44 lines
1.3 KiB
Go
44 lines
1.3 KiB
Go
package options
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import (
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"reflect"
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"time"
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"github.com/mitchellh/mapstructure"
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)
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// Duration is an alias for time.Duration so that we can ensure the marshalling
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// and unmarshalling of string durations is done as users expect.
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// Intentional blank line below to keep this first part of the comment out of
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// any generated references.
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// Duration is as string representation of a period of time.
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// A duration string is a is a possibly signed sequence of decimal numbers,
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// each with optional fraction and a unit suffix, such as "300ms", "-1.5h" or "2h45m".
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// Valid time units are "ns", "us" (or "µs"), "ms", "s", "m", "h".
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// Conversion from string or floating point to golang duration type
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// This way floating points will be converted to seconds and strings
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// of type 3s or 5m will be parsed with time.ParseDuration
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func toDurationHookFunc() mapstructure.DecodeHookFunc {
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return func(
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f reflect.Type,
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t reflect.Type,
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data interface{}) (interface{}, error) {
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if t != reflect.TypeOf(time.Duration(0)) {
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return data, nil
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}
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switch f.Kind() {
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case reflect.String:
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return time.ParseDuration(data.(string))
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case reflect.Float64:
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return time.Duration(data.(float64) * float64(time.Second)), nil
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case reflect.Int64:
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return time.Duration(data.(int64)), nil
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default:
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return data, nil
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}
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}
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}
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