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api.go
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// Code generated by private/model/cli/gen-api/main.go. DO NOT EDIT.
package transcribestreamingservice
import (
"bytes"
"fmt"
"io"
"sync"
"time"
"github.com/aws/aws-sdk-go/aws"
"github.com/aws/aws-sdk-go/aws/awserr"
"github.com/aws/aws-sdk-go/aws/awsutil"
"github.com/aws/aws-sdk-go/aws/client"
"github.com/aws/aws-sdk-go/aws/request"
"github.com/aws/aws-sdk-go/aws/signer/v4"
"github.com/aws/aws-sdk-go/private/protocol"
"github.com/aws/aws-sdk-go/private/protocol/eventstream"
"github.com/aws/aws-sdk-go/private/protocol/eventstream/eventstreamapi"
"github.com/aws/aws-sdk-go/private/protocol/rest"
"github.com/aws/aws-sdk-go/private/protocol/restjson"
)
const opStartMedicalStreamTranscription = "StartMedicalStreamTranscription"
// StartMedicalStreamTranscriptionRequest generates a "aws/request.Request" representing the
// client's request for the StartMedicalStreamTranscription operation. The "output" return
// value will be populated with the request's response once the request completes
// successfully.
//
// Use "Send" method on the returned Request to send the API call to the service.
// the "output" return value is not valid until after Send returns without error.
//
// See StartMedicalStreamTranscription for more information on using the StartMedicalStreamTranscription
// API call, and error handling.
//
// This method is useful when you want to inject custom logic or configuration
// into the SDK's request lifecycle. Such as custom headers, or retry logic.
//
//
// // Example sending a request using the StartMedicalStreamTranscriptionRequest method.
// req, resp := client.StartMedicalStreamTranscriptionRequest(params)
//
// err := req.Send()
// if err == nil { // resp is now filled
// fmt.Println(resp)
// }
//
// See also, https://docs.aws.amazon.com/goto/WebAPI/transcribe-streaming-2017-10-26/StartMedicalStreamTranscription
func (c *TranscribeStreamingService) StartMedicalStreamTranscriptionRequest(input *StartMedicalStreamTranscriptionInput) (req *request.Request, output *StartMedicalStreamTranscriptionOutput) {
op := &request.Operation{
Name: opStartMedicalStreamTranscription,
HTTPMethod: "POST",
HTTPPath: "/medical-stream-transcription",
}
if input == nil {
input = &StartMedicalStreamTranscriptionInput{}
}
output = &StartMedicalStreamTranscriptionOutput{}
req = c.newRequest(op, input, output)
req.Handlers.UnmarshalMeta.PushBack(
protocol.RequireHTTPMinProtocol{Major: 2}.Handler,
)
es := NewStartMedicalStreamTranscriptionEventStream()
output.eventStream = es
req.Handlers.Sign.PushFront(es.setupInputPipe)
req.Handlers.UnmarshalError.PushBackNamed(request.NamedHandler{
Name: "InputPipeCloser",
Fn: func(r *request.Request) {
err := es.closeInputPipe()
if err != nil {
r.Error = awserr.New(eventstreamapi.InputWriterCloseErrorCode, err.Error(), r.Error)
}
},
})
req.Handlers.Build.PushBack(request.WithSetRequestHeaders(map[string]string{
"Content-Type": "application/vnd.amazon.eventstream",
"X-Amz-Content-Sha256": "STREAMING-AWS4-HMAC-SHA256-EVENTS",
}))
req.Handlers.Build.Swap(restjson.BuildHandler.Name, rest.BuildHandler)
req.Handlers.Send.Swap(client.LogHTTPRequestHandler.Name, client.LogHTTPRequestHeaderHandler)
req.Handlers.Unmarshal.PushBack(es.runInputStream)
req.Handlers.Send.Swap(client.LogHTTPResponseHandler.Name, client.LogHTTPResponseHeaderHandler)
req.Handlers.Unmarshal.Swap(restjson.UnmarshalHandler.Name, rest.UnmarshalHandler)
req.Handlers.Unmarshal.PushBack(es.runOutputStream)
req.Handlers.Unmarshal.PushBack(es.runOnStreamPartClose)
return
}
// StartMedicalStreamTranscription API operation for Amazon Transcribe Streaming Service.
//
// Starts a bidirectional HTTP/2 stream where audio is streamed to Amazon Transcribe
// Medical and the transcription results are streamed to your application.
