Support snap configuration

[Kyle Fazzari]

Two commands will be supported: `snap set key=value` and `snap get key`. `snap set` will cause the `configure` hook to be run within the snap in question, which gives it an opportunity to respond to those changes (including vetoing them). `snap get` will obtain the config values directly from snapd (no hooks involved).

[Kyle Fazzari (kyrofa)]

Snap get/set commands (with no real functionality just yet): https://github.com/snapcore/snapd/pull/1828

[Kyle Fazzari (kyrofa)]

REST API behind the get/set commands: https://github.com/snapcore/snapd/pull/1866

[Kyle Fazzari (kyrofa)]

snapctl set: https://github.com/snapcore/snapd/pull/1952

[Kyle Fazzari (kyrofa)]

snapctl get: https://github.com/snapcore/snapd/pull/1983

[Kyle Fazzari (kyrofa)]

REST API behind snap get: https://github.com/snapcore/snapd/pull/1999

[Kyle Fazzari (kyrofa)]

Support for initial context and using it in REST API for snap set: https://github.com/snapcore/snapd/pull/2013

[Kyle Fazzari (kyrofa)]

Rename apply-config to config-changing: https://github.com/snapcore/snapd/pull/2016

[Kyle Fazzari (kyrofa)]

Note that config-changing has been renamed to configure.

[Kyle Fazzari (kyrofa)]

Document `configure` hook: https://github.com/snapcore/snapd/pull/2024

[Andy Whitcroft (apw)]

Hello Kyle, or anyone else affected,

Accepted snapd into yakkety-proposed. The package will build now and be available at https://launchpad.net/ubuntu/+source/snapd/2.17.1+16.10 in a few hours, and then in the -proposed repository.

Please help us by testing this new package. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Your feedback will aid us getting this update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug, mentioning the version of the package you tested, and change the tag from verification-needed to verification-done. If it does not fix the bug for you, please add a comment stating that, and change the tag to verification-failed. In either case, details of your testing will help us make a better decision.

Further information regarding the verification process can be found at https://wiki.ubuntu.com/QATeam/PerformingSRUVerification . Thank you in advance!

[Andy Whitcroft (apw)]

Hello Kyle, or anyone else affected,

Accepted snapd into xenial-proposed. The package will build now and be available at https://launchpad.net/ubuntu/+source/snapd/2.17.1 in a few hours, and then in the -proposed repository.

Please help us by testing this new package. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Your feedback will aid us getting this update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug, mentioning the version of the package you tested, and change the tag from verification-needed to verification-done. If it does not fix the bug for you, please add a comment stating that, and change the tag to verification-failed. In either case, details of your testing will help us make a better decision.

Further information regarding the verification process can be found at https://wiki.ubuntu.com/QATeam/PerformingSRUVerification . Thank you in advance!

[Federico Gimenez (fgimenez)]

This feature is covered by these spread tests [1] [2], this is a successful execution of them [3].

[1] https://github.com/snapcore/snapd/blob/master/tests/main/snap-get/task.yaml
[2] https://github.com/snapcore/snapd/blob/master/tests/main/snap-set/task.yaml
[3] https://travis-ci.org/snapcore/snapd/jobs/176314843

[Launchpad Janitor (janitor)]

This bug was fixed in the package snapd - 2.18+17.04ubuntu3

---------------
snapd (2.18+17.04ubuntu3) zesty; urgency=medium

  * disable ppc64el autopkgtest for now, it never worked but for
    some reason autopkgtest thinks it did at some point and asking
    for correction of the DB was not successful so far

 -- Michael Vogt <email address hidden> Fri, 02 Dec 2016 16:27:34 +0100

[Brian Murray (brian-murray)]

Hello Kyle, or anyone else affected,

Accepted snapd into yakkety-proposed. The package will build now and be available at https://launchpad.net/ubuntu/+source/snapd/2.17.1+16.10ubuntu1 in a few hours, and then in the -proposed repository.

Please help us by testing this new package. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Your feedback will aid us getting this update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug, mentioning the version of the package you tested, and change the tag from verification-needed to verification-done. If it does not fix the bug for you, please add a comment stating that, and change the tag to verification-failed. In either case, details of your testing will help us make a better decision.

Further information regarding the verification process can be found at https://wiki.ubuntu.com/QATeam/PerformingSRUVerification . Thank you in advance!

