1 /* 2 Copyright 2015 The Kubernetes Authors. 3 4 Licensed under the Apache License, Version 2.0 (the "License"); 5 you may not use this file except in compliance with the License. 6 You may obtain a copy of the License at 7 8 http://www.apache.org/licenses/LICENSE-2.0 9 10 Unless required by applicable law or agreed to in writing, software 11 distributed under the License is distributed on an "AS IS" BASIS, 12 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 See the License for the specific language governing permissions and 14 limitations under the License. 15 */ 16 17 package env 18 19 import ( 20 "os" 21 "strconv" 22 ) 23 24 // GetEnvAsStringOrFallback returns the env variable for the given key 25 // and falls back to the given defaultValue if not set 26 func GetEnvAsStringOrFallback(key, defaultValue string) string { 27 if v := os.Getenv(key); v != "" { 28 return v 29 } 30 return defaultValue 31 } 32 33 // GetEnvAsIntOrFallback returns the env variable (parsed as integer) for 34 // the given key and falls back to the given defaultValue if not set 35 func GetEnvAsIntOrFallback(key string, defaultValue int) (int, error) { 36 if v := os.Getenv(key); v != "" { 37 value, err := strconv.Atoi(v) 38 if err != nil { 39 return defaultValue, err 40 } 41 return value, nil 42 } 43 return defaultValue, nil 44 } 45 46 // GetEnvAsFloat64OrFallback returns the env variable (parsed as float64) for 47 // the given key and falls back to the given defaultValue if not set 48 func GetEnvAsFloat64OrFallback(key string, defaultValue float64) (float64, error) { 49 if v := os.Getenv(key); v != "" { 50 value, err := strconv.ParseFloat(v, 64) 51 if err != nil { 52 return defaultValue, err 53 } 54 return value, nil 55 } 56 return defaultValue, nil 57 } 58