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com.alibaba.nls.client.protocol.dm.DialogAssistant Maven / Gradle / Ivy
package com.alibaba.nls.client.protocol.dm;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.TimeUnit;
import com.alibaba.nls.client.protocol.Constant;
import com.alibaba.nls.client.protocol.InputFormatEnum;
import com.alibaba.nls.client.protocol.NlsClient;
import com.alibaba.nls.client.protocol.SampleRateEnum;
import com.alibaba.nls.client.protocol.SpeechReqProtocol;
import com.alibaba.nls.client.util.IdGen;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import static com.alibaba.nls.client.protocol.SpeechReqProtocol.State.STATE_CLOSED;
import static com.alibaba.nls.client.protocol.SpeechReqProtocol.State.STATE_COMPLETE;
import static com.alibaba.nls.client.protocol.SpeechReqProtocol.State.STATE_CONNECTED;
import static com.alibaba.nls.client.protocol.SpeechReqProtocol.State.STATE_FAIL;
import static com.alibaba.nls.client.protocol.SpeechReqProtocol.State.STATE_REQUEST_CONFIRMED;
import static com.alibaba.nls.client.protocol.dm.UDSConstant.VALUE_NAMESPACE_DIALOG;
import static com.alibaba.nls.client.protocol.dm.UDSConstant.VALUE_NAME_DIALOG_STOP_RECOGNITION;
/**
* @author zhishen.ml
* @date 2017/11/24
*
* 对话助手
* 非线程安全
*/
public class DialogAssistant extends SpeechReqProtocol {
static Logger logger = LoggerFactory.getLogger(DialogAssistant.class);
private CountDownLatch asrCompleteLatch;
private CountDownLatch udsCompleteLatch;
private CountDownLatch readyLatch;
private List> parmas = new ArrayList>();
/**
* 如果没有设置format,默认为pcm
*/
private static final String DEFAULT_FORMAT = "pcm";
/**
* 如果没有设置sampleRate,默认为16000
*/
private static final Integer DEFAULT_SAMPLE_RATE = 16000;
public String getFormat() {
return (String)payload.get(Constant.PROP_ASR_FORMAT);
}
/**
* 输入音频编码格式
*
* @param format
*/
public void setFormat(InputFormatEnum format) {
payload.put(Constant.PROP_ASR_FORMAT, format.getName());
}
public Integer getSampleRate() {
return (Integer)payload.get(Constant.PROP_ASR_SAMPLE_RATE);
}
/**
* 输入音频采样率 8000 16000
*
* @param sampleRate
*/
public void setSampleRate(SampleRateEnum sampleRate) {
payload.put(Constant.PROP_ASR_SAMPLE_RATE, sampleRate.value);
}
/**
* 设置对话上下文id
*
* @param dialogId
*/
public void setSessionId(String dialogId) {
payload.put(UDSConstant.PROP_DIALOG_SESSION_ID, dialogId);
}
public DialogAssistant(NlsClient client, DialogAssistantListener listener) throws Exception{
this.conn = client.connect(listener);
payload = new HashMap();
header.put(Constant.PROP_NAMESPACE, VALUE_NAMESPACE_DIALOG);
header.put(Constant.PROP_NAME, UDSConstant.VALUE_NAME_DIALOG_START);
payload.put(Constant.PROP_ASR_FORMAT, DEFAULT_FORMAT);
payload.put("query_params", parmas);
payload.put(Constant.PROP_ASR_SAMPLE_RATE, DEFAULT_SAMPLE_RATE);
listener.setDialogAssistant(this);
state = STATE_CONNECTED;
}
/**
* 自己控制发送
*
* @param data
*/
public void send(byte[] data) {
state.checkSend();
try {
conn.sendBinary(data);
} catch (Exception e) {
logger.error("fail to send binary,current_task_id:{}", currentTaskId, e);
throw new RuntimeException(e);
}
}
/**
* 实时流发送
*
* @param ins
*/
public void send(InputStream ins) {
state.checkSend();
try {
byte[] bytes = new byte[8000];
int len = 0;
while ((len = ins.read(bytes)) > 0) {
conn.sendBinary(Arrays.copyOfRange(bytes, 0, len));
}
} catch (Exception e) {
logger.error("fail to send binary,current_task_id:{}", currentTaskId, e);
throw new RuntimeException(e);
}
}
/**
