Golang types.Pod类代码示例

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本文整理汇总了Golang中github.com/coreos/rkt/stage1/common/types.Pod类的典型用法代码示例。如果您正苦于以下问题：Golang Pod类的具体用法？Golang Pod怎么用？Golang Pod使用的例子？那么恭喜您, 这里精选的类代码示例或许可以为您提供帮助。

在下文中一共展示了Pod类的4个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于我们的系统推荐出更棒的Golang代码示例。

示例1: appToSystemd

// appToSystemd transforms the provided RuntimeApp+ImageManifest into systemd units
func appToSystemd(p *stage1commontypes.Pod, ra *schema.RuntimeApp, interactive bool, flavor string, privateUsers string) error {
	app := ra.App
	appName := ra.Name
	imgName := p.AppNameToImageName(appName)

	if len(app.Exec) == 0 {
		return fmt.Errorf(`image %q has an empty "exec" (try --exec=BINARY)`, imgName)
	}

	workDir := "/"
	if app.WorkingDirectory != "" {
		workDir = app.WorkingDirectory
	}

	env := app.Environment

	env.Set("AC_APP_NAME", appName.String())
	if p.MetadataServiceURL != "" {
		env.Set("AC_METADATA_URL", p.MetadataServiceURL)
	}

	if err := writeEnvFile(p, env, appName, privateUsers); err != nil {
		return errwrap.Wrap(errors.New("unable to write environment file"), err)
	}

	var _uid, gid int
	var err error

	uidRange := uid.NewBlankUidRange()
	if err := uidRange.Deserialize([]byte(privateUsers)); err != nil {
		return errwrap.Wrap(errors.New("unable to deserialize uid range"), err)
	}

	if strings.HasPrefix(app.User, "/") {
		var stat syscall.Stat_t
		if err = syscall.Lstat(filepath.Join(common.AppRootfsPath(p.Root, appName),
			app.User), &stat); err != nil {
			return errwrap.Wrap(fmt.Errorf("unable to get uid from file %q",
				app.User), err)
		}
		uidReal, _, err := uidRange.UnshiftRange(stat.Uid, 0)
		if err != nil {
			return errwrap.Wrap(errors.New("unable to determine real uid"), err)
		}
		_uid = int(uidReal)
	} else {
		_uid, err = strconv.Atoi(app.User)
		if err != nil {
			_uid, err = passwd.LookupUidFromFile(app.User,
				filepath.Join(common.AppRootfsPath(p.Root, appName), "etc/passwd"))
			if err != nil {
				return errwrap.Wrap(fmt.Errorf("cannot lookup user %q", app.User), err)
			}
		}
	}

	if strings.HasPrefix(app.Group, "/") {
		var stat syscall.Stat_t
		if err = syscall.Lstat(filepath.Join(common.AppRootfsPath(p.Root, appName),
			app.Group), &stat); err != nil {
			return errwrap.Wrap(fmt.Errorf("unable to get gid from file %q",
				app.Group), err)
		}
		_, gidReal, err := uidRange.UnshiftRange(0, stat.Gid)
		if err != nil {
			return errwrap.Wrap(errors.New("unable to determine real gid"), err)
		}
		gid = int(gidReal)
	} else {
		gid, err = strconv.Atoi(app.Group)
		if err != nil {
			gid, err = group.LookupGidFromFile(app.Group,
				filepath.Join(common.AppRootfsPath(p.Root, appName), "etc/group"))
			if err != nil {
				return errwrap.Wrap(fmt.Errorf("cannot lookup group %q", app.Group), err)
			}
		}
	}

	execWrap := []string{"/appexec", common.RelAppRootfsPath(appName), workDir, RelEnvFilePath(appName),
		strconv.Itoa(_uid), generateGidArg(gid, app.SupplementaryGIDs), "--"}
	execStart := quoteExec(append(execWrap, app.Exec...))
	opts := []*unit.UnitOption{
		unit.NewUnitOption("Unit", "Description", fmt.Sprintf("Application=%v Image=%v", appName, imgName)),
		unit.NewUnitOption("Unit", "DefaultDependencies", "false"),
		unit.NewUnitOption("Unit", "Wants", fmt.Sprintf("reaper-%s.service", appName)),
		unit.NewUnitOption("Service", "Restart", "no"),
		unit.NewUnitOption("Service", "ExecStart", execStart),
		unit.NewUnitOption("Service", "User", "0"),
		unit.NewUnitOption("Service", "Group", "0"),
	}

	if interactive {
		opts = append(opts, unit.NewUnitOption("Service", "StandardInput", "tty"))
		opts = append(opts, unit.NewUnitOption("Service", "StandardOutput", "tty"))
		opts = append(opts, unit.NewUnitOption("Service", "StandardError", "tty"))
	} else {
		opts = append(opts, unit.NewUnitOption("Service", "StandardOutput", "journal+console"))
		opts = append(opts, unit.NewUnitOption("Service", "StandardError", "journal+console"))
//.........这里部分代码省略.........

