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Merge branch 'master' into GetStringEnv

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Nathan Trujillo 2020-06-16 12:47:18 -07:00
commit 85fe21cf7e
16 changed files with 1947 additions and 384 deletions
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15
.editorconfig Normal file
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root = true
[*]
charset = utf-8
end_of_line = lf
indent_size = 4
indent_style = space
insert_final_newline = true
trim_trailing_whitespace = true
[*.go]
indent_style = tab
[{Makefile, *.mk}]
indent_style = tab

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[*.yml]
indent_size = 2

34
.github/workflows/ci.yml vendored Normal file
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@ -0,0 +1,34 @@
name: CI
on:
push:
branches:
- master
pull_request:
jobs:
build:
name: Build
runs-on: ubuntu-latest
strategy:
matrix:
go: ['1.11', '1.12', '1.13', '1.14']
env:
VERBOSE: 1
GOFLAGS: -mod=readonly
GOPROXY: https://proxy.golang.org
steps:
- name: Set up Go
uses: actions/setup-go@v2
with:
go-version: ${{ matrix.go }}
- name: Checkout code
uses: actions/checkout@v2
- name: Lint
run: make lint
- name: Test
run: make test

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.gitignore vendored
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@ -1,29 +1,5 @@
# Compiled Object files, Static and Dynamic libs (Shared Objects) /.idea/
*.o /bin/
*.a /build/
*.so /var/
/vendor/
# Folders
_obj
_test
# Architecture specific extensions/prefixes
*.[568vq]
[568vq].out
*.cgo1.go
*.cgo2.c
_cgo_defun.c
_cgo_gotypes.go
_cgo_export.*
_testmain.go
*.exe
*.test
*.bench
.vscode
# exclude dependencies in the `/vendor` folder
vendor

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.golangci.yml Normal file
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linters-settings:
golint:
min-confidence: 0.1
goimports:
local-prefixes: github.com/spf13/viper
linters:
enable-all: true
disable:
- funlen
- maligned
# TODO: fix me
- wsl
- gochecknoinits
- gosimple
- gochecknoglobals
- errcheck
- lll
- godox
- scopelint
- gocyclo
- gocognit
- gocritic
service:
golangci-lint-version: 1.21.x

27
.travis.yml
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@ -1,27 +0,0 @@
go_import_path: github.com/spf13/viper
language: go
go:
- 1.10.x
- 1.11.x
- tip
os:
- linux
- osx
matrix:
allow_failures:
- go: tip
fast_finish: true
script:
- go install ./...
- diff -u <(echo -n) <(gofmt -d .)
- go test -v ./...
after_success:
- go get -u -d github.com/spf13/hugo
- cd $GOPATH/src/github.com/spf13/hugo && make && ./hugo -s docs && cd -
sudo: false

76
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# A Self-Documenting Makefile: http://marmelab.com/blog/2016/02/29/auto-documented-makefile.html
OS = $(shell uname | tr A-Z a-z)
export PATH := $(abspath bin/):${PATH}
# Build variables
BUILD_DIR ?= build
export CGO_ENABLED ?= 0
export GOOS = $(shell go env GOOS)
ifeq (${VERBOSE}, 1)
ifeq ($(filter -v,${GOARGS}),)
GOARGS += -v
endif
TEST_FORMAT = short-verbose
endif
# Dependency versions
GOTESTSUM_VERSION = 0.4.0
GOLANGCI_VERSION = 1.21.0
# Add the ability to override some variables
# Use with care
-include override.mk
.PHONY: clear
clear: ## Clear the working area and the project
rm -rf bin/
.PHONY: check
check: test lint ## Run tests and linters
bin/gotestsum: bin/gotestsum-${GOTESTSUM_VERSION}
@ln -sf gotestsum-${GOTESTSUM_VERSION} bin/gotestsum
bin/gotestsum-${GOTESTSUM_VERSION}:
@mkdir -p bin
curl -L https://github.com/gotestyourself/gotestsum/releases/download/v${GOTESTSUM_VERSION}/gotestsum_${GOTESTSUM_VERSION}_${OS}_amd64.tar.gz | tar -zOxf - gotestsum > ./bin/gotestsum-${GOTESTSUM_VERSION} && chmod +x ./bin/gotestsum-${GOTESTSUM_VERSION}
TEST_PKGS ?= ./...
.PHONY: test
test: TEST_FORMAT ?= short
test: SHELL = /bin/bash
test: export CGO_ENABLED=1
test: bin/gotestsum ## Run tests
@mkdir -p ${BUILD_DIR}
bin/gotestsum --no-summary=skipped --junitfile ${BUILD_DIR}/coverage.xml --format ${TEST_FORMAT} -- -race -coverprofile=${BUILD_DIR}/coverage.txt -covermode=atomic $(filter-out -v,${GOARGS}) $(if ${TEST_PKGS},${TEST_PKGS},./...)
bin/golangci-lint: bin/golangci-lint-${GOLANGCI_VERSION}
@ln -sf golangci-lint-${GOLANGCI_VERSION} bin/golangci-lint
bin/golangci-lint-${GOLANGCI_VERSION}:
@mkdir -p bin
curl -sfL https://install.goreleaser.com/github.com/golangci/golangci-lint.sh | bash -s -- -b ./bin/ v${GOLANGCI_VERSION}
@mv bin/golangci-lint $@
.PHONY: lint
lint: bin/golangci-lint ## Run linter
bin/golangci-lint run
.PHONY: fix
fix: bin/golangci-lint ## Fix lint violations
bin/golangci-lint run --fix
# Add custom targets here
-include custom.mk
.PHONY: list
list: ## List all make targets
@${MAKE} -pRrn : -f $(MAKEFILE_LIST) 2>/dev/null | awk -v RS= -F: '/^# File/,/^# Finished Make data base/ {if ($$1 !~ "^[#.]") {print $$1}}' | egrep -v -e '^[^[:alnum:]]' -e '^$@$$' | sort
.PHONY: help
.DEFAULT_GOAL := help
help:
@grep -h -E '^[a-zA-Z_-]+:.*?## .*$$' $(MAKEFILE_LIST) | awk 'BEGIN {FS = ":.*?## "}; {printf "\033[36m%-30s\033[0m %s\n", $$1, $$2}'
# Variable outputting/exporting rules
var-%: ; @echo $($*)
varexport-%: ; @echo $*=$($*)

