Metrics data is stored as structure, HTTP requests logging, got rid of context.

Metrics data now stored as structures. This is a first step for autodiscovery
helping for NMSes.

HTTP requests now logged.

Got rid of context.Context for getting metric data in applications
because context.Context is useless here.

internal/application/api_responder.go

@@ -1,13 +1,16 @@
 package application
 
 import (
-	"context"
-
-	"go.dev.pztrn.name/metricator/internal/common"
+	"go.dev.pztrn.name/metricator/internal/models"
 )
 
-func (a *Application) respond(ctx context.Context) string {
-	metricName := ctx.Value(common.ContextKeyMetric).(string)
+// Responds with needed data. First parameter is a type of data needed (like metric name),
+// second parameter is actual metric name. Second parameter also can be empty.
+func (a *Application) respond(rInfo *models.RequestInfo) string {
+	metric, err := a.storage.Get(rInfo.Metric)
+	if err != nil {
+		return ""
+	}
 
-	return a.storage.Get(metricName)
+	return metric.GetValue()
 }

internal/application/parser.go

@@ -3,11 +3,13 @@ package application
 import (
 	"log"
 	"strings"
+
+	"go.dev.pztrn.name/metricator/internal/models"
 )
 
 // Parses passed body and returns a map suitable for pushing into storage.
-func (a *Application) parse(body string) map[string]string {
-	data := make(map[string]string)
+func (a *Application) parse(body string) map[string]models.Metric {
+	data := make(map[string]models.Metric)
 
 	// ToDo: switch to bytes buffer and maybe do not read body in caller?
 	splittedBody := strings.Split(body, "\n")
@@ -46,7 +48,10 @@ func (a *Application) parse(body string) map[string]string {
 			}
 		}
 
-		data[name] = value
+		metric := models.NewMetric(name, "", params)
+		metric.SetValue(value)
+
+		data[name] = metric
 	}
 
 	log.Printf("Data parsed: %+v\n", data)