feat: support dump profile to logger and fix typos (#91)

doc/zh.md

@@ -193,7 +193,7 @@ h.Stop()
 
 ```go
         type ReporterImpl struct{}
-        func (r *ReporterImple) Report(pType string, buf []byte, reason string, eventID string) error{
+        func (r *ReporterImpl) Report(pType string, buf []byte, reason string, eventID string) error{
             // do something	
         }
         ......

holmes.go

@@ -589,6 +589,15 @@ func (h *Holmes) cpuProfile(curCPUUsage int, c typeOption) bool {
 	time.Sleep(defaultCPUSamplingTime)
 	pprof.StopCPUProfile()
 
+	if h.opts.DumpToLogger {
+		bfCpy, err := ioutil.ReadFile(binFileName)
+		if err != nil {
+			h.Errorf("encounter error when dumping profile to logger, failed to read cpu profile file: %v", err)
+			return true
+		}
+		h.Infof("[Holmes] CPU profile:: \n" + string(bfCpy))
+	}
+
 	if opts := h.opts.GetReporterOpts(); opts.active == 1 {
 		bfCpy, err := ioutil.ReadFile(binFileName)
 		if err != nil {
@@ -722,6 +731,11 @@ func (h *Holmes) writeProfileDataToFile(data bytes.Buffer, dumpType configureTyp
 		h.Errorf("failed to write profile to file(%v), err: %s", fileName, err.Error())
 		return
 	}
+
+	if h.opts.DumpOptions.DumpToLogger {
+		h.Infof(fmt.Sprintf("[Holmes] %v profile: \n", check2name[dumpType]) + data.String())
+	}
+
 	h.Infof("[Holmes] pprof %v profile write to file %v successfully", check2name[dumpType], fileName)
 }
 

options.go

@@ -18,10 +18,11 @@
 package holmes
 
 import (
-	mlog "mosn.io/pkg/log"
 	"sync"
 	"sync/atomic"
 	"time"
+
+	mlog "mosn.io/pkg/log"
 )
 
 type options struct {
@@ -94,6 +95,8 @@ type DumpOptions struct {
 	DumpProfileType dumpProfileType
 	// only dump top 10 if set to false, otherwise dump all, only effective when in_text = true
 	DumpFullStack bool
+	// dump profile to logger. It will make huge log output if enable DumpToLogger option. issues/90
+	DumpToLogger bool
 }
 
 // ShrinkThrOptions contains the configuration about shrink thread
@@ -287,6 +290,13 @@ func WithGoroutineDump(min int, diff int, abs int, max int, coolDown time.Durati
 	})
 }
 
+func WithDumpToLogger(new bool) Option {
+	return optionFunc(func(opts *options) (err error) {
+		opts.DumpToLogger = new
+		return
+	})
+}
+
 type typeOption struct {
 	Enable bool
 	// mem/cpu/gcheap trigger minimum in percent, goroutine/thread trigger minimum in number

readme.md

@@ -168,7 +168,7 @@ You can use `Reporter` to implement the following features:
 
 ```go
         type ReporterImpl struct{}
-        func (r *ReporterImple) Report(pType string, buf []byte, reason string, eventID string) error{
+        func (r *ReporterImpl) Report(pType string, buf []byte, reason string, eventID string) error{
             // do something	
         }
         ......

reporters/reporter_test.go

@@ -123,6 +123,7 @@ func TestReporterReopen(t *testing.T) {
 		holmes.WithGoroutineDump(5, 10, 20, 90, time.Second),
 		holmes.WithCPUDump(0, 2, 80, time.Second),
 		holmes.WithCollectInterval("5s"),
+		holmes.WithDumpToLogger(true),
 	)
 	if err != nil {
 		log.Fatalf("fail to set opts on running time.")