Changed the disable zookeeper mechanism. There is now a class (StandaloneRegistry) that implements IControllerRegistryService without needing zookeeper - this is intended for single-node setups e.g. during development
diff --git a/src/main/java/net/onrc/onos/registry/controller/StandaloneRegistry.java b/src/main/java/net/onrc/onos/registry/controller/StandaloneRegistry.java
new file mode 100644
index 0000000..e3181fe
--- /dev/null
+++ b/src/main/java/net/onrc/onos/registry/controller/StandaloneRegistry.java
@@ -0,0 +1,162 @@
+package net.onrc.onos.registry.controller;
+
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+import net.floodlightcontroller.core.module.FloodlightModuleContext;
+import net.floodlightcontroller.core.module.FloodlightModuleException;
+import net.floodlightcontroller.core.module.IFloodlightModule;
+import net.floodlightcontroller.core.module.IFloodlightService;
+import net.floodlightcontroller.restserver.IRestApiService;
+
+import org.openflow.util.HexString;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+public class StandaloneRegistry implements IFloodlightModule,
+		IControllerRegistryService {
+	protected static Logger log = LoggerFactory.getLogger(StandaloneRegistry.class);
+	
+	protected IRestApiService restApi;
+	
+	//protected String controllerId;
+	
+	protected String controllerId = null;
+	protected Map<String, ControlChangeCallback> switchCallbacks;
+	
+
+	@Override
+	public void requestControl(long dpid, ControlChangeCallback cb)
+			throws RegistryException {
+		if (controllerId == null) {
+			throw new RuntimeException("Must register a controller before calling requestControl");
+		}
+		
+		switchCallbacks.put(HexString.toHexString(dpid), cb);
+		
+		log.debug("Control granted for {}", HexString.toHexString(dpid));
+		
+		//Immediately grant request for control
+		if (cb != null) {
+			cb.controlChanged(dpid, true);
+		}
+	}
+
+	@Override
+	public void releaseControl(long dpid) {
+		ControlChangeCallback cb = switchCallbacks.remove(HexString.toHexString(dpid));
+		
+		log.debug("Control released for {}", HexString.toHexString(dpid));
+		
+		if (cb != null){
+			cb.controlChanged(dpid, false);
+		}
+	}
+
+	@Override
+	public boolean hasControl(long dpid) {
+		return switchCallbacks.containsKey(HexString.toHexString(dpid));
+	}
+
+	@Override
+	public void setMastershipId(String id) {
+		// TODO Auto-generated method stub
+
+	}
+
+	@Override
+	public String getMastershipId() {
+		return controllerId;
+	}
+
+	@Override
+	public void registerController(String controllerId)
+			throws RegistryException {
+		this.controllerId = controllerId;
+	}
+
+	@Override
+	public Collection<String> getAllControllers() throws RegistryException {
+		List<String> l = new ArrayList<String>();
+		l.add(controllerId);
+		return l;
+	}
+
+	@Override
+	public String getControllerForSwitch(long dpid) throws RegistryException {
+		return controllerId;
+	}
+
+	@Override
+	public Map<String, List<ControllerRegistryEntry>> getAllSwitches() {
+		Map<String, List<ControllerRegistryEntry>> switches = 
+				new HashMap<String, List<ControllerRegistryEntry>>();
+		
+		for (String strSwitch : switchCallbacks.keySet()){
+			log.debug("Swtich _{}", strSwitch);
+			List<ControllerRegistryEntry> list = new ArrayList<ControllerRegistryEntry>();
+			list.add(new ControllerRegistryEntry(controllerId, 0));
+			
+			switches.put(strSwitch, list);
+		}
+		
+		return switches;
+	}
+
+	@Override
+	public Collection<Long> getSwitchesControlledByController(
+			String controllerId) {
+		throw new RuntimeException("Not yet implemented");
+	}
+
+	@Override
+	public Collection<Class<? extends IFloodlightService>> getModuleServices() {
+		Collection<Class<? extends IFloodlightService>> l = 
+				new ArrayList<Class<? extends IFloodlightService>>();
+		l.add(IControllerRegistryService.class);
+		return l;
+	}
+
+	@Override
+	public Map<Class<? extends IFloodlightService>, IFloodlightService> getServiceImpls() {
+		Map<Class<? extends IFloodlightService>, IFloodlightService> m = 
+				new HashMap<Class<? extends IFloodlightService>, IFloodlightService>();
+		m.put(IControllerRegistryService.class,  this);
+		return m;
+	}
+
+	@Override
+	public Collection<Class<? extends IFloodlightService>> getModuleDependencies() {
+		Collection<Class<? extends IFloodlightService>> l =
+                new ArrayList<Class<? extends IFloodlightService>>();
+        l.add(IRestApiService.class);
+		return l;
+	}
+
+	@Override
+	public void init(FloodlightModuleContext context)
+			throws FloodlightModuleException {
+		restApi = context.getServiceImpl(IRestApiService.class);
+		
+		switchCallbacks = new HashMap<String, ControlChangeCallback>();
+		
+		//Put some data in for testing
+		/*
+		try {
+			registerController("hurro");
+			requestControl(2L, null);
+		} catch (RegistryException e1) {
+			// TODO Auto-generated catch block
+			e1.printStackTrace();
+		}*/
+	}
+
+	@Override
+	public void startUp(FloodlightModuleContext context) {
+		restApi.addRestletRoutable(new RegistryWebRoutable());
+	}
+
+}