public void writeChecksums() throws IOException {
ensureOpen();
ImmutableMap<String, StoreFileMetaData> files = list();
String checksumName = CHECKSUMS_PREFIX + System.currentTimeMillis();
synchronized (mutex) {
Map<String, String> checksums = new HashMap<>();
for (StoreFileMetaData metaData : files.values()) {
if (metaData.checksum() != null) {
checksums.put(metaData.name(), metaData.checksum());
}
}
while (directory.fileExists(checksumName)) {
checksumName = CHECKSUMS_PREFIX + System.currentTimeMillis();
}
try (IndexOutput output = directory.createOutput(checksumName, IOContext.DEFAULT, true)) {
output.writeInt(0); // version
output.writeStringStringMap(checksums);
}
}
for (StoreFileMetaData metaData : files.values()) {
if (metaData.name().startsWith(CHECKSUMS_PREFIX) && !checksumName.equals(metaData.name())) {
try {
directory.deleteFileChecksum(metaData.name());
} catch (Throwable e) {
// ignore
}
}
}
}
