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package org.mule.registry; |
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import org.mule.api.MuleContext; |
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import org.mule.api.MuleException; |
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import org.mule.api.agent.Agent; |
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import org.mule.api.endpoint.ImmutableEndpoint; |
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import org.mule.api.lifecycle.Disposable; |
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import org.mule.api.lifecycle.InitialisationException; |
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import org.mule.api.model.Model; |
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import org.mule.api.registry.InjectProcessor; |
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import org.mule.api.registry.MuleRegistry; |
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import org.mule.api.registry.ObjectProcessor; |
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import org.mule.api.registry.PreInitProcessor; |
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import org.mule.api.registry.RegistrationException; |
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import org.mule.api.service.Service; |
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import org.mule.api.transformer.Transformer; |
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import org.mule.api.transport.Connector; |
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import org.mule.config.i18n.MessageFactory; |
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import org.mule.lifecycle.phases.NotInLifecyclePhase; |
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import org.mule.util.CollectionUtils; |
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import org.mule.util.StringUtils; |
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import java.util.Collection; |
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import java.util.HashMap; |
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import java.util.Map; |
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import java.util.Map.Entry; |
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import java.util.Set; |
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import java.util.concurrent.locks.Lock; |
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import java.util.concurrent.locks.ReadWriteLock; |
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import java.util.concurrent.locks.ReentrantReadWriteLock; |
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import org.apache.commons.collections.Predicate; |
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import org.apache.commons.collections.functors.InstanceofPredicate; |
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import org.apache.commons.logging.Log; |
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public class TransientRegistry extends AbstractRegistry |
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{ |
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public static final String REGISTRY_ID = "org.mule.Registry.Transient"; |
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|
50 | 0 | private final RegistryMap registryMap = new RegistryMap(logger); |
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public TransientRegistry(MuleContext muleContext) |
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{ |
54 | 0 | this(REGISTRY_ID, muleContext); |
55 | 0 | } |
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public TransientRegistry(String id, MuleContext muleContext) |
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{ |
59 | 0 | super(id, muleContext); |
60 | 0 | putDefaultEntriesIntoRegistry(); |
61 | 0 | } |
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|
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private void putDefaultEntriesIntoRegistry() |
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{ |
65 | 0 | Map<String, Object> processors = new HashMap<String, Object>(); |
66 | 0 | processors.put("_muleContextProcessor", new MuleContextProcessor(muleContext)); |
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|
68 | 0 | processors.put("_muleExpressionEvaluatorProcessor", new ExpressionEvaluatorProcessor(muleContext)); |
69 | 0 | processors.put("_muleExpressionEnricherProcessor", new ExpressionEnricherProcessor(muleContext)); |
70 | 0 | processors.put("_muleLifecycleStateInjectorProcessor", new LifecycleStateInjectorProcessor(getLifecycleManager().getState())); |
71 | 0 | processors.put("_muleLifecycleManager", getLifecycleManager()); |
72 | 0 | registryMap.putAll(processors); |
73 | 0 | } |
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|
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@Override |
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protected void doInitialise() throws InitialisationException |
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{ |
78 | 0 | applyProcessors(lookupObjects(Connector.class), null); |
79 | 0 | applyProcessors(lookupObjects(Transformer.class), null); |
80 | 0 | applyProcessors(lookupObjects(ImmutableEndpoint.class), null); |
81 | 0 | applyProcessors(lookupObjects(Agent.class), null); |
82 | 0 | applyProcessors(lookupObjects(Model.class), null); |
83 | 0 | applyProcessors(lookupObjects(Service.class), null); |
84 | 0 | applyProcessors(lookupObjects(Object.class), null); |
85 | 0 | } |
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@Override |
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protected void doDispose() |
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{ |
90 | 0 | registryMap.clear(); |
91 | 0 | } |
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|
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protected Map<String, Object> applyProcessors(Map<String, Object> objects) |
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{ |
95 | 0 | if (objects == null) |
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{ |
97 | 0 | return null; |
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} |
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|
100 | 0 | Map<String, Object> results = new HashMap<String, Object>(); |
101 | 0 | for (Map.Entry<String, Object> entry : objects.entrySet()) |
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{ |
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|
104 | 0 | Collection<ObjectProcessor> processors = lookupObjects(ObjectProcessor.class); |
105 | 0 | for (ObjectProcessor processor : processors) |
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{ |
107 | 0 | Object result = processor.process(entry.getValue()); |
108 | 0 | if (result != null) |
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{ |
110 | 0 | results.put(entry.getKey(), result); |
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} |
112 | 0 | } |
113 | 0 | } |
114 | 0 | return results; |
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} |
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public void registerObjects(Map<String, Object> objects) throws RegistrationException |
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{ |
120 | 0 | if (objects == null) |
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{ |
122 | 0 | return; |
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} |
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|
125 | 0 | for (Map.Entry<String, Object> entry : objects.entrySet()) |
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{ |
127 | 0 | registerObject(entry.getKey(), entry.getValue()); |
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} |
129 | 0 | } |
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|
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@SuppressWarnings("unchecked") |
