fix: update user nickname;

feat: add database/kafka.

internal/database/kafka/writer.go

@@ -0,0 +1,82 @@
+package kafka
+
+import (
+	"context"
+	"crypto/tls"
+	"errors"
+	"time"
+
+	kfkgo "github.com/segmentio/kafka-go"
+)
+
+type Payload struct {
+	Key        []byte
+	Value      []byte
+	Headers    []kfkgo.Header
+	WriterData any
+}
+
+func (c *client) WriteMessages(ctx context.Context, payloads ...*Payload) error {
+	if len(payloads) == 0 {
+		return nil
+	}
+
+	times := 0
+Retry:
+	if c.writer == nil {
+		c.Lock()
+		c.writer = &kfkgo.Writer{
+			Addr:         kfkgo.TCP(c.address),
+			Topic:        c.topic,
+			Balancer:     &kfkgo.Hash{},
+			WriteTimeout: 0,
+			RequiredAcks: 0,
+			Async:        false,
+			Transport: &kfkgo.Transport{
+				DialTimeout: 30 * time.Second,
+				TLS:         &tls.Config{InsecureSkipVerify: true}, // todo
+				SASL:        c.mechanism,
+				Context:     c.ctx,
+			},
+			AllowAutoTopicCreation: true,
+		}
+		c.Unlock()
+	}
+
+	now := time.Now()
+
+	msgs := make([]kfkgo.Message, 0, len(payloads))
+
+	for _, item := range payloads {
+		msgs = append(msgs, kfkgo.Message{
+			Key:        item.Key,
+			Value:      item.Value,
+			Headers:    item.Headers,
+			WriterData: item.WriterData,
+			Time:       now,
+		})
+	}
+
+	context.WithoutCancel(ctx)
+	if err := c.writer.WriteMessages(ctx, msgs...); err != nil {
+		if errors.Is(err, context.DeadlineExceeded) {
+			goto HandleError
+		}
+
+		if c.reconnection {
+			times++
+			c.logger.Warn("kafka.WriteMessage: reconnection after 30 seconds, times = %d, err = %s", times, err.Error())
+			time.Sleep(30 * time.Second)
+			c.Lock()
+			c.writer = nil
+			c.Unlock()
+			goto Retry
+		}
+
+	HandleError:
+		c.logger.Warn("kafka.WriteMessage: err = %s", err.Error())
+		return err
+	}
+
+	return nil
+}