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@ -1,6 +1,13 @@
![viper logo](https://cloud.githubusercontent.com/assets/173412/10886745/998df88a-8151-11e5-9448-4736db51020d.png) ![Viper](.github/logo.png?raw=true)
Go configuration with fangs! [![Mentioned in Awesome Go](https://awesome.re/mentioned-badge-flat.svg)](https://github.com/avelino/awesome-go#configuration)
[![GitHub Workflow Status](https://img.shields.io/github/workflow/status/spf13/viper/CI?style=flat-square)](https://github.com/spf13/viper/actions?query=workflow%3ACI)
[![Join the chat at https://gitter.im/spf13/viper](https://badges.gitter.im/Join%20Chat.svg)](https://gitter.im/spf13/viper?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
[![Go Report Card](https://goreportcard.com/badge/github.com/spf13/viper?style=flat-square)](https://goreportcard.com/report/github.com/spf13/viper)
[![go.dev reference](https://img.shields.io/badge/go.dev-reference-007d9c?logo=go&logoColor=white&style=flat-square)](https://pkg.go.dev/mod/github.com/spf13/viper)
**Go configuration with fangs!**
Many Go projects are built using Viper including: Many Go projects are built using Viper including:
@ -12,8 +19,14 @@ Many Go projects are built using Viper including:
* [BloomApi](https://www.bloomapi.com/) * [BloomApi](https://www.bloomapi.com/)
* [doctl](https://github.com/digitalocean/doctl) * [doctl](https://github.com/digitalocean/doctl)
* [Clairctl](https://github.com/jgsqware/clairctl) * [Clairctl](https://github.com/jgsqware/clairctl)
* [Mercure](https://mercure.rocks)
[![Build Status](https://travis-ci.org/spf13/viper.svg)](https://travis-ci.org/spf13/viper) [![Join the chat at https://gitter.im/spf13/viper](https://badges.gitter.im/Join%20Chat.svg)](https://gitter.im/spf13/viper?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge) [![GoDoc](https://godoc.org/github.com/spf13/viper?status.svg)](https://godoc.org/github.com/spf13/viper)
## Install
```console
go get github.com/spf13/viper
```
## What is Viper? ## What is Viper?
@ -23,7 +36,7 @@ to work within an application, and can handle all types of configuration needs
and formats. It supports: and formats. It supports:
* setting defaults * setting defaults
* reading from JSON, TOML, YAML, HCL, and Java properties config files * reading from JSON, TOML, YAML, HCL, envfile and Java properties config files
* live watching and re-reading of config files (optional) * live watching and re-reading of config files (optional)
* reading from environment variables * reading from environment variables
* reading from remote config systems (etcd or Consul), and watching changes * reading from remote config systems (etcd or Consul), and watching changes
@ -31,8 +44,8 @@ and formats. It supports:
* reading from buffer * reading from buffer
* setting explicit values * setting explicit values
Viper can be thought of as a registry for all of your applications Viper can be thought of as a registry for all of your applications configuration needs.
configuration needs.
## Why Viper? ## Why Viper?
@ -42,34 +55,31 @@ Viper is here to help with that.
Viper does the following for you: Viper does the following for you:
1. Find, load, and unmarshal a configuration file in JSON, TOML, YAML, HCL, or Java properties formats. 1. Find, load, and unmarshal a configuration file in JSON, TOML, YAML, HCL, INI, envfile or Java properties formats.
2. Provide a mechanism to set default values for your different 2. Provide a mechanism to set default values for your different configuration options.
configuration options. 3. Provide a mechanism to set override values for options specified through command line flags.
3. Provide a mechanism to set override values for options specified through 4. Provide an alias system to easily rename parameters without breaking existing code.
command line flags. 5. Make it easy to tell the difference between when a user has provided a command line or config file which is the same as the default.
4. Provide an alias system to easily rename parameters without breaking existing
code.
5. Make it easy to tell the difference between when a user has provided a
command line or config file which is the same as the default.
Viper uses the following precedence order. Each item takes precedence over the Viper uses the following precedence order. Each item takes precedence over the item below it:
item below it:
* explicit call to Set * explicit call to `Set`
* flag * flag
* env * env
* config * config
* key/value store * key/value store
* default * default
Viper configuration keys are case insensitive. **Important:** Viper configuration keys are case insensitive.
There are ongoing discussions about making that optional.
## Putting Values into Viper ## Putting Values into Viper
### Establishing Defaults ### Establishing Defaults
A good configuration system will support default values. A default value is not A good configuration system will support default values. A default value is not
required for a key, but it’s useful in the event that a key hasn’t been set via required for a key, but it’s useful in the event that a key hasn't been set via
config file, environment variable, remote configuration or flag. config file, environment variable, remote configuration or flag.
Examples: Examples:
@ -83,7 +93,7 @@ viper.SetDefault("Taxonomies", map[string]string{"tag": "tags", "category": "cat
### Reading Config Files ### Reading Config Files
Viper requires minimal configuration so it knows where to look for config files. Viper requires minimal configuration so it knows where to look for config files.
Viper supports JSON, TOML, YAML, HCL, and Java Properties files. Viper can search multiple paths, but Viper supports JSON, TOML, YAML, HCL, INI, envfile and Java Properties files. Viper can search multiple paths, but
currently a single Viper instance only supports a single configuration file. currently a single Viper instance only supports a single configuration file.
Viper does not default to any configuration search paths leaving defaults decision Viper does not default to any configuration search paths leaving defaults decision
to an application. to an application.
@ -94,6 +104,7 @@ where a configuration file is expected.
```go ```go
viper.SetConfigName("config") // name of config file (without extension) viper.SetConfigName("config") // name of config file (without extension)
viper.SetConfigType("yaml") // REQUIRED if the config file does not have the extension in the name
viper.AddConfigPath("/etc/appname/") // path to look for the config file in viper.AddConfigPath("/etc/appname/") // path to look for the config file in
viper.AddConfigPath("$HOME/.appname") // call multiple times to add many search paths viper.AddConfigPath("$HOME/.appname") // call multiple times to add many search paths
viper.AddConfigPath(".") // optionally look for config in the working directory viper.AddConfigPath(".") // optionally look for config in the working directory
@ -103,6 +114,44 @@ if err != nil { // Handle errors reading the config file
} }
``` ```
You can handle the specific case where no config file is found like this:
```go
if err := viper.ReadInConfig(); err != nil {
if _, ok := err.(viper.ConfigFileNotFoundError); ok {
// Config file not found; ignore error if desired
} else {
// Config file was found but another error was produced
}
}
// Config file found and successfully parsed
```
*NOTE [since 1.6]:* You can also have a file without an extension and specify the format programmaticaly. For those configuration files that lie in the home of the user without any extension like `.bashrc`
### Writing Config Files
Reading from config files is useful, but at times you want to store all modifications made at run time.
For that, a bunch of commands are available, each with its own purpose:
* WriteConfig - writes the current viper configuration to the predefined path, if exists. Errors if no predefined path. Will overwrite the current config file, if it exists.
* SafeWriteConfig - writes the current viper configuration to the predefined path. Errors if no predefined path. Will not overwrite the current config file, if it exists.
* WriteConfigAs - writes the current viper configuration to the given filepath. Will overwrite the given file, if it exists.
* SafeWriteConfigAs - writes the current viper configuration to the given filepath. Will not overwrite the given file, if it exists.
As a rule of the thumb, everything marked with safe won't overwrite any file, but just create if not existent, whilst the default behavior is to create or truncate.
A small examples section:
```go
viper.WriteConfig() // writes current config to predefined path set by 'viper.AddConfigPath()' and 'viper.SetConfigName'
viper.SafeWriteConfig()
viper.WriteConfigAs("/path/to/my/.config")
viper.SafeWriteConfigAs("/path/to/my/.config") // will error since it has already been written
viper.SafeWriteConfigAs("/path/to/my/.other_config")
```
### Watching and re-reading config files ### Watching and re-reading config files
Viper supports the ability to have your application live read a config file while running. Viper supports the ability to have your application live read a config file while running.
@ -179,13 +228,14 @@ viper.GetBool("verbose") // true
### Working with Environment Variables ### Working with Environment Variables
Viper has full support for environment variables. This enables 12 factor Viper has full support for environment variables. This enables 12 factor
applications out of the box. There are four methods that exist to aid working applications out of the box. There are five methods that exist to aid working
with ENV: with ENV:
* `AutomaticEnv()` * `AutomaticEnv()`
* `BindEnv(string...) : error` * `BindEnv(string...) : error`
* `SetEnvPrefix(string)` * `SetEnvPrefix(string)`
* `SetEnvKeyReplacer(string...) *strings.Replacer` * `SetEnvKeyReplacer(string...) *strings.Replacer`
* `AllowEmptyEnv(bool)`
_When working with ENV variables, it’s important to recognize that Viper _When working with ENV variables, it’s important to recognize that Viper
treats ENV variables as case sensitive._ treats ENV variables as case sensitive._
@ -198,9 +248,9 @@ prefix.
`BindEnv` takes one or two parameters. The first parameter is the key name, the `BindEnv` takes one or two parameters. The first parameter is the key name, the
second is the name of the environment variable. The name of the environment second is the name of the environment variable. The name of the environment
variable is case sensitive. If the ENV variable name is not provided, then variable is case sensitive. If the ENV variable name is not provided, then
Viper will automatically assume that the key name matches the ENV variable name, Viper will automatically assume that the ENV variable matches the following format: prefix + "_" + the key name in ALL CAPS. When you explicitly provide the ENV variable name (the second parameter),
but the ENV variable is IN ALL CAPS. When you explicitly provide the ENV it **does not** automatically add the prefix. For example if the second parameter is "id",
variable name, it **does not** automatically add the prefix. Viper will look for the ENV variable "ID".
One important thing to recognize when working with ENV variables is that the One important thing to recognize when working with ENV variables is that the
value will be read each time it is accessed. Viper does not fix the value when value will be read each time it is accessed. Viper does not fix the value when
@ -217,6 +267,13 @@ keys to an extent. This is useful if you want to use `-` or something in your
`Get()` calls, but want your environmental variables to use `_` delimiters. An `Get()` calls, but want your environmental variables to use `_` delimiters. An
example of using it can be found in `viper_test.go`. example of using it can be found in `viper_test.go`.
Alternatively, you can use `EnvKeyReplacer` with `NewWithOptions` factory function.
Unlike `SetEnvKeyReplacer`, it accepts a `StringReplacer` interface allowing you to write custom string replacing logic.
By default empty environment variables are considered unset and will fall back to
the next configuration source. To treat empty environment variables as set, use
the `AllowEmptyEnv` method.
#### Env example #### Env example
```go ```go
@ -341,12 +398,12 @@ package:
`import _ "github.com/spf13/viper/remote"` `import _ "github.com/spf13/viper/remote"`
Viper will read a config string (as JSON, TOML, YAML or HCL) retrieved from a path Viper will read a config string (as JSON, TOML, YAML, HCL or envfile) retrieved from a path
in a Key/Value store such as etcd or Consul. These values take precedence over in a Key/Value store such as etcd or Consul. These values take precedence over
default values, but are overridden by configuration values retrieved from disk, default values, but are overridden by configuration values retrieved from disk,
flags, or environment variables. flags, or environment variables.
Viper uses [crypt](https://github.com/xordataexchange/crypt) to retrieve Viper uses [crypt](https://github.com/bketelsen/crypt) to retrieve
configuration from the K/V store, which means that you can store your configuration from the K/V store, which means that you can store your
configuration values encrypted and have them automatically decrypted if you have configuration values encrypted and have them automatically decrypted if you have
the correct gpg keyring. Encryption is optional. the correct gpg keyring. Encryption is optional.
@ -358,7 +415,7 @@ independently of it.
K/V store. `crypt` defaults to etcd on http://127.0.0.1:4001. K/V store. `crypt` defaults to etcd on http://127.0.0.1:4001.
```bash ```bash
$ go get github.com/xordataexchange/crypt/bin/crypt $ go get github.com/bketelsen/crypt/bin/crypt
$ crypt set -plaintext /config/hugo.json /Users/hugo/settings/config.json $ crypt set -plaintext /config/hugo.json /Users/hugo/settings/config.json
``` ```
@ -376,12 +433,12 @@ how to use Consul.
#### etcd #### etcd
```go ```go
viper.AddRemoteProvider("etcd", "http://127.0.0.1:4001","/config/hugo.json") viper.AddRemoteProvider("etcd", "http://127.0.0.1:4001","/config/hugo.json")
viper.SetConfigType("json") // because there is no file extension in a stream of bytes, supported extensions are "json", "toml", "yaml", "yml", "properties", "props", "prop" viper.SetConfigType("json") // because there is no file extension in a stream of bytes, supported extensions are "json", "toml", "yaml", "yml", "properties", "props", "prop", "env", "dotenv"
err := viper.ReadRemoteConfig() err := viper.ReadRemoteConfig()
``` ```
#### Consul #### Consul
You need to set a key to Consul key/value storage with JSON value containing your desired config. You need to set a key to Consul key/value storage with JSON value containing your desired config.
For example, create a Consul key/value store key `MY_CONSUL_KEY` with value: For example, create a Consul key/value store key `MY_CONSUL_KEY` with value:
```json ```json
@ -400,11 +457,21 @@ fmt.Println(viper.Get("port")) // 8080
fmt.Println(viper.Get("hostname")) // myhostname.com fmt.Println(viper.Get("hostname")) // myhostname.com
``` ```
#### Firestore
```go
viper.AddRemoteProvider("firestore", "google-cloud-project-id", "collection/document")
viper.SetConfigType("json") // Config's format: "json", "toml", "yaml", "yml"
err := viper.ReadRemoteConfig()
```
Of course, you're allowed to use `SecureRemoteProvider` also
### Remote Key/Value Store Example - Encrypted ### Remote Key/Value Store Example - Encrypted
```go ```go
viper.AddSecureRemoteProvider("etcd","http://127.0.0.1:4001","/config/hugo.json","/etc/secrets/mykeyring.gpg") viper.AddSecureRemoteProvider("etcd","http://127.0.0.1:4001","/config/hugo.json","/etc/secrets/mykeyring.gpg")
viper.SetConfigType("json") // because there is no file extension in a stream of bytes, supported extensions are "json", "toml", "yaml", "yml", "properties", "props", "prop" viper.SetConfigType("json") // because there is no file extension in a stream of bytes, supported extensions are "json", "toml", "yaml", "yml", "properties", "props", "prop", "env", "dotenv"
err := viper.ReadRemoteConfig() err := viper.ReadRemoteConfig()
``` ```
@ -415,7 +482,7 @@ err := viper.ReadRemoteConfig()
var runtime_viper = viper.New() var runtime_viper = viper.New()
runtime_viper.AddRemoteProvider("etcd", "http://127.0.0.1:4001", "/config/hugo.yml") runtime_viper.AddRemoteProvider("etcd", "http://127.0.0.1:4001", "/config/hugo.yml")
runtime_viper.SetConfigType("yaml") // because there is no file extension in a stream of bytes, supported extensions are "json", "toml", "yaml", "yml", "properties", "props", "prop" runtime_viper.SetConfigType("yaml") // because there is no file extension in a stream of bytes, supported extensions are "json", "toml", "yaml", "yml", "properties", "props", "prop", "env", "dotenv"
// read from remote config the first time. // read from remote config the first time.
err := runtime_viper.ReadRemoteConfig() err := runtime_viper.ReadRemoteConfig()
@ -451,6 +518,7 @@ The following functions and methods exist:
* `GetBool(key string) : bool` * `GetBool(key string) : bool`
* `GetFloat64(key string) : float64` * `GetFloat64(key string) : float64`
* `GetInt(key string) : int` * `GetInt(key string) : int`
* `GetIntSlice(key string) : []int`
* `GetString(key string) : string` * `GetString(key string) : string`
* `GetStringMap(key string) : map[string]interface{}` * `GetStringMap(key string) : map[string]interface{}`
* `GetStringMapString(key string) : map[string]string` * `GetStringMapString(key string) : map[string]string`
@ -606,30 +674,89 @@ type config struct {
var C config var C config
err := Unmarshal(&C) err := viper.Unmarshal(&C)
if err != nil { if err != nil {
t.Fatalf("unable to decode into struct, %v", err) t.Fatalf("unable to decode into struct, %v", err)
} }
``` ```
If you want to unmarshal configuration where the keys themselves contain dot (the default key delimiter),
you have to change the delimiter:
```go
v := viper.NewWithOptions(viper.KeyDelimiter("::"))
v.SetDefault("chart::values", map[string]interface{}{
"ingress": map[string]interface{}{
"annotations": map[string]interface{}{
"traefik.frontend.rule.type": "PathPrefix",
"traefik.ingress.kubernetes.io/ssl-redirect": "true",
},
},
})
type config struct {
Chart struct{
Values map[string]interface{}
}
}
var C config
v.Unmarshal(&C)
```
Viper also supports unmarshaling into embedded structs:
```go
/*
Example config:
module:
enabled: true
token: 89h3f98hbwf987h3f98wenf89ehf
*/
type config struct {
Module struct {
Enabled bool
moduleConfig `mapstructure:",squash"`
}
}
// moduleConfig could be in a module specific package
type moduleConfig struct {
Token string
}
var C config
err := viper.Unmarshal(&C)
if err != nil {
t.Fatalf("unable to decode into struct, %v", err)
}
```
Viper uses [github.com/mitchellh/mapstructure](https://github.com/mitchellh/mapstructure) under the hood for unmarshaling values which uses `mapstructure` tags by default.
### Marshalling to string ### Marshalling to string
You may need to marhsal all the settings held in viper into a string rather than write them to a file. You may need to marshal all the settings held in viper into a string rather than write them to a file.
You can use your favorite format's marshaller with the config returned by `AllSettings()`. You can use your favorite format's marshaller with the config returned by `AllSettings()`.
```go ```go
import ( import (
yaml "gopkg.in/yaml.v2" yaml "gopkg.in/yaml.v2"
// ... // ...
) )
func yamlStringSettings() string { func yamlStringSettings() string {
c := viper.AllSettings() c := viper.AllSettings()
bs, err := yaml.Marshal(c) bs, err := yaml.Marshal(c)
if err != nil { if err != nil {
t.Fatalf("unable to marshal config to YAML: %v", err) log.Fatalf("unable to marshal config to YAML: %v", err)
} }
return string(bs) return string(bs)
} }
``` ```
@ -667,13 +794,6 @@ different vipers.
## Q & A ## Q & A
Q: Why not INI files?
A: Ini files are pretty awful. There’s no standard format, and they are hard to
validate. Viper is designed to work with JSON, TOML or YAML files. If someone
really wants to add this feature, I’d be happy to merge it. It’s easy to specify
which formats your application will permit.
Q: Why is it called “Viper”? Q: Why is it called “Viper”?
A: Viper is designed to be a [companion](http://en.wikipedia.org/wiki/Viper_(G.I._Joe)) A: Viper is designed to be a [companion](http://en.wikipedia.org/wiki/Viper_(G.I._Joe))

