Movilizer V: Backend en la nube con MAF

Tras crear la Movelet de login necesitamos algún backend con el que poder leer los datos enviados desde el dispositivo y después comprobar si son correctos y devolver una respuesta.

Al utilizar conexiones Online Sync las comunicaciones pasan por la nube y quedan registradas, desde ahí pueden ser redirigidas al endpoint mantenido en la Movelet hacia el backend deseado o simplemente tratar dichos datos directamente en la nube.

En el caso que nos ocupa queremos leer y responder a esas comunicaciones directamente desde la nube, usando scripts programados en el lenguaje de programación Groovy.

Antes necesitaremos asegurarnos que nuestro entorno de desarrollo, Eclipse, funciona correctamente.

<MovilizerRequest systemId="${#Project#SystemID}" systemPassword="${#Project#Password}" xmlns="http://movilitas.com/movilizer/v16">


    <moveletDelete moveletKey="SCN_LOGIN" />


    <moveletSet>


        <movelet moveletKey="SCN_LOGIN" initialQuestionKey="SCR_SELECT_FLOW" moveletType="MULTI" transactional="true">


<!-- ========================================================================================================================================
    Epsilon Screen
========================================================================================================================================= -->

            <question key="SCR_SELECT_FLOW" type="41">

                <answer key="ANS_SELECT_FLOW" nextQuestionKey="END" />


                <restriction position="1" nextQuestionKey="SCR_LOGIN_CUI1">
                    <condition>$global:login["AUTHENTICATE"] != true</condition>
                </restriction>

                <restriction position="2" nextQuestionKey="CANCEL">
                    <condition>$global:login["AUTHENTICATE"]</condition>
                </restriction>


                <validation position="1" type="WARNING">
                    <condition>$global:login["AUTHENTICATE"]</condition>
                    <text>Do you want to close your user session?</text>
                </validation>


                <onLeaveOkPersistAssignment>
                    if( $global:login["AUTHENTICATE"] )
                    {
                        $global:login["AUTHENTICATE"] = false;
                    }
                </onLeaveOkPersistAssignment>

            </question>






<!-- ========================================================================================================================================
    Complex UI: Form + Image + Form
========================================================================================================================================= -->

            <question key="SCR_LOGIN_CUI1" type="5">

                <answer key="ANS_LOGIN_CUI1_MESSAGE" attributeType="8" nextQuestionKey="SCR_LOGIN_CUI2" dummyAnswer="true" columnSizeType="ROWS" labelFontStyle="BOLD" bgColor="#FF0000" valueFontColor="#FFFFFF" />


                <onEnterAssignment>
                    if( $local:message["ERRO"] )
                    {
                        addAnswer($answer:"ANS_LOGIN_CUI1_MESSAGE", null, null);
                        setAnswerValueByClientKey($answer:"ANS_LOGIN_CUI1_MESSAGE", null, $local:message["HEAD"]);
                    }
                    $local:message = null;
                </onEnterAssignment>

                <complex linearGroupId="CUI_LOGIN" linearPos="1" groupTitle="Login" />
            </question>



            <question key="SCR_LOGIN_CUI2" type="1">

                <answer key="ANS_LOGIN_CUI2_LOGO" nextQuestionKey="SCR_LOGIN_CUI3" />


                <onEnterAssignment>
                    data = call($local:getImageFromInternet)("https://giltesa.com/wp-content/uploads/2018/12/logoLogin.png");
                    setAnswerDataByClientKey($answer:"ANS_LOGIN_CUI2_LOGO", null, data);
                </onEnterAssignment>

                <complex linearGroupId="CUI_LOGIN" linearPos="2" />
            </question>



            <question key="SCR_LOGIN_CUI3" type="5">

                <answer key="ANS_LOGIN_CUI3_USERNAME" nextQuestionKey="SCR_LOGIN_CALLBACK" position="1" columnSizeType="ROWS" labelFontStyle="BOLD">
                    <text>Username:</text>
                </answer>

