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//---PACKAGE DECLARATION--- |
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package uk.ac.ukc.iscream.client; |
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package uk.org.iscream.client; |
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//---IMPORTS--- |
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import uk.ac.ukc.iscream.componentmanager.*; |
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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.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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import java.io.*; |
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/** |
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* Provides a feed to the webpage system. |
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* |
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* !! still needs a routine to "maintain" alerts !! |
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* |
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* @author $Author$ |
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* @version $Id$ |
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*/ |
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private WebFeeder() { |
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// do something, or nothing.. but must be private |
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// don't need to cleanup latest data |
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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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File alertsDir = new File(rootPath+"/"+alertSubDir); |
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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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} |
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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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} |
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//---PUBLIC METHODS--- |
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// that to a file. |
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public void receiveXMLPacket(XMLPacket packet) { |
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String packetType = packet.getParam("packet.attributes.type"); |
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if(packetType == null || !packetType.equals("data")) { |
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// bail out, without warning |
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// this is probably a heartbeat or similar |
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return; |
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} |
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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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} |
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public void receiveAlert(Alert alert) { |
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// process and save |
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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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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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return; |
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} |
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// get raw data |
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String data = alert.printAll(); |
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String hostname = alert.getSource(); |
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// set paths |
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String destDir = rootPath+"/"+alertSubDir+"/"+hostname; |
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File outDir = new File(destDir); |
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String destFile = destDir+"/"+alertFileName+"."+String.valueOf(alert.getInitialAlertTime()); |
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File outFile; |
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// check if we're at a special "end case" (OK or FINAL) |
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if(alert.getLevel()==0 || alert.getLevel()==Alert.alertLevels.length-1) { |
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File oldFile = new File(destFile); |
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outFile = new File(destFile+"."+Alert.alertLevels[alert.getLevel()]); |
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if(!oldFile.renameTo(outFile)) { |
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_logger.write(this.toString(), Logger.WARNING, "Failed to rename old file, "+oldFile.getPath()+" to new file, "+outFile.getPath()); |
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} |
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} else { |
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outFile = new File(destFile); |
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} |
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// try to create directory |
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if(!outDir.exists()) { |
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if(!outDir.mkdirs()) { |
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// didn't exist, and we couldn't make it |
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_logger.write(this.toString(), Logger.ERROR, "Failed to create directory: "+outDir.getPath()); |
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// bail out |
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return; |
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} |
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} |
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// directory has been made, check file exists |
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if(!outFile.exists()) { |
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try { |
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outFile.createNewFile(); |
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} catch (IOException e) { |
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_logger.write(this.toString(), Logger.ERROR, "Failed to create file: "+e); |
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// bail out |
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return; |
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} |
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} |
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// file should now exist |
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if(outFile.canWrite()) { |
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PrintWriter out; |
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try { |
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out = new PrintWriter(new FileWriter(outFile)); |
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out.println(data); |
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out.close(); |
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} catch (IOException e) { |
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_logger.write(this.toString(), Logger.ERROR, "Failed to write file: "+e); |
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} |
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} |
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else { |
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_logger.write(this.toString(), Logger.ERROR, "File not writeable: "+outFile.getPath()); |
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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.FormatName class |
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* This uses the uk.org.iscream.util.FormatName 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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//---PRIVATE METHODS--- |
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/** |
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* Iterates through dir (a directory) and deletes |
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* all files and subdirectories. |
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* |
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* @param dir the directory to clear |
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* @return true if it succeeded |
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*/ |
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private boolean deleteContents(File dir) { |
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boolean success = true; |
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if(dir.isDirectory()) { |
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// is a directory |
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File[] contents = dir.listFiles(); |
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for(int i=0; i < contents.length; i++) { |
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File sub = contents[i]; |
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if(sub.isDirectory()) { |
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// lets get recursive |
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success = success & deleteContents(sub); |
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} |
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// it's a file or empty dir |
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success = success & sub.delete(); |
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} |
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} |
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else { |
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// not a directory? |
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success=false; |
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} |
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return success; |
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} |
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//---ACCESSOR/MUTATOR METHODS--- |
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//---ATTRIBUTES--- |