wip

server/clickhouse.go

@@ -0,0 +1,66 @@
+package server
+
+import (
+	"context"
+	"time"
+
+	"github.com/ClickHouse/clickhouse-go/v2"
+	"github.com/ClickHouse/clickhouse-go/v2/lib/driver"
+	"go.ntppool.org/data-api/version"
+	"golang.org/x/exp/slog"
+)
+
+func (srv *Server) chConn(ctx context.Context) (driver.Conn, error) {
+
+	conn, err := clickhouse.Open(&clickhouse.Options{
+		Addr: []string{"10.43.207.123:9000"},
+		Auth: clickhouse.Auth{
+			Database: "geodns3",
+			Username: "default",
+			Password: "",
+		},
+		// Debug: true,
+		// Debugf: func(format string, v ...interface{}) {
+		// 	slog.Info("debug format", "format", format)
+		// 	fmt.Printf(format+"\n", v)
+		// },
+		Settings: clickhouse.Settings{
+			"max_execution_time": 60,
+		},
+		Compression: &clickhouse.Compression{
+			Method: clickhouse.CompressionLZ4,
+		},
+		DialTimeout:          time.Second * 5,
+		MaxOpenConns:         5,
+		MaxIdleConns:         5,
+		ConnMaxLifetime:      time.Duration(10) * time.Minute,
+		ConnOpenStrategy:     clickhouse.ConnOpenInOrder,
+		BlockBufferSize:      10,
+		MaxCompressionBuffer: 10240,
+		ClientInfo: clickhouse.ClientInfo{
+			Products: []struct {
+				Name    string
+				Version string
+			}{
+				{Name: "data-api", Version: version.Version()},
+			},
+		},
+	})
+	if err != nil {
+		return nil, err
+	}
+
+	v, err := conn.ServerVersion()
+	if err != nil {
+		return nil, err
+	}
+	slog.Info("clickhouse connection", "version", v)
+
+	err = conn.Ping(ctx)
+	if err != nil {
+		slog.Error("clickhouse ping", "err", err)
+		return nil, err
+	}
+
+	return conn, nil
+}