diff --git a/.editorconfig b/.editorconfig new file mode 100644 index 000000000..63afcbcdd --- /dev/null +++ b/.editorconfig @@ -0,0 +1,15 @@ +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 diff --git a/.github/.editorconfig b/.github/.editorconfig new file mode 100644 index 000000000..7bd3346f2 --- /dev/null +++ b/.github/.editorconfig @@ -0,0 +1,2 @@ +[*.yml] +indent_size = 2 diff --git a/.github/ISSUE_TEMPLATE/bug_report.md b/.github/ISSUE_TEMPLATE/bug_report.md new file mode 100644 index 000000000..de8e272d2 --- /dev/null +++ b/.github/ISSUE_TEMPLATE/bug_report.md @@ -0,0 +1,34 @@ +--- +name: 🐛 Bug report +about: Report a bug to help us improve Viper +labels: kind/bug +--- + + +**Expected behavior (what you expected to happen)**: + +**Actual behavior (what actually happened)**: + +**Repl.it link**: + + +**Code reproducing the issue**: + + +```go + +``` + + + +**Environment**: +- Viper version: +- Config source: +- File format: + +**Anything else we should know?**: diff --git a/.github/ISSUE_TEMPLATE/config.yml b/.github/ISSUE_TEMPLATE/config.yml new file mode 100644 index 000000000..cd537e839 --- /dev/null +++ b/.github/ISSUE_TEMPLATE/config.yml @@ -0,0 +1,13 @@ +blank_issues_enabled: false +contact_links: + - name: ❓ Ask a question + url: https://github.com/spf13/viper/discussions/new?category=q-a + about: Ask and discuss questions with other Viper community members + + - name: 📓 Reference + url: https://pkg.go.dev/mod/github.com/spf13/viper + about: Check the Go code reference + + - name: 💬 Slack channel + url: https://gophers.slack.com/messages/viper + about: Please ask and answer questions here diff --git a/.github/ISSUE_TEMPLATE/feature_request.md b/.github/ISSUE_TEMPLATE/feature_request.md new file mode 100644 index 000000000..22056f91f --- /dev/null +++ b/.github/ISSUE_TEMPLATE/feature_request.md @@ -0,0 +1,21 @@ +--- +name: 🚀 Feature request +about: Suggest an idea for Viper +labels: kind/enhancement +--- + + +**Is your feature request related to a problem? Please describe.** + + +**Describe the solution you'd like to see** + + +**Describe alternatives you've considered** + + +**Additional context** + diff --git a/.github/PULL_REQUEST_TEMPLATES.md b/.github/PULL_REQUEST_TEMPLATES.md new file mode 100644 index 000000000..fb6ea68ce --- /dev/null +++ b/.github/PULL_REQUEST_TEMPLATES.md @@ -0,0 +1,20 @@ + + +**Overview**: + + +**What problem does it solve?**: + + +**Special notes for a reviewer**: diff --git a/.github/logo.png b/.github/logo.png new file mode 100644 index 000000000..10642684f Binary files /dev/null and b/.github/logo.png differ diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml new file mode 100644 index 000000000..e0a626018 --- /dev/null +++ b/.github/workflows/ci.yml @@ -0,0 +1,35 @@ +name: CI + +on: + push: + branches: + - master + pull_request: + +jobs: + build: + name: Build + runs-on: ${{ matrix.os }} + strategy: + matrix: + os: [ubuntu-latest, macos-latest] + go: ['1.14', '1.15', '1.16'] + 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 diff --git a/.github/workflows/feedback_issue.yml b/.github/workflows/feedback_issue.yml new file mode 100644 index 000000000..5730d8632 --- /dev/null +++ b/.github/workflows/feedback_issue.yml @@ -0,0 +1,32 @@ +on: + issues: + types: [opened] + +jobs: + comment: + runs-on: ubuntu-latest + steps: + - uses: actions/github-script@v3 + with: + github-token: ${{secrets.GITHUB_TOKEN}} + script: | + github.issues.createComment({ + issue_number: context.issue.number, + owner: context.repo.owner, + repo: context.repo.repo, + body: `👋 Thanks for reporting! + + A maintainer will take a look at your issue shortly. 👀 + + In the meantime: We are working on **Viper v2** and we would love to hear your thoughts about what you like or don't like about Viper, so we can improve or fix those issues. + + ⏰ If you have a couple minutes, please take some time and share your thoughts: https://forms.gle/R6faU74qPRPAzchZ9 + + 📣 If you've already given us your feedback, you can still help by spreading the news, + either by sharing the above link or telling people about this on Twitter: + + https://twitter.com/sagikazarmark/status/1306904078967074816 + + **Thank you!** ❤️ + `, + }) diff --git a/.github/workflows/feedback_pull_request.yml b/.github/workflows/feedback_pull_request.yml new file mode 100644 index 000000000..807b573b3 --- /dev/null +++ b/.github/workflows/feedback_pull_request.yml @@ -0,0 +1,32 @@ +on: + pull_request_target: + types: [opened] + +jobs: + comment: + runs-on: ubuntu-latest + steps: + - uses: actions/github-script@v3 + with: + github-token: ${{secrets.GITHUB_TOKEN}} + script: | + github.issues.createComment({ + issue_number: context.issue.number, + owner: context.repo.owner, + repo: context.repo.repo, + body: `👋 Thanks for contributing to Viper! You are awesome! 🎉 + + A maintainer will take a look at your pull request shortly. 👀 + + In the meantime: We are working on **Viper v2** and we would love to hear your thoughts about what you like or don't like about Viper, so we can improve or fix those issues. + + ⏰ If you have a couple minutes, please take some time and share your thoughts: https://forms.gle/R6faU74qPRPAzchZ9 + + 📣 If you've already given us your feedback, you can still help by spreading the news, + either by sharing the above link or telling people about this on Twitter: + + https://twitter.com/sagikazarmark/status/1306904078967074816 + + **Thank you!** ❤️ + `, + }) diff --git a/.gitignore b/.gitignore index 01b5c44b9..896250839 100644 --- a/.gitignore +++ b/.gitignore @@ -1,29 +1,5 @@ -# Compiled Object files, Static and Dynamic libs (Shared Objects) -*.o -*.a -*.so - -# 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 +/.idea/ +/bin/ +/build/ +/var/ +/vendor/ diff --git a/.golangci.yml b/.golangci.yml new file mode 100644 index 000000000..a7b738105 --- /dev/null +++ b/.golangci.yml @@ -0,0 +1,76 @@ +run: + timeout: 5m + +linters-settings: + gci: + local-prefixes: github.com/spf13/viper + golint: + min-confidence: 0 + goimports: + local-prefixes: github.com/spf13/viper + +linters: + disable-all: true + enable: + - bodyclose + - deadcode + - dogsled + - dupl + - exhaustive + - exportloopref + - gci + - goconst + - gofmt + - gofumpt + - goimports + - golint + - goprintffuncname + - govet + - ineffassign + - misspell + - nakedret + - noctx + - nolintlint + - prealloc + - rowserrcheck + - sqlclosecheck + - staticcheck + - structcheck + - stylecheck + - typecheck + - unconvert + - unparam + - unused + - varcheck + - whitespace + + # fixme + # - errcheck + # - gochecknoglobals + # - gochecknoinits + # - gocognit + # - gocritic + # - gocyclo + # - godot + # - gosec + # - gosimple + # - lll + # - nlreturn + # - scopelint + + # unused + # - depguard + # - goheader + # - gomodguard + + # don't enable: + # - asciicheck + # - funlen + # - godox + # - goerr113 + # - gomnd + # - interfacer + # - maligned + # - nestif + # - testpackage + # - wsl diff --git a/.travis.yml b/.travis.yml deleted file mode 100644 index bb83057ba..000000000 --- a/.travis.yml +++ /dev/null @@ -1,31 +0,0 @@ -go_import_path: github.com/spf13/viper - -language: go - -env: - global: - - GO111MODULE="on" - -go: - - 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 diff --git a/Makefile b/Makefile new file mode 100644 index 000000000..b1796c9d7 --- /dev/null +++ b/Makefile @@ -0,0 +1,76 @@ +# 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 = 0.5.3 +GOLANGCI_VERSION = 1.31.0 + +# 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 $*=$($*) diff --git a/README.md b/README.md index 2040cfe4c..9a53ed4bb 100644 --- a/README.md +++ b/README.md @@ -1,6 +1,20 @@ -![viper logo](https://cloud.githubusercontent.com/assets/173412/10886745/998df88a-8151-11e5-9448-4736db51020d.png) +> ## Viper v2 feedback +> Viper is heading towards v2 and we would love to hear what _**you**_ would like to see in it. Share your thoughts here: https://forms.gle/R6faU74qPRPAzchZ9 +> +> **Thank you!** -Go configuration with fangs! +![Viper](.github/logo.png?raw=true) + +[![Mentioned in Awesome Go](https://awesome.re/mentioned-badge-flat.svg)](https://github.com/avelino/awesome-go#configuration) +[![run on repl.it](https://repl.it/badge/github/sagikazarmark/Viper-example)](https://repl.it/@sagikazarmark/Viper-example#main.go) + +[![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 Version](https://img.shields.io/badge/go%20version-%3E=1.14-61CFDD.svg?style=flat-square) +[![PkgGoDev](https://pkg.go.dev/badge/mod/github.com/spf13/viper)](https://pkg.go.dev/mod/github.com/spf13/viper) + +**Go configuration with fangs!** Many Go projects are built using Viper including: @@ -12,8 +26,16 @@ Many Go projects are built using Viper including: * [BloomApi](https://www.bloomapi.com/) * [doctl](https://github.com/digitalocean/doctl) * [Clairctl](https://github.com/jgsqware/clairctl) +* [Mercure](https://mercure.rocks) + + +## Install + +```shell +go get github.com/spf13/viper +``` -[![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) +**Note:** Viper uses [Go Modules](https://github.com/golang/go/wiki/Modules) to manage dependencies. ## What is Viper? @@ -23,7 +45,7 @@ to work within an application, and can handle all types of configuration needs and formats. It supports: * 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) * reading from environment variables * reading from remote config systems (etcd or Consul), and watching changes @@ -31,8 +53,8 @@ and formats. It supports: * reading from buffer * setting explicit values -Viper can be thought of as a registry for all of your applications -configuration needs. +Viper can be thought of as a registry for all of your applications configuration needs. + ## Why Viper? @@ -42,35 +64,31 @@ Viper is here to help with that. Viper does the following for you: -1. Find, load, and unmarshal a configuration file in JSON, TOML, YAML, HCL, or Java properties formats. -2. Provide a mechanism to set default values for your different - configuration options. -3. Provide a mechanism to set override values for options specified through - command line flags. -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. +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 configuration options. +3. Provide a mechanism to set override values for options specified through command line flags. +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 -item below it: +Viper uses the following precedence order. Each item takes precedence over the item below it: - * explicit call to Set + * explicit call to `Set` * flag * env * config * key/value store * default -Viper configuration keys are case insensitive by default. They can be made case -sensitive with `viper.SetKeysCaseSensitive(true)`. +**Important:** Viper configuration keys are case insensitive by default. +There are ongoing discussions about making that optional. +Case sensitivy can, for now, be enabled with `viper.SetKeysCaseSensitive(true)`. ## Putting Values into Viper ### Establishing Defaults 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. Examples: @@ -84,7 +102,7 @@ viper.SetDefault("Taxonomies", map[string]string{"tag": "tags", "category": "cat ### Reading 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. Viper does not default to any configuration search paths leaving defaults decision to an application. @@ -95,6 +113,7 @@ where a configuration file is expected. ```go 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("$HOME/.appname") // call multiple times to add many search paths viper.AddConfigPath(".") // optionally look for config in the working directory @@ -104,6 +123,44 @@ 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 Viper supports the ability to have your application live read a config file while running. @@ -187,7 +244,7 @@ with ENV: * `BindEnv(string...) : error` * `SetEnvPrefix(string)` * `SetEnvKeyReplacer(string...) *strings.Replacer` - * `AllowEmptyEnvVar(bool)` + * `AllowEmptyEnv(bool)` _When working with ENV variables, it’s important to recognize that Viper treats ENV variables as case sensitive._ @@ -197,12 +254,13 @@ using `SetEnvPrefix`, you can tell Viper to use a prefix while reading from the environment variables. Both `BindEnv` and `AutomaticEnv` will use this prefix. -`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 -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, -but the ENV variable is IN ALL CAPS. When you explicitly provide the ENV -variable name, it **does not** automatically add the prefix. +`BindEnv` takes one or more parameters. The first parameter is the key name, the +rest are the name of the environment variables to bind to this key. If more than +one are provided, they will take precedence in the specified order. The name of +the environment variable is case sensitive. If the ENV variable name is not provided, then +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), +it **does not** automatically add the prefix. For example if the second parameter is "id", +Viper will look for the ENV variable "ID". 