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admin committed 2026-10-10 08:30:28 +02:00
1 parent 01c82a8223
commit 11bfe71124
15 files changed
+228 -85
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src/cloud/lunarsky/store/Cli.java
+3 -1
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@@ -109,7 +109,9 @@ public final class Cli {
}
if (verify) {
MessageDigest sha = digest("SHA-256"), md5 = digest("MD5");
byte[] buffer = new byte[65536]; long count = 0; int n;
byte[] buffer = new byte[65536];
long count = 0;
int n;
while ((n = input.read(buffer)) != -1) {
count += n;
sha.update(buffer, 0, n);
src/cloud/lunarsky/store/ClusterMigrate.java
+2 -1
View File
@@ -148,7 +148,8 @@ public final class ClusterMigrate {
}
connection.commit();
} catch (SQLException | IOException | RuntimeException error) {
try { connection.rollback(); } catch (SQLException rollback) { error.addSuppressed(rollback); }
try { connection.rollback(); }
catch (SQLException rollback) { error.addSuppressed(rollback); }
if (error instanceof IOException io) throw io;
if (error instanceof SQLException sql) throw sql;
throw (RuntimeException) error;
src/cloud/lunarsky/store/ClusterNode.java
+2 -1
View File
@@ -252,7 +252,8 @@ public final class ClusterNode implements AutoCloseable {
Runtime.getRuntime().addShutdownHook(new Thread(() -> {
server.stop(5);
executor.close();
try { node.close(); } catch (IOException error) { System.err.println("Node close failed: " + error); }
try { node.close(); }
catch (IOException error) { System.err.println("Node close failed: " + error); }
}));
server.start();
System.out.println("ObjectStore cluster node listening on :" + port);
src/cloud/lunarsky/store/ClusterStore.java
+63 -23
View File
@@ -38,8 +38,12 @@ final class ClusterStore implements ObjectStorage {
boolean testNodeDomains) throws IOException {
if (jdbcUrl == null || !jdbcUrl.startsWith("jdbc:postgresql://") || user == null || password == null)
throw new IllegalArgumentException("Invalid metadata database configuration");
this.jdbcUrl = jdbcUrl; this.user = user; this.password = password;
this.configuredBucket = bucket; this.maxObject = maxObject; this.maxTotal = maxTotal;
this.jdbcUrl = jdbcUrl;
this.user = user;
this.password = password;
this.configuredBucket = bucket;
this.maxObject = maxObject;
this.maxTotal = maxTotal;
this.testNodeDomains = testNodeDomains;
try (Connection connection = connect()) {
int format = SchemaMigrator.prepare(connection, bucket);
@@ -88,7 +92,8 @@ final class ClusterStore implements ObjectStorage {
int count = input.read(buffer, 0, (int) Math.min(buffer.length, remaining));
if (count < 0) throw new StoreException(400, "IncompleteBody", "Payload length does not match Content-Length");
if (count == 0) continue;
sha.update(buffer, 0, count); md5.update(buffer, 0, count);
sha.update(buffer, 0, count);
md5.update(buffer, 0, count);
output.write(buffer, 0, count);
remaining -= count;
}
@@ -169,8 +174,11 @@ final class ClusterStore implements ObjectStorage {
"INSERT INTO cluster_segments (generation, ordinal, segment_id, length, sha256, replicas, replica_ids) VALUES (?, ?, ?, ?, ?, 'v2', ?)")) {
for (int i = 0; i < segments.size(); i++) {
Segment segment = segments.get(i);
insert.setObject(1, generation); insert.setInt(2, i); insert.setObject(3, segment.id());
insert.setInt(4, segment.length()); insert.setBytes(5, segment.hash());
insert.setObject(1, generation);
insert.setInt(2, i);
insert.setObject(3, segment.id());
insert.setInt(4, segment.length());
insert.setBytes(5, segment.hash());
insert.setArray(6, connection.createArrayOf("uuid", segment.replicas().toArray()));
insert.addBatch();
}
@@ -178,13 +186,18 @@ final class ClusterStore implements ObjectStorage {
}
try (PreparedStatement update = connection.prepareStatement(
"INSERT INTO cluster_objects VALUES (?, ?, ?, ?, ?, ?, ?, ?) ON CONFLICT (bucket, object_key) DO UPDATE SET generation=EXCLUDED.generation, length=EXCLUDED.length, modified=EXCLUDED.modified, etag=EXCLUDED.etag, sha256=EXCLUDED.sha256, content_type=EXCLUDED.content_type")) {
