Refactor pypi packages download

Issue-ID: OOM-1803

Change-Id: I65056208ed3e89777c3511650f8a5aab7396043b
Signed-off-by: Milan Verespej <m.verespej@partner.samsung.com>

diff --git a/build/download/pypi_downloader.py b/build/download/pypi_downloader.py
new file mode 100755 (executable)
index 0000000..4ab6b1f
--- /dev/null
+++ b/build/download/pypi_downloader.py
@@ -0,0 +1,101 @@
+#! /usr/bin/env python
+# -*- coding: utf-8 -*-
+
+#   COPYRIGHT NOTICE STARTS HERE
+
+#   Copyright 2019 © Samsung Electronics Co., Ltd.
+#
+#   Licensed under the Apache License, Version 2.0 (the "License");
+#   you may not use this file except in compliance with the License.
+#   You may obtain a copy of the License at
+#
+#       http://www.apache.org/licenses/LICENSE-2.0
+#
+#   Unless required by applicable law or agreed to in writing, software
+#   distributed under the License is distributed on an "AS IS" BASIS,
+#   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+#   See the License for the specific language governing permissions and
+#   limitations under the License.
+
+#   COPYRIGHT NOTICE ENDS HERE
+
+import argparse
+import datetime
+import logging
+import os
+import subprocess
+import sys
+import timeit
+
+from retrying import retry
+
+from command_downloader import CommandDownloader
+
+log = logging.getLogger(name=__name__)
+
+
+class PyPiDownloader(CommandDownloader):
+    def __init__(self, *list_args):
+        super().__init__('pypi packages', 'pip', *list_args)
+
+    @property
+    def check_table(self):
+        """
+        Return check table for pypi packages
+        :return: '' not implemented
+        """
+        log.warning('Check mode for pypi is not implemented.')
+        return ''
+
+    def _is_missing(self, item):
+        """
+        Check if item is missing
+        :param item: item to check
+        :return: True since don't know the actual filename
+        """
+        # always true don't know the name
+        return True
+
+    @retry(stop_max_attempt_number=5, wait_fixed=5000)
+    def _download_item(self, item):
+        """
+        Download pip package using pip
+        :param item: tuple(package_name, dst_dir) (name possibly with version specification)
+        """
+        package_name, dst_dir = item
+        command = 'pip download --dest {} {}'.format(dst_dir, package_name)
+        log.info('Running: {}'.format(command))
+        log.info(
+            subprocess.check_output(command.split(), stderr=subprocess.STDOUT).decode())
+        log.info('Downloaded: {}'.format(package_name))
+
+
+def run_cli():
+    """
+    Run as cli tool
+    """
+    parser = argparse.ArgumentParser(description='Download git repositories from list')
+    parser.add_argument('pypi_list', metavar='pypi-list',
+                        help='File with list of pypi packages to download.')
+    parser.add_argument('--output-dir', '-o', default=os.getcwd(),
+                        help='Download destination')
+
+    args = parser.parse_args()
+
+    logging.basicConfig(stream=sys.stdout, level=logging.INFO, format='%(message)s')
+
+    downloader = PyPiDownloader([args.pypi_list, args.output_dir])
+
+    timer_start = timeit.default_timer()
+    try:
+        downloader.download()
+    except RuntimeError as err:
+        log.exception(err)
+        sys.exit(1)
+    finally:
+        log.info('Downloading finished in {}'.format(
+            datetime.timedelta(seconds=timeit.default_timer() - timer_start)))
+
+
+if __name__ == '__main__':
+    run_cli()