2
flags.go
View file

@ -36,7 +36,7 @@ type pflagValue struct {
flag *pflag.Flag flag *pflag.Flag
} }
// HasChanges returns whether the flag has changes or not. // HasChanged returns whether the flag has changes or not.
func (p pflagValue) HasChanged() bool { func (p pflagValue) HasChanged() bool {
return p.flag.Changed return p.flag.Changed
} }

40
go.mod
View file

@ -1,18 +1,40 @@
module github.com/spf13/viper module github.com/spf13/viper
go 1.12
require ( require (
github.com/bketelsen/crypt v0.0.3-0.20200106085610-5cbc8cc4026c
github.com/coreos/bbolt v1.3.2 // indirect
github.com/coreos/go-systemd v0.0.0-20190321100706-95778dfbb74e // indirect
github.com/coreos/pkg v0.0.0-20180928190104-399ea9e2e55f // indirect
github.com/dgrijalva/jwt-go v3.2.0+incompatible // indirect
github.com/fsnotify/fsnotify v1.4.7 github.com/fsnotify/fsnotify v1.4.7
github.com/gogo/protobuf v1.2.1 // indirect
github.com/golang/groupcache v0.0.0-20190129154638-5b532d6fd5ef // indirect
github.com/gorilla/websocket v1.4.2 // indirect
github.com/grpc-ecosystem/go-grpc-middleware v1.0.0 // indirect
github.com/grpc-ecosystem/go-grpc-prometheus v1.2.0 // indirect
github.com/grpc-ecosystem/grpc-gateway v1.9.0 // indirect
github.com/hashicorp/hcl v1.0.0 github.com/hashicorp/hcl v1.0.0
github.com/magiconair/properties v1.8.0 github.com/jonboulle/clockwork v0.1.0 // indirect
github.com/mitchellh/mapstructure v1.0.0 github.com/magiconair/properties v1.8.1
github.com/mitchellh/mapstructure v1.1.2
github.com/pelletier/go-toml v1.2.0 github.com/pelletier/go-toml v1.2.0
github.com/pmezard/go-difflib v1.0.0 // indirect github.com/prometheus/client_golang v0.9.3 // indirect
github.com/smartystreets/goconvey v1.6.4 // indirect
github.com/soheilhy/cmux v0.1.4 // indirect
github.com/spf13/afero v1.1.2 github.com/spf13/afero v1.1.2
github.com/spf13/cast v1.2.0 github.com/spf13/cast v1.3.0
github.com/spf13/jwalterweatherman v1.0.0 github.com/spf13/jwalterweatherman v1.0.0
github.com/spf13/pflag v1.0.2 github.com/spf13/pflag v1.0.3
github.com/stretchr/testify v1.2.2 github.com/stretchr/testify v1.3.0
golang.org/x/sys v0.0.0-20180906133057-8cf3aee42992 // indirect github.com/subosito/gotenv v1.2.0
golang.org/x/text v0.3.0 // indirect github.com/tmc/grpc-websocket-proxy v0.0.0-20190109142713-0ad062ec5ee5 // indirect
gopkg.in/yaml.v2 v2.2.1 github.com/xiang90/probing v0.0.0-20190116061207-43a291ad63a2 // indirect
go.etcd.io/bbolt v1.3.2 // indirect
go.uber.org/atomic v1.4.0 // indirect
go.uber.org/multierr v1.1.0 // indirect
go.uber.org/zap v1.10.0 // indirect
gopkg.in/ini.v1 v1.51.0
gopkg.in/yaml.v2 v2.2.4
) )

