CmsScriptRwtApplication.java

   1 package org.argeo.cms.script;
   2
   3 import java.io.IOException;
   4 import java.io.InputStreamReader;
   5 import java.io.Reader;
   6 import java.net.URL;
   7
   8 import javax.jcr.Repository;
   9 import javax.script.ScriptEngine;
  10 import javax.script.ScriptEngineManager;
  11 import javax.script.ScriptException;
  12
  13 import org.apache.commons.logging.Log;
  14 import org.apache.commons.logging.LogFactory;
  15 import org.argeo.cms.CmsException;
  16 import org.eclipse.rap.rwt.application.Application;
  17 import org.eclipse.rap.rwt.application.ApplicationConfiguration;
  18 import org.osgi.framework.BundleContext;
  19 import org.osgi.framework.BundleException;
  20 import org.osgi.framework.wiring.BundleWiring;
  21
  22 public class CmsScriptRwtApplication implements ApplicationConfiguration {
  23         public final static String APP = "APP";
  24         public final static String BC = "BC";
  25
  26         private final Log log = LogFactory.getLog(CmsScriptRwtApplication.class);
  27
  28         BundleContext bundleContext;
  29         Repository repository;
  30
  31         ScriptEngine engine;
  32
  33         public void init(BundleContext bundleContext) {
  34                 this.bundleContext = bundleContext;
  35                 // System.out.println("bundleContext=" + bundleContext);
  36                 // System.out.println("repository=" + repository);
  37                 ScriptEngineManager scriptEngineManager = new ScriptEngineManager();
  38                 ClassLoader bundleCl = bundleContext.getBundle().adapt(BundleWiring.class).getClassLoader();
  39                 ClassLoader currentCcl = Thread.currentThread().getContextClassLoader();
  40                 try {
  41                         Thread.currentThread().setContextClassLoader(bundleCl);
  42                         engine = scriptEngineManager.getEngineByName("JavaScript");
  43                 } catch (Exception e) {
  44                         e.printStackTrace();
  45                 } finally {
  46                         Thread.currentThread().setContextClassLoader(currentCcl);
  47                 }
  48
  49                 // Load script
  50                 URL appUrl = bundleContext.getBundle().getEntry("cms/app.js");
  51                 // System.out.println("Loading " + appUrl);
  52                 // System.out.println("Loading " + appUrl.getHost());
  53                 // System.out.println("Loading " + appUrl.getPath());
  54
  55                 CmsScriptApp app = new CmsScriptApp(engine);
  56                 engine.put(APP, app);
  57                 engine.put(BC, bundleContext);
  58                 try (Reader reader = new InputStreamReader(appUrl.openStream())) {
  59                         engine.eval(reader);
  60                 } catch (IOException | ScriptException e) {
  61                         throw new CmsException("Cannot execute " + appUrl, e);
  62                 }
  63
  64                 if (log.isDebugEnabled())
  65                         log.debug("CMS script app initialized from " + appUrl);
  66
  67         }
  68
  69         public void destroy(BundleContext bundleContext) {
  70                 engine = null;
  71         }
  72
  73         @Override
  74         public void configure(Application application) {
  75                 load(application);
  76         }
  77
  78         void load(Application application) {
  79                 CmsScriptApp app = getApp();
  80                 app.apply(bundleContext, repository, application);
  81                 if (log.isDebugEnabled())
  82                         log.debug("CMS script app loaded to " + app.getWebPath());
  83         }
  84
  85         CmsScriptApp getApp() {
  86                 if (engine == null)
  87                         throw new IllegalStateException("CMS script app is not initialized");
  88                 return (CmsScriptApp) engine.get(APP);
  89         }
  90
  91         void update() {
  92
  93                 try {
  94                         bundleContext.getBundle().update();
  95                 } catch (BundleException e) {
  96                         e.printStackTrace();
  97                 }
  98         }
  99
 100         public void setRepository(Repository repository) {
 101                 this.repository = repository;
 102         }
 103
 104 }