//
// Returns awserr.Error for service API and SDK errors. Use runtime type assertions
// with awserr.Error's Code and Message methods to get detailed information about
// the error.
//
// See the AWS API reference guide for Amazon Transcribe Streaming Service's
// API operation StartMedicalStreamTranscription for usage and error information.
//
// Returned Error Types:
// * BadRequestException
// One or more arguments to the StartStreamTranscription or StartMedicalStreamTranscription
// operation was invalid. For example, MediaEncoding was not set to a valid
// encoding, or LanguageCode was not set to a valid code. Check the parameters
// and try your request again.
//
// * LimitExceededException
// You have exceeded the maximum number of concurrent transcription streams,
// are starting transcription streams too quickly, or the maximum audio length
// of 4 hours. Wait until a stream has finished processing, or break your audio
// stream into smaller chunks and try your request again.
//
// * InternalFailureException
// A problem occurred while processing the audio. Amazon Transcribe or Amazon
// Transcribe Medical terminated processing. Try your request again.
//
// * ConflictException
// A new stream started with the same session ID. The current stream has been
// terminated.
//
// * ServiceUnavailableException
// Service is currently unavailable. Try your request later.
//
// See also, https://docs.aws.amazon.com/goto/WebAPI/transcribe-streaming-2017-10-26/StartMedicalStreamTranscription
func (c *TranscribeStreamingService) StartMedicalStreamTranscription(input *StartMedicalStreamTranscriptionInput) (*StartMedicalStreamTranscriptionOutput, error) {
req, out := c.StartMedicalStreamTranscriptionRequest(input)
return out, req.Send()
}
// StartMedicalStreamTranscriptionWithContext is the same as StartMedicalStreamTranscription with the addition of
// the ability to pass a context and additional request options.
//
// See StartMedicalStreamTranscription for details on how to use this API operation.
//
// The context must be non-nil and will be used for request cancellation. If
// the context is nil a panic will occur. In the future the SDK may create
// sub-contexts for http.Requests. See https://golang.org/pkg/context/
// for more information on using Contexts.
func (c *TranscribeStreamingService) StartMedicalStreamTranscriptionWithContext(ctx aws.Context, input *StartMedicalStreamTranscriptionInput, opts ...request.Option) (*StartMedicalStreamTranscriptionOutput, error) {
req, out := c.StartMedicalStreamTranscriptionRequest(input)
req.SetContext(ctx)
req.ApplyOptions(opts...)
return out, req.Send()
}
var _ awserr.Error
// StartMedicalStreamTranscriptionEventStream provides the event stream handling for the StartMedicalStreamTranscription.
//
// For testing and mocking the event stream this type should be initialized via
// the NewStartMedicalStreamTranscriptionEventStream constructor function. Using the functional options
// to pass in nested mock behavior.
type StartMedicalStreamTranscriptionEventStream struct {
// Writer is the EventStream writer for the AudioStream
// events. This value is automatically set by the SDK when the API call is made
// Use this member when unit testing your code with the SDK to mock out the
// EventStream Writer.
//
// Must not be nil.
Writer AudioStreamWriter
inputWriter io.WriteCloser
// Reader is the EventStream reader for the MedicalTranscriptResultStream
// events. This value is automatically set by the SDK when the API call is made
// Use this member when unit testing your code with the SDK to mock out the
// EventStream Reader.
//
// Must not be nil.
Reader MedicalTranscriptResultStreamReader
outputReader io.ReadCloser
done chan struct{}
closeOnce sync.Once
err *eventstreamapi.OnceError
}
// NewStartMedicalStreamTranscriptionEventStream initializes an StartMedicalStreamTranscriptionEventStream.
// This function should only be used for testing and mocking the StartMedicalStreamTranscriptionEventStream
// stream within your application.
//
// The Writer member must be set before writing events to the stream.
//
// The Reader member must be set before reading events from the stream.
