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Metrics Example with Spring Boot

This code base is an example of using CodaHale Metrics (fka Yammer Metrics) [http://metrics.codahale.com] and Spring Boot [http://projects.spring.io/spring-boot/].

Running the Example

  1. Clone or fork the repository locally
  2. Run gradlew runJar on *nix/Mac or gradlew.bat runJar on Windows
  3. Open browser to http://localhost:8080/test/api

About the Example

This uses Spring Boot to bootstrap the Web Application using embedded Jetty. This happens in the com.sample.metrics.Application class. This class also contains the @EnableMetrics annotation used to enable the Metrics plugin for Spring. We also expose the MetricRegistry using a variety of other plugins and configure it using a JMX reporter. Using this plugin we can now simply add @Timed to any public Spring bean method and automatically create a timer that wraps the method. The RestProvider and TestController provide examples of this. The RestProvider is used with an InstrumentedHttpClient to automatically instrument the Apache HTTP Client used to fetch API responses. The TestController is a simple Spring MVC endpoint to test everything.