*
* Amazon Lex provides both build and runtime endpoints. Each endpoint provides a set of operations (API). Your * conversational bot uses the runtime API to understand user utterances (user input text or voice). For example, * suppose a user says "I want pizza", your bot sends this input to Amazon Lex using the runtime API. Amazon Lex * recognizes that the user request is for the OrderPizza intent (one of the intents defined in the bot). Then Amazon * Lex engages in user conversation on behalf of the bot to elicit required information (slot values, such as pizza size * and crust type), and then performs fulfillment activity (that you configured when you created the bot). You use the * build-time API to create and manage your Amazon Lex bot. For a list of build-time operations, see the build-time API, * . *
*/ @ThreadSafe @Generated("com.amazonaws:aws-java-sdk-code-generator") public class AmazonLexRuntimeClient extends AmazonWebServiceClient implements AmazonLexRuntime { /** Provider for AWS credentials. */ private final AWSCredentialsProvider awsCredentialsProvider; private static final Log log = LogFactory.getLog(AmazonLexRuntime.class); /** Default signing name for the service. */ private static final String DEFAULT_SIGNING_NAME = "lex"; /** Client configuration factory providing ClientConfigurations tailored to this client */ protected static final ClientConfigurationFactory configFactory = new ClientConfigurationFactory(); private final AdvancedConfig advancedConfig; private static final com.amazonaws.protocol.json.SdkJsonProtocolFactory protocolFactory = new com.amazonaws.protocol.json.SdkJsonProtocolFactory( new JsonClientMetadata() .withProtocolVersion("1.1") .withSupportsCbor(false) .withSupportsIon(false) .withContentTypeOverride("application/json") .addErrorMetadata( new JsonErrorShapeMetadata().withErrorCode("ConflictException").withExceptionUnmarshaller( com.amazonaws.services.lexruntime.model.transform.ConflictExceptionUnmarshaller.getInstance())) .addErrorMetadata( new JsonErrorShapeMetadata().withErrorCode("NotFoundException").withExceptionUnmarshaller( com.amazonaws.services.lexruntime.model.transform.NotFoundExceptionUnmarshaller.getInstance())) .addErrorMetadata( new JsonErrorShapeMetadata().withErrorCode("InternalFailureException").withExceptionUnmarshaller( com.amazonaws.services.lexruntime.model.transform.InternalFailureExceptionUnmarshaller.getInstance())) .addErrorMetadata( new JsonErrorShapeMetadata().withErrorCode("RequestTimeoutException").withExceptionUnmarshaller( com.amazonaws.services.lexruntime.model.transform.RequestTimeoutExceptionUnmarshaller.getInstance())) .addErrorMetadata( new JsonErrorShapeMetadata().withErrorCode("DependencyFailedException").withExceptionUnmarshaller( com.amazonaws.services.lexruntime.model.transform.DependencyFailedExceptionUnmarshaller.getInstance())) .addErrorMetadata( new JsonErrorShapeMetadata().withErrorCode("UnsupportedMediaTypeException").withExceptionUnmarshaller( com.amazonaws.services.lexruntime.model.transform.UnsupportedMediaTypeExceptionUnmarshaller.getInstance())) .addErrorMetadata( new JsonErrorShapeMetadata().withErrorCode("NotAcceptableException").withExceptionUnmarshaller( com.amazonaws.services.lexruntime.model.transform.NotAcceptableExceptionUnmarshaller.getInstance())) .addErrorMetadata( new JsonErrorShapeMetadata().withErrorCode("BadRequestException").withExceptionUnmarshaller( com.amazonaws.services.lexruntime.model.transform.BadRequestExceptionUnmarshaller.getInstance())) .addErrorMetadata( new JsonErrorShapeMetadata().withErrorCode("LimitExceededException").withExceptionUnmarshaller( com.amazonaws.services.lexruntime.model.transform.LimitExceededExceptionUnmarshaller.getInstance())) .addErrorMetadata( new JsonErrorShapeMetadata().withErrorCode("BadGatewayException").withExceptionUnmarshaller( com.amazonaws.services.lexruntime.model.transform.BadGatewayExceptionUnmarshaller.getInstance())) .addErrorMetadata( new JsonErrorShapeMetadata().withErrorCode("LoopDetectedException").withExceptionUnmarshaller( com.amazonaws.services.lexruntime.model.transform.LoopDetectedExceptionUnmarshaller.getInstance())) .withBaseServiceExceptionClass(com.amazonaws.services.lexruntime.model.AmazonLexRuntimeException.class)); public static AmazonLexRuntimeClientBuilder builder() { return AmazonLexRuntimeClientBuilder.standard(); } /** * Constructs a new client to invoke service methods on Amazon Lex Runtime Service using the specified parameters. * ** All service calls made using this new client object are blocking, and will not return until the service call * completes. * * @param clientParams * Object providing client parameters. */ AmazonLexRuntimeClient(AwsSyncClientParams clientParams) { this(clientParams, false); } /** * Constructs a new client to invoke service methods on Amazon Lex Runtime Service using the specified parameters. * *
