SQL Server

Backblaze S3 Download File

See more Backblaze S3 Examples

Demonstrates how to download a file from a Backblaze bucket.

The Chilkat S3 functions in the HTTP class are compatible with the Backblaze service. However, because of some specific issues, Chilkat v9.5.0.89 or later is needed.

SQL Server

-- Important: See this note about string length limitations for strings returned by sp_OAMethod calls.
--
CREATE PROCEDURE ChilkatSample
AS
BEGIN
    DECLARE @hr int
    -- Important: Do not use nvarchar(max).  See the warning about using nvarchar(max).
    DECLARE @sTmp0 nvarchar(4000)
    DECLARE @success int
    SELECT @success = 0

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

    DECLARE @http int
    EXEC @hr = sp_OACreate 'Chilkat.Http', @http OUT
    IF @hr <> 0
    BEGIN
        PRINT 'Failed to create ActiveX component'
        RETURN
    END

    -- keyID = Access Key ID or Access Key
    EXEC sp_OASetProperty @http, 'AwsAccessKey', 'access-key'

    -- applicationKey = Secret Access Key or Secret Key
    EXEC sp_OASetProperty @http, 'AwsSecretKey', 'secret-key'

    -- Region is the 2nd part of your S3 Endpoint
    EXEC sp_OASetProperty @http, 'AwsEndpoint', 's3.us-west-002.backblazeb2.com'

    DECLARE @bucketName nvarchar(4000)
    SELECT @bucketName = 'chilkat-test'
    DECLARE @objectName nvarchar(4000)
    SELECT @objectName = 'seahorse.jpg'
    DECLARE @localFilePath nvarchar(4000)
    SELECT @localFilePath = 'qa_output/seahorse.jpg'

    EXEC sp_OAMethod @http, 'S3_DownloadFile', @success OUT, @bucketName, @objectName, @localFilePath
    IF @success <> 1
      BEGIN
        EXEC sp_OAGetProperty @http, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
      END
    ELSE
      BEGIN

        PRINT 'File downloaded.'
      END

    EXEC @hr = sp_OADestroy @http


END
GO