private static void saveVersion(File versionFile) {
try {
DataOutputStream versionOutputStream =
new DataOutputStream(new BufferedOutputStream(new FileOutputStream(versionFile)));
try {
DataInputOutputUtil.writeINT(versionOutputStream, VERSION);
} finally {
versionOutputStream.close();
}
} catch (IOException ignore) {
}
}
static {
File snapshotInfoFile = new File(new File(getJarsDir()), "snapshots_info");
int currentVersion = -1;
File versionFile = getVersionFile(snapshotInfoFile);
if (versionFile.exists()) {
try {
DataInputStream versionStream =
new DataInputStream(new BufferedInputStream(new FileInputStream(versionFile)));
try {
currentVersion = DataInputOutputUtil.readINT(versionStream);
} finally {
versionStream.close();
}
} catch (IOException ignore) {
}
}
if (currentVersion != VERSION) {
PersistentHashMap.deleteFilesStartingWith(snapshotInfoFile);
saveVersion(versionFile);
}
PersistentHashMap<String, CacheLibraryInfo> info = null;
for (int i = 0; i < 2; ++i) {
try {
info =
new PersistentHashMap<String, CacheLibraryInfo>(
snapshotInfoFile,
new EnumeratorStringDescriptor(),
new DataExternalizer<CacheLibraryInfo>() {
@Override
public void save(@NotNull DataOutput out, CacheLibraryInfo value)
throws IOException {
IOUtil.writeUTF(out, value.mySnapshotPath);
out.writeLong(value.myModificationTime);
out.writeLong(value.myFileLength);
}
@Override
public CacheLibraryInfo read(@NotNull DataInput in) throws IOException {
return new CacheLibraryInfo(IOUtil.readUTF(in), in.readLong(), in.readLong());
}
});
if (i == 0) removeStaleJarFilesIfNeeded(snapshotInfoFile, info);
break;
} catch (IOException ex) {
PersistentHashMap.deleteFilesStartingWith(snapshotInfoFile);
saveVersion(versionFile);
}
}
assert info != null;
ourCachedLibraryInfo = info;
FlushingDaemon.everyFiveSeconds(
new Runnable() {
@Override
public void run() {
flushCachedLibraryInfos();
}
});
ShutDownTracker.getInstance()
.registerShutdownTask(
new Runnable() {
@Override
public void run() {
flushCachedLibraryInfos();
}
});
}