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import base64
import io
import os
import boto3
from botocore.config import Config
import random
import string
from config_settings import settings
class S3ManagerService:
def __init__(self):
self.s3 = boto3.client(
"s3",
config=Config(signature_version="s3v4"),
aws_access_key_id=settings.AWS_ACCESS_KEY_ID,
aws_secret_access_key=settings.AWS_SECRET_ACCESS_KEY,
region_name=settings.AWS_REGION,
)
def generate_signed_url(self, file_name: str, exp: int = 43200) -> str: # 43200 seconds = 12 hours
return self.s3.generate_presigned_url(
"get_object",
Params={"Bucket": settings.AWS_BUCKET_NAME, "Key": file_name},
ExpiresIn=exp,
)
def generate_unique_file_name(self, file_name: str) -> str:
random_string = "".join(
random.choices(string.ascii_uppercase + string.digits, k=10)
)
file_extension = "png"
file_real_name = file_name.split(".")[0]
return f"{file_real_name}-{random_string}.{file_extension}"
def upload_file(self, file, file_name) -> str:
self.s3.upload_fileobj(file, settings.AWS_BUCKET_NAME, file_name)
return file_name
def upload_base64_file(self, base64_file: str, file_name: str) -> str:
return self.upload_file(io.BytesIO(base64.b64decode(base64_file)), file_name)
def get_object(self, file_name: str, bucket: str):
try:
return self.s3.get_object(Bucket=bucket, Key=file_name)
except self.s3.exceptions.NoSuchKey:
print(f"The file {file_name} does not exist in the bucket {bucket}.")
return None
except Exception as e:
print(f"An error occurred: {e}")
return None
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