Defaults for middleware config

Signed-off-by: Vishal Rana <vr@labstack.com>

middleware/auth.go

@@ -7,7 +7,7 @@ import (
 )
 
 type (
-	// BasicAuthConfig defines config for HTTP basic auth middleware.
+	// BasicAuthConfig defines the config for HTTP basic auth middleware.
 	BasicAuthConfig struct {
 		// AuthFunc is the function to validate basic auth credentials.
 		AuthFunc BasicAuthFunc

middleware/compress.go

@@ -13,9 +13,10 @@ import (
 )
 
 type (
-	// GzipConfig defines config for gzip middleware.
+	// GzipConfig defines the config for gzip middleware.
 	GzipConfig struct {
 		// Level is the gzip level.
+		// Optional with default value as `DefaultGzipConfig.Level`.
 		Level int
 	}
 
@@ -41,6 +42,11 @@ func Gzip() echo.MiddlewareFunc {
 // GzipFromConfig return gzip middleware from config.
 // See `Gzip()`.
 func GzipFromConfig(config GzipConfig) echo.MiddlewareFunc {
+	// Defaults
+	if config.Level == 0 {
+		config.Level = DefaultGzipConfig.Level
+	}
+
 	pool := gzipPool(config)
 	scheme := "gzip"
 

middleware/logger.go

@@ -10,13 +10,12 @@ import (
 
 	"github.com/labstack/echo"
 	"github.com/labstack/gommon/color"
-	"github.com/mattn/go-isatty"
+	isatty "github.com/mattn/go-isatty"
 	"github.com/valyala/fasttemplate"
 )
 
 type (
-	// LoggerConfig defines config for logger middleware.
-	//
+	// LoggerConfig defines the config for logger middleware.
 	LoggerConfig struct {
 		// Format is the log format which can be constructed using the following tags:
 		//
@@ -30,9 +29,12 @@ type (
 		// - response_size
 		//
 		// Example "${remote_id} ${status}"
+		//
+		// Optional with default value as `DefaultLoggerConfig.Format`.
 		Format string
 
 		// Output is the writer where logs are written.
+		// Optional with default value as `DefaultLoggerConfig.Output`.
 		Output io.Writer
 
 		template *fasttemplate.Template
@@ -58,6 +60,14 @@ func Logger() echo.MiddlewareFunc {
 // LoggerFromConfig returns a logger middleware from config.
 // See `Logger()`.
 func LoggerFromConfig(config LoggerConfig) echo.MiddlewareFunc {
+	// Defaults
+	if config.Format == "" {
+		config.Format = DefaultLoggerConfig.Format
+	}
+	if config.Output == nil {
+		config.Output = DefaultLoggerConfig.Output
+	}
+
 	config.template = fasttemplate.New(config.Format, "${", "}")
 	config.color = color.New()
 	if w, ok := config.Output.(*os.File); ok && !isatty.IsTerminal(w.Fd()) {

middleware/recover.go

@@ -9,16 +9,19 @@ import (
 )
 
 type (
-	// RecoverConfig defines config for recover middleware.
+	// RecoverConfig defines the config for recover middleware.
 	RecoverConfig struct {
 		// StackSize is the stack size to be printed.
+		// Optional with default value as `DefaultRecoverConfig.StackSize`.
 		StackSize int
 
 		// StackAll is a flag to format stack traces of all other goroutines into
 		// buffer after the trace for the current goroutine, or not.
+		// Required.
 		StackAll bool
 
 		// PrintStack is a flag to print stack or not.
+		// Required.
 		PrintStack bool
 	}
 )
@@ -41,6 +44,11 @@ func Recover() echo.MiddlewareFunc {
 // RecoverFromConfig returns a recover middleware from config.
 // See `Recover()`.
 func RecoverFromConfig(config RecoverConfig) echo.MiddlewareFunc {
+	// Defaults
+	if config.StackSize == 0 {
+		config.StackSize = DefaultRecoverConfig.StackSize
+	}
+
 	return func(next echo.Handler) echo.Handler {
 		return echo.HandlerFunc(func(c echo.Context) error {
 			defer func() {

middleware/static.go

@@ -9,17 +9,19 @@ import (
 )
 
 type (
-	// StaticConfig defines config for static middleware.
+	// StaticConfig defines the config for static middleware.
 	StaticConfig struct {
 		// Root is the directory from where the static content is served.
+		// Optional with default value as `DefaultStaticConfig.Root`.
 		Root string `json:"root"`
 
 		// Index is the list of index files to be searched and used when serving
 		// a directory.
-		// Default value is `[]string{"index.html"}`.
+		// Optional with default value as `DefaultStaticConfig.Index`.
 		Index []string `json:"index"`
 
 		// Browse is a flag to enable/disable directory browsing.
+		// Required.
 		Browse bool `json:"browse"`
 	}
 )
@@ -44,6 +46,11 @@ func Static(root string) echo.MiddlewareFunc {
 // StaticFromConfig returns a static middleware from config.
 // See `Static()`.
 func StaticFromConfig(config StaticConfig) echo.MiddlewareFunc {
+	// Defaults
+	if config.Index == nil {
+		config.Index = DefaultStaticConfig.Index
+	}
+
 	return func(next echo.Handler) echo.Handler {
 		return echo.HandlerFunc(func(c echo.Context) error {
 			fs := http.Dir(config.Root)