A JavaEE 7 CDI interceptor which provides monitoring capabilities for called methods.
It provides an easy way to log what arguments were passed into a method and what was returned by the method. On top of this, the execution time for a method invocation is measured and logged.
The easiest way is to add osisis as a maven dependency.
<dependency>
<groupId>de.slackspace</groupId>
<artifactId>osiris</artifactId>
<version>1.0.1</version>
</dependency>
Osiris uses slf4j to log method invocations. You need to make sure that your project uses slf4j API for logging to your desired logging framework.
Only Java versions > 1.7 are supported.
The usage is fairly easy, just drop the library as a dependency into your project and annotate the methods you wish to monitor.
NOTE: Please note that monitoring only works for CDI managed beans and public methods.
@Stateless
public class Calculator {
@Monitored(layer = "BUSINESS", useCase = "Adding numbers")
public int Add(int x, int y) {
return x + y;
}
}This will result in the following logging messages:
BUSINESS - UseCase: [Adding numbers] Thread: [http-listener-1(2)] Method: [my.package.Calculator:Add] Args: [10, 20]]]
BUSINESS - UseCase: [Adding numbers] Thread: [http-listener-1(2)] Method: [my.package.Calculator:Add] Took: [61 ms] Returned: [30]]]
NOTE: The layer parameter of the annotation is used as the logger name, so please make sure that the logger is configured properly in your logging framework. That means, if you use Business as the layer name, you need to configure a logger called Business in your logging framework.
All logging messages will be logged in the DEBUG level.