Examples of org.eclipse.core.filesystem.IFileStore

org.eclipse.core.filesystem.IFileStore
A file store is responsible for storage and retrieval of a single file in some file system. The actual protocols and media used for communicating with the file system are abstracted away by this interface, apart from the store's ability to represent itself as a hierarchical {@link java.net.URI}.
File store instances are lightweight handle objects; a store knows how to access and store file information, but does not retain a large memory footprint or operating system connections such as sockets or file handles. The presence of a file store instance does not imply the existence of a corresponding file in the file system represented by that store. A store that has a corresponding file in its file system is said to exist.

As much as possible, implementations of this API maintain the characteristics of the underlying file system represented by this store. For example, store instances will be case-sensitive and case-preserving only when representing case-sensitive and case-preserving file systems.

This interface is not intended to be implemented by clients. File store implementations must subclass {@link FileStore} rather than implementingthis interface directly.
@since org.eclipse.core.filesystem 1.0

   * 
   * @return the root location.
   */
  public static IFileStore getRootLocation() {
    URI platformLocationURI = Activator.getDefault().getRootLocationURI();
    IFileStore root = null;
    try {
      root = EFS.getStore(platformLocationURI);
    } catch (CoreException e) {
      //this is fatal, we can't access the platform instance location
      throw new Error("Failed to access platform instance location", e); //$NON-NLS-1$

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    if (locationString == null) {
      statusHandler.handleRequest(request, response, new ServerStatus(IStatus.ERROR, HttpServletResponse.SC_BAD_REQUEST, "Copy or move request must specify source location", null));
      return false;
    }
    try {
      IFileStore source = resolveSourceLocation(request, locationString);
      if (source == null) {
        statusHandler.handleRequest(request, response, new ServerStatus(IStatus.ERROR, HttpServletResponse.SC_NOT_FOUND, NLS.bind("Source does not exist: ", locationString), null));
        return false;
      } else if (source.isParentOf(toCreate)) {
        statusHandler.handleRequest(request, response, new ServerStatus(IStatus.ERROR, HttpServletResponse.SC_BAD_REQUEST, "The destination cannot be a descendent of the source location", null));
        return false;
      }
      boolean allowOverwrite = (options & CREATE_NO_OVERWRITE) == 0;
      int efsOptions = allowOverwrite ? EFS.OVERWRITE : EFS.NONE;
      try {
        if (isCopy) {
          source.copy(toCreate, efsOptions, null);
        } else {
          source.move(toCreate, efsOptions, null);
          // Path format is /file/workspaceId/projectId/[location to folder]
          Path path = new Path(locationString);
          if (path.segmentCount() == 3 && path.segment(0).equals("file")) {
            // The folder is a project, remove the metadata
            OrionConfiguration.getMetaStore().deleteProject(path.segment(1), source.getName());
          }
        }
      } catch (CoreException e) {
        if (!source.fetchInfo(EFS.NONE, null).exists()) {
          statusHandler.handleRequest(request, response, new ServerStatus(IStatus.ERROR, HttpServletResponse.SC_NOT_FOUND, NLS.bind("Source does not exist: ", locationString), e));
          return false;
        }
        if (e.getStatus().getCode() == EFS.ERROR_EXISTS) {
          statusHandler.handleRequest(request, response, new ServerStatus(IStatus.ERROR, HttpServletResponse.SC_PRECONDITION_FAILED, "A file or folder with the same name already exists at this location", null));

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    }
    return other;
  }


  public IFileStore mkdir(int options, IProgressMonitor monitor) throws CoreException {
    IFileStore mkdir = wrapped.mkdir(options, monitor);


    notifyOfWrite(new ChangeEvent(source, ChangeType.MKDIR, mkdir));


    // Tested by CoreFilesTest.testListenerCreateDirectory()
    return wrap(source, mkdir);

