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watchtower/pkg/filters/filters.go

66 lines
1.8 KiB
Go

package filters
import t "github.com/containrrr/watchtower/pkg/types"
// WatchtowerContainersFilter filters only watchtower containers
func WatchtowerContainersFilter(c t.FilterableContainer) bool { return c.IsWatchtower() }
// NoFilter will not filter out any containers
func NoFilter(t.FilterableContainer) bool { return true }
// FilterByNames returns all containers that match the specified name
func FilterByNames(names []string, baseFilter t.Filter) t.Filter {
if len(names) == 0 {
return baseFilter
}
return func(c t.FilterableContainer) bool {
for _, name := range names {
if (name == c.Name()) || (name == c.Name()[1:]) {
return baseFilter(c)
}
}
return false
}
}
// FilterByEnableLabel returns all containers that have the enabled label set
func FilterByEnableLabel(baseFilter t.Filter) t.Filter {
return func(c t.FilterableContainer) bool {
// If label filtering is enabled, containers should only be considered
// if the label is specifically set.
_, ok := c.Enabled()
if !ok {
return false
}
return baseFilter(c)
}
}
// FilterByDisabledLabel returns all containers that have the enabled label set to disable
func FilterByDisabledLabel(baseFilter t.Filter) t.Filter {
return func(c t.FilterableContainer) bool {
enabledLabel, ok := c.Enabled()
if ok && !enabledLabel {
// If the label has been set and it demands a disable
return false
}
return baseFilter(c)
}
}
// BuildFilter creates the needed filter of containers
func BuildFilter(names []string, enableLabel bool) t.Filter {
filter := NoFilter
filter = FilterByNames(names, filter)
if enableLabel {
// If label filtering is enabled, containers should only be considered
// if the label is specifically set.
filter = FilterByEnableLabel(filter)
}
filter = FilterByDisabledLabel(filter)
return filter
}