YuguClient.java
package com.shengzhiai.yugu;
import com.fasterxml.jackson.core.type.TypeReference;
import com.fasterxml.jackson.databind.JsonNode;
import com.shengzhiai.yugu.audio.AudioAnalysis;
import com.shengzhiai.yugu.audio.AudioSource;
import com.shengzhiai.yugu.errors.AudioQualityException;
import com.shengzhiai.yugu.errors.ErrorTable;
import com.shengzhiai.yugu.errors.WarningCode;
import com.shengzhiai.yugu.errors.YuguErrors;
import com.shengzhiai.yugu.errors.YuguException;
import com.shengzhiai.yugu.internal.Auth;
import com.shengzhiai.yugu.internal.DaemonThreadFactory;
import com.shengzhiai.yugu.internal.HttpEngine;
import com.shengzhiai.yugu.internal.JdkWsTransport;
import com.shengzhiai.yugu.internal.Json;
import com.shengzhiai.yugu.internal.Log;
import com.shengzhiai.yugu.internal.Multipart;
import com.shengzhiai.yugu.internal.PercentEncoding;
import com.shengzhiai.yugu.internal.ResultParser;
import com.shengzhiai.yugu.internal.WsTransport;
import com.shengzhiai.yugu.model.CompatConfig;
import com.shengzhiai.yugu.model.EvalResult;
import com.shengzhiai.yugu.model.EvaluateConfig;
import com.shengzhiai.yugu.model.ReportResult;
import com.shengzhiai.yugu.model.TtsRequest;
import com.shengzhiai.yugu.model.TtsResult;
import com.shengzhiai.yugu.model.Warning;
import java.io.File;
import java.io.InputStream;
import java.lang.reflect.Method;
import java.net.http.HttpClient;
import java.nio.file.Path;
import java.time.Duration;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import java.util.Random;
import java.util.Set;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.ScheduledExecutorService;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.atomic.AtomicBoolean;
import java.util.concurrent.atomic.AtomicInteger;
/**
* Client of the Yugu speech evaluation platform. Thread safe; create one per application and close
* it when done.
*
* <pre>{@code
* try (YuguClient client = YuguClient.builder().apiKey(appKey, secretKey).build()) {
* EvalResult r = client.evaluate(Path.of("audio.wav"),
* new EvaluateConfig(EvaluateConfig.CORE_SENTENCE, "今天天气很好", "zh-CN"));
* System.out.println(r.getOverall());
* }
* }</pre>
*
* <p>Write calls ({@code evaluate}, {@code evaluateCompat}, {@code tts}) carry an
* {@code Idempotency-Key}; retries reuse it, so the platform bills a submission once. Errors are
* {@link YuguException} subclasses. After {@link #close()} every call throws
* {@code IllegalSessionStateException} (90004).
*/
public final class YuguClient implements AutoCloseable {
/** SDK version. */
public static final String VERSION = "2.1.0";
/** Default User-Agent. */
public static final String USER_AGENT = "yugu-java-sdk/" + VERSION;
/** Core types of the native endpoints. */
public static final List<String> NATIVE_CORE_TYPES = Collections.unmodifiableList(Arrays.asList(
"word", "sentence", "passage", "connected", "open", "alpha", "pinyin"));
/** Core types of the compat endpoints. */
public static final List<String> COMPAT_CORE_TYPES = CompatConfig.CORE_TYPES;
private static final String TAG = "client";
private static final AtomicInteger INSTANCES = new AtomicInteger();
private final ClientOptions options;
private final Log log;
private final String threadPrefix;
private final ExecutorService httpExecutor;
private final ExecutorService callbackPool;
private final ScheduledExecutorService scheduler;
private final HttpClient http;
private final HttpEngine engine;
private final StreamContext streamContext;
private final Set<StreamSession> sessions = ConcurrentHashMap.newKeySet();
private final AtomicBoolean closed = new AtomicBoolean();
/**
* @param options configuration
*/
public YuguClient(ClientOptions options) {
this.options = options;
this.log = new Log(options.getLogLevel(), options.getLogger());
this.threadPrefix = "yugu-" + INSTANCES.incrementAndGet();
this.httpExecutor = Executors.newCachedThreadPool(new DaemonThreadFactory(threadPrefix + "-http"));
this.callbackPool = Executors.newCachedThreadPool(new DaemonThreadFactory(threadPrefix + "-callback"));
this.scheduler = Executors.newSingleThreadScheduledExecutor(new DaemonThreadFactory(threadPrefix + "-timer"));
this.http = HttpClient.newBuilder()
.connectTimeout(Duration.ofMillis(options.getConnectTimeoutMs()))
.version(HttpClient.Version.HTTP_1_1)
