Golang GenB32ID Examples

Example #1

File: context.go Project: Novemburr/mig

// 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
}

Example #2

File: context.go Project: netantho/mig

// 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
}

Example #3

File: context.go Project: jeffbryner/mig

// 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
}