Add per schema permissions. (#1698)

* Add per schema permissions.

* Address comments.

* Add schema_access perms to the alpha and admin

* Create permissions on addition databases and datasources.

* Remove hybrid_property. Linter complains.

superset/models.py

@@ -907,6 +907,11 @@ def link(self):
         return Markup(
             '<a href="{self.explore_url}">{table_name}</a>'.format(**locals()))
 
+    @property
+    def schema_perm(self):
+        """Returns schema permission if present, database one otherwise."""
+        return utils.get_schema_perm(self.database, self.schema)
+
     def get_perm(self):
         return (
             "[{obj.database}].[{obj.table_name}]"
@@ -1625,6 +1630,19 @@ def num_cols(self):
     def name(self):
         return self.datasource_name
 
+    @property
+    def schema(self):
+        name_pieces = self.datasource_name.split('.')
+        if len(name_pieces) > 1:
+            return name_pieces[0]
+        else:
+            return None
+
+    @property
+    def schema_perm(self):
+        """Returns schema permission if present, cluster one otherwise."""
+        return utils.get_schema_perm(self.cluster, self.schema)
+
     def get_perm(self):
         return (
             "[{obj.cluster_name}].[{obj.datasource_name}]"

superset/security.py

@@ -30,6 +30,7 @@
 ADMIN_ONLY_PERMISSIONS = {
     'all_database_access',
     'datasource_access',
+    'schema_access',
     'database_access',
     'can_sql_json',
     'can_override_role_permissions',
@@ -50,6 +51,7 @@
     'can_edit',
     'can_save',
     'datasource_access',
+    'schema_access',
     'database_access',
     'muldelete',
     'all_datasource_access',
@@ -59,6 +61,7 @@
 
 OBJECT_SPEC_PERMISSIONS = set([
     'database_access',
+    'schema_access',
     'datasource_access',
     'metric_access',
 ])
@@ -186,6 +189,9 @@ def sync_role_definitions():
     for datasource in datasources:
         perm = datasource.get_perm()
         sm.add_permission_view_menu('datasource_access', perm)
+        if datasource.schema:
+            sm.add_permission_view_menu(
+                'schema_access', datasource.schema_perm)
         if perm != datasource.perm:
             datasource.perm = perm
 

superset/utils.py

@@ -330,6 +330,12 @@ def get_datasource_full_name(database_name, datasource_name, schema=None):
     return "[{}].[{}].[{}]".format(database_name, schema, datasource_name)
 
 
+def get_schema_perm(database, schema):
+    if schema:
+        return "[{}].[{}]".format(database, schema)
+    return database.perm
+
+
 def validate_json(obj):
     if obj:
         try:

superset/views.py

@@ -61,10 +61,16 @@ def database_access(self, database):
             self.can_access("database_access", database.perm)
         )
 
-    def datasource_access(self, datasource):
+    def schema_access(self, datasource):
         return (
             self.database_access(datasource.database) or
             self.all_datasource_access() or
+            self.can_access("schema_access", datasource.schema_perm)
+        )
+
+    def datasource_access(self, datasource):
+        return (
+            self.schema_access(datasource) or
             self.can_access("datasource_access", datasource.perm)
         )
 
@@ -575,6 +581,9 @@ class DatabaseView(SupersetModelView, DeleteMixin):  # noqa
     def pre_add(self, db):
         db.set_sqlalchemy_uri(db.sqlalchemy_uri)
         security.merge_perm(sm, 'database_access', db.perm)
+        for schema in db.all_schema_names():
+            security.merge_perm(
+                sm, 'schema_access', utils.get_schema_perm(db, schema))
 
     def pre_update(self, db):
         self.pre_add(db)
@@ -685,6 +694,9 @@ def pre_add(self, table):
     def post_add(self, table):
         table.fetch_metadata()
         security.merge_perm(sm, 'datasource_access', table.perm)
+        if table.schema:
+            security.merge_perm(sm, 'schema_access', table.schema_perm)
+
         flash(_(
             "The table was created. As part of this two phase configuration "
             "process, you should now click the edit button by "
@@ -1049,6 +1061,8 @@ def pre_add(self, datasource):
     def post_add(self, datasource):
         datasource.generate_metrics()
         security.merge_perm(sm, 'datasource_access', datasource.perm)
+        if datasource.schema:
+            security.merge_perm(sm, 'schema_access', datasource.schema_perm)
 
     def post_update(self, datasource):
         self.post_add(datasource)