frostfs-node/cmd/neofs-node/attributes.go

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package main
import (
"strconv"
"github.com/nspcc-dev/neofs-api-go/pkg/netmap"
"github.com/nspcc-dev/neofs-node/pkg/util/attributes"
"github.com/pkg/errors"
"github.com/spf13/viper"
)
const (
// list of default values for well-known attributes
defaultCapacity = 0
defaultPrice = 0
)
func parseAttributes(v *viper.Viper) []*netmap.NodeAttribute {
stringAttributes := readAttributes(v)
attrs, err := attributes.ParseV2Attributes(stringAttributes, nil)
if err != nil {
fatalOnErr(err)
}
return addWellKnownAttributes(attrs)
}
func readAttributes(v *viper.Viper) (attrs []string) {
const maxAttributes = 100
for i := 0; i < maxAttributes; i++ {
attr := v.GetString(cfgNodeAttributePrefix + "_" + strconv.Itoa(i))
if attr == "" {
return
}
attrs = append(attrs, attr)
}
return attrs
}
type wellKnownNodeAttrDesc struct {
explicit bool
defaultVal string
}
func listWellKnownAttrDesc() map[string]wellKnownNodeAttrDesc {
return map[string]wellKnownNodeAttrDesc{
netmap.AttrPrice: {defaultVal: strconv.FormatUint(defaultPrice, 10)},
netmap.AttrCapacity: {defaultVal: strconv.FormatUint(defaultCapacity, 10)},
netmap.AttrUNLOCODE: {explicit: true},
}
}
func addWellKnownAttributes(attrs []*netmap.NodeAttribute) []*netmap.NodeAttribute {
mWellKnown := listWellKnownAttrDesc()
// check how user defined well-known attributes
for i := range attrs {
delete(mWellKnown, attrs[i].Key())
}
for key, desc := range mWellKnown {
// check if required attribute is set
if desc.explicit {
fatalOnErr(errors.Errorf("missing explicit value of required node attribute %s", key))
}
// set default value of the attribute
a := netmap.NewNodeAttribute()
a.SetKey(key)
a.SetValue(desc.defaultVal)
attrs = append(attrs, a)
}
return attrs
}