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#
# Copyright 2025 The InfiniFlow Authors. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import logging
import boto3
from botocore.exceptions import ClientError
from botocore.config import Config
import time
from io import BytesIO
from rag.utils import singleton
from rag import settings
@singleton
class RAGFlowOSS:
def __init__(self):
self.conn = None
self.oss_config = settings.OSS
self.access_key = self.oss_config.get('access_key', None)
self.secret_key = self.oss_config.get('secret_key', None)
self.endpoint_url = self.oss_config.get('endpoint_url', None)
self.region = self.oss_config.get('region', None)
self.bucket = self.oss_config.get('bucket', None)
self.prefix_path = self.oss_config.get('prefix_path', None)
self.__open__()
@staticmethod
def use_default_bucket(method):
def wrapper(self, bucket, *args, **kwargs):
# If there is a default bucket, use the default bucket
actual_bucket = self.bucket if self.bucket else bucket
return method(self, actual_bucket, *args, **kwargs)
return wrapper
@staticmethod
def use_prefix_path(method):
def wrapper(self, bucket, fnm, *args, **kwargs):
# If the prefix path is set, use the prefix path
fnm = f"{self.prefix_path}/{fnm}" if self.prefix_path else fnm
return method(self, bucket, fnm, *args, **kwargs)
return wrapper
def __open__(self):
try:
if self.conn:
self.__close__()
except Exception:
pass
try:
# Reference：https://help.aliyun.com/zh/oss/developer-reference/use-amazon-s3-sdks-to-access-oss
self.conn = boto3.client(
's3',
region_name=self.region,
aws_access_key_id=self.access_key,
aws_secret_access_key=self.secret_key,
endpoint_url=self.endpoint_url,
config=Config(s3={"addressing_style": "virtual"}, signature_version='v4')
)
except Exception:
logging.exception(f"Fail to connect at region {self.region}")
def __close__(self):
del self.conn
self.conn = None
@use_default_bucket
def bucket_exists(self, bucket):
try:
logging.debug(f"head_bucket bucketname {bucket}")
self.conn.head_bucket(Bucket=bucket)
exists = True
except ClientError:
logging.exception(f"head_bucket error {bucket}")
exists = False
return exists
def health(self):
bucket = self.bucket
fnm = "txtxtxtxt1"
fnm, binary = f"{self.prefix_path}/{fnm}" if self.prefix_path else fnm, b"_t@@@1"
if not self.bucket_exists(bucket):
self.conn.create_bucket(Bucket=bucket)
logging.debug(f"create bucket {bucket} ********")
r = self.conn.upload_fileobj(BytesIO(binary), bucket, fnm)
return r
def get_properties(self, bucket, key):
return {}
def list(self, bucket, dir, recursive=True):
return []
@use_prefix_path
@use_default_bucket
def put(self, bucket, fnm, binary):
logging.debug(f"bucket name {bucket}; filename :{fnm}:")
for _ in range(1):
try:
if not self.bucket_exists(bucket):
self.conn.create_bucket(Bucket=bucket)
logging.info(f"create bucket {bucket} ********")
r = self.conn.upload_fileobj(BytesIO(binary), bucket, fnm)
return r
except Exception:
logging.exception(f"Fail put {bucket}/{fnm}")
self.__open__()
time.sleep(1)
@use_prefix_path
@use_default_bucket
def rm(self, bucket, fnm):
try:
self.conn.delete_object(Bucket=bucket, Key=fnm)
except Exception:
logging.exception(f"Fail rm {bucket}/{fnm}")
@use_prefix_path
@use_default_bucket
def get(self, bucket, fnm):
for _ in range(1):
try:
r = self.conn.get_object(Bucket=bucket, Key=fnm)
object_data = r['Body'].read()
return object_data
except Exception:
logging.exception(f"fail get {bucket}/{fnm}")
self.__open__()
time.sleep(1)
return
@use_prefix_path
@use_default_bucket
def obj_exist(self, bucket, fnm):
try:
if self.conn.head_object(Bucket=bucket, Key=fnm):
return True
except ClientError as e:
if e.response['Error']['Code'] == '404':
return False
else:
raise
@use_prefix_path
@use_default_bucket
def get_presigned_url(self, bucket, fnm, expires):
for _ in range(10):
try:
r = self.conn.generate_presigned_url('get_object',
Params={'Bucket': bucket,
'Key': fnm},
ExpiresIn=expires)
return r
except Exception:
logging.exception(f"fail get url {bucket}/{fnm}")
self.__open__()
time.sleep(1)
return
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