[Launchpad Janitor (janitor)]

This bug was fixed in the package snapd - 2.17.1ubuntu1

---------------
snapd (2.17.1ubuntu1) xenial; urgency=medium

  * drop xdelta dependency

snapd (2.17.1) xenial; urgency=medium

  * New upstream release, LP: #1637215:
    - release: os-release on core has changed
    - tests: /dev/ptmx does not work on powerpc, skip here
    - docs: moved to github.com/snapcore/snapd/wiki (#2258)
    - debian: golang is not installable on powerpc, use golang-any

snapd (2.17) xenial; urgency=medium

  * New upstream release, LP: #1637215:
    - overlord/ifacestate: add unit tests for undo of setup-snap-
      security (#2243)
    - daemon,overlord,snap,tests: download to .partial in final dir
      (#2237)
    - overlord/state: marshaling tests for lanes (#2245)
    - overlord/state: introduce state lanes (#2241)
    - overlord/snapstate: fix revert+refresh (#2224)
    - interfaces/sytemd: enable/disable generated service units (#2229)
    - many: fix incorrect security files generation on undo
    - overlord/snapstate: add dynamic snapdX.Y assumes (#2227)
    - interfaces: network-manager: give slot full read-write access to
      /run/NetworkManager
    - docs: update the name of the command for the cross-build
    - overlord/snapstate: fix missing argument to Noticef
    - snapstate: ensure gadget/core/kernel can not be disabled (#2218)
    - asserts: limit to 1y only if len(models) == 0 (#2219)
    - debian: only install share/locale if available (missing on
      powerpc)
    - overlrod/snapstate: fix revert followed by refresh to old-current
      (#2214)
    - interfaces/builtin: network-manager and bluez can change hostname
      (#2204)
    - snap: switch the auto-import dir to /run/snapd/auto-import
    - docs: less details about cloud.cfg as requested in trello (#2206)
    - spread.yaml: Ensure ubuntu user has passwordless sudo for
      autopkgtests (#2201)
    - interfaces/builtin: add dcdbas-control interface
    - boot: do not set boot to try mode if the revision is unchanged
    - interfaces: add shutdown interface (#2162)
    - interfaces: add system-power-control interface
    - many: use the new systemd backend for configuring GPIOs
    - overlord/ifacestate: setup security for slots before plugs
    - snap: spool assertion candidates if snapd is not up yet
    - store,daemon,overlord: download things to a partials dir
    - asserts,daemon: implement system-user-authority header/concept
    - interfaces/builtin: home base declaration rule using on-classic
      for its policy
    - interfaces/builtin: finish decl based checks
    - asserts: bump snap-declaration to allow signing with new-style
      plugs and slots
    - overlord: checks for kernel installation/refresh based on model
      assertion and previous kernel
    - tests/lib/fakestore: fix logic to distinguish assertion not found
      errors
    - client: add a few explicit error types (around the request cycle)
    - tests/lib/fakestore/cmd/fakestore: make it log, and fix a typo
    - overlord/snapstate: two bugs for one
    - snappy: disable auto-import of assertions on classic (#2122)
    - overlord/snapstate: move trash cleanup to a cleanup handler
      (#2173)
    -...

[Federico Gimenez (fgimenez)]

Verified on yakkety:

$ apt-cache policy snapd
snapd:
  Installed: 2.17.1+16.10ubuntu1
  Candidate: 2.17.1+16.10ubuntu1
  Version table:
 *** 2.17.1+16.10ubuntu1 500
        500 http://archive.ubuntu.com/ubuntu yakkety-proposed/main amd64 Packages
        100 /var/lib/dpkg/status
     2.16+16.10ubuntu1.2 500
        500 http://es.archive.ubuntu.com/ubuntu yakkety-updates/main amd64 Packages
     2.16+16.10ubuntu1 500
        500 http://es.archive.ubuntu.com/ubuntu yakkety/main amd64 Packages
$ sudo snap install --candidate spread-cron
spread-cron (candidate) 1.0 from 'canonical' installed
$ sudo snap set spread-cron username=blabla
$

[Federico Gimenez (fgimenez)]

The final "snap get" call was missing in the previous paste:

$ sudo snap get spread-cron username
blabla

[Launchpad Janitor (janitor)]

This bug was fixed in the package snapd - 2.20.1+16.10ubuntu2

---------------
snapd (2.20.1+16.10ubuntu2) yakkety; urgency=medium

  * New upstream release, LP: #1648520
    - spread.yaml: update for ppc64el, i386, armhf

 -- Michael Vogt <email address hidden> Tue, 03 Jan 2017 22:16:08 +0100