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Fix regression when filtering container names using a leading slash

Browse source 
Commit 5c8da2e967 updated the filtering behavior
to match container-names without having to specify the leading slash.

This change caused a regression in situations where a regex was provided as
filter, using an explicit leading slash (`--filter name=^/mycontainername`).

This fix changes the filters to match containers both with, and without the
leading slash, effectively making the leading slash optional when filtering.

With this fix, filters with and without a leading slash produce the same result:

    $ docker ps --filter name=^a
    CONTAINER ID        IMAGE               COMMAND             CREATED             STATUS              PORTS               NAMES
    21afd6362b0c        busybox             "sh"                2 minutes ago       Up 2 minutes                            a2
    56e53770e316        busybox             "sh"                2 minutes ago       Up 2 minutes                            a1

    $ docker ps --filter name=^/a
    CONTAINER ID        IMAGE               COMMAND             CREATED             STATUS              PORTS               NAMES
    21afd6362b0c        busybox             "sh"                2 minutes ago       Up 2 minutes                            a2
    56e53770e316        busybox             "sh"                3 minutes ago       Up 3 minutes                            a1

    $ docker ps --filter name=^b
    CONTAINER ID        IMAGE               COMMAND             CREATED              STATUS              PORTS               NAMES
    b69003b6a6fe        busybox             "sh"                About a minute ago   Up About a minute                       b1

    $ docker ps --filter name=^/b
    CONTAINER ID        IMAGE               COMMAND             CREATED             STATUS              PORTS               NAMES
    b69003b6a6fe        busybox             "sh"                56 seconds ago      Up 54 seconds                           b1

    $ docker ps --filter name=/a
    CONTAINER ID        IMAGE               COMMAND             CREATED             STATUS              PORTS               NAMES
    21afd6362b0c        busybox             "sh"                3 minutes ago       Up 3 minutes                            a2
    56e53770e316        busybox             "sh"                4 minutes ago       Up 4 minutes                            a1

    $ docker ps --filter name=a
    CONTAINER ID        IMAGE               COMMAND             CREATED             STATUS              PORTS               NAMES
    21afd6362b0c        busybox             "sh"                3 minutes ago       Up 3 minutes                            a2
    56e53770e316        busybox             "sh"                4 minutes ago       Up 4 minutes                            a1

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
This commit is contained in:
Sebastiaan van Stijn 2018-08-28 21:40:13 +02:00
parent a005332346
commit 6f9b5ba810
No known key found for this signature in database
GPG key ID: 76698F39D527CE8C
2 changed files with 27 additions and 6 deletions
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5
daemon/list.go
View file

@ -146,7 +146,8 @@ func (daemon *Daemon) filterByNameIDMatches(view container.View, ctx *listContex
continue
}
for _, eachName := range idNames {
if ctx.filters.Match("name", strings.TrimPrefix(eachName, "/")) {
// match both on container name with, and without slash-prefix
if ctx.filters.Match("name", eachName) || ctx.filters.Match("name", strings.TrimPrefix(eachName, "/")) {
matches[id] = true
}
}
@ -429,7 +430,7 @@ func includeContainerInList(container *container.Snapshot, ctx *listContext) ite
}
// Do not include container if the name doesn't match
if !ctx.filters.Match("name", strings.TrimPrefix(container.Name, "/")) {
if !ctx.filters.Match("name", container.Name) && !ctx.filters.Match("name", strings.TrimPrefix(container.Name, "/")) {
return excludeContainer
}

28
daemon/list_test.go
View file

@ -4,7 +4,6 @@ import (
"io/ioutil"
"os"
"path/filepath"
"strings"
"testing"
"github.com/docker/docker/api/types"
@ -35,6 +34,7 @@ func TestMain(m *testing.M) {
// work against it. It takes in a pointer to Daemon so that
// minor operations are not repeated by the caller
func setupContainerWithName(t *testing.T, name string, daemon *Daemon) *container.Container {
t.Helper()
var (
id = uuid.New()
computedImageID = digest.FromString(id)
@ -46,6 +46,9 @@ func setupContainerWithName(t *testing.T, name string, daemon *Daemon) *containe
c := container.NewBaseContainer(id, cRoot)
// these are for passing includeContainerInList
if name[0] != '/' {
name = "/" + name
}
c.Name = name
c.Running = true
c.HostConfig = &containertypes.HostConfig{}
@ -68,7 +71,7 @@ func setupContainerWithName(t *testing.T, name string, daemon *Daemon) *containe
func containerListContainsName(containers []*types.Container, name string) bool {
for _, container := range containers {
for _, containerName := range container.Names {
if strings.TrimPrefix(containerName, "/") == name {
if containerName == name {
return true
}
}
@ -110,16 +113,33 @@ func TestNameFilter(t *testing.T) {
containerList, err := d.Containers(&types.ContainerListOptions{
Filters: filters.NewArgs(filters.Arg("name", "^a")),
})
assert.Assert(t, err == nil)
assert.NilError(t, err)
assert.Assert(t, is.Len(containerList, 2))
assert.Assert(t, containerListContainsName(containerList, one.Name))
assert.Assert(t, containerListContainsName(containerList, two.Name))
// Same as above but with slash prefix should produce the same result
containerListWithPrefix, err := d.Containers(&types.ContainerListOptions{
Filters: filters.NewArgs(filters.Arg("name", "^/a")),
})
assert.NilError(t, err)
assert.Assert(t, is.Len(containerListWithPrefix, 2))
assert.Assert(t, containerListContainsName(containerListWithPrefix, one.Name))
assert.Assert(t, containerListContainsName(containerListWithPrefix, two.Name))
// Same as above but make sure it works for exact names
containerList, err = d.Containers(&types.ContainerListOptions{
Filters: filters.NewArgs(filters.Arg("name", "b1")),
})
assert.Assert(t, err == nil)
assert.NilError(t, err)
assert.Assert(t, is.Len(containerList, 1))
assert.Assert(t, containerListContainsName(containerList, three.Name))
// Same as above but with slash prefix should produce the same result
containerListWithPrefix, err = d.Containers(&types.ContainerListOptions{
Filters: filters.NewArgs(filters.Arg("name", "/b1")),
})
assert.NilError(t, err)
assert.Assert(t, is.Len(containerListWithPrefix, 1))
assert.Assert(t, containerListContainsName(containerListWithPrefix, three.Name))
}