Hello. I'd say JMX would be a good way to handle changing settings at runtime. If the default JVM platform mbean server [1] isn't good enough, you can use jboss, weblogic, or something. However, the default one is pretty painless to use and jconsole [2] will detect if it is running.
Logging: If you are using java.util.logging, there is already a platform mbean to do this in the standard JVM [3]. If using another service, you can register your logmanager with guice-jmx [4]. Uris: For changing the urls, this is fairly straightforward. You can create a class that has an @Provides method [5] that serves your URI (don't make this @Singleton). You can then register that with guice-jmx [4]. If you use a Provider<URI> in your code to access the url, it calls that Provides method each request. In this case, it will pickup any changes you may have made via JMX. I hope this helps! -Adrian jclouds [1] http://java.sun.com/j2se/1.5.0/docs/guide/management/agent.html [2] http://java.sun.com/j2se/1.5.0/docs/guide/management/jconsole.html [3] http://java.sun.com/j2se/1.5.0/docs/guide/management/overview.html#loggingmxbean [4] http://google-guice.googlecode.com/svn/trunk/latest-javadoc/com/google/inject/tools/jmx/Manager.html [5] http://code.google.com/p/google-guice/wiki/ProvidesMethods On Fri, Jul 24, 2009 at 11:43 PM, tforcram<tforc...@gmail.com> wrote: > > How could I use guice to change configuration dynamically at runtime? > > As an example, we currently use spring to change varying config params > while the system is running. For instance if we have a dependency on > a server at address a.example.com (which was loaded initially through > a property file), and we need to change that address to b.example.com > (because there was a power outage or something) we update the > properties file and within 5 minutes we have a thread that refreshes > the spring context from disk (which reloads the address from the > properties file) and everything dynamically switches. > > Another example would be dynamically adjusting a logger setting to > output debug settings for a few minutes without having to restart the > server. > > I understand that this introduces a lot of risk in terms of screwing > something up, but is something like this even possible with guice? If > so, what would it look like or are there any examples? > > Thanks. > > > --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "google-guice" group. To post to this group, send email to google-guice@googlegroups.com To unsubscribe from this group, send email to google-guice+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/google-guice?hl=en -~----------~----~----~----~------~----~------~--~---