开发者ID:carriercomm，项目名称:rkt，代码行数:101，代码来源:pod.go

示例2: getArgsEnv

// getArgsEnv returns the nspawn or lkvm args and env according to the flavor
// as the first two return values respectively.
func getArgsEnv(p *stage1commontypes.Pod, flavor string, canMachinedRegister bool, debug bool, n *networking.Networking) ([]string, []string, error) {
	var args []string
	env := os.Environ()

	// We store the pod's flavor so we can later garbage collect it correctly
	if err := os.Symlink(flavor, filepath.Join(p.Root, stage1initcommon.FlavorFile)); err != nil {
		return nil, nil, errwrap.Wrap(errors.New("failed to create flavor symlink"), err)
	}

	// set hostname inside pod
	// According to systemd manual (https://www.freedesktop.org/software/systemd/man/hostname.html) :
	// "The /etc/hostname file configures the name of the local system that is set
	// during boot using the sethostname system call"
	if p.Hostname == "" {
		p.Hostname = stage1initcommon.GetMachineID(p)
	}
	hostnamePath := filepath.Join(common.Stage1RootfsPath(p.Root), "etc/hostname")
	if err := ioutil.WriteFile(hostnamePath, []byte(p.Hostname), 0644); err != nil {
		return nil, nil, fmt.Errorf("error writing %s, %s", hostnamePath, err)
	}

	// systemd-nspawn needs /etc/machine-id to link the container's journal
	// to the host. Since systemd-v230, /etc/machine-id is mandatory, see
	// https://github.com/systemd/systemd/commit/e01ff70a77e781734e1e73a2238af2e9bf7967a8
	mPath := filepath.Join(common.Stage1RootfsPath(p.Root), "etc", "machine-id")
	machineID := strings.Replace(p.UUID.String(), "-", "", -1)

	switch flavor {
	case "kvm":
		if p.PrivateUsers != "" {
			return nil, nil, fmt.Errorf("flag --private-users cannot be used with an lkvm stage1")
		}

		// kernel and hypervisor binaries are located relative to the working directory
		// of init (/var/lib/rkt/..../uuid)
		// TODO: move to path.go
		kernelPath := filepath.Join(common.Stage1RootfsPath(p.Root), "bzImage")
		netDescriptions := kvm.GetNetworkDescriptions(n)

		cpu, mem := kvm.GetAppsResources(p.Manifest.Apps)

		// Parse hypervisor
		hv, err := KvmCheckHypervisor(common.Stage1RootfsPath(p.Root))
		if err != nil {
			return nil, nil, err
		}

		// Set start command for hypervisor
		StartCmd := hvlkvm.StartCmd
		switch hv {
		case "lkvm":
			StartCmd = hvlkvm.StartCmd
		case "qemu":
			StartCmd = hvqemu.StartCmd
		default:
			return nil, nil, fmt.Errorf("unrecognized hypervisor")
		}

		hvStartCmd := StartCmd(
			common.Stage1RootfsPath(p.Root),
			p.UUID.String(),
			kernelPath,
			netDescriptions,
			cpu,
			mem,
			debug,
		)

		if hvStartCmd == nil {
			return nil, nil, fmt.Errorf("no hypervisor")
		}

		args = append(args, hvStartCmd...)

		// lkvm requires $HOME to be defined,
		// see https://github.com/coreos/rkt/issues/1393
		if os.Getenv("HOME") == "" {
			env = append(env, "HOME=/root")
		}

		if err := linkJournal(common.Stage1RootfsPath(p.Root), machineID); err != nil {
			return nil, nil, errwrap.Wrap(errors.New("error linking pod's journal"), err)
		}

		// use only dynamic libraries provided in the image
		// from systemd v231 there's a new internal libsystemd-shared-v231.so
		// which is present in /usr/lib/systemd
		env = append(env, "LD_LIBRARY_PATH="+filepath.Join(common.Stage1RootfsPath(p.Root), "usr/lib/systemd"))

		return args, env, nil

	case "coreos":
		args = append(args, filepath.Join(common.Stage1RootfsPath(p.Root), interpBin))
		args = append(args, filepath.Join(common.Stage1RootfsPath(p.Root), nspawnBin))
		args = append(args, "--boot")             // Launch systemd in the pod
		args = append(args, "--notify-ready=yes") // From systemd v231

		if context := os.Getenv(common.EnvSELinuxContext); context != "" {
//.........这里部分代码省略.........