                <answer key="ANS_LOGIN_CUI3_PASSWORD" nextQuestionKey="SCR_LOGIN_CALLBACK" position="2" attributeType="7" columnSizeType="ROWS" labelFontStyle="BOLD">
                    <text>Password:</text>
                </answer>


                <validation position="1" type="ERROR">
                    <condition>isBLank(username)</condition>
                    <text>The field is mandatory</text>
                    <matchingAssignment>
                        highlight($answer:"ANS_LOGIN_CUI3_USERNAME", null, 0);
                        focus($answer:"ANS_LOGIN_CUI3_USERNAME", null);
                    </matchingAssignment>
                </validation>

                <validation position="2" type="ERROR">
                    <condition>isBLank(password)</condition>
                    <text>The field is mandatory</text>
                    <matchingAssignment>
                        highlight($answer:"ANS_LOGIN_CUI3_PASSWORD", null, 0);
                        focus($answer:"ANS_LOGIN_CUI3_PASSWORD", null);
                    </matchingAssignment>
                </validation>


                <onEnterAssignment>
                    setAnswerValueByClientKey($answer:"ANS_LOGIN_CUI3_USERNAME", null, $global:login["USERNAME"]);
                    setAnswerValueByClientKey($answer:"ANS_LOGIN_CUI3_PASSWORD", null, null);

                    focus( condition(isBlank($global:login["USERNAME"]), $answer:"ANS_LOGIN_CUI3_USERNAME", $answer:"ANS_LOGIN_CUI3_PASSWORD"), null);
                </onEnterAssignment>


                <onLeaveOkPrepareAssignment>
                    clearAllHighlights();

                    username = trim(getAnswerValueByClientKey($answer:"ANS_LOGIN_CUI3_USERNAME", null));
                    password = trim(getAnswerValueByClientKey($answer:"ANS_LOGIN_CUI3_PASSWORD", null));
                </onLeaveOkPrepareAssignment>


                <onLeaveOkPersistAssignment>
                    $local:outContLogin = null;
                    $local:outContLogin["USERNAME"] = toUpperCase(username);
                    $local:outContLogin["PASSWORD"] = password;
                    $local:outContLogin["CONT_KEY"] = "CONT_LOGIN";

                    writeOnlineContainer($local:outContLogin["CONT_KEY"], $local:outContLogin);
                    triggerOnlineSync();
                </onLeaveOkPersistAssignment>


                <complex linearGroupId="CUI_LOGIN" linearPos="3" />
            </question>






<!-- ========================================================================================================================================
    Epsilon Screen
========================================================================================================================================= -->

            <question key="SCR_LOGIN_CALLBACK" type="41">

                <answer key="ANS_LOGIN_CALLBACK" nextQuestionKey="CANCEL" />


                <restriction position="1" nextQuestionKey="SCR_LOGIN_CUI1">
                    <condition>$global:login["AUTHENTICATE"] != true</condition>
                </restriction>


                <onEnterAssignment>
                    $local:inContLogin = readOnlineContainer($local:outContLogin["CONT_KEY"]);

                    if( !hasKey($local:inContLogin, "ACK") )
                    {
                        $global:login["AUTHENTICATE"] = false;

                        $local:message["ERRO"] = true;
                        $local:message["HEAD"] = "Connection error, try again later.";

                    }
                    else{ if( hasKey($local:inContLogin, "ERRORS") )
                    {
                        $global:login["AUTHENTICATE"] = false;
                        $global:login["USERNAME"]     = null;

                        $local:message["ERRO"] = true;
                        $local:message["HEAD"] = call($local:getMessage)( $local:inContLogin["ERRORS"] );

                    }
                    else{ if( $local:inContLogin["SUCCESS"] != true )
                    {
                        $global:login["AUTHENTICATE"] = false;
                        $global:login["USERNAME"]     = null;

