B4X

S3 - Working with Buckets in a Region

See more Amazon S3 (new) Examples

Demonstrates how to work with S3 buckets located in a particular region. B4X

Dim success As Boolean = False

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

'  When usig the REST class to access an S3 bucket that has been created in a particular region,
'  there are three important things to remember:
'  
'  1) Connect to the domain that includes the region.  For example, instead of connecting to
'     "s3.amazonaws.com", connect to "s3.eu-central-1.amazonaws.com" if your bucket is in the EU Frankfurt region.
'     See http://docs.aws.amazon.com/general/latest/gr/rande.html#s3_region   for a list of S3 region domains (endpoints)
'  
'  2) Set the AuthAws.Region property equal to the region, such as "eu-central-1".
'  
'  3) Include the region in request's Host header.
'  

'  This example will upload to a bucket in the eu-central-1 region.
'  
Dim rest As ChilkatRest
rest.Initialize("rest")

'  Connect to the Amazon AWS REST server.
Dim bTls As Boolean = True
Dim port As Int = 443
Dim bAutoReconnect As Boolean = True
success = rest.Connect("s3.eu-central-1.amazonaws.com", port, bTls, bAutoReconnect)

'  Provide AWS credentials for the REST call.
Dim authAws As ChilkatAuthAws
authAws.Initialize
authAws.AccessKey = "AWS_ACCESS_KEY"
authAws.SecretKey = "AWS_SECRET_KEY"
authAws.ServiceName = "s3"
authAws.Region = "eu-central-1"
success = rest.SetAuthAws(authAws)

'  Set the bucket name via the HOST header.
'  In this case, the bucket name is "chilkateufrankfurt" (which was created in the eu-central-1 region)
rest.Host = "chilkateufrankfurt.s3.eu-central-1.amazonaws.com"

Dim fileData As ChilkatBinData
fileData.Initialize
success = fileData.LoadFile("qa_data/jpg/starfish.jpg")

'  Upload the file to Amazon S3.
Dim responseBody As ChilkatStringBuilder
responseBody.Initialize
success = rest.FullRequestBd("PUT", "/starfish.jpg", fileData, responseBody)
If success <> True Then
    Log(rest.LastErrorText)
    Return
End If


'  Did we get a 200 response indicating success?
Dim statusCode As Int = rest.ResponseStatusCode
If statusCode <> 200 Then
    Log("Error response: " & responseBody.GetAsString)
    Log("Status code: " & statusCode & ", Status text: " & rest.ResponseStatusText)
    Return
End If


Log("File successfully uploaded.")