TOS does not store a processed image by default. You can use code to save the processed image to a specified bucket. This article explains how to save a processed image to a specified bucket using the TOS Python SDK.

Notes

To store a processed image, you must have the read permission on the source bucket and write permission on the target bucket.

Images processed by an anonymous user must be stored in a publicly writable bucket.

The source and target buckets must be in the same region.

By default, the processed image is set to Private and stored in Standard Storage.

Example code

The following code shows how to fix the image height at 100px, convert the image format to JPG, then name the processed image as temp.jpg and save it to the target bucket.

import base64​
import os​
import tos​
from tos.enum import TierType​
from tos.models2 import RestoreJobParameters​
​
# Retrieve AKSK information from environment variables.​
ak = os.getenv('TOS_ACCESS_KEY')​
sk = os.getenv('TOS_SECRET_KEY')​
# Fill in "your endpoint" and "your region" with the corresponding Endpoint of the region where your Bucket is located. Taking the example of North China 2 (Beijing), fill in "your endpoint" with tos-cn-beijing.volces.com and "your region" with cn-beijing.​
endpoint = "your endpoint"​
region = "your region"​
bucket_name = "bucket-test"​
image_key = "image.png"​
style = "image/resize,h_100/format,jpg"​
save_bucket = "your destination bucket name"​
save_object = "temp.jpg"​
​
try:​
    # Create a TosClientV2 object to perform operations on buckets and objects.​
    client = tos.TosClientV2(ak, sk, endpoint, region)​
    object_stream = client.get_object(​
        bucket=bucket_name,​
        key=image_key,​
        process=style,​
        save_bucket=base64.b64encode(save_bucket.encode("utf-8")).decode("utf-8"),​
        save_object=base64.b64encode(save_object.encode("utf-8")).decode("utf-8"),​
    )​
    print(object_stream.read())​
except tos.exceptions.TosClientError as e:​
    # Operation failed, catch client error, usually caused by invalid request parameters or network issues​
    print('fail with client error, message:{}, cause: {}'.format(e.message, e.cause))​
except tos.exceptions.TosServerError as e:​
    # Operation failed, catch server error, detailed error information can be obtained from the response​
    print('fail with server error, code: {}'.format(e.code))​
    # request id can be used to locate specific issues, it is strongly recommended to save it in the log.​
    print('error with request id: {}'.format(e.request_id))​
    print('error with message: {}'.format(e.message))​
    print('error with http code: {}'.format(e.status_code))​
    print('error with ec: {}'.format(e.ec))​
    print('error with request url: {}'.format(e.request_url))​
except Exception as e:​
    print('fail with unknown error: {}'.format(e))​