See why Gartner names MuleSoft a Magic Quadrant leader . Delivered as a unified integration experience, CloudHub™ and Mule ESB™ (enterprise service . Can anyone tell me where i can get the Mule In Action PDF( VERSION). . stansaturtowi.ga But Mule In Action Edition 2 only covers version of Mule ESB and not any. Mule 2: A Developer's Guide to ESB and Integration Platform. Acknowledgements. We'd like to thank all the people who helped make this book possible: Ross.
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If you're familiar with Java, this book will enable you to create a lightweight enterprise service bus using the Mule framework. Starting with the. Mule Architecture & Components people about Mule ESB & how to simplify integration .. And, you will receive one of the Manning books!. Mule, as you've seen through the course of this book, offers a wealth of features ESB overview and then dives into rich examples covering core concepts like To download their free eBook in PDF, ePub, and Kindle formats, owners.
It covers the essentials, such as using the Mule IDE, writing a configuration file, routing messages, and testing your application. It also covers advanced topics such as developing Mule applications using Maven and using advanced message routing. Working with Maven Maven can help you develop Mule applications, so if you are ready to plunge into this new world, this topic is a must-read.
Creating Configuration Files Creating configuration files is at the heart of Mule development. Read this topic to learn the basics of how to do this. How to Test Your Application Testing is part and parcel of application development. Learn the Mule approach to testing here.
Message Routing If you are ready to start moving data around your Mule application, this topic will help you understand the basics. Advanced Message Routing Routing messages can get complicated. Read this topic to learn some of the deeper, lesser-known methods of message routing with Mule.
The Mule IDE allows you to quickly start a new project, which you can base on one of the existing examples, or just create a new configuration file by selecting the transports you want to use.
This lesson walks you through creating a new application called myHelloApp, which will be based on the Hello World Example, running the application, and creating a new configuration file for the project. Mule IDE 2. Create the Application 1. Enter the name myHelloApp, ensuring that there is no space in the project name. Ensure that Mule 3 is your default Mule distribution or selected as the project specific one.
Click Add sample project content and select the Hello example. Click Next, and then click the Libraries tab and verify that the Java 5 or later library is installed and available on the build path.
You will now see the myHelloApp project in the navigation pane on the left. You can expand its folders to see the source code, configuration files, and more. Let's run the application to see it in action. Run the Application 1. A new run configuration is created automatically and the server is started. The application runs, initializing Mule.
For simplicity, we'll call the new configuration file my-hello-config. Click Browse Change the default name from mule-config. You can use any name you like, as long as it is unique within the project and has an. If you use the name of an existing file, it will overwrite that file.
Open the new configuration file in the Eclipse editor. You can add global elements anywhere below the namespace declarations, which are at the top of the file. Eclipse provides a fast and error-proof method for entering these elements. Double-click the element in the list that you want, and Eclipse enters the opening and closing tags for that element.
You can also hover over a tag to see a description of the element and its supported attributes. Then make the following changes. Since the Mule IDE does not yet natively support the new deployment structure of Mule 3, you will need to do the packaging manually to conform to the Mule application format.
Creating an Application Using Maven Creating an Application Using Maven [ Create a New Project ] [ Build the Application ] Mule's integrated support for the Maven project management tool means that you can quickly and easily create a new Mule project right from the command line.
Maven 3. Maven 2. Mule provides a Maven archetype project wizard for creating new Mule projects. Before you can use it, you must sdd the following to the file settings. Navigate to the parent directory where you want to create this new project. Next, you will execute the archetype and generate the code. If this is your first time running this command, Maven will download the archetype for you. For an explanation of these see the project archetype documentation.
Please enter at least one module name note this is a limitation of the archetype, you must specify at least one item. Maven will now create a skeleton project structure for you.
You can now browse the myHelloApp project structure. It should look like this: myHelloApp --assembly. Mule will detect your application archive and automatically deploy it. If there are any errors in your configuration you will need to correct the, repackage and copy the archive over again. To deploy your application to additional Mule instances, you can repeat the last two steps for each instance.
You will walk through creating a configuration file for the Hello World application. You can also configure Mule to create objects that can be pooled.
We can also use a different way to specify the implementation of the component. Here you can directly reference a spring-bean from the application context. Section 8 Mule Entry Point Resolving One thing we haven't discussed yet is how Mule can determine which method to call on your component.
Your component often is just a simple spring bean or POJO, which has multiple methods. The default configuration for Mule is to use a set of entry point resolvers to determine which method to call on your bean. Mule uses the following steps to determine which method to invoke on your POJO. So if you set this message property to helloWorld, Mule will look for a method with that name on your bean. Mule provides an interface, org.
Callable , you can implement. If Mule finds this interface on your POJO it will invoke the onCall method of this interface, when a message is received for this component. This uses the CallableEntryPointResolver. If there is a transformer configured, Mule will use the return type of this transformer to try and determine if there is a method which accepts this type.
If this is found Mule will invoke that method. You then use the XSI namespace to declare the locations of the schemas. For example: You can now browse the myHelloApp project structure. For example. The ChitChatter component that adds some additional conversation to the message it receives A message is triggered by input through an http endpoint and the outbound message is also written out through the http response.
System error handling logs errors. Because we're going to send the string through HTTP. The Hello World example includes a Java class that performs this transformation. This configuration also demonstrates user and system error handling. Add the Description Optionally.
The Greeter component that adds a greeting to the message it receives 2. User error handling returns an error message to the end user. Configure Global Custom Transformers Similarly. To see which attributes you can set for a connector.
If you are creating only one configuration file for your entire application. The exchange pattern to follow. Configure Models and Services You are now ready to add your services. In this case. There is no inbound router specified.
For details on the elements you can configure in a service. The Hello World example has four services. HTTP expects a synchronous response. Where the message originates.
The transformer to use. The inbound endpoint defines which messages this service will handle by specifying the following: The transport. A filter is configured to explicitly exclude any request for the favicon.
No connector is referenced so the default HTTP connector will be used. Services are contained within models. Here we reference one of the global transformers we defined earlier in the configuration.. This inbound endpoint specifies that only messages that are received on http: Configure the Component. The code for the Greeter component is below. Mule automatically discovers the correct method in the Java class to execute the entry point by matching the return type on the transformer in this case.
For information on other ways of resolving the entry point. NameString to the methods in the component. Spring Bean. If a message does not meet the criteria of the first router. JSR script.
We specify this in the outbound section. The component can be a plain Java class. To do this. The component is the next element to configure. If invalid. Flow-based configuration allows a more flexible model than service and can be useful for processing messages where the service-based model is not required. Configure the Final Service There is one last service in the example: This service transforms the message. If the message was not transformed correctly and the payload contains an exception.
If you deploy your services on separate Mule instances instead. When you configure the services that will handle the message in each of these cases. This error handler returns user error messages to caller. Exception strategies allow you to handle messages when there is a system error: These error-handling services are defined below: Errors could also be routed elsewhere. Handle any unexpected errors. Configure Error Handling Mule provides support for error handling for unexpected errors.
In this case there is no outbound. VM is an internal messaging service that routes messages between services running inside the same JVM for faster processing.
Instead of using an outbound endpoint. Open a web browser and enter the URL http: It then passed the message to the ChitChat service for processing. This assumes you previously packaged and deployed the application to Mule. Run the Application To run the application. Test the Application It's time to test the application.
This URL passed "Ross" to the endpoint http: If you examine the test cases in the Hello World example. If you used the Maven archetype to create your project. The org. Mule provides an abstract JUnit test case called org. This means. More detail on Functional Testing with Mule can be found in the documentation. It displays the greeting with your name.