bindObject(update, metadata, generation); update.executeUpdate();
bindObject(update, metadata, generation);
update.executeUpdate();
}
try (PreparedStatement update = connection.prepareStatement("UPDATE cluster_usage SET used_bytes=? WHERE bucket=?")) {
update.setLong(1, used - Math.max(0, previous) + length); update.setString(2, bucket); update.executeUpdate();
update.setLong(1, used - Math.max(0, previous) + length);
update.setString(2, bucket);
update.executeUpdate();
}
try (PreparedStatement delete = connection.prepareStatement("DELETE FROM cluster_tombstones WHERE bucket=? AND object_key=?")) {
delete.setString(1, bucket); delete.setString(2, key); delete.executeUpdate();
delete.setString(1, bucket);
delete.setString(2, key);
delete.executeUpdate();
}
connection.commit();
} catch (SQLException | RuntimeException error) {
@@ -204,7 +217,8 @@ final class ClusterStore implements ObjectStorage {
UUID generation;
try (PreparedStatement query = connection.prepareStatement(
"SELECT generation, length, modified, etag, sha256, content_type FROM cluster_objects WHERE bucket=? AND object_key=?")) {
query.setString(1, bucket); query.setString(2, key);
query.setString(1, bucket);
query.setString(2, key);
try (ResultSet result = query.executeQuery()) {
if (!result.next()) throw new StoreException(404, "NoSuchKey", "Object not found");
generation = (UUID) result.getObject(1);
@@ -245,17 +259,23 @@ final class ClusterStore implements ObjectStorage {
long used = lockUsage(connection, bucket);
long previous = currentLength(connection, bucket, key);
try (PreparedStatement delete = connection.prepareStatement("DELETE FROM cluster_objects WHERE bucket=? AND object_key=?")) {
delete.setString(1, bucket); delete.setString(2, key); delete.executeUpdate();
delete.setString(1, bucket);
delete.setString(2, key);
delete.executeUpdate();
}
try (PreparedStatement update = connection.prepareStatement(
"INSERT INTO cluster_tombstones VALUES (?, ?, ?, ?) ON CONFLICT (bucket, object_key) DO UPDATE SET generation=EXCLUDED.generation, deleted_at=EXCLUDED.deleted_at")) {
update.setString(1, bucket); update.setString(2, key);
update.setObject(3, UUID.randomUUID()); update.setLong(4, Instant.now().toEpochMilli());
update.setString(1, bucket);
update.setString(2, key);
update.setObject(3, UUID.randomUUID());
update.setLong(4, Instant.now().toEpochMilli());
update.executeUpdate();
}
if (previous >= 0) {
try (PreparedStatement update = connection.prepareStatement("UPDATE cluster_usage SET used_bytes=? WHERE bucket=?")) {
update.setLong(1, used - previous); update.setString(2, bucket); update.executeUpdate();
update.setLong(1, used - previous);
update.setString(2, bucket);
update.executeUpdate();
}
}
connection.commit();
@@ -297,10 +317,18 @@ final class ClusterStore implements ObjectStorage {
if (!key.startsWith(prefix)) break;
if (after != null && key.compareTo(after) <= 0) continue;
String group = commonPrefix(key, prefix, delimiter);
if (group != null && group.equals(activePrefix)) { lastKey = key; continue; }
if (entries.size() + prefixes.size() >= maxKeys) { truncated = true; break; }
if (group != null) { prefixes.add(group); activePrefix = group; }
else {
if (group != null && group.equals(activePrefix)) {
lastKey = key;
continue;
}
if (entries.size() + prefixes.size() >= maxKeys) {
truncated = true;
break;
}
if (group != null) {
prefixes.add(group);
activePrefix = group;
} else {
entries.add(new ListedObject(key, new Metadata(result.getLong(2), result.getLong(3),
result.getString(4), result.getBytes(5), bucket, key, result.getString(6))));
activePrefix = null;
@@ -327,14 +355,20 @@ final class ClusterStore implements ObjectStorage {
}
private long currentLength(Connection connection, String bucket, String key) throws SQLException {
