138 lines
2.9 KiB
Go
138 lines
2.9 KiB
Go
package container
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import (
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"github.com/nspcc-dev/neofs-api-go/v2/container"
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)
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type (
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Attribute container.Attribute
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Attributes []*Attribute
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)
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// NewAttribute creates and initializes blank Attribute.
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//
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// Defaults:
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// - key: "";
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// - value: "".
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func NewAttribute() *Attribute {
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return NewAttributeFromV2(new(container.Attribute))
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}
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func (a *Attribute) SetKey(v string) {
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(*container.Attribute)(a).SetKey(v)
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}
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func (a *Attribute) SetValue(v string) {
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(*container.Attribute)(a).SetValue(v)
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}
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func (a *Attribute) Key() string {
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return (*container.Attribute)(a).GetKey()
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}
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func (a *Attribute) Value() string {
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return (*container.Attribute)(a).GetValue()
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}
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// NewAttributeFromV2 wraps protocol dependent version of
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// Attribute message.
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//
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// Nil container.Attribute converts to nil.
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func NewAttributeFromV2(v *container.Attribute) *Attribute {
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return (*Attribute)(v)
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}
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// ToV2 converts Attribute to v2 Attribute message.
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//
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// Nil Attribute converts to nil.
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func (a *Attribute) ToV2() *container.Attribute {
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return (*container.Attribute)(a)
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}
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func NewAttributesFromV2(v []*container.Attribute) Attributes {
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if v == nil {
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return nil
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}
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attrs := make(Attributes, 0, len(v))
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for i := range v {
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attrs = append(attrs, NewAttributeFromV2(v[i]))
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}
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return attrs
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}
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func (a Attributes) ToV2() []*container.Attribute {
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if a == nil {
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return nil
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}
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attrs := make([]*container.Attribute, 0, len(a))
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for i := range a {
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attrs = append(attrs, a[i].ToV2())
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}
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return attrs
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}
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// sets value of the attribute by key.
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func setAttribute(c *Container, key, value string) {
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var a *Attribute
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iterateAttributes(c, func(a_ *Attribute) bool {
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if a_.Key() == key {
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a = a_
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}
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return a != nil
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})
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if a == nil {
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a = NewAttribute()
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a.SetKey(key)
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c.SetAttributes(append(c.Attributes(), a))
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}
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a.SetValue(value)
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}
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// iterates over container attributes. Stops at f's true return.
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//
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// Handler must not be nil.
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func iterateAttributes(c *Container, f func(*Attribute) bool) {
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for _, a := range c.Attributes() {
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if f(a) {
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return
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}
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}
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}
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// SetNativeNameWithZone sets container native name and its zone.
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//
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// Use SetNativeName to set default zone.
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func SetNativeNameWithZone(c *Container, name, zone string) {
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setAttribute(c, container.SysAttributeName, name)
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setAttribute(c, container.SysAttributeZone, zone)
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}
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// SetNativeName sets container native name with default zone (container).
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func SetNativeName(c *Container, name string) {
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SetNativeNameWithZone(c, name, container.SysAttributeZoneDefault)
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}
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// GetNativeNameWithZone returns container native name and its zone.
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func GetNativeNameWithZone(c *Container) (name string, zone string) {
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iterateAttributes(c, func(a *Attribute) bool {
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if key := a.Key(); key == container.SysAttributeName {
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name = a.Value()
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} else if key == container.SysAttributeZone {
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zone = a.Value()
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}
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return name != "" && zone != ""
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})
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return
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}
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