Simple Play

A simple application that says some text and then plays a wav file (welcome.wav) to an answered inbound or outbound call.

This application requires the wav file welcome.wav to be available in the cloud media store.

Uses actions:

Play

JSONC#VBJavaPythonPHP

First pageError pageFinal page

{
    "actions" :
    [
        {
            "play" :
            {
                "play_list" :
                [
                    {
                        "text_to_say" : "Hello, good evening and welcome"
                    },
                    {
                        "file_to_play" : "welcome.wav"
                    }
                ]
            }
        }
    ],
    "token" : "my instance id"
}

{
    [
    ],
    "token" : "Error for Action: xxxx  ActionIndex: xxxx  Result: xxxx"
}

{
}

Implemented as an ASP.Net Web Form:

First pageError pageFinal page

using System;
using System.Collections.Generic;
using RestAPIWrapper;

public partial class SimplePlay : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        // Unpack the request
        TelephonyRequest ourRequest = new TelephonyRequest(Request);
        if (!ourRequest.IsValid)
        {
            return;
        }
        String callFrom = ourRequest.InstanceInfo.ThisCall.CallFrom;

        // Setup the actions
        List<TelephonyAction> actions = new List<TelephonyAction>();
        Play playAction = Play.SayText("Hello, good evening and welcome.");
        playAction.AddFile("welcome.wav");
        actions.Add(playAction);

        // Respond
        String token = String.Format("my play instance id from caller {0}", callFrom);
        TelephonyResponse ourResponse = new TelephonyResponse(actions, token);
        ourResponse.ToHttpResponse(Response);
    }
}

using System;
using System.Collections.Generic;
using RestAPIWrapper;

public partial class ErrorPage : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        // Unpack the request
        TelephonyRequest ourRequest = new TelephonyRequest(Request);
        if (!ourRequest.IsValid)
        {
            return;
        }
        ErrorResult result = ourRequest.InstanceInfo.ErrorResult;

        String token = String.Format("Action: {0}\nActionIndex: {1}\nResult: {2}",
            result.Action, result.ActionIndex, result.Result);

        // Respond
        TelephonyResponse ourResponse = new TelephonyResponse(null, token);
        ourResponse.ToHttpResponse(Response);
    }
}

using System;
using System.Collections.Generic;
using RestAPIWrapper;

public partial class FinalPage : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        // Unpack the request
        TelephonyRequest ourRequest = new TelephonyRequest(Request);
        if (!ourRequest.IsValid)
        {
            return;
        }
    }
}

Implemented as an ASP.Net Web Form:

First pageError pageFinal page

Imports System
Imports System.Collections.Generic
Imports RestAPIWrapper

Partial Class SimplePlay
    Inherits System.Web.UI.Page

    Protected Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs)

        ' Unpack the request
        Dim ourRequest As TelephonyRequest = New TelephonyRequest(Request)
        If Not ourRequest.IsValid Then
            Return
        End If

        Dim callFrom As String = ourRequest.InstanceInfo.ThisCall.CallFrom

        ' Setup the actions
        Dim actions As List(Of TelephonyAction) = New List(Of TelephonyAction)
        Dim playAction As Play = Play.SayText("Hello, good evening and welcome.")
        playAction.AddFile("welcome.wav")
        actions.Add(playAction)

        ' Respond
        Dim token As String = String.Format("my play instance id from caller {0}", callFrom)
        Dim ourResponse As TelephonyResponse = New TelephonyResponse(actions, token)
        ourResponse.ToHttpResponse(Response)

    End Sub
End Class

Imports System
Imports System.Collections.Generic
Imports RestAPIWrapper

Partial Class ErrorPage
    Inherits System.Web.UI.Page

    Protected Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs)

        ' Unpack the request
        Dim ourRequest As TelephonyRequest = New TelephonyRequest(Request)
        If Not ourRequest.IsValid Then
            Return
        End If
        Dim result As ErrorResult = ourRequest.InstanceInfo.ErrorResult

        Dim token As String = String.Format("Action: {0}\nActionIndex: {1}\nResult: {2}", _
            result.Action, result.ActionIndex, result.Result)

