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Support .env format files (#528)

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* Support `.env` format files

* Missing "dotenv" from SupportedExtns
This commit is contained in:
mexisme 2019-06-12 08:47:43 +12:00 committed by Steve Francia
parent b5bf975e58
commit 3620d3d9e1
2 changed files with 92 additions and 6 deletions
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26
viper.go
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@ -45,6 +45,7 @@ import (
"github.com/spf13/cast"
jww "github.com/spf13/jwalterweatherman"
"github.com/spf13/pflag"
"github.com/subosito/gotenv"
)
// ConfigMarshalError happens when failing to marshal the configuration.
@ -230,7 +231,7 @@ func New() *Viper {
// can use it in their testing as well.
func Reset() {
v = New()
SupportedExts = []string{"json", "toml", "yaml", "yml", "properties", "props", "prop", "hcl"}
SupportedExts = []string{"json", "toml", "yaml", "yml", "properties", "props", "prop", "hcl", "dotenv", "env"}
SupportedRemoteProviders = []string{"etcd", "consul"}
}
@ -269,7 +270,7 @@ type RemoteProvider interface {
}
// SupportedExts are universally supported extensions.
var SupportedExts = []string{"json", "toml", "yaml", "yml", "properties", "props", "prop", "hcl"}
var SupportedExts = []string{"json", "toml", "yaml", "yml", "properties", "props", "prop", "hcl", "dotenv", "env"}
// SupportedRemoteProviders are universally supported remote providers.
var SupportedRemoteProviders = []string{"etcd", "consul"}
@ -1400,6 +1401,15 @@ func (v *Viper) unmarshalReader(in io.Reader, c map[string]interface{}) error {
c[k] = v
}
case "dotenv", "env":
env, err := gotenv.StrictParse(buf)
if err != nil {
return ConfigParseError{err}
}
for k, v := range env {
c[k] = v
}
case "properties", "props", "prop":
v.properties = properties.NewProperties()
var err error
@ -1465,6 +1475,18 @@ func (v *Viper) marshalWriter(f afero.File, configType string) error {
return ConfigMarshalError{err}
}
case "dotenv", "env":
lines := []string{}
for _, key := range v.AllKeys() {
envName := strings.ToUpper(strings.Replace(key, ".", "_", -1))
val := v.Get(key)
lines = append(lines, fmt.Sprintf("%v=%v", envName, val))
}
s := strings.Join(lines, "\n")
if _, err := f.WriteString(s); err != nil {
return ConfigMarshalError{err}
}
case "toml":
t, err := toml.TreeFromMap(c)
if err != nil {

72
viper_test.go
View file

@ -64,6 +64,11 @@ organization = "MongoDB"
Bio = "MongoDB Chief Developer Advocate & Hacker at Large"
dob = 1979-05-27T07:32:00Z # First class dates? Why not?`)
var dotenvExample = []byte(`
TITLE_DOTENV="DotEnv Example"
TYPE_DOTENV=donut
NAME_DOTENV=Cake`)
var jsonExample = []byte(`{
"id": "0001",
"type": "donut",
@ -136,6 +141,10 @@ func initConfigs() {
r = bytes.NewReader(tomlExample)
unmarshalReader(r, v.config)
SetConfigType("env")
r = bytes.NewReader(dotenvExample)
unmarshalReader(r, v.config)
SetConfigType("json")
remote := bytes.NewReader(remoteExample)
unmarshalReader(remote, v.kvstore)
@ -179,6 +188,14 @@ func initTOML() {
unmarshalReader(r, v.config)
}
func initDotEnv() {
Reset()
SetConfigType("env")
r := bytes.NewReader(dotenvExample)
unmarshalReader(r, v.config)
}
func initHcl() {
Reset()
SetConfigType("hcl")
@ -342,6 +359,11 @@ func TestTOML(t *testing.T) {
assert.Equal(t, "TOML Example", Get("title"))
}
func TestDotEnv(t *testing.T) {
initDotEnv()
assert.Equal(t, "DotEnv Example", Get("title_dotenv"))
}
func TestHCL(t *testing.T) {
initHcl()
assert.Equal(t, "0001", Get("id"))
@ -470,9 +492,11 @@ func TestSetEnvKeyReplacer(t *testing.T) {
func TestAllKeys(t *testing.T) {
initConfigs()
ks := sort.StringSlice{"title", "newkey", "owner.organization", "owner.dob", "owner.bio", "name", "beard", "ppu", "batters.batter", "hobbies", "clothing.jacket", "clothing.trousers", "clothing.pants.size", "age", "hacker", "id", "type", "eyes", "p_id", "p_ppu", "p_batters.batter.type", "p_type", "p_name", "foos"}
ks := sort.StringSlice{"title", "newkey", "owner.organization", "owner.dob", "owner.bio", "name", "beard", "ppu", "batters.batter", "hobbies", "clothing.jacket", "clothing.trousers", "clothing.pants.size", "age", "hacker", "id", "type", "eyes", "p_id", "p_ppu", "p_batters.batter.type", "p_type", "p_name", "foos",
"title_dotenv", "type_dotenv", "name_dotenv",
}
dob, _ := time.Parse(time.RFC3339, "1979-05-27T07:32:00Z")
all := map[string]interface{}{"owner": map[string]interface{}{"organization": "MongoDB", "bio": "MongoDB Chief Developer Advocate & Hacker at Large", "dob": dob}, "title": "TOML Example", "ppu": 0.55, "eyes": "brown", "clothing": map[string]interface{}{"trousers": "denim", "jacket": "leather", "pants": map[string]interface{}{"size": "large"}}, "id": "0001", "batters": map[string]interface{}{"batter": []interface{}{map[string]interface{}{"type": "Regular"}, map[string]interface{}{"type": "Chocolate"}, map[string]interface{}{"type": "Blueberry"}, map[string]interface{}{"type": "Devil's Food"}}}, "hacker": true, "beard": true, "hobbies": []interface{}{"skateboarding", "snowboarding", "go"}, "age": 35, "type": "donut", "newkey": "remote", "name": "Cake", "p_id": "0001", "p_ppu": "0.55", "p_name": "Cake", "p_batters": map[string]interface{}{"batter": map[string]interface{}{"type": "Regular"}}, "p_type": "donut", "foos": []map[string]interface{}{map[string]interface{}{"foo": []map[string]interface{}{map[string]interface{}{"key": 1}, map[string]interface{}{"key": 2}, map[string]interface{}{"key": 3}, map[string]interface{}{"key": 4}}}}}
all := map[string]interface{}{"owner": map[string]interface{}{"organization": "MongoDB", "bio": "MongoDB Chief Developer Advocate & Hacker at Large", "dob": dob}, "title": "TOML Example", "ppu": 0.55, "eyes": "brown", "clothing": map[string]interface{}{"trousers": "denim", "jacket": "leather", "pants": map[string]interface{}{"size": "large"}}, "id": "0001", "batters": map[string]interface{}{"batter": []interface{}{map[string]interface{}{"type": "Regular"}, map[string]interface{}{"type": "Chocolate"}, map[string]interface{}{"type": "Blueberry"}, map[string]interface{}{"type": "Devil's Food"}}}, "hacker": true, "beard": true, "hobbies": []interface{}{"skateboarding", "snowboarding", "go"}, "age": 35, "type": "donut", "newkey": "remote", "name": "Cake", "p_id": "0001", "p_ppu": "0.55", "p_name": "Cake", "p_batters": map[string]interface{}{"batter": map[string]interface{}{"type": "Regular"}}, "p_type": "donut", "foos": []map[string]interface{}{map[string]interface{}{"foo": []map[string]interface{}{map[string]interface{}{"key": 1}, map[string]interface{}{"key": 2}, map[string]interface{}{"key": 3}, map[string]interface{}{"key": 4}}}}, "title_dotenv": "DotEnv Example", "type_dotenv": "donut", "name_dotenv": "Cake"}
var allkeys sort.StringSlice
allkeys = AllKeys()
@ -756,8 +780,11 @@ func TestFindsNestedKeys(t *testing.T) {
"hobbies": []interface{}{
"skateboarding", "snowboarding", "go",
},
"title": "TOML Example",
"newkey": "remote",
"TITLE_DOTENV": "DotEnv Example",
"TYPE_DOTENV": "donut",
"NAME_DOTENV": "Cake",
"title": "TOML Example",
"newkey": "remote",
"batters": map[string]interface{}{
"batter": []interface{}{
map[string]interface{}{
@ -1077,6 +1104,43 @@ func TestWriteConfigTOML(t *testing.T) {
assert.Equal(t, v.GetString("owner.organization"), v2.GetString("owner.organization"))
}
var dotenvWriteExpected = []byte(`
TITLE="DotEnv Write Example"
NAME=Oreo
KIND=Biscuit
`)
func TestWriteConfigDotEnv(t *testing.T) {
fs := afero.NewMemMapFs()
v := New()
v.SetFs(fs)
v.SetConfigName("c")
v.SetConfigType("env")
err := v.ReadConfig(bytes.NewBuffer(dotenvWriteExpected))
if err != nil {
t.Fatal(err)
}
if err := v.WriteConfigAs("c.env"); err != nil {
t.Fatal(err)
}
// The TOML String method does not order the contents.
// Therefore, we must read the generated file and compare the data.
v2 := New()
v2.SetFs(fs)
v2.SetConfigName("c")
v2.SetConfigType("env")
v2.SetConfigFile("c.env")
err = v2.ReadInConfig()
if err != nil {
t.Fatal(err)
}
assert.Equal(t, v.GetString("title"), v2.GetString("title"))
assert.Equal(t, v.GetString("type"), v2.GetString("type"))
assert.Equal(t, v.GetString("kind"), v2.GetString("kind"))
}
var yamlWriteExpected = []byte(`age: 35
beard: true
clothing: