Merge pull request #95 from shanosborne/version_checking

Add check upon import for JWST PRD version

pysiaf/__init__.py

@@ -4,6 +4,9 @@
 
 from __future__ import absolute_import, print_function, division
 
+import re
+import requests
+
 from .version import *
 
 from .aperture import Aperture, HstAperture, JwstAperture
@@ -14,4 +17,20 @@
 # from .tests import test_aperture#, test_polynomial
 from .utils import polynomial, rotations, tools, projection
 
-__all__ = ['Aperture', 'HstAperture', 'JwstAperture', 'SIAF', 'JWST_PRD_VERSION', 'JWST_PRD_DATA_ROOT', 'HST_PRD_VERSION', 'HST_PRD_DATA_ROOT', '_JWST_STAGING_ROOT', 'siaf', 'iando', 'polynomial', 'rotations', 'tools', 'compare', 'JWST_PRD_DATA_ROOT_EXCEL', 'generate', 'projection']
+__all__ = ['Aperture', 'HstAperture', 'JwstAperture', 'SIAF', 'JWST_PRD_VERSION', 'JWST_PRD_DATA_ROOT', 'HST_PRD_VERSION', 'HST_PRD_DATA_ROOT', '_JWST_STAGING_ROOT', 'siaf', 'iando', 'polynomial', 'rotations', 'tools', 'compare', 'JWST_PRD_DATA_ROOT_EXCEL', 'generate', 'projection']
+
+# Check PRD version is up to date
+try:
+    req = requests.get('https://github.com/spacetelescope/pysiaf/tree/master/pysiaf/prd_data/JWST').text
+    p = re.compile("/spacetelescope/pysiaf/tree/master/pysiaf/prd_data/JWST/(.*?)/SIAFXML")
+    prd_list = p.findall(req)
+    newest_prd = [x for x in sorted(prd_list, reverse=True)][0]
+
+    if JWST_PRD_VERSION != newest_prd:
+        print("**WARNING**: LOCAL JWST PRD VERSION {} IS BEHIND THE CURRENT ONLINE VERSION {}\nPlease "
+              "consider updating pysiaf, e.g. pip install --upgrade pysiaf or conda update pysiaf".format(
+              JWST_PRD_VERSION, newest_prd))
+except requests.exceptions.ConnectionError:
+    print("**WARNING**: NO INTERNET CONNECTION\nLOCAL JWST PRD VERSION {} CANNOT BE CHECKED AGAINST "
+          "ONLINE VERSION".format(JWST_PRD_VERSION))
+    pass