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我已將RabbitMQ pub/sub tutorial轉換爲下面的虛擬測試。不知何故,它不像預期的那樣工作。RabbitMQ pub/sub實施不起作用
amqpURL
是有效的AMQP服務(即RabbitMQ)URL。我用隊列示例測試了它,它可以工作。不知何故,它在「交換」失敗
我希望TestDummy記錄「[x] Hello World」。不知何故,它沒有發生。只有發送一半按預期工作。
我得到了什麼問題?
import (
"fmt"
"log"
"testing"
"github.com/streadway/amqp"
)
func TestDummy(t *testing.T) {
done := exchangeReceive()
exchangeSend("Hello World")
<-done
}
func exchangeSend(msg string) {
failOnError := func(err error, msg string) {
if err != nil {
log.Fatalf("%s: %s", msg, err)
panic(fmt.Sprintf("%s: %s", msg, err))
}
}
log.Printf("exchangeSend: connect %s", amqpURL)
conn, err := amqp.Dial(amqpURL)
failOnError(err, "Failed to connect to RabbitMQ")
defer conn.Close()
ch, err := conn.Channel()
failOnError(err, "Failed to open a channel")
defer ch.Close()
err = ch.ExchangeDeclare(
"logs", // name
"fanout", // type
true, // durable
false, // auto-deleted
false, // internal
false, // no-wait
nil, // arguments
)
failOnError(err, "Failed to declare an exchange")
body := []byte(msg)
err = ch.Publish(
"logs", // exchange
"", // routing key
false, // mandatory
false, // immediate
amqp.Publishing{
ContentType: "text/plain",
Body: []byte(body),
})
failOnError(err, "Failed to publish a message")
log.Printf(" [x] Sent %s", body)
}
func exchangeReceive() <-chan bool {
done := make(chan bool)
failOnError := func(err error, msg string) {
if err != nil {
log.Fatalf("%s: %s", msg, err)
panic(fmt.Sprintf("%s: %s", msg, err))
}
}
log.Printf("exchangeReceive: connect %s", amqpURL)
conn, err := amqp.Dial(amqpURL)
failOnError(err, "Failed to connect to RabbitMQ")
defer conn.Close()
ch, err := conn.Channel()
failOnError(err, "Failed to open a channel")
defer ch.Close()
err = ch.ExchangeDeclare(
"logs", // name
"fanout", // type
true, // durable
false, // auto-deleted
false, // internal
false, // no-wait
nil, // arguments
)
failOnError(err, "Failed to declare an exchange")
q, err := ch.QueueDeclare(
"", // name
false, // durable
false, // delete when usused
true, // exclusive
false, // no-wait
nil, // arguments
)
failOnError(err, "Failed to declare a queue")
err = ch.QueueBind(
q.Name, // queue name
"", // routing key
"logs", // exchange
false,
nil)
failOnError(err, "Failed to bind a queue")
msgs, err := ch.Consume(
q.Name, // queue
"", // consumer
true, // auto-ack
false, // exclusive
false, // no-local
false, // no-wait
nil, // args
)
failOnError(err, "Failed to register a consumer")
go func() {
for d := range msgs {
log.Printf(" [x] %s", d.Body)
done <- true
}
}()
log.Printf(" [*] Waiting for logs. To exit press CTRL+C")
return done
}