//
// es := NewStartMedicalStreamTranscriptionEventStream(func(o *StartMedicalStreamTranscriptionEventStream{
// es.Writer = myMockStreamWriter
// es.Reader = myMockStreamReader
// })
func NewStartMedicalStreamTranscriptionEventStream(opts ...func(*StartMedicalStreamTranscriptionEventStream)) *StartMedicalStreamTranscriptionEventStream {
es := &StartMedicalStreamTranscriptionEventStream{
done: make(chan struct{}),
err: eventstreamapi.NewOnceError(),
}
for _, fn := range opts {
fn(es)
}
return es
}
func (es *StartMedicalStreamTranscriptionEventStream) runOnStreamPartClose(r *request.Request) {
if es.done == nil {
return
}
go es.waitStreamPartClose()
}
func (es *StartMedicalStreamTranscriptionEventStream) waitStreamPartClose() {
var inputErrCh <-chan struct{}
if v, ok := es.Writer.(interface{ ErrorSet() <-chan struct{} }); ok {
inputErrCh = v.ErrorSet()
}
var outputErrCh <-chan struct{}
if v, ok := es.Reader.(interface{ ErrorSet() <-chan struct{} }); ok {
outputErrCh = v.ErrorSet()
}
var outputClosedCh <-chan struct{}
if v, ok := es.Reader.(interface{ Closed() <-chan struct{} }); ok {
outputClosedCh = v.Closed()
}
select {
case <-es.done:
case <-inputErrCh:
es.err.SetError(es.Writer.Err())
es.Close()
case <-outputErrCh:
es.err.SetError(es.Reader.Err())
es.Close()
case <-outputClosedCh:
if err := es.Reader.Err(); err != nil {
es.err.SetError(es.Reader.Err())
}
es.Close()
}
}
func (es *StartMedicalStreamTranscriptionEventStream) setupInputPipe(r *request.Request) {
inputReader, inputWriter := io.Pipe()
r.SetStreamingBody(inputReader)
es.inputWriter = inputWriter
}
// Closes the input-pipe writer
func (es *StartMedicalStreamTranscriptionEventStream) closeInputPipe() error {
if es.inputWriter != nil {
return es.inputWriter.Close()
}
return nil
}
// Send writes the event to the stream blocking until the event is written.
// Returns an error if the event was not written.
//
// These events are:
//
// * AudioEvent
func (es *StartMedicalStreamTranscriptionEventStream) Send(ctx aws.Context, event AudioStreamEvent) error {
return es.Writer.Send(ctx, event)
}
func (es *StartMedicalStreamTranscriptionEventStream) runInputStream(r *request.Request) {
var opts []func(*eventstream.Encoder)
if r.Config.Logger != nil && r.Config.LogLevel.Matches(aws.LogDebugWithEventStreamBody) {
opts = append(opts, eventstream.EncodeWithLogger(r.Config.Logger))
}
var encoder eventstreamapi.Encoder = eventstream.NewEncoder(es.inputWriter, opts...)
var closer aws.MultiCloser
sigSeed, err := v4.GetSignedRequestSignature(r.HTTPRequest)
if err != nil {
r.Error = awserr.New(request.ErrCodeSerialization,
"unable to get initial request's signature", err)
return
}
signer := eventstreamapi.NewSignEncoder(
v4.NewStreamSigner(r.ClientInfo.SigningRegion, r.ClientInfo.SigningName,
sigSeed, r.Config.Credentials),
encoder,
)
encoder = signer
closer = append(closer, signer)
closer = append(closer, es.inputWriter)
eventWriter := eventstreamapi.NewEventWriter(encoder,
protocol.HandlerPayloadMarshal{
Marshalers: r.Handlers.BuildStream,
},
eventTypeForAudioStreamEvent,
)
es.Writer = &writeAudioStream{
StreamWriter: eventstreamapi.NewStreamWriter(eventWriter, closer),
}
}
// Events returns a channel to read events from.
//
// These events are:
//
// * MedicalTranscriptEvent
// * MedicalTranscriptResultStreamUnknownEvent
func (es *StartMedicalStreamTranscriptionEventStream) Events() <-chan MedicalTranscriptResultStreamEvent {
return es.Reader.Events()
}
func (es *StartMedicalStreamTranscriptionEventStream) runOutputStream(r *request.Request) {
var opts []func(*eventstream.Decoder)
if r.Config.Logger != nil && r.Config.LogLevel.Matches(aws.LogDebugWithEventStreamBody) {
opts = append(opts, eventstream.DecodeWithLogger(r.Config.Logger))
}
unmarshalerForEvent := unmarshalerForMedicalTranscriptResultStreamEvent{
metadata: protocol.ResponseMetadata{
StatusCode: r.HTTPResponse.StatusCode,
RequestID: r.RequestID,
},
}.UnmarshalerForEventName
decoder := eventstream.NewDecoder(r.HTTPResponse.Body, opts...)
eventReader := eventstreamapi.NewEventReader(decoder,
protocol.HandlerPayloadUnmarshal{
Unmarshalers: r.Handlers.UnmarshalStream,
},
unmarshalerForEvent,
)
es.outputReader = r.HTTPResponse.Body
es.Reader = newReadMedicalTranscriptResultStream(eventReader)
}
// Close closes the stream. This will also cause the stream to be closed.
