PhatPhuckDave
8d55bcb5ee
The point of this is (hopefully) some sort of resiliency I do not want to lose any messages ever And I want to be able to kill this process whenever it is misbehaving Hopefully this achieves that goal
91 lines
2.1 KiB
Go
91 lines
2.1 KiB
Go
package main
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import (
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"encoding/json"
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"fmt"
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"io"
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"log"
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"os"
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"os/signal"
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"syscall"
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"time"
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"github.com/nsqio/go-nsq"
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)
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var Error *log.Logger
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var Warning *log.Logger
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func init() {
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log.SetFlags(log.Lmicroseconds | log.Lshortfile)
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logFile, err := os.Create("main.log")
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if err != nil {
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log.Printf("Error creating log file: %v", err)
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os.Exit(1)
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}
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logger := io.MultiWriter(os.Stdout, logFile)
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log.SetOutput(logger)
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Error = log.New(io.MultiWriter(logFile, os.Stderr, os.Stdout),
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fmt.Sprintf("%sERROR:%s ", "\033[0;101m", "\033[0m"),
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log.Lmicroseconds|log.Lshortfile)
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Warning = log.New(io.MultiWriter(logFile, os.Stdout),
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fmt.Sprintf("%sWarning:%s ", "\033[0;93m", "\033[0m"),
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log.Lmicroseconds|log.Lshortfile)
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}
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const DOWNLOAD_WORKERS = 4
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type DLHandler struct{}
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func (*DLHandler) HandleMessage(message *nsq.Message) error {
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log.Printf("Received message '%s' with %d attempts", message.Body, message.Attempts)
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data := DownloadRequest{}
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err := json.Unmarshal(message.Body, &data)
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if err != nil {
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Error.Printf("Error unmarshalling message: %v", err)
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return err
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}
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log.Printf("Downloading %s", data.Link)
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err = Download(data.Link)
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if err != nil {
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Error.Printf("Error downloading %s: %v", data.Link, err)
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return err
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}
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message.Finish()
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return nil
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}
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func main() {
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config := nsq.NewConfig()
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config.MaxAttempts = 5
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config.MaxInFlight = DOWNLOAD_WORKERS
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config.MsgTimeout = 10 * time.Second
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consumer, err := nsq.NewConsumer("ytdqueue", "dl", config)
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if err != nil {
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Error.Printf("Error creating consumer: %v", err)
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return
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}
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for i := 0; i < DOWNLOAD_WORKERS; i++ {
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consumer.AddHandler(&DLHandler{})
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}
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err = consumer.ConnectToNSQD("nsq.site.quack-lab.dev:41505")
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if err != nil {
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Error.Printf("Error connecting to nsqlookupd: %v", err)
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return
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}
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sigChan := make(chan os.Signal, 1)
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signal.Notify(sigChan, syscall.SIGINT, syscall.SIGTERM)
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<-sigChan
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log.Println("Received signal to terminate. Initiating graceful shutdown...")
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consumer.Stop()
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<-consumer.StopChan
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log.Println("Graceful shutdown completed.")
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}
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