95 lines
3.3 KiB
Python
95 lines
3.3 KiB
Python
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import logging
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from collections.abc import Generator
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from typing import override
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import boto3
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from botocore.client import Config
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from botocore.exceptions import ClientError
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from configs import dify_config
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from extensions.storage.base_storage import BaseStorage
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logger = logging.getLogger(__name__)
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class AwsS3Storage(BaseStorage):
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"""Implementation for Amazon Web Services S3 storage."""
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def __init__(self):
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super().__init__()
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self.bucket_name = dify_config.S3_BUCKET_NAME
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if dify_config.S3_USE_AWS_MANAGED_IAM:
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logger.info("Using AWS managed IAM role for S3")
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session = boto3.Session()
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region_name = dify_config.S3_REGION
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self.client = session.client(service_name="s3", region_name=region_name)
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else:
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logger.info("Using ak and sk for S3")
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self.client = boto3.client(
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"s3",
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aws_secret_access_key=dify_config.S3_SECRET_KEY,
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aws_access_key_id=dify_config.S3_ACCESS_KEY,
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endpoint_url=dify_config.S3_ENDPOINT,
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region_name=dify_config.S3_REGION,
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config=Config(s3={"addressing_style": dify_config.S3_ADDRESS_STYLE}),
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)
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# create bucket
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try:
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self.client.head_bucket(Bucket=self.bucket_name)
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except ClientError as e:
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# if bucket not exists, create it
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if e.response.get("Error", {}).get("Code") == "404":
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self.client.create_bucket(Bucket=self.bucket_name)
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# if bucket is not accessible, pass, maybe the bucket is existing but not accessible
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elif e.response.get("Error", {}).get("Code") == "403":
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pass
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else:
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# other error, raise exception
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raise
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@override
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def save(self, filename, data):
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self.client.put_object(Bucket=self.bucket_name, Key=filename, Body=data)
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@override
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def load_once(self, filename: str) -> bytes:
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try:
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data: bytes = self.client.get_object(Bucket=self.bucket_name, Key=filename)["Body"].read()
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except ClientError as ex:
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if ex.response.get("Error", {}).get("Code") == "NoSuchKey":
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raise FileNotFoundError("File not found")
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else:
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raise
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return data
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@override
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def load_stream(self, filename: str) -> Generator:
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try:
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response = self.client.get_object(Bucket=self.bucket_name, Key=filename)
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yield from response["Body"].iter_chunks()
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except ClientError as ex:
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if ex.response.get("Error", {}).get("Code") == "NoSuchKey":
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raise FileNotFoundError("file not found")
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elif "reached max retries" in str(ex):
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raise ValueError("please do not request the same file too frequently")
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else:
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raise
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@override
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def download(self, filename, target_filepath):
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self.client.download_file(self.bucket_name, filename, target_filepath)
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@override
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def exists(self, filename):
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try:
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self.client.head_object(Bucket=self.bucket_name, Key=filename)
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return True
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except:
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return False
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@override
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def delete(self, filename: str):
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self.client.delete_object(Bucket=self.bucket_name, Key=filename)
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