// Close must be called when done using the stream API. Not calling Close
// may result in resource leaks.
//
// Will close the underlying EventStream writer, and no more events can be
// sent.
//
// You can use the closing of the Reader's Events channel to terminate your
// application's read from the API's stream.
//
func (es *StartMedicalStreamTranscriptionEventStream) Close() (err error) {
es.closeOnce.Do(es.safeClose)
return es.Err()
}
func (es *StartMedicalStreamTranscriptionEventStream) safeClose() {
if es.done != nil {
close(es.done)
}
t := time.NewTicker(time.Second)
defer t.Stop()
writeCloseDone := make(chan error)
go func() {
if err := es.Writer.Close(); err != nil {
es.err.SetError(err)
}
close(writeCloseDone)
}()
select {
case <-t.C:
case <-writeCloseDone:
}
if err := es.closeInputPipe(); err != nil {
es.err.SetError(err)
}
es.Reader.Close()
if es.outputReader != nil {
es.outputReader.Close()
}
}
// Err returns any error that occurred while reading or writing EventStream
// Events from the service API's response. Returns nil if there were no errors.
func (es *StartMedicalStreamTranscriptionEventStream) Err() error {
if err := es.err.Err(); err != nil {
return err
}
if err := es.Writer.Err(); err != nil {
return err
}
if err := es.Reader.Err(); err != nil {
return err
}
return nil
}
const opStartStreamTranscription = "StartStreamTranscription"
// StartStreamTranscriptionRequest generates a "aws/request.Request" representing the
// client's request for the StartStreamTranscription operation. The "output" return
// value will be populated with the request's response once the request completes
// successfully.
//
// Use "Send" method on the returned Request to send the API call to the service.
// the "output" return value is not valid until after Send returns without error.
//
// See StartStreamTranscription for more information on using the StartStreamTranscription
// API call, and error handling.
//
// This method is useful when you want to inject custom logic or configuration
// into the SDK's request lifecycle. Such as custom headers, or retry logic.
//
//
// // Example sending a request using the StartStreamTranscriptionRequest method.
// req, resp := client.StartStreamTranscriptionRequest(params)
//
// err := req.Send()
// if err == nil { // resp is now filled
// fmt.Println(resp)
// }
//
// See also, https://docs.aws.amazon.com/goto/WebAPI/transcribe-streaming-2017-10-26/StartStreamTranscription
func (c *TranscribeStreamingService) StartStreamTranscriptionRequest(input *StartStreamTranscriptionInput) (req *request.Request, output *StartStreamTranscriptionOutput) {
op := &request.Operation{
Name: opStartStreamTranscription,
HTTPMethod: "POST",
HTTPPath: "/stream-transcription",
}
if input == nil {
input = &StartStreamTranscriptionInput{}
}
output = &StartStreamTranscriptionOutput{}
req = c.newRequest(op, input, output)
req.Handlers.UnmarshalMeta.PushBack(
protocol.RequireHTTPMinProtocol{Major: 2}.Handler,
)
es := NewStartStreamTranscriptionEventStream()
output.eventStream = es
req.Handlers.Sign.PushFront(es.setupInputPipe)
req.Handlers.UnmarshalError.PushBackNamed(request.NamedHandler{
Name: "InputPipeCloser",
Fn: func(r *request.Request) {
err := es.closeInputPipe()
if err != nil {
r.Error = awserr.New(eventstreamapi.InputWriterCloseErrorCode, err.Error(), r.Error)
}
},
})
req.Handlers.Build.PushBack(request.WithSetRequestHeaders(map[string]string{
"Content-Type": "application/vnd.amazon.eventstream",
"X-Amz-Content-Sha256": "STREAMING-AWS4-HMAC-SHA256-EVENTS",
}))
req.Handlers.Build.Swap(restjson.BuildHandler.Name, rest.BuildHandler)
req.Handlers.Send.Swap(client.LogHTTPRequestHandler.Name, client.LogHTTPRequestHeaderHandler)
req.Handlers.Unmarshal.PushBack(es.runInputStream)
req.Handlers.Send.Swap(client.LogHTTPResponseHandler.Name, client.LogHTTPResponseHeaderHandler)
req.Handlers.Unmarshal.Swap(restjson.UnmarshalHandler.Name, rest.UnmarshalHandler)
req.Handlers.Unmarshal.PushBack(es.runOutputStream)
req.Handlers.Unmarshal.PushBack(es.runOnStreamPartClose)
return
}
// StartStreamTranscription API operation for Amazon Transcribe Streaming Service.