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 @@ -211,7 +269,7 @@ the `BindEnv` is called. `AutomaticEnv` is a powerful helper especially when combined with `SetEnvPrefix`. When called, Viper will check for an environment variable any time a `viper.Get` request is made. It will apply the following rules. It will -check for a environment variable with a name matching the key uppercased and +check for an environment variable with a name matching the key uppercased and prefixed with the `EnvPrefix` if set. `SetEnvKeyReplacer` allows you to use a `strings.Replacer` object to rewrite Env @@ -219,6 +277,9 @@ 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 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. @@ -347,12 +408,12 @@ package: `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 default values, but are overridden by configuration values retrieved from disk, 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 values encrypted and have them automatically decrypted if you have the correct gpg keyring. Encryption is optional. @@ -364,7 +425,7 @@ independently of it. K/V store. `crypt` defaults to etcd on http://127.0.0.1:4001. ```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 ``` @@ -382,12 +443,12 @@ how to use Consul. #### etcd ```go 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() ``` #### 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: ```json @@ -406,11 +467,21 @@ fmt.Println(viper.Get("port")) // 8080 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 ```go 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() ``` @@ -421,7 +492,7 @@ err := viper.ReadRemoteConfig() var runtime_viper = viper.New() 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. err := runtime_viper.ReadRemoteConfig() @@ -457,6 +528,7 @@ The following functions and methods exist: * `GetBool(key string) : bool` * `GetFloat64(key string) : float64` * `GetInt(key string) : int` + * `GetIntSlice(key string) : []int` * `GetString(key string) : string` * `GetStringMap(key string) : map[string]interface{}` * `GetStringMapString(key string) : map[string]string` @@ -520,6 +592,33 @@ the `Set()` method, …) with an immediate value, then all sub-keys of `datastore.metric` become undefined, they are “shadowed” by the higher-priority configuration level. +Viper can access array indices by using numbers in the path. For example: + +```json +{ + "host": { + "address": "localhost", + "ports": [ + 5799, + 6029 + ] + }, + "datastore": { + "metric": { + "host": "127.0.0.1", + "port": 3099 + }, + "warehouse": { + "host": "198.0.0.1", + "port": 2112 + } + } +} + +GetInt("host.ports.1") // returns 6029 + +``` + Lastly, if there exists a key that matches the delimited key path, its value will be returned instead. E.g. @@ -545,14 +644,15 @@ will be returned instead. E.g. GetString("datastore.metric.host") // returns "0.0.0.0" ``` -### Extract sub-tree +### Extracting a sub-tree -Extract sub-tree from Viper. +When developing reusable modules, it's often useful to extract a subset of the configuration +and pass it to a module. This way the module can be instantiated more than once, with different configurations. -For example, `viper` represents: +For example, an application might use multiple different cache stores for different purposes: -```json -app: +```yaml +cache: cache1: max-items: 100 item-size: 64 @@ -561,35 +661,36 @@ app: item-size: 80 ``` -After executing: +We could pass the cache name to a module (eg. `NewCache("cache1")`), +but it would require weird concatenation for accessing config keys and would be less separated from the global config. -```go -subv := viper.Sub("app.cache1") -``` +So instead of doing that let's pass a Viper instance to the constructor that represents a subset of the configuration: -`subv` represents: +```go +cache1Config := viper.Sub("cache.cache1") +if cache1Config == nil { // Sub returns nil if the key cannot be found + panic("cache configuration not found") +} -```json -max-items: 100 -item-size: 64 +cache1 := NewCache(cache1Config) ``` -Suppose we have: +**Note:** Always check the return value of `Sub`. It returns `nil` if a key cannot be found. + +Internally, the `NewCache` function can address `max-items` and `item-size` keys directly: ```go -func NewCache(cfg *Viper) *Cache {...} +func NewCache(v *Viper) *Cache { + return &Cache{ + MaxItems: v.GetInt("max-items"), + ItemSize: v.GetInt("item-size"), + } +} ``` -which creates a cache based on config information formatted as `subv`. -Now it’s easy to create these 2 caches separately as: - -```go -cfg1 := viper.Sub("app.cache1") -cache1 := NewCache(cfg1) +The resulting code is easy to test, since it's decoupled from the main config structure, +and easier to reuse (for the same reason). -cfg2 := viper.Sub("app.cache2") -cache2 := NewCache(cfg2) -``` ### Unmarshaling @@ -612,30 +713,89 @@ type config struct { var C config -err := Unmarshal(&C) +err := viper.Unmarshal(&C) if err != nil { 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 -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()`. ```go import ( yaml "gopkg.in/yaml.v2" // ... -) +) func yamlStringSettings() string { c := viper.AllSettings() - bs, err := yaml.Marshal(c) - if err != nil { - t.Fatalf("unable to marshal config to YAML: %v", err) + bs, err := yaml.Marshal(c) + if err != nil { + log.Fatalf("unable to marshal config to YAML: %v", err) } - return string(bs) + return string(bs) } ``` @@ -671,22 +831,35 @@ y.SetDefault("ContentDir", "foobar") When working with multiple vipers, it is up to the user to keep track of the different vipers. -## 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 & A -Q: Why is it called “Viper”? +### Why is it called “Viper”? A: Viper is designed to be a [companion](http://en.wikipedia.org/wiki/Viper_(G.I._Joe)) to [Cobra](https://github.com/spf13/cobra). While both can operate completely independently, together they make a powerful pair to handle much of your application foundation needs. -Q: Why is it called “Cobra”? +### Why is it called “Cobra”? + +Is there a better name for a [commander](http://en.wikipedia.org/wiki/Cobra_Commander)? + +### Does Viper support case sensitive keys? + +**tl;dr:** No. + +Viper merges configuration from various sources, many of which are either case insensitive or uses different casing than the rest of the sources (eg. env vars). +In order to provide the best experience when using multiple sources, the decision has been made to make all keys case insensitive. + +There has been several attempts to implement case sensitivity, but unfortunately it's not that trivial. We might take a stab at implementing it in [Viper v2](https://github.com/spf13/viper/issues/772), but despite the initial noise, it does not seem to be requested that much. + +You can vote for case sensitivity by filling out this feedback form: https://forms.gle/R6faU74qPRPAzchZ9 + +### Is it safe to concurrently read and write to a viper? + +No, you will need to synchronize access to the viper yourself (for example by using the `sync` package). Concurrent reads and writes can cause a panic. + +## Troubleshooting -A: Is there a better name for a [commander](http://en.wikipedia.org/wiki/Cobra_Commander)? +See [TROUBLESHOOTING.md](TROUBLESHOOTING.md). diff --git a/TROUBLESHOOTING.md b/TROUBLESHOOTING.md new file mode 100644 index 000000000..096277af7 --- /dev/null +++ b/TROUBLESHOOTING.md @@ -0,0 +1,23 @@ +# Troubleshooting + +## Unmarshaling doesn't work + +The most common reason for this issue is improper use of struct tags (eg. `yaml` or `json`). Viper uses [github.com/mitchellh/mapstructure](https://github.com/mitchellh/mapstructure) under the hood for unmarshaling values which uses `mapstructure` tags by default. Please refer to the library's documentation for using other struct tags. + +## Cannot find package + +Viper installation seems to fail a lot lately with the following (or a similar) error: + +``` +cannot find package "github.com/hashicorp/hcl/tree/hcl1" in any of: +/usr/local/Cellar/go/1.15.7_1/libexec/src/github.com/hashicorp/hcl/tree/hcl1 (from $GOROOT) +/Users/user/go/src/github.com/hashicorp/hcl/tree/hcl1 (from $GOPATH) +``` + +As the error message suggests, Go tries to look up dependencies in `GOPATH` mode (as it's commonly called) from the `GOPATH`. +Viper opted to use [Go Modules](https://github.com/golang/go/wiki/Modules) to manage its dependencies. While in many cases the two methods are interchangeable, once a dependency releases new (major) versions, `GOPATH` mode is no longer able to decide which version to use, so it'll either use one that's already present or pick a version (usually the `master` branch). + +The solution is easy: switch to using Go Modules. +Please refer to the [wiki](https://github.com/golang/go/wiki/Modules) on how to do that. + +**tl;dr* `export GO111MODULE=on` diff --git a/flags.go b/flags.go index dd32f4e1c..b5ddbf5d4 100644 --- a/flags.go +++ b/flags.go @@ -36,7 +36,7 @@ type pflagValue struct { 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 { return p.flag.Changed } diff --git a/flags_test.go b/flags_test.go index 0b976b605..a22e31b46 100644 --- a/flags_test.go +++ b/flags_test.go @@ -10,13 +10,13 @@ import ( func TestBindFlagValueSet(t *testing.T) { flagSet := pflag.NewFlagSet("test", pflag.ContinueOnError) - var testValues = map[string]*string{ + testValues := map[string]*string{ "host": nil, "port": nil, "endpoint": nil, } - var mutatedTestValues = map[string]string{ + mutatedTestValues := map[string]string{ "host": "localhost", "port": "6060", "endpoint": "/public", @@ -44,8 +44,8 @@ func TestBindFlagValueSet(t *testing.T) { } func TestBindFlagValue(t *testing.T) { - var testString = "testing" - var testValue = newStringValue(testString, &testString) + testString := "testing" + testValue := newStringValue(testString, &testString) flag := &pflag.Flag{ Name: "testflag", @@ -59,7 +59,7 @@ func TestBindFlagValue(t *testing.T) { assert.Equal(t, testString, Get("testvalue")) flag.Value.Set("testing_mutate") - flag.Changed = true //hack for pflag usage + flag.Changed = true // hack for pflag usage assert.Equal(t, "testing_mutate", Get("testvalue")) } diff --git a/go.mod b/go.mod index 905c8443b..b25170199 100644 --- a/go.mod +++ b/go.mod @@ -1,43 +1,28 @@ module github.com/cloudian/viper +go 1.12 + require ( - github.com/armon/consul-api v0.0.0-20180202201655-eb2c6b5be1b6 // indirect + github.com/bketelsen/crypt v0.0.3-0.20200106085610-5cbc8cc4026c github.com/coreos/bbolt v1.3.2 // indirect - github.com/coreos/etcd v3.3.10+incompatible // indirect - github.com/coreos/go-semver v0.2.0 // 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/gogo/protobuf v1.2.1 // indirect - github.com/golang/groupcache v0.0.0-20190129154638-5b532d6fd5ef // indirect - github.com/google/btree v1.0.0 // indirect - github.com/gorilla/websocket v1.4.0 // 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/jonboulle/clockwork v0.1.0 // indirect - github.com/magiconair/properties v1.8.0 - github.com/mitchellh/mapstructure v1.0.0 + github.com/magiconair/properties v1.8.1 + github.com/mitchellh/mapstructure v1.3.3 github.com/pelletier/go-toml v1.2.0 - github.com/prometheus/client_golang v0.9.3 // indirect - github.com/soheilhy/cmux v0.1.4 // indirect - github.com/spf13/afero v1.1.2 + github.com/prometheus/client_golang v1.10.0 // indirect + github.com/sirupsen/logrus v1.8.1 // indirect + github.com/soheilhy/cmux v0.1.5 // indirect + github.com/spf13/afero