option pool_recycle (#233)

* option pool_recycle

* #233 allow setting pool_recycle

* #233 typo error

* #233 typo error

* #233 reformat code

Co-authored-by: kula <zhengwei@igengmei.com>

Author: kulame

.gitignore

@@ -1,3 +1,4 @@
+.vscode/
 *.pyc
 test.db
 .coverage

databases/backends/mysql.py

@@ -32,12 +32,15 @@ def _get_connection_kwargs(self) -> dict:
         kwargs = {}
         min_size = url_options.get("min_size")
         max_size = url_options.get("max_size")
+        pool_recycle = url_options.get("pool_recycle")
         ssl = url_options.get("ssl")
 
         if min_size is not None:
             kwargs["minsize"] = int(min_size)
         if max_size is not None:
             kwargs["maxsize"] = int(max_size)
+        if pool_recycle is not None:
+            kwargs["pool_recycle"] = int(pool_recycle)
         if ssl is not None:
             kwargs["ssl"] = {"true": True, "false": False}[ssl.lower()]
 

tests/test_connection_options.py

@@ -67,6 +67,12 @@ def test_mysql_explicit_ssl():
     assert kwargs == {"ssl": True}
 
 
+def test_mysql_pool_recycle():
+    backend = MySQLBackend("mysql://localhost/database?pool_recycle=20")
+    kwargs = backend._get_connection_kwargs()
+    assert kwargs == {"pool_recycle": 20}
+
+
 def test_aiopg_pool_size():
     backend = AiopgBackend(
         "postgresql+aiopg://localhost/database?min_size=1&max_size=20"