/
pull_consumer.go
206 lines (184 loc) · 5.18 KB
/
pull_consumer.go
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package rocketmq
import (
"context"
"sync/atomic"
"github.com/apache/rocketmq-client-go/v2"
"github.com/apache/rocketmq-client-go/v2/consumer"
"github.com/apache/rocketmq-client-go/v2/primitive"
"github.com/apache/rocketmq-client-go/v2/rlog"
"github.com/douyu/jupiter/pkg/core/hooks"
"github.com/douyu/jupiter/pkg/core/xtrace"
"github.com/douyu/jupiter/pkg/util/xgo"
"github.com/douyu/jupiter/pkg/xlog"
"github.com/samber/lo"
"go.opentelemetry.io/otel/attribute"
"go.opentelemetry.io/otel/propagation"
semconv "go.opentelemetry.io/otel/semconv/v1.12.0"
"go.opentelemetry.io/otel/trace"
"go.uber.org/zap"
)
type PullConsumer struct {
rocketmq.PullConsumer
name string
PullConsumerConfig
subscribers map[string]func()
interceptors []primitive.Interceptor
started *atomic.Bool
done chan struct{}
}
func (conf *PullConsumerConfig) Build() *PullConsumer {
name := conf.Name
xlog.Jupiter().Debug("rocketmq's config: ", xlog.String("name", name), xlog.Any("conf", conf))
cc := &PullConsumer{
name: name,
PullConsumerConfig: *conf,
subscribers: make(map[string]func()),
interceptors: []primitive.Interceptor{},
done: make(chan struct{}, 1),
started: new(atomic.Bool),
}
cc.interceptors = append(cc.interceptors,
consumerMetricInterceptor(),
consumerSentinelInterceptor(cc.Addr),
)
// 服务启动前先start
hooks.Register(hooks.Stage_BeforeRun, func() {
err := cc.Start()
if err != nil {
xlog.Jupiter().Panic("rocketmq consumer start fail", zap.Error(err))
}
})
return cc
}
func (cc *PullConsumer) Start() error {
if cc.started.Load() {
return nil
}
var opts = []consumer.Option{
consumer.WithGroupName(cc.Group),
consumer.WithInstance(cc.InstanceName),
consumer.WithNameServer(cc.Addr),
consumer.WithMaxReconsumeTimes(cc.Reconsume),
consumer.WithInterceptor(cc.interceptors...),
consumer.WithConsumeMessageBatchMaxSize(cc.ConsumeMessageBatchMaxSize),
consumer.WithPullBatchSize(cc.PullBatchSize),
consumer.WithPullInterval(cc.PullInterval),
consumer.WithCredentials(primitive.Credentials{
AccessKey: cc.AccessKey,
SecretKey: cc.SecretKey,
}),
}
// 增加广播模式
if cc.PullConsumerConfig.MessageModel == "BroadCasting" {
opts = append(opts, consumer.WithConsumerModel(consumer.BroadCasting))
}
// 初始化 PushConsumer
client, err := rocketmq.NewPullConsumer(
opts...,
)
if err != nil {
xlog.Jupiter().Panic("new pull consumer",
xlog.FieldName(cc.name),
xlog.FieldExtMessage(cc.PullConsumerConfig),
xlog.FieldErr(err),
)
}
cc.PullConsumer = client
selector := consumer.MessageSelector{
Type: consumer.TAG,
Expression: "",
}
if cc.PullConsumerConfig.SubExpression != "*" {
selector.Expression = cc.PullConsumerConfig.SubExpression
}
if err := client.Subscribe(cc.Topic, selector); err != nil {
return err
}
if err != nil {
xlog.Jupiter().Panic("subscribe a topic for consuming",
xlog.FieldName(cc.name),
xlog.FieldExtMessage(cc.PullConsumerConfig),
xlog.FieldErr(err),
)
}
if cc.Enable {
if err := client.Start(); err != nil {
xlog.Jupiter().Panic("start pull consumer",
xlog.FieldName(cc.name),
xlog.FieldExtMessage(cc.PullConsumerConfig),
xlog.FieldErr(err),
)
return err
}
for _, fn := range cc.subscribers {
fn()
}
// 在应用退出的时候,保证注销
hooks.Register(hooks.Stage_BeforeStop, func() {
cc.Close()
})
}
cc.started.Store(true)
return nil
}
// MustStart panics when error found.
func (cc *PullConsumer) MustStart() {
lo.Must0(cc.Start())
}
func (cc *PullConsumer) Poll(ctx context.Context, f func(context.Context, []*primitive.MessageExt) error) {
if _, ok := cc.subscribers[cc.Topic]; ok {
xlog.Jupiter().Panic("duplicated register poll message", zap.String("topic", cc.Topic))
}
fn := func() {
xgo.Go(func() {
tracer := xtrace.NewTracer(trace.SpanKindConsumer)
for {
select {
case <-cc.done:
rlog.Info("Poll close message handle.", map[string]interface{}{
rlog.LogKeyConsumerGroup: cc.Group,
})
return
default:
pullResult, err := cc.PullConsumer.Poll(ctx, cc.PollTimeout)
if consumer.IsNoNewMsgError(err) {
continue
}
if err != nil {
xlog.Jupiter().Error("poll error", xlog.FieldErr(err))
continue
}
if f(ctx, pullResult.GetMsgList()) != nil {
continue
}
if cc.EnableTrace {
for _, msg := range pullResult.GetMsgList() {
var (
span trace.Span
)
carrier := propagation.MapCarrier{}
attrs := []attribute.KeyValue{
semconv.MessagingSystemKey.String("rocketmq"),
semconv.MessagingDestinationKindKey.String(msg.Topic),
}
for key, value := range msg.GetProperties() {
carrier[key] = value
}
ctx, span = tracer.Start(ctx, msg.Topic, carrier, trace.WithAttributes(attrs...))
defer span.End()
}
}
cc.PullConsumer.ACK(context.TODO(), pullResult, consumer.ConsumeSuccess)
}
}
})
}
cc.subscribers[cc.Topic] = fn
}
func (cc *PullConsumer) Close() {
close(cc.done)
err := cc.Shutdown()
if err != nil {
xlog.Jupiter().Warn("pull consumer close fail", zap.Error(err))
}
}