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package internal
import (
"fmt"
"os"
"reflect"
"time"
)
type DurationBundle struct {
EventuallyTimeout time.Duration
EventuallyPollingInterval time.Duration
ConsistentlyDuration time.Duration
ConsistentlyPollingInterval time.Duration
}
const (
EventuallyTimeoutEnvVarName = "GOMEGA_DEFAULT_EVENTUALLY_TIMEOUT"
EventuallyPollingIntervalEnvVarName = "GOMEGA_DEFAULT_EVENTUALLY_POLLING_INTERVAL"
ConsistentlyDurationEnvVarName = "GOMEGA_DEFAULT_CONSISTENTLY_DURATION"
ConsistentlyPollingIntervalEnvVarName = "GOMEGA_DEFAULT_CONSISTENTLY_POLLING_INTERVAL"
)
func FetchDefaultDurationBundle() DurationBundle {
return DurationBundle{
EventuallyTimeout: durationFromEnv(EventuallyTimeoutEnvVarName, time.Second),
EventuallyPollingInterval: durationFromEnv(EventuallyPollingIntervalEnvVarName, 10*time.Millisecond),
ConsistentlyDuration: durationFromEnv(ConsistentlyDurationEnvVarName, 100*time.Millisecond),
ConsistentlyPollingInterval: durationFromEnv(ConsistentlyPollingIntervalEnvVarName, 10*time.Millisecond),
}
}
func durationFromEnv(key string, defaultDuration time.Duration) time.Duration {
value := os.Getenv(key)
if value == "" {
return defaultDuration
}
duration, err := time.ParseDuration(value)
if err != nil {
panic(fmt.Sprintf("Expected a duration when using %s! Parse error %v", key, err))
}
return duration
}
func toDuration(input interface{}) time.Duration {
duration, ok := input.(time.Duration)
if ok {
return duration
}
value := reflect.ValueOf(input)
kind := reflect.TypeOf(input).Kind()
if reflect.Int <= kind && kind <= reflect.Int64 {
return time.Duration(value.Int()) * time.Second
} else if reflect.Uint <= kind && kind <= reflect.Uint64 {
return time.Duration(value.Uint()) * time.Second
} else if reflect.Float32 <= kind && kind <= reflect.Float64 {
return time.Duration(value.Float() * float64(time.Second))
} else if reflect.String == kind {
duration, err := time.ParseDuration(value.String())
if err != nil {
panic(fmt.Sprintf("%#v is not a valid parsable duration string.", input))
}
return duration
}
panic(fmt.Sprintf("%v is not a valid interval. Must be time.Duration, parsable duration string or a number.", input))
}
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