--- /dev/null
+/*\r
+ * Copyright (C) 2007-2012 Argeo GmbH\r
+ *\r
+ * Licensed under the Apache License, Version 2.0 (the "License");\r
+ * you may not use this file except in compliance with the License.\r
+ * You may obtain a copy of the License at\r
+ *\r
+ * http://www.apache.org/licenses/LICENSE-2.0\r
+ *\r
+ * Unless required by applicable law or agreed to in writing, software\r
+ * distributed under the License is distributed on an "AS IS" BASIS,\r
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r
+ * See the License for the specific language governing permissions and\r
+ * limitations under the License.\r
+ */\r
+package org.argeo.eclipse.spring;\r
+\r
+import static java.text.MessageFormat.format;\r
+\r
+import org.apache.commons.logging.Log;\r
+import org.apache.commons.logging.LogFactory;\r
+import org.eclipse.core.runtime.Platform;\r
+import org.osgi.framework.Bundle;\r
+import org.osgi.framework.BundleContext;\r
+import org.osgi.framework.BundleException;\r
+import org.osgi.framework.FrameworkUtil;\r
+import org.osgi.framework.InvalidSyntaxException;\r
+import org.osgi.util.tracker.ServiceTracker;\r
+import org.springframework.context.ApplicationContext;\r
+\r
+/**\r
+ * Tracks Spring application context published as services.\r
+ * \r
+ * @author Heiko Seeberger\r
+ * @author Mathieu Baudier\r
+ */\r
+class ApplicationContextTracker {\r
+ private final static Log log = LogFactory\r
+ .getLog(ApplicationContextTracker.class);\r
+\r
+ private static final String FILTER = "(&(objectClass=org.springframework.context.ApplicationContext)" //$NON-NLS-1$\r
+ + "(org.springframework.context.service.name={0}))"; //$NON-NLS-1$\r
+\r
+ public final static String APPLICATION_CONTEXT_TRACKER_TIMEOUT = "org.argeo.eclipse.spring.applicationContextTrackerTimeout";\r
+\r
+ private static Long defaultTimeout = Long.parseLong(System.getProperty(\r
+ APPLICATION_CONTEXT_TRACKER_TIMEOUT, "30000"));\r
+\r
+ @SuppressWarnings("rawtypes")\r
+ private ServiceTracker applicationContextServiceTracker;\r
+\r
+ /**\r
+ * @param contributorBundle\r
+ * OSGi bundle for which the Spring application context is to be\r
+ * tracked. Must not be null!\r
+ * @param factoryBundleContext\r
+ * BundleContext object which can be used to track services\r
+ * @throws IllegalArgumentException\r
+ * if the given bundle is null.\r
+ */\r
+ @SuppressWarnings({ "unchecked", "rawtypes" })\r
+ public ApplicationContextTracker(final Bundle contributorBundle,\r
+ final BundleContext factoryBundleContext) {\r
+ final String filter = format(FILTER,\r
+ contributorBundle.getSymbolicName());\r
+ try {\r
+ applicationContextServiceTracker = new ServiceTracker(\r
+ factoryBundleContext, FrameworkUtil.createFilter(filter),\r
+ null);\r
+ // applicationContextServiceTracker.open();\r
+ } catch (final InvalidSyntaxException e) {\r
+ e.printStackTrace();\r
+ }\r
+ }\r
+\r
+ public void open() {\r
+ if (applicationContextServiceTracker != null) {\r
+ applicationContextServiceTracker.open();\r
+ }\r
+ }\r
+\r
+ public void close() {\r
+ if (applicationContextServiceTracker != null) {\r
+ applicationContextServiceTracker.close();\r
+ }\r
+ }\r
+\r
+ public ApplicationContext getApplicationContext() {\r
+ ApplicationContext applicationContext = null;\r
+ if (applicationContextServiceTracker != null) {\r
+ try {\r
+ applicationContext = (ApplicationContext) applicationContextServiceTracker\r
+ .waitForService(defaultTimeout);\r
+ } catch (InterruptedException e) {\r
+ e.printStackTrace();\r
+ }\r
+ }\r
+ return applicationContext;\r
+ }\r
+\r
+ @Override\r
+ protected void finalize() throws Throwable {\r
+ close();\r
+ super.finalize();\r
+ }\r
+\r
+ static ApplicationContext getApplicationContext(String bundleSymbolicName) {\r
+ Bundle contributorBundle = Platform.getBundle(bundleSymbolicName);\r
+ return getApplicationContext(contributorBundle);\r
+ }\r
+\r
+ static ApplicationContext getApplicationContext(\r
+ final Bundle contributorBundle) {\r
+ if (log.isTraceEnabled())\r
+ log.trace("Get application context for bundle " + contributorBundle);\r
+\r
+ // Start if not yet started (also if in STARTING state, may be lazy)\r
+ if (contributorBundle.getState() != Bundle.ACTIVE) {\r
+ if (log.isTraceEnabled())\r
+ log.trace("Starting bundle: "\r
+ + contributorBundle.getSymbolicName());\r
+ // Thread startBundle = new Thread("Start bundle "\r
+ // + contributorBundle.getSymbolicName()) {\r
+ // public void run() {\r
+ try {\r
+ contributorBundle.start();\r
+ } catch (BundleException e) {\r
+ log.error("Cannot start bundle " + contributorBundle, e);\r
+ }\r
+ // }\r
+ // };\r
+ // startBundle.start();\r
+ // try {\r
+ // startBundle.join(10 * 1000l);\r
+ // } catch (InterruptedException e) {\r
+ // // silent\r
+ // }\r
+ }\r
+\r
+ final ApplicationContextTracker applicationContextTracker = new ApplicationContextTracker(\r
+ contributorBundle, contributorBundle.getBundleContext());\r
+ ApplicationContext applicationContext = null;\r
+ try {\r
+ applicationContextTracker.open();\r
+ applicationContext = applicationContextTracker\r
+ .getApplicationContext();\r
+ } finally {\r
+ applicationContextTracker.close();\r
+ }\r
+ return applicationContext;\r
+ }\r
+}\r