Add a Condition to Your Flow Logic

In this section of the tutorial, you learn how to add a condition to your flow to send an email to the regional leader if the Salesforce case is escalated, otherwise your Mule application sends a message to Slack.

Before You Begin

Complete these procedures:

Integrate Salesforce Data into Slack and Email Notifications.
Create a Configuration File for Slack and Salesforce and configure your Salesforce integration.
Extract Payload Information to Variables.

Define the Behavior for When the Case Is Escalated

Use a Choice router to define behaviors based on specific conditions. In this case, choose to send an email if the case is escalated.

In Anypoint Code Builder, open your new-case-salesforce.xml file.
Click the (Add component) icon for the Logger component:
Type choice and select Choice under Flow Control:

Add the <when/> and <otherwise/> elements:

Search result for 'when', with resulting highlighted text reading 'mule:when'

<choice doc:name="Choice">
   <when doc:name="When" >

   </when>
   <otherwise doc:name="Otherwise" >

   </otherwise>

</choice>

For better readability of your Mule flow, update the name of the <choice/>, <when/>, and <otherwise/> elements:

<choice doc:name="Is Case Escalated?">
  <when doc:name="Escalated" >

  </when>
  <otherwise doc:name="Not Escalated" >

  </otherwise>
</choice>

Define the when branch to execute if the variable casestatus equals Escalated:

<choice doc:name="Is Case Escalated?">
  <when doc:name="Escalated" expression='#[vars.casestatus == "Escalated"]'>

  </when>
  <otherwise doc:name="Not Escalated" >

  </otherwise>
</choice>

Add an Email Connector

To configure the <when/> element, you must first configure operations from the Anypoint Connector for Email (Email Connector):

In Anypoint Code Builder, open your new-case-salesforce.xml file, and add a new line under your <salesforce:sfdc-config/> element.

Type smtp and select email:smtp-config:

<email:smtp-config name="Email_SMTP">
  <email:smtps-connection host="${email.host}" user="${email.username}" password="${email.password}">
   <tls:context>
     <tls:trust-store insecure="true" />
   </tls:context>
  </email:smtps-connection>
</email:smtp-config>

Click the (Add component) icon after the Escalated section:
Type send and select Send from the Email section:

Configure send using the following code sample:

<email:send config-ref="Email_SMTP" doc:name="Send Escalation Email" subject='#["Case " ++ vars.casenumber ++ " was escalated"]'>
  <email:to-addresses>
    <email:to-address value="${email.username}" />
  </email:to-addresses>
  <email:body contentType="text/html" >
    <email:content ><![CDATA[#["Please handle this case. " ++ payload]]]></email:content>
</email:body>
</email:send>

To be able to test the application, temporarily add a <logger/> element inside your <otherwise/> element:
```
<logger doc:name="Temporary Logger" message='#["Please look into this new Case: " ++ payload]'/>
```

Examine your full Choice router configuration:

<choice doc:name="Is Case Escalated?">
  <when doc:name="Escalated" expression='#[vars.casestatus == "Escalated"]'>
      <email:send config-ref="Email_SMTP" doc:name="Send Escalation Email" subject='#["Case " ++ vars.casenumber ++ " was escalated"]'>
             <email:to-addresses>
               <email:to-address value="${email.username}" />
            </email:to-addresses>
            <email:body contentType="text/html" >
                   <email:content ><![CDATA[#["Please handle this case. " ++ payload]]]></email:content>
                 </email:body>
           </email:send>
  </when>
  <otherwise doc:name="Not Escalated" >
    <logger doc:name="Temporary Logger" message='#["Please look into this new Case: " ++ payload]'/>
  </otherwise>
</choice>

Test Your Mule Application

To expedite the test, remove the breakpoint for your Logger component.
Select Run > Start Debugging (F5).
After your application deploys successfully, log in to your Salesforce account.
From App Launcher, select Service:
Select Cases > New Case:
Ensure that the Status of the new case is Escalated.
After a few seconds, ensure that your configured email account received an email with the information configured in the case:
```
Please handle this case. Case Number: 00001030, Origin: Phone, Case Type: , Priority: Medium, Status: Escalated
```
Proceed to Configure Slack Integration to learn how to configure the Slack message for any case that was not escalated.