开发者ID:intelsdi-x，项目名称:rkt，代码行数:101，代码来源:init.go

示例3: appToSystemd

// appToSystemd transforms the provided RuntimeApp+ImageManifest into systemd units
func appToSystemd(p *stage1commontypes.Pod, ra *schema.RuntimeApp, interactive bool, flavor string, privateUsers string) error {
	app := ra.App
	appName := ra.Name
	imgName := p.AppNameToImageName(appName)

	if len(app.Exec) == 0 {
		return fmt.Errorf(`image %q has an empty "exec" (try --exec=BINARY)`, imgName)
	}

	workDir := "/"
	if app.WorkingDirectory != "" {
		workDir = app.WorkingDirectory
	}

	env := app.Environment

	env.Set("AC_APP_NAME", appName.String())
	if p.MetadataServiceURL != "" {
		env.Set("AC_METADATA_URL", p.MetadataServiceURL)
	}

	envFilePath := EnvFilePath(p.Root, appName)

	uidRange := user.NewBlankUidRange()
	if err := uidRange.Deserialize([]byte(privateUsers)); err != nil {
		return err
	}

	if err := writeEnvFile(p, env, appName, uidRange, '\n', envFilePath); err != nil {
		return errwrap.Wrap(errors.New("unable to write environment file for systemd"), err)
	}

	u, g, err := parseUserGroup(p, ra, uidRange)
	if err != nil {
		return err
	}

	if err := generateSysusers(p, ra, u, g, uidRange); err != nil {
		return errwrap.Wrap(errors.New("unable to generate sysusers"), err)
	}

	binPath, err := findBinPath(p, appName, *app, workDir, app.Exec[0])
	if err != nil {
		return err
	}

	var supplementaryGroups []string
	for _, g := range app.SupplementaryGIDs {
		supplementaryGroups = append(supplementaryGroups, strconv.Itoa(g))
	}

	capabilitiesStr, err := getAppCapabilities(app.Isolators)
	if err != nil {
		return err
	}

	noNewPrivileges := getAppNoNewPrivileges(app.Isolators)

	execStart := append([]string{binPath}, app.Exec[1:]...)
	execStartString := quoteExec(execStart)
	opts := []*unit.UnitOption{
		unit.NewUnitOption("Unit", "Description", fmt.Sprintf("Application=%v Image=%v", appName, imgName)),
		unit.NewUnitOption("Unit", "DefaultDependencies", "false"),
		unit.NewUnitOption("Unit", "Wants", fmt.Sprintf("reaper-%s.service", appName)),
		unit.NewUnitOption("Service", "Restart", "no"),
		unit.NewUnitOption("Service", "ExecStart", execStartString),
		unit.NewUnitOption("Service", "RootDirectory", common.RelAppRootfsPath(appName)),
		// MountFlags=shared creates a new mount namespace and (as unintuitive
		// as it might seem) makes sure the mount is slave+shared.
		unit.NewUnitOption("Service", "MountFlags", "shared"),
		unit.NewUnitOption("Service", "WorkingDirectory", workDir),
		unit.NewUnitOption("Service", "EnvironmentFile", RelEnvFilePath(appName)),
		unit.NewUnitOption("Service", "User", strconv.Itoa(u)),
		unit.NewUnitOption("Service", "Group", strconv.Itoa(g)),
		unit.NewUnitOption("Service", "SupplementaryGroups", strings.Join(supplementaryGroups, " ")),
		unit.NewUnitOption("Service", "CapabilityBoundingSet", strings.Join(capabilitiesStr, " ")),
		unit.NewUnitOption("Service", "NoNewPrivileges", strconv.FormatBool(noNewPrivileges)),
		// This helps working around a race
		// (https://github.com/systemd/systemd/issues/2913) that causes the
		// systemd unit name not getting written to the journal if the unit is
		// short-lived and runs as non-root.
		unit.NewUnitOption("Service", "SyslogIdentifier", appName.String()),
	}

	// Restrict access to sensitive paths (eg. procfs)
	opts = protectSystemFiles(opts, appName)

	if ra.ReadOnlyRootFS {
		opts = append(opts, unit.NewUnitOption("Service", "ReadOnlyDirectories", common.RelAppRootfsPath(appName)))
	}

	// TODO(tmrts): Extract this logic into a utility function.
	vols := make(map[types.ACName]types.Volume)
	for _, v := range p.Manifest.Volumes {
		vols[v.Name] = v
	}

	absRoot, err := filepath.Abs(p.Root) // Absolute path to the pod's rootfs.
	if err != nil {
//.........这里部分代码省略.........

