# HG changeset patch
# User Marcin Kuzminski <marcin@rhodecode.com>
# Date 2016-11-17 19:00:16
# Node ID ed2556a891b7b0bde66d31bd74d575f92c9e264a
# Parent  e9e0b5e314a766b841bb61890c72c39462f5a4c0

backends: don't detect backends when initializing db based vcs-instance.
This skips some calls back to vcsserver.

diff --git a/rhodecode/lib/vcs/backends/__init__.py b/rhodecode/lib/vcs/backends/__init__.py
--- a/rhodecode/lib/vcs/backends/__init__.py
+++ b/rhodecode/lib/vcs/backends/__init__.py
@@ -22,6 +22,7 @@
 VCS Backends module
 """
 
+import os
 import logging
 
 from pprint import pformat
@@ -42,11 +43,18 @@ def get_vcs_instance(repo_path, *args, *
     for the path it returns None. Arguments and keyword arguments are passed
     to the vcs backend repository class.
     """
+    explicit_vcs_alias = kwargs.pop('_vcs_alias', None)
     try:
-        vcs_alias = get_scm(repo_path)[0]
+        vcs_alias = explicit_vcs_alias or get_scm(repo_path)[0]
         log.debug(
             'Creating instance of %s repository from %s', vcs_alias, repo_path)
         backend = get_backend(vcs_alias)
+
+        if explicit_vcs_alias:
+            # do final verification of existance of the path, this does the
+            # same as get_scm() call which we skip in explicit_vcs_alias
+            if not os.path.isdir(repo_path):
+                raise VCSError("Given path %s is not a directory" % repo_path)
     except VCSError:
         log.exception(
             'Perhaps this repository is in db and not in '
diff --git a/rhodecode/model/db.py b/rhodecode/model/db.py
--- a/rhodecode/model/db.py
+++ b/rhodecode/model/db.py
@@ -1987,12 +1987,12 @@ class Repository(Base, BaseModel):
         custom_wire = {
             'cache': cache  # controls the vcs.remote cache
         }
-
         repo = get_vcs_instance(
             repo_path=safe_str(self.repo_full_path),
             config=config,
             with_wire=custom_wire,
-            create=False)
+            create=False,
+            _vcs_alias=self.repo_type)
 
         return repo