Chilkat Online Tools

ListChangedBlocks Python Example

Amazon Elastic Block Store

import sys
import chilkat

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

rest = chilkat.CkRest()

authAws = chilkat.CkAuthAws()
authAws.put_AccessKey("AWS_ACCESS_KEY")
authAws.put_SecretKey("AWS_SECRET_KEY")

# Don't forget to change the region to your particular region. (Also make the same change in the call to Connect below.)
authAws.put_Region("us-west-2")
authAws.put_ServiceName("ebs")
# SetAuthAws causes Chilkat to automatically add the following headers: Authorization, X-Amz-Date
rest.SetAuthAws(authAws)

# URL: https://ebs.us-west-2.amazonaws.com/
# Use the same region as specified above.
success = rest.Connect("ebs.us-west-2.amazonaws.com",443,True,True)
if (success != True):
    print("ConnectFailReason: " + str(rest.get_ConnectFailReason()))
    print(rest.lastErrorText())
    sys.exit()

rest.AddHeader("Content-Type","application/x-amz-json-1.1")
rest.AddHeader("X-Amz-Target","ListChangedBlocks")

sbResponseBody = chilkat.CkStringBuilder()
success = rest.FullRequestNoBodySb("GET","/snapshots/{secondSnapshotId}/changedblocks",sbResponseBody)
if (success != True):
    print(rest.lastErrorText())
    sys.exit()

respStatusCode = rest.get_ResponseStatusCode()
print("response status code = " + str(respStatusCode))
if (respStatusCode != 200):
    print("Response Header:")
    print(rest.responseHeader())
    print("Response Body:")
    print(sbResponseBody.getAsString())
    sys.exit()

jResp = chilkat.CkJsonObject()
jResp.LoadSb(sbResponseBody)

# The following code parses the JSON response.
# A sample JSON response is shown below the sample code.

# Use this online tool to generate parsing code from sample JSON:
# Generate Parsing Code from JSON

BlockSize = jResp.IntOf("BlockSize")
ExpiryTime = jResp.IntOf("ExpiryTime")
NextToken = jResp.stringOf("NextToken")
VolumeSize = jResp.IntOf("VolumeSize")
i = 0
count_i = jResp.SizeOfArray("ChangedBlocks")
while i < count_i :
    jResp.put_I(i)
    BlockIndex = jResp.IntOf("ChangedBlocks[i].BlockIndex")
    FirstBlockToken = jResp.stringOf("ChangedBlocks[i].FirstBlockToken")
    SecondBlockToken = jResp.stringOf("ChangedBlocks[i].SecondBlockToken")
    i = i + 1

# A sample JSON response body parsed by the above code:

# {
#   "BlockSize": number,
#   "ChangedBlocks": [
#     {
#       "BlockIndex": number,
#       "FirstBlockToken": "string",
#       "SecondBlockToken": "string"
#     }
#   ],
#   "ExpiryTime": number,
#   "NextToken": "string",
#   "VolumeSize": number
# }