Apache Camel - Tips, Tweaks and Tricks

Apache Camel

3 Dec 2016     Michael Kirby

Apache Camel recently rose to the top the market of Enterprise integration as being a tool which can effectively implement enterprise integration patterns. The software contains some extremely unique features which can be used to effectively implement enterprise integration patterns. It is being used by top organizations worldwide and many organizations are also switching to the tool for better performance of their business and enterprise models. It works on a message oriented structure wherein the components of the system interact with each other with the help of messages taking the form of inputs and outputs. With Apache camel you document a set of patterns and blueprints in order to design a large system of components in the best possible way. These systems may include subsystems and processes running on the same or different platform as specified by the user.

Apache Camel has the capabilities of interfacing EIPs, base objects, implementations, debugging tools and much more which saves a lot of time when you are working with a heavy database. Some of its unique features are that of defining routing and mediation rules in a number of different specific languages and its ability to work with transport messages in all forms.

There are certain other features of Apache Camel which come in extremely handy while working with it and can be put to use in several situations. Knowledge of these extra features will add up to you existing knowledge base of Camel and provide you an added edge as an Apache Camel Expert. Let’s look at some of these added features of Apache Camel.

Message transformation through pluggable data formats and type conversion
With Apache Camel now you can undergo different type conversion strategies using its TypeConverter interface. This interface can be customized on a CamelContext. Also, the default implementation, i.e. DefualtTypeConverter, implements pluggable strategies to load type converters with the help of TypeConverterLoader. Messages can be transformed between CSV, EDI, flatpack,HL7 and more.

Use of Pluggable languages in order to create expressions or predicates.
Camel uses a variety of different languages to implement pluggable expressions. This in turn supports the dynamic ruling property of Apache camel to create Enterprise integration patterns. With Apache a number of languages can be used such as EL, JXpath, Mvel, OGNL, BeanShell etc.

Integration of Beans and POJOs
Using Bean components, particular methods can be invoked, using which the method to use is figured out and the method to bind the message to the parameter is stated. This Bean method invocation is done through POJO consuming in a very simplified manner.

Excellent support for testing of distributed and asynchronous systems
Knowing how difficult testing of distributed and asynchronous systems is, the mock, test and DataSet endpoints of camel work amazing with the Camel Testing framework to simplify testing and integration of such systems.

Having expertise in Apache Camel will go a long way in making your career fulfilling and increase its pace. It has a number of unique features and concepts which can be used to simplify enterprise integration. Getting well versed in all the aspects of Apache Camel may be a time consuming task but it is definitely worth the work.

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