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env.go
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env.go
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/*
* === This file is part of ALICE O² ===
*
* Copyright 2017 CERN and copyright holders of ALICE O².
* Author: Teo Mrnjavac <teo.mrnjavac@cern.ch>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* In applying this license CERN does not waive the privileges and
* immunities granted to it by virtue of its status as an
* Intergovernmental Organization or submit itself to any jurisdiction.
*/
package core
import (
"os"
"strconv"
"time"
)
func env(key, defaultValue string) (value string) {
if value = os.Getenv(key); value == "" {
value = defaultValue
}
return
}
func envInt(key, defaultValue string) int {
value, err := strconv.Atoi(env(key, defaultValue))
if err != nil {
panic(err.Error())
}
return value
}
func envDuration(key, defaultValue string) time.Duration {
value, err := time.ParseDuration(env(key, defaultValue))
if err != nil {
panic(err.Error())
}
return value
}
func envFloat(key, defaultValue string) float64 {
value, err := strconv.ParseFloat(env(key, defaultValue), 64)
if err != nil {
panic(err.Error())
}
return value
}