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// Copyright 2019 Nick White.
// Use of this source code is governed by the GPLv3
// license that can be found in the LICENSE file.
package main
import (
"flag"
"fmt"
"log"
"rescribe.xyz/bookpipeline"
)
const usage = `Usage: spotme [-n num]
Create new spot instances for the book pipeline.
`
type SpotPipeliner interface {
Init() error
StartInstances(n int) error
}
// NullWriter is used so non-verbose logging may be discarded
type NullWriter bool
func (w NullWriter) Write(p []byte) (n int, err error) {
return len(p), nil
}
func main() {
num := flag.Int("n", 1, "number of instances to start")
flag.Usage = func() {
fmt.Fprintf(flag.CommandLine.Output(), usage)
flag.PrintDefaults()
}
flag.Parse()
var verboselog *log.Logger
var n NullWriter
verboselog = log.New(n, "", 0)
var conn SpotPipeliner
conn = &bookpipeline.AwsConn{Region: "eu-west-2", Logger: verboselog}
err := conn.Init()
if err != nil {
log.Fatalln("Failed to set up cloud connection:", err)
}
log.Println("Starting spot instances")
err = conn.StartInstances(*num)
if err != nil {
log.Fatalln("Failed to start a spot instance:", err)
}
log.Println("Spot instance request sent successfully")
}
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