# HG changeset patch
# User Marcin Kuzminski <marcin@rhodecode.com>
# Date 2019-07-22 14:08:09
# Node ID 343888016f9ec4a03929311fe1a0e7e7347f1b62
# Parent  9b226112f6c124e54f24fc595027866759b884ee

vcs: use single base for shared functions of Remote objects

diff --git a/vcsserver/git.py b/vcsserver/git.py
--- a/vcsserver/git.py
+++ b/vcsserver/git.py
@@ -44,6 +44,7 @@ from vcsserver.base import RepoFactory, 
 from vcsserver.hgcompat import (
     hg_url as url_parser, httpbasicauthhandler, httpdigestauthhandler)
 from vcsserver.git_lfs.lib import LFSOidStore
+from vcsserver.vcs_base import RemoteBase
 
 DIR_STAT = stat.S_IFDIR
 FILE_MODE = stat.S_IFMT
@@ -127,8 +128,7 @@ class GitFactory(RepoFactory):
         return self.repo(wire, use_libgit2=True)
 
 
-class GitRemote(object):
-    EMPTY_COMMIT = '0' * 40
+class GitRemote(RemoteBase):
 
     def __init__(self, factory):
         self._factory = factory
@@ -156,14 +156,6 @@ class GitRemote(object):
             params.extend(['-c', 'http.sslCAinfo={}'.format(ssl_cert_dir)])
         return params
 
-    def _cache_on(self, wire):
-        context = wire.get('context', '')
-        context_uid = '{}'.format(context)
-        repo_id = wire.get('repo_id', '')
-        cache = wire.get('cache', True)
-        cache_on = context and cache
-        return cache_on, context_uid, repo_id
-
     @reraise_safe_exceptions
     def discover_git_version(self):
         stdout, _ = self.run_git_command(
@@ -404,7 +396,6 @@ class GitRemote(object):
     @reraise_safe_exceptions
     def branch(self, wire, commit_id):
         cache_on, context_uid, repo_id = self._cache_on(wire)
-        cache_on = False
         @self.region.conditional_cache_on_arguments(condition=cache_on)
         def _branch(_context_uid, _repo_id, _commit_id):
             regex = re.compile('^refs/heads')
diff --git a/vcsserver/hg.py b/vcsserver/hg.py
--- a/vcsserver/hg.py
+++ b/vcsserver/hg.py
@@ -37,6 +37,7 @@ from vcsserver.hgcompat import (
     makepeer, instance, match, memctx, exchange, memfilectx, nullrev, hg_merge,
     patch, peer, revrange, ui, hg_tag, Abort, LookupError, RepoError,
     RepoLookupError, InterventionRequired, RequirementError)
+from vcsserver.vcs_base import RemoteBase
 
 log = logging.getLogger(__name__)
 
@@ -150,7 +151,7 @@ class MercurialFactory(RepoFactory):
         return self._create_repo(wire, create)
 
 
-class HgRemote(object):
+class HgRemote(RemoteBase):
 
     def __init__(self, factory):
         self._factory = factory
@@ -173,14 +174,6 @@ class HgRemote(object):
     def _get_ctx(self, repo, ref):
         return get_ctx(repo, ref)
 
-    def _cache_on(self, wire):
-        context = wire.get('context', '')
-        context_uid = '{}'.format(context)
-        repo_id = wire.get('repo_id', '')
-        cache = wire.get('cache', True)
-        cache_on = context and cache
-        return cache_on, context_uid, repo_id
-
     @reraise_safe_exceptions
     def discover_hg_version(self):
         from mercurial import util
diff --git a/vcsserver/svn.py b/vcsserver/svn.py
--- a/vcsserver/svn.py
+++ b/vcsserver/svn.py
@@ -36,6 +36,7 @@ import svn.repos
 
 from vcsserver import svn_diff, exceptions, subprocessio, settings
 from vcsserver.base import RepoFactory, raise_from_original
+from vcsserver.vcs_base import RemoteBase
 
 log = logging.getLogger(__name__)
 
@@ -107,7 +108,7 @@ NODE_TYPE_MAPPING = {
 }
 
 
-class SvnRemote(object):
+class SvnRemote(RemoteBase):
 
     def __init__(self, factory, hg_factory=None):
         self._factory = factory
@@ -116,14 +117,6 @@ class SvnRemote(object):
         self._hg_factory = hg_factory
         self.region = self._factory._cache_region
 
-    def _cache_on(self, wire):
-        context = wire.get('context', '')
-        context_uid = '{}'.format(context)
-        repo_id = wire.get('repo_id', '')
-        cache = wire.get('cache', True)
-        cache_on = context and cache
-        return cache_on, context_uid, repo_id
-
     @reraise_safe_exceptions
     def discover_svn_version(self):
         try:
diff --git a/vcsserver/vcs_base.py b/vcsserver/vcs_base.py
new file mode 100644
--- /dev/null
+++ b/vcsserver/vcs_base.py
@@ -0,0 +1,28 @@
+# RhodeCode VCSServer provides access to different vcs backends via network.
+# Copyright (C) 2014-2019 RhodeCode GmbH
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software Foundation,
+# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+
+
+class RemoteBase(object):
+    EMPTY_COMMIT = '0' * 40
+
+    def _cache_on(self, wire):
+        context = wire.get('context', '')
+        context_uid = '{}'.format(context)
+        repo_id = wire.get('repo_id', '')
+        cache = wire.get('cache', True)
+        cache_on = context and cache
+        return cache_on, context_uid, repo_id