        ' Respond
        Dim ourResponse As TelephonyResponse = New TelephonyResponse(token)
        ourResponse.ToHttpResponse(Response)
    End Sub
End Class

Imports System
Imports System.Collections.Generic
Imports RestAPIWrapper

Partial Class FinalPage
    Inherits System.Web.UI.Page

    Protected Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs)

        ' Unpack the request
        Dim ourRequest As TelephonyRequest = New TelephonyRequest(Request)
        If Not ourRequest.IsValid Then
            Return
        End If
    End Sub
End Class

Implemented as a Java Servlet:

First pageError pageFinal page

import javax.servlet.http.*;
import javax.servlet.ServletException;
import java.io.IOException;
import com.aculab.telephonyrestapi.*;

public class SimplePlay extends HttpServlet
{
    @Override
    public void doPost(HttpServletRequest request,
                       HttpServletResponse response) throws IOException, ServletException
    {
        handleRequest(request, response);
    }

    @Override
    public void doGet(HttpServletRequest request,
                      HttpServletResponse response) throws IOException, ServletException
    {
        handleRequest(request, response);
    }

    private void handleRequest(HttpServletRequest request,
                               HttpServletResponse response) throws IOException
    {
        // Unpack the request
        TelephonyRequest ourRequest = new TelephonyRequest(request);
        if (!ourRequest.isValid())
        {
            return;
        }

        // Setup the actions
        List<TelephonyAction> actions = new ArrayList<TelephonyAction>();
        Play playAction = Play.sayText(String.format("Hello, good evening and welcome."));
        playAction.addFile("welcome.wav");
        actions.add(playAction);

        // Respond
        TelephonyResponse ourResponse = new TelephonyResponse(actions, "my play instance id");
        ourResponse.setHttpServletResponse(response);
    }
}

package com.aculab.telephonyrestapi.samples;

import javax.servlet.http.*;
import javax.servlet.ServletException;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

import com.aculab.telephonyrestapi.*;

public class ErrorPage extends HttpServlet
{
    private static final long serialVersionUID = -4842873371047361437L;

    @Override
    public void doGet(HttpServletRequest request,
                      HttpServletResponse response)
        throws IOException, ServletException
    {
        handleRequest(request, response);
    }

    @Override
    public void doPost(HttpServletRequest request,
            HttpServletResponse response)
                    throws IOException, ServletException
    {
        handleRequest(request, response);
    }

    private void handleRequest(HttpServletRequest request,
                               HttpServletResponse response) throws IOException
    {
        // Unpack the request
        TelephonyRequest ourRequest = new TelephonyRequest(request);
        if (!ourRequest.isValid())
        {
            return;
        }
        ErrorResult result = ourRequest.getInstanceInfo().getErrorResult();

        String token = String.format("Action: %s\nActionIndex: %d\nResult: %s", result.getAction(), result.getActionIndex(), result.getResult());

        // Respond
        List<TelephonyAction> actions = new ArrayList<TelephonyAction>();
        TelephonyResponse ourResponse = new TelephonyResponse(actions, token);
        ourResponse.setHttpServletResponse(response);
    }
}

package com.aculab.telephonyrestapi.samples;

import javax.servlet.http.*;
import javax.servlet.ServletException;
import java.io.IOException;
import com.aculab.telephonyrestapi.*;

public class FinalPage extends HttpServlet
{
    private static final long serialVersionUID = 5940620014313056844L;

    @Override
    public void doGet(HttpServletRequest request,
                      HttpServletResponse response)
        throws IOException, ServletException
    {
        handleRequest(request, response);
    }

    @Override
    public void doPost(HttpServletRequest request,
            HttpServletResponse response)
                    throws IOException, ServletException
    {
        handleRequest(request, response);
    }

    private void handleRequest(HttpServletRequest request,
                               HttpServletResponse response) throws IOException
    {
        // Unpack the request
        TelephonyRequest ourRequest = new TelephonyRequest(request);
        if (!ourRequest.isValid())
        {
            return;
        }
    }
}

Implemented using a wrapper for Python's wsgiref.simple_server.

