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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 receiveStreamToCheck(jobs chan Job, jobDone chan bool) {
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.content", // name
true, // durable
false, // delete when unused
false, // exclusive
false, // no-wait
nil, // arguments
)
failOnError(err, "Failed to declare a queue")
err = ch.Qos(
1, // prefetch count
0, // prefetch size
false, // global
)
failOnError(err, "Failed to set QoS")
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 j Job
err = dec.Decode(&j)
if err != nil {
log.Printf("decode message error: %s", err)
}
log.Printf("[ %s ] [>>] received segment check request", j.Id)
jobs <- j
log.Printf("[ %s ] [<-] waiting for segments", j.Id)
<-jobDone
log.Printf("[ %s ] [->] segment check completed", j.Id)
d.Ack(false)
}
}()
<-done
}
func receiveSegments(streamsToCheck chan Job) {
conn, err := amqp.Dial(os.Getenv("RABBITMQ_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.response", // 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 j Job
err = dec.Decode(&j)
if err != nil {
log.Printf("[ %s ] decode message error: %s", j.Id, err)
}
log.Printf("[ %s ] [>>] received segments", j.Id)
// check segments and write to database
streamsToCheck <- j
d.Ack(false)
}
}()
<-done
}