Changes done for v2.3.1.

Author: nysenthil

README.md

@@ -191,6 +191,8 @@ st submitjob -P tlsPort=9443 -P vgwSessionLoggingNeeded=false -P numberOfS2TEngi
 ## Examples that showcase this toolkit's features
 There are many examples available in this toolkit that can be compiled and tested. Couple of them are generic real-world solutions running in production that can be customized and used when needed.
 
+If you have no need for the call recording and call replay features, you can use the two examples below that end with the word Mini. It will cut down the extra logic to result in a fewer number of overall operators.
+
 * [AccessTokenGenerator](https://github.com/IBMStreams/streamsx.sttgateway/tree/develop/samples/AccessTokenGenerator)
 * [AudioFileWatsonSTT](https://github.com/IBMStreams/streamsx.sttgateway/tree/develop/samples/AudioFileWatsonSTT)
 * [AudioFileWatsonSTTAllOutput](https://github.com/IBMStreams/streamsx.sttgateway/tree/develop/samples/AudioFileWatsonSTTAllOutput)
@@ -202,6 +204,8 @@ There are many examples available in this toolkit that can be compiled and teste
 * [VgwDataRouter](https://github.com/IBMStreams/streamsx.sttgateway/tree/develop/samples/VgwDataRouter)
 * [VgwDataRouterToWatsonS2T](https://github.com/IBMStreams/streamsx.sttgateway/tree/develop/samples/VgwDataRouterToWatsonS2T)
 * [VgwDataRouterToWatsonSTT](https://github.com/IBMStreams/streamsx.sttgateway/tree/develop/samples/VgwDataRouterToWatsonSTT)
+* [VgwDataRouterMini](https://github.com/IBMStreams/streamsx.sttgateway/tree/develop/samples/VgwDataRouterMini)
+* [VgwDataRouterToWatsonSTTMini](https://github.com/IBMStreams/streamsx.sttgateway/tree/develop/samples/VgwDataRouterToWatsonSTTMini)
 * [stt_results_http_receiver](https://github.com/IBMStreams/streamsx.sttgateway/tree/develop/samples/stt_results_http_receiver)
 * [audio_files](https://github.com/IBMStreams/streamsx.sttgateway/tree/develop/samples/audio-files)
 * [VoiceDataSimulator](https://github.com/IBMStreams/streamsx.sttgateway/tree/develop/samples/VoiceDataSimulator)

com.ibm.streamsx.sttgateway/CHANGELOG.md

@@ -1,5 +1,18 @@
 # Changes
 
+## v2.3.1
+* Sep/20/2021
+* Dynamically change the maximum concurrent calls allowed value.
+* Query maximum allowed concurrent calls and active concurrent calls values.
+* Utterance latency with reference to the call start time is available.
+* New operator metric to display the total throttled calls count.
+* Option to redact numeric values in the speech to text result.
+* Write the STT engine id and result processor id in the call started file.
+* STT URI submission time parameter is made mandatory.
+* A new call simulation script is available to send hundreds of calls via WebSocket into the Voice Gateway source operator for testing.
+* A new script is available to start many speech processor jobs and a single VgwDataRouter job.
+* A new script is available to cancel all the speech processor jobs and a single VgwDataRouter job. 
+
 ## v2.3.0
 * Aug/23/2021
 * Made changes in the IBMVoiceGatewaySource operator to parse the SIP invite custom header fields such as Cisco-Guid and include it in the output stream.

com.ibm.streamsx.sttgateway/com.ibm.streamsx.sttgateway.watson/IBMVoiceGatewaySource/IBMVoiceGatewaySource.xml

@@ -46,6 +46,15 @@
       put the customer in the driver's seat to gather real-time intelligence from their
       voice infrastructure.
 
+      This operator allows the user to set the maximum number of concurrent calls allowed via the
+      operator parameter named maxConcurrentCallsAllowed. In addition, it also allows the user to 
+      dynamically query and adjust the maximum allowed concurrent calls count via the 
+      following CURL commands.
+      
+      curl -k -X POST https://host:port -H GetMaxConcurrentCalls:true
+      
+	  curl -k -X POST https://host:port -H SetMaxConcurrentCalls:150
+      
       For a detailed documentation about the requirements, operator design, usage patterns and 
       in-depth technical details, please refer to the official STT Gateway toolkit documentation 
       available at this URL:
@@ -67,6 +76,16 @@
           <kind>Counter</kind>
         </metric>
 
+        <metric>
+          <name>nVoiceCallsThrottled</name>
+          <description>
+          Number of voice calls throttled by this operator instance.
+          
+          *NOTE:* This metric is only updated if parameter `vgwLiveMetricsUpdateNeeded` is true.
+          </description>
+          <kind>Counter</kind>
+        </metric>
+
         <metric>
           <name>nSpeechDataBytesReceived</name>
           <description>
@@ -145,6 +164,10 @@
             <description>Returns an rstring value with the call start date time i.e. system clock time.</description>
             <prototype><![CDATA[rstring getCallStartDateTime()]]></prototype>
           </function>          
+          <function>
+            <description>Returns an int64 value with the call start time in epoch seconds.</description>
+            <prototype><![CDATA[int64 getCallStartTimeInEpochSeconds()]]></prototype>
+          </function>          
           <function>
             <description>Returns an rstring value for the SIP invite custom header Cisco-Guid.</description>
             <prototype><![CDATA[rstring getCiscoGuid()]]></prototype>
@@ -287,6 +310,16 @@
         <type>boolean</type>
         <cardinality>1</cardinality>
       </parameter>
+      
+      <parameter>
+        <name>maxConcurrentCallsAllowed</name>
+        <description>This parameter specifies the maximum concurrent calls allowed for processing by this operator. (Default is 10)</description>
+        <optional>true</optional>
+        <rewriteAllowed>true</rewriteAllowed>
+        <expressionMode>AttributeFree</expressionMode>
+        <type>uint32</type>
+        <cardinality>1</cardinality>
+      </parameter>
     </parameters>
 
     <inputPorts>