* 离线文件发送.当声音来自离线文件时,推荐使用此方法
*
* @param ins
* @param batchSize
* @param sleepInterval
*/
public void send(InputStream ins, int batchSize, int sleepInterval) {
state.checkSend();
try {
byte[] bytes = new byte[batchSize];
int len = 0;
while ((len = ins.read(bytes)) > 0) {
conn.sendBinary(Arrays.copyOfRange(bytes, 0, len));
Thread.sleep(sleepInterval);
}
} catch (Exception e) {
logger.error("fail to send binary,current_task_id:{}", currentTaskId, e);
throw new RuntimeException(e);
}
}
/**
* 内部调用方法
*/
void markReady() {
state = STATE_REQUEST_CONFIRMED;
if (readyLatch != null) {
readyLatch.countDown();
}
}
/**
* 内部调用方法
*/
void markAsrComplete() {
if (asrCompleteLatch != null) {
asrCompleteLatch.countDown();
}
}
/**
* 内部调用方法
*/
void markUdsComplete() {
state = STATE_COMPLETE;
if (udsCompleteLatch != null) {
udsCompleteLatch.countDown();
}
}
/**
* 内部调用方法
*/
public void markFail() {
state = STATE_FAIL;
if (readyLatch != null) {
readyLatch.countDown();
}
if (asrCompleteLatch != null) {
asrCompleteLatch.countDown();
}
if (udsCompleteLatch != null) {
udsCompleteLatch.countDown();
}
}
/**
* 内部调用方法
*/
void markClosed() {
state = STATE_CLOSED;
if (readyLatch != null) {
readyLatch.countDown();
}
if (asrCompleteLatch != null) {
asrCompleteLatch.countDown();
}
if (udsCompleteLatch != null) {
udsCompleteLatch.countDown();
}
}
/**
* 开始语音识别:发送识别请求,同步接收服务端确认
*
* @throws Exception
*/
public void start() throws Exception {
state.checkStart();
String taskId = IdGen.genId();
currentTaskId = taskId;
this.setTaskId(taskId);
conn.sendText(this.serialize());
readyLatch = new CountDownLatch(1);
asrCompleteLatch = new CountDownLatch(1);
udsCompleteLatch = new CountDownLatch(1);
boolean result = readyLatch.await(10, TimeUnit.SECONDS);
if (!result) {
String msg = String.format("timeout after 10 seconds waiting for start confirmation.task_id:%s",
currentTaskId);
logger.error(msg);
throw new Exception(msg);
}
}
public void stop() throws Exception {
state.checkStop();
conn.sendText(buildStopMessage());
boolean result = udsCompleteLatch.await(10, TimeUnit.SECONDS);
if (!result) {
String msg = String.format("timeout after 10 seconds waiting for complete confirmation.task_id:%s",
currentTaskId);
logger.error(msg);
throw new Exception(msg);
}
}
protected String buildStopMessage(){
SpeechReqProtocol req = new SpeechReqProtocol();
req.setAppKey(getAppKey());
req.header.put(Constant.PROP_NAMESPACE, VALUE_NAMESPACE_DIALOG);
req.header.put(Constant.PROP_NAME, VALUE_NAME_DIALOG_STOP_RECOGNITION);
req.header.put(Constant.PROP_TASK_ID, currentTaskId);
return req.serialize();
}
/**
* 设置对话相关参数
*
* @param key
* @param value
* @return
*/
public DialogAssistant addDialogParam(String key, Object value) {
Map param = new HashMap(2);
param.put("name", key);
param.put("value", value);
parmas.add(param);
return this;
}
public void query() throws Exception {
header.put(Constant.PROP_NAME, UDSConstant.VALUE_NAME_DIALOG_TEXT);
String taskId = IdGen.genId();
currentTaskId = taskId;
this.setTaskId(taskId);
conn.sendText(this.serialize());
udsCompleteLatch = new CountDownLatch(1);
boolean result = udsCompleteLatch.await(10, TimeUnit.SECONDS);
if (!result) {
String msg = String.format("timeout after 10 seconds waiting for uds complete.task_id:%s",
currentTaskId);
logger.error(msg);
throw new Exception(msg);
}
}
/**
* 设置对话上下文
*
* @param context
*/
public void setDialogContext(String context) {
payload.put(UDSConstant.PROP_DIALOG_QUERY_CONTEXT, context);
}
/**
* 关闭连接
*/
public void close() {
conn.close();
}
}
