a6c1e5d077
后端： 1. 服务级 outbox 基础设施全量落地——新增 service route / service catalog / route registry，重构 outbox engine、repository、event bus 和 model，按 `event_type -> service -> table/topic/group` 统一写入与投递，保留 `agent` 兼容壳但不再依赖共享 outbox 2. Kafka 投递、消费与启动装配同步切换——更新 kafka config、consumer、envelope，接入服务级 topic 与 consumer group，并同步调整 mysql 初始化、start/main/router 装配，保证各服务 relay / consumer 独立装配 3. 业务事件处理器按服务归属重接新 bus——`active-scheduler` 触发链路，以及 `agent` / `memory` / `notification` / `task` 相关 outbox handler 统一切到新路由注册与服务目录，避免新流量回流共享表 4. 同步更新《微服务四步迁移与第二阶段并行开发计划》，把阶段 1 改成当前基线并补齐结构图、阶段快照、风险回退和多代理执行口径
58 lines
1.4 KiB
Go
58 lines
1.4 KiB
Go
package kafka
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import (
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"context"
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"errors"
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"strings"
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segmentkafka "github.com/segmentio/kafka-go"
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)
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type Consumer struct {
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reader *segmentkafka.Reader
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}
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func NewConsumer(cfg Config) (*Consumer, error) {
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if len(cfg.Brokers) == 0 {
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return nil, errors.New("kafka brokers not configured")
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}
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if strings.TrimSpace(cfg.Topic) == "" {
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return nil, errors.New("kafka topic not configured")
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}
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if strings.TrimSpace(cfg.GroupID) == "" {
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return nil, errors.New("kafka groupID not configured")
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}
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reader := segmentkafka.NewReader(segmentkafka.ReaderConfig{
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Brokers: cfg.Brokers,
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Topic: cfg.Topic,
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GroupID: cfg.GroupID,
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MinBytes: 1,
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MaxBytes: 10e6,
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CommitInterval: 0,
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StartOffset: segmentkafka.FirstOffset,
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})
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return &Consumer{reader: reader}, nil
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}
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// Dequeue 从 Kafka 拉取一条消息（不自动提交 offset）。
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func (c *Consumer) Dequeue(ctx context.Context) (segmentkafka.Message, error) {
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if c == nil || c.reader == nil {
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return segmentkafka.Message{}, errors.New("kafka consumer not initialized")
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}
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return c.reader.FetchMessage(ctx)
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}
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func (c *Consumer) Commit(ctx context.Context, msg segmentkafka.Message) error {
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if c == nil || c.reader == nil {
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return errors.New("kafka consumer not initialized")
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}
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return c.reader.CommitMessages(ctx, msg)
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}
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func (c *Consumer) Close() error {
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if c == nil || c.reader == nil {
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return nil
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}
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return c.reader.Close()
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}
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