New project conventions

[lgpl/argeo-commons.git] / org.argeo.security.core / src / org / argeo / security / core / KeyBasedSystemExecutionService.java

diff --git a/org.argeo.security.core/src/org/argeo/security/core/KeyBasedSystemExecutionService.java b/org.argeo.security.core/src/org/argeo/security/core/KeyBasedSystemExecutionService.java
new file mode 100644 (file)
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+++ b/org.argeo.security.core/src/org/argeo/security/core/KeyBasedSystemExecutionService.java
@@ -0,0 +1,64 @@
+/*
+ * Copyright (C) 2007-2012 Argeo GmbH
+ *
+ * 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 org.argeo.security.core;
+
+import java.util.concurrent.Callable;
+import java.util.concurrent.Executors;
+import java.util.concurrent.Future;
+import java.util.concurrent.FutureTask;
+
+import org.argeo.ArgeoException;
+import org.argeo.security.SystemExecutionService;
+
+/**
+ * Implementation of a {@link SystemExecutionService} using a key-based
+ * {@link InternalAuthentication}
+ */
+public class KeyBasedSystemExecutionService extends AbstractSystemExecution
+               implements SystemExecutionService {
+       public void execute(Runnable runnable) {
+               try {
+                       wrapWithSystemAuthentication(Executors.callable(runnable)).call();
+               } catch (RuntimeException e) {
+                       throw e;
+               } catch (Exception e) {
+                       throw new ArgeoException(
+                                       "Exception when running system authenticated task", e);
+               }
+       }
+
+       public <T> Future<T> submit(Callable<T> task) {
+               FutureTask<T> future = new FutureTask<T>(
+                               wrapWithSystemAuthentication(task));
+               future.run();
+               return future;
+       }
+
+       protected <T> Callable<T> wrapWithSystemAuthentication(
+                       final Callable<T> runnable) {
+               return new Callable<T>() {
+
+                       public T call() throws Exception {
+                               authenticateAsSystem();
+                               try {
+                                       return runnable.call();
+                               } finally {
+//                                     deauthenticateAsSystem();
+                               }
+                       }
+               };
+       }
+}