add the --paste option and deprecate gunicorn_paster

Instead of having multiple command line just use the gunicorn one.
gunicorn_django is deprecated as well.

gunicorn/app/pasterapp.py

@@ -20,36 +20,49 @@ from gunicorn.config import Config, get_default_config_file
 from gunicorn import util
 
 
+def paste_config(gconfig, config_url, relative_to, global_conf=None):
+    # add entry to pkg_resources
+    sys.path.insert(0, relative_to)
+    pkg_resources.working_set.add_entry(relative_to)
+
+    cx = loadwsgi.loadcontext(SERVER, config_url, relative_to=relative_to,
+            global_conf=global_conf)
+    gc, lc = cx.global_conf.copy(), cx.local_conf.copy()
+    cfg = {}
+
+    host, port = lc.pop('host', ''), lc.pop('port', '')
+    if host and port:
+        cfg['bind'] = '%s:%s' % (host, port)
+    elif host:
+        cfg['bind'] = host.split(',')
+
+    cfg['workers'] = int(lc.get('workers', 1))
+    cfg['umask'] = int(lc.get('umask', 0))
+    cfg['default_proc_name'] = gc.get('__file__')
+
+    for k, v in gc.items():
+        if k not in gconfig.settings:
+            continue
+        cfg[k] = v
+
+    for k, v in lc.items():
+        if k not in gconfig.settings:
+            continue
+        cfg[k] = v
+
+    return cfg
+
+
+def load_pasteapp(config_url, relative_to, global_conf=None):
+    return loadapp(config_url, relative_to=relative_to,
+            global_conf=global_conf)
+
 class PasterBaseApplication(Application):
     gcfg = None
 
     def app_config(self):
-        cx = loadwsgi.loadcontext(SERVER, self.cfgurl,
-                relative_to=self.relpath, global_conf=self.gcfg)
-        gc, lc = cx.global_conf.copy(), cx.local_conf.copy()
-        cfg = {}
-
-        host, port = lc.pop('host', ''), lc.pop('port', '')
-        if host and port:
-            cfg['bind'] = '%s:%s' % (host, port)
-        elif host:
-            cfg['bind'] = host.split(',')
-
-        cfg['workers'] = int(lc.get('workers', 1))
-        cfg['umask'] = int(lc.get('umask', 0))
-        cfg['default_proc_name'] = gc.get('__file__')
-
-        for k, v in gc.items():
-            if k not in self.cfg.settings:
-                continue
-            cfg[k] = v
-
-        for k, v in lc.items():
-            if k not in self.cfg.settings:
-                continue
-            cfg[k] = v
-
-        return cfg
+        return paste_config(self.cfg, self.cfgurl, self.relpath,
+                global_conf=self.gcfg)
 
     def load_config(self):
         super(PasterBaseApplication, self).load_config()
@@ -91,7 +104,7 @@ class PasterApplication(PasterBaseApplication):
         # default is the current dir
         os.chdir(self.cfg.chdir)
 
-        return loadapp(self.cfgurl, relative_to=self.relpath, global_conf=self.gcfg)
+        return load_pasteapp(self.cfgurl, self.relpath, global_conf=self.gcfg)
 
 
 class PasterServerApplication(PasterBaseApplication):
@@ -151,6 +164,13 @@ def run():
     The ``gunicorn_paster`` command for launcing Paster compatible
     apllications like Pylons or Turbogears2
     """
+    util.warn("""This command is deprecated.
+
+    You should now use the `--paste` option. Ex.:
+
+        gunicorn --paste development.ini
+    """)
+
     from gunicorn.app.pasterapp import PasterApplication
     PasterApplication("%(prog)s [OPTIONS] pasteconfig.ini").run()
 

gunicorn/app/wsgiapp.py

@@ -6,21 +6,35 @@
 import os
 import sys
 
-from gunicorn import util
+from gunicorn.errors import ConfigError
 from gunicorn.app.base import Application
 from gunicorn.app import djangoapp
+from gunicorn import util
 
