Add iris.TOML to load configuration from toml-syntax based documents.

Former-commit-id: f92dc5bcaa92ca13aaf892dc27829ae33907b387

HISTORY.md

@@ -24,7 +24,13 @@ to adapt the new changes to your application, it contains an overview of the new
 - Template engines (two lines to add, same features as before, except their easier configuration)
 - Basic middleware, that have been written by me, are transfared to the main repository[/middleware](https://github.com/kataras/iris/tree/v6/middleware) with a lot of improvements to the `recover middleware` (see the next)
 - `func(http.ResponseWriter, r *http.Request, next http.HandlerFunc)` signature is fully compatible using `iris.ToHandler` helper wrapper func, without any need of custom boilerplate code. So all net/http middleware out there are supported, no need to re-invert the world here, search to the internet and you'll find a suitable to your case.
-- Developers can use a `yaml` files for the configuration using the `iris.YAML` function: `app := iris.New(iris.YAML("myconfiguration.yaml"))`
+
+- Load Configuration from an external file, yaml and toml:
+
+	- [yaml-based](http://www.yaml.org/) configuration file using the `iris.YAML` function: `app := iris.New(iris.YAML("myconfiguration.yaml"))`
+	- [toml-based](https://github.com/toml-lang/toml) configuration file using the `iris.TOML` function: `app := iris.New(iris.TOML("myconfiguration.toml"))`
+
+
 - Add `.Regex` middleware which does path validation using the `regexp` package, i.e `.Regex("param", "[0-9]+$")`. Useful for routers that don't support regex route path validation out-of-the-box.
 
 - Websocket additions: `c.Context() *iris.Context`, `ws.GetConnectionsByRoom("room name") []websocket.Connection`, `c.OnLeave(func(roomName string){})`, `c.Values().Set(key,value)/.Get(key).Reset()` (where ws:websocket.Server insance, where c:websocket.Connection instance)
@@ -45,8 +51,8 @@ Fixes:
 Changes:
 
 - `context.TemplateString` replaced with `app.Render(w io.Writer, name string, bind interface{}, options ...map[string]interface{}) error)` which gives you more functionality.
+
 ```go
-```
 import "bytes"
 // ....
 app := iris.New()

README.md

@@ -24,8 +24,58 @@ Iris is an efficient and well-designed toolbox with robust set of features.<br/>
 <b>perfect high-performance web applications</b> <br/>with unlimited potentials and <b>portability</b>.
 <br/>
 
+If you're coming from <a href="https://nodejs.org/en/">Node.js</a> world, this is the <a href="https://github.com/expressjs/express">expressjs</a>  alternative for the <a href="https://golang.org">Go Programming Language.</a>
+<br/>
+
+<br/>
+<img src="https://raw.githubusercontent.com/smallnest/go-web-framework-benchmark/4db507a22c964c9bc9774c5b31afdc199a0fe8b7/benchmark.png" alt="Benchmark Wizzard July 21, 2016- Processing Time Horizontal Graph. These third-party source benchmark results are for v5. New (go 1.8) benchmarks will be published on the next techempower's fortune!" />
+
+
 </p>
 
+Feature Overview
+-----------
+
+- Focus on high performance
+- Automatically install and serve certificates from https://letsencrypt.org
+- Robust routing and middleware ecosystem
+- Build RESTful APIs
+- Choose your favorite routes' path syntax between [httprouter](https://github.com/kataras/iris/blob/v6/adaptors/httprouter/_example/main.go) and [gorillamux](https://github.com/kataras/iris/blob/v6/adaptors/gorillamux/_example/main.go)
+- Request-Scoped Transactions
+- Group API's and subdomains with wildcard support
+- Body binding for JSON, XML, Forms, can be extended to use your own custom binders
+- More than 50 handy functions to send HTTP responses
+- View system: supporting more than 6+ template engines, with prerenders. You can still use your favorite
+- Define virtual hosts and (wildcard) subdomains with path level routing
+- Graceful shutdown
+- Limit request body
+- Localization i18N
+- Serve static files
+- Cache
+- Log requests
+- Customizable format and output for the logger
+- Customizable HTTP errors
+- Compression (Gzip)
+- Authentication
+ - OAuth, OAuth2 supporting 27+ popular websites
+ - JWT
+ - Basic Authentication
+ - HTTP Sessions
+- Add / Remove trailing slash from the URL with option to redirect
+- Redirect requests
+ - HTTP to HTTPS
+ - HTTP to HTTPS WWW
+ - HTTP to HTTPS non WWW
+ - Non WWW to WWW
+ - WWW to non WWW
+- Highly scalable rich content render (Markdown, JSON, JSONP, XML...)