.followRedirects(HttpClient.Redirect.NORMAL)
.executor(httpExecutor)
.build();
Random random = options.getRandom() != null ? options.getRandom() : new Random();
Auth auth = new Auth(options.getAppKey(), options.getSecretKey(), options.getToken());
this.engine = new HttpEngine(http,
new HttpEngine.Settings(options.getBaseUrl(), options.getUserAgent(), options.getReadTimeoutMs(),
options.getTotalTimeoutMs(), options.getRetry(), options.isAutoIdempotencyKey()),
auth, log, options.getEventListener(), random);
WsTransport transport = options.getTransport() != null ? options.getTransport() : new JdkWsTransport(http);
this.streamContext = new StreamContext(options, transport, auth, scheduler, callbackPool, log,
options.getEventListener(), random, sessions::remove);
log.debug(TAG, "created " + options);
}
/**
* @param options configuration
* @return a new client
*/
public static YuguClient create(ClientOptions options) {
return new YuguClient(options);
}
/** @return a builder with the defaults */
public static Builder builder() {
return new Builder();
}
/** @return configuration */
public ClientOptions getOptions() {
return options;
}
// ======================================================================== native evaluation
/**
* Evaluates WAV or MP3 bytes with the native endpoint {@code POST /api/v1/evaluate}.
*
* @param audio audio bytes
* @param config parameters, coreType and referenceText required
* @return result
* @throws YuguException on failure, see the subclasses
*/
public EvalResult evaluate(byte[] audio, EvaluateConfig config) throws YuguException {
return evaluate(AudioSource.of(audio), null, config, null);
}
/**
* @param audio audio bytes
* @param config parameters
* @param options per call options
* @return result
* @throws YuguException on failure
*/
public EvalResult evaluate(byte[] audio, EvaluateConfig config, RequestOptions options) throws YuguException {
return evaluate(AudioSource.of(audio), null, config, options);
}
/**
* @param audio audio file
* @param config parameters
* @return result
* @throws YuguException on failure
*/
public EvalResult evaluate(File audio, EvaluateConfig config) throws YuguException {
return evaluate(AudioSource.of(audio), null, config, null);
}
/**
* @param audio audio file
* @param config parameters
* @param options per call options
* @return result
* @throws YuguException on failure
*/
public EvalResult evaluate(File audio, EvaluateConfig config, RequestOptions options) throws YuguException {
return evaluate(AudioSource.of(audio), null, config, options);
}
/**
* @param audio audio file
* @param config parameters
* @return result
* @throws YuguException on failure
*/
public EvalResult evaluate(Path audio, EvaluateConfig config) throws YuguException {
return evaluate(AudioSource.of(audio), null, config, null);
}
/**
* @param audio audio file
* @param config parameters
* @param options per call options
* @return result
* @throws YuguException on failure
*/
public EvalResult evaluate(Path audio, EvaluateConfig config, RequestOptions options) throws YuguException {
return evaluate(AudioSource.of(audio), null, config, options);
}
/**
* @param audio stream with WAV or MP3 content, read to the end and not closed
* @param config parameters
* @return result
* @throws YuguException on failure
*/
public EvalResult evaluate(InputStream audio, EvaluateConfig config) throws YuguException {
return evaluate(AudioSource.of(audio), null, config, null);
}
/**
* @param audio stream with WAV or MP3 content, read to the end and not closed
* @param config parameters
* @param options per call options
* @return result
* @throws YuguException on failure
*/
public EvalResult evaluate(InputStream audio, EvaluateConfig config, RequestOptions options) throws YuguException {
return evaluate(AudioSource.of(audio), null, config, options);
}
/**
* @param audio audio source, for example {@link AudioSource#pcm(byte[], int)}
* @param config parameters
* @return result
* @throws YuguException on failure
*/
public EvalResult evaluate(AudioSource audio, EvaluateConfig config) throws YuguException {
return evaluate(audio, null, config, null);
}
/**
* Full form: audio, optional image for open questions with {@code taskType=picture}, parameters
* and per call options.