                        $local:message["ERRO"] = true;
                        $local:message["HEAD"] = call($local:getMessage)( $local:inContLogin["MESSAGES"] );

                    }
                    else
                    {
                        $global:login["AUTHENTICATE"] = true;
                        $global:login["USERNAME"]     = $local:outContLogin["USERNAME"];

                    }}}
                </onEnterAssignment>

            </question>






<!-- ========================================================================================================================================
    MEL code of the Movelet header
========================================================================================================================================= -->

            <syncDownloadAssignment>

                $local:getMessage = function( array )
                {
                    text = "";
                    forasc( i : array ){
                        text = concat(text, array[i], "\n");
                    }
                    return trim(text);
                };


                $local:getImageFromInternet = function( path )
                {
                    result = null;
                    try
                    {
                        connID = connect(path, "GET");
                        result = readBinary(connID);
                    }
                    finally
                    {
                        try{
                            close(connID);
                        }catch(e){
                            exception = e;
                        }
                    }

                    return result;
                };
            </syncDownloadAssignment>


            <name>*Login*</name>


            <nameExpression>condition($global:login["AUTHENTICATE"] != true, "Login", strReplace("Logoff of #1", "#1", $global:login["USERNAME"]))</nameExpression>


            <iconExpression>condition($global:login["AUTHENTICATE"] != true, 20, 21)</iconExpression>


        </movelet>


        <participant participantKey="Test1" name="Test1" deviceAddress="${#Project#Participant}" />


    </moveletSet>


</MovilizerRequest>

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<!-- ========================================================================================================================================

Epsilon Screen

========================================================================================================================================= -->

<condition>$global:login["AUTHENTICATE"] != true</condition>

</restriction>

<condition>$global:login["AUTHENTICATE"]</condition>

</restriction>

<condition>$global:login["AUTHENTICATE"]</condition>

<text>Do you want to close your user session?</text>

</validation>

if( $global:login["AUTHENTICATE"] )

{

$global:login["AUTHENTICATE"] = false;

}

</onLeaveOkPersistAssignment>

</question>

<!-- ========================================================================================================================================

Complex UI: Form + Image + Form

========================================================================================================================================= -->

if( $local:message["ERRO"] )

{

addAnswer($answer:"ANS_LOGIN_CUI1_MESSAGE", null, null);

setAnswerValueByClientKey($answer:"ANS_LOGIN_CUI1_MESSAGE", null, $local:message["HEAD"]);

}

$local:message = null;

</onEnterAssignment>

</question>

data = call($local:getImageFromInternet)("https://giltesa.com/wp-content/uploads/2018/12/logoLogin.png");

setAnswerDataByClientKey($answer:"ANS_LOGIN_CUI2_LOGO", null, data);

</onEnterAssignment>

</question>

<text>Username:</text>

</answer>

<text>Password:</text>

</answer>

<condition>isBLank(username)</condition>

<text>The field is mandatory</text>

highlight($answer:"ANS_LOGIN_CUI3_USERNAME", null, 0);

focus($answer:"ANS_LOGIN_CUI3_USERNAME", null);

</matchingAssignment>

</validation>

<condition>isBLank(password)</condition>

<text>The field is mandatory</text>

highlight($answer:"ANS_LOGIN_CUI3_PASSWORD", null, 0);

focus($answer:"ANS_LOGIN_CUI3_PASSWORD", null);

</matchingAssignment>

</validation>

setAnswerValueByClientKey($answer:"ANS_LOGIN_CUI3_USERNAME", null, $global:login["USERNAME"]);

setAnswerValueByClientKey($answer:"ANS_LOGIN_CUI3_PASSWORD", null, null);

focus( condition(isBlank($global:login["USERNAME"]), $answer:"ANS_LOGIN_CUI3_USERNAME", $answer:"ANS_LOGIN_CUI3_PASSWORD"), null);