v1.5.1 github.com/spf13/cast v1.3.0 github.com/spf13/jwalterweatherman v1.0.0 github.com/spf13/pflag v1.0.3 - github.com/stretchr/testify v1.2.2 + github.com/spf13/viper v1.7.1 + github.com/stretchr/testify v1.4.0 + github.com/subosito/gotenv v1.2.0 github.com/tmc/grpc-websocket-proxy v0.0.0-20190109142713-0ad062ec5ee5 // indirect - github.com/ugorji/go v1.1.4 // indirect - github.com/xiang90/probing v0.0.0-20190116061207-43a291ad63a2 // indirect - github.com/xordataexchange/crypt v0.0.3-0.20170626215501-b2862e3d0a77 - 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 - golang.org/x/net v0.0.0-20190522155817-f3200d17e092 // indirect - golang.org/x/time v0.0.0-20190308202827-9d24e82272b4 // indirect - google.golang.org/grpc v1.21.0 // indirect - gopkg.in/yaml.v2 v2.2.2 + gopkg.in/ini.v1 v1.51.0 + gopkg.in/yaml.v2 v2.3.0 ) diff --git a/go.sum b/go.sum index 97afaffe2..015c5be21 100644 --- a/go.sum +++ b/go.sum @@ -1,178 +1,616 @@ 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 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h1:hI742Nqp5OhwiqlzhgfbWU4mW4yO10fP+LoT9WOswdU= diff --git a/internal/testutil/env.go b/internal/testutil/env.go new file mode 100644 index 000000000..e5eaddd7f --- /dev/null +++ b/internal/testutil/env.go @@ -0,0 +1,42 @@ +package testutil + +import ( + "os" + "testing" +) + +// Based on https://github.com/frankban/quicktest/blob/577841610793d24f99e31cc2c0ef3a541fefd7c7/patch.go#L34-L64 +// Licensed under the MIT license +// Copyright (c) 2017 Canonical Ltd. + +// Setenv sets an environment variable to a temporary value for the +// duration of the test. +// +// At the end of the test (see "Deferred execution" in the package docs), the +// environment variable is returned to its original value. +func Setenv(t *testing.T, name, val string) { + setenv(t, name, val, true) +} + +// Unsetenv unsets an environment variable for the duration of a test. +func Unsetenv(t *testing.T, name string) { + setenv(t, name, "", false) +} + +// setenv sets or unsets an environment variable to a temporary value for the +// duration of the test +func setenv(t *testing.T, name, val string, valOK bool) { + oldVal, oldOK := os.LookupEnv(name) + if valOK { + os.Setenv(name, val) + } else { + os.Unsetenv(name) + } + t.Cleanup(func() { + if oldOK { + os.Setenv(name, oldVal) + } else { + os.Unsetenv(name) + } + }) +} diff --git a/overrides_test.go b/overrides_test.go index dd2aa9b0d..8048204cf 100644 --- a/overrides_test.go +++ b/overrides_test.go @@ -78,6 +78,7 @@ func TestNestedOverrides(t *testing.T) { func overrideDefault(assert *assert.Assertions, firstPath string, firstValue interface{}, secondPath string, secondValue interface{}) *Viper { return overrideFromLayer(defaultLayer, assert, firstPath, firstValue, secondPath, secondValue) } + func override(assert *assert.Assertions, firstPath string, firstValue interface{}, secondPath string, secondValue interface{}) *Viper { return overrideFromLayer(overrideLayer, assert, firstPath, firstValue, secondPath, secondValue) } diff --git a/remote/remote.go b/remote/remote.go index 810d0702e..ac3ef2623 100644 --- a/remote/remote.go +++ b/remote/remote.go @@ -11,8 +11,9 @@ import ( "io" "os" + crypt "github.com/bketelsen/crypt/config" + "github.com/spf13/viper" - crypt "github.com/xordataexchange/crypt/config" ) type remoteConfigProvider struct{} @@ -63,9 +64,7 @@ func (rc remoteConfigProvider) WatchChannel(rp viper.RemoteProvider) (<-chan *vi Error: resp.Error, Value: resp.Value, } - } - } }(cryptoResponseCh, viperResponsCh, quitwc, quit) @@ -77,20 +76,27 @@ func getConfigManager(rp viper.RemoteProvider) (crypt.ConfigManager, error) { var err error if rp.SecretKeyring() != "" { - kr, err := os.Open(rp.SecretKeyring()) - defer kr.Close() + var kr *os.File + kr, err = os.Open(rp.SecretKeyring()) if err != nil { return nil, err } - if rp.Provider() == "etcd" { + defer kr.Close() + switch rp.Provider() { + case "etcd": 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) } } else { - if rp.Provider() == "etcd" { + switch rp.Provider() { + case "etcd": 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()}) } } diff --git a/util.go b/util.go index 952cad44c..cee6b2429 100644 --- a/util.go +++ b/util.go @@ -91,13 +91,22 @@ func insensitiviseMap(m map[string]interface{}) { func absPathify(inPath string) string { jww.INFO.Println("Trying to resolve absolute path to", inPath) - if strings.HasPrefix(inPath, "$HOME") { + if inPath == "$HOME" || strings.HasPrefix(inPath, "$HOME"+string(os.PathSeparator)) { inPath = userHomeDir() + inPath[5:] } if strings.HasPrefix(inPath, "$") { end := strings.Index(inPath, string(os.PathSeparator)) - inPath = os.Getenv(inPath[1:end]) + inPath[end:] + + var value, suffix string + if end == -1 { + value = os.Getenv(inPath[1:]) + } else { + value = os.Getenv(inPath[1:end]) + suffix = inPath[end:] + } + + inPath = value + suffix } if filepath.IsAbs(inPath) { @@ -114,11 +123,11 @@ func absPathify(inPath string) string { return "" } -// Check if File / Directory Exists +// Check if file Exists func exists(fs afero.Fs, path string) (bool, error) { - _, err := fs.Stat(path) + stat, err := fs.Stat(path) if err == nil { - return true, nil + return !stat.IsDir(), nil } if os.IsNotExist(err) { return false, nil diff --git a/util_test.go b/util_test.go index 0af80bb63..a377d5b95 100644 --- a/util_test.go +++ b/util_test.go @@ -11,8 +11,12 @@ package viper import ( + "os" + "path/filepath" "reflect" "testing" + + "github.com/spf13/viper/internal/testutil" ) func TestCopyAndInsensitiviseMap(t *testing.T) { @@ -22,14 +26,16 @@ func TestCopyAndInsensitiviseMap(t *testing.T) { "Bar": map[interface{}]interface { }{ "ABc": "A", - "cDE": "B"}, + "cDE": "B", + }, } expected = map[string]interface{}{ "foo": 32, "bar": map[string]interface { }{ "abc": "A", - "cde": "B"}, + "cde": "B", + }, } ) @@ -52,3 +58,38 @@ func TestCopyAndInsensitiviseMap(t *testing.T) { t.Fatal("Input map changed") } } + +func TestAbsPathify(t *testing.T) { + home := userHomeDir() + homer := filepath.Join(home, "homer") + wd, _ := os.Getwd() + + testutil.Setenv(t, "HOMER_ABSOLUTE_PATH", homer) + testutil.Setenv(t, "VAR_WITH_RELATIVE_PATH", "relative") + + tests := []struct { + input string + output string + }{ + {"", wd}, + {"sub", filepath.Join(wd, "sub")}, + {"./", wd}, + {"./sub", filepath.Join(wd, "sub")}, + {"$HOME", home}, + {"$HOME/", home}, + {"$HOME/sub", filepath.Join(home, "sub")}, + {"$HOMER_ABSOLUTE_PATH", homer}, + {"$HOMER_ABSOLUTE_PATH/", homer}, + {"$HOMER_ABSOLUTE_PATH/sub", filepath.Join(homer, "sub")}, + {"$VAR_WITH_RELATIVE_PATH", filepath.Join(wd, "relative")}, + {"$VAR_WITH_RELATIVE_PATH/", filepath.Join(wd, "relative")}, + {"$VAR_WITH_RELATIVE_PATH/sub", filepath.Join(wd, "relative", "sub")}, + } + + for _, test := range tests { + got := absPathify(test.input) + if got != test.output { + t.Errorf("Got %v\nexpected\n%q", got, test.output) + } + } +} diff --git a/viper.go b/viper.go index fb43aeb9c..b500d60e7 100644 --- a/viper.go +++ b/viper.go @@ -3,7 +3,7 @@ // Use of this source code is governed by an MIT-style // 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 // via flags, ENVIRONMENT variables, configuration files retrieved // from the file system, or a remote key/value store. @@ -23,28 +23,31 @@ import ( "bytes" "encoding/csv" "encoding/json" + "errors" "fmt" "io" "log" "os" "path/filepath" "reflect" + "strconv" "strings" "sync" "time" - yaml "gopkg.in/yaml.v2" - "github.com/fsnotify/fsnotify" "github.com/hashicorp/hcl" "github.com/hashicorp/hcl/hcl/printer" "github.com/magiconair/properties" "github.com/mitchellh/mapstructure" - toml "github.com/pelletier/go-toml" + "github.com/pelletier/go-toml" "github.com/spf13/afero" "github.com/spf13/cast" jww "github.com/spf13/jwalterweatherman" "github.com/spf13/pflag" + "github.com/subosito/gotenv" + "gopkg.in/ini.v1" + "gopkg.in/yaml.v2" ) // ConfigMarshalError happens when failing to marshal the configuration. @@ -114,6 +117,14 @@ func (fnfe ConfigFileNotFoundError) Error() string { 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 // mapstructure.DecoderConfig options type DecoderConfigOption func(*mapstructure.DecoderConfig) @@ -165,6 +176,8 @@ func DecodeHook(hook mapstructure.DecodeHookFunc) DecoderConfigOption { // "user": "root", // "endpoint": "https://localhost" // } +// +// Note: Vipers are not safe for concurrent Get() and Set() operations. type Viper struct { // Delimiter that separates a list of keys // used to access a nested value in one go @@ -187,7 +200,7 @@ type Viper struct { envPrefix string automaticEnvApplied bool - envKeyReplacer *strings.Replacer + envKeyReplacer StringReplacer allowEmptyEnv bool caseSensitiveKeys bool @@ -196,7 +209,7 @@ type Viper struct { defaults map[string]interface{} kvstore map[string]interface{} pflags map[string]FlagValue - env map[string]string + env map[string][]string aliases map[string]string typeByDefValue bool @@ -219,20 +232,66 @@ func New() *Viper { v.defaults = make(map[string]interface{}) v.kvstore = make(map[string]interface{}) v.pflags = make(map[string]FlagValue) - v.env = make(map[string]string) + v.env = make(map[string][]string) v.aliases = make(map[string]string) v.typeByDefValue = false 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 // can use it in their testing as well. func Reset() { v = New() - SupportedExts = []string{"json", "toml", "yaml", "yml", "properties", "props", "prop", "hcl"} - SupportedRemoteProviders = []string{"etcd", "consul"} + SupportedExts = []string{"json", "toml", "yaml", "yml", "properties", "props", "prop", "hcl", "dotenv", "env", "ini"} + SupportedRemoteProviders = []string{"etcd", "consul", "firestore"} } type defaultRemoteProvider struct { @@ -270,10 +329,10 @@ 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", "ini"} // 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 (v *Viper) OnConfigChange(run func(in fsnotify.Event)) { @@ -295,6 +354,7 @@ func (v *Viper) WatchConfig() { filename, err := v.getConfigFile() if err != nil { log.Printf("error: %v\n", err) + initWG.Done() return } @@ -344,7 +404,7 @@ func (v *Viper) WatchConfig() { } }() 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... }() initWG.Wait() // make sure that the go routine above fully ended before returning @@ -353,6 +413,7 @@ func (v *Viper) WatchConfig() { // SetConfigFile explicitly defines the path, name and extension of the config file. // Viper will use this and not check any of the config paths. func SetConfigFile(in string) { v.SetConfigFile(in) } + func (v *Viper) SetConfigFile(in string) { if in != "" { v.configFile = in @@ -363,6 +424,7 @@ func (v *Viper) SetConfigFile(in string) { // E.g. if your prefix is "spf", the env registry will look for env // variables that start with "SPF_". func SetEnvPrefix(in string) { v.SetEnvPrefix(in) } + func (v *Viper) SetEnvPrefix(in string) { if in != "" { v.envPrefix = in @@ -381,6 +443,7 @@ func (v *Viper) mergeWithEnvPrefix(in string) string { // 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 } @@ -409,6 +472,7 @@ func (v *Viper) ConfigFileUsed() string { return v.configFile } // AddConfigPath adds a path for Viper to search for the config file in. // Can be called multiple times to define multiple search paths. func AddConfigPath(in string) { v.AddConfigPath(in) } + func (v *Viper) AddConfigPath(in string) { if in != "" { absin := absPathify(in) @@ -421,7 +485,7 @@ func (v *Viper) AddConfigPath(in string) { // AddRemoteProvider adds a remote configuration source. // 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 // path is the path in the k/v store to retrieve configuration // To retrieve a config file called myapp.json from /configs/myapp.json @@ -430,6 +494,7 @@ func (v *Viper) AddConfigPath(in string) { func AddRemoteProvider(provider, endpoint, path string) error { return v.AddRemoteProvider(provider, endpoint, path) } + func (v *Viper) AddRemoteProvider(provider, endpoint, path string) error { if !stringInSlice(provider, SupportedRemoteProviders) { return UnsupportedRemoteProviderError(provider) @@ -450,14 +515,14 @@ func (v *Viper) AddRemoteProvider(provider, endpoint, path string) error { // AddSecureRemoteProvider adds a remote configuration source. // 