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This example demonstrates the Tracer. Tracer is a tracing feature build in camel core to log snapshots of Exchanges while they are routed. This allows you to see:

• how a given Exchange was routed
• a snapshot of the content of the Exchange at any given node it passed in the route

When used Camel will by default log the snapshot at INFO level. This example demonstrates how to persist trace snapshots using JPA into a database. This allows you to store this information and query them from a SQL prompt, giving you full power to analyze the data.

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When the application starts it start:

• in the console
• a GUI for browsing the SQL database

Select the console where the application should prompt you to enter some words. Try entering: Camel
The application should respond with a text quote.

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{snippet:id=e4|lang=xml|url=camel/trunk/examples/camel-example-tracer/src/main/resources/META-INF/spring/camel-context.xml}

See also

• Tracer
• Examples
• Tutorials
• User Guide