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skills: add basic grant-revoke methods #374

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merged 14 commits into from Feb 1, 2016

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zyga
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@zyga zyga commented Jan 25, 2016

This branch adds the four basic grant / revoke methods

Repository.Grant() grants a skill to a slot.
Repository.Revoke() revokes an existing grant.
Repository.GrantedTo() returns information about all skills granted to particular slots in a given snap.
Repository.GrantedBy() returns information about all skills, from a particular snap, granted to various slots in various snaps.

There are several related internal changes. Removing used skills or
occupied slots is no longer allowed and now returns an error.

Internally tests were tweaked to ensure that test skill and test slot
don't belong to the same snap. This helps in making asymmetric tests for
granted-to vs granted-by easier to follow.

This patch adds the four basic grant / revoke methods:

Repository.Grant() grants a skill to a slot.
Repository.Revoke() revokes an existing grant.
Repository.GrantedTo() returns information about all skills granted to
particular slots in a given snap.
Repository.GrantedBy() returns information about all skills, from a
particular snap, granted to various slots in various snaps.

There are several related internal changes. Removing used skills or
occupied slots is no longer allowed and now returns an error.

Internally tests were tweaked to ensure that test skill and test slot
don't belong to the same snap. This helps in making asymmetric tests for
granted-to vs granted-by easier to follow.

Signed-off-by: Zygmunt Krynicki <zygmunt.krynicki@canonical.com>
Signed-off-by: Zygmunt Krynicki <zygmunt.krynicki@canonical.com>
Signed-off-by: Zygmunt Krynicki <zygmunt.krynicki@canonical.com>
Signed-off-by: Zygmunt Krynicki <zygmunt.krynicki@canonical.com>
Signed-off-by: Zygmunt Krynicki <zygmunt.krynicki@canonical.com>
skills map[string]map[string]*Skill
slots map[string]map[string]*Slot
skillUsedBySlot map[*Slot]map[*Skill]bool
slotsUsingSkill map[*Skill]map[*Slot]bool
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skillUsedBySlot => slotSkills
slotsUsingSkill => skillSlots

@niemeyer
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LGTM once you're happy about these points.

Signed-off-by: Zygmunt Krynicki <zygmunt.krynicki@canonical.com>
Signed-off-by: Zygmunt Krynicki <zygmunt.krynicki@canonical.com>
Signed-off-by: Zygmunt Krynicki <zygmunt.krynicki@canonical.com>
Signed-off-by: Zygmunt Krynicki <zygmunt.krynicki@canonical.com>
Signed-off-by: Zygmunt Krynicki <zygmunt.krynicki@canonical.com>
@zyga
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zyga commented Feb 1, 2016

Refreshed, please have a 2nd look.

@chipaca
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chipaca commented Feb 1, 2016

👍

zyga added a commit that referenced this pull request Feb 1, 2016
skills: add basic grant-revoke methods
@zyga zyga merged commit 8233127 into snapcore:master Feb 1, 2016
@zyga zyga deleted the skills-repo-grantrevoke branch March 8, 2016 11:26
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