Bug 1395680

Summary: `pkcon -c -1 ...` does not refresh cache, nor does `pkcon -c 0 ...`
Product: [Fedora] Fedora Reporter: Alan Jenkins <alan.christopher.jenkins>
Component: PackageKitAssignee: Richard Hughes <rhughes>
Status: CLOSED EOL QA Contact: Fedora Extras Quality Assurance <extras-qa>
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Version: 26CC: jonathan, klember, rdieter, rhughes, smparrish
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Last Closed: 2018-05-29 11:31:57 UTC Type: Bug
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Description Alan Jenkins 2016-11-16 12:28:12 UTC
Description of problem:

Several times I have seen `pkcon -c -1` suggested as a way to insist that the cache be refreshed.  E.g. https://bugzilla.redhat.com/show_bug.cgi?id=1306992#c10

Also this would be one valid interpretation of

1. the manpage text

       -c, --cache-age AGE
           Set the maximum acceptable age for cached metadata, in seconds. Use -1 for 'never'.

2. the fact that the "special" value of `0` does *not* force the cache to be refreshed either


Version-Release number of selected component (if applicable):
PackageKit-1.1.3-2.fc24.x86_64

How reproducible: has been bugging me for a while now; I don't remember seeing it work the last few times I tried it.


Steps to Reproduce:
1. use wireshark to look at outgoing packets I guess
2. pkcon -c -1 install <not-installed-package>  # don't hit "y" 

Actual results:

no metadata is re-feteched

Expected results:

there should be some value for the `-c` option which forces the freshness of metadata to be re-checked against the package servers.  I assume this special value was intended to be `-1`; perhaps it was chosen after users tried `0` and found it was not interpreted naturally.

Additional info:

Documentation should probably be more explicit, e.g. expand 'never' to 'never refresh the cache' if that was intended.  `pkcon -c 0` is an *undocumented* special case - the only valid interpretation of the documentation is "refresh always, because cache is never less than 0 seconds old".

`pkcon -c 1` appears to work as expected (effectively forcing a refresh, because cache isn't less than 1 second old).
  
pkcon is probably not used in scripts.  IMO it _could_ be acceptable to fix pkcon by making `-c 0` behave naturally as above and `-c -1` mean "never refresh the cache".  This assumes that "never refresh the cache" is a useful option.  (offline operation?)

`pkcon refresh force` should *reject* the -c option.  Currently the `force` appears to be overriding the `-c -1`.

Comment 1 Fedora End Of Life 2017-07-25 23:54:11 UTC
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bug reports from releases that are no longer maintained. At that time
this bug will be closed as EOL if it remains open with a Fedora  'version'
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plan to fix it in a currently maintained version, simply change the 'version'
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Although we aim to fix as many bugs as possible during every release's
lifetime, sometimes those efforts are overtaken by events. Often a
more recent Fedora release includes newer upstream software that fixes
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Comment 3 Fedora End Of Life 2018-05-29 11:31:57 UTC
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