feat: remove storage path in open/create request (#92)

* feat: remove storage path in open/create request

Signed-off-by: Ruihang Xia <waynestxia@gmail.com>

* generate code

Signed-off-by: Ruihang Xia <waynestxia@gmail.com>

* sync changes

Signed-off-by: Ruihang Xia <waynestxia@gmail.com>

---------

Signed-off-by: Ruihang Xia <waynestxia@gmail.com>

proto/greptime/v1/region/server.proto

@@ -79,15 +79,17 @@ message CreateRequest {
   string engine = 2;
   // Columns in this region.
   repeated ColumnDef column_defs = 3;
-  // Id of columns in the primary key.
+  // Column Id of primary keys.
   repeated uint32 primary_key = 4;
   // Create region if not exists.
   bool create_if_not_exists = 5;
-  // Directory for region's data home. Usually is composed by catalog and table
-  // id
-  string region_dir = 6;
+  // catalog name and schema name is to accomplish storage path
+  // catalog name
+  string catalog = 6;
+  // schema name
+  string schema = 7;
   // Options of the created region.
-  map<string, string> options = 7;
+  map<string, string> options = 8;
   // TODO: add partition def
 }
 
@@ -97,10 +99,13 @@ message OpenRequest {
   uint64 region_id = 1;
   // Region engine name
   string engine = 2;
-  // Data directory of the region.
-  string region_dir = 3;
+  // catalog name and schema name is to accomplish storage path
+  // catalog name
+  string catalog = 3;
+  // schema name
+  string schema = 4;
   // Options of the opened region.
-  map<string, string> options = 4;
+  map<string, string> options = 5;
 }
 
 message CloseRequest { uint64 region_id = 1; }