Examples of com.adito.extensions.ExtensionBundle

com.adito.extensions.ExtensionBundle
Extension bundles describe a collection of Extension Descriptors.
A bundle may come from one of two places, either the Adito Application Store or from an installed extension bundle retrieved via the Repository.
If from the Adito Application Store, the descriptor will not contain all details, only enough to determine the name, description, versions, dependencies and a few others pieces of information. Such bundles do not have a life cycle in the way local extension bundles do (i.e. be Started, Stopped or Activated).
Local extension bundles must go through 3 or 4 phases.
- Phase 1. Loading. The XML extension descriptors are loaded and parsed. No change the state of Adito is made at this stage. Once this is complete we know the order the extensions should be started
- Phase 2. Starting. All extensions now have their {@link ExtensionDescriptor#start()} method called. This in turn delegates thestart to the Extension Type implementation in use. For example, the {@link PluginType} would create the plug-in instance and invoke the{@link Plugin#startPlugin(com.adito.extensions.types.PluginDefinition,ExtensionDescriptor,Element)}. If starting fails, an exception is thrown and the extension will be Stopped. method on it.
- Phase 3. Activation. Only the Plug-ins really use this as they require two phases of initialisation. If activate fails, an exception is thrown and the extension will be Stopped.
- Phase 4. Stopping. May occur either after Starting or Activation. During this phase the extension should clean up as much as possible (deregister property definitions, user databases or any other extension point).


  public Collection<String> getMountNames() throws Exception {
    Iterator itr = ExtensionStore.getInstance().getExtensionBundles().iterator();
    List<String> l = new ArrayList<String>();
    while (itr.hasNext()) {
      ExtensionBundle b = (ExtensionBundle) itr.next();
      l.add(b.getId());
    }
    return l;
  }

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      loadBundle(descriptors[0], false);
    }
  }


  private void loadBundle(File descriptor, boolean devExtension) throws ExtensionException {
    ExtensionBundle bundle = new ExtensionBundle(descriptor, devExtension);
    loadBundle(bundle);
  }

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  }


  private void loadBundle(ExtensionBundle bundle) throws ExtensionException {


    bundle.load();
    ExtensionBundle oldBundle = (ExtensionBundle) extensionBundles.get(bundle.getId());


    if (oldBundle != null && oldBundle.isDevExtension()) {
      throw new ExtensionException(ExtensionException.CANNOT_REPLACE_DEV_EXTENSION, bundle.getId());
    }


    bundle.setCategory(ExtensionStore.INSTALLED_CATEGORY);
    try {

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   * @param bundleId
   * @throws ExtensionException
   * @throws IOException
   */
  public void systemDisableExtension(String bundleId) throws ExtensionException, IOException {
    ExtensionBundle extensionBundle = getExtensionBundle(bundleId);
    extensionBundle.setStatus(ExtensionBundle.ExtensionBundleStatus.SYSTEM_DISABLED);
    ExtensionStoreStatusManager.systemDisableExtension(bundleId);
  }

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  /**
   * @param bundleId
   * @throws Exception
   */
  public void disableExtension(String bundleId) throws Exception {
    ExtensionBundle extensionBundle = getExtensionBundle(bundleId);
    extensionBundle.setStatus(ExtensionBundle.ExtensionBundleStatus.DISABLED);
    ExtensionStoreStatusManager.disableExtension(bundleId);
    if(extensionBundle.isContainsPlugin()) {
      extensionBundle.setType(ExtensionBundle.TYPE_PENDING_STATE_CHANGE);
    }
  }

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  /**
   * @param bundleId
   * @throws Exception
   */
  public void enableExtension(String bundleId) throws Exception {
    ExtensionBundle extensionBundle = getExtensionBundle(bundleId);
    extensionBundle.setStatus(ExtensionBundle.ExtensionBundleStatus.ENABLED);
    ExtensionStoreStatusManager.enableExtension(bundleId);
    if(extensionBundle.isContainsPlugin()) {
      extensionBundle.setType(ExtensionBundle.TYPE_PENDING_STATE_CHANGE);
    }
  }

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  /**
   * @return ExtensionDescriptor
   */
  public ExtensionDescriptor getAgentApplication() {
    try {
      ExtensionBundle bundle = getExtensionBundle(AGENT_EXTENSION_BUNDLE_ID);
      return bundle != null ? (ExtensionDescriptor) bundle.getApplicationDescriptor(AGENT_EXTENSION_BUNDLE_ID) : null;
    } catch (Exception e) {
      log.error("Failed to get agent descriptor. Loaded?", e);
      return null;
    }
  }

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  @SuppressWarnings("unchecked")
  public void reload(String id) throws ExtensionException {
    if (log.isInfoEnabled())
      log.info("Reloading application bundle " + id);
    if (isExtensionLoaded(id)) {
      ExtensionBundle bundle = getExtensionBundle(id);
      try {
        bundle.load();
      } catch (ExtensionException ee) {
        log.warn("Failed to reload extension descriptor.", ee);
        extensionBundles.remove(id);
        extensionBundlesList.remove(bundle);
        throw ee;

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   * @param id extension bundle id
   * @return true if the extension has been loaded
   */
  public boolean isExtensionLoaded(String id) {
    for (Iterator i = extensionBundlesList.iterator(); i.hasNext();) {
      ExtensionBundle bundle = (ExtensionBundle) i.next();
      if (bundle.containsApplication(id)) {
        return true;
      }
    }
    return false;
  }

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      store = getDownloadableExtensionStoreDescriptor(true);
      if (store == null) {
        throw new ExtensionException(ExtensionException.INTERNAL_ERROR, "No downloadable applications.");
      }


      ExtensionBundle bundle = store.getApplicationBundle(id);
      if (bundle == null) {
        throw new ExtensionException(ExtensionException.INVALID_EXTENSION, id);
      }


      // Check host version
      Context context = ContextHolder.getContext();
      if (bundle.getRequiredHostVersion() != null && bundle.getRequiredHostVersion().compareTo(context.getVersion()) > 0) {
        throw new ExtensionException(ExtensionException.INSUFFICIENT_ADITO_HOST_VERSION,
                bundle.getId(),
                bundle.getRequiredHostVersion().toString());
      }  


      // Install all dependencies
      if (bundle.getDependencies() != null) {
        for (String dep : bundle.getDependencies()) {
          if (isExtensionBundleLoaded(dep)) {
            ExtensionBundle current = getExtensionBundle(dep);
            ExtensionBundle available = store.getApplicationBundle(dep);
            if(available != null) {
              if (!current.isDevExtension() && isNewerVersionAvailable(available, current)) {
                if (log.isInfoEnabled())
                  log.info("Found a dependency (" + dep + "), that needs upgrading. " + current.getVersion().toString() + " is the current version, " +  available.getVersion().toString() + " is available. Installing now");
                installExtensionFromStore(current.getId(), available.getVersion().toString(), request);
              }
            }
          } else {
            try {
              if (log.isInfoEnabled())

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