PowerBuilder

Glacier Download Archive

See more Amazon Glacier Examples

Demonstrates how to download an Amazon Glacier archive. Downloading a Glacier archive is a two step process. First an archive retrieval job is initiated. After it completes, the job output is downloaded (i.e. the archive contents are downloaded.)

Note: This example requires Chilkat v9.5.0.78 or greater.

PowerBuilder

integer li_rc
long li_Success
oleobject loo_Rest
long li_BTls
long li_Port
long li_BAutoReconnect
oleobject loo_AuthAws
long li_ResponseStatusCode
oleobject loo_BodyStream
string ls_JsonError

li_Success = 0

//  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 Amazon AWS REST server in the desired region.
li_BTls = 1
li_Port = 443
li_BAutoReconnect = 1
li_Success = loo_Rest.Connect("glacier.us-west-2.amazonaws.com",li_Port,li_BTls,li_BAutoReconnect)

//  Provide AWS credentials.
loo_AuthAws = create oleobject
li_rc = loo_AuthAws.ConnectToNewObject("Chilkat.AuthAws")

loo_AuthAws.AccessKey = "AWS_ACCESS_KEY"
loo_AuthAws.SecretKey = "AWS_SECRET_KEY"
loo_AuthAws.ServiceName = "glacier"
loo_AuthAws.Region = "us-west-2"

li_Success = loo_Rest.SetAuthAws(loo_AuthAws)

//  --------------------------------------------------------------------------
//  Note: The above REST connection and setup of the AWS credentials
//  can be done once.  After connecting, any number of REST calls can be made.
//  The "auto reconnect" property passed to rest.Connect indicates that if
//  the connection is lost, a REST method call will automatically reconnect
//  if needed.
//  --------------------------------------------------------------------------

//  For more information, see Glacier Retrieve Job Output Reference Documentation
//  
loo_Rest.AddHeader("x-amz-glacier-version","2012-06-01")

//  To download an archive, we'll make several method calls:
//  1) Send the HTTPS GET request.
//  2) Get the response body.
//  3) If the response status code indicates success, stream the response body (i.e the archive data) to a file.
//  4) If the response status code indicates an error, get the JSON error response.

//  Send the GET request.
li_Success = loo_Rest.SendReqNoBody("GET","/AWS_ACCOUNT_ID/vaults/chilkat/jobs/JOB_ID/output")
if li_Success <> 1 then
    Write-Debug loo_Rest.LastErrorText
    destroy loo_Rest
    destroy loo_AuthAws
    return
end if

//  Read the response header.
li_ResponseStatusCode = loo_Rest.ReadResponseHeader()
if li_ResponseStatusCode < 0 then
    Write-Debug loo_Rest.LastErrorText
    destroy loo_Rest
    destroy loo_AuthAws
    return
end if

Write-Debug "Response status code = " + string(li_ResponseStatusCode)

//  We expect a 200 response status if the archive data is coming.
//  Otherwise, we'll get a JSON response body with an error message(or no response body).
if li_ResponseStatusCode = 200 then

    loo_BodyStream = create oleobject
    li_rc = loo_BodyStream.ConnectToNewObject("Chilkat.Stream")

    //  The stream's sink will be a file.
    loo_BodyStream.SinkFile = "qa_output/archiveData.dat"

    //  Read the response body to the stream.
    li_Success = loo_Rest.ReadRespBodyStream(loo_BodyStream,1)
    if li_Success <> 1 then
        Write-Debug loo_Rest.LastErrorText
        destroy loo_Rest
        destroy loo_AuthAws
        destroy loo_BodyStream
        return
    end if

    Write-Debug "Successfully received the archive file."

else
    ls_JsonError = loo_Rest.ReadRespBodyString()
    if loo_Rest.LastMethodSuccess <> 1 then
        Write-Debug loo_Rest.LastErrorText
    else
        Write-Debug ls_JsonError
    end if

end if



destroy loo_Rest
destroy loo_AuthAws
destroy loo_BodyStream