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public <T> Map<String, T> lookupByType(Class<T> type) |
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{ |
134 | 0 | final Map<String, T> results = new HashMap<String, T>(); |
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try |
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{ |
137 | 0 | registryMap.lockForReading(); |
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|
139 | 0 | for (Map.Entry<String, Object> entry : registryMap.entrySet()) |
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{ |
141 | 0 | final Class<?> clazz = entry.getValue().getClass(); |
142 | 0 | if (type.isAssignableFrom(clazz)) |
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{ |
144 | 0 | results.put(entry.getKey(), (T) entry.getValue()); |
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} |
146 | 0 | } |
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} |
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finally |
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{ |
150 | 0 | registryMap.unlockForReading(); |
151 | 0 | } |
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|
153 | 0 | return results; |
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} |
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|
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public <T> T lookupObject(String key) |
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{ |
158 | 0 | return registryMap.<T>get(key); |
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} |
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@SuppressWarnings("unchecked") |
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public <T> Collection<T> lookupObjects(Class<T> returntype) |
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{ |
164 | 0 | return (Collection<T>) registryMap.select(new InstanceofPredicate(returntype)); |
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} |
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Object applyLifecycle(Object object) throws MuleException |
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{ |
178 | 0 | getLifecycleManager().applyCompletedPhases(object); |
179 | 0 | return object; |
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} |
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Object applyLifecycle(Object object, String phase) throws MuleException |
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{ |
184 | 0 | getLifecycleManager().applyPhase(object, NotInLifecyclePhase.PHASE_NAME, phase); |
185 | 0 | return object; |
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} |
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Object applyProcessors(Object object, Object metadata) |
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{ |
190 | 0 | Object theObject = object; |
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|
192 | 0 | if(!hasFlag(metadata, MuleRegistry.INJECT_PROCESSORS_BYPASS_FLAG)) |
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{ |
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|
195 | 0 | Collection<InjectProcessor> injectProcessors = lookupObjects(InjectProcessor.class); |
196 | 0 | for (InjectProcessor processor : injectProcessors) |
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{ |
198 | 0 | theObject = processor.process(theObject); |
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} |
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} |
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|
202 | 0 | if(!hasFlag(metadata, MuleRegistry.PRE_INIT_PROCESSORS_BYPASS_FLAG)) |
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{ |
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|
205 | 0 | Collection<PreInitProcessor> processors = lookupObjects(PreInitProcessor.class); |
206 | 0 | for (PreInitProcessor processor : processors) |
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{ |
208 | 0 | theObject = processor.process(theObject); |
209 | 0 | if(theObject==null) |
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{ |
211 | 0 | return null; |
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} |
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} |
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} |
215 | 0 | return theObject; |
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} |
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public void registerObject(String key, Object value) throws RegistrationException |
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{ |
226 | 0 | registerObject(key, value, Object.class); |
227 | 0 | } |
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public void registerObject(String key, Object object, Object metadata) throws RegistrationException |
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{ |
234 | 0 | checkDisposed(); |
235 | 0 | if (StringUtils.isBlank(key)) |
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{ |
237 | 0 | throw new RegistrationException(MessageFactory.createStaticMessage("Attempt to register object with no key")); |
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} |
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|
240 | 0 | if (logger.isDebugEnabled()) |
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{ |
242 | 0 | logger.debug(String.format("registering key/object %s/%s", key, object)); |
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} |
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|
245 | 0 | logger.debug("applying processors"); |
246 | 0 | object = applyProcessors(object, metadata); |
247 | 0 | if (object == null) |
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{ |
249 | 0 | return; |
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} |
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|
252 | 0 | registryMap.putAndLogWarningIfDuplicate(key, object); |
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|
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try |
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{ |
256 | 0 | if (!hasFlag(metadata, MuleRegistry.LIFECYCLE_BYPASS_FLAG)) |
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{ |
258 | 0 | if(logger.isDebugEnabled()) |
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{ |
260 | 0 | logger.debug("applying lifecycle to object: " + object); |
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} |
262 | 0 | getLifecycleManager().applyCompletedPhases(object); |
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} |
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} |
265 | 0 | catch (MuleException e) |
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{ |
267 | 0 | throw new RegistrationException(e); |
268 | 0 | } |
269 | 0 | } |
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|
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protected void checkDisposed() throws RegistrationException |
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{ |
273 | 0 | if(getLifecycleManager().isPhaseComplete(Disposable.PHASE_NAME)) |
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{ |
275 | 0 | throw new RegistrationException(MessageFactory.createStaticMessage("Cannot register objects on the registry as the context is disposed")); |
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} |
277 | 0 | } |
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protected boolean hasFlag(Object metaData, int flag) |
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{ |
281 | 0 | return !(metaData == null || !(metaData instanceof Integer)) && ((Integer) metaData & flag) != 0; |
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} |
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public void unregisterObject(String key, Object metadata) throws RegistrationException |
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{ |
