07_StructureApps

Question 1

Where does the config.yaml file go?

Answer 1

src/main/resources

Question 2

What can’t have their own error handling strategy?

Answer 2

subflows

Question 3

What are flows calles that do not have event sources?

Answer 3

Private Flows

Question 4

How are subflows executed?

Answer 4

As if the processors were still in the calling flow. (Basically as if the processors are in the flow, so it goes in at the start and comes out at the end, they are called via flow reference).

Question 5

How are subflows called?

Answer 5

Flow reference

Question 6

What is the purpose of the Flow Reference component?

Answer 6

To pass events to other flows and subflows

Question 7

Variables persist through all flows unless … ?

Answer 7

the event crosses a transport boundary

Question 8

When using Flow Reference are events passed asynchronously or synchronously?

Answer 8

Synchronously

Question 9

What connector can you use to pass events asychnronoulsy between flows?

Answer 9

VM Connector.

Question 10

What 2 things can queues be?

Answer 10

Transient and Persistent

Question 11

Explain transient queues?

Answer 11

They are faster than persistent queues, but are lost in the case of a system crash.

Question 12

Explain persistent queues?

Answer 12

Slower but reliable.

Question 13

Why do we want to separate apps into multiple configuration files?

Answer 13

Monolithic files are difficult to read and maintain. It’ll be easier to read/work with/test and again, more maintainable.

Question 14

How should you refer to global elements?

Answer 14

Put them all in one config file, so that all the other files reference them and if a gloval element is specific to and only used in one file then it makes sense to keep it in that file.

Question 15

A global element is specific to and only used in file A. Should it be kept in that file or in the global config file?

Answer 15

The file.

Question 16

Do you want all your flows to be in 1 application/project?

Answer 16

No.

Question 17

How should you handle all your flows

Answer 17

Seperate functionality into multiple applications to allow managing and monitoring of them as separate entities. USe different, incomparible JAR files.

Question 18

How do you run more than one application at a time in Anypoint Studio?

Answer 18

creating a run configuration

Question 19

How do you share global elements between applications?

Answer 19

A domain project can be used to share global configuration elements between applications.

Question 20

How does having a domain project benefit you?

Answer 20

You are able to share global elements between applications, which ensures consitency as any changes are alll set in one place, it can expose multiple services within the domain on the same port, share the connection to persistent storage and call flows in other applications using the VM connector.

Question 21

Who is the domain project available for?

Answer 21

customer-hosted Mule runtimes ( not on CloudHub)

Question 22

What is the process to share global elements between applications?

Answer 22

1. Create a Mule Domain Project and associate Mule applications with a domain. 2. Add global element configurations to the domain project

Question 23

Where (do I think based on a MS screenshot) should the config file for global elements go?

Answer 23

src/main/mule

Question 24

What do application properties provide?

Answer 24

An easier way to manage connector properties, credentials and other configurations. Replace static values.

Question 25

Where are the application properties defined?

Answer 25

In a config file (either .yaml file or a .properties file)

Question 26

Can application properties be overridden?

Answer 26

Yes - by the system properties when deploying to different environments.

Question 27

What folder should the application properties file be kept in?

Answer 27

src/main/resources folder.

Question 28

What 2 places can you access the application properties that you deifned in the config.yaml file (and created a config properties global element for)?

Answer 28

Global element configurations and evetn processors. Or DataWeave expressions.

Question 29

How do you use the application properties (DataWeave expressions)

Answer 29

{port: p(‘db.port’)}

Question 30

How do you use the application properties (In global element configurations and event processors)

Answer 30

${db.port}

Question 31

What do you use to override property values when deploying an application to a different environment (like dev, qa, production).

Answer 31

system properties

Question 32

Where do you set the system properties?

Answer 32

Anypoint Studio 
(Run > Run Configurations > Arguments)

Question 33

What should the src/test folders contain?

Answer 33

Only files that are needed at development time. As they are not included in the application JAR when it is packaged.

Question 34

What does POM stand for?

Answer 34

Project Object Model

Question 35

What is the tool that is used for building and managing any Java-based project?

Answer 35

Maven.

Question 36

How does maven manage a projec’ts build, reporitng and documentation?

Answer 36

POM (Project Object Model) - A central piece of information

Question 37

What does a Maven build produce one or more of?

Answer 37

Artifacts (like a compiled JAR file) - each artifact has a group ID, artifact ID and a version string

Question 38

What is a POM?

Answer 38

An XML file that contains information about the project and configuration details used by Maven to build the project.

Question 39

What’s included in a POM?

Answer 39

Project info like it’s versions, descriptions, developers and more. Project dependencies. The plugins or goals that can be executed.

Question 40

How can you access the Metadata editor?

Answer 40

• Transform Message componenet
• Metadata tab in properties view for most processors
• project’s menu in Package Explorer

Question 41

Where is the application metadata stored? (file and folder)

Answer 41

file: application-types.xml
folder: src/main/resources