Docserver overhaul: Gitiles away from me.

chrome/common/extensions/docs/server2/environment.py

Index: chrome/common/extensions/docs/server2/environment.py
diff --git a/chrome/common/extensions/docs/server2/environment.py b/chrome/common/extensions/docs/server2/environment.py
index 4c8ae583f799fbdf4004dccad6ef32a9f93b4bc4..85e1828d622105956b32ad98dd4f8b0f3d0b566e 100644
--- a/chrome/common/extensions/docs/server2/environment.py
+++ b/chrome/common/extensions/docs/server2/environment.py
@@ -31,6 +31,10 @@ def _IsServerSoftware(name):
   return os.environ.get('SERVER_SOFTWARE', '').find(name) == 0
 
 
+def IsComputeEngine():
+  return _IsServerSoftware('Compute Engine')

[Ken Rockot(use gerrit already), 2015/05/26 00:26:24]

Not a real thing, but there were no obvious environment variables I could glean
to ask the question synchronously and quickly. So we manually set
SERVER_SOFTWARE='Compute Engine' on the instance in order to make this work.

+
+
 def IsDevServer():
   return _IsServerSoftware('Development')
 
@@ -41,3 +45,16 @@ def IsReleaseServer():
 
 def IsPreviewServer():
   return sys.argv and os.path.basename(sys.argv[0]) == 'preview.py'
+
+
+def IsAppEngine():
+  return IsDevServer() or IsReleaseServer()
+
+
+def IsTest():
+  return sys.argv and os.path.basename(sys.argv[0]).endswith('_test.py')

[Ken Rockot(use gerrit already), 2015/05/26 00:26:24]

Added this because it's no longer true that !IsAppEngine() == (IsTest() ||
IsPreview())

+
+
+class UnknownEnvironmentError(Exception):
+  pass
+