--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/org/dancres/blitz/lease/LeaseHandlers.java	Sat Mar 21 11:00:06 2009 +0000
@@ -0,0 +1,92 @@
+package org.dancres.blitz.lease;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+
+import java.util.logging.*;
+
+import net.jini.core.lease.UnknownLeaseException;
+import net.jini.core.lease.LeaseDeniedException;
+import net.jini.core.lease.Lease;
+
+import net.jini.config.ConfigurationException;
+import net.jini.config.ConfigurationFile;
+import net.jini.config.Configuration;
+
+import org.dancres.blitz.Logging;
+
+import org.dancres.blitz.config.ConfigurationFactory;
+
+import org.dancres.blitz.util.Time;
+
+/**
+   The access point for managing leases associated with SpaceUIDs.  Lease
+   management is achieved through a collection of LeaseHandlers loaded from
+   <code>handlers.properties</code>.  Each LeaseHandler "knows" about one
+   (or possibly more) types of SpaceUID and handles renewal or cancelling of
+   the lease associated with the SpaceUID.
+
+   @see org.dancres.blitz.lease.LeaseHandler
+ */
+public class LeaseHandlers {
+    private static final String MODULE_NAME =
+        ConfigurationFactory.BLITZ_MODULE;
+
+    private static final String HANDLER_PROPERTY = "handlers";
+
+    private static LeaseHandler[] theHandlers;
+
+    private static Logger theLogger =
+        Logging.newLogger("org.dancres.blitz.lease.LeaseHandlers");
+
+    static {
+        try {
+            InputStream myStream = 
+                LeaseHandlers.class.getResourceAsStream("handlers.properties");
+
+            if (myStream == null)
+                throw new IOException();
+            else {
+                Configuration myConfig =
+                    new ConfigurationFile(new InputStreamReader(myStream),
+                                          null);
+
+                LeaseHandler[] myFilters =
+                    (LeaseHandler[]) myConfig.getEntry(MODULE_NAME,
+                                                       HANDLER_PROPERTY,
+                                                       LeaseHandler[].class);
+
+                theHandlers = myFilters;
+            }
+
+        } catch (Exception anE) {
+            theLogger.log(Level.SEVERE, "Failed to load lease handlers", anE);
+        }
+    }
+
+    public static long renew(SpaceUID aUID, long aLeaseDuration)
+        throws UnknownLeaseException, LeaseDeniedException, IOException {
+
+        for (int i = 0; i < theHandlers.length; i++) {
+            if (theHandlers[i].recognizes(aUID)) {
+                return theHandlers[i].renew(aUID, aLeaseDuration);
+            }
+        }
+
+        throw new UnknownLeaseException();
+    }
+
+    public static void cancel(SpaceUID aUID)
+        throws UnknownLeaseException, IOException {
+
+        for (int i = 0; i < theHandlers.length; i++) {
+            if (theHandlers[i].recognizes(aUID)) {
+                theHandlers[i].cancel(aUID);
+                return;
+            }
+        }
+
+        throw new UnknownLeaseException();
+    }
+}