public static synchronized void deleteExpired() {
Date expiryDate;
long freeSpace = getFreeUserSpace();
if (freeSpace < Globals.DISK_FREE_THRESHOLD)
expiryDate = new Date(new Date().getTime() - Globals.FILE_KEEP_IN_CACHE_DURATION_MS_MINIMAL);
else expiryDate = new Date(new Date().getTime() - Globals.FILE_KEEP_IN_CACHE_DURATION_MS);
Log.warn(
"running Delete Expired job",
"expiryDate=" + expiryDate.toString() + " , freeSpace=" + freeSpace);
File folder = new File(Config.cachePath);
for (final File file : folder.listFiles()) {
if (file.isFile() && file.getName().endsWith(Globals.FILE_EXT_DATA)) {
BasicFileAttributes attrs;
try {
attrs = Files.readAttributes(file.toPath(), BasicFileAttributes.class);
Date fileLastAccessTime = new Date(attrs.lastAccessTime().toMillis());
if (fileLastAccessTime.before(expiryDate)) deleteDataAndHeaderFiles(file);
} catch (Exception e) {
Log.error("Cannot read file attributes", e.getCause() + " : " + e.getMessage());
e.printStackTrace();
}
}
}
}
private static void deleteFile(File file) {
try {
if (file.exists()) {
file.delete();
Log.info("File " + file.getName() + " is deleted.");
}
} catch (Exception e) {
Log.info("Error deleting file " + file.getName() + ". Error:" + e.getMessage());
}
}
public static synchronized void deleteIncompleteDownloads() {
try {
File directory = new File(Config.downloadPath);
File[] files = directory.listFiles();
for (File file : files) {
try {
if (!file.delete()) Log.info("Cannnot delete temp file: " + file.getName());
} catch (Exception e) {
Log.info("Cannnot delete temp file: " + file.getName() + ". Error:" + e.getMessage());
}
}
} catch (Exception e) {
Log.error("Error in deleteIncompleteDownloads()", e.getCause() + ": " + e.getMessage());
}
}
public static long getFreeUserSpace() {
File folder = new File(Config.cachePath);
try {
// return (int)((folder.getUsableSpace() * 100.0f) / folder.getTotalSpace());
return folder.getUsableSpace();
} catch (Exception e) {
Log.error("Cannot calculate free space percentage", e.getCause() + ": " + e.getMessage());
e.printStackTrace();
return 0;
}
}
public static synchronized void moveDownloadedFileToCache(
String name, ArrayList<String> headers) {
int version = getCurrentVersion(name, null);
version++;
Path src = Paths.get(Config.downloadPath, name);
Path dest = Paths.get(Config.cachePath, getDataFileName(name, version));
Path destHeaders = Paths.get(Config.cachePath, getHeadersFileName(name, version));
try {
Files.move(src, dest);
saveHeaders(destHeaders, headers);
} catch (IOException e) {
Log.error(
"Error moving file: IOException", "From " + src + " to " + dest + ". " + e.getMessage());
e.printStackTrace();
}
if (version != 0) deleteFileDuplicates(name);
}
public static synchronized FileInfo getFileInfo(String name) {
int version = getCurrentVersion(name, null);
Path dataFilePath = Paths.get(Config.cachePath, getDataFileName(name, version));
Path headerFilePath = Paths.get(Config.cachePath, getHeadersFileName(name, version));
Date fileLastModifiedTime;
BasicFileAttributes attrs;
try {
attrs = Files.readAttributes(dataFilePath, BasicFileAttributes.class);
fileLastModifiedTime = new Date(attrs.lastModifiedTime().toMillis());
} catch (Exception e) {
Log.error("Cannot read file attributes", e.getCause() + ": " + e.getMessage());
e.printStackTrace();
return null;
}
// read headers
ArrayList<String> headers = loadHeaders(headerFilePath.toFile());
String url = null;
String etag = null;
for (String header : headers) {
if (header.startsWith(HttpConstants.HEADER_FILE_URL + ":")) {
url = header.split(":", 2)[1].trim();
} else if (header.startsWith(HttpConstants.HEADER_ETAG + ":")) {
etag = header.split(":", 2)[1].trim();
}
}
if (url != null) return new FileInfo(url, fileLastModifiedTime, etag);
else return null;
}
