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package filters
import (
"fmt"
"net/url"
"regexp"
"strings"
"github.com/containers/podman/v4/libpod"
"github.com/containers/podman/v4/pkg/util"
)
func GenerateVolumeFilters(filters url.Values) ([]libpod.VolumeFilter, error) {
var vf []libpod.VolumeFilter
for filter, v := range filters {
for _, val := range v {
switch filter {
case "name":
nameRegexp, err := regexp.Compile(val)
if err != nil {
return nil, err
}
vf = append(vf, func(v *libpod.Volume) bool {
return nameRegexp.MatchString(v.Name())
})
case "driver":
driverVal := val
vf = append(vf, func(v *libpod.Volume) bool {
return v.Driver() == driverVal
})
case "scope":
scopeVal := val
vf = append(vf, func(v *libpod.Volume) bool {
return v.Scope() == scopeVal
})
case "label":
filter := val
vf = append(vf, func(v *libpod.Volume) bool {
return util.MatchLabelFilters([]string{filter}, v.Labels())
})
case "opt":
filterArray := strings.SplitN(val, "=", 2)
filterKey := filterArray[0]
var filterVal string
if len(filterArray) > 1 {
filterVal = filterArray[1]
} else {
filterVal = ""
}
vf = append(vf, func(v *libpod.Volume) bool {
for labelKey, labelValue := range v.Options() {
if labelKey == filterKey && (filterVal == "" || labelValue == filterVal) {
return true
}
}
return false
})
case "until":
f, err := createUntilFilterVolumeFunction(val)
if err != nil {
return nil, err
}
vf = append(vf, f)
case "dangling":
danglingVal := val
invert := false
switch strings.ToLower(danglingVal) {
case "true", "1":
// Do nothing
case "false", "0":
// Dangling=false requires that we
// invert the result of IsDangling.
invert = true
default:
return nil, fmt.Errorf("%q is not a valid value for the \"dangling\" filter - must be true or false", danglingVal)
}
vf = append(vf, func(v *libpod.Volume) bool {
dangling, err := v.IsDangling()
if err != nil {
return false
}
if invert {
return !dangling
}
return dangling
})
default:
return nil, fmt.Errorf("%q is an invalid volume filter", filter)
}
}
}
return vf, nil
}
func GeneratePruneVolumeFilters(filters url.Values) ([]libpod.VolumeFilter, error) {
var vf []libpod.VolumeFilter
for filter, v := range filters {
for _, val := range v {
filterVal := val
switch filter {
case "label":
vf = append(vf, func(v *libpod.Volume) bool {
return util.MatchLabelFilters([]string{filterVal}, v.Labels())
})
case "until":
f, err := createUntilFilterVolumeFunction(filterVal)
if err != nil {
return nil, err
}
vf = append(vf, f)
default:
return nil, fmt.Errorf("%q is an invalid volume filter", filter)
}
}
}
return vf, nil
}
func createUntilFilterVolumeFunction(filter string) (libpod.VolumeFilter, error) {
until, err := util.ComputeUntilTimestamp([]string{filter})
if err != nil {
return nil, err
}
return func(v *libpod.Volume) bool {
if !until.IsZero() && v.CreatedTime().Before(until) {
return true
}
return false
}, nil
}
|
