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tdb |
1.1 |
//---PACKAGE DECLARATION--- |
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tdb |
1.7 |
package uk.org.iscream.client; |
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tdb |
1.1 |
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//---IMPORTS--- |
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tdb |
1.7 |
import uk.org.iscream.componentmanager.*; |
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import uk.org.iscream.core.*; |
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import uk.org.iscream.util.*; |
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tdb |
1.2 |
import java.io.*; |
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tdb |
1.1 |
|
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/** |
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* Provides a feed to the webpage system. |
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* |
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tdb |
1.11 |
* !! There may also be need to have a Thread to grab any |
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* !! required config (groups, "nice names, etc) and dump |
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* !! that to a file. |
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tdb |
1.9 |
* |
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tdb |
1.2 |
* @author $Author: tdb1 $ |
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tdb |
1.12 |
* @version $Id: WebFeeder.java,v 1.11 2001/03/15 14:30:55 tdb1 Exp $ |
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tdb |
1.1 |
*/ |
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tdb |
1.11 |
public class WebFeeder extends Thread { |
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tdb |
1.1 |
|
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//---FINAL ATTRIBUTES--- |
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/** |
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* The current CVS revision of this class |
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*/ |
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tdb |
1.12 |
public static final String REVISION = "$Revision: 1.11 $"; |
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tdb |
1.11 |
|
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/** |
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* Default check period in seconds (30 minutes) |
31 |
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*/ |
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public final int DEFAULT_CHECK_PERIOD = 1800; |
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/** |
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* Delete alerts older than this in seconds, default. |
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*/ |
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public final int DEFAULT_AGE = 3600; |
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tdb |
1.1 |
|
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//---STATIC METHODS--- |
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/** |
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* Return a reference to the single class. |
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* Construct it if it does not already exist, otherwise just return the reference. |
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*/ |
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public static WebFeeder getInstance() { |
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if (_instance == null){ |
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_instance = new WebFeeder(); |
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} |
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return _instance; |
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} |
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//---CONSTRUCTORS--- |
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tdb |
1.11 |
|
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/** |
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* Construct a new WebFeeder. This will also wipe out any |
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* old Alerts, as these can't be carried from one session |
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* until the next. |
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*/ |
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tdb |
1.1 |
private WebFeeder() { |
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// do something, or nothing.. but must be private |
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tdb |
1.8 |
// don't need to cleanup latest data |
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tdb |
1.9 |
|
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// -- cleanup old alerts |
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// get config proxy |
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ConfigurationProxy cp = ConfigurationProxy.getInstance(); |
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// get file locations |
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String rootPath, alertSubDir, alertFileName; |
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try { |
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// work out where things are |
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rootPath = cp.getProperty("WebFeeder", "WebFeeder.rootPath"); |
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alertSubDir = cp.getProperty("WebFeeder", "WebFeeder.alertSubDir"); |
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tdb |
1.12 |
File alertsDir = new File(rootPath, alertSubDir); |
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tdb |
1.10 |
if(deleteContents(alertsDir)) { |
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_logger.write(this.toString(), Logger.DEBUG, "Deleted all files and directories from: "+rootPath+"/"+alertSubDir); |
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} else { |
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_logger.write(this.toString(), Logger.WARNING, "Failed to delete all files and directories from: "+rootPath+"/"+alertSubDir); |
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tdb |
1.9 |
} |
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// cleanup complete |
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} catch (PropertyNotFoundException e) { |
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_logger.write(this.toString(), Logger.ERROR, "Failed to cleanup on construction, due to failing to get config for Alert Data: "+e); |
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// just leave it at that |
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} |
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tdb |
1.11 |
|
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// set our name and startup |
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setName("client.WebFeeder"); |
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start(); |
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tdb |
1.1 |
} |
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//---PUBLIC METHODS--- |
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tdb |
1.11 |
/** |
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* Thread loop, will check at intervals for any files |
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* that need to be "cleaned up". This will normally |
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* be OK and FINAL alerts that have been around for longer |
