56 lines
1,020 B
Go
56 lines
1,020 B
Go
package shard
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// Mode represents enumeration of Shard work modes.
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type Mode uint32
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// TODO: more detailed description of shard modes.
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const (
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_ Mode = iota
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// ModeActive is a Mode value for active shard.
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ModeActive
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// ModeInactive is a Mode value for inactive shard.
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ModeInactive
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// ModeReadOnly is a Mode value for read-only shard.
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ModeReadOnly
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// ModeFault is a Mode value for faulty shard.
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ModeFault
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// ModeEvacuate is a Mode value for evacuating shard.
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ModeEvacuate
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)
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func (m Mode) String() string {
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switch m {
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default:
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return "UNDEFINED"
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case ModeActive:
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return "ACTIVE"
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case ModeInactive:
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return "INACTIVE"
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case ModeReadOnly:
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return "READ_ONLY"
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case ModeFault:
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return "FAULT"
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case ModeEvacuate:
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return "EVACUATE"
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}
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}
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// SetMode sets mode of the shard.
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//
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// Returns any error encountered that did not allow
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// to set shard mode.
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func (s *Shard) SetMode(m Mode) error {
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s.mode.Store(uint32(m))
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return nil
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}
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func (s *Shard) getMode() Mode {
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return Mode(s.mode.Load())
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}
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