Make SQLAlchemy engine options POOL_SIZE & MAX_OVERFLOW configurable.#…

…6208

web/config.py

@@ -22,6 +22,14 @@
 if sys.path[0] != root:
     sys.path.insert(0, root)
 
+# The number of connections to keep open inside the connection pool.
+# A SQLITE_CONNECTION_POOL_SIZE setting of 0 indicates no limit.
+SQLITE_CONNECTION_POOL_SIZE = 7
+# The number of connections to allow in connection pool "overflow".
+# These connections that can be opened above and beyond the pool_size setting
+SQLITE_CONNECTION_MAX_OVERFLOW = 1000
+# Note - This are imported because of circular import error
+
 from pgadmin.utils import env, IS_WIN, fs_short_path
 
 ##########################################################################

web/pgadmin/model/__init__.py

@@ -23,7 +23,7 @@
 from sqlalchemy.ext.mutable import MutableDict
 import sqlalchemy.types as types
 import uuid
-import json
+import config
 
 ##########################################################################
 #
@@ -41,7 +41,11 @@
 #
 ##########################################################################
 
-db = SQLAlchemy()
+db = SQLAlchemy(
+    engine_options={'pool_size': config.SQLITE_CONNECTION_POOL_SIZE,
+                    'max_overflow': config.SQLITE_CONNECTION_MAX_OVERFLOW})
+
+
 USER_ID = 'user.id'
 SERVER_ID = 'server.id'