daemon

package
v0.13.13 Latest Latest
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 Go to latest Published: May 15, 2024 License: Apache-2.0 Imports: 31 Imported by: 4

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Constants

View Source 
const (
	APISocketFileName   = "api.sock"
	SharedNydusDaemonID = "shared_daemon"
)

Variables

This section is empty.

Functions

func WaitUntilSocketExisted added in v0.4.0 

func WaitUntilSocketExisted(sock string, pid int) error

Types

type ConfigState added in v0.12.0 

type ConfigState struct {
	// A unique ID generated by daemon manager to identify the nydusd instance.
	ID              string
	ProcessID       int
	APISocket       string
	DaemonMode      config.DaemonMode
	FsDriver        string
	LogDir          string
	LogLevel        string
	LogRotationSize int
	LogToStdout     bool
	Mountpoint      string
	SupervisorPath  string
	ThreadNum       int
	// Where the configuration file resides, all rafs instances share the same configuration template
	ConfigDir string
}

Fields in this structure should be write-once, and caller should hold `Daemon.mu` when updating fields.

type Daemon 

type Daemon struct {
	States ConfigState

	// Host all RAFS filesystems managed by this daemon:
	// fusedev dedicated mode: one and only one RAFS instance
	// fusedev shared mode: zero, one or more RAFS instances
	// fscache shared mode: zero, one or more RAFS instances
	RafsCache rafs.Cache

	// Nil means this daemon object has no supervisor
	Supervisor *supervisor.Supervisor
	Config     daemonconfig.DaemonConfig

	// How much CPU nydusd is utilizing when starts since full prefetch might
	// consume many CPU cycles
	StartupCPUUtilization float64
	Version               types.BuildTimeInfo
	// contains filtered or unexported fields
}

TODO: Record queried nydusd state

func NewDaemon 

func NewDaemon(opt ...NewDaemonOpt) (*Daemon, error)

Instantiate a daemon object

func (*Daemon) AddRafsInstance added in v0.12.0 

func (d *Daemon) AddRafsInstance(r *rafs.Rafs)

func (*Daemon) ClearVestige added in v0.3.0 

func (d *Daemon) ClearVestige()

When daemon dies, clean up its vestige before start a new one.

func (*Daemon) CloneRafsInstances added in v0.12.0 

func (d *Daemon) CloneRafsInstances(src *Daemon)

func (*Daemon) ConfigFile 

func (d *Daemon) ConfigFile(instanceID string) string

Each nydusd daemon has a copy of configuration json file.

func (*Daemon) DecRef added in v0.4.0 

func (d *Daemon) DecRef() int32

func (*Daemon) Exit added in v0.4.0 

func (d *Daemon) Exit() error

func (*Daemon) GetAPISock added in v0.2.1 

func (d *Daemon) GetAPISock() string

func (*Daemon) GetCacheMetrics added in v0.4.0 

func (d *Daemon) GetCacheMetrics(sid string) (*types.CacheMetrics, error)

func (*Daemon) GetClient added in v0.4.0 

func (d *Daemon) GetClient() (NydusdClient, error)

func (*Daemon) GetDaemonInfo added in v0.5.0 

func (d *Daemon) GetDaemonInfo() (*types.DaemonInfo, error)

func (*Daemon) GetFsMetrics added in v0.4.0 

func (d *Daemon) GetFsMetrics(sid string) (*types.FsMetrics, error)

func (*Daemon) GetInflightMetrics added in v0.6.0 

func (d *Daemon) GetInflightMetrics() (*types.InflightMetrics, error)

func (*Daemon) GetRef added in v0.4.0 

func (d *Daemon) GetRef() int32

func (*Daemon) GetState added in v0.4.0 

func (d *Daemon) GetState() (types.DaemonState, error)

