// createIDFile will generate a new ID for this agent and store it on disk
// the location depends on the operating system
func createIDFile(ctx Context) (id []byte, err error) {
defer func() {
if e := recover(); e != nil {
err = fmt.Errorf("createIDFile() -> %v", e)
}
}()
// generate an ID
sid := mig.GenB32ID()
// check that the storage DIR exist, and that it's a dir
tdir, err := os.Open(ctx.Agent.RunDir)
defer tdir.Close()
if err != nil {
// dir doesn't exist, create it
ctx.Channels.Log <- mig.Log{Desc: fmt.Sprintf("agent rundir is missing from '%s'. creating it", ctx.Agent.RunDir)}.Debug()
err = os.MkdirAll(ctx.Agent.RunDir, 0755)
if err != nil {
panic(err)
}
} else {
// open worked, verify that it's a dir
tdirMode, err := tdir.Stat()
if err != nil {
panic(err)
}
if !tdirMode.Mode().IsDir() {
ctx.Channels.Log <- mig.Log{Desc: fmt.Sprintf("'%s' is not a directory. removing it", ctx.Agent.RunDir)}.Debug()
// not a valid dir. destroy whatever it is, and recreate
err = os.Remove(ctx.Agent.RunDir)
if err != nil {
panic(err)
}
err = os.MkdirAll(ctx.Agent.RunDir, 0755)
if err != nil {
panic(err)
}
}
}
idFile := ctx.Agent.RunDir + ".migagtid"
// something exists at the location of the id file, just plain remove it
_ = os.Remove(idFile)
// write the ID file
err = ioutil.WriteFile(idFile, []byte(sid), 0400)
if err != nil {
panic(err)
}
// read ID from disk
id, err = ioutil.ReadFile(idFile)
if err != nil {
panic(err)
}
ctx.Channels.Log <- mig.Log{Desc: fmt.Sprintf("agent id created in '%s'", idFile)}.Debug()
return
}
// createIDFile will generate a new ID for this agent and store it on disk
// the location depends on the operating system
func createIDFile(ctx Context) (id []byte, err error) {
defer func() {
if e := recover(); e != nil {
err = fmt.Errorf("createIDFile() -> %v", e)
}
}()
// generate an ID
sid := mig.GenB32ID()
// check that the storage DIR exist, and that it's a dir
tdir, err := os.Open(ctx.Agent.RunDir)
defer tdir.Close()
if err != nil {
// dir doesn't exist, create it
err = os.MkdirAll(ctx.Agent.RunDir, 0755)
if err != nil {
panic(err)
}
} else {
// open worked, verify that it's a dir
tdirMode, err := tdir.Stat()
if err != nil {
panic(err)
}
if !tdirMode.Mode().IsDir() {
// not a valid dir. destroy whatever it is, and recreate
err = os.Remove(ctx.Agent.RunDir)
if err != nil {
panic(err)
}
err = os.MkdirAll(ctx.Agent.RunDir, 0755)
if err != nil {
panic(err)
}
}
}
idFile := ctx.Agent.RunDir + ".migagtid"
// something exists at the location of the id file, just plain remove it
_ = os.Remove(idFile)
// write the ID file
err = ioutil.WriteFile(idFile, []byte(sid), 0644)
if err != nil {
panic(err)
}
// read ID from disk
id, err = ioutil.ReadFile(idFile)
if err != nil {
panic(err)
}
return
}
// createIDFile will generate a new ID for this agent and store it on disk
// the location depends on the operating system
func createIDFile(loc string) (id []byte, err error) {
defer func() {
if e := recover(); e != nil {
err = fmt.Errorf("createIDFile() -> %v", e)
}
}()
// generate an ID
sid := mig.GenB32ID()
// check that the storage DIR exist, or create it
tdir, err := os.Open(loc)
if err != nil {
err = os.MkdirAll(loc, 0x400)
if err != nil {
panic(err)
}
} else {
tdirMode, err := tdir.Stat()
if err != nil {
panic(err)
}
if !tdirMode.Mode().IsDir() {
panic("Not a valid directory")
}
}
tdir.Close()
// write the ID
err = ioutil.WriteFile(loc+".migagtid", []byte(sid), 400)
if err != nil {
panic(err)
}
// read ID from disk
id, err = ioutil.ReadFile(loc + ".migagtid")
if err != nil {
panic(err)
}
return
}