(Tcl) Azure Storage: Upload Binary Data to Block Blob using BinData

Sample code to upload binary bytes (contained in a Chilkat BinData object) to a block blob in Azure Cloud Storage. This creates the block blob, or replaces an existing block blob.

Note: The maximum size of a block blob created by uploading in a single step is 64MB. For larger files, the upload must be broken up into blocks. There is another Chilkat example for that..

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load ./chilkat.dll

# Azure Blob Service Example: Upload binary bytes to a block blob.
# This creates a new block blob or replaces an existing one in its entirety.
# See also: https://msdn.microsoft.com/en-us/library/azure/dd179451.aspx

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

set rest [new_CkRest]

# Connect to the Azure Storage Blob Service
set bTls 1
set port 443
set bAutoReconnect 1
# In this example, the storage account name is "chilkat".
set success [CkRest_Connect $rest "chilkat.blob.core.windows.net" $port $bTls $bAutoReconnect]
if {$success != 1} then {
    puts [CkRest_lastErrorText $rest]
    delete_CkRest $rest
    exit
}

# Provide Azure Cloud credentials for the REST call.
set azAuth [new_CkAuthAzureStorage]

CkAuthAzureStorage_put_AccessKey $azAuth "AZURE_ACCESS_KEY"
# The account name used here should match the 1st part of the domain passed in the call to Connect (above).
CkAuthAzureStorage_put_Account $azAuth "chilkat"
CkAuthAzureStorage_put_Scheme $azAuth "SharedKey"
CkAuthAzureStorage_put_Service $azAuth "Blob"
# This causes the "x-ms-version: 2020-08-04" header to be automatically added.
CkAuthAzureStorage_put_XMsVersion $azAuth "2020-08-04"
set success [CkRest_SetAuthAzureStorage $rest $azAuth]

# Note: The application does not need to explicitly set the following
# headers: Content-Length, x-ms-date, Authorization.  These headers
# are automatically set by Chilkat.

# IMPORTANT: Make sure to set the x-ms-blob-type header:
set success [CkRest_AddHeader $rest "x-ms-blob-type" "BlockBlob"]

# For this example, we'll just load a JPG file into memory..
set bd [new_CkBinData]

set success [CkBinData_LoadFile $bd "qa_data/jpg/starfish.jpg"]
if {$success == 0} then {
    puts "Failed to load the file to be uploaded."
    delete_CkRest $rest
    delete_CkAuthAzureStorage $azAuth
    delete_CkBinData $bd
    exit
}

# Note: The maximum size of a block blob created by uploading in a single step is 64MB.  
# For larger files, the upload must be broken up into blocks.  There is another Chilkat example for that..
set sbResponseBody [new_CkStringBuilder]

set success [CkRest_FullRequestBd $rest "PUT" "/mycontainer/starfish.jpg" $bd $sbResponseBody]
if {$success == 0} then {
    puts [CkRest_lastErrorText $rest]
    delete_CkRest $rest
    delete_CkAuthAzureStorage $azAuth
    delete_CkBinData $bd
    delete_CkStringBuilder $sbResponseBody
    exit
}

# When successful, the Azure Storage service will respond with a 201 response status code,
# with no response body.

if {[CkRest_get_ResponseStatusCode $rest] != 201} then {
    # Examine the request/response to see what happened.
    puts "response status code = [CkRest_get_ResponseStatusCode $rest]"
    puts "response status text = [CkRest_responseStatusText $rest]"
    puts "response header: [CkRest_responseHeader $rest]"
    puts "response body (if any): [CkStringBuilder_getAsString $sbResponseBody]"
    puts "---"
    puts "LastRequestStartLine: [CkRest_lastRequestStartLine $rest]"
    puts "LastRequestHeader: [CkRest_lastRequestHeader $rest]"
    delete_CkRest $rest
    delete_CkAuthAzureStorage $azAuth
    delete_CkBinData $bd
    delete_CkStringBuilder $sbResponseBody
    exit
}

puts "Success."

delete_CkRest $rest
delete_CkAuthAzureStorage $azAuth
delete_CkBinData $bd
delete_CkStringBuilder $sbResponseBody