//
// Starts a bidirectional HTTP2 stream where audio is streamed to Amazon Transcribe
// and the transcription results are streamed to your application.
//
// The following are encoded as HTTP2 headers:
//
// * x-amzn-transcribe-language-code
//
// * x-amzn-transcribe-media-encoding
//
// * x-amzn-transcribe-sample-rate
//
// * x-amzn-transcribe-session-id
//
// Returns awserr.Error for service API and SDK errors. Use runtime type assertions
// with awserr.Error's Code and Message methods to get detailed information about
// the error.
//
// See the AWS API reference guide for Amazon Transcribe Streaming Service's
// API operation StartStreamTranscription for usage and error information.
//
// Returned Error Types:
// * BadRequestException
// One or more arguments to the StartStreamTranscription or StartMedicalStreamTranscription
// operation was invalid. For example, MediaEncoding was not set to a valid
// encoding, or LanguageCode was not set to a valid code. Check the parameters
// and try your request again.
//
// * LimitExceededException
// You have exceeded the maximum number of concurrent transcription streams,
// are starting transcription streams too quickly, or the maximum audio length
// of 4 hours. Wait until a stream has finished processing, or break your audio
// stream into smaller chunks and try your request again.
//
// * InternalFailureException
// A problem occurred while processing the audio. Amazon Transcribe or Amazon
// Transcribe Medical terminated processing. Try your request again.
//
// * ConflictException
// A new stream started with the same session ID. The current stream has been
// terminated.
//
// * ServiceUnavailableException
// Service is currently unavailable. Try your request later.
//
// See also, https://docs.aws.amazon.com/goto/WebAPI/transcribe-streaming-2017-10-26/StartStreamTranscription
func (c *TranscribeStreamingService) StartStreamTranscription(input *StartStreamTranscriptionInput) (*StartStreamTranscriptionOutput, error) {
req, out := c.StartStreamTranscriptionRequest(input)
return out, req.Send()
}
// StartStreamTranscriptionWithContext is the same as StartStreamTranscription with the addition of
// the ability to pass a context and additional request options.
//
// See StartStreamTranscription for details on how to use this API operation.
//
// The context must be non-nil and will be used for request cancellation. If
// the context is nil a panic will occur. In the future the SDK may create
// sub-contexts for http.Requests. See https://golang.org/pkg/context/
// for more information on using Contexts.
func (c *TranscribeStreamingService) StartStreamTranscriptionWithContext(ctx aws.Context, input *StartStreamTranscriptionInput, opts ...request.Option) (*StartStreamTranscriptionOutput, error) {
req, out := c.StartStreamTranscriptionRequest(input)
req.SetContext(ctx)
req.ApplyOptions(opts...)
return out, req.Send()
}
var _ awserr.Error
// StartStreamTranscriptionEventStream provides the event stream handling for the StartStreamTranscription.
//
// For testing and mocking the event stream this type should be initialized via
// the NewStartStreamTranscriptionEventStream constructor function. Using the functional options
// to pass in nested mock behavior.
type StartStreamTranscriptionEventStream struct {
// Writer is the EventStream writer for the AudioStream
// events. This value is automatically set by the SDK when the API call is made
// Use this member when unit testing your code with the SDK to mock out the
// EventStream Writer.
//
// Must not be nil.
Writer AudioStreamWriter
inputWriter io.WriteCloser
// Reader is the EventStream reader for the TranscriptResultStream
// events. This value is automatically set by the SDK when the API call is made
// Use this member when unit testing your code with the SDK to mock out the
// EventStream Reader.
//
// Must not be nil.
Reader TranscriptResultStreamReader
outputReader io.ReadCloser
done chan struct{}
closeOnce sync.Once
err *eventstreamapi.OnceError
}
// NewStartStreamTranscriptionEventStream initializes an StartStreamTranscriptionEventStream.