Get and cache daemon current working state by querying nydusd: 1. INIT 2. READY: All needed resources are ready. 3. RUNNING

func (*Daemon) HostMountpoint added in v0.4.0 

func (d *Daemon) HostMountpoint() (mnt string)

func (*Daemon) ID 

func (d *Daemon) ID() string

func (*Daemon) IncRef added in v0.4.0 

func (d *Daemon) IncRef()

func (*Daemon) IsSharedDaemon 

func (d *Daemon) IsSharedDaemon() bool

func (*Daemon) Lock added in v0.3.0 

func (d *Daemon) Lock()

func (*Daemon) LogFile 

func (d *Daemon) LogFile() string

func (*Daemon) NydusdThreadNum 

func (d *Daemon) NydusdThreadNum() int

NydusdThreadNum returns how many working threads are needed of a single nydusd

func (*Daemon) Pid 

func (d *Daemon) Pid() int

func (*Daemon) RecoverRafsInstances added in v0.12.0 

func (d *Daemon) RecoverRafsInstances() error

Daemon must be started and reach RUNNING state before call this method

func (*Daemon) RemoveRafsInstance added in v0.12.0 

func (d *Daemon) RemoveRafsInstance(snapshotID string)

func (*Daemon) ResetClient added in v0.3.0 

func (d *Daemon) ResetClient()

func (*Daemon) ResetState added in v0.8.0 

func (d *Daemon) ResetState()

Reset the cached nydusd working status

func (*Daemon) SendStates added in v0.4.0 

func (d *Daemon) SendStates()

func (*Daemon) SharedMount 

func (d *Daemon) SharedMount(rafs *rafs.Rafs) error

func (*Daemon) SharedUmount 

func (d *Daemon) SharedUmount(rafs *rafs.Rafs) error

func (*Daemon) Start added in v0.4.0 

func (d *Daemon) Start() error

func (*Daemon) State added in v0.4.0 

func (d *Daemon) State() types.DaemonState

Return the cached nydusd working status, no API is invoked.

func (*Daemon) TakeOver added in v0.4.0 

func (d *Daemon) TakeOver() error

func (*Daemon) Terminate added in v0.3.0 

func (d *Daemon) Terminate() error

func (*Daemon) UmountRafsInstance added in v0.12.0 

func (d *Daemon) UmountRafsInstance(r *rafs.Rafs) error

func (*Daemon) UmountRafsInstances added in v0.12.0 

func (d *Daemon) UmountRafsInstances() error

func (*Daemon) Unlock added in v0.3.0 

func (d *Daemon) Unlock()

func (*Daemon) Wait added in v0.3.0 

func (d *Daemon) Wait() error

func (*Daemon) WaitUntilState added in v0.4.0 

func (d *Daemon) WaitUntilState(expected types.DaemonState) error

Wait for the nydusd daemon to reach specified state with timeout.

type NewDaemonOpt 

type NewDaemonOpt func(d *Daemon) error

func WithConfigDir 

func WithConfigDir(dir string) NewDaemonOpt

func WithDaemonMode added in v0.9.0 

func WithDaemonMode(daemonMode config.DaemonMode) NewDaemonOpt

func WithFsDriver added in v0.3.0 

func WithFsDriver(fsDriver string) NewDaemonOpt

func WithLogDir 

func WithLogDir(dir string) NewDaemonOpt

func WithLogLevel 

func WithLogLevel(logLevel string) NewDaemonOpt

func WithLogRotationSize added in v0.10.0 

func WithLogRotationSize(logRotationSize int) NewDaemonOpt

func WithLogToStdout 

func WithLogToStdout(logToStdout bool) NewDaemonOpt

func WithMountpoint added in v0.4.0 

func WithMountpoint(mountpoint string) NewDaemonOpt

func WithNydusdThreadNum 

func WithNydusdThreadNum(nydusdThreadNum int) NewDaemonOpt

func WithRef added in v0.4.0 

func WithRef(ref int32) NewDaemonOpt

func WithSocketDir 

func WithSocketDir(dir string) NewDaemonOpt

Build runtime nydusd daemon object, which might be persisted later

type NydusdClient added in v0.4.0 

type NydusdClient interface {
	GetDaemonInfo() (*types.DaemonInfo, error)

	Mount(mountpoint, bootstrap, daemonConfig string) error
	Umount(mountpoint string) error

	BindBlob(daemonConfig string) error
	UnbindBlob(domainID, blobID string) error

	GetFsMetrics(sid string) (*types.FsMetrics, error)
	GetInflightMetrics() (*types.InflightMetrics, error)
	GetCacheMetrics(sid string) (*types.CacheMetrics, error)

	TakeOver() error
	SendFd() error
	Start() error
	Exit() error
}

Nydusd HTTP client to query nydusd runtime status, operate file system instances. Control nydusd workflow like failover and upgrade.

func NewNydusClient added in v0.4.0 

func NewNydusClient(sock string) (NydusdClient, error)

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