* All service calls made using this new client object are blocking, and will not return until the service call * completes. * * @param clientParams * Object providing client parameters. */ AmazonLexRuntimeClient(AwsSyncClientParams clientParams, boolean endpointDiscoveryEnabled) { super(clientParams); this.awsCredentialsProvider = clientParams.getCredentialsProvider(); this.advancedConfig = clientParams.getAdvancedConfig(); init(); } private void init() { setServiceNameIntern(DEFAULT_SIGNING_NAME); setEndpointPrefix(ENDPOINT_PREFIX); // calling this.setEndPoint(...) will also modify the signer accordingly setEndpoint("runtime.lex.us-east-1.amazonaws.com"); HandlerChainFactory chainFactory = new HandlerChainFactory(); requestHandler2s.addAll(chainFactory.newRequestHandlerChain("/com/amazonaws/services/lexruntime/request.handlers")); requestHandler2s.addAll(chainFactory.newRequestHandler2Chain("/com/amazonaws/services/lexruntime/request.handler2s")); requestHandler2s.addAll(chainFactory.getGlobalHandlers()); } /** *
* Removes session information for a specified bot, alias, and user ID. *
* * @param deleteSessionRequest * @return Result of the DeleteSession operation returned by the service. * @throws NotFoundException * The resource (such as the Amazon Lex bot or an alias) that is referred to is not found. * @throws BadRequestException * Request validation failed, there is no usable message in the context, or the bot build failed, is still * in progress, or contains unbuilt changes. * @throws LimitExceededException * Exceeded a limit. * @throws InternalFailureException * Internal service error. Retry the call. * @throws ConflictException * Two clients are using the same AWS account, Amazon Lex bot, and user ID. * @sample AmazonLexRuntime.DeleteSession * @see AWS API * Documentation */ @Override public DeleteSessionResult deleteSession(DeleteSessionRequest request) { request = beforeClientExecution(request); return executeDeleteSession(request); } @SdkInternalApi final DeleteSessionResult executeDeleteSession(DeleteSessionRequest deleteSessionRequest) { ExecutionContext executionContext = createExecutionContext(deleteSessionRequest); AWSRequestMetrics awsRequestMetrics = executionContext.getAwsRequestMetrics(); awsRequestMetrics.startEvent(Field.ClientExecuteTime); Request* Returns session information for a specified bot, alias, and user ID. *
* * @param getSessionRequest * @return Result of the GetSession operation returned by the service. * @throws NotFoundException * The resource (such as the Amazon Lex bot or an alias) that is referred to is not found. * @throws BadRequestException * Request validation failed, there is no usable message in the context, or the bot build failed, is still * in progress, or contains unbuilt changes. * @throws LimitExceededException * Exceeded a limit. * @throws InternalFailureException * Internal service error. Retry the call. * @sample AmazonLexRuntime.GetSession * @see AWS API * Documentation */ @Override public GetSessionResult getSession(GetSessionRequest request) { request = beforeClientExecution(request); return executeGetSession(request); } @SdkInternalApi final GetSessionResult executeGetSession(GetSessionRequest getSessionRequest) { ExecutionContext executionContext = createExecutionContext(getSessionRequest); AWSRequestMetrics awsRequestMetrics = executionContext.getAwsRequestMetrics(); awsRequestMetrics.startEvent(Field.ClientExecuteTime); Request* Sends user input (text or speech) to Amazon Lex. Clients use this API to send text and audio requests to Amazon * Lex at runtime. Amazon Lex interprets the user input using the machine learning model that it built for the bot. *
*
* The PostContent operation supports audio input at 8kHz and 16kHz. You can use 8kHz audio to achieve
* higher speech recognition accuracy in telephone audio applications.
*
* In response, Amazon Lex returns the next message to convey to the user. Consider the following example messages: *
*
* For a user input "I would like a pizza," Amazon Lex might return a response with a message eliciting slot data
* (for example, PizzaSize): "What size pizza would you like?".
*
* After the user provides all of the pizza order information, Amazon Lex might return a response with a message to * get user confirmation: "Order the pizza?". *
** After the user replies "Yes" to the confirmation prompt, Amazon Lex might return a conclusion statement: * "Thank you, your cheese pizza has been ordered.". *
*
* Not all Amazon Lex messages require a response from the user. For example, conclusion statements do not require a
* response. Some messages require only a yes or no response. In addition to the message, Amazon Lex
* provides additional context about the message in the response that you can use to enhance client behavior, such
* as displaying the appropriate client user interface. Consider the following examples:
*
* If the message is to elicit slot data, Amazon Lex returns the following context information: *
*
* x-amz-lex-dialog-state header set to ElicitSlot
*
* x-amz-lex-intent-name header set to the intent name in the current context
*
* x-amz-lex-slot-to-elicit header set to the slot name for which the message is eliciting
* information
*
* x-amz-lex-slots header set to a map of slots configured for the intent with their current values
*
* If the message is a confirmation prompt, the x-amz-lex-dialog-state header is set to
* Confirmation and the x-amz-lex-slot-to-elicit header is omitted.
