();
    
    /**
     * Returns a snapshot of the data in the sample.
     *
     * @return A snapshot of the sample.
     */
    InstrumentSampleSnapshotData getSnapshot();
}