grid: detect platform for binary cache support under cygwin

slapos/cli/cache.py

@@ -10,7 +10,7 @@ import sys
 import prettytable
 
 from slapos.grid import networkcache
-from slapos.grid.distribution import patched_linux_distribution
+from slapos.grid.distribution import distribution_tuple
 from slapos.cli.config import ConfigCommand
 
 
@@ -76,7 +76,7 @@ def do_lookup(logger, cache_dir, software_url):
 
     pt = prettytable.PrettyTable(['distribution', 'version', 'id', 'compatible?'])
 
-    linux_distribution = patched_linux_distribution()
+    linux_distribution = distribution_tuple()
 
     for os in ostable:
         compatible = 'yes' if networkcache.os_matches(os, linux_distribution) else 'no'

slapos/grid/distribution.py

@@ -13,6 +13,9 @@ patched_linux_distribution(...):
         see http://bugs.python.org/issue9514
 
     otherwise, Ubuntu will always be reported as an unstable Debian, regardless of the version.
+
+distribution_tuple()
+    returns a (distname, version, id) tuple under linux or cygwin
 """
 
 import platform
@@ -62,3 +65,10 @@ def patched_linux_distribution(distname='', version='', id='',
             pass
 
     return platform.linux_distribution(distname, version, id, supported_dists, full_distribution_name)
+
+
+def distribution_tuple():
+    if platform.system().startswith('CYGWIN_'):
+        return (platform.system(), platform.platform(), '')
+    else:
+        return patched_linux_distribution()

slapos/grid/networkcache.py

@@ -18,7 +18,7 @@ import platform
 import shutil
 import traceback
 
-from slapos.grid.distribution import os_matches, patched_linux_distribution
+from slapos.grid.distribution import os_matches, distribution_tuple
 
 try:
     try:
@@ -88,7 +88,7 @@ def download_network_cached(cache_url, dir_url, software_url, software_root,
                 if tags.get('machine') != platform.machine():
                     continue
                 if not os_matches(ast.literal_eval(tags.get('os')),
-                                  patched_linux_distribution()):
+                                  distribution_tuple()):
                     continue
                 if tags.get('software_url') != software_url:
                     continue
@@ -134,7 +134,7 @@ def upload_network_cached(software_root, software_url, cached_key,
       software_url=software_url,
       software_root=software_root,
       machine=platform.machine(),
-      os=str(patched_linux_distribution())
+      os=str(distribution_tuple())
     )
 
     f = open(path, 'r')