For the purposes of this sample, the first page is first_page, the final page is final_page and the error page is error_page.

base classapplication

The application base class.

from aculab.telephony_rest_api import Play

class ApplicationBase:

    def __init__(self, exit=None):
        self.exit = exit or [self.exit]


    def exit(self):
        pass


    def error_page(self, my_actions, query_info):
        try:
            error_result = query_info.ErrorResult
            action = error_result.get('action', 'none')
            print("\nError {0} : {1}\n".format(action, error_result['result']))
            my_actions.add(Play(text_to_say='I encountered an error.'))

        except Exception as exc:
            print("Error page exception: {0}".format(exc))
        return True


    def final_page(self, my_actions, query_info):
        try:
            tcall = query_info.ThisCall
            if tcall:
                print("This call ID         : {0}".format(tcall.get('call_id')))
                print("This call duration   : {0}".format(tcall.get('seconds_call_duration')))
            self.exit[0]()
        except Exception as exc:
            print("Final page exception: {0}".format(exc))
        return True


    def unknown_page(self, my_actions, query_info):
        try:
            my_actions.add(Play(text_to_say='I find myself on an unknown page.'))
        except Exception as exc:
            print("Unknown page exception: {0}".format(exc))
        return True

The application code.

import sys, os
sys.path.append(os.path.abspath('../..'))

from aculab.telephony_rest_api import *
from aculab.simple_server import *
from aculab.base_application import ApplicationBase

class Application(ApplicationBase):

    def __init__(self):
        ApplicationBase.__init__(self)


    def responder(self, query, start_response):

        query_info = RESTQuery(query)
        page = query_info.Page

        my_actions = Actions(token='play text sample')

        # on your inbound service, set the first page entry to point to this page
        # e.g., http://<ip address>:<port>/first_page
        if 'first_page' == page:
            play_action = Play(text_to_say='Hello, good evening and welcome.')
            play_action.append_file(file_to_play='welcome.wav')
            my_actions.add(play_action)

        elif 'final_page' == page:
            if self.final_page(my_actions, query_info) is False:
                return None

        elif 'error_page' == page:
            if self.error_page(my_actions, query_info) is False:
                return None

        else:
            if self.unknown_page(my_actions, query_info) is False:
                return None

        response_body = my_actions.get_json()
        response_headers = [('Content-Type', 'application/json; charset=utf-8'), ('Content-Length', str(len(response_body)))]
        start_response('200 OK', response_headers)
        return [response_body]


if __name__ == "__main__":
    application = Application()
    # Set the host and port you want to use in the rest_simple_server.py file.
    # To use SSL also set the key and certificate file.
    ss = SimpleServer(application, simple_server_host, simple_server_port, simple_server_keyfile, simple_server_certfile)
    ss.start()
    print("Hit ctl-break to quit.")

First pageError pageFinal page

declare(encoding='UTF-8');
spl_autoload_register();
header("Content-Type: application/json; charset=UTF-8");

$play = new Aculab\TelephonyRestAPI\Play();
$play->addText('Hello, good evening and welcome');
$play->addFile('welcome.wav');

$response = new Aculab\TelephonyRestAPI\Actions();
$response->setToken('my instance id');
$response->add($play);

print $response;

declare(encoding='UTF-8');
spl_autoload_register();
header("Content-Type: application/json; charset=UTF-8");

$info = \Aculab\TelephonyRestAPI\InstanceInfo::getInstanceInfo();

$error = $info->getErrorResult();
$action = $error->getAction();
$desc = $error->getResult();
if (!is_null($action)) {
    error_log("Error from action \"$action\" with result:\n$desc\n");
} else {
    error_log("Error result:\n$desc\n");
}

$response = new \Aculab\TelephonyRestAPI\Actions();
$response->setToken('Error');

$play = new \Aculab\TelephonyRestAPI\Play();
$play->addText('An error has occurred.');
$response->add($play);

print $response;

declare(encoding='UTF-8');
spl_autoload_register();
header("Content-Type: application/json; charset=UTF-8");

$info = \Aculab\TelephonyRestAPI\InstanceInfo::getInstanceInfo();
$call = $info->getThisCallInfo();
$callid = $call->getCallId();
$duration = $call->getSecondsCallDuration();
error_log("This all id: $callid\nThis call duration: $duration\n");

print '';