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//---PACKAGE DECLARATION--- |
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package uk.ac.ukc.iscream.filter.plugins; |
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|
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//---IMPORTS--- |
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import uk.ac.ukc.iscream.filter.PluginFilter; |
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import uk.ac.ukc.iscream.filter.*; |
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import uk.ac.ukc.iscream.core.*; |
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import uk.ac.ukc.iscream.util.*; |
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import uk.ac.ukc.iscream.componentmanager.*; |
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|
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/** |
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* A first plugin! ;-) |
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* this one rejects packets that do not contain all of the 'essential' data. |
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* |
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* @author $Author: ajm4 $ |
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* @version $Id: EnforceEssentialData__Plugin.java,v 1.3 2000/12/13 15:08:01 ajm4 Exp $ |
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*/ |
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public class EnforceEssentialData__Plugin implements PluginFilter { |
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|
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//---FINAL ATTRIBUTES--- |
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|
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/** |
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* The current CVS revision of this class |
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*/ |
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public final String REVISION = "$Revision: 1.3 $"; |
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|
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public final String DESC = "Rejects packets that do not have an ip, machine_name, seq_no and date specified as attributes of the root packet tag."; |
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|
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//---STATIC METHODS--- |
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|
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//---CONSTRUCTORS--- |
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|
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//---PUBLIC METHODS--- |
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|
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// apply the filter and return true if successful. |
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public boolean runFilter(XMLPacket packet){ |
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|
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// return false if any of the essential data is not present. |
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if (packet.getParam("packet.attributes.machine_name") == null |
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|| packet.getParam("packet.attributes.ip") == null |
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|| packet.getParam("packet.attributes.seq_no") == null |
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|| packet.getParam("packet.attributes.date") == null){ |
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return false; |
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} |
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|
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// otherwise return true! |
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return true; |
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|
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} |
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|
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/** |
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* Overrides the {@link java.lang.Object#toString() Object.toString()} |
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* method to provide clean logging (every class should have this). |
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* |
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* This uses the uk.ac.ukc.iscream.util.NameFormat class |
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* to format the toString() |
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* |
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* @return the name of this class and its CVS revision |
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*/ |
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public String toString() { |
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return FormatName.getName( |
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_name, |
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getClass().getName(), |
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REVISION); |
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} |
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|
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/** |
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* return the String representation of what the filter does |
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*/ |
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public String getDescription(){ |
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return DESC; |
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} |
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|
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//---PRIVATE METHODS--- |
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|
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//---ACCESSOR/MUTATOR METHODS--- |
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|
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//---ATTRIBUTES--- |
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|
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/** |
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* This is the friendly identifier of the |
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* component this class is running in. |
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* eg, a Filter may be called "filter1", |
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* If this class does not have an owning |
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* component, a name from the configuration |
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* can be placed here. This name could also |
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* be changed to null for utility classes. |
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*/ |
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private String _name = FilterMain.NAME; |
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|
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/** |
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* This holds a reference to the |
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* system logger that is being used. |
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*/ |
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private Logger _logger = ReferenceManager.getInstance().getLogger(); |
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|
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//---STATIC ATTRIBUTES--- |
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|
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} |