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 // 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 // To retrieve a config file called myapp.json from /configs/myapp.json // you should set path to /configs and set config name (SetConfigName()) to // "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 { return v.AddSecureRemoteProvider(provider, endpoint, path, secretkeyring) } @@ -520,9 +585,9 @@ func (v *Viper) searchMap(source map[string]interface{}, path []string) interfac return nil } -// searchMapWithPathPrefixes recursively searches for a value for path in source map. +// searchIndexableWithPathPrefixes recursively searches for a value for path in source map/slice. // -// While searchMap() considers each path element as a single map key, this +// While searchMap() considers each path element as a single map key or slice index, this // function searches for, and prioritizes, merged path elements. // e.g., if in the source, "foo" is defined with a sub-key "bar", and "foo.bar" // is also defined, this latter value is returned for path ["foo", "bar"]. @@ -531,7 +596,7 @@ func (v *Viper) searchMap(source map[string]interface{}, path []string) interfac // in their keys). // // Note: This assumes that the path entries and map keys are lower cased. -func (v *Viper) searchMapWithPathPrefixes(source map[string]interface{}, path []string) interface{} { +func (v *Viper) searchIndexableWithPathPrefixes(source interface{}, path []string) interface{} { if len(path) == 0 { return source } @@ -540,28 +605,15 @@ func (v *Viper) searchMapWithPathPrefixes(source map[string]interface{}, path [] for i := len(path); i > 0; i-- { prefixKey := v.caseKey(strings.Join(path[0:i], v.keyDelim)) - next, ok := source[prefixKey] - if ok { - // Fast path - if i == len(path) { - return next - } - - // Nested case - var val interface{} - switch next.(type) { - case map[interface{}]interface{}: - val = v.searchMapWithPathPrefixes(cast.ToStringMap(next), path[i:]) - case map[string]interface{}: - // Type assertion is safe here since it is only reached - // if the type of `next` is the same as the type being asserted - val = v.searchMapWithPathPrefixes(next.(map[string]interface{}), path[i:]) - default: - // got a value but nested key expected, do nothing and look for next prefix - } - if val != nil { - return val - } + var val interface{} + switch sourceIndexable := source.(type) { + case []interface{}: + val = v.searchSliceWithPathPrefixes(sourceIndexable, prefixKey, i, path) + case map[string]interface{}: + val = v.searchMapWithPathPrefixes(sourceIndexable, prefixKey, i, path) + } + if val != nil { + return val } } @@ -569,6 +621,76 @@ func (v *Viper) searchMapWithPathPrefixes(source map[string]interface{}, path [] return nil } +// searchSliceWithPathPrefixes searches for a value for path in sourceSlice +// +// This function is part of the searchIndexableWithPathPrefixes recurring search and +// should not be called directly from functions other than searchIndexableWithPathPrefixes. +func (v *Viper) searchSliceWithPathPrefixes( + sourceSlice []interface{}, + prefixKey string, + pathIndex int, + path []string, +) interface{} { + // if the prefixKey is not a number or it is out of bounds of the slice + index, err := strconv.Atoi(prefixKey) + if err != nil || len(sourceSlice) <= index { + return nil + } + + next := sourceSlice[index] + + // Fast path + if pathIndex == len(path) { + return next + } + + switch n := next.(type) { + case map[interface{}]interface{}: + return v.searchIndexableWithPathPrefixes(cast.ToStringMap(n), path[pathIndex:]) + case map[string]interface{}, []interface{}: + return v.searchIndexableWithPathPrefixes(n, path[pathIndex:]) + default: + // got a value but nested key expected, do nothing and look for next prefix + } + + // not found + return nil +} + +// searchMapWithPathPrefixes searches for a value for path in sourceMap +// +// This function is part of the searchIndexableWithPathPrefixes recurring search and +// should not be called directly from functions other than searchIndexableWithPathPrefixes. +func (v *Viper) searchMapWithPathPrefixes( + sourceMap map[string]interface{}, + prefixKey string, + pathIndex int, + path []string, +) interface{} { + next, ok := sourceMap[prefixKey] + if !ok { + return nil + } + + // Fast path + if pathIndex == len(path) { + return next + } + + // Nested case + switch n := next.(type) { + case map[interface{}]interface{}: + return v.searchIndexableWithPathPrefixes(cast.ToStringMap(n), path[pathIndex:]) + case map[string]interface{}, []interface{}: + return v.searchIndexableWithPathPrefixes(n, path[pathIndex:]) + default: + // got a value but nested key expected, do nothing and look for next prefix + } + + // not found + return nil +} + // isPathShadowedInDeepMap makes sure the given path is not shadowed somewhere // on its path in the map. // e.g., if "foo.bar" has a value in the given map, it “shadows” @@ -649,6 +771,7 @@ func (v *Viper) isPathShadowedInAutoEnv(path []string) string { // // "a b c" func SetTypeByDefaultValue(enable bool) { v.SetTypeByDefaultValue(enable) } + func (v *Viper) SetTypeByDefaultValue(enable bool) { v.typeByDefValue = enable } @@ -666,9 +789,10 @@ func GetViper() *Viper { // // Get returns an interface. For a specific value use one of the Get____ methods. func Get(key string) interface{} { return v.Get(key) } + func (v *Viper) Get(key string) interface{} { casedKey := v.caseKey(key) - val := v.find(casedKey) + val := v.find(casedKey, true) if val == nil { return nil } @@ -705,6 +829,8 @@ func (v *Viper) Get(key string) interface{} { return cast.ToDuration(val) case []string: return cast.ToStringSlice(val) + case []int: + return cast.ToIntSlice(val) } } @@ -714,6 +840,7 @@ func (v *Viper) Get(key string) interface{} { // Sub returns new Viper instance representing a sub tree of this instance. // Sub's case-sensitivity for key is determined by viper.keyCaseSensitivity. func Sub(key string) *Viper { return v.Sub(key) } + func (v *Viper) Sub(key string) *Viper { subv := New() data := v.Get(key) @@ -730,90 +857,112 @@ func (v *Viper) Sub(key string) *Viper { // GetString returns the value associated with the key as a string. func GetString(key string) string { return v.GetString(key) } + func (v *Viper) GetString(key string) string { return cast.ToString(v.Get(key)) } // GetBool returns the value associated with the key as a boolean. func GetBool(key string) bool { return v.GetBool(key) } + func (v *Viper) GetBool(key string) bool { return cast.ToBool(v.Get(key)) } // GetInt returns the value associated with the key as an integer. func GetInt(key string) int { return v.GetInt(key) } + func (v *Viper) GetInt(key string) int { return cast.ToInt(v.Get(key)) } // GetInt32 returns the value associated with the key as an integer. func GetInt32(key string) int32 { return v.GetInt32(key) } + func (v *Viper) GetInt32(key string) int32 { return cast.ToInt32(v.Get(key)) } // GetInt64 returns the value associated with the key as an integer. func GetInt64(key string) int64 { return v.GetInt64(key) } + func (v *Viper) GetInt64(key string) int64 { 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. func GetFloat64(key string) float64 { return v.GetFloat64(key) } + func (v *Viper) GetFloat64(key string) float64 { return cast.ToFloat64(v.Get(key)) } // GetTime returns the value associated with the key as time. func GetTime(key string) time.Time { return v.GetTime(key) } + func (v *Viper) GetTime(key string) time.Time { return cast.ToTime(v.Get(key)) } // GetDuration returns the value associated with the key as a duration. func GetDuration(key string) time.Duration { return v.GetDuration(key) } + func (v *Viper) GetDuration(key string) time.Duration { 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. func GetStringSlice(key string) []string { return v.GetStringSlice(key) } + func (v *Viper) GetStringSlice(key string) []string { return cast.ToStringSlice(v.Get(key)) } // GetStringMap returns the value associated with the key as a map of interfaces. func GetStringMap(key string) map[string]interface{} { return v.GetStringMap(key) } + func (v *Viper) GetStringMap(key string) map[string]interface{} { return cast.ToStringMap(v.Get(key)) } // GetStringMapString returns the value associated with the key as a map of strings. func GetStringMapString(key string) map[string]string { return v.GetStringMapString(key) } + func (v *Viper) GetStringMapString(key string) map[string]string { return cast.ToStringMapString(v.Get(key)) } // GetStringMapStringSlice returns the value associated with the key as a map to a slice of strings. func GetStringMapStringSlice(key string) map[string][]string { return v.GetStringMapStringSlice(key) } + func (v *Viper) GetStringMapStringSlice(key string) map[string][]string { return cast.ToStringMapStringSlice(v.Get(key)) } @@ -821,6 +970,7 @@ func (v *Viper) GetStringMapStringSlice(key string) map[string][]string { // GetSizeInBytes returns the size of the value associated with the given key // in bytes. func GetSizeInBytes(key string) uint { return v.GetSizeInBytes(key) } + func (v *Viper) GetSizeInBytes(key string) uint { sizeStr := cast.ToString(v.Get(key)) return parseSizeInBytes(sizeStr) @@ -830,14 +980,9 @@ func (v *Viper) GetSizeInBytes(key string) uint { func UnmarshalKey(key string, rawVal interface{}, opts ...DecoderConfigOption) error { return v.UnmarshalKey(key, rawVal, opts...) } -func (v *Viper) UnmarshalKey(key string, rawVal interface{}, opts ...DecoderConfigOption) error { - err := decode(v.Get(key), defaultDecoderConfig(rawVal, opts...)) - - if err != nil { - return err - } - return nil +func (v *Viper) UnmarshalKey(key string, rawVal interface{}, opts ...DecoderConfigOption) error { + return decode(v.Get(key), defaultDecoderConfig(rawVal, opts...)) } // Unmarshal unmarshals the config into a Struct. Make sure that the tags @@ -845,14 +990,9 @@ func (v *Viper) UnmarshalKey(key string, rawVal interface{}, opts ...DecoderConf func Unmarshal(rawVal interface{}, opts ...DecoderConfigOption) error { return v.Unmarshal(rawVal, opts...) } -func (v *Viper) Unmarshal(rawVal interface{}, opts ...DecoderConfigOption) error { - err := decode(v.AllSettings(), defaultDecoderConfig(rawVal, opts...)) - if err != nil { - return err - } - - return nil +func (v *Viper) Unmarshal(rawVal interface{}, opts ...DecoderConfigOption) error { + return decode(v.AllSettings(), defaultDecoderConfig(rawVal, opts...)) } // defaultDecoderConfig returns default mapsstructure.DecoderConfig with suppot @@ -884,22 +1024,21 @@ func decode(input interface{}, config *mapstructure.DecoderConfig) error { // UnmarshalExact unmarshals the config into a Struct, erroring if a field is nonexistent // in the destination struct. -func (v *Viper) UnmarshalExact(rawVal interface{}) error { - config := defaultDecoderConfig(rawVal) - config.ErrorUnused = true - - err := decode(v.AllSettings(), config) +func UnmarshalExact(rawVal interface{}, opts ...DecoderConfigOption) error { + return v.UnmarshalExact(rawVal, opts...) +} - if err != nil { - return err - } +func (v *Viper) UnmarshalExact(rawVal interface{}, opts ...DecoderConfigOption) error { + config := defaultDecoderConfig(rawVal, opts...) + config.ErrorUnused = true - return nil + return decode(v.AllSettings(), config) } // BindPFlags binds a full flag set to the configuration, using each flag's long // name as the config key. func BindPFlags(flags *pflag.FlagSet) error { return v.BindPFlags(flags) } + func (v *Viper) BindPFlags(flags *pflag.FlagSet) error { return v.BindFlagValues(pflagValueSet{flags}) } @@ -911,13 +1050,18 @@ func (v *Viper) BindPFlags(flags *pflag.FlagSet) error { // Viper.BindPFlag("port", serverCmd.Flags().Lookup("port")) // func BindPFlag(key string, flag *pflag.Flag) error { return v.BindPFlag(key, flag) } + func (v *Viper) BindPFlag(key string, flag *pflag.Flag) error { + if flag == nil { + return fmt.Errorf("flag for %q is nil", key) + } return v.BindFlagValue(key, pflagValue{flag}) } // BindFlagValues binds a full FlagValue set to the configuration, using each flag's long // name as the config key. func BindFlagValues(flags FlagValueSet) error { return v.BindFlagValues(flags) } + func (v *Viper) BindFlagValues(flags