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* than a specified period of time. |
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*/ |
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public void run() { |
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boolean running = true; |
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// get config proxy |
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ConfigurationProxy cp = ConfigurationProxy.getInstance(); |
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// loop round |
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while(running) { |
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// get our check period |
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int checkPeriod = 0; |
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try { |
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checkPeriod = Integer.parseInt(cp.getProperty("WebFeeder", "WebFeeder.checkPeriod")); |
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} catch (NumberFormatException e) { |
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checkPeriod = DEFAULT_CHECK_PERIOD; |
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_logger.write(toString(), Logger.WARNING, "Erronous WebFeeder.checkPeriod value in configuration using default of " + checkPeriod + " seconds"); |
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} catch (PropertyNotFoundException e) { |
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checkPeriod = DEFAULT_CHECK_PERIOD; |
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_logger.write(toString(), Logger.WARNING, "WebFeeder.checkPeriod value unavailable using default of " + checkPeriod + " seconds"); |
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} |
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// wait for the check period |
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try { |
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Thread.sleep(checkPeriod * 1000); |
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} catch (InterruptedException e) { |
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} |
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// get alerts directory |
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String rootPath, alertSubDir, alertFileName; |
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try { |
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rootPath = cp.getProperty("WebFeeder", "WebFeeder.rootPath"); |
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alertSubDir = cp.getProperty("WebFeeder", "WebFeeder.alertSubDir"); |
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alertFileName = cp.getProperty("WebFeeder", "WebFeeder.alertFileName"); |
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} catch (PropertyNotFoundException e) { |
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_logger.write(this.toString(), Logger.ERROR, "Failed to get config for Alert Data: "+e); |
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// bail out |
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continue; |
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} |
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// get the "age" barrier |
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int deleteOlderThan = 0; |
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try { |
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deleteOlderThan = Integer.parseInt(cp.getProperty("WebFeeder", "WebFeeder.alertDeleteOlderThan")); |
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} catch (NumberFormatException e) { |
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deleteOlderThan = DEFAULT_AGE; |
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_logger.write(toString(), Logger.WARNING, "Erronous WebFeeder.alertDeleteOlderThan value in configuration using default of " + deleteOlderThan + " seconds"); |
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} catch (PropertyNotFoundException e) { |
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deleteOlderThan = DEFAULT_AGE; |
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_logger.write(toString(), Logger.WARNING, "WebFeeder.alertDeleteOlderThan value unavailable using default of " + deleteOlderThan + " seconds"); |
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} |
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144 |
tdb |
1.12 |
// list the files and delete as appropriate |
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File alertsDir = new File(rootPath, alertSubDir); |
146 |
tdb |
1.11 |
File[] contents = alertsDir.listFiles(); |
147 |
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for(int i=0; i < contents.length; i++) { |
148 |
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File hostdir = contents[i]; |
149 |
tdb |
1.12 |
if(hostdir.isDirectory()) { |
150 |
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File[] hostdirContents = hostdir.listFiles(); |
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for(int j=0; j < hostdirContents.length; j++) { |
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File alertFile = hostdirContents[j]; |
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String filename = alertFile.getName(); |
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if(filename.endsWith(Alert.alertLevels[0]) || |
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filename.endsWith(Alert.alertLevels[Alert.alertLevels.length-1])) { |
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// it ends with either OK or FINAL |
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// ... so we can check it for deletion |
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long lastModified = alertFile.lastModified(); |
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long age = System.currentTimeMillis() - lastModified; |
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if(age > ((long) deleteOlderThan*1000)) { |
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// it's also older than our age to delete older than |
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if(!alertFile.delete()) { |
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_logger.write(this.toString(), Logger.WARNING, "Failed to delete the following 'old' alert file: "+alertFile.getPath()); |
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} |
165 |
tdb |
1.11 |
} |
166 |
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} |
167 |
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} |
168 |
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} |
169 |
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} |
170 |
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} |
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} |
172 |
tdb |
1.1 |
|
173 |
tdb |
1.11 |
/** |
174 |
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* Handles an XMLPacket. This will write it out to disk |
175 |
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* in an appropriate manner. |
176 |
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* |
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* @param packet the XMLPacket to write |
178 |
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*/ |
179 |
tdb |
1.1 |
public void receiveXMLPacket(XMLPacket packet) { |
180 |
tdb |
1.4 |
String packetType = packet.getParam("packet.attributes.type"); |
181 |
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if(packetType == null || !packetType.equals("data")) { |
182 |
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// bail out, without warning |
