By Scott Cranton, Jakub Korab
Apache Camel is a de-facto normal for constructing integrations in Java, and is predicated on well-understood firm Integration styles. it really is used inside many advertisement and open resource integration items. Camel makes universal integration projects effortless whereas nonetheless offering the developer with the skill to customise the framework whilst the location calls for it. initiatives similar to protocol mediation, message routing and transformation, and auditing are universal usages of Camel. Apache Camel Developer's Cookbook presents thousands of most sensible perform counsel for utilizing Apache Camel in a layout that is helping you construct your Camel tasks.
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Extra info for Apache Camel Developer's Cookbook
5. stop(); How it works... The CamelContext interface is the heart of the Camel framework. It is responsible for processing messages along routes. ) statement at the start of a route defines an endpoint, or a technology-specific location, that the Camel routing engine uses to fetch messages. Endpoints are defined using URIs, such as in the preceding example, timer:logMessageTimer. The first part of the URI specifies the component that is being used to consume the message, and the remaining is a set of instructions for that specific component.
The EIPs are used within routes defined by the Camel DSLs (Domain Specific Language). info Message Routing The EIPs are first class constructs within the DSL. As such, your integration logic will be able to more clearly express how the message is being routed–that is, which EIP is being used. The more you can use these EIP DSL statements within your Camel code, versus doing a lot of routing within custom Java processors, the easier it will be for you and others to understand what the Camel route is doing for future maintenance.
Routing. contentbasedrouter package. The Spring XML files are located under src/main/ resources/META-INF/spring and prefixed with contentBasedRouter. How to do it... You need to use the choice DSL statement with one or more when statements, with their associated predicate tests, to see if the message should be routed down their path, and an optional otherwise statement that will catch all the messages that do not match any other when predicates. 1. Within your route, create a choice statement with at least one when statement.
Apache Camel Developer's Cookbook by Scott Cranton, Jakub Korab