379
go.sum
View file

@ -1,31 +1,388 @@
cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
cloud.google.com/go v0.34.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
cloud.google.com/go v0.38.0/go.mod h1:990N+gfupTy94rShfmMCWGDn0LpTmnzTp2qbd1dvSRU=
cloud.google.com/go v0.44.1/go.mod h1:iSa0KzasP4Uvy3f1mN/7PiObzGgflwredwwASm/v6AU=
cloud.google.com/go v0.44.2/go.mod h1:60680Gw3Yr4ikxnPRS/oxxkBccT6SA1yMk63TGekxKY=
cloud.google.com/go v0.45.1/go.mod h1:RpBamKRgapWJb87xiFSdk4g1CME7QZg3uwTez+TSTjc=
cloud.google.com/go v0.46.3 h1:AVXDdKsrtX33oR9fbCMu/+c1o8Ofjq6Ku/MInaLVg5Y=
cloud.google.com/go v0.46.3/go.mod h1:a6bKKbmY7er1mI7TEI4lsAkts/mkhTSZK8w33B4RAg0=
cloud.google.com/go/bigquery v1.0.1 h1:hL+ycaJpVE9M7nLoiXb/Pn10ENE2u+oddxbD8uu0ZVU=
cloud.google.com/go/bigquery v1.0.1/go.mod h1:i/xbL2UlR5RvWAURpBYZTtm/cXjCha9lbfbpx4poX+o=
cloud.google.com/go/datastore v1.0.0 h1:Kt+gOPPp2LEPWp8CSfxhsM8ik9CcyE/gYu+0r+RnZvM=
cloud.google.com/go/datastore v1.0.0/go.mod h1:LXYbyblFSglQ5pkeyhO+Qmw7ukd3C+pD7TKLgZqpHYE=
cloud.google.com/go/firestore v1.1.0 h1:9x7Bx0A9R5/M9jibeJeZWqjeVEIxYW9fZYqB9a70/bY=
cloud.google.com/go/firestore v1.1.0/go.mod h1:ulACoGHTpvq5r8rxGJ4ddJZBZqakUQqClKRT5SZwBmk=
cloud.google.com/go/pubsub v1.0.1 h1:W9tAK3E57P75u0XLLR82LZyw8VpAnhmyTOxW9qzmyj8=
cloud.google.com/go/pubsub v1.0.1/go.mod h1:R0Gpsv3s54REJCy4fxDixWD93lHJMoZTyQ2kNxGRt3I=
cloud.google.com/go/storage v1.0.0 h1:VV2nUM3wwLLGh9lSABFgZMjInyUbJeaRSE64WuAIQ+4=
cloud.google.com/go/storage v1.0.0/go.mod h1:IhtSnM/ZTZV8YYJWCY8RULGVqBDmpoyjwiyrjsg+URw=
dmitri.shuralyov.com/gpu/mtl v0.0.0-20190408044501-666a987793e9/go.mod h1:H6x//7gZCb22OMCxBHrMx7a5I7Hp++hsVxbQ4BYO7hU=
github.com/BurntSushi/toml v0.3.1 h1:WXkYYl6Yr3qBf1K79EBnL4mak0OimBfB0XUf9Vl28OQ=
github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
github.com/BurntSushi/xgb v0.0.0-20160522181843-27f122750802/go.mod h1:IVnqGOEym/WlBOVXweHU+Q+/VP0lqqI8lqeDx9IjBqo=
github.com/OneOfOne/xxhash v1.2.2/go.mod h1:HSdplMjZKSmBqAxg5vPj2TmRDmfkzw+cTzAElWljhcU=
github.com/alecthomas/template v0.0.0-20160405071501-a0175ee3bccc/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc=
github.com/alecthomas/units v0.0.0-20151022065526-2efee857e7cf/go.mod h1:ybxpYRFXyAe+OPACYpWeL0wqObRcbAqCMya13uyzqw0=
github.com/armon/circbuf v0.0.0-20150827004946-bbbad097214e/go.mod h1:3U/XgcO3hCbHZ8TKRvWD2dDTCfh9M9ya+I9JpbB7O8o=
github.com/armon/go-metrics v0.0.0-20180917152333-f0300d1749da h1:8GUt8eRujhVEGZFFEjBj46YV4rDjvGrNxb0KMWYkL2I=
github.com/armon/go-metrics v0.0.0-20180917152333-f0300d1749da/go.mod h1:Q73ZrmVTwzkszR9V5SSuryQ31EELlFMUz1kKyl939pY=
github.com/armon/go-radix v0.0.0-20180808171621-7fddfc383310/go.mod h1:ufUuZ+zHj4x4TnLV4JWEpy2hxWSpsRywHrMgIH9cCH8=
github.com/beorn7/perks v0.0.0-20180321164747-3a771d992973/go.mod h1:Dwedo/Wpr24TaqPxmxbtue+5NUziq4I4S80YR8gNf3Q=
github.com/beorn7/perks v1.0.0 h1:HWo1m869IqiPhD389kmkxeTalrjNbbJTC8LXupb+sl0=
github.com/beorn7/perks v1.0.0/go.mod h1:KWe93zE9D1o94FZ5RNwFwVgaQK1VOXiVxmqh+CedLV8=
github.com/bgentry/speakeasy v0.1.0/go.mod h1:+zsyZBPWlz7T6j88CTgSN5bM796AkVf0kBD4zp0CCIs=
github.com/bketelsen/crypt v0.0.3-0.20200106085610-5cbc8cc4026c h1:+0HFd5KSZ/mm3JmhmrDukiId5iR6w4+BdFtfSy4yWIc=
github.com/bketelsen/crypt v0.0.3-0.20200106085610-5cbc8cc4026c/go.mod h1:MKsuJmJgSg28kpZDP6UIiPt0e0Oz0kqKNGyRaWEPv84=
github.com/cespare/xxhash v1.1.0/go.mod h1:XrSqR1VqqWfGrhpAt58auRo0WTKS1nRRg3ghfAqPWnc=
github.com/client9/misspell v0.3.4/go.mod h1:qj6jICC3Q7zFZvVWo7KLAzC3yx5G7kyvSDkc90ppPyw=
github.com/coreos/bbolt v1.3.2 h1:wZwiHHUieZCquLkDL0B8UhzreNWsPHooDAG3q34zk0s=
github.com/coreos/bbolt v1.3.2/go.mod h1:iRUV2dpdMOn7Bo10OQBFzIJO9kkE559Wcmn+qkEiiKk=
github.com/coreos/etcd v3.3.13+incompatible h1:8F3hqu9fGYLBifCmRCJsicFqDx/D68Rt3q1JMazcgBQ=
github.com/coreos/etcd v3.3.13+incompatible/go.mod h1:uF7uidLiAD3TWHmW31ZFd/JWoc32PjwdhPthX9715RE=
github.com/coreos/go-semver v0.3.0 h1:wkHLiw0WNATZnSG7epLsujiMCgPAc9xhjJ4tgnAxmfM=
github.com/coreos/go-semver v0.3.0/go.mod h1:nnelYz7RCh+5ahJtPPxZlU+153eP4D4r3EedlOD2RNk=
github.com/coreos/go-systemd v0.0.0-20190321100706-95778dfbb74e h1:Wf6HqHfScWJN9/ZjdUKyjop4mf3Qdd+1TvvltAvM3m8=
github.com/coreos/go-systemd v0.0.0-20190321100706-95778dfbb74e/go.mod h1:F5haX7vjVVG0kc13fIWeqUViNPyEJxv/OmvnBo0Yme4=
github.com/coreos/pkg v0.0.0-20180928190104-399ea9e2e55f h1:lBNOc5arjvs8E5mO2tbpBpLoyyu8B6e44T7hJy6potg=
github.com/coreos/pkg v0.0.0-20180928190104-399ea9e2e55f/go.mod h1:E3G3o1h8I7cfcXa63jLwjI0eiQQMgzzUDFVpN/nH/eA=
github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c= github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38= github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
github.com/dgrijalva/jwt-go v3.2.0+incompatible h1:7qlOGliEKZXTDg6OTjfoBKDXWrumCAMpl/TFQ4/5kLM=
github.com/dgrijalva/jwt-go v3.2.0+incompatible/go.mod h1:E3ru+11k8xSBh+hMPgOLZmtrrCbhqsmaPHjLKYnJCaQ=
github.com/dgryski/go-sip13 v0.0.0-20181026042036-e10d5fee7954/go.mod h1:vAd38F8PWV+bWy6jNmig1y/TA+kYO4g3RSRF0IAv0no=
github.com/fatih/color v1.7.0/go.mod h1:Zm6kSWBoL9eyXnKyktHP6abPY2pDugNf5KwzbycvMj4=
github.com/fsnotify/fsnotify v1.4.7 h1:IXs+QLmnXW2CcXuY+8Mzv/fWEsPGWxqefPtCP5CnV9I= github.com/fsnotify/fsnotify v1.4.7 h1:IXs+QLmnXW2CcXuY+8Mzv/fWEsPGWxqefPtCP5CnV9I=
github.com/fsnotify/fsnotify v1.4.7/go.mod h1:jwhsz4b93w/PPRr/qN1Yymfu8t87LnFCMoQvtojpjFo= github.com/fsnotify/fsnotify v1.4.7/go.mod h1:jwhsz4b93w/PPRr/qN1Yymfu8t87LnFCMoQvtojpjFo=
github.com/ghodss/yaml v1.0.0 h1:wQHKEahhL6wmXdzwWG11gIVCkOv05bNOh+Rxn0yngAk=
github.com/ghodss/yaml v1.0.0/go.mod h1:4dBDuWmgqj2HViK6kFavaiC9ZROes6MMH2rRYeMEF04=
github.com/go-gl/glfw v0.0.0-20190409004039-e6da0acd62b1/go.mod h1:vR7hzQXu2zJy9AVAgeJqvqgH9Q5CA+iKCZ2gyEVpxRU=
github.com/go-kit/kit v0.8.0/go.mod h1:xBxKIO96dXMWWy0MnWVtmwkA9/13aqxPnvrjFYMA2as=
github.com/go-logfmt/logfmt v0.3.0/go.mod h1:Qt1PoO58o5twSAckw1HlFXLmHsOX5/0LbT9GBnD5lWE=
github.com/go-logfmt/logfmt v0.4.0/go.mod h1:3RMwSq7FuexP4Kalkev3ejPJsZTpXXBr9+V4qmtdjCk=
github.com/go-stack/stack v1.8.0/go.mod h1:v0f6uXyyMGvRgIKkXu+yp6POWl0qKG85gN/melR3HDY=
github.com/gogo/protobuf v1.1.1/go.mod h1:r8qH/GZQm5c6nD/R0oafs1akxWv10x8SbQlK7atdtwQ=
github.com/gogo/protobuf v1.2.1 h1:/s5zKNz0uPFCZ5hddgPdo2TK2TVrUNMn0OOX8/aZMTE=
github.com/gogo/protobuf v1.2.1/go.mod h1:hp+jE20tsWTFYpLwKvXlhS1hjn+gTNwPg2I6zVXpSg4=
github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b h1:VKtxabqXZkF25pY9ekfRL6a582T4P37/31XEstQ5p58=
github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b/go.mod h1:SBH7ygxi8pfUlaOkMMuAQtPIUF8ecWP5IEl/CR7VP2Q=
github.com/golang/groupcache v0.0.0-20190129154638-5b532d6fd5ef h1:veQD95Isof8w9/WXiA+pa3tz3fJXkt5B7QaRBrM62gk=
github.com/golang/groupcache v0.0.0-20190129154638-5b532d6fd5ef/go.mod h1:cIg4eruTrX1D+g88fzRXU5OdNfaM+9IcxsU14FzY7Hc=
github.com/golang/mock v1.1.1/go.mod h1:oTYuIxOrZwtPieC+H1uAHpcLFnEyAGVDL/k47Jfbm0A=
github.com/golang/mock v1.2.0/go.mod h1:oTYuIxOrZwtPieC+H1uAHpcLFnEyAGVDL/k47Jfbm0A=
github.com/golang/mock v1.3.1/go.mod h1:sBzyDLLjw3U8JLTeZvSv8jJB+tU5PVekmnlKIyFUx0Y=
github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
github.com/golang/protobuf v1.3.1 h1:YF8+flBXS5eO826T4nzqPrxfhQThhXl0YzfuUPu4SBg=
github.com/golang/protobuf v1.3.1/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
github.com/golang/protobuf v1.3.2 h1:6nsPYzhq5kReh6QImI3k5qWzO4PEbvbIW2cwSfR/6xs=
github.com/golang/protobuf v1.3.2/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
github.com/google/btree v0.0.0-20180813153112-4030bb1f1f0c/go.mod h1:lNA+9X1NB3Zf8V7Ke586lFgjr2dZNuvo3lPJSGZ5JPQ=
github.com/google/btree v1.0.0 h1:0udJVsspx3VBr5FwtLhQQtuAsVc79tTq0ocGIPAU6qo=
github.com/google/btree v1.0.0/go.mod h1:lNA+9X1NB3Zf8V7Ke586lFgjr2dZNuvo3lPJSGZ5JPQ=
github.com/google/go-cmp v0.2.0/go.mod h1:oXzfMopK8JAjlY9xF4vHSVASa0yLyX7SntLO5aqRK0M=
github.com/google/go-cmp v0.3.0 h1:crn/baboCvb5fXaQ0IJ1SGTsTVrWpDsCWC8EGETZijY=
github.com/google/go-cmp v0.3.0/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMywk6iLU=
github.com/google/martian v2.1.0+incompatible h1:/CP5g8u/VJHijgedC/Legn3BAbAaWPgecwXBIDzw5no=
github.com/google/martian v2.1.0+incompatible/go.mod h1:9I4somxYTbIHy5NJKHRl3wXiIaQGbYVAs8BPL6v8lEs=
github.com/google/pprof v0.0.0-20181206194817-3ea8567a2e57/go.mod h1:zfwlbNMJ+OItoe0UupaVj+oy1omPYYDuagoSzA8v9mc=
github.com/google/pprof v0.0.0-20190515194954-54271f7e092f/go.mod h1:zfwlbNMJ+OItoe0UupaVj+oy1omPYYDuagoSzA8v9mc=
github.com/google/renameio v0.1.0/go.mod h1:KWCgfxg9yswjAJkECMjeO8J8rahYeXnNhOm40UhjYkI=
github.com/googleapis/gax-go/v2 v2.0.4/go.mod h1:0Wqv26UfaUD9n4G6kQubkQ+KchISgw+vpHVxEJEs9eg=
github.com/googleapis/gax-go/v2 v2.0.5 h1:sjZBwGj9Jlw33ImPtvFviGYvseOtDM7hkSKB7+Tv3SM=
github.com/googleapis/gax-go/v2 v2.0.5/go.mod h1:DWXyrwAJ9X0FpwwEdw+IPEYBICEFu5mhpdKc/us6bOk=
github.com/gopherjs/gopherjs v0.0.0-20181017120253-0766667cb4d1 h1:EGx4pi6eqNxGaHF6qqu48+N2wcFQ5qg5FXgOdqsJ5d8=
github.com/gopherjs/gopherjs v0.0.0-20181017120253-0766667cb4d1/go.mod h1:wJfORRmW1u3UXTncJ5qlYoELFm8eSnnEO6hX4iZ3EWY=
github.com/gorilla/websocket v1.4.2 h1:+/TMaTYc4QFitKJxsQ7Yye35DkWvkdLcvGKqM+x0Ufc=
github.com/gorilla/websocket v1.4.2/go.mod h1:YR8l580nyteQvAITg2hZ9XVh4b55+EU/adAjf1fMHhE=
github.com/grpc-ecosystem/go-grpc-middleware v1.0.0 h1:Iju5GlWwrvL6UBg4zJJt3btmonfrMlCDdsejg4CZE7c=
github.com/grpc-ecosystem/go-grpc-middleware v1.0.0/go.mod h1:FiyG127CGDf3tlThmgyCl78X/SZQqEOJBCDaAfeWzPs=
github.com/grpc-ecosystem/go-grpc-prometheus v1.2.0 h1:Ovs26xHkKqVztRpIrF/92BcuyuQ/YW4NSIpoGtfXNho=
github.com/grpc-ecosystem/go-grpc-prometheus v1.2.0/go.mod h1:8NvIoxWQoOIhqOTXgfV/d3M/q6VIi02HzZEHgUlZvzk=
github.com/grpc-ecosystem/grpc-gateway v1.9.0 h1:bM6ZAFZmc/wPFaRDi0d5L7hGEZEx/2u+Tmr2evNHDiI=
github.com/grpc-ecosystem/grpc-gateway v1.9.0/go.mod h1:vNeuVxBJEsws4ogUvrchl83t/GYV9WGTSLVdBhOQFDY=
github.com/hashicorp/consul/api v1.1.0 h1:BNQPM9ytxj6jbjjdRPioQ94T6YXriSopn0i8COv6SRA=
github.com/hashicorp/consul/api v1.1.0/go.mod h1:VmuI/Lkw1nC05EYQWNKwWGbkg+FbDBtguAZLlVdkD9Q=
github.com/hashicorp/consul/sdk v0.1.1 h1:LnuDWGNsoajlhGyHJvuWW6FVqRl8JOTPqS6CPTsYjhY=
github.com/hashicorp/consul/sdk v0.1.1/go.mod h1:VKf9jXwCTEY1QZP2MOLRhb5i/I/ssyNV1vwHyQBF0x8=
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golang.org/x/tools v0.0.0-20190621195816-6e04913cbbac/go.mod h1:/rFqwRUd4F7ZHNgwSSTFct+R/Kf4OFW1sUzUTQQTgfc=
golang.org/x/tools v0.0.0-20190628153133-6cdbf07be9d0/go.mod h1:/rFqwRUd4F7ZHNgwSSTFct+R/Kf4OFW1sUzUTQQTgfc=
golang.org/x/tools v0.0.0-20190816200558-6889da9d5479/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
golang.org/x/tools v0.0.0-20190911174233-4f2ddba30aff/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
golang.org/x/tools v0.0.0-20191012152004-8de300cfc20a/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
golang.org/x/tools v0.0.0-20191112195655-aa38f8e97acc h1:NCy3Ohtk6Iny5V/reW2Ktypo4zIpWBdRJ1uFMjBxdg8=
golang.org/x/tools v0.0.0-20191112195655-aa38f8e97acc/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
google.golang.org/api v0.4.0/go.mod h1:8k5glujaEP+g9n7WNsDg8QP6cUVNI86fCNMcbazEtwE=
google.golang.org/api v0.7.0/go.mod h1:WtwebWUNSVBH/HAw79HIFXZNqEvBhG+Ra+ax0hx3E3M=
google.golang.org/api v0.8.0/go.mod h1:o4eAsZoiT+ibD93RtjEohWalFOjRDx6CVaqeizhEnKg=
google.golang.org/api v0.9.0/go.mod h1:o4eAsZoiT+ibD93RtjEohWalFOjRDx6CVaqeizhEnKg=
google.golang.org/api v0.13.0 h1:Q3Ui3V3/CVinFWFiW39Iw0kMuVrRzYX0wN6OPFp0lTA=
google.golang.org/api v0.13.0/go.mod h1:iLdEw5Ide6rF15KTC1Kkl0iskquN2gFfn9o9XIsbkAI=
google.golang.org/appengine v1.1.0/go.mod h1:EbEs0AVv82hx2wNQdGPgUI5lhzA/G0D9YwlJXL52JkM=
google.golang.org/appengine v1.4.0/go.mod h1:xpcJRLb0r/rnEns0DIKYYv+WjYCduHsrkT7/EB5XEv4=
google.golang.org/appengine v1.5.0/go.mod h1:xpcJRLb0r/rnEns0DIKYYv+WjYCduHsrkT7/EB5XEv4=
google.golang.org/appengine v1.6.1 h1:QzqyMA1tlu6CgqCDUtU9V+ZKhLFT2dkJuANu5QaxI3I=
google.golang.org/appengine v1.6.1/go.mod h1:i06prIuMbXzDqacNJfV5OdTW448YApPu5ww/cMBSeb0=
google.golang.org/genproto v0.0.0-20180817151627-c66870c02cf8 h1:Nw54tB0rB7hY/N0NQvRW8DG4Yk3Q6T9cu9RcFQDu1tc=
google.golang.org/genproto v0.0.0-20180817151627-c66870c02cf8/go.mod h1:JiN7NxoALGmiZfu7CAH4rXhgtRTLTxftemlI0sWmxmc=
google.golang.org/genproto v0.0.0-20190307195333-5fe7a883aa19/go.mod h1:VzzqZJRnGkLBvHegQrXjBqPurQTc5/KpmUdxsrq26oE=
google.golang.org/genproto v0.0.0-20190418145605-e7d98fc518a7/go.mod h1:VzzqZJRnGkLBvHegQrXjBqPurQTc5/KpmUdxsrq26oE=
google.golang.org/genproto v0.0.0-20190425155659-357c62f0e4bb/go.mod h1:VzzqZJRnGkLBvHegQrXjBqPurQTc5/KpmUdxsrq26oE=
google.golang.org/genproto v0.0.0-20190502173448-54afdca5d873/go.mod h1:VzzqZJRnGkLBvHegQrXjBqPurQTc5/KpmUdxsrq26oE=
google.golang.org/genproto v0.0.0-20190801165951-fa694d86fc64/go.mod h1:DMBHOl98Agz4BDEuKkezgsaosCRResVns1a3J2ZsMNc=
google.golang.org/genproto v0.0.0-20190819201941-24fa4b261c55/go.mod h1:DMBHOl98Agz4BDEuKkezgsaosCRResVns1a3J2ZsMNc=
google.golang.org/genproto v0.0.0-20190911173649-1774047e7e51/go.mod h1:IbNlFCBrqXvoKpeg0TB2l7cyZUmoaFKYIwrEpbDKLA8=
google.golang.org/genproto v0.0.0-20191108220845-16a3f7862a1a h1:Ob5/580gVHBJZgXnff1cZDbG+xLtMVE5mDRTe+nIsX4=
google.golang.org/genproto v0.0.0-20191108220845-16a3f7862a1a/go.mod h1:n3cpQtvxv34hfy77yVDNjmbRyujviMdxYliBSkLhpCc=
google.golang.org/grpc v1.19.0/go.mod h1:mqu4LbDTu4XGKhr4mRzUsmM4RtVoemTSY81AxZiDr8c=
google.golang.org/grpc v1.20.1/go.mod h1:10oTOabMzJvdu6/UiuZezV6QK5dSlG84ov/aaiqXj38=
google.golang.org/grpc v1.21.1 h1:j6XxA85m/6txkUCHvzlV5f+HBNl/1r5cZ2A/3IEFOO8=
google.golang.org/grpc v1.21.1/go.mod h1:oYelfM1adQP15Ek0mdvEgi9Df8B9CZIaU1084ijfRaM=
gopkg.in/alecthomas/kingpin.v2 v2.2.6/go.mod h1:FMv+mEhP44yOT+4EoQTLFTRgOQ1FBLkstjWtayDeSgw=
gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0= gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
gopkg.in/yaml.v2 v2.2.1 h1:mUhvW9EsL+naU5Q3cakzfE91YhliOondGd6ZrsDBHQE= gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127 h1:qIbj1fsPNlZgppZ+VLlY7N33q108Sa+fhmuc+sWQYwY=
gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
gopkg.in/errgo.v2 v2.1.0/go.mod h1:hNsd1EY+bozCKY1Ytp96fpM3vjJbqLJn88ws8XvfDNI=
gopkg.in/ini.v1 v1.51.0 h1:AQvPpx3LzTDM0AjnIRlVFwFFGC+npRopjZxLJj6gdno=
gopkg.in/ini.v1 v1.51.0/go.mod h1:pNLf8WUiyNEtQjuu5G5vTm06TEv9tsIgeAvK8hOrP4k=
gopkg.in/resty.v1 v1.12.0/go.mod h1:mDo4pnntr5jdWRML875a/NmxYqAlA73dVijT2AXvQQo=
gopkg.in/yaml.v2 v2.0.0-20170812160011-eb3733d160e7/go.mod h1:JAlM8MvJe8wmxCU4Bli9HhUf9+ttbYbLASfIpnQbh74=
gopkg.in/yaml.v2 v2.2.1/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI= gopkg.in/yaml.v2 v2.2.1/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
gopkg.in/yaml.v2 v2.2.4 h1:/eiJrUcujPVeJ3xlSWaiNi3uSVmDGBK1pDHUHAnao1I=
gopkg.in/yaml.v2 v2.2.4/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
honnef.co/go/tools v0.0.0-20190106161140-3f1c8253044a/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
honnef.co/go/tools v0.0.0-20190418001031-e561f6794a2a/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
honnef.co/go/tools v0.0.1-2019.2.3 h1:3JgtbtFHMiCmsznwGVTUWbgGov+pVqnlf1dEJTNAXeM=
honnef.co/go/tools v0.0.1-2019.2.3/go.mod h1:a3bituU0lyd329TUQxRnasdCoJDkEUEAqEt0JzvZhAg=
rsc.io/binaryregexp v0.2.0/go.mod h1:qTv7/COck+e2FymRvadv62gMdZztPaShugOCi3I+8D8=