183 |
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// this is probably a heartbeat or similar |
184 |
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return; |
185 |
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} |
186 |
tdb |
1.2 |
// get config proxy |
187 |
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ConfigurationProxy cp = ConfigurationProxy.getInstance(); |
188 |
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// get file locations |
189 |
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String rootPath, latestSubDir, latestFileName; |
190 |
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try { |
191 |
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rootPath = cp.getProperty("WebFeeder", "WebFeeder.rootPath"); |
192 |
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latestSubDir = cp.getProperty("WebFeeder", "WebFeeder.latestSubDir"); |
193 |
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latestFileName = cp.getProperty("WebFeeder", "WebFeeder.latestFileName"); |
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} catch (PropertyNotFoundException e) { |
195 |
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_logger.write(this.toString(), Logger.ERROR, "Failed to get config for Latest Data: "+e); |
196 |
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// bail out |
197 |
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return; |
198 |
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} |
199 |
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// get raw data |
200 |
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String data = packet.printAll(); |
201 |
tdb |
1.3 |
String hostname = packet.getParam("packet.attributes.machine_name"); |
202 |
tdb |
1.2 |
// set paths |
203 |
tdb |
1.12 |
File outDir = new File(rootPath, latestSubDir+"/"+hostname); |
204 |
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File outFile = new File(rootPath, latestSubDir+"/"+hostname+"/"+latestFileName); |
205 |
tdb |
1.11 |
// write the data out |
206 |
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writeData(outDir, outFile, data); |
207 |
tdb |
1.1 |
} |
208 |
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209 |
tdb |
1.11 |
/** |
210 |
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* Handles an Alert. This will write it out to disk |
211 |
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* in an appropriate manner. |
212 |
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* |
213 |
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* @param alert the Alert object to write |
214 |
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*/ |
215 |
tdb |
1.1 |
public void receiveAlert(Alert alert) { |
216 |
tdb |
1.5 |
// get config proxy |
217 |
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ConfigurationProxy cp = ConfigurationProxy.getInstance(); |
218 |
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// get file locations |
219 |
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String rootPath, alertSubDir, alertFileName; |
220 |
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try { |
221 |
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rootPath = cp.getProperty("WebFeeder", "WebFeeder.rootPath"); |
222 |
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alertSubDir = cp.getProperty("WebFeeder", "WebFeeder.alertSubDir"); |
223 |
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alertFileName = cp.getProperty("WebFeeder", "WebFeeder.alertFileName"); |
224 |
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} catch (PropertyNotFoundException e) { |
225 |
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_logger.write(this.toString(), Logger.ERROR, "Failed to get config for Alert Data: "+e); |
226 |
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// bail out |
227 |
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return; |
228 |
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} |
229 |
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// get raw data |
230 |
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String data = alert.printAll(); |
231 |
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String hostname = alert.getSource(); |
232 |
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// set paths |
233 |
tdb |
1.12 |
File outDir = new File(rootPath, alertSubDir+"/"+hostname); |
234 |
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String destFile = alertSubDir+"/"+hostname+"/"+alertFileName+"."+String.valueOf(alert.getInitialAlertTime()); |
235 |
tdb |
1.9 |
File outFile; |
236 |
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// check if we're at a special "end case" (OK or FINAL) |
237 |
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if(alert.getLevel()==0 || alert.getLevel()==Alert.alertLevels.length-1) { |
238 |
tdb |
1.12 |
File oldFile = new File(rootPath, destFile); |
239 |
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outFile = new File(rootPath, destFile+"."+Alert.alertLevels[alert.getLevel()]); |
240 |
tdb |
1.9 |
if(!oldFile.renameTo(outFile)) { |
241 |
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_logger.write(this.toString(), Logger.WARNING, "Failed to rename old file, "+oldFile.getPath()+" to new file, "+outFile.getPath()); |
242 |
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} |
243 |
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} else { |
244 |
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outFile = new File(destFile); |
245 |
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} |
246 |
tdb |
1.11 |
// write the data out |
247 |
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writeData(outDir, outFile, data); |
248 |
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} |
249 |
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|
250 |
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/** |
251 |
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* Overrides the {@link java.lang.Object#toString() Object.toString()} |
252 |
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* method to provide clean logging (every class should have this). |
253 |
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* |
254 |
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* This uses the uk.org.iscream.util.FormatName class |
255 |
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* to format the toString() |
256 |
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* |
257 |
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* @return the name of this class and its CVS revision |
258 |
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*/ |
259 |
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public String toString() { |
260 |
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return FormatName.getName( |
261 |
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_name, |
262 |
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getClass().getName(), |
263 |
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REVISION); |
264 |
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} |
265 |
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266 |
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//---PRIVATE METHODS--- |
267 |
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268 |
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/** |
269 |
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* Attempts to write "data" to "outFile" in "outDir". |
270 |
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* |
271 |
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* Performs checks to create the directories, and the file. |