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    //don't allow anyone to mess with metadata
    if (path.segmentCount() > 0 && ".metadata".equals(path.segment(0))) { //$NON-NLS-1$
      handleException(resp, new ServerStatus(IStatus.ERROR, HttpServletResponse.SC_FORBIDDEN, NLS.bind("Forbidden: {0}", pathInfo), null));
      return;
    }
    IFileStore file = getFileStore(req, path);
    IFileStore testLink = file;
    while (testLink != null) {
      IFileInfo info = testLink.fetchInfo();
      if (info.getAttribute(EFS.ATTRIBUTE_SYMLINK)) {
        if (file == testLink) {
          handleException(resp, new ServerStatus(IStatus.ERROR, HttpServletResponse.SC_FORBIDDEN, NLS.bind("Forbidden: {0}", EncodingUtils.encodeForHTML(pathInfo.toString())), null));
        } else {
          handleException(resp, new ServerStatus(IStatus.ERROR, HttpServletResponse.SC_NOT_FOUND, NLS.bind("File not found: {0}", EncodingUtils.encodeForHTML(pathInfo.toString())), null));
        }
        return;
      }
      testLink = testLink.getParent();
    }


    if (file == null) {
      handleException(resp, new ServerStatus(IStatus.ERROR, HttpServletResponse.SC_NOT_FOUND, NLS.bind("File not found: {0}", EncodingUtils.encodeForHTML(pathInfo.toString())), null));
      return;

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  public static IFileStore getFileStore(HttpServletRequest request, WorkspaceInfo workspace) {
    try {
      if (workspace.getUniqueId() == null) {
        return null;
      }
      IFileStore fileStore = OrionConfiguration.getMetaStore().getWorkspaceContentLocation(workspace.getUniqueId());
      return wrap(workspace, fileStore);
    } catch (CoreException e) {
      LogHelper.log(new Status(IStatus.WARNING, Activator.PI_SERVER_SERVLETS, 1, "An error occurred when getting workspace store for path", e));
      // fallback and return null
    }

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    IPath localPath = new Path(location.getPath());
    if (localPath.isAbsolute()) {
      return wrap(project, EFS.getLocalFileSystem().getStore(localPath));
    }
    //treat relative location as relative to the file system root
    IFileStore root = OrionConfiguration.getMetaStore().getUserHome(request.getRemoteUser());
    return wrap(project, root.getChild(location.toString()));
  }

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  @Override
  public File getDeploymentPackage(IFileStore contentLocation) throws IOException, CoreException {


    /* require a package.json file present */
    IFileStore packageStore = contentLocation.getChild(NodeJSConstants.PACKAGE_JSON);
    if (!packageStore.fetchInfo().exists())
      return null;


    InputStream is = null;
    JSONObject packageJSON = null;


    try {


      is = packageStore.openInputStream(EFS.NONE, null);
      packageJSON = new JSONObject(new JSONTokener(new InputStreamReader(is)));


      if (!packageJSON.has(NodeJSConstants.DEPENDENCIES))
        packageJSON.put(NodeJSConstants.DEPENDENCIES, new JSONObject());

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          Target target = computeTarget.getTarget();


          /* parse the application manifest */
          String manifestAppName = null;
          ManifestParseTree manifest = null;
          IFileStore appStore = null;


          if (contentLocation != null && state == null) {


            /* check for non-manifest deployment */
            if (manifestJSON != null) {


              ParseManifestJSONCommand parseManifestJSONCommand = new ParseManifestJSONCommand(manifestJSON, userId, contentLocation);
              status = parseManifestJSONCommand.doIt();
              if (!status.isOK())
                return status;


              /* get the manifest name */
              manifest = parseManifestJSONCommand.getManifest();
              appStore = parseManifestJSONCommand.getAppStore();


              if (manifest != null) {
                ManifestParseTree applications = manifest.get(CFProtocolConstants.V2_KEY_APPLICATIONS);
                if (applications.getChildren().size() > 0)
                  manifestAppName = applications.get(0).get(CFProtocolConstants.V2_KEY_NAME).getValue();


                if (persistManifest) {
                  /* non-manifest deployment - persist at contentLocation/manifest.yml */
                  IFileStore persistBaseLocation = parseManifestJSONCommand.getPersistBaseLocation();
                  IFileStore persistLocation = persistBaseLocation.getChild(ManifestConstants.MANIFEST_FILE_NAME);
                  manifest.persist(persistLocation);
                }
              }