24
remote/remote.go
View file

@ -12,7 +12,8 @@ import (
"os" "os"
"github.com/spf13/viper" "github.com/spf13/viper"
crypt "github.com/xordataexchange/crypt/config"
crypt "github.com/bketelsen/crypt/config"
) )
type remoteConfigProvider struct{} type remoteConfigProvider struct{}
@ -63,9 +64,7 @@ func (rc remoteConfigProvider) WatchChannel(rp viper.RemoteProvider) (<-chan *vi
Error: resp.Error, Error: resp.Error,
Value: resp.Value, Value: resp.Value,
} }
} }
} }
}(cryptoResponseCh, viperResponsCh, quitwc, quit) }(cryptoResponseCh, viperResponsCh, quitwc, quit)
@ -77,20 +76,27 @@ func getConfigManager(rp viper.RemoteProvider) (crypt.ConfigManager, error) {
var err error var err error
if rp.SecretKeyring() != "" { if rp.SecretKeyring() != "" {
kr, err := os.Open(rp.SecretKeyring()) var kr *os.File
defer kr.Close() kr, err = os.Open(rp.SecretKeyring())
if err != nil { if err != nil {
return nil, err return nil, err
} }
if rp.Provider() == "etcd" { defer kr.Close()
switch rp.Provider() {
case "etcd":
cm, err = crypt.NewEtcdConfigManager([]string{rp.Endpoint()}, kr) cm, err = crypt.NewEtcdConfigManager([]string{rp.Endpoint()}, kr)
} else { case "firestore":
cm, err = crypt.NewFirestoreConfigManager([]string{rp.Endpoint()}, kr)
default:
cm, err = crypt.NewConsulConfigManager([]string{rp.Endpoint()}, kr) cm, err = crypt.NewConsulConfigManager([]string{rp.Endpoint()}, kr)
} }
} else { } else {
if rp.Provider() == "etcd" { switch rp.Provider() {
case "etcd":
cm, err = crypt.NewStandardEtcdConfigManager([]string{rp.Endpoint()}) cm, err = crypt.NewStandardEtcdConfigManager([]string{rp.Endpoint()})
} else { case "firestore":
cm, err = crypt.NewStandardFirestoreConfigManager([]string{rp.Endpoint()})
default:
cm, err = crypt.NewStandardConsulConfigManager([]string{rp.Endpoint()}) cm, err = crypt.NewStandardConsulConfigManager([]string{rp.Endpoint()})
} }
} }

6
util.go
View file

@ -115,11 +115,11 @@ func absPathify(inPath string) string {
return "" return ""
} }
// Check if File / Directory Exists // Check if file Exists
func exists(fs afero.Fs, path string) (bool, error) { func exists(fs afero.Fs, path string) (bool, error) {
_, err := fs.Stat(path) stat, err := fs.Stat(path)
if err == nil { if err == nil {
return true, nil return !stat.IsDir(), nil
} }
if os.IsNotExist(err) { if os.IsNotExist(err) {
return false, nil return false, nil

