1 files changed, 258 insertions, 0 deletions
diff --git a/bkucommon/src/main/java/at/gv/egiz/bku/binding/BindingProcessorManagerImpl.java b/bkucommon/src/main/java/at/gv/egiz/bku/binding/BindingProcessorManagerImpl.java
new file mode 100644
index 00000000..7a3b1bb9
--- /dev/null
+++ b/bkucommon/src/main/java/at/gv/egiz/bku/binding/BindingProcessorManagerImpl.java
@@ -0,0 +1,258 @@
+/*
+* Copyright 2008 Federal Chancellery Austria and
+* Graz University of Technology
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+package at.gv.egiz.bku.binding;
+
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.Iterator;
+import java.util.Locale;
+import java.util.Map;
+import java.util.Set;
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Executors;
+import java.util.concurrent.Future;
+
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
+
+import at.gv.egiz.bku.slcommands.SLCommandInvoker;
+import at.gv.egiz.bku.slexceptions.SLRuntimeException;
+import at.gv.egiz.bku.utils.binding.Protocol;
+import at.gv.egiz.stal.STAL;
+import at.gv.egiz.stal.STALFactory;
+
+/**
+ * This class maintains all active BindingProcessor Objects. Currently, only
+ * HTTPBinding is supported.
+ */
+public class BindingProcessorManagerImpl implements BindingProcessorManager {
+
+  public final static Protocol[] SUPPORTED_PROTOCOLS = { Protocol.HTTP,
+      Protocol.HTTPS };
+
+  private static Log log = LogFactory.getLog(BindingProcessorManagerImpl.class);
+
+  private RemovalStrategy removalStrategy;
+  private STALFactory stalFactory;
+  private SLCommandInvoker commandInvokerClass;
+  private ExecutorService executorService;
+  private Map<Id, MapEntityWrapper> bindingProcessorMap = Collections
+      .synchronizedMap(new HashMap<Id, MapEntityWrapper>());
+
+  /**
+   * Container to hold a Future and Bindingprocessor object as map value.
+   * @author wbauer
+   * @see BindingProcessorManagerImpl#bindingProcessorMap
+   */
+  static class MapEntityWrapper {
+    private Future<?> future;
+    private BindingProcessor bindingProcessor;
+
+    public MapEntityWrapper(Future<?> future, BindingProcessor bindingProcessor) {
+      if ((bindingProcessor == null) || (future == null)) {
+        throw new NullPointerException("Argument must not be null");
+      }
+      this.bindingProcessor = bindingProcessor;
+      this.future = future;
+    }
+
+    public Future<?> getFuture() {
+      return future;
+    }
+
+    public BindingProcessor getBindingProcessor() {
+      return bindingProcessor;
+    }
+
+    public int hashCode() {
+      return bindingProcessor.getId().hashCode();
+    }
+
+    public boolean equals(Object other) {
+      if (other instanceof MapEntityWrapper) {
+        MapEntityWrapper o = (MapEntityWrapper) other;
+        return (o.bindingProcessor.getId().equals(bindingProcessor.getId()));
+      } else {
+        return false;
+      }
+    }
+  }
+
+  /**
+   * 
+   * @param fab
+   *          must not be null
+   * @param ci
+   *          must not be null (prototype to generate new instances)
+   */
+  public BindingProcessorManagerImpl(STALFactory fab, SLCommandInvoker ci) {
+    if (fab == null) {
+      throw new NullPointerException("STALFactory must not be null");
+    }
+    stalFactory = fab;
+    if (ci == null) {
+      throw new NullPointerException("SLCommandInvoker must not be null");
+    }
+    commandInvokerClass = ci;
+    executorService = Executors.newCachedThreadPool();
+  }
+
+  /**
+   * 
+   * @return the STALFactory currently used. 
+   */
+  public STALFactory getStalFactory() {
+    return stalFactory;
+  }
+
+  /**
+   * Sets the STALFactory to be used.
+   * @param stalFactory
+   */
+  public void setStalFactory(STALFactory stalFactory) {
+    this.stalFactory = stalFactory;
+  }
+
+  /**
+   * Could be used to setup a new executor service during application stratup.