295 | 0 | Object obj = registryMap.remove(key); |
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|
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try |
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{ |
299 | 0 | if (!hasFlag(metadata, MuleRegistry.LIFECYCLE_BYPASS_FLAG)) |
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{ |
301 | 0 | getLifecycleManager().applyPhase(obj, lifecycleManager.getCurrentPhase(), Disposable.PHASE_NAME); |
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} |
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} |
304 | 0 | catch (MuleException e) |
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{ |
306 | 0 | throw new RegistrationException(e); |
307 | 0 | } |
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|
309 | 0 | } |
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public void unregisterObject(String key) throws RegistrationException |
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{ |
313 | 0 | unregisterObject(key, Object.class); |
314 | 0 | } |
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public boolean isReadOnly() |
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{ |
322 | 0 | return false; |
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} |
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public boolean isRemote() |
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{ |
327 | 0 | return false; |
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} |
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private static class RegistryMap |
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{ |
337 | 0 | private final Map<String, Object> registry = new HashMap<String, Object>(); |
338 | 0 | private final ReadWriteLock registryLock = new ReentrantReadWriteLock(); |
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private Log logger; |
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public RegistryMap(Log log) |
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{ |
344 | 0 | super(); |
345 | 0 | logger = log; |
346 | 0 | } |
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|
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public Collection<?> select(Predicate predicate) |
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{ |
350 | 0 | Lock readLock = registryLock.readLock(); |
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try |
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{ |
353 | 0 | readLock.lock(); |
354 | 0 | return CollectionUtils.select(registry.values(), predicate); |
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} |
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finally |
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{ |
358 | 0 | readLock.unlock(); |
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} |
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} |
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|
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public void clear() |
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{ |
364 | 0 | Lock writeLock = registryLock.writeLock(); |
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try |
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{ |
367 | 0 | writeLock.lock(); |
368 | 0 | registry.clear(); |
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} |
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finally |
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{ |
372 | 0 | writeLock.unlock(); |
373 | 0 | } |
374 | 0 | } |
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|
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public void putAndLogWarningIfDuplicate(String key, Object object) |
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{ |
378 | 0 | Lock writeLock = registryLock.writeLock(); |
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try |
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{ |
381 | 0 | writeLock.lock(); |
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|
383 | 0 | if (registry.containsKey(key)) |
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{ |
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|
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|
388 | 0 | logger.warn("TransientRegistry already contains an object named '" + key + "'. The previous object will be overwritten."); |
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} |
390 | 0 | registry.put(key, object); |
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} |
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finally |
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{ |
394 | 0 | writeLock.unlock(); |
395 | 0 | } |
396 | 0 | } |
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|
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public void putAll(Map<String, Object> map) |
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{ |
400 | 0 | Lock writeLock = registryLock.writeLock(); |
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try |
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{ |
403 | 0 | writeLock.lock(); |
404 | 0 | registry.putAll(map); |
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} |
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finally |
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{ |
408 | 0 | writeLock.unlock(); |
409 | 0 | } |
410 | 0 | } |
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|
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@SuppressWarnings("unchecked") |
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public <T> T get(String key) |
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{ |
415 | 0 | Lock readLock = registryLock.readLock(); |
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try |
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{ |
418 | 0 | readLock.lock(); |
419 | 0 | return (T) registry.get(key); |
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} |
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finally |
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{ |
423 | 0 | readLock.unlock(); |
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} |
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} |
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|
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public Object remove(String key) |
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{ |
429 | 0 | Lock writeLock = registryLock.writeLock(); |
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try |
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{ |
432 | 0 | writeLock.lock(); |
433 | 0 | return registry.remove(key); |
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} |
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finally |
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{ |
437 | 0 | writeLock.unlock(); |
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} |
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} |
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|
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public Set<Entry<String, Object>> entrySet() |
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{ |
443 | 0 | return registry.entrySet(); |
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} |
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|
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public void lockForReading() |
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{ |
448 | 0 | registryLock.readLock().lock(); |
449 | 0 | } |
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|
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public void unlockForReading() |
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{ |
453 | 0 | registryLock.readLock().unlock(); |
454 | 0 | } |
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} |
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} |