+- Websocket-only API similar to socket.io  
+- Hot Reload on source code changes
+- Typescript integration + Web IDE
+- Checks for updates at startup
+- Highly customizable
+- Feels like you used iris forever, thanks to its Fluent API
+- And many others...
 
 Installation
 -----------

configuration.go

@@ -6,7 +6,9 @@ import (
 	"strconv"
 	"time"
 
+	"github.com/BurntSushi/toml"
 	"github.com/imdario/mergo"
+	"github.com/kataras/go-errors"
 	"gopkg.in/yaml.v2"
 )
 
@@ -39,15 +41,18 @@ func (o OptionSet) Set(c *Configuration) {
 	o(c)
 }
 
-// YAML reads Configuration from a file.yml.
+var errConfigurationDecode = errors.New("while trying to decode configuration")
+
+// YAML reads Configuration from a configuration.yml file.
 //
-// Accepts the absolute path of the file.yml.
+// Accepts the absolute path of the configuration.yml.
 // An error will be shown to the user via panic with the error message.
-// Error may occur when the file.yml doesn't exists or is not formatted correctly.
+// Error may occur when the configuration.yml doesn't exists or is not formatted correctly.
 //
 // Usage:
-// 1. `app := iris.New(YAML("myfile.yml"))`
+// 1. `app := iris.New(iris.YAML("myconfig.yml"))`
-// 2. `app.Set(YAML("myfile.yml"))`
+// or
+// 2. `app.Set(iris.YAML("myconfig.yml"))`
 func YAML(filename string) Configuration {
 	c := DefaultConfiguration()
 
@@ -55,23 +60,64 @@ func YAML(filename string) Configuration {
 	// which will try to find the 'filename' from current workind dir too.
 	yamlAbsPath, err := filepath.Abs(filename)
 	if err != nil {
-		panic("FATAL ERROR .yml.filename to absolute: " + err.Error())
+		panic(errConfigurationDecode.AppendErr(err))
 	}
 
 	// read the raw contents of the file
 	data, err := ioutil.ReadFile(yamlAbsPath)
 	if err != nil {
-		panic("FATAL ERROR .yml.ReadFile: " + err.Error())
+		panic(errConfigurationDecode.AppendErr(err))
 	}
 
 	// put the file's contents as yaml to the default configuration(c)
 	if err := yaml.Unmarshal(data, &c); err != nil {
-		panic("FATAL ERROR .yml.Unmarshal: " + err.Error())
+		panic(errConfigurationDecode.AppendErr(err))
 	}
 
 	return c
 }
 
+// TOML reads Configuration from a toml-compatible document file.
+// Read more about toml's implementation at:
+// https://github.com/toml-lang/toml
+//
+//
+// Accepts the absolute path of the configuration file.
+// An error will be shown to the user via panic with the error message.
+// Error may occur when the file doesn't exists or is not formatted correctly.
+//
+// Usage:
+// 1. `app := iris.New(iris.TOML("myconfig.toml"))`
+// or
+// 2. `app.Set(iris.TOML("myconfig.toml"))`
+func TOML(filename string) Configuration {
+	c := DefaultConfiguration()
+
+	// get the abs
+	// which will try to find the 'filename' from current workind dir too.
