CkPython

Manage Bucket Storage Class

See more Google Cloud Storage Examples

Demonstrates how to manage a bucket's default storage class.

See Cloud Storage Classes for information about storage classes.

CkPython

import sys
import chilkat

success = False

# This example requires the Chilkat API to have been previously unlocked.
# See Global Unlock Sample for sample code.

# This example uses a previously obtained access token having permission for the 
# scope "https://www.googleapis.com/auth/cloud-platform"

# In this example, Get Google Cloud Storage OAuth2 Access Token, 
# the service account access token was saved to a text file.  This example fetches the access token from the file..
sbToken = chilkat.CkStringBuilder()
sbToken.LoadFile("qa_data/tokens/googleCloudStorageAccessToken.txt","utf-8")

# ---- Step 1
# Create the JSON body of the PUT request that will be sent.

# {
#   "storageClass": "[STORAGE_CLASS]"
# }
# 

json = chilkat.CkJsonObject()
# Be careful if using the "regional" storage class.  See the note below about the 400 error response.
json.UpdateString("storageClass","nearline")

# ---- Step 2
# Send a PUT equivalent to this curl command

# curl -X PUT --data-binary @[JSON_FILE_NAME].json \
#     -H "Authorization: Bearer [OAUTH2_TOKEN]" \
#     -H "Content-Type: application/json" \
#     "https://www.googleapis.com/storage/v1/b/[BUCKET_NAME]?fields=storageClass"

http = chilkat.CkHttp()
http.put_AuthToken(sbToken.getAsString())

http.SetUrlVar("bucket_name","chilkat-ocean")
url = "https://www.googleapis.com/storage/v1/b/{$bucket_name}?fields=storageClass"
resp = chilkat.CkHttpResponse()
success = http.HttpJson("PUT",url,json,"application/json",resp)
if (success == False):
    print(http.lastErrorText())
    sys.exit()

responseCode = resp.get_StatusCode()
if (responseCode == 401):
    print(resp.bodyStr())
    print("If invalid credentials, then it is likely the access token expired.")
    print("Your app should automatically fetch a new access token and re-try.")
    sys.exit()

# On my first try at running this code, I received the following error response:
# Response code: 400
# Response body
# {
#  "error": {
#   "errors": [
#    {
#     "domain": "global",
#     "reason": "invalid",
#     "message": "The combination of locationConstraint and storageClass you provided is not supported for your project"
#    }
#   ],
#   "code": 400,
#   "message": "The combination of locationConstraint and storageClass you provided is not supported for your project"
#  }
# }
# 

# This was because my storage location was a Multi-regional location, and I tried to assign the "regional" storage class,
# which is not allowed. 

print("Response code: " + str(responseCode))
print("Response body")
print(resp.bodyStr())

# A response code = 200 indicates success, and the response body contains the JSON
# 
# Response code: 200
# Response body
# {
#  "storageClass": "NEARLINE"
# }
#