*
* If the message is a clarification prompt configured for the intent, indicating that the user intent is not
* understood, the x-amz-dialog-state header is set to ElicitIntent and the
* x-amz-slot-to-elicit header is omitted.
*
* In addition, Amazon Lex also returns your application-specific sessionAttributes. For more
* information, see Managing Conversation
* Context.
*
PostContent API) has an invalid value.
* @throws NotAcceptableException
* The accept header in the request does not have a valid value.
* @throws RequestTimeoutException
* The input speech is too long.
* @throws DependencyFailedException
* One of the dependencies, such as AWS Lambda or Amazon Polly, threw an exception. For example,
* * If Amazon Lex does not have sufficient permissions to call a Lambda function. *
** If a Lambda function takes longer than 30 seconds to execute. *
*
* If a fulfillment Lambda function returns a Delegate dialog action without removing any slot
* values.
*
* Sends user input to Amazon Lex. Client applications can use this API to send requests to Amazon Lex at runtime. * Amazon Lex then interprets the user input using the machine learning model it built for the bot. *
*
* In response, Amazon Lex returns the next message to convey to the user an optional
* responseCard to display. Consider the following example messages:
*
* For a user input "I would like a pizza", Amazon Lex might return a response with a message eliciting slot data * (for example, PizzaSize): "What size pizza would you like?" *
** After the user provides all of the pizza order information, Amazon Lex might return a response with a message to * obtain user confirmation "Proceed with the pizza order?". *
** After the user replies to a confirmation prompt with a "yes", Amazon Lex might return a conclusion statement: * "Thank you, your cheese pizza has been ordered.". *
*
* Not all Amazon Lex messages require a user response. For example, a conclusion statement does not require a
* response. Some messages require only a "yes" or "no" user response. In addition to the message,
* Amazon Lex provides additional context about the message in the response that you might use to enhance client
* behavior, for example, to display the appropriate client user interface. These are the slotToElicit,
* dialogState, intentName, and slots fields in the response. Consider the
* following examples:
*
* If the message is to elicit slot data, Amazon Lex returns the following context information: *
*
* dialogState set to ElicitSlot
*
* intentName set to the intent name in the current context
*
* slotToElicit set to the slot name for which the message is eliciting information
*
* slots set to a map of slots, configured for the intent, with currently known values
*
* If the message is a confirmation prompt, the dialogState is set to ConfirmIntent and
* SlotToElicit is set to null.
*
* If the message is a clarification prompt (configured for the intent) that indicates that user intent is not
* understood, the dialogState is set to ElicitIntent and slotToElicit is set to null.
*
* In addition, Amazon Lex also returns your application-specific sessionAttributes. For more
* information, see Managing Conversation
* Context.
*
* If Amazon Lex does not have sufficient permissions to call a Lambda function. *
** If a Lambda function takes longer than 30 seconds to execute. *
*
* If a fulfillment Lambda function returns a Delegate dialog action without removing any slot
* values.
*
* Creates a new session or modifies an existing session with an Amazon Lex bot. Use this operation to enable your * application to set the state of the bot. *
** For more information, see Managing * Sessions. *
* * @param putSessionRequest * @return Result of the PutSession operation returned by the service. * @throws NotFoundException * The resource (such as the Amazon Lex bot or an alias) that is referred to is not found. * @throws BadRequestException * Request validation failed, there is no usable message in the context, or the bot build failed, is still * in progress, or contains unbuilt changes. * @throws LimitExceededException * Exceeded a limit. * @throws InternalFailureException * Internal service error. Retry the call. * @throws ConflictException * Two clients are using the same AWS account, Amazon Lex bot, and user ID. * @throws NotAcceptableException * The accept header in the request does not have a valid value. * @throws DependencyFailedException * One of the dependencies, such as AWS Lambda or Amazon Polly, threw an exception. For example, ** If Amazon Lex does not have sufficient permissions to call a Lambda function. *
** If a Lambda function takes longer than 30 seconds to execute. *
*
* If a fulfillment Lambda function returns a Delegate dialog action without removing any slot
* values.
*
* Response metadata is only cached for a limited period of time, so if you need to access this extra diagnostic
* information for an executed request, you should use this method to retrieve it as soon as possible after
* executing the request.
*
* @param request
* The originally executed request
*
* @return The response metadata for the specified request, or null if none is available.
*/
public ResponseMetadata getCachedResponseMetadata(AmazonWebServiceRequest request) {
return client.getResponseMetadataForRequest(request);
}
/**
* Normal invoke with authentication. Credentials are required and may be overriden at the request level.
**/
private