*
* @param audio audio source
* @param image image source, may be null
* @param config parameters
* @param options per call options, may be null
* @return result
* @throws YuguException on failure
*/
public EvalResult evaluate(AudioSource audio, AudioSource image, EvaluateConfig config, RequestOptions options)
throws YuguException {
ensureOpen();
if (audio == null) {
throw invalid("audio is required");
}
if (config == null || isEmpty(config.getCoreType()) || isEmpty(config.getReferenceText())) {
throw invalid("config.coreType and config.referenceText are required");
}
AudioSource.Loaded a = audio.load();
List<Warning> local = precheck(a);
String configJson = Json.write(config);
Multipart.Builder mb = Multipart.builder()
.json("config", configJson)
.file("audio", a.getFileName(), a.getContentType(), a.getData());
if (image != null) {
AudioSource.Loaded img = image.load();
mb.file("image", img.getFileName() == null || img.getFileName().startsWith("audio.") ? "image.jpg" : img.getFileName(),
"application/octet-stream", img.getData());
}
Multipart body = mb.build();
Map<String, String> sign = Collections.singletonMap("config", configJson);
return engine.execute(new MultipartCall("evaluate", "/api/v1/evaluate", body, sign, local), options);
}
// ======================================================================== compat evaluation
/**
* Evaluates with the Shengtong compatible endpoint {@code POST /{coreType}}.
*
* @param audio audio bytes
* @param config compat parameters
* @return result
* @throws YuguException on failure
*/
public EvalResult evaluateCompat(byte[] audio, CompatConfig config) throws YuguException {
return evaluateCompat(AudioSource.of(audio), config, null);
}
/**
* @param audio audio bytes
* @param config compat parameters
* @param options per call options
* @return result
* @throws YuguException on failure
*/
public EvalResult evaluateCompat(byte[] audio, CompatConfig config, RequestOptions options) throws YuguException {
return evaluateCompat(AudioSource.of(audio), config, options);
}
/**
* @param audio audio file
* @param config compat parameters
* @return result
* @throws YuguException on failure
*/
public EvalResult evaluateCompat(File audio, CompatConfig config) throws YuguException {
return evaluateCompat(AudioSource.of(audio), config, null);
}
/**
* @param audio audio file
* @param config compat parameters
* @param options per call options
* @return result
* @throws YuguException on failure
*/
public EvalResult evaluateCompat(File audio, CompatConfig config, RequestOptions options) throws YuguException {
return evaluateCompat(AudioSource.of(audio), config, options);
}
/**
* @param audio audio file
* @param config compat parameters
* @return result
* @throws YuguException on failure
*/
public EvalResult evaluateCompat(Path audio, CompatConfig config) throws YuguException {
return evaluateCompat(AudioSource.of(audio), config, null);
}
/**
* @param audio audio file
* @param config compat parameters
* @param options per call options
* @return result
* @throws YuguException on failure
*/
public EvalResult evaluateCompat(Path audio, CompatConfig config, RequestOptions options) throws YuguException {
return evaluateCompat(AudioSource.of(audio), config, options);
}
/**
* @param audio stream, read to the end and not closed
* @param config compat parameters
* @return result
* @throws YuguException on failure
*/
public EvalResult evaluateCompat(InputStream audio, CompatConfig config) throws YuguException {
return evaluateCompat(AudioSource.of(audio), config, null);
}
/**
* @param audio stream, read to the end and not closed
* @param config compat parameters
* @param options per call options
* @return result
* @throws YuguException on failure
*/
public EvalResult evaluateCompat(InputStream audio, CompatConfig config, RequestOptions options) throws YuguException {
return evaluateCompat(AudioSource.of(audio), config, options);
}
/**
* @param audio audio source
* @param config compat parameters
* @param options per call options, may be null
* @return result
* @throws YuguException on failure
*/
public EvalResult evaluateCompat(AudioSource audio, CompatConfig config, RequestOptions options) throws YuguException {
ensureOpen();
if (audio == null) {
throw invalid("audio is required");
}
String coreType = checkCompatCoreType(config);
AudioSource.Loaded a = audio.load();
List<Warning> local = precheck(a);
Map<String, String> fields = config.toFormFields();
Multipart.Builder mb = Multipart.builder();
for (Map.Entry<String, String> f : fields.entrySet()) {
mb.field(f.getKey(), f.getValue());
}
mb.file("audio", a.getFileName(), a.getContentType(), a.getData());
return engine.execute(new MultipartCall("evaluateCompat", "/" + coreType, mb.build(), fields, local), options);
}
// ======================================================================== tts and report
/**
* Synthesises speech with {@code POST /api/v1/tts/generate}.
