Fixed KERI_BASER_MAP_SIZE not integer bug. (WebOfTrust#812)

* Fixed KERI_BASER_MAP_SIZE not integer bug.

Added log message and exception check for when KERI_BASER_MAP_SIZE not an
integer.

Signed-off-by: Charles Lanahan <[email protected]>

* Rethrow exception per PR request to fail fast.  Updated log message to reflect the issue

---------

Signed-off-by: Charles Lanahan <[email protected]>

src/keri/db/basing.py

@@ -777,7 +777,11 @@ def __init__(self, headDirPath=None, reopen=False, **kwa):
         self._kevers.db = self  # assign db for read through cache of kevers
 
         if (mapSize := os.getenv(KERIBaserMapSizeKey)) is not None:
-            self.MapSize = int(mapSize)
+            try:
+                self.MapSize = int(mapSize)
+            except ValueError:
+                logger.error("KERI_BASER_MAP_SIZE must be an integer value >1!")
+                raise
 
         super(Baser, self).__init__(headDirPath=headDirPath, reopen=reopen, **kwa)
 

tests/db/test_basing.py

@@ -2273,6 +2273,22 @@ def test_group_members():
 
     """End Test"""
 
+def test_KERI_BASER_MAP_SIZE_handles_bad_values(caplog):
+    # Base case works because of above tests, they will all break if happy path
+    # is broken.  We'll just test some unhappy values.
+
+    # Pytest will fail if any exceptions raised here.
+    os.environ["KERI_BASER_MAP_SIZE"] = "foo" # Not an int
+    err_msg = "KERI_BASER_MAP_SIZE must be an integer value > 1!"
+    with pytest.raises(ValueError):
+        Baser(reopen=False, temp=True)
+        assert err_msg in caplog.messages
+    os.environ["KERI_BASER_MAP_SIZE"] = "1.0" # Not an int
+    with pytest.raises(ValueError):
+        Baser(reopen=False, temp=True)
+        assert err_msg in caplog.messages
+    os.environ.pop("KERI_BASER_MAP_SIZE")
+
 
 if __name__ == "__main__":
     test_baser()