Make Tomcat much easier to configure.

[lgpl/argeo-commons.git] / server / runtime / org.argeo.server.catalina.start / src / main / java / org / argeo / catalina / start / CatalinaActivator.java

diff --git a/server/runtime/org.argeo.server.catalina.start/src/main/java/org/argeo/catalina/start/CatalinaActivator.java b/server/runtime/org.argeo.server.catalina.start/src/main/java/org/argeo/catalina/start/CatalinaActivator.java
new file mode 100644 (file)
index 0000000..2656490
--- /dev/null
+++ b/server/runtime/org.argeo.server.catalina.start/src/main/java/org/argeo/catalina/start/CatalinaActivator.java
@@ -0,0 +1,93 @@
+package org.argeo.catalina.start;
+
+import java.io.File;
+import java.io.InputStream;
+import java.net.URL;
+import java.util.Properties;
+
+import org.apache.commons.io.IOUtils;
+import org.osgi.framework.BundleContext;
+import org.springframework.osgi.web.tomcat.internal.Activator;
+
+/** Starts Catalina (hacked from Spring OSGi 1.0) */
+public class CatalinaActivator extends Activator {
+       private final static String ARGEO_OSGI_DATA_DIR = "argeo.osgi.data.dir";
+       /** System properties used to override Tomcat XML config URL */
+       public final static String ARGEO_SERVER_TOMCAT_CONFIG = "argeo.server.tomcat.config";
+
+       public void start(BundleContext context) throws Exception {
+               if (!System.getProperties().containsKey(ARGEO_OSGI_DATA_DIR)) {
+                       String osgiInstanceArea = System.getProperty("osgi.instance.area");
+                       String osgiInstanceAreaDefault = System
+                                       .getProperty("osgi.instance.area.default");
+                       String tempDir = System.getProperty("java.io.tmpdir");
+
+                       File dataDir = null;
+                       if (osgiInstanceArea != null) {
+                               // within OSGi with -data specified
+                               osgiInstanceArea = removeFilePrefix(osgiInstanceArea);
+                               dataDir = new File(osgiInstanceArea);
+                       } else if (osgiInstanceAreaDefault != null) {
+                               // within OSGi without -data specified
+                               osgiInstanceAreaDefault = removeFilePrefix(osgiInstanceAreaDefault);
+                               dataDir = new File(osgiInstanceAreaDefault);
+                       } else {// outside OSGi
+                               dataDir = new File(tempDir + File.separator + "osgiData");
+                       }
+
+                       System.setProperty(ARGEO_OSGI_DATA_DIR, dataDir.getAbsolutePath());
+               }
+
+               // Load config properties and put them in system properties so that they
+               // can be used in tomcat conf
+               Properties confProps = new Properties();
+               URL propsUrl = context.getBundle().getResource("tomcat.properties");
+               if (propsUrl != null) {
+                       InputStream in = null;
+                       try {
+                               in = propsUrl.openStream();
+                               confProps.load(in);
+                       } catch (Exception e) {
+                               throw new RuntimeException("Cannot read catalina properties.",
+                                               e);
+                       } finally {
+                               IOUtils.closeQuietly(in);
+                       }
+
+                       for (Object key : confProps.keySet()) {
+                               // System properties have priority
+                               if (!System.getProperties().containsKey(key)) {
+                                       System.setProperty(key.toString(),
+                                                       confProps.getProperty(key.toString()));
+                               }
+                       }
+               }
+
+               // calling Catalina.setCatalinaHome(String) or
+               // Catalina.setCatalinaBase(String) does the same
+               if (System.getProperty("catalina.home") == null)
+                       System.setProperty("catalina.home",
+                                       System.getProperty(ARGEO_OSGI_DATA_DIR) + "/tomcat");
+               if (System.getProperty("catalina.base") == null)
+                       System.setProperty("catalina.base",
+                                       System.getProperty(ARGEO_OSGI_DATA_DIR) + "/tomcat");
+
+               // Call Spring starter
+               super.start(context);
+       }
+
+       @Override
+       public void stop(BundleContext context) throws Exception {
+               super.stop(context);
+       }
+
+       protected String removeFilePrefix(String url) {
+               if (url.startsWith("file:"))
+                       return url.substring("file:".length());
+               else if (url.startsWith("reference:file:"))
+                       return url.substring("reference:file:".length());
+               else
+                       return url;
+       }
+
+}