Use a UNION query instead of a multitude of left outer joins for performance reasons.

Fixes #159

data/model/legacy.py

@@ -1156,18 +1156,27 @@ def update_email(user, new_email, auto_verify=False):
 def get_all_user_permissions(user):
   UserThroughTeam = User.alias()
 
-  return (RepositoryPermission
-          .select(RepositoryPermission, Role, Repository, Namespace)
-          .join(Role)
-          .switch(RepositoryPermission)
-          .join(Repository)
-          .join(Namespace, on=(Repository.namespace_user == Namespace.id))
-          .switch(RepositoryPermission)
-          .join(User, JOIN_LEFT_OUTER)
-          .switch(RepositoryPermission)
-          .join(Team, JOIN_LEFT_OUTER).join(TeamMember, JOIN_LEFT_OUTER)
-          .join(UserThroughTeam, JOIN_LEFT_OUTER, on=(UserThroughTeam.id == TeamMember.user))
-          .where((User.id == user) | (UserThroughTeam.id == user)))
+  base_query = (RepositoryPermission
+                .select(RepositoryPermission, Role, Repository, Namespace)
+                .join(Role)
+                .switch(RepositoryPermission)
+                .join(Repository)
+                .join(Namespace, on=(Repository.namespace_user == Namespace.id))
+                .switch(RepositoryPermission))
+
+  direct = (base_query
+            .clone()
+            .join(User)
+            .where(User.id == user))
+
+  team = (base_query
+          .clone()
+          .join(Team)
+          .join(TeamMember)
+          .join(UserThroughTeam, on=(UserThroughTeam.id == TeamMember.user))
+          .where(UserThroughTeam.id == user))
+
+  return direct | team
 
 
 def delete_prototype_permission(org, uid):
@@ -1232,7 +1241,7 @@ def get_org_wide_permissions(user):
 
 
 def get_all_repo_teams(namespace_name, repository_name):
-  return (RepositoryPermission.select(Team.name.alias('team_name'), Role.name, RepositoryPermission)
+  return (RepositoryPermission.select(Team.name, Role.name, RepositoryPermission)
           .join(Team)
           .switch(RepositoryPermission)
           .join(Role)

requirements-nover.txt

@@ -1,7 +1,6 @@
 autobahn==0.9.3-3
 aiowsgi
 trollius
-peewee
 flask
 py-bcrypt
 Flask-Principal
@@ -40,6 +39,7 @@ git+https://github.com/DevTable/anunidecode.git
 git+https://github.com/DevTable/pygithub.git
 git+https://github.com/DevTable/container-cloud-config.git
 git+https://github.com/DevTable/python-etcd.git@sslfix
+git+https://github.com/coreos/peewee.git
 git+https://github.com/coreos/py-bitbucket.git
 git+https://github.com/coreos/pyapi-gitlab.git
 git+https://github.com/coreos/mockldap.git

requirements.txt

@@ -56,7 +56,6 @@ oslo.serialization==1.5.0
 oslo.utils==1.5.0
 paramiko==1.15.2
 pbr==0.11.0
-peewee==2.6.0
 prettytable==0.7.2
 psutil==2.2.1
 psycopg2==2.6
@@ -95,6 +94,7 @@ git+https://github.com/DevTable/pygithub.git
 git+https://github.com/DevTable/container-cloud-config.git
 git+https://github.com/DevTable/python-etcd.git@sslfix
 git+https://github.com/NateFerrero/oauth2lib.git
+git+https://github.com/coreos/peewee.git
 git+https://github.com/coreos/py-bitbucket.git
 git+https://github.com/coreos/pyapi-gitlab.git
 git+https://github.com/coreos/mockldap.git