413
viper.go
View file

@ -3,7 +3,7 @@
// Use of this source code is governed by an MIT-style // Use of this source code is governed by an MIT-style
// license that can be found in the LICENSE file. // license that can be found in the LICENSE file.
// Viper is a application configuration system. // Viper is an application configuration system.
// It believes that applications can be configured a variety of ways // It believes that applications can be configured a variety of ways
// via flags, ENVIRONMENT variables, configuration files retrieved // via flags, ENVIRONMENT variables, configuration files retrieved
// from the file system, or a remote key/value store. // from the file system, or a remote key/value store.
@ -23,6 +23,7 @@ import (
"bytes" "bytes"
"encoding/csv" "encoding/csv"
"encoding/json" "encoding/json"
"errors"
"fmt" "fmt"
"io" "io"
"log" "log"
@ -33,18 +34,19 @@ import (
"sync" "sync"
"time" "time"
yaml "gopkg.in/yaml.v2"
"github.com/fsnotify/fsnotify" "github.com/fsnotify/fsnotify"
"github.com/hashicorp/hcl" "github.com/hashicorp/hcl"
"github.com/hashicorp/hcl/hcl/printer" "github.com/hashicorp/hcl/hcl/printer"
"github.com/magiconair/properties" "github.com/magiconair/properties"
"github.com/mitchellh/mapstructure" "github.com/mitchellh/mapstructure"
toml "github.com/pelletier/go-toml" "github.com/pelletier/go-toml"
"github.com/spf13/afero" "github.com/spf13/afero"
"github.com/spf13/cast" "github.com/spf13/cast"
jww "github.com/spf13/jwalterweatherman" jww "github.com/spf13/jwalterweatherman"
"github.com/spf13/pflag" "github.com/spf13/pflag"
"github.com/subosito/gotenv"
"gopkg.in/ini.v1"
"gopkg.in/yaml.v2"
) )
// ConfigMarshalError happens when failing to marshal the configuration. // ConfigMarshalError happens when failing to marshal the configuration.
@ -114,6 +116,14 @@ func (fnfe ConfigFileNotFoundError) Error() string {
return fmt.Sprintf("Config File %q Not Found in %q", fnfe.name, fnfe.locations) return fmt.Sprintf("Config File %q Not Found in %q", fnfe.name, fnfe.locations)
} }
// ConfigFileAlreadyExistsError denotes failure to write new configuration file.
type ConfigFileAlreadyExistsError string
// Error returns the formatted error when configuration already exists.
func (faee ConfigFileAlreadyExistsError) Error() string {
return fmt.Sprintf("Config File %q Already Exists", string(faee))
}
// A DecoderConfigOption can be passed to viper.Unmarshal to configure // A DecoderConfigOption can be passed to viper.Unmarshal to configure
// mapstructure.DecoderConfig options // mapstructure.DecoderConfig options
type DecoderConfigOption func(*mapstructure.DecoderConfig) type DecoderConfigOption func(*mapstructure.DecoderConfig)
@ -180,13 +190,15 @@ type Viper struct {
remoteProviders []*defaultRemoteProvider remoteProviders []*defaultRemoteProvider
// Name of file to look for inside the path // Name of file to look for inside the path
configName string configName string
configFile string configFile string
configType string configType string
envPrefix string configPermissions os.FileMode
envPrefix string
automaticEnvApplied bool automaticEnvApplied bool
envKeyReplacer *strings.Replacer envKeyReplacer StringReplacer
allowEmptyEnv bool
config map[string]interface{} config map[string]interface{}
override map[string]interface{} override map[string]interface{}
@ -209,6 +221,7 @@ func New() *Viper {
v := new(Viper) v := new(Viper)
v.keyDelim = "." v.keyDelim = "."
v.configName = "config" v.configName = "config"
v.configPermissions = os.FileMode(0644)
v.fs = afero.NewOsFs() v.fs = afero.NewOsFs()
v.config = make(map[string]interface{}) v.config = make(map[string]interface{})
v.override = make(map[string]interface{}) v.override = make(map[string]interface{})
@ -222,13 +235,59 @@ func New() *Viper {
return v return v
} }
// Intended for testing, will reset all to default settings. // Option configures Viper using the functional options paradigm popularized by Rob Pike and Dave Cheney.
// If you're unfamiliar with this style,
// see https://commandcenter.blogspot.com/2014/01/self-referential-functions-and-design.html and
// https://dave.cheney.net/2014/10/17/functional-options-for-friendly-apis.
type Option interface {
apply(v *Viper)
}
type optionFunc func(v *Viper)
func (fn optionFunc) apply(v *Viper) {
fn(v)
}
// KeyDelimiter sets the delimiter used for determining key parts.
// By default it's value is ".".
func KeyDelimiter(d string) Option {
return optionFunc(func(v *Viper) {
v.keyDelim = d
})
}
// StringReplacer applies a set of replacements to a string.
type StringReplacer interface {
// Replace returns a copy of s with all replacements performed.
Replace(s string) string
}
// EnvKeyReplacer sets a replacer used for mapping environment variables to internal keys.
func EnvKeyReplacer(r StringReplacer) Option {
return optionFunc(func(v *Viper) {
v.envKeyReplacer = r
})
}
// NewWithOptions creates a new Viper instance.
func NewWithOptions(opts ...Option) *Viper {
v := New()
for _, opt := range opts {
opt.apply(v)
}
return v
}
// Reset is intended for testing, will reset all to default settings.
// In the public interface for the viper package so applications // In the public interface for the viper package so applications
// can use it in their testing as well. // can use it in their testing as well.
func Reset() { func Reset() {
v = New() v = New()
SupportedExts = []string{"json", "toml", "yaml", "yml", "properties", "props", "prop", "hcl"} SupportedExts = []string{"json", "toml", "yaml", "yml", "properties", "props", "prop", "hcl", "dotenv", "env", "ini"}
SupportedRemoteProviders = []string{"etcd", "consul"} SupportedRemoteProviders = []string{"etcd", "consul", "firestore"}
} }
type defaultRemoteProvider struct { type defaultRemoteProvider struct {
@ -266,10 +325,10 @@ type RemoteProvider interface {
} }
// SupportedExts are universally supported extensions. // 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", "ini"}
// SupportedRemoteProviders are universally supported remote providers. // SupportedRemoteProviders are universally supported remote providers.
var SupportedRemoteProviders = []string{"etcd", "consul"} var SupportedRemoteProviders = []string{"etcd", "consul", "firestore"}
func OnConfigChange(run func(in fsnotify.Event)) { v.OnConfigChange(run) } func OnConfigChange(run func(in fsnotify.Event)) { v.OnConfigChange(run) }
func (v *Viper) OnConfigChange(run func(in fsnotify.Event)) { func (v *Viper) OnConfigChange(run func(in fsnotify.Event)) {
@ -291,6 +350,7 @@ func (v *Viper) WatchConfig() {
filename, err := v.getConfigFile() filename, err := v.getConfigFile()
if err != nil { if err != nil {
log.Printf("error: %v\n", err) log.Printf("error: %v\n", err)
initWG.Done()
return return
} }
@ -340,7 +400,7 @@ func (v *Viper) WatchConfig() {
} }
}() }()
watcher.Add(configDir) watcher.Add(configDir)
initWG.Done() // done initalizing the watch in this go routine, so the parent routine can move on... initWG.Done() // done initializing the watch in this go routine, so the parent routine can move on...
eventsWG.Wait() // now, wait for event loop to end in this go-routine... eventsWG.Wait() // now, wait for event loop to end in this go-routine...
}() }()
initWG.Wait() // make sure that the go routine above fully ended before returning initWG.Wait() // make sure that the go routine above fully ended before returning
@ -373,6 +433,14 @@ func (v *Viper) mergeWithEnvPrefix(in string) string {
return strings.ToUpper(in) return strings.ToUpper(in)
} }
// AllowEmptyEnv tells Viper to consider set,
// but empty environment variables as valid values instead of falling back.
// For backward compatibility reasons this is false by default.
func AllowEmptyEnv(allowEmptyEnv bool) { v.AllowEmptyEnv(allowEmptyEnv) }
func (v *Viper) AllowEmptyEnv(allowEmptyEnv bool) {
v.allowEmptyEnv = allowEmptyEnv
}
// TODO: should getEnv logic be moved into find(). Can generalize the use of // TODO: should getEnv logic be moved into find(). Can generalize the use of
// rewriting keys many things, Ex: Get('someKey') -> some_key // rewriting keys many things, Ex: Get('someKey') -> some_key
// (camel case to snake case for JSON keys perhaps) // (camel case to snake case for JSON keys perhaps)
@ -380,11 +448,14 @@ func (v *Viper) mergeWithEnvPrefix(in string) string {
// getEnv is a wrapper around os.Getenv which replaces characters in the original // getEnv is a wrapper around os.Getenv which replaces characters in the original
// key. This allows env vars which have different keys than the config object // key. This allows env vars which have different keys than the config object
// keys. // keys.
func (v *Viper) getEnv(key string) string { func (v *Viper) getEnv(key string) (string, bool) {
if v.envKeyReplacer != nil { if v.envKeyReplacer != nil {
key = v.envKeyReplacer.Replace(key) key = v.envKeyReplacer.Replace(key)
} }
return os.Getenv(key)
val, ok := os.LookupEnv(key)
return val, ok && (v.allowEmptyEnv || val != "")
} }
// ConfigFileUsed returns the file used to populate the config registry. // ConfigFileUsed returns the file used to populate the config registry.
@ -406,7 +477,7 @@ func (v *Viper) AddConfigPath(in string) {
// AddRemoteProvider adds a remote configuration source. // AddRemoteProvider adds a remote configuration source.
// Remote Providers are searched in the order they are added. // Remote Providers are searched in the order they are added.
// provider is a string value, "etcd" or "consul" are currently supported. // provider is a string value: "etcd", "consul" or "firestore" are currently supported.
// endpoint is the url. etcd requires http://ip:port consul requires ip:port // endpoint is the url. etcd requires http://ip:port consul requires ip:port
// path is the path in the k/v store to retrieve configuration // path is the path in the k/v store to retrieve configuration
// To retrieve a config file called myapp.json from /configs/myapp.json // To retrieve a config file called myapp.json from /configs/myapp.json
@ -435,14 +506,14 @@ func (v *Viper) AddRemoteProvider(provider, endpoint, path string) error {
// AddSecureRemoteProvider adds a remote configuration source. // AddSecureRemoteProvider adds a remote configuration source.
// Secure Remote Providers are searched in the order they are added. // Secure Remote Providers are searched in the order they are added.
// provider is a string value, "etcd" or "consul" are currently supported. // provider is a string value: "etcd", "consul" or "firestore" are currently supported.
// endpoint is the url. etcd requires http://ip:port consul requires ip:port // endpoint is the url. etcd requires http://ip:port consul requires ip:port
// secretkeyring is the filepath to your openpgp secret keyring. e.g. /etc/secrets/myring.gpg // secretkeyring is the filepath to your openpgp secret keyring. e.g. /etc/secrets/myring.gpg
// path is the path in the k/v store to retrieve configuration // path is the path in the k/v store to retrieve configuration
// To retrieve a config file called myapp.json from /configs/myapp.json // To retrieve a config file called myapp.json from /configs/myapp.json
// you should set path to /configs and set config name (SetConfigName()) to // you should set path to /configs and set config name (SetConfigName()) to
// "myapp" // "myapp"
// Secure Remote Providers are implemented with github.com/xordataexchange/crypt // Secure Remote Providers are implemented with github.com/bketelsen/crypt
func AddSecureRemoteProvider(provider, endpoint, path, secretkeyring string) error { func AddSecureRemoteProvider(provider, endpoint, path, secretkeyring string) error {
return v.AddSecureRemoteProvider(provider, endpoint, path, secretkeyring) return v.AddSecureRemoteProvider(provider, endpoint, path, secretkeyring)
} }
@ -611,10 +682,9 @@ func (v *Viper) isPathShadowedInFlatMap(path []string, mi interface{}) string {
