Chilkat Examples

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(PowerBuilder) Upload using Azure Storage Account Shared Access Signature (SAS) Authorization

Sample code to upload binary bytes to a block blob in Azure Cloud Storage using an Azure Storage Account Shared Access Signature (SAS) Authorization. This creates a 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..

Note: This example requires Chilkat v9.5.0.65 or later.

Chilkat ActiveX Downloads

ActiveX for 32-bit and 64-bit Windows

integer li_rc
oleobject loo_Rest
integer li_BTls
integer li_Port
integer li_BAutoReconnect
integer li_Success
oleobject loo_SbToken
oleobject loo_BinData
oleobject loo_SbResponse

// Note: This example requires Chilkat v9.5.0.65 or greater.

// Azure Blob Service Example: Upload binary bytes to a block blob.
// This uses a Shared Access Signature (SAS) for Authorization.
// 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
// Use "Chilkat_9_5_0.Rest" for versions of Chilkat < 10.0.0
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

// ----------------------------------------------------------------------------------------------
// The code above this comment could be placed inside a function/subroutine within the application
// because the connection does not need to be made for every request.  Once the connection is made
// the app may send many requests..
// ----------------------------------------------------------------------------------------------

// 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.

// Let's load a previously computed Azure Storage Account SAS token and use it.
// See How to Create an Azure Storage Account Shared Access Signature
loo_SbToken = create oleobject
// Use "Chilkat_9_5_0.StringBuilder" for versions of Chilkat < 10.0.0
li_rc = loo_SbToken.ConnectToNewObject("Chilkat.StringBuilder")

li_Success = loo_SbToken.LoadFile("qa_data/tokens/azureStorageAccountSas.txt","utf-8")
if li_Success <> 1 then
    Write-Debug "Failed to load SAS token."
    destroy loo_Rest
    destroy loo_SbToken
    return
end if

// Add the Shared Access Signature query params for authorization.
loo_Rest.AddQueryParams(loo_SbToken.GetAsString())

// IMPORTANT: Make sure to set the x-ms-blob-type header:
li_Success = loo_Rest.AddHeader("x-ms-blob-type","BlockBlob")

// IMPORTANT: Make sure to add the x-ms-date header.
// When the header name is "x-ms-date", Chilkat will recognize the keyword "NOW" 
// and will substitute the current system date/time formatted as required by Microsoft.
li_Success = loo_Rest.AddHeader("x-ms-date","NOW")

// For this example, we'll just load a JPG file into memory..
loo_BinData = create oleobject
// Use "Chilkat_9_5_0.BinData" for versions of Chilkat < 10.0.0
li_rc = loo_BinData.ConnectToNewObject("Chilkat.BinData")

li_Success = loo_BinData.LoadFile("qa_data/jpg/starfish.jpg")
if li_Success <> 1 then
    Write-Debug "Failed to load JPG file."
    destroy loo_Rest
    destroy loo_SbToken
    destroy loo_BinData
    return
end if

// 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..
loo_SbResponse = create oleobject
// Use "Chilkat_9_5_0.StringBuilder" for versions of Chilkat < 10.0.0
li_rc = loo_SbResponse.ConnectToNewObject("Chilkat.StringBuilder")

li_Success = loo_Rest.FullRequestBd("PUT","/mycontainer/starfish.jpg",loo_BinData,loo_SbResponse)
if li_Success <> 1 then
    Write-Debug loo_Rest.LastErrorText
    destroy loo_Rest
    destroy loo_SbToken
    destroy loo_BinData
    destroy loo_SbResponse
    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): " + loo_SbResponse.GetAsString()
    Write-Debug "---"
    Write-Debug "LastRequestStartLine: " + loo_Rest.LastRequestStartLine
    Write-Debug "LastRequestHeader: " + loo_Rest.LastRequestHeader
    Write-Debug "Failed."
    destroy loo_Rest
    destroy loo_SbToken
    destroy loo_BinData
    destroy loo_SbResponse
    return
end if

Write-Debug "Success."


destroy loo_Rest
destroy loo_SbToken
destroy loo_BinData
destroy loo_SbResponse

 

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