[Bug 876298] Re: [MASTER] We need to better handle external payloads (Flash, msttcorefonts) not being available.

[Michael Vogt]

The update-alternatives warning was mostly a precaution measure as I'm
not sure if that is doing proper locking. If it does thats fine, but
there is a race otherwise that a package may call it on something when
the cron job runs and tries to modify it too. If that is a non-issue
even better :)

About the failed downloads> Without knowing the implementation (yet) I would assume we define states like:
 needs-downloading, fetched, failed-permanently
and a way to list the state of the current queue for the user. The failed-permanently one is tricky as it may be that its
a system that is very rarely connected to the net (so ifup-down integration would be good) so a fixed number of days
is not ideal (if the system goes online only every week). But at the same time daily retries on a resource that is no longer
available forever is equally bad. So maybe a combination of both? Say 14 days or 10 retries (when there was a working
network connect)?

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https://bugs.launchpad.net/bugs/876298

Title:
  [MASTER] We need to better handle external payloads (Flash,
  msttcorefonts) not being available.

Status in “flashplugin-nonfree” package in Ubuntu:
  Triaged
Status in “update-manager” package in Ubuntu:
  Triaged
Status in “update-notifier” package in Ubuntu:
  Triaged

Bug description:
  At the 11.10 release archive.canonical.com collapsed under heavy load
  and started returning 503 errors.  This caused the flash package to be
  unable to grab its payload and thus caused the package to fail, which
  in turn caused the installation to fail.

  The current plan is to add metadata to a package where it can add a
  URL to retrieve its data, so ubiquity and apt-get --download-only can
  cache it.  We also need a way to queue up package installation post-
  install, for when we commit to installing flash but cannot do so due
  to network issues, or when the user wishes to have full language
  support post-install.

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