            } else {

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  @Override
  public Plan getDeploymentPlan(IFileStore contentLocation, ManifestParseTree manifest) {


    /* a present package.json file determines a node.js application */
    IFileStore packageStore = contentLocation.getChild(NodeJSConstants.PACKAGE_JSON);
    if (!packageStore.fetchInfo().exists())
      return null;


    /* do not support multi-aplication manifests */
    if (manifest != null && ManifestUtils.hasMultipleApplications(manifest))
      return null;


    try {


      if (manifest == null)
        manifest = ManifestUtils.createBoilerplate(getApplicationName(contentLocation));


      ManifestParseTree application = manifest.get(ManifestConstants.APPLICATIONS).get(0);
      String defaultName = getApplicationName(contentLocation);


      set(application, ManifestConstants.NAME, defaultName);
      set(application, ManifestConstants.HOST, ManifestUtils.slugify(defaultName));


      set(application, ManifestConstants.MEMORY, ManifestUtils.DEFAULT_MEMORY);
      set(application, ManifestConstants.INSTANCES, ManifestUtils.DEFAULT_INSTANCES);
      set(application, ManifestConstants.PATH, ManifestUtils.DEFAULT_PATH);


      /* node.js application require a start command */
      if (application.has(ManifestConstants.COMMAND))
        return new Plan(getId(), getWizardId(), TYPE, manifest);


      InputStream is = null;
      try {


        is = packageStore.openInputStream(EFS.NONE, null);
        JSONObject packageJSON = new JSONObject(new JSONTokener(new InputStreamReader(is)));
        if (packageJSON.has(NodeJSConstants.SCRIPTS)) {
          JSONObject scripts = packageJSON.getJSONObject(NodeJSConstants.SCRIPTS);
          if (scripts.has(NodeJSConstants.START)) {
            application.put(ManifestConstants.COMMAND, scripts.getString(NodeJSConstants.START));
            return new Plan(getId(), getWizardId(), TYPE, manifest);
          }
        }


      } catch (JSONException ex) {
        /* can't parse the package.json, fail */
        return null;


      } finally {
        IOUtilities.safeClose(is);
      }


      /* look for server.js or app.js files */
      IFileStore serverJS = contentLocation.getChild(NodeJSConstants.SERVER_JS);
      if (serverJS.fetchInfo().exists()) {
        application.put(ManifestConstants.COMMAND, NodeJSConstants.NODE_SERVER_JS);
        return new Plan(getId(), getWizardId(), TYPE, manifest);
      }


      IFileStore appJS = contentLocation.getChild(NodeJSConstants.APP_JS);
      if (appJS.fetchInfo().exists()) {
        application.put(ManifestConstants.COMMAND, NodeJSConstants.NODE_APP_JS);
        return new Plan(getId(), getWizardId(), TYPE, manifest);
      }


      /* could not deduce command, mark as required */

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        return;
      }
      String workspaceId = workspaceIds.get(0);


      // see if the .bashrc already exists
      IFileStore workspaceContentLocation = metaStore.getWorkspaceContentLocation(workspaceId);
      IFileStore bashrc = workspaceContentLocation.getChild(".bashrc");
      if (bashrc.fetchInfo().exists()) {
        // .bashrc already exists, return
        return;
      }


      // copy the default bashrc if one exists on this system
      File skelFile = new File("/etc/skel/.bashrc");
      IFileStore skel = EFS.getLocalFileSystem().fromLocalFile(skelFile);
      if (skel.fetchInfo().exists()) {
        skel.copy(bashrc, EFS.NONE, null);
      }
      File bashrcFile = bashrc.toLocalFile(EFS.NONE, null);


      // append lines to the bashrc
      String lines = new String("set -o vi\nPS1=\"\\u:\\w[\\!] % \"\n");

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