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58 lines
2.1 KiB
58 lines
2.1 KiB
6 years ago
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package criticality
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// Criticality is
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type Criticality string
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// criticality
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var (
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// EmptyCriticality is used to mark any invalid criticality, and the empty criticality will be parsed as the default criticality later.
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EmptyCriticality = Criticality("")
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// CriticalPlus is reserved for the most critical requests, those that will result in serious user-visible impact if they fail.
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CriticalPlus = Criticality("CRITICAL_PLUS")
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// Critical is the default value for requests sent from production jobs. These requests will result in user-visible impact, but the impact may be less severe than those of CRITICAL_PLUS. Services are expected to provision enough capacity for all expected CRITICAL and CRITICAL_PLUS traffic.
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Critical = Criticality("CRITICAL")
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// SheddablePlus is traffic for which partial unavailability is expected. This is the default for batch jobs, which can retry requests minutes or even hours later.
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SheddablePlus = Criticality("SHEDDABLE_PLUS")
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// Sheddable is traffic for which frequent partial unavailability and occasional full unavailability is expected.
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Sheddable = Criticality("SHEDDABLE")
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// higher is more critical
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_criticalityEnum = map[Criticality]int{
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CriticalPlus: 40,
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Critical: 30,
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SheddablePlus: 20,
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Sheddable: 10,
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}
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_defaultCriticality = Critical
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)
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// Value is used to get criticality value, higher value is more critical.
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func Value(in Criticality) int {
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v, ok := _criticalityEnum[in]
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if !ok {
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return _criticalityEnum[_defaultCriticality]
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}
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return v
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}
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// Higher will compare the input criticality with self, return true if the input is more critical than self.
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func (c Criticality) Higher(in Criticality) bool {
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return Value(in) > Value(c)
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}
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// Parse will parse raw criticality string as valid critality. Any invalid input will parse as empty criticality.
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func Parse(raw string) Criticality {
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crtl := Criticality(raw)
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if _, ok := _criticalityEnum[crtl]; ok {
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return crtl
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}
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return EmptyCriticality
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}
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// Exist is used to check criticality is exist in several enumeration.
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func Exist(c Criticality) bool {
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_, ok := _criticalityEnum[c]
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return ok
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}
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