// This function should only be used for testing and mocking the StartStreamTranscriptionEventStream
// stream within your application.
//
// The Writer member must be set before writing events to the stream.
//
// The Reader member must be set before reading events from the stream.
//
// es := NewStartStreamTranscriptionEventStream(func(o *StartStreamTranscriptionEventStream{
// es.Writer = myMockStreamWriter
// es.Reader = myMockStreamReader
// })
func NewStartStreamTranscriptionEventStream(opts ...func(*StartStreamTranscriptionEventStream)) *StartStreamTranscriptionEventStream {
es := &StartStreamTranscriptionEventStream{
done: make(chan struct{}),
err: eventstreamapi.NewOnceError(),
}
for _, fn := range opts {
fn(es)
}
return es
}
func (es *StartStreamTranscriptionEventStream) runOnStreamPartClose(r *request.Request) {
if es.done == nil {
return
}
go es.waitStreamPartClose()
}
func (es *StartStreamTranscriptionEventStream) waitStreamPartClose() {
var inputErrCh <-chan struct{}
if v, ok := es.Writer.(interface{ ErrorSet() <-chan struct{} }); ok {
inputErrCh = v.ErrorSet()
}
var outputErrCh <-chan struct{}
if v, ok := es.Reader.(interface{ ErrorSet() <-chan struct{} }); ok {
outputErrCh = v.ErrorSet()
}
var outputClosedCh <-chan struct{}
if v, ok := es.Reader.(interface{ Closed() <-chan struct{} }); ok {
outputClosedCh = v.Closed()
}
select {
case <-es.done:
case <-inputErrCh:
es.err.SetError(es.Writer.Err())
es.Close()
case <-outputErrCh:
es.err.SetError(es.Reader.Err())
es.Close()
case <-outputClosedCh:
if err := es.Reader.Err(); err != nil {
es.err.SetError(es.Reader.Err())
}
es.Close()
}
}
func (es *StartStreamTranscriptionEventStream) setupInputPipe(r *request.Request) {
inputReader, inputWriter := io.Pipe()
r.SetStreamingBody(inputReader)
es.inputWriter = inputWriter
}
// Closes the input-pipe writer
func (es *StartStreamTranscriptionEventStream) closeInputPipe() error {
if es.inputWriter != nil {
return es.inputWriter.Close()
}
return nil
}
// Send writes the event to the stream blocking until the event is written.
// Returns an error if the event was not written.
//
// These events are:
//
// * AudioEvent
func (es *StartStreamTranscriptionEventStream) Send(ctx aws.Context, event AudioStreamEvent) error {
return es.Writer.Send(ctx, event)
}
func (es *StartStreamTranscriptionEventStream) runInputStream(r *request.Request) {
var opts []func(*eventstream.Encoder)
if r.Config.Logger != nil && r.Config.LogLevel.Matches(aws.LogDebugWithEventStreamBody) {
opts = append(opts, eventstream.EncodeWithLogger(r.Config.Logger))
}
var encoder eventstreamapi.Encoder = eventstream.NewEncoder(es.inputWriter, opts...)
var closer aws.MultiCloser
sigSeed, err := v4.GetSignedRequestSignature(r.HTTPRequest)
if err != nil {
r.Error = awserr.New(request.ErrCodeSerialization,
"unable to get initial request's signature", err)
return
}
signer := eventstreamapi.NewSignEncoder(
v4.NewStreamSigner(r.ClientInfo.SigningRegion, r.ClientInfo.SigningName,
sigSeed, r.Config.Credentials),
encoder,
)
encoder = signer
closer = append(closer, signer)
closer = append(closer, es.inputWriter)
eventWriter := eventstreamapi.NewEventWriter(encoder,
protocol.HandlerPayloadMarshal{
Marshalers: r.Handlers.BuildStream,
},
eventTypeForAudioStreamEvent,
)
es.Writer = &writeAudioStream{
StreamWriter: eventstreamapi.NewStreamWriter(eventWriter, closer),
}
}
// Events returns a channel to read events from.
