add SetLogger() method on Request (#584)

client.go

@@ -390,6 +390,7 @@ func (c *Client) R() *Request {
 		multipartFields: []*MultipartField{},
 		PathParams:      map[string]string{},
 		jsonEscapeHTML:  true,
+		log:             c.log,
 	}
 	return r
 }

middleware.go

@@ -233,7 +233,7 @@ func addCredentials(c *Client, r *Request) error {
 
 	if !c.DisableWarn {
 		if isBasicAuth && !strings.HasPrefix(r.URL, "https") {
-			c.log.Warnf("Using Basic Auth in HTTP mode is not secure, use HTTPS")
+			r.log.Warnf("Using Basic Auth in HTTP mode is not secure, use HTTPS")
 		}
 	}
 
@@ -311,7 +311,7 @@ func responseLogger(c *Client, res *Response) error {
 		}
 		debugLog += "==============================================================================\n"
 
-		c.log.Debugf("%s", debugLog)
+		res.Request.log.Debugf("%s", debugLog)
 	}
 
 	return nil

request.go

@@ -65,6 +65,7 @@ type Request struct {
 	client              *Client
 	bodyBuf             *bytes.Buffer
 	clientTrace         *clientTrace
+	log                 Logger
 	multipartFiles      []*File
 	multipartFields     []*MultipartField
 	retryConditions     []RetryConditionFunc
@@ -212,7 +213,7 @@ func (r *Request) SetQueryString(query string) *Request {
 			}
 		}
 	} else {
-		r.client.log.Errorf("%v", err)
+		r.log.Errorf("%v", err)
 	}
 	return r
 }
@@ -596,6 +597,15 @@ func (r *Request) SetCookies(rs []*http.Cookie) *Request {
 	return r
 }
 
+// SetLogger method sets given writer for logging Resty request and response details.
+// By default, requests and responses inherit their logger from the client.
+//
+// Compliant to interface `resty.Logger`.
+func (r *Request) SetLogger(l Logger) *Request {
+	r.log = l
+	return r
+}
+
 // AddRetryCondition method adds a retry condition function to the request's
 // array of functions that are checked to determine if the request is retried.
 // The request will retry if any of the functions return true and error is nil.
@@ -770,7 +780,7 @@ func (r *Request) Execute(method, url string) (*Response, error) {
 
 			resp, err = r.client.execute(r)
 			if err != nil {
-				r.client.log.Errorf("%v, Attempt %v", err, r.Attempt)
+				r.log.Errorf("%v, Attempt %v", err, r.Attempt)
 			}
 
 			return resp, err

request_test.go

@@ -551,6 +551,32 @@ func TestRequestBasicAuth(t *testing.T) {
 	logResponse(t, resp)
 }
 
+func TestRequestInsecureBasicAuth(t *testing.T) {
+	ts := createAuthServerTLSOptional(t, false)
+	defer ts.Close()
+
+	var logBuf bytes.Buffer
+	logger := createLogger()
+	logger.l.SetOutput(&logBuf)
+
+	c := dc()
+	c.SetHostURL(ts.URL)
+
+	resp, err := c.R().
+		SetBasicAuth("myuser", "basicauth").
+		SetResult(&AuthSuccess{}).
+		SetLogger(logger).
+		Post("/login")
+
+	assertError(t, err)
+	assertEqual(t, http.StatusOK, resp.StatusCode())
+	assertEqual(t, true, strings.Contains(logBuf.String(), "WARN RESTY Using Basic Auth in HTTP mode is not secure, use HTTPS"))
+
+	t.Logf("Result Success: %q", resp.Result().(*AuthSuccess))
+	logResponse(t, resp)
+	t.Logf("captured request-level logs: %s", logBuf.String())
+}
+
 func TestRequestBasicAuthFail(t *testing.T) {
 	ts := createAuthServer(t)
 	defer ts.Close()

resty_test.go

@@ -448,7 +448,11 @@ func createFilePostServer(t *testing.T) *httptest.Server {
 }
 
 func createAuthServer(t *testing.T) *httptest.Server {
-	ts := httptest.NewTLSServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+	return createAuthServerTLSOptional(t, true)
+}
+
+func createAuthServerTLSOptional(t *testing.T, useTLS bool) *httptest.Server {
+	handler := http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		t.Logf("Method: %v", r.Method)
 		t.Logf("Path: %v", r.URL.Path)
 		t.Logf("Content-Type: %v", r.Header.Get(hdrContentTypeKey))
@@ -498,9 +502,11 @@ func createAuthServer(t *testing.T) *httptest.Server {
 
 			return
 		}
-	}))
-
-	return ts
+	})
+	if useTLS {
+		return httptest.NewTLSServer(handler)
+	}
+	return httptest.NewServer(handler)
 }
 
 func createGenServer(t *testing.T) *httptest.Server {