Пример #1
0
// Returns the resulting file or in case of extraction the destination
// directory (for logging).
static Try<string> fetchThroughCache(
    const FetcherInfo::Item& item,
    const Option<string>& cacheDirectory,
    const string& sandboxDirectory,
    const Option<string>& frameworksHome)
{
  if (cacheDirectory.isNone() || cacheDirectory.get().empty()) {
    return Error("Cache directory not specified");
  }

  if (!item.has_cache_filename() || item.cache_filename().empty()) {
    // This should never happen if this program is used by the Mesos
    // slave and could then be a CHECK. But other uses are possible.
    return Error("No cache file name for: " + item.uri().value());
  }

  CHECK_NE(FetcherInfo::Item::BYPASS_CACHE, item.action())
    << "Unexpected fetcher action selector";

  if (item.action() == FetcherInfo::Item::DOWNLOAD_AND_CACHE) {
    LOG(INFO) << "Downloading into cache";

    Try<Nothing> mkdir = os::mkdir(cacheDirectory.get());
    if (mkdir.isError()) {
      return Error("Failed to create fetcher cache directory '" +
                   cacheDirectory.get() + "': " + mkdir.error());
    }

    Try<string> downloaded = download(
        item.uri().value(),
        path::join(cacheDirectory.get(), item.cache_filename()),
        frameworksHome);

    if (downloaded.isError()) {
      return Error(downloaded.error());
    }
  }

  return fetchFromCache(item, cacheDirectory.get(), sandboxDirectory);
}
Пример #2
0
// Returns the resulting file or in case of extraction the destination
// directory (for logging).
static Try<string> fetch(
    const FetcherInfo::Item& item,
    const Option<string>& cacheDirectory,
    const string& sandboxDirectory,
    const Option<string>& frameworksHome)
{
  LOG(INFO) << "Fetching URI '" << item.uri().value() << "'";

  if (item.action() == FetcherInfo::Item::BYPASS_CACHE) {
    return fetchBypassingCache(
        item.uri(),
        sandboxDirectory,
        frameworksHome);
  }

  return fetchThroughCache(
      item,
      cacheDirectory,
      sandboxDirectory,
      frameworksHome);
}