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48 lines
1.2 KiB
Go
48 lines
1.2 KiB
Go
// Copyright (c) 2020 Gitpod GmbH. All rights reserved.
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// Licensed under the GNU Affero General Public License (AGPL).
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// See License.AGPL.txt in the project root for license information.
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package util
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import (
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"encoding/json"
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"errors"
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"time"
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)
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// Duration is an alias for time.Duration to facilitate JSON unmarshaling
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// see https://stackoverflow.com/questions/48050945/how-to-unmarshal-json-into-durations
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type Duration time.Duration
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// UnmarshalJSON parses the duration to a time.Duration
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func (d *Duration) UnmarshalJSON(b []byte) error {
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var v interface{}
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if err := json.Unmarshal(b, &v); err != nil {
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return err
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}
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switch value := v.(type) {
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case float64:
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*d = Duration(time.Duration(value))
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return nil
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case string:
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tmp, err := time.ParseDuration(value)
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if err != nil {
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return err
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}
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*d = Duration(tmp)
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return nil
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default:
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return errors.New("invalid duration")
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}
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}
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// MarshalJSON turns a duration into a string
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func (d Duration) MarshalJSON() ([]byte, error) {
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return json.Marshal(time.Duration(d).String())
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}
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// String produces a string representation of this duration
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func (d Duration) String() string {
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return time.Duration(d).String()
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}
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