forked from OpenAtomFoundation/xupercore
/
runtime.go
219 lines (192 loc) · 4.61 KB
/
runtime.go
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package native
import (
"os"
"os/exec"
"strconv"
"sync"
"syscall"
"time"
docker "github.com/fsouza/go-dockerclient"
units "github.com/docker/go-units"
"github.com/superconsensus/matrixcore/kernel/contract"
log "github.com/xuperchain/log15"
)
var (
dockerOnce sync.Once
dockerClient *docker.Client
)
const (
pingTimeoutSecond = 2
)
// Process is the container of running contract
type Process interface {
// Start 启动Native code进程
Start() error
// Stop 停止进程,如果在超时时间内进程没有退出则强制杀死进程
Stop(timeout time.Duration) error
}
// DockerProcess is the process running as a docker container
type DockerProcess struct {
basedir string
startcmd *exec.Cmd
envs []string
mounts []string
// ports []string
cfg *contract.NativeDockerConfig
id string
log.Logger
}
func (d *DockerProcess) resourceConfig() (int64, int64, error) {
const cpuPeriod = 100000
var cpuLimit, memLimit int64
cpuLimit = int64(cpuPeriod * d.cfg.Cpus)
if d.cfg.Memory != "" {
var err error
memLimit, err = units.RAMInBytes(d.cfg.Memory)
if err != nil {
return 0, 0, err
}
}
return cpuLimit, memLimit, nil
}
// Start implements process interface
func (d *DockerProcess) Start() error {
client, err := getDockerClient()
if err != nil {
return err
}
volumes := map[string]struct{}{}
for _, mount := range d.mounts {
volumes[mount] = struct{}{}
}
// cmd.Args contains cmd binpath
cmd := d.startcmd.Args
env := []string{
"XCHAIN_PING_TIMEOUT=" + strconv.Itoa(pingTimeoutSecond),
}
env = append(env, d.envs...)
user := strconv.Itoa(os.Getuid()) + ":" + strconv.Itoa(os.Getgid())
cpulimit, memlimit, err := d.resourceConfig()
if err != nil {
return err
}
binds := make([]string, len(d.mounts))
for i := range d.mounts {
binds[i] = d.mounts[i] + ":" + d.mounts[i]
}
// portBinds := make(map[docker.Port][]docker.PortBinding)
// for _, port := range d.ports {
// key := docker.Port(port + "/tcp")
// value := []docker.PortBinding{
// {
// HostIP: "127.0.0.1",
// HostPort: port,
// },
// }
// portBinds[key] = value
// }
opts := docker.CreateContainerOptions{
Config: &docker.Config{
Volumes: volumes,
Env: env,
WorkingDir: d.basedir,
// NetworkDisabled: true,
Image: d.cfg.ImageName,
Cmd: cmd,
User: user,
},
HostConfig: &docker.HostConfig{
NetworkMode: "host",
AutoRemove: true,
Binds: binds,
CPUPeriod: cpulimit,
Memory: memlimit,
// PortBindings: portBinds,
},
}
container, err := client.CreateContainer(opts)
if err != nil {
return err
}
d.Info("create container success", "id", container.ID)
d.id = container.ID
err = client.StartContainer(d.id, nil)
if err != nil {
return err
}
d.Info("start container success", "id", d.id)
return nil
}
// Stop implements process interface
func (d *DockerProcess) Stop(timeout time.Duration) error {
client, err := getDockerClient()
if err != nil {
return err
}
err = client.StopContainer(d.id, uint(timeout.Seconds()))
if err != nil {
return err
}
d.Info("stop container success", "id", d.id)
client.WaitContainer(d.id)
d.Info("wait container success", "id", d.id)
return nil
}
// HostProcess is the process running as a native process
type HostProcess struct {
basedir string
startcmd *exec.Cmd
envs []string
cmd *exec.Cmd
log.Logger
}
// Start implements process interface
func (h *HostProcess) Start() error {
cmd := h.startcmd
cmd.Dir = h.basedir
cmd.SysProcAttr = &syscall.SysProcAttr{
Setsid: true,
Pgid: 0,
}
cmd.Env = []string{"XCHAIN_PING_TIMEOUT=" + strconv.Itoa(pingTimeoutSecond)}
cmd.Env = append(cmd.Env, h.envs...)
cmd.Env = append(cmd.Env, os.Environ()...)
cmd.Stdout = os.Stdout
cmd.Stderr = os.Stderr
if err := cmd.Start(); err != nil {
return err
}
h.Info("start command success", "pid", cmd.Process.Pid)
h.cmd = cmd
return nil
}
func processExists(pid int) bool {
return syscall.Kill(pid, syscall.Signal(0)) == nil
}
// Stop implements process interface
func (h *HostProcess) Stop(timeout time.Duration) error {
h.cmd.Process.Signal(syscall.SIGTERM)
deadline := time.Now().Add(timeout)
for time.Now().Before(deadline) {
if !processExists(h.cmd.Process.Pid) {
break
}
time.Sleep(time.Second)
}
// force kill if timeout
if !time.Now().Before(deadline) {
h.cmd.Process.Kill()
}
h.Info("stop command success", "pid", h.cmd.Process.Pid)
return h.cmd.Wait()
}
func getDockerClient() (*docker.Client, error) {
var err error
dockerOnce.Do(func() {
dockerClient, err = docker.NewClientFromEnv()
})
if err != nil {
return nil, err
}
return dockerClient, nil
}