Make a note of the conversion pattern when rewriting to Python after checking the operation of REST-API with cURL

Use IBM Cloud object storage to verify the behavior of cURL.
Write the confirmed cURL in a Python script and inspect it in the object storage.

Part 1. Get an authentication token

For cURL

curl -X "POST" "https://iam.cloud.ibm.com/identity/token" \
     -H 'Accept: application/json' \
     -H 'Content-Type: application/x-www-form-urlencoded' \
     --data-urlencode "apikey={api-key}" \
     --data-urlencode "response_type=cloud_iam" \
     --data-urlencode "grant_type=urn:ibm:params:oauth:grant-type:apikey"

For Python

#!/usr/bin/env python
# -*- coding: utf-8 -*-
import os
import requests
import json

#Get a token
headers = {
    'Accept': 'application/json',
    'Content-Type': 'application/x-www-form-urlencoded',
}
data = {
    'apikey': os.environ['IBM_APIKEY'],
    'response_type': 'cloud_iam',
    'grant_type': 'urn:ibm:params:oauth:grant-type:apikey'
}
response = requests.post('https://iam.cloud.ibm.com/identity/token', headers=headers, data=data)
print(response)
output = response.json()
#print(json.dumps(output, indent=4))

ibm_access_token = output['access_token']

print(ibm_access_token)

Python execution result

STATUS :<Response [200]>

{
"access_token":"eyJraWQ******************************************2Erh-Te-w",
"expires_in":3600,
}
#Very long tokens are valid for 1 hour (3600)=60 seconds x 60 minutes)

Part 2. View a list of buckets

For cURL

curl "https://(endpoint)/" \
 -H "Authorization: bearer (token)" \
 -H "ibm-service-instance-id: (resource-instance-id)"

For Python

#Write the same python script until you get the token
# “#!/usr/bin/env from python to ibm_access_token = output['access_token']Until"
#I will omit it here.

#List of objects
headers = {
    'Authorization': 'bearer ' + ibm_access_token
}
response = requests.get('https://s3.jp-tok.cloud-object-storage.appdomain.cloud/robocamera', headers=headers)
print("STATUS :" + str(response))
print("HEADERS:" + str(response.headers))
print("TEXT   :" + str(response.text))

Python execution result

STATUS :<Response [200]>
HEADERS:{'Content-Length': '1938', 'ibm-sse-kp-enabled':<Omitted>'Content-Type': 'application/xml'}
TEXT   :<?xml version="1.0" encoding="UTF-8" standalone="yes"?><Omitted>

        <Name>robocamera</Name>
        <Contents>
            <Key>ciel_face_s.png</Key><LastModified>2019-11-30T02:50:53.410Z</LastModified>
            <Key>ghostpicture.jpg</Key><LastModified>2019-11-30T01:46:52.413Z</LastModified>
            <Key>index.html</Key><LastModified>2019-11-24T14:48:55.793Z</LastModified>

Part 3. Upload the file to the bucket

For cURL

curl -X "PUT" "https://(endpoint)/(bucket-name)/(object-key)" \
 -H "Authorization: bearer (token)" \
 -H "Content-Type: (content-type)" \
 -d "(object-contents)"

For Python

#Upload the camera image file to IBM Cloud Object Storage.
#In this example[/robocamera]Is the bucket name,[ghostpicture.jpg]Is the key name of the object.
    headers = {
        'Authorization': 'bearer ' + ibm_access_token,
        'Content-Type': 'image/jpeg',
    }
    f = open('capture_output.jpg', 'rb')
    img_data = f.read()
    f.close()
    response = requests.put(service_endpoint + '/robocamera/ghostpicture.jpg', headers=headers, data=img_data)
    #When you want to check when debugging token acquisition
    print("UPLOAD STATUS:" + str(response))