common.py 1.8 KB

1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950
  1. #!/usr/bin/env python
  2. # Licensed to Cloudera, Inc. under one
  3. # or more contributor license agreements. See the NOTICE file
  4. # distributed with this work for additional information
  5. # regarding copyright ownership. Cloudera, Inc. licenses this file
  6. # to you under the Apache License, Version 2.0 (the
  7. # "License"); you may not use this file except in compliance
  8. # with the License. You may obtain a copy of the License at
  9. #
  10. # http://www.apache.org/licenses/LICENSE-2.0
  11. #
  12. # Unless required by applicable law or agreed to in writing, software
  13. # distributed under the License is distributed on an "AS IS" BASIS,
  14. # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  15. # See the License for the specific language governing permissions and
  16. # limitations under the License.
  17. import glob
  18. import logging
  19. import os.path
  20. # The root of the Hue installation
  21. INSTALL_ROOT = os.path.realpath(os.path.join(os.path.dirname(__file__), '..', '..'))
  22. # The Hue config directory
  23. HUE_CONF_DIR = os.path.join(INSTALL_ROOT, 'desktop', 'conf')
  24. # Virtual env
  25. VIRTUAL_ENV = os.path.join(INSTALL_ROOT, 'build', 'env')
  26. # The Python executable in virtualenv
  27. ENV_PYTHON = os.path.join(VIRTUAL_ENV, 'bin', 'python')
  28. def cmp_version(ver1, ver2):
  29. """Compare two version strings in the form of 1.2.34"""
  30. return cmp(ver1.split('.'), ver2.split('.'))
  31. def _get_python_lib_dir():
  32. glob_path = os.path.join(VIRTUAL_ENV, 'lib', 'python*')
  33. res = glob.glob(glob_path)
  34. if len(res) == 0:
  35. raise SystemError("Cannot find a Python installation in %s. "
  36. "Did you do `make hue'?" % glob_path)
  37. elif len(res) > 1:
  38. raise SystemError("Found multiple Python installations in %s. "
  39. "Please `make clean' first." % glob_path)
  40. return res[0]
  41. def _get_python_site_packages_dir():
  42. return os.path.join(_get_python_lib_dir(), 'site-packages')