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receive.go
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receive.go
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package main
import (
"bytes"
"encoding/gob"
amqp "github.com/rabbitmq/amqp091-go"
"log"
"os"
)
func receive(results chan Payload) {
url := os.Getenv("RABBITMQ_URL")
log.Printf("RABBITMQ_URL: %s", url)
conn, err := amqp.Dial(url)
failOnError(err, "Failed to connect to RabbitMQ")
defer conn.Close()
ch, err := conn.Channel()
failOnError(err, "Failed to open a channel")
defer ch.Close()
q, err := ch.QueueDeclare(
"q.segments.request", // name
false, // durable
false, // delete when unused
false, // exclusive
false, // no-wait
nil, // arguments
)
failOnError(err, "Failed to declare a queue")
messages, err := ch.Consume(
q.Name, // queue
"", // consumer
false, // auto-ack
false, // exclusive
false, // no-local
false, // no-wait
nil, // args
)
failOnError(err, "Failed to register a consumer")
done := make(chan bool)
go func() {
for d := range messages {
dec := gob.NewDecoder(bytes.NewReader(d.Body))
var p Payload
err = dec.Decode(&p)
if err != nil {
log.Printf("decode error: %s", err.Error())
}
log.Printf("[ %s ] [>>] received request for segments", p.Id)
segments, err := GetSegments(p.URL)
if err != nil {
log.Printf("[ %s ] unable to get segments", p.Id)
}
p.Segments = segments.ToSlice()
results <- p
d.Ack(false)
}
}()
<-done
}