PureBasic

S3 Rename File

See more Amazon S3 (new) Examples

Demonstrates how to rename a file on Amazon S3.

Renaming an object (file) in AWS S3 using the AWS S3 API involves copying the object to a new location with the desired name and then deleting the original object.

PureBasic

IncludeFile "CkStringBuilder.pb"
IncludeFile "CkAuthAws.pb"
IncludeFile "CkRest.pb"

Procedure ChilkatExample()

    success.i = 0

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

    rest.i = CkRest::ckCreate()
    If rest.i = 0
        Debug "Failed to create object."
        ProcedureReturn
    EndIf

    ; Connect to the Amazon AWS REST server in the desired region.
    bTls.i = 1
    port.i = 443
    bAutoReconnect.i = 1
    success = CkRest::ckConnect(rest,"s3-us-west-2.amazonaws.com",port,bTls,bAutoReconnect)

    ; Provide AWS credentials.
    authAws.i = CkAuthAws::ckCreate()
    If authAws.i = 0
        Debug "Failed to create object."
        ProcedureReturn
    EndIf

    CkAuthAws::setCkAccessKey(authAws, "AWS_ACCESS_KEY")
    CkAuthAws::setCkSecretKey(authAws, "AWS_SECRET_KEY")
    CkAuthAws::setCkServiceName(authAws, "s3")

    ; This particular bucket is in the Oregon region, as opposed to the US Standard,
    ; therefore the Region must be set appropriately.
    ; Also note that we connected to "s3-us-west-2.amazonaws.com".
    CkAuthAws::setCkRegion(authAws, "us-west-2")

    CkRest::ckSetAuthAws(rest,authAws)

    ; Set the bucket name via the HOST header.
    ; In this case, the bucket name is "chilkat.qa".
    ; Note that the Host header should use "bucketName.s3.amazonaws.com", not "bucketName.s3-us-west-2.amazonaws.com"
    CkRest::setCkHost(rest, "chilkat.qa.s3.amazonaws.com")

    ; Copy /images/sea_creatures/starfish.jpg to /images/sea_creatures/starfish3.jpg
    ; Notice here that the x-amz-copy-source includes the bucket in the source path,
    ; but the target path passed to FullRequestNoBody does NOT contain the bucket (because the bucket
    ; was already specified in the Host header).
    CkRest::ckAddHeader(rest,"x-amz-copy-source","/chilkat.qa/images/sea_creatures/starfish.jpg")

    sbResponse.i = CkStringBuilder::ckCreate()
    If sbResponse.i = 0
        Debug "Failed to create object."
        ProcedureReturn
    EndIf

    success = CkRest::ckFullRequestNoBodySb(rest,"PUT","/images/sea_creatures/starfish3.jpg",sbResponse)
    If success = 0
        Debug CkRest::ckLastErrorText(rest)
        CkRest::ckDispose(rest)
        CkAuthAws::ckDispose(authAws)
        CkStringBuilder::ckDispose(sbResponse)
        ProcedureReturn
    EndIf

    ; When successful, the S3 Storage service will respond with a 200 or 204 response code,
    ; with an XML body.  
    If CkRest::ckResponseStatusCode(rest) <> 200
        ; Examine the request/response to see what happened.
        Debug "response status code = " + Str(CkRest::ckResponseStatusCode(rest))
        Debug "response status text = " + CkRest::ckResponseStatusText(rest)
        Debug "response header: " + CkRest::ckResponseHeader(rest)
        Debug "response body: " + CkStringBuilder::ckGetAsString(sbResponse)
        Debug "---"
        Debug "LastRequestStartLine: " + CkRest::ckLastRequestStartLine(rest)
        Debug "LastRequestHeader: " + CkRest::ckLastRequestHeader(rest)
    EndIf

    Debug CkStringBuilder::ckGetAsString(sbResponse)
    Debug "Copy Successful."

    ; --------------------------------------
    ; Now we can delete the original file..
    ; --------------------------------------

    ; We no longer want to send the x-amz-copy-source header.  Remove it.
    CkRest::ckRemoveHeader(rest,"x-amz-copy-source")

    success = CkRest::ckFullRequestNoBodySb(rest,"DELETE","/images/sea_creatures/starfish.jpg",sbResponse)
    If success = 0
        Debug CkRest::ckLastErrorText(rest)
        CkRest::ckDispose(rest)
        CkAuthAws::ckDispose(authAws)
        CkStringBuilder::ckDispose(sbResponse)
        ProcedureReturn
    EndIf

    ; If successfully deleted, the response status code is 204 and the response body text will be empty.
    statusCode.i = CkRest::ckResponseStatusCode(rest)
    Debug "Response status code = " + Str(statusCode)
    Debug "Response text = "
    Debug CkStringBuilder::ckGetAsString(sbResponse)


    CkRest::ckDispose(rest)
    CkAuthAws::ckDispose(authAws)
    CkStringBuilder::ckDispose(sbResponse)


    ProcedureReturn
EndProcedure