</onEnterAssignment>

clearAllHighlights();

username = trim(getAnswerValueByClientKey($answer:"ANS_LOGIN_CUI3_USERNAME", null));

password = trim(getAnswerValueByClientKey($answer:"ANS_LOGIN_CUI3_PASSWORD", null));

</onLeaveOkPrepareAssignment>

$local:outContLogin = null;

$local:outContLogin["USERNAME"] = toUpperCase(username);

$local:outContLogin["PASSWORD"] = password;

$local:outContLogin["CONT_KEY"] = "CONT_LOGIN";

writeOnlineContainer($local:outContLogin["CONT_KEY"], $local:outContLogin);

triggerOnlineSync();

</onLeaveOkPersistAssignment>

</question>

<!-- ========================================================================================================================================

Epsilon Screen

========================================================================================================================================= -->

<condition>$global:login["AUTHENTICATE"] != true</condition>

</restriction>

$local:inContLogin = readOnlineContainer($local:outContLogin["CONT_KEY"]);

if( !hasKey($local:inContLogin, "ACK") )

{

$global:login["AUTHENTICATE"] = false;

$local:message["ERRO"] = true;

$local:message["HEAD"] = "Connection error, try again later.";

}

else{ if( hasKey($local:inContLogin, "ERRORS") )

{

$global:login["AUTHENTICATE"] = false;

$global:login["USERNAME"] = null;

$local:message["ERRO"] = true;

$local:message["HEAD"] = call($local:getMessage)( $local:inContLogin["ERRORS"] );

}

else{ if( $local:inContLogin["SUCCESS"] != true )

{

$global:login["AUTHENTICATE"] = false;

$global:login["USERNAME"] = null;

$local:message["ERRO"] = true;

$local:message["HEAD"] = call($local:getMessage)( $local:inContLogin["MESSAGES"] );

}

else

{

$global:login["AUTHENTICATE"] = true;

$global:login["USERNAME"] = $local:outContLogin["USERNAME"];

}}}

</onEnterAssignment>

</question>

<!-- ========================================================================================================================================

MEL code of the Movelet header

========================================================================================================================================= -->

$local:getMessage = function( array )

{

text = "";

forasc( i : array ){

text = concat(text, array[i], "\n");

}

return trim(text);

};

$local:getImageFromInternet = function( path )

{

result = null;

try

{

connID = connect(path, "GET");

result = readBinary(connID);

}

finally

{

try{

close(connID);

}catch(e){

exception = e;

}

return result;

};

</syncDownloadAssignment>

<name>*Login*</name>

<nameExpression>condition($global:login["AUTHENTICATE"] != true, "Login", strReplace("Logoff of #1", "#1", $global:login["USERNAME"]))</nameExpression>

<iconExpression>condition($global:login["AUTHENTICATE"] != true, 20, 21)</iconExpression>

</movelet>

</moveletSet>

</MovilizerRequest>

import com.movilizer.maf.bo.mappings.container.MAFUploadDataContainer
import com.movilizer.maf.scripting.MAFContext;
import com.movilizer.maf.scripting.access.MAFNotificationGateway;
import org.apache.commons.lang3.StringUtils


MAFContext             context   = mafContext;
MAFNotificationGateway notify    = context.getNotificationManager();
boolean                debugMode = true;


List<MAFUploadDataContainer> dcList = context.getOnlineContainers();


for( MAFUploadDataContainer dc in dcList )
{
    String contKey     = dc.getKey();
    Object requestData = dc.getObject(contKey);
    Hashtable messages = new Hashtable();
    Hashtable errors   = new Hashtable();
    Hashtable reply    = new Hashtable();
    String text;

    try
    {
        if( contKey?.equals("CONT_LOGIN") )
        {
            String username, password, exLine;

            try
            {
                username = requestData.getObject("USERNAME");
                password = requestData.getObject("PASSWORD");
                exLine   = "User [Username=$username]";

