PowerBuilder

Azure Storage: Upload Contents of String Variable to Block Blob

See more Azure Cloud Storage Examples

Sample code to upload the contents of a string variable 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..

PowerBuilder

integer li_rc
long li_Success
oleobject loo_Rest
long li_BTls
long li_Port
long li_BAutoReconnect
oleobject loo_AzAuth
string ls_BlobContents
string ls_ResponseStr

li_Success = 0

//  Azure Blob Service Example: Upload the contents of a string variable 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.

loo_Rest = create oleobject
li_rc = loo_Rest.ConnectToNewObject("Chilkat.Rest")
if li_rc < 0 then
    destroy loo_Rest
    MessageBox("Error","Connecting to COM object failed")
    return
end if

//  Connect to the Azure Storage Blob Service
li_BTls = 1
li_Port = 443
li_BAutoReconnect = 1
//  In this example, the storage account name is "chilkat".
li_Success = loo_Rest.Connect("chilkat.blob.core.windows.net",li_Port,li_BTls,li_BAutoReconnect)
if li_Success <> 1 then
    Write-Debug loo_Rest.LastErrorText
    destroy loo_Rest
    return
end if

//  Provide Azure Cloud credentials for the REST call.
loo_AzAuth = create oleobject
li_rc = loo_AzAuth.ConnectToNewObject("Chilkat.AuthAzureStorage")

loo_AzAuth.AccessKey = "AZURE_ACCESS_KEY"
//  The account name used here should match the 1st part of the domain passed in the call to Connect (above).
loo_AzAuth.Account = "chilkat"
loo_AzAuth.Scheme = "SharedKey"
loo_AzAuth.Service = "Blob"
//  This causes the "x-ms-version: 2021-08-06" header to be automatically added.
loo_AzAuth.XMsVersion = "2021-08-06"
li_Success = loo_Rest.SetAuthAzureStorage(loo_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:
li_Success = loo_Rest.AddHeader("x-ms-blob-type","BlockBlob")

//  After uploading, the block blob named helloWorld.txt (in the container named "mycontainer")
//  will contain the following string:
ls_BlobContents = "Hello World!"

//  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..
ls_ResponseStr = loo_Rest.FullRequestString("PUT","/mycontainer/helloWorld.txt",ls_BlobContents)
if loo_Rest.LastMethodSuccess <> 1 then
    Write-Debug loo_Rest.LastErrorText
    destroy loo_Rest
    destroy loo_AzAuth
    return
end if

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

if loo_Rest.ResponseStatusCode <> 201 then
    //  Examine the request/response to see what happened.
    Write-Debug "response status code = " + string(loo_Rest.ResponseStatusCode)
    Write-Debug "response status text = " + loo_Rest.ResponseStatusText
    Write-Debug "response header: " + loo_Rest.ResponseHeader
    Write-Debug "response body (if any): " + ls_ResponseStr
    Write-Debug "---"
    Write-Debug "LastRequestStartLine: " + loo_Rest.LastRequestStartLine
    Write-Debug "LastRequestHeader: " + loo_Rest.LastRequestHeader
    destroy loo_Rest
    destroy loo_AzAuth
    return
end if

Write-Debug "Success."


destroy loo_Rest
destroy loo_AzAuth