//
// These events are:
//
// * TranscriptEvent
// * TranscriptResultStreamUnknownEvent
func (es *StartStreamTranscriptionEventStream) Events() <-chan TranscriptResultStreamEvent {
return es.Reader.Events()
}
func (es *StartStreamTranscriptionEventStream) runOutputStream(r *request.Request) {
var opts []func(*eventstream.Decoder)
if r.Config.Logger != nil && r.Config.LogLevel.Matches(aws.LogDebugWithEventStreamBody) {
opts = append(opts, eventstream.DecodeWithLogger(r.Config.Logger))
}
unmarshalerForEvent := unmarshalerForTranscriptResultStreamEvent{
metadata: protocol.ResponseMetadata{
StatusCode: r.HTTPResponse.StatusCode,
RequestID: r.RequestID,
},
}.UnmarshalerForEventName
decoder := eventstream.NewDecoder(r.HTTPResponse.Body, opts...)
eventReader := eventstreamapi.NewEventReader(decoder,
protocol.HandlerPayloadUnmarshal{
Unmarshalers: r.Handlers.UnmarshalStream,
},
unmarshalerForEvent,
)
es.outputReader = r.HTTPResponse.Body
es.Reader = newReadTranscriptResultStream(eventReader)
}
// Close closes the stream. This will also cause the stream to be closed.
// Close must be called when done using the stream API. Not calling Close
// may result in resource leaks.
//
// Will close the underlying EventStream writer, and no more events can be
// sent.
//
// You can use the closing of the Reader's Events channel to terminate your
// application's read from the API's stream.
//
func (es *StartStreamTranscriptionEventStream) Close() (err error) {
es.closeOnce.Do(es.safeClose)
return es.Err()
}
func (es *StartStreamTranscriptionEventStream) safeClose() {
if es.done != nil {
close(es.done)
}
t := time.NewTicker(time.Second)
defer t.Stop()
writeCloseDone := make(chan error)
go func() {
if err := es.Writer.Close(); err != nil {
es.err.SetError(err)
}
close(writeCloseDone)
}()
select {
case <-t.C:
case <-writeCloseDone:
}
if err := es.closeInputPipe(); err != nil {
es.err.SetError(err)
}
es.Reader.Close()
if es.outputReader != nil {
es.outputReader.Close()
}
}
// Err returns any error that occurred while reading or writing EventStream
// Events from the service API's response. Returns nil if there were no errors.
func (es *StartStreamTranscriptionEventStream) Err() error {
if err := es.err.Err(); err != nil {
return err
}
if err := es.Writer.Err(); err != nil {
return err
}
if err := es.Reader.Err(); err != nil {
return err
}
return nil
}
// A list of possible transcriptions for the audio.
type Alternative struct {
_ struct{} `type:"structure"`
// One or more alternative interpretations of the input audio.
Items []*Item `type:"list"`
// The text that was transcribed from the audio.
Transcript *string `type:"string"`
}
// String returns the string representation
func (s Alternative) String() string {
return awsutil.Prettify(s)
}
// GoString returns the string representation
func (s Alternative) GoString() string {
return s.String()
}
// SetItems sets the Items field's value.
func (s *Alternative) SetItems(v []*Item) *Alternative {
s.Items = v
return s
}
// SetTranscript sets the Transcript field's value.
func (s *Alternative) SetTranscript(v string) *Alternative {
s.Transcript = &v
return s
}
// Provides a wrapper for the audio chunks that you are sending.
//
// For information on audio encoding in Amazon Transcribe, see input. For information
// on audio encoding formats in Amazon Transcribe Medical, see input-med.
type AudioEvent struct {
_ struct{} `type:"structure" payload:"AudioChunk"`
// An audio blob that contains the next part of the audio that you want to transcribe.
// The maximum audio chunk size is 32 KB.
//
// AudioChunk is automatically base64 encoded/decoded by the SDK.
AudioChunk []byte `type:"blob"`
}
// String returns the string representation
func (s AudioEvent) String() string {
return awsutil.Prettify(s)
}
// GoString returns the string representation
func (s AudioEvent) GoString() string {
return s.String()
}
// SetAudioChunk sets the AudioChunk field's value.
func (s *AudioEvent) SetAudioChunk(v []byte) *AudioEvent {
s.AudioChunk = v
return s
}
// The AudioEvent is and event in the AudioStream group of events.
func (s *AudioEvent) eventAudioStream() {}
// UnmarshalEvent unmarshals the EventStream Message into the AudioEvent value.
