Read the REST Response Body into BinData

See more REST Examples

Demonstrates Rest.ReadRespBd, which reads the response body as raw bytes into a BinData, replacing its previous contents.

The file paths are relative to the application's current working directory. Absolute paths may also be used. Supply the paths appropriate to your own environment.

--
CREATE PROCEDURE ChilkatSample
AS
BEGIN
    DECLARE @hr int
    DECLARE @iTmp0 int
    DECLARE @sTmp0 nvarchar(4000)
    DECLARE @success int
    SELECT @success = 0

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

    DECLARE @bTls int
    SELECT @bTls = 1
    DECLARE @bAutoReconnect int
    SELECT @bAutoReconnect = 1
    EXEC sp_OAMethod @rest, 'Connect', @success OUT, 'example.com', 443, @bTls, @bAutoReconnect
    IF @success = 0
      BEGIN
        EXEC sp_OAGetProperty @rest, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @rest
        RETURN
      END

    --  The file paths are relative to the application's current working directory.  Absolute paths
    --  may also be used.  Supply the paths appropriate to your own environment.

    EXEC sp_OAMethod @rest, 'SendReqNoBody', @success OUT, 'GET', '/api/images/1'
    IF @success = 0
      BEGIN
        EXEC sp_OAGetProperty @rest, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @rest
        RETURN
      END

    DECLARE @statusCode int
    EXEC sp_OAMethod @rest, 'ReadResponseHeader', @statusCode OUT
    IF @statusCode < 0
      BEGIN
        EXEC sp_OAGetProperty @rest, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @rest
        RETURN
      END

    --  Check for the expected success status code.  If the response is not 200, the body is likely
    --  error text formatted as JSON, XML, or HTML rather than the expected binary content.  In that case
    --  read the body as text, report it, and return.
    IF @statusCode <> 200
      BEGIN
        DECLARE @sbError int
        EXEC @hr = sp_OACreate 'Chilkat.StringBuilder', @sbError OUT

        EXEC sp_OAMethod @rest, 'ReadRespSb', @success OUT, @sbError
        IF @success = 0
          BEGIN
            EXEC sp_OAGetProperty @rest, 'LastErrorText', @sTmp0 OUT
            PRINT @sTmp0
            EXEC @hr = sp_OADestroy @rest
            EXEC @hr = sp_OADestroy @sbError
            RETURN
          END

        PRINT 'Request failed with status code ' + @statusCode
        EXEC sp_OAMethod @sbError, 'GetAsString', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @rest
        EXEC @hr = sp_OADestroy @sbError
        RETURN
      END

    --  The status code is 200.  Read the response body as raw bytes into a BinData.
    DECLARE @bdResponse int
    EXEC @hr = sp_OACreate 'Chilkat.BinData', @bdResponse OUT

    EXEC sp_OAMethod @rest, 'ReadRespBd', @success OUT, @bdResponse
    IF @success = 0
      BEGIN
        EXEC sp_OAGetProperty @rest, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @rest
        EXEC @hr = sp_OADestroy @sbError
        EXEC @hr = sp_OADestroy @bdResponse
        RETURN
      END

    DECLARE @bSaved int
    EXEC sp_OAMethod @bdResponse, 'WriteFile', @bSaved OUT, 'qa_output/image.png'
    IF @bSaved <> 1
      BEGIN

        PRINT 'Failed to save the response body.'
        EXEC @hr = sp_OADestroy @rest
        EXEC @hr = sp_OADestroy @sbError
        EXEC @hr = sp_OADestroy @bdResponse
        RETURN
      END

    EXEC sp_OAGetProperty @bdResponse, 'NumBytes', @iTmp0 OUT

    PRINT 'Received ' + @iTmp0 + ' bytes.'

    EXEC @hr = sp_OADestroy @rest
    EXEC @hr = sp_OADestroy @sbError
    EXEC @hr = sp_OADestroy @bdResponse


END
GO