                HashMap<String, String > users = new HashMap<>();
                users.put("PEPE",  "1234");
                users.put("SARA",  "1111");
                users.put("CARLA", "qwerty");

                if( users.containsKey(username) && users.get(username).equals(password) )
                {
                    reply.put("SUCCESS", true);
                }
                else
                {
                    reply.put("SUCCESS", false);

                    text = "The access credentials are incorrect.";
                    messages.put(StringUtils.leftPad(messages.size()+"", 3, '0'), text);

                    if( debugMode )
                        notify.writeDebug(text +" "+ exLine, null);
                }

            }
            catch( Exception ex )
            {
                text = "The data received is invalid: $exLine";
                errors.put(StringUtils.leftPad(errors.size()+"", 3, '0'), text);
                notify.writeError(text, ex);
            }

        }//CONT_LOGIN

    }
    catch( Exception ex )
    {
        text = "THERE WAS AN EXCEPTON: " + ex.getMessage();
        errors.clear();
        errors.put(StringUtils.leftPad(errors.size()+"", 3, '0'), text);
        notify.writeError(text, ex);
    }
    finally
    {
        reply.put("ACK", true);

        if( messages.size() > 0 )
        {
            reply.put("MESSAGES", messages);
        }

        if( errors.size() == 0 && reply.size() == 1 )
        {
            errors.put(StringUtils.leftPad(errors.size()+"", 3, '0'), "ERROR: The received container key '$contKey' has no assigned response.");
        }

        if( errors.size() > 0 )
        {
            reply.put("ERRORS", errors);
        }

        context.addOnlineContainerReply(contKey, reply);
    }
}

import com.movilizer.maf.bo.mappings.container.MAFUploadDataContainer

import com.movilizer.maf.scripting.MAFContext;

import com.movilizer.maf.scripting.access.MAFNotificationGateway;

import org.apache.commons.lang3.StringUtils

MAFContext context = mafContext;

MAFNotificationGateway notify = context.getNotificationManager();

boolean debugMode = true;

List<MAFUploadDataContainer> dcList = context.getOnlineContainers();

for( MAFUploadDataContainer dc in dcList )

{

String contKey = dc.getKey();

Object requestData = dc.getObject(contKey);

Hashtable messages = new Hashtable();

Hashtable errors = new Hashtable();

Hashtable reply = new Hashtable();

String text;

try

{

if( contKey?.equals("CONT_LOGIN") )

{

String username, password, exLine;

try

{

username = requestData.getObject("USERNAME");

password = requestData.getObject("PASSWORD");

exLine = "User [Username=$username]";

HashMap<String, String > users = new HashMap<>();

users.put("PEPE", "1234");

users.put("SARA", "1111");

users.put("CARLA", "qwerty");

if( users.containsKey(username) && users.get(username).equals(password) )

{

reply.put("SUCCESS", true);

}

else

{

reply.put("SUCCESS", false);

text = "The access credentials are incorrect.";

messages.put(StringUtils.leftPad(messages.size()+"", 3, '0'), text);

if( debugMode )

notify.writeDebug(text +" "+ exLine, null);

}

catch( Exception ex )

{

text = "The data received is invalid: $exLine";

errors.put(StringUtils.leftPad(errors.size()+"", 3, '0'), text);

notify.writeError(text, ex);

}

}//CONT_LOGIN

}

catch( Exception ex )

{

text = "THERE WAS AN EXCEPTON: " + ex.getMessage();

errors.clear();

errors.put(StringUtils.leftPad(errors.size()+"", 3, '0'), text);

notify.writeError(text, ex);

}

finally

{

reply.put("ACK", true);

if( messages.size() > 0 )

{

reply.put("MESSAGES", messages);

}

if( errors.size() == 0 && reply.size() == 1 )

{

errors.put(StringUtils.leftPad(errors.size()+"", 3, '0'), "ERROR: The received container key '$contKey' has no assigned response.");

}

if( errors.size() > 0 )

{

reply.put("ERRORS", errors);

}

context.addOnlineContainerReply(contKey, reply);

}

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