def _checkout(self):
"""Performs a shallow clone of the repository into the downloads
directory. This function can be called repeatedly. If the project has
already been checked out at this version, it will be a no-op. Returns
the path to the checked out directory."""
try:
dir_ = git.clone_and_checkout(self.git,
get_downloads_path(),
branch=self.revision,
dirname=self._checkout_name)
except ExecutableError as exc:
if exc.cmd and exc.cmd[0] == 'git':
logger.error(
'Make sure git is installed on your machine. More '
'information: '
'https://docs.getdbt.com/docs/package-management')
raise
return os.path.join(get_downloads_path(), dir_)
def install(self, project, renderer):
metadata = self.fetch_metadata(project, renderer)
tar_name = '{}.{}.tar.gz'.format(self.package, self.version)
tar_path = os.path.realpath(
os.path.join(get_downloads_path(), tar_name))
system.make_directory(os.path.dirname(tar_path))
download_url = metadata.downloads.tarball
system.download(download_url, tar_path)
deps_path = project.modules_path
package_name = self.get_project_name(project, renderer)
system.untar_package(tar_path, deps_path, package_name)