try (PreparedStatement query = connection.prepareStatement("SELECT length FROM cluster_objects WHERE bucket=? AND object_key=?")) {
query.setString(1, bucket); query.setString(2, key);
query.setString(1, bucket);
query.setString(2, key);
try (ResultSet result = query.executeQuery()) { return result.next() ? result.getLong(1) : -1; }
}
}
private static void bindObject(PreparedStatement update, Metadata data, UUID generation) throws SQLException {
update.setString(1, data.bucket()); update.setString(2, data.key()); update.setObject(3, generation);
update.setLong(4, data.length()); update.setLong(5, data.modified()); update.setString(6, data.etag());
update.setBytes(7, data.sha256()); update.setString(8, data.contentType());
update.setString(1, data.bucket());
update.setString(2, data.key());
update.setObject(3, generation);
update.setLong(4, data.length());
update.setLong(5, data.modified());
update.setString(6, data.etag());
update.setBytes(7, data.sha256());
update.setString(8, data.contentType());
}
private static List<UUID> replicaIds(ResultSet result, int column) throws SQLException, IOException {
java.sql.Array value = result.getArray(column);
@@ -406,7 +440,10 @@ final class ClusterStore implements ObjectStorage {
healthy.add(id);
healthyHosts.add(nodes.faultDomain(node, testNodeDomains));
}
if (copy == null) { unrecoverable++; continue; }
if (copy == null) {
unrecoverable++;
continue;
}
for (int node : PlacementPolicy.candidates(segment.id(), nodes, testNodeDomains)) {
UUID host = nodes.faultDomain(node, testNodeDomains);
if (healthyHosts.contains(host)) continue;
@@ -484,6 +521,9 @@ final class ClusterStore implements ObjectStorage {
}
return current.read(buffer, offset, length);
}
@Override public void close() { closed = true; current = null; }
@Override public void close() {
closed = true;
current = null;
}
}
}
src/cloud/lunarsky/store/DiskStore.java
+32 -11
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@@ -34,8 +34,10 @@ final class DiskStore implements ObjectStorage {
DiskStore(Path root, long maxObject, long maxTotal) throws IOException {
this.root = root;
objects = root.resolve("objects"); temporary = root.resolve("pending");
this.maxObject = maxObject; this.maxTotal = maxTotal;
objects = root.resolve("objects");
temporary = root.resolve("pending");
this.maxObject = maxObject;
this.maxTotal = maxTotal;
Arrays.setAll(locks, i -> new Object());
Files.createDirectories(root);
FileChannel channel = FileChannel.open(root.resolve(".process.lock"), StandardOpenOption.CREATE, StandardOpenOption.WRITE);
@@ -45,7 +47,8 @@ final class DiskStore implements ObjectStorage {
try { acquired = channel.tryLock(); }
catch (OverlappingFileLockException e) { throw new IOException("Data directory is already in use", e); }
if (acquired == null) throw new IOException("Data directory is already in use");
Files.createDirectories(objects); Files.createDirectories(temporary);
Files.createDirectories(objects);
Files.createDirectories(temporary);
syncDirectory(root);
try (var paths = Files.list(temporary)) {
for (Path p : paths.toList()) if (p.getFileName().toString().endsWith(".part")) Files.delete(p);
@@ -140,12 +143,15 @@ final class DiskStore implements ObjectStorage {
long count = 0;
try (OutputStream out = Files.newOutputStream(pending)) {
out.write(new byte[headerLength]);
byte[] buffer = new byte[65536]; int n;
byte[] buffer = new byte[65536];
int n;
while ((n = input.read(buffer)) != -1) {
count += n;
if (count > length || count > maxObject)
throw new StoreException(413, "EntityTooLarge", "Payload exceeds declared size");
sha.update(buffer, 0, n); md5.update(buffer, 0, n); out.write(buffer, 0, n);
sha.update(buffer, 0, n);
md5.update(buffer, 0, n);
out.write(buffer, 0, n);
}
}
if (count != length) throw new StoreException(400, "IncompleteBody", "Payload length does not match Content-Length");
@@ -200,7 +206,10 @@ final class DiskStore implements ObjectStorage {
try { input = new DataInputStream(Files.newInputStream(destination)); }