272 |
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* Does not "return" anything to indicate failure or success. |
273 |
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* |
274 |
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* @param outDir the directory to put the file in |
275 |
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* @param outFile the filename to put the data in |
276 |
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* @param data the String of data to write |
277 |
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*/ |
278 |
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private void writeData(File outDir, File outFile, String data) { |
279 |
tdb |
1.5 |
// try to create directory |
280 |
|
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if(!outDir.exists()) { |
281 |
|
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if(!outDir.mkdirs()) { |
282 |
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// didn't exist, and we couldn't make it |
283 |
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_logger.write(this.toString(), Logger.ERROR, "Failed to create directory: "+outDir.getPath()); |
284 |
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// bail out |
285 |
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return; |
286 |
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} |
287 |
|
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} |
288 |
|
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// directory has been made, check file exists |
289 |
|
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if(!outFile.exists()) { |
290 |
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try { |
291 |
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outFile.createNewFile(); |
292 |
|
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} catch (IOException e) { |
293 |
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_logger.write(this.toString(), Logger.ERROR, "Failed to create file: "+e); |
294 |
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// bail out |
295 |
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return; |
296 |
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} |
297 |
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} |
298 |
|
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// file should now exist |
299 |
|
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if(outFile.canWrite()) { |
300 |
|
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PrintWriter out; |
301 |
|
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try { |
302 |
tdb |
1.8 |
out = new PrintWriter(new FileWriter(outFile)); |
303 |
tdb |
1.5 |
out.println(data); |
304 |
|
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out.close(); |
305 |
|
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} catch (IOException e) { |
306 |
|
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_logger.write(this.toString(), Logger.ERROR, "Failed to write file: "+e); |
307 |
|
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} |
308 |
|
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} |
309 |
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else { |
310 |
|
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_logger.write(this.toString(), Logger.ERROR, "File not writeable: "+outFile.getPath()); |
311 |
|
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} |
312 |
tdb |
1.1 |
} |
313 |
tdb |
1.10 |
|
314 |
|
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/** |
315 |
|
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* Iterates through dir (a directory) and deletes |
316 |
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* all files and subdirectories. |
317 |
|
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* |
318 |
|
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* @param dir the directory to clear |
319 |
|
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* @return true if it succeeded |
320 |
|
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*/ |
321 |
|
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private boolean deleteContents(File dir) { |
322 |
|
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boolean success = true; |
323 |
|
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if(dir.isDirectory()) { |
324 |
|
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// is a directory |
325 |
|
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File[] contents = dir.listFiles(); |
326 |
|
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for(int i=0; i < contents.length; i++) { |
327 |
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File sub = contents[i]; |
328 |
|
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if(sub.isDirectory()) { |
329 |
|
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// lets get recursive |
330 |
|
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success = success & deleteContents(sub); |
331 |
|
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} |
332 |
|
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// it's a file or empty dir |
333 |
|
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success = success & sub.delete(); |
334 |
|
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} |
335 |
|
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} |
336 |
|
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else { |
337 |
|
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// not a directory? |
338 |
|
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success=false; |
339 |
|
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} |
340 |
|
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return success; |
341 |
|
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} |
342 |
|
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|
343 |
tdb |
1.1 |
//---ACCESSOR/MUTATOR METHODS--- |
344 |
|
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|
345 |
|
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//---ATTRIBUTES--- |
346 |
|
|
|
347 |
|
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/** |
348 |
|
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* This is the friendly identifier of the |
349 |
|
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* component this class is running in. |
350 |
|
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* eg, a Filter may be called "filter1", |
351 |
|
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* If this class does not have an owning |
352 |
|
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* component, a name from the configuration |
353 |
|
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* can be placed here. This name could also |
354 |
|
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* be changed to null for utility classes. |
355 |
|
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*/ |
356 |
|
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private String _name = ClientMain.NAME; |
357 |
|
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|
358 |
|
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/** |
359 |
|
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* This holds a reference to the |
360 |
|
|
* system logger that is being used. |
361 |
|
|
*/ |
362 |
|
|
private Logger _logger = ReferenceManager.getInstance().getLogger(); |
363 |
|
|
|
364 |
|
|
//---STATIC ATTRIBUTES--- |
365 |
|
|
|
366 |
|
|
/** |
367 |
|
|
* A reference to the single instance of this class |
368 |
|
|
*/ |
369 |
|
|
private static WebFeeder _instance; |
370 |
|
|
|
371 |
|
|
} |