What are Camel routes?
A Camel route is where the integration flow is defined. For example to integrate two systems then a Camel route can be coded to specify how these systems are integrated. An example could be to take files from a FTP server and send to a ActiveMQ messaging system. This can be coded in a route using Java with the Java DSL.
How do you make a Camel route?
To create a route in Camel, you first define it in code. This is called a route definition, and it is usually written in Java or XML. Then, you start Camel, passing it your route definition. Camel reads the route definition and creates the route inside the Camel Context.
What is exchange property in Camel?
An Exchange is the message container holding the information during the entire routing of a Message received by a Consumer . A new Message is created, the request is set as the body of the Message and depending on the Consumer other Endpoint and protocol related information is added as headers on the Message .
What is Camel route builder?
Short: The basic definition given by the official apache camel docu states: The RouteBuilder is a base class which is derived from to create routing rules using the DSL. Instances of RouteBuilder are then added to the CamelContext. Long: Routebuilder is an abstract class.
How do you call a Camel route?
If the bean is dedicated to Camel routes and under your control, the best you can do is to refactor the bean.
- Remove the method parameters, set them on the message exchange and inject them with @Header , @Property.
- Split the bean into very small beans with only one method to get rid of the method names.
What is Camel used for?
Camels have been used by humans since ancient times. They have been used for transportation, as well as a replacement for beef cattle. The nomads of Africa’s Saharan region continue to use dromedary camels in their traditional way of life for milk, wool, and transportation.
What is Route template?
A Route template is as its name implies a template for a route, which are used to create routes from a set of input parameters. Another way of think is that route templates are parameterized routes. Route template + input parameters ⇒ route. From a route template you can create one or more routes.
How do you put a header on a camel route?
setHeader() creates a header that exist within the current route. You can create a header like . setHeader(“myHeader”, “myHeaderValue”) . Use headers to access dynamic properties during your route by .
What is Bean in Camel?
Bean as endpoint The source for the bean is just a plain POJO: Camel will use Bean Binding to invoke the sayHello method, by converting the Exchange’s In body to the String type and storing the output of the method on the Exchange Out body.
What is Camel processor?
The Processor interface is used for implement consumers of message exchanges or to implement a Message Translator, and other use-cases.
How to override a property value in camel?
You can also define property placeholders in the various attributes on the tag such as trace as shown here: It is possible to override a property value at runtime using a JVM System property without the need to restart the application to pick up the change.
How are property Placeholders used in camel core?
Camel now provides a new PropertiesComponent in camel-core which allows you to use property placeholders when defining Camel Endpoint URIs. This works much like you would do if using Spring’s tag. However Spring have a limitation which prevents 3rd party frameworks to leverage Spring property placeholders to the fullest.
What does camel 2.9 do for property names?
Camel 2.9 If true, first attempt resolution of property name augmented with propertyPrefix and propertySuffix before falling back the plain property name specified. If false, only the augmented property name is searched. Camel 2.9 The token to indicate the beginning of a property token.
How to use custom propertiesparser in Apache Camel?
To use a custom PropertiesParser. The option is a org.apache.camel.component.properties.PropertiesParser type. Sets the JVM system property mode (0 = never, 1 = fallback, 2 = override). The default mode (override) is to use system properties if present, and override any existing properties.