Download Bucket File to Local via GET Request

1# Copy the authentication string algorithm code from Basics (Must-Read): Generation of Authentication String
2def default_ak_sk():
3 """Using the fixed ak-sk method, i.e., permanent ak-sk"""
4 access_key = "ak"     # Fixed ak
5 secret_key = "sk"     # Fixed sk
6    download(access_key, secret_key)
7def download(ak, sk, token=None):
8 """Download a file from the bucket to the local machine"""
9 bucket_name = "bucketName" # Name of the accessed bucket
10 object_key = "/aaa.png"             # When there are no parameters in the request url, the name of the accessed key is the path, note that it starts with '/'
11 region = "bj.bcebos.com"            # The region where the bucket is located; the service domain name varies by region
12 http_method = "GET"                 # Type of request method: GET, PUT, HEAD, POST, DELETE
13 host = f"{bucket_name}.{region}"    # Assemble the access domain name based on the bucket and service domain name; there are multiple ways, only one is shown here
14# Construct the accessed header information; additional fields can be added as needed, such as the content-type field
15    header = {
16        "host": host,
17        "x-bce-date": get_x_bce_date()
18    }
19# If the request has parameters in the url, they must also participate in authentication
20    param = {}
21# Generate the authentication string
22    auth_key = generate_bos_auth(object_key, ak, sk, http_method, header, param)
23# Construct the complete access url
24    request_url = f"http://{host}{object_key}?{AUTHORIZATION}={auth_key}"
25    print(request_url)
26# If there is a token parameter, add it to the header
27    if token is not None:
28        header['x-bce-security-token'] = token
29# GET request
30    resp = requests.get(url=request_url, headers=header)
31# Local file path
32 local_path = "/path/filename"
33    save_local(resp, local_path)
34if __name__ == '__main__':
35# Download files using the fixed ak-sk method
36    default_ak_sk()

1# Copy the authentication string algorithm code from Basics (Must-Read): Generation of Authentication String
2def sts_ak_sk():
3 """Using the temporary ak-sk-token method"""
4 access_key = "8702e0c7f08211ec8168058160a92b86"      # Temporarily applied sts ak
5 secret_key = 315fddebae1f4d65b561a296c5fbc2f3"      # Temporarily applied sts sk
6# Example of temporary sts token information; please replace it with the self-applied ak/sk/token
7    token = "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"
8    download(access_key, secret_key, token)
9def download(ak, sk, token=None):
10 """Download a file from the bucket to the local machine"""
11 bucket_name = "bucketName" # Name of the accessed bucket
12 object_key = "/aaa.png"             # When there are no parameters in the request url, the name of the accessed key is the path, note that it starts with '/'
13 region = "bj.bcebos.com"            # The region where the bucket is located; the service domain name varies by region
14 http_method = "GET"                 # Type of request method: GET, PUT, HEAD, POST, DELETE
15 host = f"{bucket_name}.{region}"    # Assemble the access domain name based on the bucket and service domain name; there are multiple ways, only one is shown here
16# Construct the accessed header information; additional fields can be added as needed, such as the content-type field
17    header = {
18        "host": host,
19        "x-bce-date": get_x_bce_date()
20    }
21# If the request has parameters in the url, they must also participate in authentication
22    param = {}
23# Generate the authentication string
24    auth_key = generate_bos_auth(object_key, ak, sk, http_method, header, param)
25# Construct the complete access url
26    request_url = f"http://{host}{object_key}?{AUTHORIZATION}={auth_key}"
27# If there is a token parameter, add it to the header
28    if token is not None:
29        header['x-bce-security-token'] = token
30# GET request
31    resp = requests.get(url=request_url, headers=header)
32# Local file path
33 local_path = "/path/filename"
34    save_local(resp, local_path)
35if __name__ == '__main__':
36# Download files using the temporary ak-sk method
37    sts_ak_sk()