| 47 |
|
* Return a reference to the single class. |
| 48 |
|
* Construct it if it does not already exist, otherwise just return the reference. |
| 49 |
|
*/ |
| 50 |
< |
public static WebFeeder getInstance() { |
| 50 |
> |
public synchronized static WebFeeder getInstance() { |
| 51 |
|
if (_instance == null){ |
| 52 |
|
_instance = new WebFeeder(); |
| 53 |
|
} |
| 148 |
|
|
| 149 |
|
// list the files and delete as appropriate |
| 150 |
|
File alertsDir = new File(rootPath, alertSubDir); |
| 151 |
+ |
// get all the hostnames directories |
| 152 |
|
File[] contents = alertsDir.listFiles(); |
| 153 |
|
for(int i=0; i < contents.length; i++) { |
| 154 |
+ |
// get a single directory from the array.. |
| 155 |
|
File hostdir = contents[i]; |
| 156 |
+ |
// ..and check it's a directory |
| 157 |
|
if(hostdir.isDirectory()) { |
| 158 |
+ |
// if this is set, we clean files older than it |
| 159 |
+ |
long deleteFiles = -1; |
| 160 |
+ |
// get all the contents of that directory |
| 161 |
|
File[] hostdirContents = hostdir.listFiles(); |
| 162 |
|
for(int j=0; j < hostdirContents.length; j++) { |
| 163 |
|
File alertFile = hostdirContents[j]; |
| 164 |
+ |
// get the filename.. |
| 165 |
|
String filename = alertFile.getName(); |
| 166 |
+ |
// ..and see if it ends with OK or FINAL |
| 167 |
|
if(filename.endsWith(Alert.alertLevels[0]) || |
| 168 |
|
filename.endsWith(Alert.alertLevels[Alert.alertLevels.length-1])) { |
| 169 |
< |
// it ends with either OK or FINAL |
| 169 |
> |
// it does end with either OK or FINAL |
| 170 |
|
// ... so we can check it for deletion |
| 171 |
|
long lastModified = alertFile.lastModified(); |
| 172 |
|
long age = System.currentTimeMillis() - lastModified; |
| 173 |
|
if(age > ((long) deleteOlderThan*1000)) { |
| 174 |
+ |
// if we're on a final heartbeat, we probably want to |
| 175 |
+ |
// clean up any stale alerts left behind |
| 176 |
+ |
// by setting this flag, we'll clean them up on leaving this loop |
| 177 |
+ |
if(filename.endsWith(".HB."+Alert.alertLevels[Alert.alertLevels.length-1])) { |
| 178 |
+ |
// we do this so that delete files is set to the |
| 179 |
+ |
// latest date of a HB.FINAL. There should only be |
| 180 |
+ |
// one of them though :) |
| 181 |
+ |
if(lastModified > deleteFiles) { |
| 182 |
+ |
deleteFiles = lastModified; |
| 183 |
+ |
} |
| 184 |
+ |
} |
| 185 |
|
// it's also older than our age to delete older than |
| 186 |
|
if(!alertFile.delete()) { |
| 187 |
|
_logger.write(this.toString(), Logger.WARNING, "Failed to delete the following 'old' alert file: "+alertFile.getPath()); |
| 189 |
|
} |
| 190 |
|
} |
| 191 |
|
} |
| 192 |
+ |
// cleanup stale alerts |
| 193 |
+ |
if(deleteFiles >= 0) { |
| 194 |
+ |
File[] remainingHostdirContents = hostdir.listFiles(); |
| 195 |
+ |
for(int j=0; j < remainingHostdirContents.length; j++) { |
| 196 |
+ |
File alertFile = remainingHostdirContents[j]; |
| 197 |
+ |
if(alertFile.lastModified() < deleteFiles) { |
| 198 |
+ |
// alert file is older than the most recent |
| 199 |
+ |
// FINAL Heartbeat alert. |
| 200 |
+ |
if(alertFile.delete()) { |
| 201 |
+ |
_logger.write(this.toString(), Logger.DEBUG, "Deleted stale alert file: "+alertFile.getPath()); |
| 202 |
+ |
} |
| 203 |
+ |
else { |
| 204 |
+ |
_logger.write(this.toString(), Logger.WARNING, "Failed to delete the following 'stale' alert file: "+alertFile.getPath()); |
| 205 |
+ |
} |
| 206 |
+ |
} |
| 207 |
+ |
} |
| 208 |
+ |
} |
| 209 |
+ |
// ---- RECAP ---- |
| 210 |
+ |
// at this point, we have cleaned up any OK or FINAL alerts |
| 211 |
+ |
// that have passed our age limit. We have then cleaned up |
| 212 |
+ |
// any alerts older the most recent Heartbeat FINAL alert, |
| 213 |
+ |
// as these are probably stale. Any files left are valid and |
| 214 |
+ |
// active alerts. We are now in a position to remove the host |
| 215 |
+ |
// directory if it's empty. |
| 216 |
+ |
// --------------- |
| 217 |
+ |
// do a quick check to see if the directory is now empty |
| 218 |
+ |
File[] newHostdirContents = hostdir.listFiles(); |
| 219 |
+ |
if(newHostdirContents.length == 0) { |
| 220 |
+ |
// it does seem to be, try and delete it |
| 221 |
+ |
// this will fail anyway if files still remain |
| 222 |
+ |
if(!hostdir.delete()) { |
| 223 |
+ |
_logger.write(this.toString(), Logger.WARNING, "Failed to delete the following empty host directory: "+hostdir.getPath()); |
| 224 |
+ |
} |
| 225 |
+ |
} |
| 226 |
|
} |
| 227 |
|
} |
| 228 |
|
} |
| 293 |
|
File outFile; |
| 294 |
|
// check if we're at a special "end case" (OK or FINAL) |
| 295 |
|
if(alert.getLevel()==0 || alert.getLevel()==Alert.alertLevels.length-1) { |
| 296 |
+ |
if(alert.getAttributeName().equals("Heartbeat") && alert.getLevel()==Alert.alertLevels.length-1) { |
| 297 |
+ |
// new file is something like alert.nnnnnnnn.HB.FINAL |
| 298 |
+ |
outFile = new File(rootPath, destFile+".HB."+Alert.alertLevels[alert.getLevel()]); |
| 299 |
+ |
} else { |
| 300 |
+ |
// new file is something like alert.nnnnnnnn.OK |
| 301 |
+ |
outFile = new File(rootPath, destFile+"."+Alert.alertLevels[alert.getLevel()]); |
| 302 |
+ |
} |
| 303 |
|
File oldFile = new File(rootPath, destFile); |
| 244 |
– |
outFile = new File(rootPath, destFile+"."+Alert.alertLevels[alert.getLevel()]); |
| 304 |
|
if(!oldFile.renameTo(outFile)) { |
| 305 |
|
_logger.write(this.toString(), Logger.WARNING, "Failed to rename old file, "+oldFile.getPath()+" to new file, "+outFile.getPath()); |
| 306 |
|
} |
