32 lines
1.5 KiB
Text
32 lines
1.5 KiB
Text
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Completely finished up with making the assistant detect when git-annex's
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binary has changed and handling the restart.
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It's a bit tricky because during an upgrade there can be two assistant
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daemons running at the same time, in the same repository. Although I
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disable the watcher of the old one first. Luckily, git-annex has long
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supported running multiple concurrent git-annex processes in the same
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repository.
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The surprisingly annoying part turned out to be how to make the webapp
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redirect the browser to the new url when it's upgraded. Particularly needed
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when automatic upgrades are enabled, since the user will not then be taking
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any action in the webapp that could result in a redirect. My solution to this
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feels like overkill; the webapp does ajax long polling until it gets an
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url, and then redirects to it. Had to write javascript code and ugh.
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But, that turned out to also be useful when manually restarting the webapp
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(removed some horrible old code that ran a shell script to do it before),
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and also when shutting the webapp down.
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[[!img assistant/downloadupgrade.png alt="assistant downloading an upgrade to itself"]]
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Getting back to upgrades, I have the assistant downloading the upgrade, and
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running a hook action once the key is transferred. Now all I need is some
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platform-specific code to install it. Will probably be hairy, especially on
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OSX where I need to somehow unmount the old git-annex dmg and mount the new
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one, from within a program running on the old dmg.
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----
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Today's work was sponsored by Evan Deaubl.
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