+	tomlAbsPath, err := filepath.Abs(filename)
+	if err != nil {
+		panic(errConfigurationDecode.AppendErr(err))
+	}
+
+	// read the raw contents of the file
+	data, err := ioutil.ReadFile(tomlAbsPath)
+	if err != nil {
+		panic(errConfigurationDecode.AppendErr(err))
+	}
+
+	// put the file's contents as toml to the default configuration(c)
+	if _, err := toml.Decode(string(data), &c); err != nil {
+		panic(errConfigurationDecode.AppendErr(err))
+	}
+	// Author's notes:
+	// The toml's 'usual thing' for key naming is: the_config_key instead of TheConfigKey
+	// but I am always prefer to use the specific programming language's syntax
+	// and the original configuration name fields for external configuration files
+	// so we do 'toml: "TheConfigKeySameAsTheConfigField" instead.
+	return c
+}
+
 // Configuration the whole configuration for an Iris station instance
 // these can be passed via options also, look at the top of this file(configuration.go).
 // Configuration is a valid OptionSetter.
@@ -101,20 +147,20 @@ type Configuration struct {
 	//   addr only(http://) but the nginx mapper is listening to https://
 	//
 	// Default comes from iris.Default.Listen/.Serve with iris' listeners (TCP4,UNIX,TLS,LETSENCRYPT).
-	VScheme string `yaml:"VScheme"`
+	VScheme string `yaml:"VScheme" toml:"VScheme"`
 
 	// ReadTimeout is the maximum duration before timing out read of the request.
-	ReadTimeout time.Duration `yaml:"ReadTimeout"`
+	ReadTimeout time.Duration `yaml:"ReadTimeout" toml:"ReadTimeout"`
 
 	// WriteTimeout is the maximum duration before timing out write of the response.
-	WriteTimeout time.Duration `yaml:"WriteTimeout"`
+	WriteTimeout time.Duration `yaml:"WriteTimeout" toml:"WriteTimeout"`
 
 	// MaxHeaderBytes controls the maximum number of bytes the
 	// server will read parsing the request header's keys and
 	// values, including the request line. It does not limit the
 	// size of the request body.
 	// If zero, DefaultMaxHeaderBytes is used.
-	MaxHeaderBytes int `yaml:"MaxHeaderBytes"`
+	MaxHeaderBytes int `yaml:"MaxHeaderBytes" toml:"MaxHeaderBytes"`
 
 	// CheckForUpdates will try to search for newer version of Iris based on the https://github.com/kataras/iris/releases
 	// If a newer version found then the app will ask the he dev/user if want to update the 'x' version
@@ -130,7 +176,7 @@ type Configuration struct {
 	// Usage: app := iris.New(iris.Configuration{CheckForUpdates: true})
 	//
 	// Defaults to false.
-	CheckForUpdates bool `yaml:"CheckForUpdates"`
+	CheckForUpdates bool `yaml:"CheckForUpdates" toml:"CheckForUpdates"`
 
 	// DisablePathCorrection corrects and redirects the requested path to the registered path
 	// for example, if /home/ path is requested but no handler for this Route found,
@@ -138,7 +184,7 @@ type Configuration struct {
 	// (permant)redirects the client to the correct path /home
 	//
 	// Defaults to false.
-	DisablePathCorrection bool `yaml:"disablePathCorrection"`
+	DisablePathCorrection bool `yaml:"DisablePathCorrection" toml:"DisablePathCorrection"`
 
 	// EnablePathEscape when is true then its escapes the path, the named parameters (if any).
 	// Change to false it if you want something like this https://github.com/kataras/iris/issues/135 to work
@@ -151,12 +197,12 @@ type Configuration struct {
 	// projectName, _ := url.QueryUnescape(c.Param("project").
 	//
 	// Defaults to false.
-	EnablePathEscape bool `yaml:"EnablePathEscape"`
+	EnablePathEscape bool `yaml:"EnablePathEscape" toml:"EnablePathEscape"`
 
 	// FireMethodNotAllowed if it's true router checks for StatusMethodNotAllowed(405) and
 	//  fires the 405 error instead of 404
 	// Defaults to false.
-	FireMethodNotAllowed bool `yaml:"FireMethodNotAllowed"`
+	FireMethodNotAllowed bool `yaml:"FireMethodNotAllowed" toml:"FireMethodNotAllowed"`
 
 	// DisableBodyConsumptionOnUnmarshal manages the reading behavior of the context's body readers/binders.