FlagValueSet) (err error) { flags.VisitAll(func(flag FlagValue) { if err = v.BindFlagValue(flag.Name(), flag); err != nil { @@ -928,12 +1072,8 @@ func (v *Viper) BindFlagValues(flags FlagValueSet) (err error) { } // 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 (v *Viper) BindFlagValue(key string, flag FlagValue) error { if flag == nil { return fmt.Errorf("flag for %q is nil", key) @@ -945,34 +1085,38 @@ func (v *Viper) BindFlagValue(key string, flag FlagValue) error { // BindEnv binds a Viper key to a ENV variable. // ENV variables are case sensitive. // If only a key is provided, it will use the env key matching the key, uppercased. +// If more arguments are provided, they will represent the env variable names that +// should bind to this key and will be taken in the specified order. // EnvPrefix will be used when set when env name is not provided. func BindEnv(input ...string) error { return v.BindEnv(input...) } + func (v *Viper) BindEnv(input ...string) error { - var key, envkey string if len(input) == 0 { - return fmt.Errorf("BindEnv missing key to bind to") + return fmt.Errorf("missing key to bind to") } - key = v.caseKey(input[0]) + key := v.caseKey(input[0]) if len(input) == 1 { - envkey = v.mergeWithEnvPrefix(key) + v.env[key] = append(v.env[key], v.mergeWithEnvPrefix(key)) } else { - envkey = input[1] + v.env[key] = append(v.env[key], input[1:]...) } - v.env[key] = envkey - return nil } // 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. -// Note: By default, this assumes that a lowercase key is given. +// 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: By default, this assumes that a lowercase key is given. // This behavior can be modified with viper.SetKeysCaseSensitive. -func (v *Viper) find(key string) interface{} { +func (v *Viper) find(key string, flagDefault bool) interface{} { var ( val interface{} @@ -1013,6 +1157,13 @@ func (v *Viper) find(key string) interface{} { s = strings.TrimSuffix(s, "]") res, _ := readAsCSV(s) 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: return flag.ValueString() } @@ -1032,10 +1183,12 @@ func (v *Viper) find(key string) interface{} { return nil } } - envkey, exists := v.env[key] + envkeys, exists := v.env[key] if exists { - if val, ok := v.getEnv(envkey); ok { - return val + for _, envkey := range envkeys { + if val, ok := v.getEnv(envkey); ok { + return val + } } } if nested && v.isPathShadowedInFlatMap(path, v.env) != "" { @@ -1043,7 +1196,7 @@ func (v *Viper) find(key string) interface{} { } // Config file next - val = v.searchMapWithPathPrefixes(v.config, path) + val = v.searchIndexableWithPathPrefixes(v.config, path) if val != nil { return val } @@ -1069,24 +1222,33 @@ func (v *Viper) find(key string) interface{} { return nil } - // last chance: if no other value is returned and a flag does exist for the value, - // get the flag's value even if the flag's value has not changed - if flag, exists := v.pflags[key]; exists { - switch flag.ValueType() { - case "int", "int8", "int16", "int32", "int64": - return cast.ToInt(flag.ValueString()) - case "bool": - return cast.ToBool(flag.ValueString()) - case "stringSlice": - s := strings.TrimPrefix(flag.ValueString(), "[") - s = strings.TrimSuffix(s, "]") - res, _ := readAsCSV(s) - return res - default: - return flag.ValueString() + if flagDefault { + // last chance: if no value is found and a flag does exist for the key, + // get the flag's default value even if the flag's value has not been set. + if flag, exists := v.pflags[key]; exists { + switch flag.ValueType() { + case "int", "int8", "int16", "int32", "int64": + return cast.ToInt(flag.ValueString()) + case "bool": + return cast.ToBool(flag.ValueString()) + case "stringSlice": + s := strings.TrimPrefix(flag.ValueString(), "[") + s = strings.TrimSuffix(s, "]") + res, _ := readAsCSV(s) + 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: + return flag.ValueString() + } } + // last item, no need to check shadowing } - // last item, no need to check shadowing return nil } @@ -1100,19 +1262,45 @@ func readAsCSV(val string) ([]string, error) { 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 is case-insensitive for a key. This behavior can be modified // with viper.SetKeysCaseSensitive. func IsSet(key string) bool { return v.IsSet(key) } + func (v *Viper) IsSet(key string) bool { casedKey := v.caseKey(key) - val := v.find(casedKey) + val := v.find(casedKey, true) return val != nil } -// AutomaticEnv has Viper check ENV variables for all. -// keys set in config, default & flags +// AutomaticEnv makes Viper check if environment variables match any of the existing keys +// (config, default or flags). If matching env vars are found, they are loaded into Viper. func AutomaticEnv() { v.AutomaticEnv() } + func (v *Viper) AutomaticEnv() { v.automaticEnvApplied = true } @@ -1121,13 +1309,15 @@ func (v *Viper) AutomaticEnv() { // Useful for mapping an environmental variable to a key that does // not match it. func SetEnvKeyReplacer(r *strings.Replacer) { v.SetEnvKeyReplacer(r) } + func (v *Viper) SetEnvKeyReplacer(r *strings.Replacer) { v.envKeyReplacer = r } -// Aliases provide another accessor for the same key. -// This enables one to change a name without breaking the application +// RegisterAlias creates an alias that provides another accessor for the same key. +// This enables one to change a name without breaking the application. func RegisterAlias(alias string, key string) { v.RegisterAlias(alias, key) } + func (v *Viper) RegisterAlias(alias string, key string) { v.registerAlias(alias, v.caseKey(key)) } @@ -1175,6 +1365,7 @@ func (v *Viper) realKey(key string) string { // InConfig checks to see if the given key (or an alias) is in the config file. func InConfig(key string) bool { return v.InConfig(key) } + func (v *Viper) InConfig(key string) bool { // if the requested key is an alias, then return the proper key key = v.realKey(key) @@ -1188,6 +1379,7 @@ func (v *Viper) InConfig(key string) bool { // with viper.SetKeysCaseSensitive. // Default only used when no value is provided by the user via flag, config or ENV. func SetDefault(key string, value interface{}) { v.SetDefault(key, value) } + func (v *Viper) SetDefault(key string, value interface{}) { // If alias passed in, then set the proper default key = v.realKey(v.caseKey(key)) @@ -1209,6 +1401,7 @@ func (v *Viper) SetDefault(key string, value interface{}) { // Will be used instead of values obtained via // flags, config file, ENV, default, or key/value store. func Set(key string, value interface{}) { v.Set(key, value) } + func (v *Viper) Set(key string, value interface{}) { // If alias passed in, then set the proper override key = v.realKey(v.caseKey(key)) @@ -1227,6 +1420,7 @@ func (v *Viper) Set(key string, value interface{}) { // ReadInConfig will discover and load the configuration file from disk // and key/value stores, searching in one of the defined paths. func ReadInConfig() error { return v.ReadInConfig() } + func (v *Viper) ReadInConfig() error { jww.INFO.Println("Attempting to read in config file") filename, err := v.getConfigFile() @@ -1257,6 +1451,7 @@ func (v *Viper) ReadInConfig() error { // MergeInConfig merges a new configuration with an existing config. func MergeInConfig() error { return v.MergeInConfig() } + func (v *Viper) MergeInConfig() error { jww.INFO.Println("Attempting to merge in config file") filename, err := v.getConfigFile() @@ -1279,6 +1474,7 @@ func (v *Viper) MergeInConfig() error { // ReadConfig will read a configuration file, setting existing keys to nil if the // key does not exist in the file. func ReadConfig(in io.Reader) error { return v.ReadConfig(in) } + func (v *Viper) ReadConfig(in io.Reader) error { v.config = make(map[string]interface{}) return v.unmarshalReader(in, v.config) @@ -1286,6 +1482,7 @@ func (v *Viper) ReadConfig(in io.Reader) error { // MergeConfig merges a new configuration with an existing config. func MergeConfig(in io.Reader) error { return v.MergeConfig(in) } + func (v *Viper) MergeConfig(in io.Reader) error { cfg := make(map[string]interface{}) if err := v.unmarshalReader(in, cfg); err != nil { @@ -1297,6 +1494,7 @@ func (v *Viper) MergeConfig(in io.Reader) error { // 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{}) @@ -1310,6 +1508,7 @@ func (v *Viper) MergeConfigMap(cfg map[string]interface{}) error { // WriteConfig writes the current configuration to a file. func WriteConfig() error { return v.WriteConfig() } + func (v *Viper) WriteConfig() error { filename, err := v.getConfigFile() if err != nil { @@ -1320,55 +1519,67 @@ func (v *Viper) WriteConfig() error { // SafeWriteConfig writes current configuration to file only if the file does not exist. func SafeWriteConfig() error { return v.SafeWriteConfig() } + func (v *Viper) SafeWriteConfig() error { - filename, err := v.getConfigFile() - if err != nil { - return err + if len(v.configPaths) < 1 { + return errors.New("missing configuration for 'configPath'") } - 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. func WriteConfigAs(filename string) error { return v.WriteConfigAs(filename) } + func (v *Viper) WriteConfigAs(filename string) error { return v.writeConfig(filename, true) } // SafeWriteConfigAs writes current configuration to a given filename if it does not exist. func SafeWriteConfigAs(filename string) error { return v.SafeWriteConfigAs(filename) } + 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) } -func writeConfig(filename string, force bool) error { return v.writeConfig(filename, force) } func (v *Viper) writeConfig(filename string, force bool) error { jww.INFO.Println("Attempting to write configuration to file.") + var configType string + ext := filepath.Ext(filename) - if len(ext) <= 1 { - return fmt.Errorf("Filename: %s requires valid extension.", filename) + if ext != "" { + 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) { return UnsupportedConfigError(configType) } if v.config == nil { v.config = make(map[string]interface{}) } - var flags int - if force == true { - flags = os.O_CREATE | os.O_TRUNC | os.O_WRONLY - } 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) - } + flags := os.O_CREATE | os.O_TRUNC | os.O_WRONLY + if !force { + flags |= os.O_EXCL } f, err := v.fs.OpenFile(filename, flags, v.configPermissions) if err != nil { 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. @@ -1376,6 +1587,7 @@ func (v *Viper) writeConfig(filename string, force bool) error { func unmarshalReader(in io.Reader, c map[string]interface{}) error { return v.unmarshalReader(in, c) } + func (v *Viper) unmarshalReader(in io.Reader, c map[string]interface{}) error { buf := new(bytes.Buffer) buf.ReadFrom(in) @@ -1392,7 +1604,7 @@ func (v *Viper) unmarshalReader(in io.Reader, c map[string]interface{}) error { } case "hcl": - obj, err := hcl.Parse(string(buf.Bytes())) + obj, err := hcl.Parse(buf.String()) if err != nil { return ConfigParseError{err} } @@ -1410,6 +1622,15 @@ 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 @@ -1425,6 +1646,23 @@ func (v *Viper) unmarshalReader(in io.Reader, c map[string]interface{}) error { // set innermost 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 + } + } } if !v.caseSensitiveKeys { @@ -1434,9 +1672,6 @@ func (v *Viper) unmarshalReader(in io.Reader, c map[string]interface{}) error { } // 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 { c := v.AllSettings() switch configType { @@ -1452,6 +1687,9 @@ func (v *Viper) marshalWriter(f afero.File, configType string) error { case "hcl": b, err := json.Marshal(c) + if err != nil { + return ConfigMarshalError{err} + } ast, err := hcl.Parse(string(b)) if err != nil { return ConfigMarshalError{err} @@ -1477,6 +1715,18 @@ 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 { @@ -1495,6 +1745,22 @@ func (v *Viper) marshalWriter(f afero.File, configType string) error { if _, err = f.WriteString(string(b)); err != nil { 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.GetString(key)) + } + cfg.WriteTo(f) } return nil } @@ -1518,6 +1784,14 @@ func castToMapStringInterface( return tgt } +func castMapStringSliceToMapInterface(src map[string][]string) map[string]interface{} { + tgt := map[string]interface{}{} + for k, v := range src { + tgt[k] = v + } + return