+   * @param executorService
+   */
+  public void setExecutorService(ExecutorService executorService) {
+    this.executorService = executorService;
+  }
+
+  public void setRemovalStrategy(RemovalStrategy aStrategy) {
+    removalStrategy = aStrategy;
+  }
+
+  public RemovalStrategy getRemovlaStrategy() {
+    return removalStrategy;
+  }
+
+  public void shutdown() {
+    log.info("Shutting down the BindingProcessorManager");
+    executorService.shutdown();
+  }
+
+  /**
+   * Uses the default locale
+   */
+  public BindingProcessor createBindingProcessor(String protocol,
+      String aSessionId) {
+    return createBindingProcessor(protocol, aSessionId, null);
+  }
+  
+  /**
+   * FactoryMethod creating a new BindingProcessor object.
+   * 
+   * @param protocol
+   *          must not be null
+   */
+  public BindingProcessor createBindingProcessor(String protocol,
+      String aSessionId, Locale locale) {
+    String low = protocol.toLowerCase();
+    Protocol proto = null;
+    for (int i = 0; i < SUPPORTED_PROTOCOLS.length; i++) {
+      if (SUPPORTED_PROTOCOLS[i].toString().equals(low)) {
+        proto = SUPPORTED_PROTOCOLS[i];
+        break;
+      }
+    }
+    if (proto == null) {
+      throw new UnsupportedOperationException();
+    }
+    BindingProcessor bindingProcessor = new HTTPBindingProcessor(aSessionId,
+        commandInvokerClass.newInstance(), proto);
+    STAL stal = stalFactory.createSTAL();
+    bindingProcessor.init(stal, commandInvokerClass.newInstance());
+    if (locale != null) {
+      bindingProcessor.setLocale(locale);
+      stal.setLocale(locale);
+    }
+    return bindingProcessor;
+  }
+
+  /**
+   * @return the bindingprocessor object for this id or null if no bindingprocessor was found.
+   */
+  public BindingProcessor getBindingProcessor(Id aId) {
+    if (bindingProcessorMap.get(aId) != null) {
+      return bindingProcessorMap.get(aId).getBindingProcessor();
+    } else {
+      return null;
+    }
+  }
+
+  /**
+   * 
+   */
+  public void setSTALFactory(STALFactory aStalFactory) {
+    if (aStalFactory == null) {
+      throw new NullPointerException("Cannot set STALFactory to null");
+    }
+    stalFactory = aStalFactory;
+  }
+
+  /**
+   * Causes the BindingProcessorManager to manage the provided BindingProcessor
+   * @param aBindingProcessor must not be null
+   */
+  public void process(BindingProcessor aBindingProcessor) {
+    if (bindingProcessorMap.containsKey(aBindingProcessor.getId())) {
+      log.fatal("Clashing ids, cannot process bindingprocessor with id:"
+          + aBindingProcessor.getId());
+      throw new SLRuntimeException(
+          "Clashing ids, cannot process bindingprocessor with id:"
+              + aBindingProcessor.getId());
+    }
+    Future<?> f = executorService.submit(aBindingProcessor);
+    bindingProcessorMap.put(aBindingProcessor.getId(), new MapEntityWrapper(f,
+        aBindingProcessor));
+  }
+
+  @Override
+  public void setSLCommandInvoker(SLCommandInvoker invoker) {
+    commandInvokerClass = invoker;
+  }
+
+  @Override
+  public void removeBindingProcessor(Id sessionId) {
+    MapEntityWrapper wrapper = bindingProcessorMap
+        .get(sessionId);
+    if (wrapper == null) {
+      return;
+    }
+    Future<?> f = wrapper.getFuture();
+    if (!f.isDone()) {
+      f.cancel(true);
+    }
+    bindingProcessorMap.remove(sessionId);
+  }
+
+  @Override
+  public Set<Id> getManagedIds() {
+    Set<Id> result = new HashSet<Id>();
+    synchronized (bindingProcessorMap) {
+      for (Iterator<Id> it = bindingProcessorMap.keySet().iterator(); it
+          .hasNext();) {
+        result.add(it.next());
+      }
+    }
+    return result;
+  }
+}
+\ No newline at end of file