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(SQL Server) How to Generate an Azure Service Bus Shared Access Signature (SAS)

Demonstrates generating and using an Azure Service Bus Shared Access Signature (SAS).

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

Chilkat ActiveX Downloads

ActiveX for 32-bit and 64-bit Windows

// Important: See this note about string length limitations for strings returned by sp_OAMethod calls.
//
CREATE PROCEDURE ChilkatSample
AS
BEGIN
    DECLARE @hr int
    DECLARE @iTmp0 int
    DECLARE @sTmp0 nvarchar(4000)
    -- Note: Requires Chilkat v9.5.0.65 or greater.

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

    -- -------------------------------------------------------------------
    -- Create a Shared Access Signature (SAS) token for Azure Service Bus.
    -- -------------------------------------------------------------------

    DECLARE @authSas int
    EXEC @hr = sp_OACreate 'Chilkat_9_5_0.AuthAzureSAS', @authSas OUT
    IF @hr <> 0
    BEGIN
        PRINT 'Failed to create ActiveX component'
        RETURN
    END

    EXEC sp_OASetProperty @authSas, 'AccessKey', 'AzureServiceBus_PrimaryKey'

    -- The SAS token for Service Bus will look like this:
    -- (The order of params will be different.  The order does not matter.)
    -- sig=<signature-string>&se=<expiry>&skn=<keyName>&sr=<URL-encoded-resourceURI>

    -- Specify the format of the string to sign.
    EXEC sp_OASetProperty @authSas, 'StringToSign', 'resourceURI,expiry'

    -- Create an expiry to 30 days in the future.
    DECLARE @dtExpiry int
    EXEC @hr = sp_OACreate 'Chilkat_9_5_0.CkDateTime', @dtExpiry OUT

    DECLARE @success int
    EXEC sp_OAMethod @dtExpiry, 'SetFromCurrentSystemTime', @success OUT
    EXEC sp_OAMethod @dtExpiry, 'AddDays', @success OUT, 30
    EXEC sp_OAMethod @dtExpiry, 'GetAsUnixTimeStr', @sTmp0 OUT, 1
    EXEC sp_OAMethod @authSas, 'SetTokenParam', @success OUT, 'expiry', 'se', @sTmp0

    -- Set the skn (keyname)
    -- This example uses the key "RootManageSharedAccessKey".  This give full access.
    -- In a typical scenario, you would create a new Azure key (for the service bus)
    -- in the Azure portal, such that the key has limited permissions.  This would
    -- allow you to give the SAS token to others for specific access for some period of time.
    EXEC sp_OAMethod @authSas, 'SetTokenParam', @success OUT, 'keyName', 'skn', 'RootManageSharedAccessKey'

    -- Set the URL-encoded-resourceURI
    DECLARE @sbResourceUri int
    EXEC @hr = sp_OACreate 'Chilkat_9_5_0.StringBuilder', @sbResourceUri OUT

    EXEC sp_OAMethod @sbResourceUri, 'Append', @success OUT, 'https://<yournamespace>.servicebus.windows.net/'
    EXEC sp_OAMethod @sbResourceUri, 'Encode', @success OUT, 'url', 'utf-8'
    EXEC sp_OAMethod @sbResourceUri, 'GetAsString', @sTmp0 OUT
    EXEC sp_OAMethod @authSas, 'SetTokenParam', @success OUT, 'resourceURI', 'sr', @sTmp0

    -- Generate the SAS token.
    DECLARE @sasToken nvarchar(4000)
    EXEC sp_OAMethod @authSas, 'GenerateToken', @sasToken OUT
    EXEC sp_OAGetProperty @authSas, 'LastMethodSuccess', @iTmp0 OUT
    IF @iTmp0 <> 1
      BEGIN
        EXEC sp_OAGetProperty @authSas, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @authSas
        EXEC @hr = sp_OADestroy @dtExpiry
        EXEC @hr = sp_OADestroy @sbResourceUri
        RETURN
      END


    PRINT 'SAS token: ' + @sasToken

    -- Save the SAS token to a file.
    -- We can then use this pre-generated token for future Service Bus operations.
    DECLARE @fac int
    EXEC @hr = sp_OACreate 'Chilkat_9_5_0.FileAccess', @fac OUT

    EXEC sp_OAMethod @fac, 'WriteEntireTextFile', @success OUT, 'qa_data/tokens/serviceBusSas.txt', @sasToken, 'utf-8', 0

    EXEC @hr = sp_OADestroy @authSas
    EXEC @hr = sp_OADestroy @dtExpiry
    EXEC @hr = sp_OADestroy @sbResourceUri
    EXEC @hr = sp_OADestroy @fac


END
GO

 

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