tgt +} + func castMapStringToMapInterface(src map[string]string) map[string]interface{} { tgt := map[string]interface{}{} for k, v := range src { @@ -1597,6 +1871,7 @@ func mergeMaps( // ReadRemoteConfig attempts to get configuration from a remote source // and read it in the remote configuration registry. func ReadRemoteConfig() error { return v.ReadRemoteConfig() } + func (v *Viper) ReadRemoteConfig() error { return v.getKeyValueConfig() } @@ -1619,9 +1894,13 @@ func (v *Viper) getKeyValueConfig() error { for _, rp := range v.remoteProviders { val, err := v.getRemoteConfig(rp) if err != nil { + jww.ERROR.Printf("get remote config: %s", err) + continue } + v.kvstore = val + return nil } return RemoteConfigError("No Files Found") @@ -1640,7 +1919,7 @@ func (v *Viper) getRemoteConfig(provider RemoteProvider) (map[string]interface{} func (v *Viper) watchKeyValueConfigOnChannel() error { for _, rp := range v.remoteProviders { respc, _ := RemoteConfig.WatchChannel(rp) - //Todo: Add quit channel + // Todo: Add quit channel go func(rc <-chan *RemoteResponse) { for { b := <-rc @@ -1676,21 +1955,22 @@ func (v *Viper) watchRemoteConfig(provider RemoteProvider) (map[string]interface } // 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 (v *Viper) AllKeys() []string { m := map[string]bool{} // add all paths, by order of descending priority to ensure correct shadowing m = v.flattenAndMergeMap(m, castMapStringToMapInterface(v.aliases), "") m = v.flattenAndMergeMap(m, v.override, "") m = v.mergeFlatMap(m, castMapFlagToMapInterface(v.pflags)) - m = v.mergeFlatMap(m, castMapStringToMapInterface(v.env)) + m = v.mergeFlatMap(m, castMapStringSliceToMapInterface(v.env)) m = v.flattenAndMergeMap(m, v.config, "") m = v.flattenAndMergeMap(m, v.kvstore, "") m = v.flattenAndMergeMap(m, v.defaults, "") // convert set of paths to list - a := []string{} + a := make([]string, 0, len(m)) for x := range m { a = append(a, x) } @@ -1699,7 +1979,7 @@ func (v *Viper) AllKeys() []string { // flattenAndMergeMap recursively flattens the given map into a map[string]bool // 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, // it is skipped. // The resulting set of paths is merged to the given shadow set at the same time. @@ -1739,7 +2019,7 @@ 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 { // scan keys outer: - for k, _ := range m { + for k := range m { path := strings.Split(k, v.keyDelim) // scan intermediate paths var parentKey string @@ -1758,6 +2038,7 @@ outer: // AllSettings merges all settings and returns them as a map[string]interface{}. func AllSettings() map[string]interface{} { return v.AllSettings() } + func (v *Viper) AllSettings() map[string]interface{} { m := map[string]interface{}{} // start from the list of keys, and construct the map one value at a time @@ -1779,6 +2060,7 @@ func (v *Viper) AllSettings() map[string]interface{} { // SetFs sets the filesystem to use to read configuration. func SetFs(fs afero.Fs) { v.SetFs(fs) } + func (v *Viper) SetFs(fs afero.Fs) { v.fs = fs } @@ -1786,6 +2068,7 @@ func (v *Viper) SetFs(fs afero.Fs) { // SetConfigName sets name for the config file. // Does not include extension. func SetConfigName(in string) { v.SetConfigName(in) } + func (v *Viper) SetConfigName(in string) { if in != "" { v.configName = in @@ -1796,6 +2079,7 @@ func (v *Viper) SetConfigName(in string) { // SetConfigType sets the type of the configuration returned by the // remote source, e.g. "json". func SetConfigType(in string) { v.SetConfigType(in) } + func (v *Viper) SetConfigType(in string) { if in != "" { v.configType = in @@ -1804,6 +2088,7 @@ 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() } @@ -1864,6 +2149,12 @@ 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 "" } @@ -1893,6 +2184,7 @@ func (v *Viper) findConfigFile() (string, error) { // Debug prints all configuration registries for debugging // purposes. func Debug() { v.Debug() } + func (v *Viper) Debug() { fmt.Printf("Aliases:\n%#v\n", v.aliases) fmt.Printf("Override:\n%#v\n", v.override) diff --git a/viper_test.go b/viper_test.go index ff984e696..dba1fdd30 100644 --- a/viper_test.go +++ b/viper_test.go @@ -8,12 +8,12 @@ package viper import ( "bytes" "encoding/json" - "fmt" "io" "io/ioutil" "os" "os/exec" "path" + "path/filepath" "reflect" "runtime" "sort" @@ -26,10 +26,11 @@ import ( "github.com/mitchellh/mapstructure" "github.com/spf13/afero" "github.com/spf13/cast" - "github.com/spf13/pflag" "github.com/stretchr/testify/assert" "github.com/stretchr/testify/require" + + "github.com/spf13/viper/internal/testutil" ) var yamlExample = []byte(`Hacker: true @@ -64,6 +65,11 @@ 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", @@ -113,6 +119,24 @@ var remoteExample = []byte(`{ "newkey":"remote" }`) +var iniExample = []byte(`; Package name +NAME = ini +; Package version +VERSION = v1 +; Package import path +IMPORT_PATH = gopkg.in/%(NAME)s.%(VERSION)s + +# Information about package author +# Bio can be written in multiple lines. +[author] +NAME = Unknown ; Succeeding comment +E-MAIL = fake@localhost +GITHUB = https://github.com/%(NAME)s +BIO = """Gopher. +Coding addict. +Good man. +""" # Succeeding comment`) + func initConfigs() { Reset() var r io.Reader @@ -136,9 +160,17 @@ 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) + + SetConfigType("ini") + r = bytes.NewReader(iniExample) + unmarshalReader(r, v.config) } func initConfig(typ, config string) { @@ -179,6 +211,14 @@ func initTOML() { unmarshalReader(r, v.config) } +func initDotEnv() { + Reset() + SetConfigType("env") + r := bytes.NewReader(dotenvExample) + + unmarshalReader(r, v.config) +} + func initHcl() { Reset() SetConfigType("hcl") @@ -187,15 +227,27 @@ func initHcl() { unmarshalReader(r, v.config) } +func initIni() { + Reset() + SetConfigType("ini") + r := bytes.NewReader(iniExample) + + unmarshalReader(r, v.config) +} + // make directories for testing func initDirs(t *testing.T) (string, string, func()) { - var ( - testDirs = []string{`a a`, `b`, `c\c`, `D_`} + testDirs = []string{`a a`, `b`, `C_`} config = `improbable` ) + if runtime.GOOS != "windows" { + testDirs = append(testDirs, `d\d`) + } + root, err := ioutil.TempDir("", "") + require.NoError(t, err, "Failed to create temporary directory") cleanup := true defer func() { @@ -208,7 +260,7 @@ func initDirs(t *testing.T) (string, string, func()) { assert.Nil(t, err) err = os.Chdir(root) - assert.Nil(t, err) + require.Nil(t, err) for _, dir := range testDirs { err = os.Mkdir(dir, 0750) @@ -228,7 +280,7 @@ func initDirs(t *testing.T) (string, string, func()) { } } -//stubs for PFlag Values +// stubs for PFlag Values type stringValue string func newStringValue(val string, p *string) *stringValue { @@ -246,7 +298,7 @@ func (s *stringValue) Type() string { } func (s *stringValue) String() string { - return fmt.Sprintf("%s", *s) + return string(*s) } func TestBasics(t *testing.T) { @@ -256,6 +308,60 @@ func TestBasics(t *testing.T) { assert.NoError(t, err) } +func TestSearchInPath_WithoutConfigTypeSet(t *testing.T) { + filename := ".dotfilenoext" + path := "/tmp" + file := filepath.Join(path, filename) + SetConfigName(filename) + AddConfigPath(path) + _, createErr := v.fs.Create(file) + defer func() { + _ = v.fs.Remove(file) + }() + assert.NoError(t, createErr) + _, err := v.getConfigFile() + // unless config type is set, files without extension + // are not considered + assert.Error(t, err) +} + +func TestSearchInPath(t *testing.T) { + filename := ".dotfilenoext" + path := "/tmp" + file := filepath.Join(path, filename) + SetConfigName(filename) + SetConfigType("yaml") + AddConfigPath(path) + _, createErr := v.fs.Create(file) + defer func() { + _ = v.fs.Remove(file) + }() + assert.NoError(t, createErr) + filename, err := v.getConfigFile() + assert.Equal(t, file, filename) + assert.NoError(t, err) +} + +func TestSearchInPath_FilesOnly(t *testing.T) { + fs := afero.NewMemMapFs() + + err := fs.Mkdir("/tmp/config", 0777) + require.NoError(t, err) + + _, err = fs.Create("/tmp/config/config.yaml") + require.NoError(t, err) + + v := New() + + v.SetFs(fs) + v.AddConfigPath("/tmp") + v.AddConfigPath("/tmp/config") + + filename, err := v.getConfigFile() + assert.Equal(t, "/tmp/config/config.yaml", filename) + assert.NoError(t, err) +} + func TestDefault(t *testing.T) { SetDefault("age", 45) assert.Equal(t, 45, Get("age")) @@ -342,6 +448,11 @@ 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")) @@ -353,6 +464,11 @@ func TestHCL(t *testing.T) { assert.NotEqual(t, "cronut", Get("type")) } +func TestIni(t *testing.T) { + initIni() + assert.Equal(t, "ini", Get("default.name")) +} + func TestRemotePrecedence(t *testing.T) { initJSON() @@ -372,11 +488,12 @@ func TestEnv(t *testing.T) { initJSON() BindEnv("id") - BindEnv("f", "FOOD") + BindEnv("f", "FOOD", "OLD_FOOD") - os.Setenv("ID", "13") - os.Setenv("FOOD", "apple") - os.Setenv("NAME", "crunk") + testutil.Setenv(t, "ID", "13") + testutil.Setenv(t, "FOOD", "apple") + testutil.Setenv(t, "OLD_FOOD", "banana") + testutil.Setenv(t, "NAME", "crunk") assert.Equal(t, "13", Get("id")) assert.Equal(t, "apple", Get("f")) @@ -385,7 +502,16 @@ func TestEnv(t *testing.T) { AutomaticEnv() assert.Equal(t, "crunk", Get("name")) +} +func TestMultipleEnv(t *testing.T) { + initJSON() + + BindEnv("f", "FOOD", "OLD_FOOD") + + testutil.Setenv(t, "OLD_FOOD", "banana") + + assert.Equal(t, "banana", Get("f")) } func TestEmptyEnv(t *testing.T) { @@ -394,9 +520,7 @@ func TestEmptyEnv(t *testing.T) { BindEnv("type") // Empty environment variable BindEnv("name") // Bound, but not set environment variable - os.Clearenv() - - os.Setenv("TYPE", "") + testutil.Setenv(t, "TYPE", "") assert.Equal(t, "donut", Get("type")) assert.Equal(t, "Cake", Get("name")) @@ -410,9 +534,7 @@ func TestEmptyEnv_Allowed(t *testing.T) { BindEnv("type") // Empty environment variable BindEnv("name") // Bound, but not set environment variable - os.Clearenv() - - os.Setenv("TYPE", "") + testutil.Setenv(t, "TYPE", "") assert.Equal(t, "", Get("type")) assert.Equal(t, "Cake", Get("name")) @@ -425,9 +547,9 @@ func TestEnvPrefix(t *testing.T) { BindEnv("id") BindEnv("f", "FOOD") // not using prefix - os.Setenv("FOO_ID", "13") - os.Setenv("FOOD", "apple") - os.Setenv("FOO_NAME", "crunk") + testutil.Setenv(t, "FOO_ID", "13") + testutil.Setenv(t, "FOOD", "apple") + testutil.Setenv(t, "FOO_NAME", "crunk") assert.Equal(t, "13", Get("id")) assert.Equal(t, "apple", Get("f")) @@ -442,7 +564,9 @@ func TestAutoEnv(t *testing.T) { Reset() AutomaticEnv() - os.Setenv("FOO_BAR", "13") + + testutil.Setenv(t, "FOO_BAR", "13") + assert.Equal(t, "13", Get("foo_bar")) } @@ -451,7 +575,9 @@ func TestAutoEnvWithPrefix(t *testing.T) { AutomaticEnv() SetEnvPrefix("Baz") - os.Setenv("BAZ_BAR", "13") + + testutil.Setenv(t, "BAZ_BAR", "13") + assert.Equal(t, "13", Get("bar")) } @@ -459,7 +585,8 @@ func TestSetEnvKeyReplacer(t *testing.T) { Reset() AutomaticEnv() - os.Setenv("REFRESH_INTERVAL", "30s") + + testutil.Setenv(t, "REFRESH_INTERVAL", "30s") replacer := strings.NewReplacer("-", "_") SetEnvKeyReplacer(replacer) @@ -467,15 +594,124 @@ func TestSetEnvKeyReplacer(t *testing.T) { assert.Equal(t, "30s", Get("refresh-interval")) } +func TestEnvKeyReplacer(t *testing.T) { + v := NewWithOptions(EnvKeyReplacer(strings.NewReplacer("-", "_"))) + + v.AutomaticEnv() + + testutil.Setenv(t, "REFRESH_INTERVAL", "30s") + + assert.Equal(t, "30s", v.Get("refresh-interval")) +} + 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", + "author.bio", + "author.e-mail", + "author.github", + "author.name", + "newkey", + "owner.organization", + "owner.dob", + "owner.bio", + "name", + "beard", + "ppu", + "batters.batter", + "hobbies", + "clothing.jacket", + "clothing.trousers", + "default.import_path", + "default.name", + "default.version", + "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", + "author": map[string]interface{}{ + "e-mail": "fake@localhost", + "github": "https://github.com/Unknown", + "name": "Unknown", + "bio": "Gopher.\nCoding addict.\nGood man.