开发者ID:yanghongkjxy，项目名称:rkt，代码行数:101，代码来源:pod.go

示例4: appToSystemd

// appToSystemd transforms the provided RuntimeApp+ImageManifest into systemd units
func appToSystemd(p *stage1commontypes.Pod, ra *schema.RuntimeApp, interactive bool, flavor string, privateUsers string) error {
	app := ra.App
	appName := ra.Name
	imgName := p.AppNameToImageName(appName)

	if len(app.Exec) == 0 {
		return fmt.Errorf(`image %q has an empty "exec" (try --exec=BINARY)`, imgName)
	}

	workDir := "/"
	if app.WorkingDirectory != "" {
		workDir = app.WorkingDirectory
	}

	env := app.Environment

	env.Set("AC_APP_NAME", appName.String())
	if p.MetadataServiceURL != "" {
		env.Set("AC_METADATA_URL", p.MetadataServiceURL)
	}

	if err := writeEnvFile(p, env, appName, privateUsers); err != nil {
		return errwrap.Wrap(errors.New("unable to write environment file"), err)
	}

	// This is a partial implementation for app.User and app.Group:
	// For now, only numeric ids (and the string "root") are supported.
	var uid, gid int
	var err error
	if app.User == "root" {
		uid = 0
	} else {
		uid, err = strconv.Atoi(app.User)
		if err != nil {
			return fmt.Errorf("non-numerical user id not supported yet")
		}
	}
	if app.Group == "root" {
		gid = 0
	} else {
		gid, err = strconv.Atoi(app.Group)
		if err != nil {
			return fmt.Errorf("non-numerical group id not supported yet")
		}
	}

	execWrap := []string{"/appexec", common.RelAppRootfsPath(appName), workDir, RelEnvFilePath(appName), strconv.Itoa(uid), generateGidArg(gid, app.SupplementaryGIDs)}
	execStart := quoteExec(append(execWrap, app.Exec...))
	opts := []*unit.UnitOption{
		unit.NewUnitOption("Unit", "Description", fmt.Sprintf("Application=%v Image=%v", appName, imgName)),
		unit.NewUnitOption("Unit", "DefaultDependencies", "false"),
		unit.NewUnitOption("Unit", "Wants", fmt.Sprintf("reaper-%s.service", appName)),
		unit.NewUnitOption("Service", "Restart", "no"),
		unit.NewUnitOption("Service", "ExecStart", execStart),
		unit.NewUnitOption("Service", "User", "0"),
		unit.NewUnitOption("Service", "Group", "0"),
	}

	if interactive {
		opts = append(opts, unit.NewUnitOption("Service", "StandardInput", "tty"))
		opts = append(opts, unit.NewUnitOption("Service", "StandardOutput", "tty"))
		opts = append(opts, unit.NewUnitOption("Service", "StandardError", "tty"))
	} else {
		opts = append(opts, unit.NewUnitOption("Service", "StandardOutput", "journal+console"))
		opts = append(opts, unit.NewUnitOption("Service", "StandardError", "journal+console"))
		opts = append(opts, unit.NewUnitOption("Service", "SyslogIdentifier", filepath.Base(app.Exec[0])))
	}

	// When an app fails, we shut down the pod
	opts = append(opts, unit.NewUnitOption("Unit", "OnFailure", "halt.target"))

	for _, eh := range app.EventHandlers {
		var typ string
		switch eh.Name {
		case "pre-start":
			typ = "ExecStartPre"
		case "post-stop":
			typ = "ExecStopPost"
		default:
			return fmt.Errorf("unrecognized eventHandler: %v", eh.Name)
		}
		exec := quoteExec(append(execWrap, eh.Exec...))
		opts = append(opts, unit.NewUnitOption("Service", typ, exec))
	}

	// Some pre-start jobs take a long time, set the timeout to 0
	opts = append(opts, unit.NewUnitOption("Service", "TimeoutStartSec", "0"))

	var saPorts []types.Port
	for _, p := range app.Ports {
		if p.SocketActivated {
			saPorts = append(saPorts, p)
		}
	}

	for _, i := range app.Isolators {
		switch v := i.Value().(type) {
		case *types.ResourceMemory:
			opts, err = cgroup.MaybeAddIsolator(opts, "memory", v.Limit())
//.........这里部分代码省略.........

开发者ID:BenjaminHerbert，项目名称:rkt，代码行数:101，代码来源:pod.go

注：本文中的github.com/coreos/rkt/stage1/common/types.Pod类示例整理自Github/MSDocs等源码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。