chore: add clickhouse as db for logs on agent and search

backend/internal/storage/clickhouse.go

@@ -1 +1,47 @@
 package storage
+
+import (
+	"context"
+	"fmt"
+
+	"github.com/ClickHouse/clickhouse-go/v2"
+	"github.com/ClickHouse/clickhouse-go/v2/lib/driver"
+)
+
+type ClickHouseConfig struct {
+	Host     string
+	User     string
+	Password string
+	Database string
+}
+
+func OpenClickHouse(cfg ClickHouseConfig) (driver.Conn, error) {
+	conn, err := clickhouse.Open(&clickhouse.Options{
+		Addr: []string{cfg.Host},
+		Auth: clickhouse.Auth{
+			Database: cfg.Database,
+			Username: cfg.User,
+			Password: cfg.Password,
+		},
+		Settings: clickhouse.Settings{
+			"max_execution_time": 60,
+		},
+		Compression: &clickhouse.Compression{
+			Method: clickhouse.CompressionLZ4,
+		},
+		DialTimeout:      30,
+		MaxOpenConns:     10,
+		MaxIdleConns:     5,
+		ConnMaxLifetime:  3600,
+		ConnOpenStrategy: clickhouse.ConnOpenInOrder,
+	})
+	if err != nil {
+		return nil, fmt.Errorf("clickhouse connect: %w", err)
+	}
+
+	if err := conn.Ping(context.Background()); err != nil {
+		return nil, fmt.Errorf("clickhouse ping: %w", err)
+	}
+
+	return conn, nil
+}