@NotNull
private String createRemoteFile(
@NotNull ObjectId id, @NotNull ObjectLoader loader, @NotNull Uploader uploader)
throws IOException {
// Create LFS stream.
final String hash;
final String cached = cacheSha256.get(id.name());
long size = 0;
if (cached == null) {
final MessageDigest md = createSha256();
try (InputStream istream = loader.openStream()) {
byte[] buffer = new byte[0x10000];
while (true) {
int read = istream.read(buffer);
if (read <= 0) break;
md.update(buffer, 0, read);
size += read;
}
}
hash = new String(Hex.encodeHex(md.digest(), true));
cacheSha256.put(id.name(), hash);
cache.commit();
} else {
hash = cached;
}
uploader.upload(id, new Meta(hash, size));
return hash;
}
@NotNull
private String createLocalFile(@NotNull ObjectId id, @NotNull ObjectLoader loader)
throws IOException {
// Create LFS stream.
final File tmpFile = new File(tempPath, UUID.randomUUID().toString());
final MessageDigest md = createSha256();
try (InputStream istream = loader.openStream();
OutputStream ostream = new FileOutputStream(tmpFile)) {
byte[] buffer = new byte[0x10000];
while (true) {
int size = istream.read(buffer);
if (size <= 0) break;
ostream.write(buffer, 0, size);
md.update(buffer, 0, size);
}
}
final String hash = new String(Hex.encodeHex(md.digest(), true));
cacheSha256.putIfAbsent(id.name(), hash);
cache.commit();
// Rename file.
final File lfsFile =
new File(
basePath,
"lfs/objects/" + hash.substring(0, 2) + "/" + hash.substring(2, 4) + "/" + hash);
makeParentDirs(lfsFile.getParentFile());
if (lfsFile.exists()) {
if (!tmpFile.delete()) {
log.warn("Can't delete temporary file: {}", lfsFile.getAbsolutePath());
}
} else if (!tmpFile.renameTo(lfsFile)) {
throw new IOException("Can't rename file: " + tmpFile + " -> " + lfsFile);
}
return hash;
}
@NotNull
private InputStream openAttributes(@NotNull ObjectReader reader, @Nullable ObjectId id)
throws IOException {
if (ObjectId.zeroId().equals(id)) {
return new ByteArrayInputStream(new byte[0]);
}
return reader.open(id, Constants.OBJ_BLOB).openStream();
}