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Sort plugin names in a natural order #1166

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merged 1 commit into from
Jul 5, 2018

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adshmh
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@adshmh adshmh commented Jun 30, 2018

- What I did
Sorted the output of plugin list command by plugin name. fixes #1164

- How I did it
Added sort functionality to cli/command/plugin/list.go and unit tests to cli/command/plugin/list_test.go

- How to verify it

  1. Create multiple plugins
  2. Run docker plugin ls
  3. Output is sorted based on plugins' names

- Description for the changelog
docker plugin ls output is sorted based on plugin name

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@thaJeztah thaJeztah left a comment

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one nit, but LGTM otherwise

@@ -2,11 +2,15 @@ package plugin

import (
"context"
"sort"

"vbom.ml/util/sortorder"
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nit: can you group this import with the other imports below?

@thaJeztah
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ping @cpuguy83

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@silvin-lubecki silvin-lubecki left a comment

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LGTM

@@ -17,6 +21,12 @@ type listOptions struct {
filter opts.FilterOpt
}

type byName []*types.Plugin
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Can we use sort.Slice instead of defining a type for this?

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Thank you for the review. I will update the PR to use sort.Slice


func (n byName) Len() int { return len(n) }
func (n byName) Swap(i, j int) { n[i], n[j] = n[j], n[i] }
func (n byName) Less(i, j int) bool { return sortorder.NaturalLess(n[i].Name, n[j].Name) }
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I'm not sure we need this lib. Should be able to compare strings directly.

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I think this library compares integers embedded in strings by value. In the test case here, i.e. order of names: plugin-10-foo and plugin-2-foo, the result of direct string compare in go is opposite of that provided by this library.

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Ok, makes sense.

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Yes; it was added for natural sort

Signed-off-by: Arash Deshmeh <adeshmeh@ca.ibm.com>
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still LGTM

as a follow up, we can probably update the other parts of the code to use sort.Slice() as well

@cpuguy83 good to go?

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LGTM

@cpuguy83 cpuguy83 merged commit 8160759 into docker:master Jul 5, 2018
@GordonTheTurtle GordonTheTurtle added this to the 18.07.0 milestone Jul 5, 2018
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docker plugin ls command output is not sorted by plugin name
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