Little refactor for Prometheus metrics parser.

internal/application/parser.go

@@ -39,11 +39,27 @@ func (a *Application) parse(body string) map[string]string {
 		} else {
 			value = strings.Split(line, " ")[1]
 			name = strings.Split(line, "{")[0]
+			params = a.getParametersForPrometheusMetric(line)
 
-			// Parse params into "name:value" string.
+			for _, param := range params {
+				name += "/" + param
+			}
+		}
+
+		data[name] = value
+	}
+
+	log.Printf("Data parsed: %+v\n", data)
+
+	return data
+}
+
+// Parses passed line and returns a slice of strings with parameters parsed.
+func (a *Application) getParametersForPrometheusMetric(line string) []string {
 	valuesString := strings.Split(strings.Split(line, "{")[1], "}")[0]
 
 	var (
+		params                                                   []string
 		paramName, paramValue                                    string
 		paramNameFinished, paramValueStarted, paramValueFinished bool
 	)
@@ -56,6 +72,10 @@ func (a *Application) parse(body string) map[string]string {
 
 			continue
 		}
+
+		// Sometimes nestif causes questions, like here. Is code below is
+		// "deply nested"? I think not. So:
+		// nolint:nestif
 		if !paramNameFinished {
 			if string(r) != "=" {
 				paramName += string(r)
@@ -91,15 +111,5 @@ func (a *Application) parse(body string) map[string]string {
 		params = append(params, paramName+":"+paramValue)
 	}
 
-			for _, param := range params {
-				name += "/" + param
-			}
-		}
-
-		data[name] = value
-	}
-
-	log.Printf("Data parsed: %+v\n", data)
-
-	return data
+	return params
 }