*
* @param request request, text required
* @return result with the audio URL
* @throws YuguException on failure
*/
public TtsResult tts(TtsRequest request) throws YuguException {
return tts(request, null);
}
/**
* @param request request
* @param options per call options, may be null
* @return result
* @throws YuguException on failure
*/
public TtsResult tts(TtsRequest request, RequestOptions options) throws YuguException {
ensureOpen();
if (request == null || isEmpty(request.getText())) {
throw invalid("tts text is required");
}
Map<String, Object> fields = request.toBody();
byte[] body = Json.writePlainObject(fields).getBytes(java.nio.charset.StandardCharsets.UTF_8);
Map<String, String> sign = Json.scalarFields(fields);
return engine.execute(new HttpEngine.Call<TtsResult>() {
@Override
public String op() {
return "tts";
}
@Override
public String method() {
return "POST";
}
@Override
public String path() {
return "/api/v1/tts/generate";
}
@Override
public boolean isWrite() {
return true;
}
@Override
public byte[] body() {
return body;
}
@Override
public String contentType() {
return "application/json; charset=utf-8";
}
@Override
public Map<String, String> signParams() {
return sign;
}
@Override
public TtsResult parse(HttpEngine.Response response, String key, int attempts) {
JsonNode root = readEnvelope(response, key, attempts);
JsonNode data = root.get("data");
if (data == null || !data.isObject()) {
throw protocol("tts response has no data object", response, key, attempts);
}
TtsResult r = ResultParser.parseTts(data, YuguClient.this.options.getBaseUrl());
r.setRaw(root);
r.setIdempotencyKey(key);
r.setReplayed(response.replayed());
r.setAttempts(attempts);
return r;
}
}, options);
}
/**
* Queries the report of a record with {@code GET /api/v1/report/{recordId}}. Naturally idempotent,
* retried without a key.
*
* @param recordId record id from {@link EvalResult#getRecordId()}
* @return report
* @throws YuguException on failure
*/
public ReportResult getReport(String recordId) throws YuguException {
return getReport(recordId, null);
}
/**
* @param recordId record id
* @param options per call options, may be null
* @return report
* @throws YuguException on failure
*/
public ReportResult getReport(String recordId, RequestOptions options) throws YuguException {
ensureOpen();
if (isEmpty(recordId)) {
throw invalid("recordId is required");
}
String path = "/api/v1/report/" + PercentEncoding.encode(recordId);
return engine.execute(new HttpEngine.Call<ReportResult>() {
@Override
public String op() {
return "getReport";
}
@Override
public String method() {
return "GET";
}
@Override
public String path() {
return path;
}
@Override
public boolean isWrite() {
return false;
}
@Override
public byte[] body() {
return null;
}
@Override
public String contentType() {
return null;
}
@Override
public Map<String, String> signParams() {
return Collections.emptyMap();
}
@Override
public ReportResult parse(HttpEngine.Response response, String key, int attempts) {
JsonNode root = readEnvelope(response, key, attempts);
return new ReportResult(recordId, root.get("data"), root, attempts);
}
}, options);
}
// ======================================================================== streams
/**
* Opens a native stream {@code wss://host/api/v1/ws/evaluate}. Returns at once; the session
* connects in the background and queues audio until the server session started. With
* {@link EvaluateConfig#realtimeFeedback(boolean)} the reading progress arrives through
* {@link StreamListener#onPartial}.
