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simplify recordAPIStats wrapper for ResponseWriters (#9034)

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Harshavardhana 2020-02-24 23:15:32 +05:30 committed by GitHub
parent 4c92bec619
commit ece0d4ac53
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3 changed files with 12 additions and 27 deletions
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5
cmd/generic-handlers.go
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@ -538,9 +538,8 @@ func setHTTPStatsHandler(h http.Handler) http.Handler {
func (h httpStatsHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) { func (h httpStatsHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
isS3Request := !strings.HasPrefix(r.URL.Path, minioReservedBucketPath) isS3Request := !strings.HasPrefix(r.URL.Path, minioReservedBucketPath)
// record s3 connection stats. // record s3 connection stats.
recordRequest := &recordTrafficRequest{ReadCloser: r.Body, isS3Request: isS3Request} r.Body = &recordTrafficRequest{ReadCloser: r.Body, isS3Request: isS3Request}
r.Body = recordRequest recordResponse := &recordTrafficResponse{ResponseWriter: w, isS3Request: isS3Request}
recordResponse := &recordTrafficResponse{w, isS3Request}
// Execute the request // Execute the request
h.handler.ServeHTTP(recordResponse, r) h.handler.ServeHTTP(recordResponse, r)
} }

4
cmd/handler-utils.go
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@ -362,14 +362,16 @@ func collectAPIStats(api string, f http.HandlerFunc) http.HandlerFunc {
return func(w http.ResponseWriter, r *http.Request) { return func(w http.ResponseWriter, r *http.Request) {
isS3Request := !strings.HasPrefix(r.URL.Path, minioReservedBucketPath) isS3Request := !strings.HasPrefix(r.URL.Path, minioReservedBucketPath)
apiStatsWriter := &recordAPIStats{w, UTCNow(), false, 0, isS3Request}
// Time start before the call is about to start. // Time start before the call is about to start.
tBefore := UTCNow() tBefore := UTCNow()
apiStatsWriter := &recordAPIStats{ResponseWriter: w, TTFB: tBefore, isS3Request: isS3Request}
if isS3Request { if isS3Request {
globalHTTPStats.currentS3Requests.Inc(api) globalHTTPStats.currentS3Requests.Inc(api)
} }
// Execute the request // Execute the request
f.ServeHTTP(apiStatsWriter, r) f.ServeHTTP(apiStatsWriter, r)

30
cmd/http-traffic-recorder.go
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@ -41,23 +41,13 @@ func (r *recordTrafficRequest) Read(p []byte) (n int, err error) {
// Records the outgoing bytes through the responseWriter. // Records the outgoing bytes through the responseWriter.
type recordTrafficResponse struct { type recordTrafficResponse struct {
// wrapper for underlying http.ResponseWriter. // wrapper for underlying http.ResponseWriter.
writer http.ResponseWriter http.ResponseWriter
isS3Request bool isS3Request bool
} }
// Calls the underlying WriteHeader.
func (r *recordTrafficResponse) WriteHeader(i int) {
r.writer.WriteHeader(i)
}
// Calls the underlying Header.
func (r *recordTrafficResponse) Header() http.Header {
return r.writer.Header()
}
// Records the output bytes // Records the output bytes
func (r *recordTrafficResponse) Write(p []byte) (n int, err error) { func (r *recordTrafficResponse) Write(p []byte) (n int, err error) {
n, err = r.writer.Write(p) n, err = r.ResponseWriter.Write(p)
globalConnStats.incOutputBytes(n) globalConnStats.incOutputBytes(n)
// Check if it is s3 request // Check if it is s3 request
if r.isS3Request { if r.isS3Request {
@ -68,13 +58,12 @@ func (r *recordTrafficResponse) Write(p []byte) (n int, err error) {
// Calls the underlying Flush. // Calls the underlying Flush.
func (r *recordTrafficResponse) Flush() { func (r *recordTrafficResponse) Flush() {
r.writer.(http.Flusher).Flush() r.ResponseWriter.(http.Flusher).Flush()
} }
// Records the outgoing bytes through the responseWriter. // Records the outgoing bytes through the responseWriter.
type recordAPIStats struct { type recordAPIStats struct {
// wrapper for underlying http.ResponseWriter. http.ResponseWriter
writer http.ResponseWriter
TTFB time.Time // TimeToFirstByte. TTFB time.Time // TimeToFirstByte.
firstByteRead bool firstByteRead bool
respStatusCode int respStatusCode int
@ -84,12 +73,7 @@ type recordAPIStats struct {
// Calls the underlying WriteHeader. // Calls the underlying WriteHeader.
func (r *recordAPIStats) WriteHeader(i int) { func (r *recordAPIStats) WriteHeader(i int) {
r.respStatusCode = i r.respStatusCode = i
r.writer.WriteHeader(i) r.ResponseWriter.WriteHeader(i)
}
// Calls the underlying Header.
func (r *recordAPIStats) Header() http.Header {
return r.writer.Header()
} }
// Records the TTFB on the first byte write. // Records the TTFB on the first byte write.
@ -98,10 +82,10 @@ func (r *recordAPIStats) Write(p []byte) (n int, err error) {
r.TTFB = UTCNow() r.TTFB = UTCNow()
r.firstByteRead = true r.firstByteRead = true
} }
return r.writer.Write(p) return r.ResponseWriter.Write(p)
} }
// Calls the underlying Flush. // Calls the underlying Flush.
func (r *recordAPIStats) Flush() { func (r *recordAPIStats) Flush() {
r.writer.(http.Flusher).Flush() r.ResponseWriter.(http.Flusher).Flush()
} }