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Externalize the size limit for LMDB map size for Baser to an environment variable. #810

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Jun 28, 2024
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Externalize the size limit for LMDB map size for Baser to an environment variable. #810

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6 changes: 6 additions & 0 deletions src/keri/db/basing.py
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Original file line number Diff line number Diff line change
Expand Up @@ -593,6 +593,9 @@ 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
Expand Down Expand Up @@ -935,6 +938,9 @@ 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:
self.MapSize = int(mapSize)

super(Baser, self).__init__(headDirPath=headDirPath, reopen=reopen, **kwa)

@property
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3 changes: 2 additions & 1 deletion src/keri/db/dbing.py
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Expand Up @@ -303,6 +303,7 @@ 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):
"""
Expand Down Expand Up @@ -378,7 +379,7 @@ 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
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