// This method is only used internally within the SDK's EventStream handling.
func (s *AudioEvent) UnmarshalEvent(
payloadUnmarshaler protocol.PayloadUnmarshaler,
msg eventstream.Message,
) error {
s.AudioChunk = make([]byte, len(msg.Payload))
copy(s.AudioChunk, msg.Payload)
return nil
}
// MarshalEvent marshals the type into an stream event value. This method
// should only used internally within the SDK's EventStream handling.
func (s *AudioEvent) MarshalEvent(pm protocol.PayloadMarshaler) (msg eventstream.Message, err error) {
msg.Headers.Set(eventstreamapi.MessageTypeHeader, eventstream.StringValue(eventstreamapi.EventMessageType))
msg.Headers.Set(":content-type", eventstream.StringValue("application/octet-stream"))
msg.Payload = s.AudioChunk
return msg, err
}
// AudioStreamEvent groups together all EventStream
// events writes for AudioStream.
//
// These events are:
//
// * AudioEvent
type AudioStreamEvent interface {
eventAudioStream()
eventstreamapi.Marshaler
eventstreamapi.Unmarshaler
}
// AudioStreamWriter provides the interface for writing events to the stream.
// The default implementation for this interface will be AudioStream.
//
// The writer's Close method must allow multiple concurrent calls.
//
// These events are:
//
// * AudioEvent
type AudioStreamWriter interface {
// Sends writes events to the stream blocking until the event has been
// written. An error is returned if the write fails.
Send(aws.Context, AudioStreamEvent) error
// Close will stop the writer writing to the event stream.
Close() error
// Returns any error that has occurred while writing to the event stream.
Err() error
}
type writeAudioStream struct {
*eventstreamapi.StreamWriter
}
func (w *writeAudioStream) Send(ctx aws.Context, event AudioStreamEvent) error {
return w.StreamWriter.Send(ctx, event)
}
func eventTypeForAudioStreamEvent(event eventstreamapi.Marshaler) (string, error) {
switch event.(type) {
case *AudioEvent:
return "AudioEvent", nil
default:
return "", awserr.New(
request.ErrCodeSerialization,
fmt.Sprintf("unknown event type, %T, for AudioStream", event),
nil,
)
}
}
// One or more arguments to the StartStreamTranscription or StartMedicalStreamTranscription
// operation was invalid. For example, MediaEncoding was not set to a valid
// encoding, or LanguageCode was not set to a valid code. Check the parameters
// and try your request again.
type BadRequestException struct {
_ struct{} `type:"structure"`
RespMetadata protocol.ResponseMetadata `json:"-" xml:"-"`
Message_ *string `locationName:"Message" type:"string"`
}
// String returns the string representation
func (s BadRequestException) String() string {
return awsutil.Prettify(s)
}
// GoString returns the string representation
func (s BadRequestException) GoString() string {
return s.String()
}
// The BadRequestException is and event in the MedicalTranscriptResultStream group of events.
func (s *BadRequestException) eventMedicalTranscriptResultStream() {}
// The BadRequestException is and event in the TranscriptResultStream group of events.
func (s *BadRequestException) eventTranscriptResultStream() {}
// UnmarshalEvent unmarshals the EventStream Message into the BadRequestException value.
// This method is only used internally within the SDK's EventStream handling.
func (s *BadRequestException) UnmarshalEvent(
payloadUnmarshaler protocol.PayloadUnmarshaler,
msg eventstream.Message,
) error {
if err := payloadUnmarshaler.UnmarshalPayload(
bytes.NewReader(msg.Payload), s,
); err != nil {
return err
}
return nil
}
// MarshalEvent marshals the type into an stream event value. This method
// should only used internally within the SDK's EventStream handling.
func (s *BadRequestException) MarshalEvent(pm protocol.PayloadMarshaler) (msg eventstream.Message, err error) {
msg.Headers.Set(eventstreamapi.MessageTypeHeader, eventstream.StringValue(eventstreamapi.ExceptionMessageType))
var buf bytes.Buffer
if err = pm.MarshalPayload(&buf, s); err != nil {
return eventstream.Message{}, err
}
msg.Payload = buf.Bytes()
return msg, err
}
func newErrorBadRequestException(v protocol.ResponseMetadata) error {
return &BadRequestException{
RespMetadata: v,
}
}
// Code returns the exception type name.
func (s *BadRequestException) Code() string {
return "BadRequestException"
}
// Message returns the exception's message.
func (s *BadRequestException) Message() string {
if s.Message_ != nil {
return *s.Message_
}