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Beego/config/env/env.go
2017-04-30 22:41:23 +08:00

88 lines
2.2 KiB
Go

// Copyright 2014 beego Author. All Rights Reserved.
// Copyright 2017 Faissal Elamraoui. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// Package env is used to parse environment.
package env
import (
"fmt"
"os"
"strings"
"github.com/astaxie/beego/utils"
)
var env *utils.BeeMap
func init() {
env = utils.NewBeeMap()
for _, e := range os.Environ() {
splits := strings.Split(e, "=")
env.Set(splits[0], os.Getenv(splits[0]))
}
}
// Get returns a value by key.
// If the key does not exist, the default value will be returned.
func Get(key string, defVal string) string {
if val := env.Get(key); val != nil {
return val.(string)
}
return defVal
}
// MustGet returns a value by key.
// If the key does not exist, it will return an error.
func MustGet(key string) (string, error) {
if val := env.Get(key); val != nil {
return val.(string), nil
}
return "", fmt.Errorf("no env variable with %s", key)
}
// Set sets a value in the ENV copy.
// This does not affect the child process environment.
func Set(key string, value string) {
env.Set(key, value)
}
// MustSet sets a value in the ENV copy and the child process environment.
// It returns an error in case the set operation failed.
func MustSet(key string, value string) error {
err := os.Setenv(key, value)
if err != nil {
return err
}
env.Set(key, value)
return nil
}
// GetAll returns all keys/values in the current child process environment.
func GetAll() map[string]string {
items := env.Items()
envs := make(map[string]string, env.Count())
for key, val := range items {
switch key := key.(type) {
case string:
switch val := val.(type) {
case string:
envs[key] = val
}
}
}
return envs
}