Golang StringCast Examples

Example #1

File: peer.go Project: djbarber/ipfs-hack

func (pi *PeerInfo) UnmarshalJSON(b []byte) error {
	var data map[string]interface{}
	err := json.Unmarshal(b, &data)
	if err != nil {
		return err
	}
	pid, err := IDB58Decode(data["ID"].(string))
	if err != nil {
		return err
	}
	pi.ID = pid
	addrs, ok := data["Addrs"].([]interface{})
	if ok {
		for _, a := range addrs {
			pi.Addrs = append(pi.Addrs, ma.StringCast(a.(string)))
		}
	}
	return nil
}

Example #2

File: ip.go Project: djbarber/ipfs-hack

package manet

import (
	"bytes"

	ma "github.com/djbarber/ipfs-hack/Godeps/_workspace/src/github.com/jbenet/go-multiaddr"
)

// Loopback Addresses
var (
	// IP4Loopback is the ip4 loopback multiaddr
	IP4Loopback = ma.StringCast("/ip4/127.0.0.1")

	// IP6Loopback is the ip6 loopback multiaddr
	IP6Loopback = ma.StringCast("/ip6/::1")

	// IP6LinkLocalLoopback is the ip6 link-local loopback multiaddr
	IP6LinkLocalLoopback = ma.StringCast("/ip6/fe80::1")
)

// Unspecified Addresses (used for )
var (
	IP4Unspecified = ma.StringCast("/ip4/0.0.0.0")
	IP6Unspecified = ma.StringCast("/ip6/::")
)

// IsThinWaist returns whether a Multiaddr starts with "Thin Waist" Protocols.
// This means: /{IP4, IP6}[/{TCP, UDP}]
func IsThinWaist(m ma.Multiaddr) bool {
	p := m.Protocols()

Example #3

File: main.go Project: djbarber/ipfs-hack

func IpfsStart(waitall bool) error {
	var addrs []string
	n := GetNumNodes()
	for i := 0; i < n; i++ {
		dir := IpfsDirN(i)
		cmd := exec.Command("ipfs", "daemon")
		cmd.Dir = dir
		cmd.Env = []string{"IPFS_PATH=" + dir}

		cmd.SysProcAttr = &syscall.SysProcAttr{Setsid: true}

		stdout, err := os.Create(path.Join(dir, "daemon.stdout"))
		if err != nil {
			return err
		}

		stderr, err := os.Create(path.Join(dir, "daemon.stderr"))
		if err != nil {
			return err
		}

		cmd.Stdout = stdout
		cmd.Stderr = stderr

		err = cmd.Start()
		if err != nil {
			return err
		}
		pid := cmd.Process.Pid

		fmt.Printf("Started daemon %d, pid = %d\n", i, pid)
		err = ioutil.WriteFile(path.Join(dir, "daemon.pid"), []byte(fmt.Sprint(pid)), 0666)
		if err != nil {
			return err
		}

		// Make sure node 0 is up before starting the rest so
		// bootstrapping works properly
		if i == 0 || waitall {
			cfg, err := serial.Load(path.Join(IpfsDirN(i), "config"))
			if err != nil {
				return err
			}

			maddr := ma.StringCast(cfg.Addresses.API)
			_, addr, err := manet.DialArgs(maddr)
			if err != nil {
				return err
			}

			addrs = append(addrs, addr)

			err = waitOnAPI(cfg.Identity.PeerID, addr)
			if err != nil {
				return err
			}
		}
	}
	if waitall {
		for i := 0; i < n; i++ {
			err := waitOnSwarmPeers(addrs[i])
			if err != nil {
				return err
			}
		}

	}
	return nil
}