// "foo.bar.baz" in a lower-priority map // "foo.bar.baz" in a lower-priority map
func (v *Viper) isPathShadowedInAutoEnv(path []string) string { func (v *Viper) isPathShadowedInAutoEnv(path []string) string {
var parentKey string var parentKey string
var val string
for i := 1; i < len(path); i++ { for i := 1; i < len(path); i++ {
parentKey = strings.Join(path[0:i], v.keyDelim) parentKey = strings.Join(path[0:i], v.keyDelim)
if val = v.getEnv(v.mergeWithEnvPrefix(parentKey)); val != "" { if _, ok := v.getEnv(v.mergeWithEnvPrefix(parentKey)); ok {
return parentKey return parentKey
} }
} }
@ -655,7 +725,7 @@ func GetViper() *Viper {
func Get(key string) interface{} { return v.Get(key) } func Get(key string) interface{} { return v.Get(key) }
func (v *Viper) Get(key string) interface{} { func (v *Viper) Get(key string) interface{} {
lcaseKey := strings.ToLower(key) lcaseKey := strings.ToLower(key)
val := v.find(lcaseKey) val := v.find(lcaseKey, true)
if val == nil { if val == nil {
return nil return nil
} }
@ -676,6 +746,12 @@ func (v *Viper) Get(key string) interface{} {
return cast.ToString(val) return cast.ToString(val)
case int32, int16, int8, int: case int32, int16, int8, int:
return cast.ToInt(val) return cast.ToInt(val)
case uint:
return cast.ToUint(val)
case uint32:
return cast.ToUint32(val)
case uint64:
return cast.ToUint64(val)
case int64: case int64:
return cast.ToInt64(val) return cast.ToInt64(val)
case float64, float32: case float64, float32:
@ -686,6 +762,8 @@ func (v *Viper) Get(key string) interface{} {
return cast.ToDuration(val) return cast.ToDuration(val)
case []string: case []string:
return cast.ToStringSlice(val) return cast.ToStringSlice(val)
case []int:
return cast.ToIntSlice(val)
} }
} }
@ -745,6 +823,24 @@ func (v *Viper) GetInt64(key string) int64 {
return cast.ToInt64(v.Get(key)) return cast.ToInt64(v.Get(key))
} }
// GetUint returns the value associated with the key as an unsigned integer.
func GetUint(key string) uint { return v.GetUint(key) }
func (v *Viper) GetUint(key string) uint {
return cast.ToUint(v.Get(key))
}
// GetUint32 returns the value associated with the key as an unsigned integer.
func GetUint32(key string) uint32 { return v.GetUint32(key) }
func (v *Viper) GetUint32(key string) uint32 {
return cast.ToUint32(v.Get(key))
}
// GetUint64 returns the value associated with the key as an unsigned integer.
func GetUint64(key string) uint64 { return v.GetUint64(key) }
func (v *Viper) GetUint64(key string) uint64 {
return cast.ToUint64(v.Get(key))
}
// GetFloat64 returns the value associated with the key as a float64. // GetFloat64 returns the value associated with the key as a float64.
func GetFloat64(key string) float64 { return v.GetFloat64(key) } func GetFloat64(key string) float64 { return v.GetFloat64(key) }
func (v *Viper) GetFloat64(key string) float64 { func (v *Viper) GetFloat64(key string) float64 {
@ -763,6 +859,12 @@ func (v *Viper) GetDuration(key string) time.Duration {
return cast.ToDuration(v.Get(key)) return cast.ToDuration(v.Get(key))
} }
// GetIntSlice returns the value associated with the key as a slice of int values.
func GetIntSlice(key string) []int { return v.GetIntSlice(key) }
func (v *Viper) GetIntSlice(key string) []int {
return cast.ToIntSlice(v.Get(key))
}
// GetStringSlice returns the value associated with the key as a slice of strings. // GetStringSlice returns the value associated with the key as a slice of strings.
func GetStringSlice(key string) []string { return v.GetStringSlice(key) } func GetStringSlice(key string) []string { return v.GetStringSlice(key) }
func (v *Viper) GetStringSlice(key string) []string { func (v *Viper) GetStringSlice(key string) []string {
@ -806,8 +908,6 @@ func (v *Viper) UnmarshalKey(key string, rawVal interface{}, opts ...DecoderConf
return err return err
} }
v.insensitiviseMaps()
return nil return nil
} }
@ -823,8 +923,6 @@ func (v *Viper) Unmarshal(rawVal interface{}, opts ...DecoderConfigOption) error
return err return err
} }
v.insensitiviseMaps()
return nil return nil
} }
@ -857,8 +955,11 @@ func decode(input interface{}, config *mapstructure.DecoderConfig) error {
// UnmarshalExact unmarshals the config into a Struct, erroring if a field is nonexistent // UnmarshalExact unmarshals the config into a Struct, erroring if a field is nonexistent
// in the destination struct. // in the destination struct.
func (v *Viper) UnmarshalExact(rawVal interface{}) error { func UnmarshalExact(rawVal interface{}, opts ...DecoderConfigOption) error {
config := defaultDecoderConfig(rawVal) return v.UnmarshalExact(rawVal, opts...)
}
func (v *Viper) UnmarshalExact(rawVal interface{}, opts ...DecoderConfigOption) error {
config := defaultDecoderConfig(rawVal, opts...)
config.ErrorUnused = true config.ErrorUnused = true
err := decode(v.AllSettings(), config) err := decode(v.AllSettings(), config)
@ -867,8 +968,6 @@ func (v *Viper) UnmarshalExact(rawVal interface{}) error {
return err return err
} }
v.insensitiviseMaps()
return nil return nil
} }
@ -903,11 +1002,6 @@ func (v *Viper) BindFlagValues(flags FlagValueSet) (err error) {
} }
// BindFlagValue binds a specific key to a FlagValue. // BindFlagValue binds a specific key to a FlagValue.
// Example (where serverCmd is a Cobra instance):
//
// serverCmd.Flags().Int("port", 1138, "Port to run Application server on")
// Viper.BindFlagValue("port", serverCmd.Flags().Lookup("port"))
//
func BindFlagValue(key string, flag FlagValue) error { return v.BindFlagValue(key, flag) } func BindFlagValue(key string, flag FlagValue) error { return v.BindFlagValue(key, flag) }
func (v *Viper) BindFlagValue(key string, flag FlagValue) error { func (v *Viper) BindFlagValue(key string, flag FlagValue) error {
if flag == nil { if flag == nil {
@ -925,7 +1019,7 @@ func BindEnv(input ...string) error { return v.BindEnv(input...) }
func (v *Viper) BindEnv(input ...string) error { func (v *Viper) BindEnv(input ...string) error {
var key, envkey string var key, envkey string
if len(input) == 0 { if len(input) == 0 {
return fmt.Errorf("BindEnv missing key to bind to") return fmt.Errorf("missing key to bind to")
} }
key = strings.ToLower(input[0]) key = strings.ToLower(input[0])
@ -942,12 +1036,15 @@ func (v *Viper) BindEnv(input ...string) error {
} }
// Given a key, find the value. // Given a key, find the value.
// Viper will check in the following order: //
// flag, env, config file, key/value store, default.
// Viper will check to see if an alias exists first. // Viper will check to see if an alias exists first.
// Viper will then check in the following order:
// flag, env, config file, key/value store.
// Lastly, if no value was found and flagDefault is true, and if the key
// corresponds to a flag, the flag's default value is returned.
//
// Note: this assumes a lower-cased key given. // Note: this assumes a lower-cased key given.
func (v *Viper) find(lcaseKey string) interface{} { func (v *Viper) find(lcaseKey string, flagDefault bool) interface{} {
var ( var (
val interface{} val interface{}
exists bool exists bool
@ -987,6 +1084,13 @@ func (v *Viper) find(lcaseKey string) interface{} {
s = strings.TrimSuffix(s, "]") s = strings.TrimSuffix(s, "]")
res, _ := readAsCSV(s) res, _ := readAsCSV(s)
return res return res
case "intSlice":
s := strings.TrimPrefix(flag.ValueString(), "[")
s = strings.TrimSuffix(s, "]")
res, _ := readAsCSV(s)
return cast.ToIntSlice(res)
case "stringToString":
return stringToStringConv(flag.ValueString())
default: default:
return flag.ValueString() return flag.ValueString()
} }
@ -999,7 +1103,7 @@ func (v *Viper) find(lcaseKey string) interface{} {
if v.automaticEnvApplied { if v.automaticEnvApplied {
// even if it hasn't been registered, if automaticEnv is used, // even if it hasn't been registered, if automaticEnv is used,
// check any Get request // check any Get request
if val = v.getEnv(v.mergeWithEnvPrefix(lcaseKey)); val != "" { if val, ok := v.getEnv(v.mergeWithEnvPrefix(lcaseKey)); ok {
return val return val
} }
if nested && v.isPathShadowedInAutoEnv(path) != "" { if nested && v.isPathShadowedInAutoEnv(path) != "" {
@ -1008,7 +1112,7 @@ func (v *Viper) find(lcaseKey string) interface{} {
} }
envkey, exists := v.env[lcaseKey] envkey, exists := v.env[lcaseKey]
if exists { if exists {
if val = v.getEnv(envkey); val != "" { if val, ok := v.getEnv(envkey); ok {
return val return val
} }
} }
@ -1043,24 +1147,33 @@ func (v *Viper) find(lcaseKey string) interface{} {
return nil return nil
} }
// last chance: if no other value is returned and a flag does exist for the value, if flagDefault {
// get the flag's value even if the flag's value has not changed // last chance: if no value is found and a flag does exist for the key,
if flag, exists := v.pflags[lcaseKey]; exists { // get the flag's default value even if the flag's value has not been set.
switch flag.ValueType() { if flag, exists := v.pflags[lcaseKey]; exists {
case "int", "int8", "int16", "int32", "int64": switch flag.ValueType() {
return cast.ToInt(flag.ValueString()) case "int", "int8", "int16", "int32", "int64":
case "bool": return cast.ToInt(flag.ValueString())
return cast.ToBool(flag.ValueString()) case "bool":
case "stringSlice": return cast.ToBool(flag.ValueString())
s := strings.TrimPrefix(flag.ValueString(), "[") case "stringSlice":
s = strings.TrimSuffix(s, "]") s := strings.TrimPrefix(flag.ValueString(), "[")
res, _ := readAsCSV(s) s = strings.TrimSuffix(s, "]")
return res res, _ := readAsCSV(s)
default: return res
return flag.ValueString() case "intSlice":
s := strings.TrimPrefix(flag.ValueString(), "[")
s = strings.TrimSuffix(s, "]")
res, _ := readAsCSV(s)
return cast.ToIntSlice(res)
case "stringToString":
return stringToStringConv(flag.ValueString())
default:
return flag.ValueString()
}
} }
// last item, no need to check shadowing
} }
// last item, no need to check shadowing
return nil return nil
} }
@ -1074,12 +1187,36 @@ func readAsCSV(val string) ([]string, error) {
return csvReader.Read() return csvReader.Read()
} }
// mostly copied from pflag's implementation of this operation here https://github.com/spf13/pflag/blob/master/string_to_string.go#L79
// alterations are: errors are swallowed, map[string]interface{} is returned in order to enable cast.ToStringMap
func stringToStringConv(val string) interface{} {
val = strings.Trim(val, "[]")
// An empty string would cause an empty map
if len(val) == 0 {
return map[string]interface{}{}
}
r := csv.NewReader(strings.NewReader(val))
ss, err := r.Read()
if err != nil {
return nil
}
out := make(map[string]interface{}, len(ss))
for _, pair := range ss {
kv := strings.SplitN(pair, "=", 2)
if len(kv) != 2 {
return nil
}
out[kv[0]] = kv[1]
}
return out
}
// IsSet checks to see if the key has been set in any of the data locations. // IsSet checks to see if the key has been set in any of the data locations.
// IsSet is case-insensitive for a key. // IsSet is case-insensitive for a key.
func IsSet(key string) bool { return v.IsSet(key) } func IsSet(key string) bool { return v.IsSet(key) }
func (v *Viper) IsSet(key string) bool { func (v *Viper) IsSet(key string) bool {
lcaseKey := strings.ToLower(key) lcaseKey := strings.ToLower(key)
val := v.find(lcaseKey) val := v.find(lcaseKey, false)
return val != nil return val != nil
} }
@ -1098,8 +1235,8 @@ func (v *Viper) SetEnvKeyReplacer(r *strings.Replacer) {
v.envKeyReplacer = r v.envKeyReplacer = r
} }
// Aliases provide another accessor for the same key. // RegisterAlias creates an alias that provides another accessor for the same key.
// This enables one to change a name without breaking the application // This enables one to change a name without breaking the application.
func RegisterAlias(alias string, key string) { v.RegisterAlias(alias, key) } func RegisterAlias(alias string, key string) { v.RegisterAlias(alias, key) }
func (v *Viper) RegisterAlias(alias string, key string) { func (v *Viper) RegisterAlias(alias string, key string) {