\n", + }, + "ppu": 0.55, + "eyes": "brown", + "clothing": map[string]interface{}{ + "trousers": "denim", + "jacket": "leather", + "pants": map[string]interface{}{"size": "large"}, + }, + "default": map[string]interface{}{ + "import_path": "gopkg.in/ini.v1", + "name": "ini", + "version": "v1", + }, + "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{}{ + { + "foo": []map[string]interface{}{ + {"key": 1}, + {"key": 2}, + {"key": 3}, + {"key": 4}, + }, + }, + }, + "title_dotenv": "DotEnv Example", + "type_dotenv": "donut", + "name_dotenv": "Cake", + } - var allkeys sort.StringSlice - allkeys = AllKeys() + allkeys := sort.StringSlice(AllKeys()) allkeys.Sort() ks.Sort() @@ -490,8 +726,9 @@ func TestAllKeysWithEnv(t *testing.T) { v.BindEnv("id") v.BindEnv("foo.bar") v.SetEnvKeyReplacer(strings.NewReplacer(".", "_")) - os.Setenv("ID", "13") - os.Setenv("FOO_BAR", "baz") + + testutil.Setenv(t, "ID", "13") + testutil.Setenv(t, "FOO_BAR", "baz") expectedKeys := sort.StringSlice{"id", "foo.bar"} expectedKeys.Sort() @@ -516,11 +753,13 @@ func TestUnmarshal(t *testing.T) { SetDefault("port", 1313) Set("name", "Steve") Set("duration", "1s1ms") + Set("modes", []int{1, 2, 3}) type config struct { Port int Name string Duration time.Duration + Modes []int } var C config @@ -530,14 +769,33 @@ func TestUnmarshal(t *testing.T) { t.Fatalf("unable to decode into struct, %v", err) } - assert.Equal(t, &config{Name: "Steve", Port: 1313, Duration: time.Second + time.Millisecond}, &C) + assert.Equal( + t, + &config{ + Name: "Steve", + Port: 1313, + Duration: time.Second + time.Millisecond, + Modes: []int{1, 2, 3}, + }, + &C, + ) Set("port", 1234) err = Unmarshal(&C) if err != nil { t.Fatalf("unable to decode into struct, %v", err) } - assert.Equal(t, &config{Name: "Steve", Port: 1234, Duration: time.Second + time.Millisecond}, &C) + + assert.Equal( + t, + &config{ + Name: "Steve", + Port: 1234, + Duration: time.Second + time.Millisecond, + Modes: []int{1, 2, 3}, + }, + &C, + ) } func TestUnmarshalWithDecoderOptions(t *testing.T) { @@ -580,13 +838,13 @@ func TestBindPFlags(t *testing.T) { v := New() // create independent Viper object flagSet := pflag.NewFlagSet("test", pflag.ContinueOnError) - var testValues = map[string]*string{ + testValues := map[string]*string{ "host": nil, "port": nil, "endpoint": nil, } - var mutatedTestValues = map[string]string{ + mutatedTestValues := map[string]string{ "host": "localhost", "port": "6060", "endpoint": "/public", @@ -609,15 +867,15 @@ func TestBindPFlags(t *testing.T) { for name, expected := range mutatedTestValues { assert.Equal(t, expected, v.Get(name)) } - } +// nolint: dupl func TestBindPFlagsStringSlice(t *testing.T) { tests := []struct { Expected []string Value string }{ - {nil, ""}, + {[]string{}, ""}, {[]string{"jeden"}, "jeden"}, {[]string{"dwa", "trzy"}, "dwa,trzy"}, {[]string{"cztery", "piec , szesc"}, "cztery,\"piec , szesc\""}, @@ -651,6 +909,7 @@ func TestBindPFlagsStringSlice(t *testing.T) { } if changed { assert.Equal(t, testValue.Expected, val.StringSlice) + assert.Equal(t, testValue.Expected, v.Get("stringslice")) } else { assert.Equal(t, defaultVal, val.StringSlice) } @@ -658,9 +917,56 @@ func TestBindPFlagsStringSlice(t *testing.T) { } } +// nolint: dupl +func TestBindPFlagsIntSlice(t *testing.T) { + tests := []struct { + Expected []int + Value string + }{ + {[]int{}, ""}, + {[]int{1}, "1"}, + {[]int{2, 3}, "2,3"}, + } + + v := New() // create independent Viper object + defaultVal := []int{0} + v.SetDefault("intslice", defaultVal) + + for _, testValue := range tests { + flagSet := pflag.NewFlagSet("test", pflag.ContinueOnError) + flagSet.IntSlice("intslice", testValue.Expected, "test") + + for _, changed := range []bool{true, false} { + flagSet.VisitAll(func(f *pflag.Flag) { + f.Value.Set(testValue.Value) + f.Changed = changed + }) + + err := v.BindPFlags(flagSet) + if err != nil { + t.Fatalf("error binding flag set, %v", err) + } + + type TestInt struct { + IntSlice []int + } + val := &TestInt{} + if err := v.Unmarshal(val); err != nil { + t.Fatalf("%+#v cannot unmarshal: %s", testValue.Value, err) + } + if changed { + assert.Equal(t, testValue.Expected, val.IntSlice) + assert.Equal(t, testValue.Expected, v.Get("intslice")) + } else { + assert.Equal(t, defaultVal, val.IntSlice) + } + } + } +} + func TestBindPFlag(t *testing.T) { - var testString = "testing" - var testValue = newStringValue(testString, &testString) + testString := "testing" + testValue := newStringValue(testString, &testString) flag := &pflag.Flag{ Name: "testflag", @@ -673,22 +979,74 @@ func TestBindPFlag(t *testing.T) { assert.Equal(t, testString, Get("testvalue")) flag.Value.Set("testing_mutate") - flag.Changed = true //hack for pflag usage + flag.Changed = true // hack for pflag usage assert.Equal(t, "testing_mutate", Get("testvalue")) +} + +func TestBindPFlagDetectNilFlag(t *testing.T) { + result := BindPFlag("testvalue", nil) + assert.Error(t, result) +} + +func TestBindPFlagStringToString(t *testing.T) { + tests := []struct { + Expected map[string]string + Value string + }{ + {map[string]string{}, ""}, + {map[string]string{"yo": "hi"}, "yo=hi"}, + {map[string]string{"yo": "hi", "oh": "hi=there"}, "yo=hi,oh=hi=there"}, + {map[string]string{"yo": ""}, "yo="}, + {map[string]string{"yo": "", "oh": "hi=there"}, "yo=,oh=hi=there"}, + } + + v := New() // create independent Viper object + defaultVal := map[string]string{} + v.SetDefault("stringtostring", defaultVal) + + for _, testValue := range tests { + flagSet := pflag.NewFlagSet("test", pflag.ContinueOnError) + flagSet.StringToString("stringtostring", testValue.Expected, "test") + + for _, changed := range []bool{true, false} { + flagSet.VisitAll(func(f *pflag.Flag) { + f.Value.Set(testValue.Value) + f.Changed = changed + }) + err := v.BindPFlags(flagSet) + if err != nil { + t.Fatalf("error binding flag set, %v", err) + } + + type TestMap struct { + StringToString map[string]string + } + val := &TestMap{} + if err := v.Unmarshal(val); err != nil { + t.Fatalf("%+#v cannot unmarshal: %s", testValue.Value, err) + } + if changed { + assert.Equal(t, testValue.Expected, val.StringToString) + } else { + assert.Equal(t, defaultVal, val.StringToString) + } + } + } } func TestBoundCaseSensitivity(t *testing.T) { assert.Equal(t, "brown", Get("eyes")) BindEnv("eYEs", "TURTLE_EYES") - os.Setenv("TURTLE_EYES", "blue") + + testutil.Setenv(t, "TURTLE_EYES", "blue") assert.Equal(t, "blue", Get("eyes")) - var testString = "green" - var testValue = newStringValue(testString, &testString) + testString := "green" + testValue := newStringValue(testString, &testString) flag := &pflag.Flag{ Name: "eyeballs", @@ -698,7 +1056,6 @@ func TestBoundCaseSensitivity(t *testing.T) { BindPFlag("eYEs", flag) assert.Equal(t, "green", Get("eyes")) - } func TestSizeInBytes(t *testing.T) { @@ -756,8 +1113,11 @@ 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{}{ @@ -765,9 +1125,11 @@ func TestFindsNestedKeys(t *testing.T) { }, map[string]interface{}{ "type": "Chocolate", - }, map[string]interface{}{ + }, + map[string]interface{}{ "type": "Blueberry", - }, map[string]interface{}{ + }, + map[string]interface{}{ "type": "Devil's Food", }, }, @@ -798,18 +1160,18 @@ func TestFindsNestedKeys(t *testing.T) { "owner.dob": dob, "beard": true, "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, }, }, @@ -818,10 +1180,8 @@ func TestFindsNestedKeys(t *testing.T) { } for key, expectedValue := range expected { - assert.Equal(t, expectedValue, v.Get(key)) } - } func TestReadBufConfig(t *testing.T) { @@ -841,16 +1201,51 @@ func TestReadBufConfig(t *testing.T) { func TestIsSet(t *testing.T) { v := New() v.SetConfigType("yaml") + + /* config and defaults */ v.ReadConfig(bytes.NewBuffer(yamlExample)) + v.SetDefault("clothing.shoes", "sneakers") + + assert.True(t, v.IsSet("clothing")) assert.True(t, v.IsSet("clothing.jacket")) assert.False(t, v.IsSet("clothing.jackets")) + assert.True(t, v.IsSet("clothing.shoes")) + + /* state change */ assert.False(t, v.IsSet("helloworld")) v.Set("helloworld", "fubar") assert.True(t, v.IsSet("helloworld")) + + /* env */ + v.SetEnvKeyReplacer(strings.NewReplacer(".", "_")) + v.BindEnv("eyes") + v.BindEnv("foo") + v.BindEnv("clothing.hat") + v.BindEnv("clothing.hats") + + testutil.Setenv(t, "FOO", "bar") + testutil.Setenv(t, "CLOTHING_HAT", "bowler") + + assert.True(t, v.IsSet("eyes")) // in the config file + assert.True(t, v.IsSet("foo")) // in the environment + assert.True(t, v.IsSet("clothing.hat")) // in the environment + assert.False(t, v.IsSet("clothing.hats")) // not defined + + /* flags */ + flagset := pflag.NewFlagSet("testisset", pflag.ContinueOnError) + flagset.Bool("foobaz", false, "foobaz") + flagset.Bool("barbaz", false, "barbaz") + foobaz, barbaz := flagset.Lookup("foobaz"), flagset.Lookup("barbaz") + v.BindPFlag("foobaz", foobaz) + v.BindPFlag("barbaz", barbaz) + barbaz.Value.Set("true") + barbaz.Changed = true // hack for pflag usage + + assert.False(t, v.IsSet("foobaz")) + assert.True(t, v.IsSet("barbaz")) } func TestDirsSearch(t *testing.T) { - root, config, cleanup := initDirs(t) defer cleanup() @@ -859,6 +1254,7 @@ func TestDirsSearch(t *testing.T) { v.SetDefault(`key`, `default`) entries, err := ioutil.ReadDir(root) + assert.Nil(t, err) for _, e := range entries { if e.IsDir() { v.AddConfigPath(e.Name()) @@ -868,11 +1264,10 @@ func TestDirsSearch(t *testing.T) { err = v.ReadInConfig() assert.Nil(t, err) - assert.Equal(t, `value is `+path.Base(v.configPaths[0]), v.GetString(`key`)) + assert.Equal(t, `value is `+filepath.Base(v.configPaths[0]), v.GetString(`key`)) } func TestWrongDirsSearchNotFound(t *testing.T) { - _, config, cleanup := initDirs(t) defer cleanup() @@ -892,7 +1287,6 @@ func TestWrongDirsSearchNotFound(t *testing.T) { } func TestWrongDirsSearchNotFoundForMerge(t *testing.T) { - _, config, cleanup := initDirs(t) defer cleanup() @@ -955,26 +1349,6 @@ var hclWriteExpected = []byte(`"foos" = { "type" = "donut"`) -func TestWriteConfigHCL(t *testing.T) { - v := New() - fs := afero.NewMemMapFs() - v.SetFs(fs) - v.SetConfigName("c") - v.SetConfigType("hcl") - err := v.ReadConfig(bytes.NewBuffer(hclExample)) - if err != nil { - t.Fatal(err) - } - if err := v.WriteConfigAs("c.hcl"); err != nil { - t.Fatal(err) - } - read, err := afero.ReadFile(fs, "c.hcl") - if err != nil { - t.Fatal(err) - } - assert.Equal(t, hclWriteExpected, read) -} - var jsonWriteExpected = []byte(`{ "batters": { "batter": [ @@ -998,26 +1372,6 @@ var jsonWriteExpected = []byte(`{ "type": "donut" }`) -func TestWriteConfigJson(t *testing.T) { - v := New() - fs := afero.NewMemMapFs() - v.SetFs(fs) - v.SetConfigName("c") - v.SetConfigType("json") - err := v.ReadConfig(bytes.NewBuffer(jsonExample)) - if err != nil { - t.Fatal(err) - } - if err := v.WriteConfigAs("c.json"); err != nil { - t.Fatal(err) - } - read, err := afero.ReadFile(fs, "c.json") - if err != nil { - t.Fatal(err) - } - assert.Equal(t, jsonWriteExpected, read) -} - var propertiesWriteExpected = []byte(`p_id = 0001 p_type = donut p_name = Cake @@ -1025,58 +1379,6 @@ p_ppu = 0.55 p_batters.batter.type = Regular `) -func TestWriteConfigProperties(t *testing.T) { - v := New() - fs := afero.NewMemMapFs() - v.SetFs(fs) - v.SetConfigName("c") - v.SetConfigType("properties") - err := v.ReadConfig(bytes.NewBuffer(propertiesExample)) - if err != nil { - t.Fatal(err) - } - if err := v.WriteConfigAs("c.properties"); err != nil { - t.Fatal(err) - } - read, err := afero.ReadFile(fs, "c.properties") - if err != nil { - t.Fatal(err) - } - assert.Equal(t, propertiesWriteExpected, read) -} - -func TestWriteConfigTOML(t *testing.T) { - fs := afero.NewMemMapFs() - v := New() - v.SetFs(fs) - v.SetConfigName("c") - v.SetConfigType("toml") - err := v.ReadConfig(bytes.NewBuffer(tomlExample)) - if err != nil { - t.Fatal(err) - } - if err := v.WriteConfigAs("c.toml"); 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("toml") - v2.SetConfigFile("c.toml") - err = v2.ReadInConfig() - if err != nil { - t.Fatal(err) - } - - assert.Equal(t, v.GetString("title"), v2.GetString("title")) - assert.Equal(t, v.GetString("owner.bio"), v2.GetString("owner.bio")) - assert.Equal(t, v.GetString("owner.dob"), v2.GetString("owner.dob")) - assert.Equal(t, v.GetString("owner.organization"), v2.GetString("owner.organization")) -} - var yamlWriteExpected = []byte(`age: 35 beard: true clothing: @@ -1093,24 +1395,299 @@ hobbies: name: steve `) -func TestWriteConfigYAML(t *testing.T) { +func TestWriteConfig(t *testing.T) { + fs := afero.NewMemMapFs() + testCases := map[string]struct { + configName string + inConfigType string + outConfigType string + fileName string + input []byte + expectedContent []byte + }{ + "hcl with file extension": { + configName: "c", + inConfigType: "hcl", + outConfigType: "hcl", + fileName: "c.hcl", + input: hclExample, + expectedContent: hclWriteExpected, + }, + "hcl without file extension": { + configName: "c", + inConfigType: "hcl", + outConfigType: "hcl", + fileName: "c", + input: hclExample, + expectedContent: hclWriteExpected, + }, + "hcl with file extension and mismatch type": { + configName: "c", + inConfigType: "hcl", + outConfigType: "json", + fileName: "c.hcl", + input: hclExample, + expectedContent: hclWriteExpected, + }, + "json with file extension": { + configName: "c", + inConfigType: "json", + outConfigType: "json", + fileName: "c.json", + input: jsonExample, + expectedContent: jsonWriteExpected, + }, + "json without file extension": { + configName: "c", + inConfigType: "json", + outConfigType: "json", + fileName: "c", + input: jsonExample, + expectedContent: jsonWriteExpected, + }, + "json with file extension and mismatch type": { + configName: "c", + inConfigType: "json", + outConfigType: "hcl", + fileName: "c.json", + input: jsonExample, + expectedContent: jsonWriteExpected, + }, + "properties with file extension": { + configName: "c", + inConfigType: "properties", + outConfigType: "properties", + fileName: "c.properties", + input: propertiesExample, + expectedContent: propertiesWriteExpected, + }, + "properties without file extension": { + configName: "c", + inConfigType: "properties", + outConfigType: "properties", + fileName: "c", + input: propertiesExample, + expectedContent: propertiesWriteExpected, + }, + "yaml with file extension": { + configName: "c", + inConfigType: "yaml", + outConfigType: "yaml", + fileName: "c.yaml", + input: yamlExample, + expectedContent: yamlWriteExpected, + }, + "yaml without file extension": { + configName: "c", + inConfigType: "yaml", + outConfigType: "yaml", + fileName: "c", + input: yamlExample, + expectedContent: yamlWriteExpected, + }, + "yaml with file extension and mismatch type": { + configName: "c", + inConfigType: "yaml", + outConfigType: "json", + fileName: "c.yaml", + input: yamlExample, + expectedContent: yamlWriteExpected, + }, + } + for name, tc := range testCases { + t.Run(name, func(t *testing.T) { + v := New() + v.SetFs(fs) + v.SetConfigName(tc.fileName) + v.SetConfigType(tc.inConfigType) + + err := v.ReadConfig(bytes.NewBuffer(tc.input)) + if err != nil { + t.Fatal(err) + } + v.SetConfigType(tc.outConfigType) + if err := v.WriteConfigAs(tc.fileName); err != nil { + t.Fatal(err) + } + read, err := afero.ReadFile(fs, tc.fileName) + if err != nil { + t.Fatal(err) + } + assert.Equal(t, tc.expectedContent, read) + }) + } +} + +func TestWriteConfigTOML(t *testing.T) { + fs := afero.NewMemMapFs() + + testCases := map[string]struct { + configName string + configType string + fileName string + input []byte + }{ + "with file extension": { + configName: "c", + configType: "toml", + fileName: "c.toml", + input: tomlExample, + }, + "without file extension": { + configName: "c", + configType: "toml", + fileName: "c", + input: tomlExample, + }, + } + for name, tc := range testCases { + t.Run(name, func(t *testing.T) { + v := New() + v.SetFs(fs) + v.SetConfigName(tc.configName) + v.SetConfigType(tc.configType) + err := v.ReadConfig(bytes.NewBuffer(tc.input)) + if err != nil { + t.Fatal(err) + } + if err := v.WriteConfigAs(tc.fileName); 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(tc.configName) + v2.SetConfigType(tc.configType) + v2.SetConfigFile(tc.fileName) + err = v2.ReadInConfig() + if err != nil { + t.Fatal(err) + } + + assert.Equal(t, v.GetString("title"), v2.GetString("title")) + assert.Equal(t, v.GetString("owner.bio"), v2.GetString("owner.bio")) + assert.Equal(t, v.GetString("owner.dob"), v2.GetString("owner.dob")) + assert.Equal(t, v.GetString("owner.organization"), v2.GetString("owner.organization")) + }) + } +} + +func TestWriteConfigDotEnv(t *testing.T) { + fs := afero.NewMemMapFs() + testCases := map[string]struct { + configName string + configType string + fileName string + input []byte + }{ + "with file extension": { + configName: "c", + configType: "env", + fileName: "c.env", + input: dotenvExample, + }, + "without file extension": { + configName: "c", + configType: "env", + fileName: "c", + input: dotenvExample, + }, + } + for name, tc := range testCases { + t.Run(name, func(t *testing.T) { + v := New() + v.SetFs(fs) + v.SetConfigName(tc.configName) + v.SetConfigType(tc.configType) + err := v.ReadConfig(bytes.NewBuffer(tc.input)) + if err != nil { + t.Fatal(err) + } + if err := v.WriteConfigAs(tc.fileName); 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(tc.configName) + v2.SetConfigType(tc.configType) + v2.SetConfigFile(tc.fileName) + err = v2.ReadInConfig() + if err != nil { + t.Fatal(err) + } + + assert.Equal(t, v.GetString("title_dotenv"), v2.GetString("title_dotenv")) + assert.Equal(t, v.GetString("type_dotenv"), v2.GetString("type_dotenv")) + assert.Equal(t, v.GetString("kind_dotenv"), v2.GetString("kind_dotenv")) + }) + } +} + +func TestSafeWriteConfig(t *testing.T) { + v := New() + fs := afero.NewMemMapFs() + v.SetFs(fs) + v.AddConfigPath("/test") + v.SetConfigName("c") + v.SetConfigType("yaml") + require.NoError(t, v.ReadConfig(bytes.NewBuffer(yamlExample))) + require.NoError(t, v.SafeWriteConfig()) + read, err := afero.ReadFile(fs, "/test/c.yaml") + require.NoError(t, err) + assert.Equal(t, yamlWriteExpected, read) +} + +func TestSafeWriteConfigWithMissingConfigPath(t *testing.T) { + v := New() + fs := afero.NewMemMapFs() + v.SetFs(fs) + v.SetConfigName("c") + v.SetConfigType("yaml") + require.EqualError(t, v.SafeWriteConfig(), "missing configuration for 'configPath'") +} + +func TestSafeWriteConfigWithExistingFile(t *testing.T) { v := New() fs := afero.NewMemMapFs() + fs.Create("/test/c.yaml") v.SetFs(fs) + v.AddConfigPath("/test") v.SetConfigName("c") v.SetConfigType("yaml") + err := v.SafeWriteConfig() + require.Error(t, err) + _, ok := err.(ConfigFileAlreadyExistsError) + assert.True(t, ok, "Expected ConfigFileAlreadyExistsError") +} + +func TestSafeWriteAsConfig(t *testing.T) { + v := New() + fs := afero.NewMemMapFs() + v.SetFs(fs) err := v.ReadConfig(bytes.NewBuffer(yamlExample)) if err != nil { t.Fatal(err) } - if err := v.WriteConfigAs("c.yaml"); err != nil { - t.Fatal(err) - } - read, err := afero.ReadFile(fs, "c.yaml") - if err != nil { + require.NoError(t, v.SafeWriteConfigAs("/test/c.yaml")) + if _, err = afero.ReadFile(fs, "/test/c.yaml"); err != nil { t.Fatal(err) } - assert.Equal(t, yamlWriteExpected, read) +} + +func TestSafeWriteConfigAsWithExistingFile(t *testing.T) { + v := New() + fs := afero.NewMemMapFs() + fs.Create("/test/c.yaml") + v.SetFs(fs) + err := v.SafeWriteConfigAs("/test/c.yaml") + require.Error(t, err) + _, ok := err.(ConfigFileAlreadyExistsError) + assert.True(t, ok, "Expected ConfigFileAlreadyExistsError") } var yamlMergeExampleTgt = []byte(` @@ -1132,6 +1709,9 @@ hello: universe: - mw - ad + ints: + - 1 + - 2 fu: bar `) @@ -1198,6 +1778,10 @@ func TestMergeConfig(t *testing.T) { t.Fatalf("len(universe) != 2, = %d", len(universe)) } + if ints := v.GetIntSlice("hello.ints"); len(ints) != 2 { + t.Fatalf("len(ints) != 2, = %d", len(ints)) + } + if fu := v.GetString("fu"); fu != "bar" { t.Fatalf("fu != \"bar\", = %s", fu) } @@ -1238,6 +1822,10 @@ func TestMergeConfigNoMerge(t *testing.T) { t.Fatalf("len(universe) != 2, = %d", len(universe)) } + if ints := v.GetIntSlice("hello.ints"); len(ints) != 2 { + t.Fatalf("len(ints) != 2, = %d", len(ints)) + } + if fu := v.GetString("fu"); fu != "bar" { t.Fatalf("fu != \"bar\", = %s", fu) } @@ -1282,7 +1870,6 @@ func TestMergeConfigMap(t *testing.T) { } assert(1234) - } func TestUnmarshalingWithAliases(t *testing.T) { @@ -1321,7 +1908,6 @@ func TestSetConfigNameClearsFileCache(t *testing.T) { } func TestShadowedNestedValue(t *testing.T) { - config := `name: steve clothing: jacket: leather @@ -1454,7 +2040,8 @@ func TestCaseInsensitiveSet(t *testing.T) { "Bar": map[interface{}]interface { }{ "ABc": "A", - "cDE": "B"}, + "cDE": "B", + }, } m2 := map[string]interface{}{ @@ -1462,7 +2049,8 @@ func TestCaseInsensitiveSet(t *testing.T) { "Bar": map[interface{}]interface { }{ "bCd": "A", - "eFG": "B"}, + "eFG": "B", + }, } Set("Given1", m1) @@ -1572,7 +2160,6 @@ func doTestCaseSensitive(t *testing.T, typ, config string) { assert.Equal(t, 4, cast.ToInt(Get("eF.Lm.nO"))) assert.Equal(t, 0, cast.ToInt(Get("ef.lm.p.q"))) assert.Equal(t, 5, cast.ToInt(Get("eF.Lm.P.Q"))) - } func newViperWithConfigFile(t *testing.T) (*Viper, string, func()) { @@ -1677,7 +2264,133 @@ func TestWatchFile(t *testing.T) { require.Nil(t, err) assert.Equal(t, "baz", v.Get("foo")) }) +} + +func TestUnmarshal_DotSeparatorBackwardCompatibility(t *testing.T) { + flags := pflag.NewFlagSet("test", pflag.ContinueOnError) + flags.String("foo.bar", "cobra_flag", "") + + v := New() + assert.NoError(t, v.BindPFlags(flags)) + + config := &struct { + Foo struct { + Bar string + } + }{} + + assert.NoError(t, v.Unmarshal(config)) + assert.Equal(t, "cobra_flag", config.Foo.Bar) +} + +var yamlExampleWithDot = []byte(`Hacker: true +name: steve +hobbies: + - skateboarding + - snowboarding + - go +clothing: + jacket: leather + trousers: denim + pants: + size: large +age: 35 +eyes : brown +beard: true +emails: + steve@hacker.com: + created: 01/02/03 + active: true +`) + +func TestKeyDelimiter(t *testing.T) { + v := NewWithOptions(KeyDelimiter("::")) + v.SetConfigType("yaml") + r := strings.NewReader(string(yamlExampleWithDot)) + + err := v.unmarshalReader(r, v.config) + require.NoError(t, err) + + values := map[string]interface{}{ + "image": map[string]interface{}{ + "repository": "someImage", + "tag": "1.0.0", + }, + "ingress": map[string]interface{}{ + "annotations": map[string]interface{}{ + "traefik.frontend.rule.type": "PathPrefix", + "traefik.ingress.kubernetes.io/ssl-redirect": "true", + }, + }, + } + + v.SetDefault("charts::values", values) + + assert.Equal(t, "leather", v.GetString("clothing::jacket")) + assert.Equal(t, "01/02/03", v.GetString("emails::steve@hacker.com::created")) + + type config struct { + Charts struct { + Values map[string]interface{} + } + } + + expected := config{ + Charts: struct { + Values map[string]interface{} + }{ + Values: values, + }, + } + + var actual config + + assert.NoError(t, v.Unmarshal(&actual)) + + assert.Equal(t, expected, actual) +} + +var yamlDeepNestedSlices = []byte(`TV: +- title: "The expanse" + seasons: + - first_released: "December 14, 2015" + episodes: + - title: "Dulcinea" + air_date: "December 14, 2015" + - title: "The Big Empty" + air_date: "December 15, 2015" + - title: "Remember the Cant" + air_date: "December 22, 2015" + - first_released: "February 1, 2017" + episodes: + - title: "Safe" + air_date: "February 1, 2017" + - title: "Doors & Corners" + air_date: "February 1, 2017" + - title: "Static" + air_date: "February 8, 2017" + episodes: + - ["Dulcinea", "The Big Empty", "Remember the Cant"] + - ["Safe", "Doors & Corners", "Static"] +`) + +func TestSliceIndexAccess(t *testing.T) { + v.SetConfigType("yaml") + r := strings.NewReader(string(yamlDeepNestedSlices)) + + err := v.unmarshalReader(r, v.config) + require.NoError(t, err) + + assert.Equal(t, "The expanse", v.GetString("tv.0.title")) + assert.Equal(t, "February 1, 2017", v.GetString("tv.0.seasons.1.first_released")) + assert.Equal(t, "Static", v.GetString("tv.0.seasons.1.episodes.2.title")) + assert.Equal(t, "December 15, 2015", v.GetString("tv.0.seasons.0.episodes.1.air_date")) + + // Test for index out of bounds + assert.Equal(t, "", v.GetString("tv.0.seasons.2.first_released")) + // Accessing multidimensional arrays + assert.Equal(t, "Static", v.GetString("tv.0.episodes.1.2")) } func BenchmarkGetBool(b *testing.B) { @@ -1704,7 +2417,7 @@ func BenchmarkGet(b *testing.B) { } } -// This is the "perfect result" for the above. +// BenchmarkGetBoolFromMap is the "perfect result" for the above. func BenchmarkGetBoolFromMap(b *testing.B) { m := make(map[string]bool) key := "BenchmarkGetBool"