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import os 

from appr.utils import symbol_by_name 

 

DEFAULT_MEDIA_TYPE = 'kpm' 

DEFAULT_STORAGE_MODULE = "appr.models.kv.filesystem" 

DEFAULT_DB_CLASS = "%s.db:ApprDB" % DEFAULT_STORAGE_MODULE 

DEFAULT_BLOB_CLASS = "%s.blob:Blob" % DEFAULT_STORAGE_MODULE 

 

 

def get_db_class(name=None): 

if not name: 

name = os.getenv("APPR_DB_CLASS", DEFAULT_DB_CLASS) 

 

if name == "filesystem": 

from appr.models.kv.filesystem.db import FilesystemDB 

db = FilesystemDB 

 

elif name == "redis": 

from appr.models.kv.redis.db import RedisDB 

db = RedisDB 

 

elif name == "etcd": 

from appr.models.kv.etcd.db import EtcdDB 

db = EtcdDB 

 

else: 

db = symbol_by_name(name) 

 

return db 

 

 

ApprDB = get_db_class() 

Channel = ApprDB.Channel 

Package = ApprDB.Package 

Blob = ApprDB.Blob