Fix lmdb limit issue

src/keri/db/basing.py

@@ -494,6 +494,9 @@ def reopenDB(db, clear=False, **kwa):
         db.close(clear=clear)
 
 
+KERIBaserMapSizeKey = "KERI_BASER_MAP_SIZE"
+
+
 class Baser(dbing.LMDBer):
     """
     Baser sets up named sub databases with Keri Event Logs within main database
@@ -773,6 +776,13 @@ def __init__(self, headDirPath=None, reopen=False, **kwa):
         self._kevers = dbdict()
         self._kevers.db = self  # assign db for read through cache of kevers
 
+        if (mapSize := os.getenv(KERIBaserMapSizeKey)) is not None:
+            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)
 
     @property

src/keri/db/dbing.py

@@ -306,6 +306,7 @@ class LMDBer(filing.Filer):
     TempSuffix = "_test"
     Perm = stat.S_ISVTX | stat.S_IRUSR | stat.S_IWUSR | stat.S_IXUSR  # 0o1700==960
     MaxNamedDBs = 96
+    MapSize = 104857600
 
 
     def __init__(self, readonly=False, **kwa):
@@ -380,7 +381,7 @@ def reopen(self, readonly=False, **kwa):
 
         # open lmdb major database instance
         # creates files data.mdb and lock.mdb in .dbDirPath
-        self.env = lmdb.open(self.path, max_dbs=self.MaxNamedDBs, map_size=104857600,
+        self.env = lmdb.open(self.path, max_dbs=self.MaxNamedDBs, map_size=self.MapSize,
                              mode=self.perm, readonly=self.readonly)
         self.opened = True if opened and self.env else False
         return self.opened

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()