IBootstrapperBAFunction is part of Neil's ExtendedBA right? That's new in 3.8,
so I would think we could still make breaking changes to it.
Sean
From: jacob.hoo...@greenheck.com
To: wix-devs@lists.sourceforge.net
Date: Mon, 14 Oct 2013 16:44:41 +0000
Subject: Re: [WiX-devs] Thoughts on a self updating bundle
After looking into this over the weekend it seems interface
IBootstrapperBAFunction only has a small subset of possible “events” defined.
If we had OnDetectUpdateBegin in the interface then I think I could
configure a BA Function DLL to handle the app specific update checks and
utilize the existing SetUpdate call to update the bundle.
The bigger question I have is around the IBootstrapperBAFunction, which
doesn’t have a GUID associated with it. I assume adding a method to this
interface would be considered a breaking change so it wouldn’t
be accepted till 4.x, but sure would be nice to be able to version the
interfaces.
DECLARE_INTERFACE_IID_(IBootstrapperEngine, IUnknown,
"6480D616-27A0-44D7-905B-81512C29C2FB") vs interface IBootstrapperBAFunction
At first I thought I could work around this without making breaking changes
to the interface, but as the Update element is “hidden” inside the Manifest it
isn’t accessible from a UX (without doing a bunch of
voodoo to re-extract it from the bundle exe).
From: Hoover, Jacob [mailto:jacob.hoo...@greenheck.com]
Sent: Friday, October 11, 2013 1:33 PM
To: Windows Installer XML toolset developer mailing list
Subject: [WiX-devs] Thoughts on a self updating bundle
I just got bit again by a stupid bug on my end with my application
self-updates. What I’d really like to do is write a self-updating feature for
a bundle so I can write it once and have it work for all my applications
(and never have to look back again).
My initial thoughts were to pass the bundle ID across to the MSI, and allow an
application to query for the bundle in the package cache based on the bundle
ID. I’d like to be able to execute the bundle from the
cache with an /update parameter and allow the bundle to extract the BA, pass
the parameters to the BA, and allow the BA to do it’s check for updates. I
know there would be a desire to keep the implementation generic, so depending
on the user they could choose
how to determine if an update is available (version check via XML/RSS/reading
the IMAGE_FILE_HEADER, etc). I’m most familiar with WixStdBA and I have
little desire of writing a managed BA, but I am looking for comments on where
the best fit for this functionality
would be. It looks like it could it be done as an extension to WixStdBA
utilizing Neil’s recently introduced BAFunctions concept.
Looking for any thoughts before I take a swing at this.
Thanks,
Jacob
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