 	// If setted to true then it
@@ -166,23 +212,23 @@ type Configuration struct {
 	// if this field setted to true then a new buffer will be created to read from and the request body.
 	// The body will not be changed and existing data before the
 	// context.UnmarshalBody/ReadJSON/ReadXML will be not consumed.
-	DisableBodyConsumptionOnUnmarshal bool `yaml:"DisableBodyConsumptionOnUnmarshal"`
+	DisableBodyConsumptionOnUnmarshal bool `yaml:"DisableBodyConsumptionOnUnmarshal" toml:"DisableBodyConsumptionOnUnmarshal"`
 
 	// TimeFormat time format for any kind of datetime parsing
 	// Defaults to  "Mon, 02 Jan 2006 15:04:05 GMT".
-	TimeFormat string `yaml:"TimeFormat"`
+	TimeFormat string `yaml:"TimeFormat" toml:"TimeFormat"`
 
 	// Charset character encoding for various rendering
 	// used for templates and the rest of the responses
 	// Defaults to "UTF-8".
-	Charset string `yaml:"Charset"`
+	Charset string `yaml:"Charset" toml:"Charset"`
 
 	// Gzip enables gzip compression on your Render actions, this includes any type of render,
 	// templates and pure/raw content
 	// If you don't want to enable it globally, you could just use the third parameter
 	// on context.Render("myfileOrResponse", structBinding{}, iris.RenderOptions{"gzip": true})
 	// Defaults to false.
-	Gzip bool `yaml:"Gzip"`
+	Gzip bool `yaml:"Gzip" toml:"Gzip"`
 
 	// Other are the custom, dynamic options, can be empty.
 	// This field used only by you to set any app's options you want
@@ -197,7 +243,7 @@ type Configuration struct {
 	// app.Adapt(routerAdaptor.New())
 	// app.Config.Other[iris.RouterNameConfigKey]
 	//
-	Other map[string]interface{} `yaml:"Other"`
+	Other map[string]interface{} `yaml:"Other" toml:"Other"`
 }
 
 // RouterNameConfigKey is the optional key that is being registered by router adaptor.

configuration_test.go

@@ -133,7 +133,7 @@ func TestConfigurationYAML(t *testing.T) {
 	}
 
 	if expected := 0; c.ReadTimeout != time.Duration(expected) {
-		t.Fatalf("error on TestConfigurationYAML: Expected ReadTimeout %s but got %s", expected, c.ReadTimeout)
+		t.Fatalf("error on TestConfigurationYAML: Expected ReadTimeout %d but got %s", expected, c.ReadTimeout)
 	}
 
 	if expected := time.Duration(5 * time.Second); c.WriteTimeout != expected {
@@ -141,7 +141,7 @@ func TestConfigurationYAML(t *testing.T) {
 	}
 
 	if expected := 8096; c.MaxHeaderBytes != expected {
-		t.Fatalf("error on TestConfigurationYAML: Expected MaxHeaderBytes %s but got %s", expected, c.MaxHeaderBytes)
+		t.Fatalf("error on TestConfigurationYAML: Expected MaxHeaderBytes %d but got %d", expected, c.MaxHeaderBytes)
 	}
 
 	if expected := true; c.CheckForUpdates != expected {
@@ -177,3 +177,105 @@ func TestConfigurationYAML(t *testing.T) {
 	}
 
 }
+
+func TestConfigurationTOML(t *testing.T) {
+	// create the key and cert files on the fly, and delete them when this test finished
+	tomlFile, ferr := ioutil.TempFile("", "configuration.toml")
+
+	if ferr != nil {
+		t.Fatal(ferr)
+	}
+
+	defer func() {
+		tomlFile.Close()
+		time.Sleep(50 * time.Millisecond)
+		os.Remove(tomlFile.Name())
+	}()
+
+	tomlConfigurationContents := `
+VHost = "iris-go.com"
+VScheme = "https://"
+ReadTimeout = 0
+# Go's toml doesn't supports implicit time.Duration
+# There is a solution: I have to write a custom duration which implements the encoding.TextUnmarshaler 
+# but to use a custom type for time.Duration is not wise.
