forked from TrueCloudLab/frostfs-api-go
75 lines
2.1 KiB
Go
75 lines
2.1 KiB
Go
package container
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// SysAttributePrefix is a prefix of key to system attribute.
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const SysAttributePrefix = "__NEOFS__"
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const (
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// SysAttributeSubnet is a string ID of container's storage subnet.
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SysAttributeSubnet = SysAttributePrefix + "SUBNET"
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// SysAttributeName is a string of human-friendly container name registered as the domain in NNS contract.
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SysAttributeName = SysAttributePrefix + "NAME"
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// SysAttributeZone is a string of zone for container name.
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SysAttributeZone = SysAttributePrefix + "ZONE"
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// SysAttributeHomomorphicHashing is a container's homomorphic hashing state.
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SysAttributeHomomorphicHashing = SysAttributePrefix + "DISABLE_HOMOMORPHIC_HASHING"
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)
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// SysAttributeZoneDefault is a default value for SysAttributeZone attribute.
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const SysAttributeZoneDefault = "container"
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const disabledHomomorphicHashingValue = "true"
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// HomomorphicHashingState returns container's homomorphic
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// hashing state:
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// - true if hashing is enabled;
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// - false if hashing is disabled.
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//
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// All container's attributes must be unique, otherwise behavior
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// is undefined.
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//
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// See also SetHomomorphicHashingState.
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func (c Container) HomomorphicHashingState() bool {
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for i := range c.attr {
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if c.attr[i].GetKey() == SysAttributeHomomorphicHashing {
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return c.attr[i].GetValue() != disabledHomomorphicHashingValue
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}
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}
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return true
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}
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// SetHomomorphicHashingState sets homomorphic hashing state for
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// container.
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//
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// All container's attributes must be unique, otherwise behavior
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// is undefined.
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//
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// See also HomomorphicHashingState.
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func (c *Container) SetHomomorphicHashingState(enable bool) {
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for i := range c.attr {
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if c.attr[i].GetKey() == SysAttributeHomomorphicHashing {
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if enable {
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// approach without allocation/waste
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// coping works since the attributes
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// order is not important
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c.attr[i] = c.attr[len(c.attr)-1]
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c.attr = c.attr[:len(c.attr)-1]
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} else {
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c.attr[i].SetValue(disabledHomomorphicHashingValue)
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}
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return
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}
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}
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if !enable {
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attr := Attribute{}
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attr.SetKey(SysAttributeHomomorphicHashing)
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attr.SetValue(disabledHomomorphicHashingValue)
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c.attr = append(c.attr, attr)
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}
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}
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