Consistently get CWD across apps and arbiter.

The Arbiter is smart about getting the CWD; first it checks the CWD
environment (which doesn't resolve symlinks), then it falls back to the
python os.getcwd() (which does resolve symlinks). However, the Arbiter
is the only place that does this, which will then do the right thing
when we reexec. However, when reloading the Arbiter, it won't pick up
changes if the symlink has changed.

By changing the *app.py entry points to also use the same method for
determining the CWD, we'll insert a symlink path into the first location
in sys.path. Then our reloaded app will correctly pull in any new
changes.

gunicorn/app/djangoapp.py

@@ -55,7 +55,8 @@ def make_default_env(cfg):
         os.environ['DJANGO_SETTINGS_MODULE']
     except KeyError:
         # not settings env set, try to build one.
-        project_path, settings_name = find_settings_module(os.getcwd())
+        cwd = util.getcwd()
+        project_path, settings_name = find_settings_module(cwd)
 
         if not project_path:
             raise RuntimeError("django project not found")

gunicorn/app/pasterapp.py

@@ -17,6 +17,7 @@ SERVER = loadwsgi.SERVER
 
 from gunicorn.app.base import Application
 from gunicorn.config import Config
+from gunicorn import util
 
 
 class PasterBaseApplication(Application):
@@ -68,7 +69,8 @@ class PasterApplication(PasterBaseApplication):
         if len(args) != 1:
             parser.error("No application name specified.")
 
-        cfgfname = os.path.normpath(os.path.join(os.getcwd(), args[0]))
+        cwd = util.getcwd()
+        cfgfname = os.path.normpath(os.path.join(cwd, args[0]))
         cfgfname = os.path.abspath(cfgfname)
         if not os.path.exists(cfgfname):
             parser.error("Config file not found: %s" % cfgfname)

gunicorn/app/wsgiapp.py

@@ -19,7 +19,9 @@ class WSGIApplication(Application):
         self.cfg.set("default_proc_name", args[0])
         self.app_uri = args[0]
 
-        sys.path.insert(0, os.getcwd())
+        cwd = util.getcwd()
+
+        sys.path.insert(0, cwd)
 
     def load(self):
         return util.import_app(self.app_uri)

gunicorn/arbiter.py

@@ -59,16 +59,7 @@ class Arbiter(object):
         self.reexec_pid = 0
         self.master_name = "Master"
 
-        # get current path, try to use PWD env first
-        try:
-            a = os.stat(os.environ['PWD'])
-            b = os.stat(os.getcwd())
-            if a.st_ino == b.st_ino and a.st_dev == b.st_dev:
-                cwd = os.environ['PWD']
-            else:
-                cwd = os.getcwd()
-        except:
-            cwd = os.getcwd()
+        cwd = util.getcwd()
 
         args = sys.argv[:]
         args.insert(0, sys.executable)

gunicorn/util.py

@@ -364,6 +364,20 @@ def import_app(module):
     return app
 
 
+def getcwd():
+    # get current path, try to use PWD env first
+    try:
+        a = os.stat(os.environ['PWD'])
+        b = os.stat(os.getcwd())
+        if a.st_ino == b.st_ino and a.st_dev == b.st_dev:
+            cwd = os.environ['PWD']
+        else:
+            cwd = os.getcwd()
+    except:
+        cwd = os.getcwd()
+    return cwd
+
+
 def http_date(timestamp=None):
     """Return the current date and time formatted for a message header."""
     if timestamp is None: