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Adds Dialogflow detect intent streams sample
This PR adds the following code sample region tags: dialogflow_detect_intent_streaming The canonical (Java) is found here: https://github.com/GoogleCloudPlatform/java-docs-samples/blob/master/dialogflow/cloud-client/src/main/java/com/example/dialogflow/DetectIntentStream.java Individual commits: * feat: adds detect intent stream sample to Dialogflow C# samples * feat: adds test for detect intent stream * fix: changes timeout period to 500 on DF tests
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,121 @@ | ||
| // Copyright(c) 2020 Google Inc. | ||
| // | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); you may not | ||
| // use this file except in compliance with the License. You may obtain a copy of | ||
| // the License at | ||
| // | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, WITHOUT | ||
| // WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the | ||
| // License for the specific language governing permissions and limitations under | ||
| // the License. | ||
|
|
||
| using CommandLine; | ||
| using Google.Cloud.Dialogflow.V2; | ||
| using System; | ||
| using System.Collections.Generic; | ||
| using System.IO; | ||
| using System.Threading.Tasks; | ||
|
|
||
| namespace GoogleCloudSamples | ||
| { | ||
| public class DetectIntentStream | ||
| { | ||
| public static void RegisterCommands(VerbMap<object> verbMap) | ||
| { | ||
| verbMap | ||
| .Add((DetectIntentFromStreamOptions opts) => | ||
| DetectIntentFromStreamAsync(opts.ProjectId, opts.SessionId, opts.FilePath).Result); | ||
| } | ||
|
|
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| [Verb("detect-intent:streams", HelpText = "Detect intent from stream")] | ||
| public class DetectIntentFromStreamOptions : OptionsWithProjectIdAndSessionId | ||
| { | ||
| [Value(0, MetaName = "file", HelpText = "Path to the audio file", Required = true)] | ||
| public string FilePath { get; set; } | ||
| } | ||
|
|
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| // [START dialogflow_detect_intent_streaming] | ||
| public static async Task<object> DetectIntentFromStreamAsync( | ||
| string projectId, | ||
| string sessionId, | ||
| string filePath) | ||
| { | ||
| var sessionsClient = SessionsClient.Create(); | ||
| var sessionName = SessionName.Format(projectId, sessionId); | ||
|
|
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| // Initialize streaming call, retrieving the stream object | ||
| var streamingDetectIntent = sessionsClient.StreamingDetectIntent(); | ||
|
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| // Define a task to process results from the API | ||
| var responseHandlerTask = Task.Run(async () => | ||
| { | ||
| var responseStream = streamingDetectIntent.ResponseStream; | ||
| while (await responseStream.MoveNext()) | ||
| { | ||
| var response = responseStream.Current; | ||
| var queryResult = response.QueryResult; | ||
|
|
||
| if (queryResult != null) | ||
| { | ||
| Console.WriteLine($"Query text: {queryResult.QueryText}"); | ||
| if (queryResult.Intent != null) | ||
| { | ||
| Console.Write("Intent detected:"); | ||
| Console.WriteLine(queryResult.Intent.DisplayName); | ||
| } | ||
| } | ||
| } | ||
| }); | ||
|
|
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| // Instructs the speech recognizer how to process the audio content. | ||
| // Note: hard coding audioEncoding, sampleRateHertz for simplicity. | ||
| var queryInput = new QueryInput | ||
| { | ||
| AudioConfig = new InputAudioConfig | ||
| { | ||
| AudioEncoding = AudioEncoding.Linear16, | ||
| LanguageCode = "en-US", | ||
| SampleRateHertz = 16000 | ||
| } | ||
| }; | ||
|
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| // The first request must **only** contain the audio configuration: | ||
| await streamingDetectIntent.WriteAsync(new StreamingDetectIntentRequest | ||
| { | ||
| QueryInput = queryInput, | ||
| Session = sessionName | ||
| }); | ||
|
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| using (FileStream fileStream = new FileStream(filePath, FileMode.Open)) | ||
| { | ||
| // Subsequent requests must **only** contain the audio data. | ||
| // Following messages: audio chunks. We just read the file in | ||
| // fixed-size chunks. In reality you would split the user input | ||
| // by time. | ||
| var buffer = new byte[32 * 1024]; | ||
| int bytesRead; | ||
| while ((bytesRead = await fileStream.ReadAsync( | ||
| buffer, 0, buffer.Length)) > 0) | ||
| { | ||
| await streamingDetectIntent.WriteAsync(new StreamingDetectIntentRequest | ||
| { | ||
| Session = sessionName, | ||
| InputAudio = Google.Protobuf.ByteString.CopyFrom(buffer, 0, bytesRead) | ||
| }); | ||
| }; | ||
| } | ||
|
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| // Tell the service you are done sending data | ||
| await streamingDetectIntent.WriteCompleteAsync(); | ||
|
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| // This will complete once all server responses have been processed. | ||
| await responseHandlerTask; | ||
|
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| return 0; | ||
| } | ||
| // [END dialogflow_detect_intent_streaming] | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,35 @@ | ||
| // Copyright(c) 2020 Google Inc. | ||
| // | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); you may not | ||
| // use this file except in compliance with the License. You may obtain a copy of | ||
| // the License at | ||
| // | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, WITHOUT | ||
| // WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the | ||
| // License for the specific language governing permissions and limitations under | ||
| // the License. | ||
|
|
||
| using System; | ||
| using System.IO; | ||
| using Xunit; | ||
|
|
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| namespace GoogleCloudSamples | ||
| { | ||
| public class DetectIntentStreamsTest : DialogflowTest | ||
| { | ||
| [Fact(Skip = "https://github.com/GoogleCloudPlatform/dotnet-docs-samples/issues/947")] | ||
| void TestDetectIntentFromStream() | ||
| { | ||
| var _audioWavPath = Path.Combine("resources", "book_a_room.wav"); | ||
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| RunWithSessionId("detect-intent:streams", _audioWavPath); | ||
| Assert.Equal(0, ExitCode); | ||
|
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| Assert.Contains("book", Stdout); | ||
| Assert.Contains("Intent detected:", Stdout); | ||
| } | ||
| } | ||
| } |
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