fix

app/routers/metrics/endpoint.go

@@ -17,7 +17,7 @@ func AddEndpointMetric (r *http.Request) (interface{}, int) {
 
 	err = endpoints.AddEndpointMetric(body)
 	if err != nil {
-		log.Printf(err.Error())
+		log.Print(err.Error())
 		return nil, http.StatusInternalServerError
 	}
 

app/storage/clickhouse/client.go

@@ -3,6 +3,7 @@ package storage
 import (
 	"context"
 	"fmt"
+	"log"
 	"os"
 
 	"github.com/ClickHouse/clickhouse-go/v2"
@@ -20,6 +21,10 @@ func Connect() error {
 	return nil
 }
 
+func Close() {
+	Connection.Close()
+}
+
 func connect() (*driver.Conn, error) {
 	var (
 		ctx = context.Background()
@@ -45,4 +50,27 @@ func connect() (*driver.Conn, error) {
 		return nil, err
 	}
 	return &conn, nil
+}
+
+func Migrate() error {
+	rows, err := Connection.Query(
+		context.TODO(), 
+		`CREATE TABLE IF NOT EXISTS endpoints (
+			timestamp        DateTime,
+			service_name     LowCardinality(String),
+			endpoint         LowCardinality(String),
+			status_code      UInt16,
+			response_time_ms UInt32,
+			request_method   LowCardinality(String),
+		)
+		ENGINE = MergeTree
+		PARTITION BY toYYYYMM(timestamp)
+		ORDER BY (service_name, endpoint, request_method, timestamp)`,
+	)
+    if err != nil {
+        log.Fatal(err)
+		return err
+    }
+    defer rows.Close()
+	return nil
 }

app/storage/clickhouse/tables/endpoints.go

@@ -3,12 +3,13 @@ package storage
 import (
 	"context"
 	client "monitoring/app/storage/clickhouse"
+	"time"
 
 	"github.com/ClickHouse/clickhouse-go/v2/lib/driver"
 )
 
 type EndpointMetric struct {
-	Timestamp int `json:"timestamp"`
+	Timestamp time.Time `json:"timestamp"`
 	Service string `json:"service"`
 	Endpoint string `json:"endpoint"`
 	StatusCode int `json:"status_code"`

main.go

@@ -33,7 +33,8 @@ func main() {
 	if err != nil {
 		panic(err)
 	}
-
+	defer client.Close()
+	
 	http.HandleFunc("/api/v1/metrics/endpoint", handlerWrapper(endpoint.AddEndpointMetric))
 	log.Printf("Server started")
 	http.ListenAndServe(":1237", nil)