Spring Logging Interceptor

... was build for every Spring developer and needs to be placed in every spring project! :)

##About This is a small library for Spring which will give you the ability to add a logging interceptor to spring to log all http requests. You could also configure a lot for the logging interceptor e.g. what should be logged, when should the log appear, ...

##How to use?? You only need to add this Interceptor to your spring contexts InterceptorRegistry. In Spring Boot you only need to override the addInterceptors in your service starter.

@SpringBootApplication
public class WebApplicationStarter extends WebMvcConfigurerAdapter {
...
     @Override
        public void addInterceptors(InterceptorRegistry registry) {
            registry.addInterceptor(new LoggingInterceptor());
        }
... 
}

For older Spring versions you also need to add this interceptor to your available interceptor registry/list but in a little bit different way. If you have some questions for it feel free to ask me.

##Configuration You could configure how your logs should look like. There are some uniform events which will be triggered by spring. For every event/method you could configure a log pattern({eventName}LogPattern) and a log level this message should be logged({eventName}LogLevel)

###Configurable Replacements All replacement strings are documented in this file - LogField.java

###pre handle This method will be called after HandlerMapping determined an appropriate handler object, but before HandlerAdapter invokes the handler

• preHandleLogPattern - Log pattern you want to have replaced and logged in PRE_HANDLE [Default: Method: %http_request_method% - RequestURI: %http_request_uri% - RequestURL: %http_request_url% - Runtime: %request_runtime%ms - RequestedSessionId: %http_request_session_id% - CreatedSessionId: %http_request_created_session_id%]

• preHandleLogLevel - specify the LogLevel the log should appear [Default: debug] ###post handle This method will be called after HandlerAdapter actually invoked the handler, but before the DispatcherServlet renders the view.

• postHandleLogPattern - Log pattern you want to have replaced and logged in POST_HANDLE [Default: Method: %http_request_method% - RequestURI: %http_request_uri% - HttpStatus: %http_response_status% - Runtime: %request_runtime%ms]

• postHandleLogLevel - specify the LogLevel the log should appear [Default: debug] ###after completion This method will be called after completion of request processing, that is, after rendering the view.

• afterCompletionLogPattern - Log pattern you want to have replaced and logged in AFTER_COMPLETION
  [Default: Method: %http_request_method% - RequestURI: %http_request_uri% - RequestParams: %http_request_params% - HttpStatus: %http_response_status% - Runtime: %request_runtime%ms]

• afterCompletionLogLevel - specify the LogLevel the log should appear [Default: info] ##Maven Current version is available at central repository

  ... io.winkelmann spring-extension-logging {CURRENT_VERSION} ...

For the current version take a look at the maven central page: https://mvnrepository.com/artifact/io.winkelmann/spring-extension-logging

###TODO

• add tests
• make logging level settable
• some performance tests