public Path install()

in appengine-plugins-core/src/main/java/com/google/cloud/tools/managedcloudsdk/install/SdkInstaller.java [78:156]
61 lines of code
9 McCabe index (conditional complexity)

  public Path install(
      final ProgressListener progressListener, final ConsoleListener consoleListener)
      throws IOException, InterruptedException, SdkInstallerException, CommandExecutionException,
          CommandExitException {

    FileResourceProvider fileResourceProvider =
        fileResourceProviderFactory.newFileResourceProvider();

    // Cleanup, remove old downloaded archive if exists
    if (Files.isRegularFile(fileResourceProvider.getArchiveDestination())) {
      logger.info("Removing stale archive: " + fileResourceProvider.getArchiveDestination());
      Files.delete(fileResourceProvider.getArchiveDestination());
    }

    // Cleanup, remove old SDK directory if exists
    if (Files.exists(fileResourceProvider.getArchiveExtractionDestination())) {
      logger.info(
          "Removing stale install: " + fileResourceProvider.getArchiveExtractionDestination());

      MoreFiles.deleteRecursively(
          fileResourceProvider.getArchiveExtractionDestination(),
          RecursiveDeleteOption.ALLOW_INSECURE);
    }

    progressListener.start("Installing Cloud SDK", installerFactory != null ? 300 : 200);

    // download and verify
    Downloader downloader =
        downloaderFactory.newDownloader(
            fileResourceProvider.getArchiveSource(),
            fileResourceProvider.getArchiveDestination(),
            progressListener.newChild(100));
    downloader.download();
    if (!Files.isRegularFile(fileResourceProvider.getArchiveDestination())) {
      throw new SdkInstallerException(
          "Download succeeded but valid archive not found at "
              + fileResourceProvider.getArchiveDestination());
    }

    try {
      // extract and verify
      extractorFactory
          .newExtractor(
              fileResourceProvider.getArchiveDestination(),
              fileResourceProvider.getArchiveExtractionDestination(),
              progressListener.newChild(100))
          .extract();
      if (!Files.isDirectory(fileResourceProvider.getExtractedSdkHome())) {
        throw new SdkInstallerException(
            "Extraction succeeded but valid sdk home not found at "
                + fileResourceProvider.getExtractedSdkHome());
      }
    } catch (UnknownArchiveTypeException e) {
      // fileResourceProviderFactory.newFileResourceProvider() creates a fileResourceProvider that
      // returns either .tar.gz or .zip for getArchiveDestination().
      throw new RuntimeException(e);
    }

    // install if necessary
    if (installerFactory != null) {
      installerFactory
          .newInstaller(
              fileResourceProvider.getExtractedSdkHome(),
              progressListener.newChild(100),
              consoleListener,
              environmentVariables)
          .install();
    }

    // verify final state
    if (!Files.isRegularFile(fileResourceProvider.getExtractedGcloud())) {
      throw new SdkInstallerException(
          "Installation succeeded but gcloud executable not found at "
              + fileResourceProvider.getExtractedGcloud());
    }

    progressListener.done();
    return fileResourceProvider.getExtractedSdkHome();
  }