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Refactor publish/expose filter to remove duplication 

Signed-off-by: Vincent Demeester <vincent@sbr.pm>
This commit is contained in:
Vincent Demeester 2017-02-28 11:11:55 +01:00
parent 12485d62ee
commit af0d9bdfe4
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GPG Key ID: 083CC6FD6EB699A3
1 changed files with 23 additions and 38 deletions
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61
daemon/list.go
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@ -333,49 +333,13 @@ func (daemon *Daemon) foldFilter(config *types.ContainerListOptions) (*listConte
}
publishFilter := map[nat.Port]bool{}
err = psFilters.WalkValues("publish", func(value string) error {
if strings.Contains(value, ":") {
return fmt.Errorf("filter for 'publish' should not contain ':': %v", value)
}
//support two formats, original format <portnum>/[<proto>] or <startport-endport>/[<proto>]
proto, port := nat.SplitProtoPort(value)
start, end, err := nat.ParsePortRange(port)
if err != nil {
return fmt.Errorf("error while looking up for publish %v: %s", value, err)
}
for i := start; i <= end; i++ {
p, err := nat.NewPort(proto, strconv.FormatUint(i, 10))
if err != nil {
return fmt.Errorf("error while looking up for publish %v: %s", value, err)
}
publishFilter[p] = true
}
return nil
})
err = psFilters.WalkValues("publish", portOp("publish", publishFilter))
if err != nil {
return nil, err
}
exposeFilter := map[nat.Port]bool{}
err = psFilters.WalkValues("expose", func(value string) error {
if strings.Contains(value, ":") {
return fmt.Errorf("filter for 'expose' should not contain ':': %v", value)
}
//support two formats, original format <portnum>/[<proto>] or <startport-endport>/[<proto>]
proto, port := nat.SplitProtoPort(value)
start, end, err := nat.ParsePortRange(port)
if err != nil {
return fmt.Errorf("error while looking up for 'expose' %v: %s", value, err)
}
for i := start; i <= end; i++ {
p, err := nat.NewPort(proto, strconv.FormatUint(i, 10))
if err != nil {
return fmt.Errorf("error while looking up for 'expose' %v: %s", value, err)
}
exposeFilter[p] = true
}
return nil
})
err = psFilters.WalkValues("expose", portOp("expose", exposeFilter))
if err != nil {
return nil, err
}
@ -395,6 +359,27 @@ func (daemon *Daemon) foldFilter(config *types.ContainerListOptions) (*listConte
names: daemon.nameIndex.GetAll(),
}, nil
}
func portOp(key string, filter map[nat.Port]bool) func(value string) error {
return func(value string) error {
if strings.Contains(value, ":") {
return fmt.Errorf("filter for '%s' should not contain ':': %s", key, value)
}
//support two formats, original format <portnum>/[<proto>] or <startport-endport>/[<proto>]
proto, port := nat.SplitProtoPort(value)
start, end, err := nat.ParsePortRange(port)
if err != nil {
return fmt.Errorf("error while looking up for %s %s: %s", key, value, err)
}
for i := start; i <= end; i++ {
p, err := nat.NewPort(proto, strconv.FormatUint(i, 10))
if err != nil {
return fmt.Errorf("error while looking up for %s %s: %s", key, value, err)
}
filter[p] = true
}
return nil
}
}
// includeContainerInList decides whether a container should be included in the output or not based in the filter.
// It also decides if the iteration should be stopped or not.