151 lines
3.4 KiB
Go
151 lines
3.4 KiB
Go
// Copyright 2014 Manu Martinez-Almeida. All rights reserved.
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// Use of this source code is governed by a MIT style
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// license that can be found in the LICENSE file.
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package gin
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import (
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"fmt"
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"io"
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"os"
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"time"
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"github.com/mattn/go-isatty"
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)
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var (
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green = string([]byte{27, 91, 57, 55, 59, 52, 50, 109})
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white = string([]byte{27, 91, 57, 48, 59, 52, 55, 109})
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yellow = string([]byte{27, 91, 57, 55, 59, 52, 51, 109})
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red = string([]byte{27, 91, 57, 55, 59, 52, 49, 109})
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blue = string([]byte{27, 91, 57, 55, 59, 52, 52, 109})
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magenta = string([]byte{27, 91, 57, 55, 59, 52, 53, 109})
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cyan = string([]byte{27, 91, 57, 55, 59, 52, 54, 109})
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reset = string([]byte{27, 91, 48, 109})
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disableColor = false
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)
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// DisableConsoleColor disables color output in the console
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func DisableConsoleColor() {
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disableColor = true
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}
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// ErrorLogger returns a handlerfunc for any error type
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func ErrorLogger() HandlerFunc {
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return ErrorLoggerT(ErrorTypeAny)
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}
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// ErrorLoggerT returns a handlerfunc for a given error type
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func ErrorLoggerT(typ ErrorType) HandlerFunc {
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return func(c *Context) {
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c.Next()
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errors := c.Errors.ByType(typ)
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if len(errors) > 0 {
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c.JSON(-1, errors)
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}
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}
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}
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// Logger instances a Logger middleware that will write the logs to gin.DefaultWriter
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// By default gin.DefaultWriter = os.Stdout
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func Logger() HandlerFunc {
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return LoggerWithWriter(DefaultWriter)
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}
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// LoggerWithWriter instance a Logger middleware with the specified writter buffer.
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// Example: os.Stdout, a file opened in write mode, a socket...
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func LoggerWithWriter(out io.Writer, notlogged ...string) HandlerFunc {
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isTerm := true
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if w, ok := out.(*os.File); !ok ||
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(os.Getenv("TERM") == "dumb" || (!isatty.IsTerminal(w.Fd()) && !isatty.IsCygwinTerminal(w.Fd()))) ||
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disableColor {
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isTerm = false
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}
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var skip map[string]struct{}
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if length := len(notlogged); length > 0 {
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skip = make(map[string]struct{}, length)
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for _, path := range notlogged {
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skip[path] = struct{}{}
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}
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}
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return func(c *Context) {
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// Start timer
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start := time.Now()
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path := c.Request.URL.Path
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raw := c.Request.URL.RawQuery
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// Process request
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c.Next()
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// Log only when path is not being skipped
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if _, ok := skip[path]; !ok {
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// Stop timer
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end := time.Now()
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latency := end.Sub(start)
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clientIP := c.ClientIP()
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method := c.Request.Method
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statusCode := c.Writer.Status()
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var statusColor, methodColor string
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if isTerm {
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statusColor = colorForStatus(statusCode)
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methodColor = colorForMethod(method)
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}
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comment := c.Errors.ByType(ErrorTypePrivate).String()
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if raw != "" {
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path = path + "?" + raw
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}
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fmt.Fprintf(out, "[GIN] %v |%s %3d %s| %13v | %15s |%s %s %-7s %s\n%s",
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end.Format("2006/01/02 - 15:04:05"),
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statusColor, statusCode, reset,
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latency,
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clientIP,
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methodColor, method, reset,
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path,
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comment,
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)
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}
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}
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}
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func colorForStatus(code int) string {
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switch {
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case code >= 200 && code < 300:
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return green
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case code >= 300 && code < 400:
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return white
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case code >= 400 && code < 500:
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return yellow
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default:
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return red
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}
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}
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func colorForMethod(method string) string {
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switch method {
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case "GET":
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return blue
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case "POST":
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return cyan
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case "PUT":
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return yellow
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case "DELETE":
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return red
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case "PATCH":
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return green
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case "HEAD":
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return magenta
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case "OPTIONS":
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return white
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default:
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return reset
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}
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}
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