Umesh Krishnaswamy | 345ee99 | 2012-12-13 20:29:48 -0800 | [diff] [blame] | 1 | package net.floodlightcontroller.core.module; |
| 2 | |
| 3 | import java.util.Collection; |
| 4 | import java.util.HashMap; |
| 5 | import java.util.Map; |
| 6 | |
| 7 | /** |
| 8 | * The service registry for an IFloodlightProvider. |
| 9 | * @author alexreimers |
| 10 | */ |
| 11 | public class FloodlightModuleContext implements IFloodlightModuleContext { |
| 12 | protected Map<Class<? extends IFloodlightService>, IFloodlightService> serviceMap; |
| 13 | protected Map<Class<? extends IFloodlightModule>, Map<String, String>> configParams; |
| 14 | protected Collection<IFloodlightModule> moduleSet; |
| 15 | |
| 16 | /** |
| 17 | * Creates the ModuleContext for use with this IFloodlightProvider. |
| 18 | * This will be used as a module registry for all IFloodlightModule(s). |
| 19 | */ |
| 20 | public FloodlightModuleContext() { |
| 21 | serviceMap = |
| 22 | new HashMap<Class<? extends IFloodlightService>, |
| 23 | IFloodlightService>(); |
| 24 | configParams = |
| 25 | new HashMap<Class<? extends IFloodlightModule>, |
| 26 | Map<String, String>>(); |
| 27 | } |
| 28 | |
| 29 | /** |
| 30 | * Adds a IFloodlightModule for this Context. |
| 31 | * @param clazz the service class |
| 32 | * @param service The IFloodlightService to add to the registry |
| 33 | */ |
| 34 | public void addService(Class<? extends IFloodlightService> clazz, |
| 35 | IFloodlightService service) { |
| 36 | serviceMap.put(clazz, service); |
| 37 | } |
| 38 | |
| 39 | @SuppressWarnings("unchecked") |
| 40 | @Override |
| 41 | public <T extends IFloodlightService> T getServiceImpl(Class<T> service) { |
| 42 | IFloodlightService s = serviceMap.get(service); |
| 43 | return (T)s; |
| 44 | } |
| 45 | |
| 46 | @Override |
| 47 | public Collection<Class<? extends IFloodlightService>> getAllServices() { |
| 48 | return serviceMap.keySet(); |
| 49 | } |
| 50 | |
| 51 | @Override |
| 52 | public Collection<IFloodlightModule> getAllModules() { |
| 53 | return moduleSet; |
| 54 | } |
| 55 | |
| 56 | public void setModuleSet(Collection<IFloodlightModule> modSet) { |
| 57 | this.moduleSet = modSet; |
| 58 | } |
| 59 | |
| 60 | /** |
| 61 | * Gets the configuration parameter map for a module |
| 62 | * @param module The module to get the configuration map for, usually yourself |
| 63 | * @return A map containing all the configuration parameters for the module, may be empty |
| 64 | */ |
| 65 | @Override |
| 66 | public Map<String, String> getConfigParams(IFloodlightModule module) { |
| 67 | Map<String, String> retMap = configParams.get(module.getClass()); |
| 68 | if (retMap == null) { |
| 69 | // Return an empty map if none exists so the module does not |
| 70 | // need to null check the map |
| 71 | retMap = new HashMap<String, String>(); |
| 72 | configParams.put(module.getClass(), retMap); |
| 73 | } |
| 74 | |
| 75 | // also add any configuration parameters for superclasses, but |
| 76 | // only if more specific configuration does not override it |
| 77 | for (Class<? extends IFloodlightModule> c : configParams.keySet()) { |
| 78 | if (c.isInstance(module)) { |
| 79 | for (Map.Entry<String, String> ent : configParams.get(c).entrySet()) { |
| 80 | if (!retMap.containsKey(ent.getKey())) { |
| 81 | retMap.put(ent.getKey(), ent.getValue()); |
| 82 | } |
| 83 | } |
| 84 | } |
| 85 | } |
| 86 | |
| 87 | return retMap; |
| 88 | } |
| 89 | |
| 90 | /** |
| 91 | * Adds a configuration parameter for a module |
| 92 | * @param mod The fully qualified module name to add the parameter to |
| 93 | * @param key The configuration parameter key |
| 94 | * @param value The configuration parameter value |
| 95 | */ |
| 96 | public void addConfigParam(IFloodlightModule mod, String key, String value) { |
| 97 | Map<String, String> moduleParams = configParams.get(mod.getClass()); |
| 98 | if (moduleParams == null) { |
| 99 | moduleParams = new HashMap<String, String>(); |
| 100 | configParams.put(mod.getClass(), moduleParams); |
| 101 | } |
| 102 | moduleParams.put(key, value); |
| 103 | } |
| 104 | } |