+# So instead of 5s , we just use the 5 000 000 000 nanoseconds on WriteTimeOut.
+WriteTimeout = 5000000000 
+MaxHeaderBytes = 8096
+CheckForUpdates = true
+DisablePathCorrection = false
+EnablePathEscape = false
+FireMethodNotAllowed = true
+DisableBodyConsumptionOnUnmarshal = true
+TimeFormat = "Mon, 01 Jan 2006 15:04:05 GMT"
+Charset = "UTF-8"
+Gzip = true
+
+[Other]
+	# Indentation (tabs and/or spaces) is allowed but not required
+	MyServerName = "Iris.v6"
+
+  `
+	tomlFile.WriteString(tomlConfigurationContents)
+	filename := tomlFile.Name()
+	app := New(TOML(filename))
+
+	c := app.Config
+
+	if expected := "iris-go.com"; c.VHost != expected {
+		t.Fatalf("error on TestConfigurationTOML: Expected VHost %s but got %s", expected, c.VHost)
+	}
+
+	if expected := "https://"; c.VScheme != expected {
+		t.Fatalf("error on TestConfigurationTOML: Expected VScheme %s but got %s", expected, c.VScheme)
+	}
+
+	if expected := 0; c.ReadTimeout != time.Duration(expected) {
+		t.Fatalf("error on TestConfigurationTOML: Expected ReadTimeout %d but got %s", expected, c.ReadTimeout)
+	}
+
+	if expected := time.Duration(5 * time.Second); c.WriteTimeout != expected {
+		t.Fatalf("error on TestConfigurationTOML: Expected WriteTimeout %s but got %s", expected, c.WriteTimeout)
+	}
+
+	if expected := 8096; c.MaxHeaderBytes != expected {
+		t.Fatalf("error on TestConfigurationTOML: Expected MaxHeaderBytes %d but got %d", expected, c.MaxHeaderBytes)
+	}
+
+	if expected := true; c.CheckForUpdates != expected {
+		t.Fatalf("error on TestConfigurationTOML: Expected checkForUpdates %v but got %v", expected, c.CheckForUpdates)
+	}
+
+	if expected := false; c.DisablePathCorrection != expected {
+		t.Fatalf("error on TestConfigurationTOML: Expected DisablePathCorrection %v but got %v", expected, c.DisablePathCorrection)
+	}
+
+	if expected := false; c.EnablePathEscape != expected {
+		t.Fatalf("error on TestConfigurationTOML: Expected EnablePathEscape %v but got %v", expected, c.EnablePathEscape)
+	}
+
+	if expected := true; c.FireMethodNotAllowed != expected {
+		t.Fatalf("error on TestConfigurationTOML: Expected FireMethodNotAllowed %v but got %v", expected, c.FireMethodNotAllowed)
+	}
+
+	if expected := true; c.DisableBodyConsumptionOnUnmarshal != expected {
+		t.Fatalf("error on TestConfigurationTOML: Expected DisableBodyConsumptionOnUnmarshal %v but got %v", expected, c.DisableBodyConsumptionOnUnmarshal)
+	}
+
+	if expected := "Mon, 01 Jan 2006 15:04:05 GMT"; c.TimeFormat != expected {
+		t.Fatalf("error on TestConfigurationTOML: Expected TimeFormat %s but got %s", expected, c.TimeFormat)
+	}
+
+	if expected := "UTF-8"; c.Charset != expected {
+		t.Fatalf("error on TestConfigurationTOML: Expected Charset %s but got %s", expected, c.Charset)
+	}
+
+	if expected := true; c.Gzip != expected {
+		t.Fatalf("error on TestConfigurationTOML: Expected != %v but got %v", expected, c.Gzip)
+	}
+
+	if expected := "Iris.v6"; c.Other["MyServerName"] != expected {
+		t.Fatalf("error on TestConfigurationTOML: Expected(Other) != %v but got %v", expected, c.Gzip)
+	}
+
+}