Email configuration in mule esb

1. Vamsi Krishna M

2. • Mule ESB is a lightweight Java-based enterprise service bus (ESB)
and integration platform that allows developers to connect
applications together quickly and easily, enabling them to
exchange data. Mule ESB enables easy integration of existing
systems, regardless of the different technologies that the
applications use, including JMS, Web Services, JDBC, HTTP, and
more.

3. • This example shows how we can send email attachment using SMTP
connector to self or another email. We simply put a file in a source
directory and Mule will read the file from the source directory. Using
Mule ESB it’s very easy to read the file from a location. If we had to
read the file using manual coding then we had to write many lines of
code. But using Mule ESB we just simply put a file in a directory and let
the Mule know the file path and Mule does the rest of the thing. You can
put any kind of file to the source for reading. The file that we put into a
source directory will be an attachment to the intended recipient’s mail
address. So finally when we will see the file as an attachment in the
mailbox.

4. • Attachment transformer lets us attach a file or document
which will be sent to the email address.

5. • The SMTP endpoint allows Mule messages to be sent as email or
email attachments with the Simple Mail Transfer Protocol (SMTP)
using Java mail API.

6. • Mule Studio 3.5.1
JDK 1.6
Maven 3
Mule Runtime 3.5.0 CE
Knowledge of XML

7. • Open Mule Studio and create a mule project. Go to File->New-
>Mule Project. Now enter the Project Name, selectRuntime – Mule
Server, check the check box for Use Maven. Now enter the
following information
• Group Id: your Mail(ex. gmail.com)
Artifact Id: project name – file-attachment(automatically
populated when project name is getting typed)
V
• Click Next and verify project Location and JRE/JDK are set
correctly. Click Finishersion: Mule studio generates default

8. • Now drag and drop the elements from right side of the Mule
studio as shown below in the picture.

10. Browse and select the path from where a file will be read for an attachment.
Logger component properties

11. • File to String transformer properties
• File-to-Strong transformer just transforms the file object to
human readable string format. We will not set any property
for this element
Attachment transformer properties

12. • Using attachment transformer we can set payload from
previous flow as an attachment. We have to select Content
Type, operation as Set Attachment, Name, Value

13. • SMTP connector properties
For SMTP connector we have to input email host, user name, password,
port under Basic Settings and To Address, From Address, Subject under
Email Information.

14. • The whole XML file of entire flow
• <?xml version="1.0" encoding="UTF-8"?>
•
• <mule xmlns:smtp="http://www.mulesoft.org/schema/mule/smtp"
• xmlns:file="http://www.mulesoft.org/schema/mule/file" xmlns="http://www.mulesoft.org/schema/mule/core"
• xmlns:doc="http://www.mulesoft.org/schema/mule/documentation"
• xmlns:spring="http://www.springframework.org/schema/beans" version="CE-3.5.0"
• xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
• xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-current.xsd
• http://www.mulesoft.org/schema/mule/core http://www.mulesoft.org/schema/mule/core/current/mule.xsd
• http://www.mulesoft.org/schema/mule/file http://www.mulesoft.org/schema/mule/file/current/mule-file.xsd
• http://www.mulesoft.org/schema/mule/smtp http://www.mulesoft.org/schema/mule/smtp/current/mule-
smtp.xsd">
• <flow name="file-attachmentFlow1" doc:name="file-attachmentFlow1">
• <file:inbound-endpoint path="D:AnypointWorkspacesource"
• responseTimeout="10000" doc:name="File" />
• <logger message="#[payload]" level="INFO" doc:name="Logger" />
• <file:file-to-string-transformer
• doc:name="File to String" />
• <logger message="#[payload]" level="INFO" doc:name="Logger" />
• <set-attachment attachmentName="attachment" value="#[payload]"
• contentType="text/plain" doc:name="Attachment" />
• <logger message="#[payload]" level="INFO" doc:name="Logger" />
• <smtp:outbound-endpoint host="mail.domain.com"
• user="emailAddress@domain.com" password="password" to="emailAddress@domain.com"
• from="emailAddress@domain.com" subject="Test Email" responseTimeout="10000"
• doc:name="SMTP" />
• <logger message="#[payload]" level="INFO" doc:name="Logger" />
• </flow>
• </mule>

15. • Now create a text file called file-attachment.txt and put it under
selected path, i.e., as per the above XML the file path
is E:AnypointWorkspacesource.
• Do right-click on file-attachment.xml and click on Run As -> Mule
Application with Maven. Once the application up and running you will
get the console output and email attachment in your mailbox where
you have sent the email.

16. • Output in console
• INFO 2015-12-17 09:25:46,372 [[file-attachment].connector.file.mule.default.receiver.01]
org.mule.transport.file.FileMessageReceiver: Lock obtained on file:
E:AnypointWorkspacesourcefile-attachment.txt
• INFO 2015-12-17 09:25:46,404 [[file-attachment].file-attachmentFlow1.stage1.02]
org.mule.api.processor.LoggerMessageProcessor:
org.mule.transport.file.ReceiverFileInputStream@6a150e
• INFO 2015-12-17 09:25:46,406 [[file-attachment].file-attachmentFlow1.stage1.02]
org.mule.api.processor.LoggerMessageProcessor: This is a file content
• INFO 2015-12-17 09:25:46,407 [[file-attachment].file-attachmentFlow1.stage1.02]
org.mule.api.processor.LoggerMessageProcessor: This is a file content
• INFO 2015-12-17 09:25:46,419 [[file-attachment].file-attachmentFlow1.stage1.02]
org.mule.api.processor.LoggerMessageProcessor: This is a file content
• INFO 2015-12-17 09:25:46,422 [[file-
attachment].connector.smtp.mule.default.dispatcher.01]
org.mule.transport.service.DefaultTransportServiceDescriptor: Loading default outbound
transformer: org.mule.transport.email.transformers.ObjectToMimeMessage
• INFO 2015-12-17 09:25:46,428 [[file-
attachment].connector.smtp.mule.default.dispatcher.01]
org.mule.lifecycle.AbstractLifecycleManager: Initialising:
'connector.smtp.mule.default.dispatcher.1213248'. Object is: SmtpMessageDispatcher
• INFO 2015-12-17 09:25:48,878 [[file-
attachment].connector.smtp.mule.default.dispatcher.01]
org.mule.lifecycle.AbstractLifecycleManager: Starting:
'connector.smtp.mule.default.dispatcher.1213248'. Object is: SmtpMessageDispatcher

17. • Click on the attachment. You will see the below output in the browser.