Examples of hudson.FilePath.installIfNecessaryFrom()

hudson.FilePath.installIfNecessaryFrom()
Given a tgz/zip file, extracts it to the given target directory, if necessary.
This method is a convenience method designed for installing a binary package to a location that supports upgrade and downgrade. Specifically,
- If the target directory doesn't exist {@linkplain #mkdirs() it'll be created}.
- The timestamp of the .tgz file is left in the installation directory upon extraction.
- If the timestamp left in the directory doesn't match with the timestamp of the current archive file, the directory contents will be discarded and the archive file will be re-extracted.
- If the connection is refused but the target directory already exists, it is left alone.
@param archive The resource that represents the tgz/zip file. This URL must support the "Last-Modified" header. (Most common usage is to get this from {@link ClassLoader#getResource(String)}) @param listener If non-null, a message will be printed to this listener once this method decides to extract an archive. @return true if the archive was extracted. false if the extraction was skipped because the target directory was considered up to date. @since 1.299

      LOGGER.log(Level.INFO, "install start for Hadoop Ruby");
      StreamTaskListener listener = new StreamTaskListener(System.out);
      File rootDir = Hudson.getInstance().getRootDir();
      rootDir = new File(rootDir, "hadoop-ruby");
      FilePath distDir = new FilePath(rootDir);
      distDir.installIfNecessaryFrom(ItemListenerImpl.class
          .getResource("hadoop-ruby.tgz"), listener, "Hadoop Ruby");
      LOGGER.log(Level.INFO, "install finished for Hadoop Ruby");


    } catch (Exception e) {
      LOGGER.log(Level.WARNING, "Failed to install Hadoop Ruby", e);

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        return subdir;
    }


    public FilePath performInstallation(ToolInstallation tool, Node node, TaskListener log) throws IOException, InterruptedException {
        FilePath dir = preferredLocation(tool, node);
        if (dir.installIfNecessaryFrom(new URL(url), log, "Unpacking " + url + " to " + dir + " on " + node.getDisplayName())) {
            dir.act(new ChmodRecAPlusX());
        }
        if (subdir == null) {
            return dir;
        } else {

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        }


        if(isUpToDate(expected,inst))
            return expected;


        if(expected.installIfNecessaryFrom(new URL(inst.url), log, "Unpacking " + inst.url + " to " + expected + " on " + node.getDisplayName())) {
            expected.child(".timestamp").delete(); // we don't use the timestamp
            FilePath base = findPullUpDirectory(expected);
            if(base!=null && base!=expected)
                base.moveAllChildrenTo(expected);
            // leave a record for the next up-to-date check

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        // Download the SDK, if required
        boolean wasNowInstalled = installDir.act(new FileCallable<Boolean>() {
            public Boolean invoke(File f, VirtualChannel channel)
                    throws InterruptedException, IOException {
                String msg = Messages.DOWNLOADING_SDK_FROM(downloadUrl);
                return installDir.installIfNecessaryFrom(downloadUrl, listener, msg);
            }
            private static final long serialVersionUID = 1L;
        });


        if (wasNowInstalled) {

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        }


        if(isUpToDate(expected,inst))
            return expected;


        if(expected.installIfNecessaryFrom(new URL(inst.url), log, "Unpacking " + inst.url + " to " + expected + " on " + node.getDisplayName())) {
            expected.child(".timestamp").delete(); // we don't use the timestamp
            FilePath base = findPullUpDirectory(expected);
            if(base!=null && base!=expected)
                base.moveAllChildrenTo(expected);
            // leave a record for the next up-to-date check

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        return subdir;
    }


    public FilePath performInstallation(ToolInstallation tool, Node node, TaskListener log) throws IOException, InterruptedException {
        FilePath dir = preferredLocation(tool, node);
        if (dir.installIfNecessaryFrom(new URL(url), log, "Unpacking " + url + " to " + dir + " on " + node.getDisplayName())) {
            dir.act(new ChmodRecAPlusX());
        }
        if (subdir == null) {
            return dir;
        } else {

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