pprof.go

package echopprof

import (
	"net/http/pprof"
	"strings"

	"github.com/labstack/echo/v4"
)

// Wrap adds several routes from package `net/http/pprof` to *echo.Echo object.
func Wrap(e *echo.Echo) {
	WrapGroup("", e.Group(""))
}

// Wrapper make sure we are backward compatible.
var Wrapper = Wrap

// WrapGroup adds several routes from package `net/http/pprof` to *echo.Group object.
func WrapGroup(prefix string, g *echo.Group) {
	routers := []struct {
		Method  string
		Path    string
		Handler echo.HandlerFunc
	}{
		{"GET", "/debug/pprof/", IndexHandler()},
		{"GET", "/debug/pprof/heap", HeapHandler()},
		{"GET", "/debug/pprof/goroutine", GoroutineHandler()},
		{"GET", "/debug/pprof/block", BlockHandler()},
		{"GET", "/debug/pprof/threadcreate", ThreadCreateHandler()},
		{"GET", "/debug/pprof/cmdline", CmdlineHandler()},
		{"GET", "/debug/pprof/profile", ProfileHandler()},
		{"GET", "/debug/pprof/symbol", SymbolHandler()},
		{"POST", "/debug/pprof/symbol", SymbolHandler()},
		{"GET", "/debug/pprof/trace", TraceHandler()},
		{"GET", "/debug/pprof/mutex", MutexHandler()},
	}

	for _, r := range routers {
		switch r.Method {
		case "GET":
			g.GET(strings.TrimPrefix(r.Path, prefix), r.Handler)
		case "POST":
			g.POST(strings.TrimPrefix(r.Path, prefix), r.Handler)
		}
	}
}

// IndexHandler will pass the call from /debug/pprof to pprof.
func IndexHandler() echo.HandlerFunc {
	return func(ctx echo.Context) error {
		pprof.Index(ctx.Response().Writer, ctx.Request())
		return nil
	}
}

// HeapHandler will pass the call from /debug/pprof/heap to pprof.
func HeapHandler() echo.HandlerFunc {
	return func(ctx echo.Context) error {
		pprof.Handler("heap").ServeHTTP(ctx.Response(), ctx.Request())
		return nil
	}
}

// GoroutineHandler will pass the call from /debug/pprof/goroutine to pprof.
func GoroutineHandler() echo.HandlerFunc {
	return func(ctx echo.Context) error {
		pprof.Handler("goroutine").ServeHTTP(ctx.Response().Writer, ctx.Request())
		return nil
	}
}

// BlockHandler will pass the call from /debug/pprof/block to pprof.
func BlockHandler() echo.HandlerFunc {
	return func(ctx echo.Context) error {
		pprof.Handler("block").ServeHTTP(ctx.Response().Writer, ctx.Request())
		return nil
	}
}

// ThreadCreateHandler will pass the call from /debug/pprof/threadcreate to pprof.
func ThreadCreateHandler() echo.HandlerFunc {
	return func(ctx echo.Context) error {
		pprof.Handler("threadcreate").ServeHTTP(ctx.Response().Writer, ctx.Request())
		return nil
	}
}

// CmdlineHandler will pass the call from /debug/pprof/cmdline to pprof.
func CmdlineHandler() echo.HandlerFunc {
	return func(ctx echo.Context) error {
		pprof.Cmdline(ctx.Response().Writer, ctx.Request())
		return nil
	}
}

// ProfileHandler will pass the call from /debug/pprof/profile to pprof.
func ProfileHandler() echo.HandlerFunc {
	return func(ctx echo.Context) error {
		pprof.Profile(ctx.Response().Writer, ctx.Request())
		return nil
	}
}

// SymbolHandler will pass the call from /debug/pprof/symbol to pprof.
func SymbolHandler() echo.HandlerFunc {
	return func(ctx echo.Context) error {
		pprof.Symbol(ctx.Response().Writer, ctx.Request())
		return nil
	}
}

// TraceHandler will pass the call from /debug/pprof/trace to pprof.
func TraceHandler() echo.HandlerFunc {
	return func(ctx echo.Context) error {
		pprof.Trace(ctx.Response().Writer, ctx.Request())
		return nil
	}
}

// MutexHandler will pass the call from /debug/pprof/mutex to pprof.
func MutexHandler() echo.HandlerFunc {
	return func(ctx echo.Context) error {
		pprof.Handler("mutex").ServeHTTP(ctx.Response().Writer, ctx.Request())
		return nil
	}
}