Add prototype of global action support

src/main/scala/servlet/AutoUpdateListener.scala

@@ -13,6 +13,8 @@ import org.eclipse.jgit.api.Git
 import util.Directory
 import plugin._
 
+import scala.slick.jdbc.meta.MBestRowIdentifierColumn.Scope.Session
+
 object AutoUpdate {
   
   /**
@@ -103,8 +105,10 @@ object AutoUpdate {
             conn.update("UPDATE ACTIVITY SET ADDITIONAL_INFO = ? WHERE ACTIVITY_ID = ?", newInfo, rs.getInt("ACTIVITY_ID"))
           }
         }
-        FileUtils.deleteDirectory(Directory.getPluginCacheDir())
-        FileUtils.deleteDirectory(new File(Directory.PluginHome))
+        ignore {
+          FileUtils.deleteDirectory(Directory.getPluginCacheDir())
+          //FileUtils.deleteDirectory(new File(Directory.PluginHome))
+        }
       }
     },
     new Version(2, 2),
@@ -235,10 +239,12 @@ class AutoUpdateListener extends ServletContextListener {
         }
       }
       logger.debug("End schema update")
+
+      // Load plugins
+
+      PluginRegistry.initialize(conn)
     }
 
-    // Load plugins
-    PluginRegistry.initialize()
   }
 
   def contextDestroyed(sce: ServletContextEvent): Unit = {

src/main/scala/servlet/PluginActionFilter.scala

@@ -0,0 +1,38 @@
+package servlet
+
+import javax.servlet._
+import javax.servlet.http.{HttpServletResponse, HttpServletRequest}
+
+import play.twirl.api.Html
+import plugin.PluginRegistry
+
+class PluginActionFilter extends Filter {
+
+  def init(config: FilterConfig) = {}
+
+  def destroy(): Unit = {}
+
+  def doFilter(req: ServletRequest, res: ServletResponse, chain: FilterChain): Unit = (req, res) match {
+    case (req: HttpServletRequest, res: HttpServletResponse) => {
+      val method = req.getMethod.toLowerCase
+      val path = req.getRequestURI.substring(req.getContextPath.length)
+      val registry = PluginRegistry()
+      registry.getGlobalAction(method, path).map { action =>
+        action(req, res) match {
+          // TODO to be type classes?
+          case x: String =>
+            res.setContentType("text/plain; charset=UTF-8")
+            res.getWriter.write(x)
+            res.getWriter.flush()
+          case x: Html =>
+            res.setContentType("text/html; charset=UTF-8")
+            res.getWriter.write(x.body)
+            res.getWriter.flush()
+        }
+      }.getOrElse {
+        chain.doFilter(req, res)
+      }
+    }
+  }
+
+}