*
* @param config parameters, coreType and referenceText required
* @param listener callbacks
* @return session
* @throws YuguException {@code InvalidParameterException} for bad arguments, 90004 after close
*/
public StreamSession streamEvaluate(EvaluateConfig config, StreamListener listener) throws YuguException {
return streamEvaluate(config, listener, null);
}
/**
* @param config parameters
* @param listener callbacks
* @param options per session options, may be null
* @return session
* @throws YuguException for bad arguments or after close
*/
public StreamSession streamEvaluate(EvaluateConfig config, StreamListener listener, StreamOptions options)
throws YuguException {
ensureOpen();
if (config == null || isEmpty(config.getCoreType()) || isEmpty(config.getReferenceText())) {
throw invalid("config.coreType and config.referenceText are required");
}
Map<String, Object> fields = Json.MAPPER.convertValue(config, new TypeReference<LinkedHashMap<String, Object>>() {
});
if (config.isRealtimeFeedback()) {
// only when requested: the default start frame stays the one of 2.0.0
fields.put("realtimeFeedback", Boolean.TRUE);
}
return open(StreamSession.Kind.NATIVE, "/api/v1/ws/evaluate", fields, listener, options);
}
/**
* Opens a compat stream {@code wss://host/{coreType}}. With
* {@link CompatConfig#realtimeFeedback(boolean)} the reading progress arrives through
* {@link StreamListener#onPartial}.
*
* @param config compat parameters
* @param listener callbacks
* @return session
* @throws YuguException for bad arguments or after close
*/
public StreamSession streamEvaluateCompat(CompatConfig config, StreamListener listener) throws YuguException {
return streamEvaluateCompat(config, listener, null);
}
/**
* @param config compat parameters
* @param listener callbacks
* @param options per session options, may be null
* @return session
* @throws YuguException for bad arguments or after close
*/
public StreamSession streamEvaluateCompat(CompatConfig config, StreamListener listener, StreamOptions options)
throws YuguException {
ensureOpen();
String coreType = checkCompatCoreType(config);
return open(StreamSession.Kind.COMPAT, "/" + coreType, config.toParameterFrame(), listener, options);
}
private StreamSession open(StreamSession.Kind kind, String path, Map<String, Object> fields, StreamListener listener,
StreamOptions options) {
if (listener == null) {
throw invalid("listener is required");
}
StreamSession s = new StreamSession(streamContext, kind, path, fields, listener, options);
sessions.add(s);
if (closed.get()) {
sessions.remove(s);
throw closedError();
}
s.start();
return s;
}
// ======================================================================== lifecycle
/** @return true after {@link #close()} */
public boolean isClosed() {
return closed.get();
}
/** @return number of stream sessions that have not reached CLOSED */
public int getOpenSessionCount() {
return sessions.size();
}
/**
* Closes the client: cancels open stream sessions (they end with CANCELLED and onClosed), aborts
* running REST attempts (they throw 90004), and releases the threads. Idempotent.
*/
@Override
public void close() {
if (!closed.compareAndSet(false, true)) {
return;
}
log.debug(TAG, "closing");
engine.close();
List<StreamSession> open = new ArrayList<>(sessions);
for (StreamSession s : open) {
s.cancel();
}
boolean onOwnThread = Thread.currentThread().getName().startsWith(threadPrefix + "-");
if (!onOwnThread) {
for (StreamSession s : open) {
try {
s.awaitClosed(2, TimeUnit.SECONDS);
} catch (InterruptedException e) {
Thread.currentThread().interrupt();
break;
}
}
}
scheduler.shutdownNow();
callbackPool.shutdown();
httpExecutor.shutdown();
shutdownHttpClient();
}
private void shutdownHttpClient() {
// Java 21 added HttpClient.shutdownNow(); call it when present, the threads end at once.
