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config.go
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config.go
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package main
import (
"context"
"flag"
"github.com/pelletier/go-toml"
"io/ioutil"
"log"
"os"
"os/signal"
)
type BucketConfig struct {
Region string
Bucket string
Prefix string
Profile string
}
type Config struct {
Source BucketConfig
Destination BucketConfig
Parallel int
}
func readConfig() Config {
var config Config
var configFile string
flag.StringVar(&configFile, "c", "config.toml", "path to config file")
flag.Parse()
file, err := ioutil.ReadFile(configFile)
if err != nil {
log.Fatal("Failed to read config file: ", err)
}
err = toml.Unmarshal(file, &config)
if err != nil {
log.Fatal("Failed to parse config file: ", err)
}
if config.Parallel < 1 {
log.Println("debug: using default parallelism level 10")
config.Parallel = 10
}
return config
}
func handleInterrupt(cancelFunc context.CancelFunc) {
signalChan := make(chan os.Signal, 1)
signal.Notify(signalChan, os.Interrupt)
go func() {
<-signalChan
log.Println("Received an interrupt, canceling copy...")
log.Println("")
cancelFunc()
log.Println("Exiting")
os.Exit(0)
}()
}