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Use logger, fix JavaDoc.

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This commit is contained in:
Michael Jumper
2012-03-07 20:29:41 -08:00
parent 7dbbf9fa55
commit b2704ffcad
1 changed files with 27 additions and 14 deletions
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41
guacamole/src/main/java/net/sourceforge/guacamole/net/basic/WebSocketSupportLoader.java
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@@ -25,15 +25,24 @@ import javax.servlet.ServletContext;
import javax.servlet.ServletContextEvent; import javax.servlet.ServletContextEvent;
import javax.servlet.ServletContextListener; import javax.servlet.ServletContextListener;
import net.sourceforge.guacamole.GuacamoleException; import net.sourceforge.guacamole.GuacamoleException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/** /**
* Simple HttpServlet which outputs XML containing a list of all authorized * Simple ServletContextListener which loads a WebSocket tunnel implementation
* configurations for the current user. * if available, using the Servlet 3.0 API to dynamically load and install
* the tunnel servlet.
*
* Note that because Guacamole depends on the Servlet 2.5 API, and 3.0 may
* not be available or needed if WebSocket is not desired, the 3.0 API is
* detected and invoked dynamically via reflection.
* *
* @author Michael Jumper * @author Michael Jumper
*/ */
public class WebSocketSupportLoader implements ServletContextListener { public class WebSocketSupportLoader implements ServletContextListener {
private Logger logger = LoggerFactory.getLogger(WebSocketSupportLoader.class);
@Override @Override
public void contextDestroyed(ServletContextEvent sce) { public void contextDestroyed(ServletContextEvent sce) {
} }
@@ -45,8 +54,7 @@ public class WebSocketSupportLoader implements ServletContextListener {
// Attempt to find WebSocket servlet // Attempt to find WebSocket servlet
Class<Servlet> servlet = (Class<Servlet>) GuacamoleClassLoader.getInstance().findClass( Class<Servlet> servlet = (Class<Servlet>) GuacamoleClassLoader.getInstance().findClass(
"net.sourceforge.guacamole.net.basic.BasicGuacamoleTunnelServlet" "net.sourceforge.guacamole.net.basic.BasicGuacamoleWebSocketTunnelServlet"
//"net.sourceforge.guacamole.net.basic.BasicGuacamoleWebSocketTunnelServlet"
); );
// Dynamically add servlet IF SERVLET 3.0 API AVAILABLE! // Dynamically add servlet IF SERVLET 3.0 API AVAILABLE!
@@ -65,31 +73,36 @@ public class WebSocketSupportLoader implements ServletContextListener {
// If we succesfully load and register the WebSocket tunnel servlet, // If we succesfully load and register the WebSocket tunnel servlet,
// WebSocket is supported. // WebSocket is supported.
System.err.println("WebSocket support found!"); logger.info("WebSocket support found and loaded.");
} }
// Servlet API 3.0 unsupported
catch (ClassNotFoundException e) { catch (ClassNotFoundException e) {
// Servlet API 3.0 unsupported logger.error("Servlet API 3.0 not found.", e);
System.err.println("Servlet API 3.0 not found.");
} }
catch (NoSuchMethodException e) { catch (NoSuchMethodException e) {
// Servlet API 3.0 unsupported logger.error("Servlet API 3.0 found, but incomplete.", e);
System.err.println("Servlet API 3.0 not found.");
} }
// Servlet API 3.0 found, but errors during use
catch (IllegalAccessException e) { catch (IllegalAccessException e) {
logger.error("Unable to load WebSocket tunnel servlet.", e);
} }
catch (InvocationTargetException e) { catch (InvocationTargetException e) {
logger.error("Internal error loading WebSocket tunnel servlet.", e);
} }
} }
catch (ClassNotFoundException e) {
// If no such servlet class, WebSocket support not present
System.err.println("WebSocket support not found.");
// If no such servlet class, WebSocket support not present
catch (ClassNotFoundException e) {
logger.info("WebSocket support not found.");
} }
// Log all GuacamoleExceptions
catch (GuacamoleException e) { catch (GuacamoleException e) {
e.printStackTrace(); logger.error("Unable to load/detect WebSocket support.", e);
} }
} }