 
 class WSGIApplication(Application):
-
     def init(self, parser, opts, args):
+        if opts.paste and opts.paste is not None:
+            path = os.path.abspath(os.path.normpath(
+                os.path.join(util.getcwd(), opts.paste)))
+
+            if not os.path.exists(path):
+                raise ConfigError("%r not found" % val)
+
+            # paste application, load the config
+            self.cfgurl = 'config:%s' % path
+            self.relpath = os.path.dirname(path)
+
+            from .pasterapp import paste_config
+            return paste_config(self.cfg, self.cfgurl, self.relpath)
+
         if len(args) != 1:
             parser.error("No application module specified.")
 
         self.cfg.set("default_proc_name", args[0])
         self.app_uri = args[0]
 
-    def load(self):
+    def chdir(self):
         # chdir to the configured path before loading,
         # default is the current dir
         os.chdir(self.cfg.chdir)
@@ -28,17 +42,33 @@ class WSGIApplication(Application):
         # add the path to sys.path
         sys.path.insert(0, self.cfg.chdir)
 
+    def load_wsgiapp(self):
+        self.chdir()
+
         # load the app
         return util.import_app(self.app_uri)
 
+    def load_pasteapp(self):
+        self.chdir()
+
+        # load the paste app
+        from .pasterapp import load_pasteapp
+        return load_pasteapp(self.cfgurl, self.relpath, global_conf=None)
+
+    def load(self):
+        if self.cfg.paste is not None:
+            return self.load_pasteapp()
+        else:
+            return self.load_wsgiapp
+
 
 def run():
     """\
-    The ``gunicorn`` command line runner for launching Gunicorn with
+    The ``gunicorn`` command line runner for launching Ghunicorn with
     generic WSGI applications.
     """
     from gunicorn.app.wsgiapp import WSGIApplication
-    WSGIApplication("%(prog)s [OPTIONS] APP_MODULE").run()
+    WSGIApplication("%(prog)s [OPTIONS] [APP_MODULE]").run()
 
 
 if __name__ == '__main__':

gunicorn/config.py

@@ -401,6 +401,24 @@ def validate_chdir(val):
 
     return path
 
+
+def validate_file(val):
+    if val is None:
+        return None
+
+    # valid if the value is a string
+    val = validate_string(val)
+
+     # transform relative paths
+    path = os.path.abspath(os.path.normpath(os.path.join(util.getcwd(), val)))
+
+    # test if the path exists
+    if not os.path.exists(path):
+        raise ConfigError("%r not found" % val)
+
+    return path
+
+
 def get_default_config_file():
     config_path = os.path.join(os.path.abspath(os.getcwd()),
             'gunicorn.conf.py')
@@ -1128,10 +1146,12 @@ class DjangoSettings(Setting):
     validator = validate_string
     default = None
     desc = """\
-        The Python path to a Django settings module.
+        The Python path to a Django settings module. (deprecated)
 
         e.g. 'myproject.settings.main'. If this isn't provided, the
         DJANGO_SETTINGS_MODULE environment variable will be used.
+
+        **DEPRECATED**: use the --env argument instead.
         """
 
 
@@ -1143,13 +1163,25 @@ class PythonPath(Setting):
     validator = validate_string
     default = None
     desc = """\
-        A directory to add to the Python path for Django.
+        A directory to add to the Python path.
 
         e.g.
         '/home/djangoprojects/myproject'.
         """
 
 
+class Paste(Setting):
+    name = "paste"
+    section = "Server Mechanics"
+    cli = ["--paster"]
+    meta = "STRING"
+    validator = validate_string
+    default = None
+    desc = """\
+        Load a paste.deploy config file.
+        """
+
+
 class OnStarting(Setting):
     name = "on_starting"
     section = "Server Hooks"