v.registerAlias(alias, strings.ToLower(key)) v.registerAlias(alias, strings.ToLower(key))
@ -1254,13 +1391,21 @@ func (v *Viper) ReadConfig(in io.Reader) error {
// MergeConfig merges a new configuration with an existing config. // MergeConfig merges a new configuration with an existing config.
func MergeConfig(in io.Reader) error { return v.MergeConfig(in) } func MergeConfig(in io.Reader) error { return v.MergeConfig(in) }
func (v *Viper) MergeConfig(in io.Reader) error { func (v *Viper) MergeConfig(in io.Reader) error {
if v.config == nil {
v.config = make(map[string]interface{})
}
cfg := make(map[string]interface{}) cfg := make(map[string]interface{})
if err := v.unmarshalReader(in, cfg); err != nil { if err := v.unmarshalReader(in, cfg); err != nil {
return err return err
} }
return v.MergeConfigMap(cfg)
}
// MergeConfigMap merges the configuration from the map given with an existing config.
// Note that the map given may be modified.
func MergeConfigMap(cfg map[string]interface{}) error { return v.MergeConfigMap(cfg) }
func (v *Viper) MergeConfigMap(cfg map[string]interface{}) error {
if v.config == nil {
v.config = make(map[string]interface{})
}
insensitiviseMap(cfg)
mergeMaps(cfg, v.config, nil) mergeMaps(cfg, v.config, nil)
return nil return nil
} }
@ -1278,11 +1423,10 @@ func (v *Viper) WriteConfig() error {
// SafeWriteConfig writes current configuration to file only if the file does not exist. // SafeWriteConfig writes current configuration to file only if the file does not exist.
func SafeWriteConfig() error { return v.SafeWriteConfig() } func SafeWriteConfig() error { return v.SafeWriteConfig() }
func (v *Viper) SafeWriteConfig() error { func (v *Viper) SafeWriteConfig() error {
filename, err := v.getConfigFile() if len(v.configPaths) < 1 {
if err != nil { return errors.New("missing configuration for 'configPath'")
return err
} }
return v.writeConfig(filename, false) return v.SafeWriteConfigAs(filepath.Join(v.configPaths[0], v.configName+"."+v.configType))
} }
// WriteConfigAs writes current configuration to a given filename. // WriteConfigAs writes current configuration to a given filename.
@ -1294,38 +1438,48 @@ func (v *Viper) WriteConfigAs(filename string) error {
// SafeWriteConfigAs writes current configuration to a given filename if it does not exist. // SafeWriteConfigAs writes current configuration to a given filename if it does not exist.
func SafeWriteConfigAs(filename string) error { return v.SafeWriteConfigAs(filename) } func SafeWriteConfigAs(filename string) error { return v.SafeWriteConfigAs(filename) }
func (v *Viper) SafeWriteConfigAs(filename string) error { func (v *Viper) SafeWriteConfigAs(filename string) error {
alreadyExists, err := afero.Exists(v.fs, filename)
if alreadyExists && err == nil {
return ConfigFileAlreadyExistsError(filename)
}
return v.writeConfig(filename, false) return v.writeConfig(filename, false)
} }
func writeConfig(filename string, force bool) error { return v.writeConfig(filename, force) }
func (v *Viper) writeConfig(filename string, force bool) error { func (v *Viper) writeConfig(filename string, force bool) error {
jww.INFO.Println("Attempting to write configuration to file.") jww.INFO.Println("Attempting to write configuration to file.")
var configType string
ext := filepath.Ext(filename) ext := filepath.Ext(filename)
if len(ext) <= 1 { if ext != "" {
return fmt.Errorf("Filename: %s requires valid extension.", filename) configType = ext[1:]
} else {
configType = v.configType
} }
configType := ext[1:] if configType == "" {
return fmt.Errorf("config type could not be determined for %s", filename)
}
if !stringInSlice(configType, SupportedExts) { if !stringInSlice(configType, SupportedExts) {
return UnsupportedConfigError(configType) return UnsupportedConfigError(configType)
} }
if v.config == nil { if v.config == nil {
v.config = make(map[string]interface{}) v.config = make(map[string]interface{})
} }
var flags int flags := os.O_CREATE | os.O_TRUNC | os.O_WRONLY
if force == true { if !force {
flags = os.O_CREATE | os.O_TRUNC | os.O_WRONLY flags |= os.O_EXCL
} else {
if _, err := os.Stat(filename); os.IsNotExist(err) {
flags = os.O_WRONLY
} else {
return fmt.Errorf("File: %s exists. Use WriteConfig to overwrite.", filename)
}
} }
f, err := v.fs.OpenFile(filename, flags, os.FileMode(0644)) f, err := v.fs.OpenFile(filename, flags, v.configPermissions)
if err != nil { if err != nil {
return err return err
} }
return v.marshalWriter(f, configType) defer f.Close()
if err := v.marshalWriter(f, configType); err != nil {
return err
}
return f.Sync()
} }
// Unmarshal a Reader into a map. // Unmarshal a Reader into a map.
@ -1349,7 +1503,7 @@ func (v *Viper) unmarshalReader(in io.Reader, c map[string]interface{}) error {
} }
case "hcl": case "hcl":
obj, err := hcl.Parse(string(buf.Bytes())) obj, err := hcl.Parse(buf.String())
if err != nil { if err != nil {
return ConfigParseError{err} return ConfigParseError{err}
} }
@ -1367,6 +1521,15 @@ func (v *Viper) unmarshalReader(in io.Reader, c map[string]interface{}) error {
c[k] = v 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": case "properties", "props", "prop":
v.properties = properties.NewProperties() v.properties = properties.NewProperties()
var err error var err error
@ -1382,6 +1545,23 @@ func (v *Viper) unmarshalReader(in io.Reader, c map[string]interface{}) error {
// set innermost value // set innermost value
deepestMap[lastKey] = value deepestMap[lastKey] = value
} }
case "ini":
cfg := ini.Empty()
err := cfg.Append(buf.Bytes())
if err != nil {
return ConfigParseError{err}
}
sections := cfg.Sections()
for i := 0; i < len(sections); i++ {
section := sections[i]
keys := section.Keys()
for j := 0; j < len(keys); j++ {
key := keys[j]
value := cfg.Section(section.Name()).Key(key.Name()).String()
c[section.Name()+"."+key.Name()] = value
}
}
} }
insensitiviseMap(c) insensitiviseMap(c)
@ -1389,9 +1569,6 @@ func (v *Viper) unmarshalReader(in io.Reader, c map[string]interface{}) error {
} }
// Marshal a map into Writer. // Marshal a map into Writer.
func marshalWriter(f afero.File, configType string) error {
return v.marshalWriter(f, configType)
}
func (v *Viper) marshalWriter(f afero.File, configType string) error { func (v *Viper) marshalWriter(f afero.File, configType string) error {
c := v.AllSettings() c := v.AllSettings()
switch configType { switch configType {
@ -1407,6 +1584,9 @@ func (v *Viper) marshalWriter(f afero.File, configType string) error {
case "hcl": case "hcl":
b, err := json.Marshal(c) b, err := json.Marshal(c)
if err != nil {
return ConfigMarshalError{err}
}
ast, err := hcl.Parse(string(b)) ast, err := hcl.Parse(string(b))
if err != nil { if err != nil {
return ConfigMarshalError{err} return ConfigMarshalError{err}
@ -1432,6 +1612,18 @@ func (v *Viper) marshalWriter(f afero.File, configType string) error {
return ConfigMarshalError{err} 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": case "toml":
t, err := toml.TreeFromMap(c) t, err := toml.TreeFromMap(c)
if err != nil { if err != nil {
@ -1450,6 +1642,22 @@ func (v *Viper) marshalWriter(f afero.File, configType string) error {
if _, err = f.WriteString(string(b)); err != nil { if _, err = f.WriteString(string(b)); err != nil {
return ConfigMarshalError{err} return ConfigMarshalError{err}
} }
case "ini":
keys := v.AllKeys()
cfg := ini.Empty()
ini.PrettyFormat = false
for i := 0; i < len(keys); i++ {
key := keys[i]
lastSep := strings.LastIndex(key, ".")
sectionName := key[:(lastSep)]
keyName := key[(lastSep + 1):]
if sectionName == "default" {
sectionName = ""
}
cfg.Section(sectionName).Key(keyName).SetValue(v.Get(key).(string))
}
cfg.WriteTo(f)
} }
return nil return nil
} }
@ -1566,13 +1774,6 @@ func (v *Viper) WatchRemoteConfigOnChannel() error {
return v.watchKeyValueConfigOnChannel() return v.watchKeyValueConfigOnChannel()
} }
func (v *Viper) insensitiviseMaps() {
insensitiviseMap(v.config)
insensitiviseMap(v.defaults)
insensitiviseMap(v.override)
insensitiviseMap(v.kvstore)
}
// Retrieve the first found remote configuration. // Retrieve the first found remote configuration.
func (v *Viper) getKeyValueConfig() error { func (v *Viper) getKeyValueConfig() error {
if RemoteConfig == nil { if RemoteConfig == nil {
@ -1603,7 +1804,7 @@ func (v *Viper) getRemoteConfig(provider RemoteProvider) (map[string]interface{}
func (v *Viper) watchKeyValueConfigOnChannel() error { func (v *Viper) watchKeyValueConfigOnChannel() error {
for _, rp := range v.remoteProviders { for _, rp := range v.remoteProviders {
respc, _ := RemoteConfig.WatchChannel(rp) respc, _ := RemoteConfig.WatchChannel(rp)
//Todo: Add quit channel // Todo: Add quit channel
go func(rc <-chan *RemoteResponse) { go func(rc <-chan *RemoteResponse) {
for { for {
b := <-rc b := <-rc
@ -1639,7 +1840,7 @@ func (v *Viper) watchRemoteConfig(provider RemoteProvider) (map[string]interface
} }
// AllKeys returns all keys holding a value, regardless of where they are set. // AllKeys returns all keys holding a value, regardless of where they are set.
// Nested keys are returned with a v.keyDelim (= ".") separator // Nested keys are returned with a v.keyDelim separator
func AllKeys() []string { return v.AllKeys() } func AllKeys() []string { return v.AllKeys() }
func (v *Viper) AllKeys() []string { func (v *Viper) AllKeys() []string {
m := map[string]bool{} m := map[string]bool{}
@ -1653,7 +1854,7 @@ func (v *Viper) AllKeys() []string {
m = v.flattenAndMergeMap(m, v.defaults, "") m = v.flattenAndMergeMap(m, v.defaults, "")
// convert set of paths to list // convert set of paths to list
a := []string{} a := make([]string, 0, len(m))
for x := range m { for x := range m {
a = append(a, x) a = append(a, x)
} }
@ -1662,7 +1863,7 @@ func (v *Viper) AllKeys() []string {
// flattenAndMergeMap recursively flattens the given map into a map[string]bool // flattenAndMergeMap recursively flattens the given map into a map[string]bool
// of key paths (used as a set, easier to manipulate than a []string): // of key paths (used as a set, easier to manipulate than a []string):
// - each path is merged into a single key string, delimited with v.keyDelim (= ".") // - each path is merged into a single key string, delimited with v.keyDelim
// - if a path is shadowed by an earlier value in the initial shadow map, // - if a path is shadowed by an earlier value in the initial shadow map,
// it is skipped. // it is skipped.
// The resulting set of paths is merged to the given shadow set at the same time. // The resulting set of paths is merged to the given shadow set at the same time.
@ -1702,7 +1903,7 @@ func (v *Viper) flattenAndMergeMap(shadow map[string]bool, m map[string]interfac
func (v *Viper) mergeFlatMap(shadow map[string]bool, m map[string]interface{}) map[string]bool { func (v *Viper) mergeFlatMap(shadow map[string]bool, m map[string]interface{}) map[string]bool {
// scan keys // scan keys
outer: outer:
for k, _ := range m { for k := range m {
path := strings.Split(k, v.keyDelim) path := strings.Split(k, v.keyDelim)
// scan intermediate paths // scan intermediate paths
var parentKey string var parentKey string
@ -1765,6 +1966,12 @@ func (v *Viper) SetConfigType(in string) {
} }
} }
// SetConfigPermissions sets the permissions for the config file.
func SetConfigPermissions(perm os.FileMode) { v.SetConfigPermissions(perm) }
func (v *Viper) SetConfigPermissions(perm os.FileMode) {
v.configPermissions = perm.Perm()
}
func (v *Viper) getConfigType() string { func (v *Viper) getConfigType() string {
if v.configType != "" { if v.configType != "" {
return v.configType return v.configType
@ -1805,6 +2012,12 @@ func (v *Viper) searchInPath(in string) (filename string) {
} }
} }
if v.configType != "" {
if b, _ := exists(v.fs, filepath.Join(in, v.configName)); b {
return filepath.Join(in, v.configName)
}
}
return "" return ""
} }

1040
viper_test.go
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