catch (NoSuchFileException e) { throw new StoreException(404, "NoSuchKey", "Object not found"); }
try { return new OpenObject(readRecord(input).metadata(), input); }
catch (IOException e) { input.close(); throw e; }
catch (IOException e) {
input.close();
throw e;
}
}
}
@@ -242,10 +251,21 @@ final class DiskStore implements ObjectStorage {
int at = key.indexOf(delimiter, prefix.length());
if (at >= 0) group = key.substring(0, at + delimiter.length());
}
if (group != null && group.equals(activePrefix)) { lastKey = key; continue; }
if (entries.size() + prefixes.size() >= maxKeys) { truncated = true; break; }
if (group != null) { prefixes.add(group); activePrefix = group; }
else { entries.add(new ListedObject(key, meta)); activePrefix = null; }
if (group != null && group.equals(activePrefix)) {
lastKey = key;
continue;
}
if (entries.size() + prefixes.size() >= maxKeys) {
truncated = true;
break;
}
if (group != null) {
prefixes.add(group);
activePrefix = group;
} else {
entries.add(new ListedObject(key, meta));
activePrefix = null;
}
lastKey = key;
}
return new ListPage(entries, prefixes, truncated ? lastKey : null, truncated);
@@ -256,7 +276,8 @@ final class DiskStore implements ObjectStorage {
if (magic != MAGIC_V1 && magic != MAGIC_V2) throw new IOException("Invalid object record");
long length = in.readLong(), modified = in.readLong();
byte[] md5 = new byte[16], sha = new byte[32];
in.readFully(md5); in.readFully(sha);
in.readFully(md5);
in.readFully(sha);
if (length < 0) throw new IOException("Invalid object record length");
if (magic == MAGIC_V1)
return new Record(new Metadata(length, modified, SigV4.hex(md5), sha,
src/cloud/lunarsky/store/Main.java
+18 -7
View File
@@ -34,8 +34,10 @@ public final class Main {
}
Main(ObjectStorage store, MultipartStorage multipart, SigV4 authentication, String bucket) {
this.store = store; this.multipart = multipart;
this.authentication = authentication; this.bucket = bucket;
this.store = store;
this.multipart = multipart;
this.authentication = authentication;
this.bucket = bucket;
}
void handle(HttpExchange exchange) throws IOException {
@@ -58,7 +60,10 @@ public final class Main {
catch (Exception error) {
System.err.println("ObjectStore request failed: " + requestId + " " + error.getClass().getSimpleName());
sendError(exchange, 500, "InternalError", "Storage operation failed", requestId);
} finally { if (admitted) slots.release(); exchange.close(); }
} finally {
if (admitted) slots.release();
exchange.close();
}
}
private boolean handleStatus(HttpExchange exchange) throws IOException {
@@ -321,7 +326,8 @@ public final class Main {
else {
object.stream().skipNBytes(range.start());
exchange.sendResponseHeaders(status, range.length());
byte[] buffer = new byte[65536]; long left = range.length();
byte[] buffer = new byte[65536];
long left = range.length();
while (left > 0) {
int n = object.stream().read(buffer, 0, (int) Math.min(buffer.length, left));
if (n < 0) throw new IOException("Object body ended before its recorded length");
@@ -345,7 +351,8 @@ public final class Main {
if (parts[0].isEmpty()) {
long suffix = Long.parseLong(parts[1]);
if (suffix == 0) throw new NumberFormatException();
start = Math.max(0, size - suffix); end = size - 1;
start = Math.max(0, size - suffix);
end = size - 1;
} else {
start = Long.parseLong(parts[0]);
end = parts[1].isEmpty() ? size - 1 : Math.min(Long.parseLong(parts[1]), size - 1);
@@ -494,7 +501,8 @@ public final class Main {
? new InetSocketAddress(env.getOrDefault("BIND_ADDRESS", "127.0.0.1"), port)
: new InetSocketAddress(port), 64);
var executor = Executors.newVirtualThreadPerTaskExecutor();
server.setExecutor(executor); server.createContext("/", app::handle);
server.setExecutor(executor);
server.createContext("/", app::handle);
Runtime.getRuntime().addShutdownHook(new Thread(() -> {
server.stop(5);
executor.close();
@@ -526,7 +534,10 @@ public final class Main {
String[] units = {"KiB", "MiB", "GiB", "TiB"};
double value = bytes;
int unit = -1;
do { value /= 1024; unit++; } while (value >= 1024 && unit < units.length - 1);
do {
value /= 1024;
unit++;
} while (value >= 1024 && unit < units.length - 1);
return String.format(Locale.ROOT, "%.1f %s", value, units[unit]);
}
private static String required(Map<String, String> env, String key) {
src/cloud/lunarsky/store/MultipartStore.java
+15 -6
View File
@@ -97,11 +97,14 @@ final class MultipartStore implements MultipartStorage {
MessageDigest sha = digest("SHA-256"), md5 = digest("MD5");
long count = 0;
try (var output = Files.newOutputStream(pending)) {
byte[] buffer = new byte[65536]; int n;
byte[] buffer = new byte[65536];
int n;
while ((n = input.read(buffer)) != -1) {
count += n;
if (count > length) throw new StoreException(413, "EntityTooLarge", "Part exceeds declared size");
sha.update(buffer, 0, n); md5.update(buffer, 0, n); output.write(buffer, 0, n);
sha.update(buffer, 0, n);
md5.update(buffer, 0, n);
output.write(buffer, 0, n);
}
}
if (count != length) throw new StoreException(400, "IncompleteBody", "Part length does not match Content-Length");
@@ -124,7 +127,8 @@ final class MultipartStore implements MultipartStorage {
throw new StoreException(400, "InvalidPart", "No valid parts supplied");
MessageDigest sha = digest("SHA-256");
List<Path> paths = new ArrayList<>();
long total = 0; int last = 0;
long total = 0;
int last = 0;
for (Part part : parts) {
if (part.number() <= last || part.number() > 10000)
throw new StoreException(400, "InvalidPartOrder", "Parts must be in ascending order");
@@ -136,8 +140,12 @@ final class MultipartStore implements MultipartStorage {
if (total > store.maxObject()) throw new StoreException(413, "EntityTooLarge", "Object exceeds the configured size limit");
MessageDigest md5 = digest("MD5");
try (var input = Files.newInputStream(file)) {
byte[] buffer = new byte[65536]; int n;
while ((n = input.read(buffer)) != -1) { sha.update(buffer, 0, n); md5.update(buffer, 0, n); }
byte[] buffer = new byte[65536];
int n;
while ((n = input.read(buffer)) != -1) {
sha.update(buffer, 0, n);
md5.update(buffer, 0, n);
}
}
if (!SigV4.hex(md5.digest()).equals(part.etag().replace("\"", "")))
throw new StoreException(400, "InvalidPart", "Part ETag mismatch");
@@ -209,7 +217,8 @@ final class MultipartStore implements MultipartStorage {
}
int n = current.read(buffer, offset, length);
if (n >= 0) return n;
current.close(); current = null;
current.close();
current = null;
}
}
@Override public void close() throws IOException { if (current != null) current.close(); }
src/cloud/lunarsky/store/NodeClient.java
+3 -1
View File
@@ -43,7 +43,9 @@ final class NodeClient {
List<Node> nodes() { return nodes; }
Node node(int index) { return nodes.get(index); }
int index(UUID id) {
for (int i = 0; i < nodes.size(); i++) if (nodes.get(i).id().equals(id)) return i;
for (int i = 0; i < nodes.size(); i++) {
if (nodes.get(i).id().equals(id)) return i;
}
return -1;
}
UUID faultDomain(int index, boolean testNodeDomains) {
src/cloud/lunarsky/store/NodeRegistry.java
+4 -2
View File
@@ -52,7 +52,8 @@ final class NodeRegistry {
connection.commit();
return new NodeClient.Node(identity.nodeId(), identity.hostId(), url);
} catch (SQLException | IOException error) {
try { connection.rollback(); } catch (SQLException rollback) { error.addSuppressed(rollback); }
try { connection.rollback(); }
catch (SQLException rollback) { error.addSuppressed(rollback); }
if (error instanceof IOException io) throw io;
throw new IOException("Node registration failed", error);
} finally {
@@ -77,7 +78,8 @@ final class NodeRegistry {
connection.commit();
return nodes;
} catch (SQLException | IOException | RuntimeException error) {
try { connection.rollback(); } catch (SQLException rollback) { error.addSuppressed(rollback); }
try { connection.rollback(); }
catch (SQLException rollback) { error.addSuppressed(rollback); }