try {
Method m = HttpClient.class.getMethod("shutdownNow");
m.invoke(http);
} catch (ReflectiveOperationException | RuntimeException ignored) {
// Java 11 to 20: the selector thread ends when the client is collected
}
}
private void ensureOpen() {
if (closed.get()) {
throw closedError();
}
}
private static YuguException closedError() {
return YuguErrors.local(ErrorTable.CLIENT_CLOSED, "client is closed", null);
}
// ======================================================================== helpers
private List<Warning> precheck(AudioSource.Loaded a) {
AudioPrecheckMode mode = options.getAudioPrecheck();
if (mode == AudioPrecheckMode.OFF) {
return Collections.emptyList();
}
AudioAnalysis an = a.analyze();
if (mode == AudioPrecheckMode.REJECT && !an.getRejectingIssues().isEmpty()) {
Warning w = an.getRejectingIssues().get(0);
log.warn("precheck", "rejected before upload: " + w.getCode() + " " + w.getMessage(), null);
throw YuguErrors.local(w.getCode(), w.getMessage(), null);
}
for (Warning w : an.getIssues()) {
log.warn("precheck", w.getCode() + " " + w.getMessage(), null);
}
return an.getIssues();
}
private String checkCompatCoreType(CompatConfig config) {
if (config == null || isEmpty(config.getCoreType())) {
throw invalid("config.coreType is required");
}
if (!COMPAT_CORE_TYPES.contains(config.getCoreType())) {
throw invalid("unknown compat coreType " + config.getCoreType() + ", expected one of " + COMPAT_CORE_TYPES);
}
return config.getCoreType();
}
private static boolean isEmpty(String s) {
return s == null || s.trim().isEmpty();
}
private static YuguException invalid(String message) {
return YuguErrors.local(ErrorTable.INVALID_ARGUMENT, message, null);
}
private static YuguException protocol(String message, HttpEngine.Response response, String key, int attempts) {
return YuguErrors.create(YuguErrors.local(ErrorTable.PROTOCOL_ERROR, message, null).toDetails().toBuilder()
.httpStatus(response.status()).rawBody(response.bodyText()).idempotencyKey(key).attempts(attempts).build());
}
/** Parses a 2xx body and maps a non-zero {@code code} without a result to an error. */
private static JsonNode readJson(HttpEngine.Response response, String key, int attempts) {
try {
return Json.read(response.body());
} catch (YuguException e) {
throw protocol(e.getRawMessage(), response, key, attempts);
}
}
private static JsonNode readEnvelope(HttpEngine.Response response, String key, int attempts) {
JsonNode root = readJson(response, key, attempts);
JsonNode code = root.get("code");
if (code != null && code.isNumber() && code.asInt() != 0) {
throw YuguErrors.fromHttpResponse(response.status(), response.bodyText(), -1, key, attempts);
}
return root;
}
/** Multipart evaluation call, native or compat. */
private final class MultipartCall implements HttpEngine.Call<EvalResult> {
private final String op;
private final String path;
private final Multipart body;
private final Map<String, String> sign;
private final List<Warning> localWarnings;
MultipartCall(String op, String path, Multipart body, Map<String, String> sign, List<Warning> localWarnings) {
this.op = op;
this.path = path;
this.body = body;
this.sign = sign;
this.localWarnings = localWarnings;
}
@Override
public String op() {
return op;
}
@Override
public String method() {
return "POST";
}
@Override
public String path() {
return path;
}
@Override
public boolean isWrite() {
return true;
}
@Override
public byte[] body() {
return body.body();
}
@Override
public String contentType() {
return body.contentType();
}
@Override
public Map<String, String> signParams() {
return sign;
}
@Override
public EvalResult parse(HttpEngine.Response response, String key, int attempts) {
JsonNode root = readJson(response, key, attempts);
JsonNode code = root.get("code");
if (code != null && code.isNumber() && code.asInt() != 0 && !root.has("result")) {
throw YuguErrors.fromHttpResponse(response.status(), response.bodyText(), -1, key, attempts);
}
EvalResult r;
try {
r = ResultParser.parseEvaluation(root);
} catch (YuguException e) {
throw protocol(e.getRawMessage(), response, key, attempts);
}
r.setIdempotencyKey(key);
r.setReplayed(r.isReplayed() || response.replayed());
r.setAttempts(attempts);
r.setLocalWarnings(localWarnings);
if (options.isStrictAudio() && r.hasWarning(WarningCode.NO_VALID_AUDIO)) {
AudioQualityException e = YuguErrors.fromWarning(WarningCode.NO_VALID_AUDIO.getCode(), null, r);
throw e;
}
return r;
}
}
/** Builder of {@link YuguClient}; every setter of {@link ClientOptions.BaseBuilder} is available. */
public static final class Builder extends ClientOptions.BaseBuilder<Builder> {
Builder() {
}
/** @return the options this builder would create */
public ClientOptions buildOptions() {
return super.buildOptions();
}
/** @return a new client */
public YuguClient build() {
return new YuguClient(buildOptions());
}
}
}