Enable syncing proxymodules from the master. Proxymodules can go in /srv/salt/_proxy.

salt/loader.py

@@ -260,7 +260,6 @@ def proxy(opts, functions=None, returners=None, whitelist=None):
     '''
     Returns the proxy module for this salt-proxy-minion
     '''
-    # This is where we should set directories so proxy modules can be loaded from /srv/<something>
     ret = LazyLoader(_module_dirs(opts, 'proxy', 'proxy'),
                      opts,
                      tag='proxy',

salt/minion.py

@@ -2491,6 +2491,7 @@ class ProxyMinion(Minion):
         to know which master they connected to)
         '''
         log.debug("subclassed _post_master_init")
+
         self.opts['master'] = master
 
         self.opts['pillar'] = yield salt.pillar.get_async_pillar(
@@ -2510,7 +2511,16 @@ class ProxyMinion(Minion):
         fq_proxyname = self.opts['pillar']['proxy']['proxytype']
         self.opts['proxy'] = self.opts['pillar']['proxy']
 
+        # Need to load the modules so they get all the dunder variables
+        self.functions, self.returners, self.function_errors = self._load_modules()
+
+        # we can then sync any proxymodules down from the master
+        self.functions['saltutil.sync_proxymodules'](saltenv='base')
+
+        # Then load the proxy module
         self.proxy = salt.loader.proxy(self.opts)
+
+        # And re-load the modules so the __proxy__ variable gets injected
         self.functions, self.returners, self.function_errors = self._load_modules(proxy=self.proxy)
         self.functions.pack['__proxy__'] = self.proxy
         self.proxy.pack['__salt__'] = self.functions

salt/modules/saltutil.py

@@ -390,6 +390,25 @@ def sync_returners(saltenv=None, refresh=True):
     return ret
 
 
+def sync_proxymodules(saltenv=None, refresh=False):
+    '''
+    Sync the proxy modules from the _proxy directory on the salt master file
+    server. This function is environment aware, pass the desired environment
+    to grab the contents of the _returners directory, base is the default
+    environment.
+
+    CLI Example:
+
+    .. code-block:: bash
+
+        salt '*' saltutil.sync_proxymodules
+    '''
+    ret = _sync('proxy', saltenv)
+    if refresh:
+        refresh_modules()
+    return ret
+
+
 def sync_output(saltenv=None, refresh=True):
     '''
     Sync the output modules from the _output directory on the salt master file