if (error instanceof IOException io) throw io;
if (error instanceof SQLException sql) throw new IOException("Node registry check failed", sql);
throw (RuntimeException) error;
src/cloud/lunarsky/store/SchemaMigrator.java
+2 -1
View File
@@ -60,7 +60,8 @@ final class SchemaMigrator {
connection.commit();
return format;
} catch (SQLException | IOException error) {
try { connection.rollback(); } catch (SQLException rollback) { error.addSuppressed(rollback); }
try { connection.rollback(); }
catch (SQLException rollback) { error.addSuppressed(rollback); }
if (error instanceof IOException io) throw io;
throw new IOException("Metadata schema migration failed", error);
} finally {
src/cloud/lunarsky/store/SigV4.java
+30 -12
View File
@@ -24,7 +24,10 @@ final class SigV4 {
private final Clock clock;
SigV4(String accessKey, String secretKey, String region, Clock clock) {
this.accessKey = accessKey; this.secretKey = secretKey; this.region = region; this.clock = clock;
this.accessKey = accessKey;
this.secretKey = secretKey;
this.region = region;
this.clock = clock;
}
String verify(String method, URI uri, Headers headers) {
@@ -111,17 +114,25 @@ final class SigV4 {
static String decode(String value) {
try {
var bytes=new java.io.ByteArrayOutputStream();
for(int i=0;i<value.length();){
if(value.charAt(i)=='%'){
if(i+2>=value.length())throw new IllegalArgumentException();
int hi=Character.digit(value.charAt(i+1),16),lo=Character.digit(value.charAt(i+2),16);
if(hi<0||lo<0)throw new IllegalArgumentException();
bytes.write((hi<<4)|lo);i+=3;
}else{int point=value.codePointAt(i);bytes.writeBytes(new String(Character.toChars(point)).getBytes(StandardCharsets.UTF_8));i+=Character.charCount(point);}
var bytes = new java.io.ByteArrayOutputStream();
for (int i = 0; i < value.length();) {
if (value.charAt(i) == '%') {
if (i + 2 >= value.length()) throw new IllegalArgumentException();
int hi = Character.digit(value.charAt(i + 1), 16);
int lo = Character.digit(value.charAt(i + 2), 16);
if (hi < 0 || lo < 0) throw new IllegalArgumentException();
bytes.write((hi << 4) | lo);
i += 3;
} else {
int point = value.codePointAt(i);
bytes.writeBytes(new String(Character.toChars(point)).getBytes(StandardCharsets.UTF_8));
i += Character.charCount(point);
}
}
return StandardCharsets.UTF_8.newDecoder().onMalformedInput(java.nio.charset.CodingErrorAction.REPORT).decode(java.nio.ByteBuffer.wrap(bytes.toByteArray())).toString();
}catch(IllegalArgumentException|java.nio.charset.CharacterCodingException e){throw new StoreException(400,"InvalidURI","Malformed URI encoding");}
} catch (IllegalArgumentException | java.nio.charset.CharacterCodingException e) {
throw new StoreException(400, "InvalidURI", "Malformed URI encoding");
}
}
static String encode(String value, boolean keepSlash) {
@@ -146,10 +157,17 @@ final class SigV4 {
return hmac(hmac(hmac(hmac(("AWS4"+secret).getBytes(StandardCharsets.UTF_8),date),region),"s3"),"aws4_request");
}
static byte[] hmac(byte[] key, String text) {
try { Mac mac=Mac.getInstance("HmacSHA256");mac.init(new SecretKeySpec(key,"HmacSHA256"));return mac.doFinal(text.getBytes(StandardCharsets.UTF_8)); }
try {
Mac mac = Mac.getInstance("HmacSHA256");
mac.init(new SecretKeySpec(key, "HmacSHA256"));
return mac.doFinal(text.getBytes(StandardCharsets.UTF_8));
}
catch (java.security.GeneralSecurityException e) { throw new IllegalStateException(e); }
}
static byte[] hash(byte[] data) { try {return MessageDigest.getInstance("SHA-256").digest(data);}catch(java.security.NoSuchAlgorithmException e){throw new IllegalStateException(e);} }
static byte[] hash(byte[] data) {
try { return MessageDigest.getInstance("SHA-256").digest(data); }
catch (java.security.NoSuchAlgorithmException e) { throw new IllegalStateException(e); }
}
static String hex(byte[] data) { return HexFormat.of().formatHex(data); }
private static void denied(String message) { throw new StoreException(403,"AccessDenied",message); }
}