config

Documentation

Index

• Constants
• Variables
• func NewDefaultPlugins() map[plugins.PluginType][]*plugins.PluginProperties
• type BaseProperties
  • func NewDefaultBaseProperties() *BaseProperties
• type Config
  • func New() *Config
  • func (c *Config) String() string
• type KeepAliveConfig
• type ManagerConfig

Constants

const (
	// DefaultListenPort is the default port cdn server listens on.
	DefaultListenPort = 8003
	// DefaultDownloadPort is the default port for download files from cdn.
	DefaultDownloadPort = 8001
)

const (
	// DefaultPieceSize 4M
	DefaultPieceSize = 4 * 1024 * 1024

	// DefaultPieceSizeLimit 15M
	DefaultPieceSizeLimit = 15 * 1024 * 1024
)

const (
	// DefaultGCInitialDelay is the delay time from the start to the first GC execution.
	DefaultGCInitialDelay = 6 * time.Second

	// DefaultGCMetaInterval is the interval time to execute the GC meta.
	DefaultGCMetaInterval = 2 * time.Minute

	// DefaultTaskExpireTime when a task is not accessed within the taskExpireTime,
	// and it will be treated to be expired.
	DefaultTaskExpireTime = 3 * time.Minute
)

gc

const (
	// DefaultSystemReservedBandwidth is the default network bandwidth reserved for system software.
	// unit: MB/s
	DefaultSystemReservedBandwidth = 20 * unit.MB
	// DefaultMaxBandwidth is the default network bandwidth that cdn can use.
	// unit: MB/s
	DefaultMaxBandwidth = 1 * unit.GB
)

const (
	DefaultKeepAliveInterval                 = 5 * time.Second
	DefaultKeepAliveRetryMaxAttempts         = 100000000
	DefaultKeepAliveRetryInitBackOff float64 = 5
	DefaultKeepAliveRetryMaxBackOff  float64 = 10
)

const (
	CDNWriterRoutineLimit = 4
)

const (
	// DefaultFailAccessInterval is the interval time after failed to access the URL.
	DefaultFailAccessInterval = 3 * time.Minute
)

const (
	DefaultStorageMode = "disk"
)

Variables

var (
	DefaultDiskBaseDir = filepath.Join(basic.HomeDir, "ftp")

	DefaultMemoryBaseDir = "/dev/shm/dragonfly"
)

Functions

func NewDefaultPlugins

func NewDefaultPlugins() map[plugins.PluginType][]*plugins.PluginProperties

NewDefaultPlugins creates plugin instants with default values.

Types

type BaseProperties

type BaseProperties struct {
	// ListenPort is the port cdn server listens on.
	// default: 8002
	ListenPort int `yaml:"listenPort" mapstructure:"listenPort"`

	// DownloadPort is the port for download files from cdn.
	// default: 8001
	DownloadPort int `yaml:"downloadPort" mapstructure:"downloadPort"`

	// SystemReservedBandwidth is the network bandwidth reserved for system software.
	// default: 20 MB, in format of G(B)/g/M(B)/m/K(B)/k/B, pure number will also be parsed as Byte.
	SystemReservedBandwidth unit.Bytes `yaml:"systemReservedBandwidth" mapstructure:"systemReservedBandwidth"`

	// MaxBandwidth is the network bandwidth that cdn system can use.
	// default: 200 MB, in format of G(B)/g/M(B)/m/K(B)/k/B, pure number will also be parsed as Byte.
	MaxBandwidth unit.Bytes `yaml:"maxBandwidth" mapstructure:"maxBandwidth"`

	// AdvertiseIP is used to set the ip that we advertise to other peer in the p2p-network.
	// By default, the first non-loop address is advertised.
	AdvertiseIP string `yaml:"advertiseIP" mapstructure:"advertiseIP"`

	// FailAccessInterval is the interval time after failed to access the URL.
	// unit: minutes
	// default: 3
	FailAccessInterval time.Duration `yaml:"failAccessInterval" mapstructure:"failAccessInterval"`

	// gc related
	// GCInitialDelay is the delay time from the start to the first GC execution.
	// default: 6s
	GCInitialDelay time.Duration `yaml:"gcInitialDelay" mapstructure:"gcInitialDelay"`

	// GCMetaInterval is the interval time to execute GC meta.
	// default: 2min
	GCMetaInterval time.Duration `yaml:"gcMetaInterval" mapstructure:"gcMetaInterval"`

	// TaskExpireTime when a task is not accessed within the taskExpireTime,
	// and it will be treated to be expired.
	// default: 3min
	TaskExpireTime time.Duration `yaml:"taskExpireTime" mapstructure:"taskExpireTime"`

	// StorageMode disk/hybrid/memory
	StorageMode string `yaml:"storageMode" mapstructure:"storageMode"`

	// Manager configuration
	Manager ManagerConfig `yaml:"manager" mapstructure:"manager"`
}

BaseProperties contains all basic properties of cdn system.

func NewDefaultBaseProperties

func NewDefaultBaseProperties() *BaseProperties

NewDefaultBaseProperties creates an base properties instant with default values.

type Config

type Config struct {
	base.Options    `yaml:",inline" mapstructure:",squash"`
	*BaseProperties `yaml:"base" mapstructure:"base"`

	Plugins map[plugins.PluginType][]*plugins.PluginProperties `yaml:"plugins" mapstructure:"plugins"`
}

Config contains all configuration of cdn node.

func New

func New() *Config

New creates an instant with default values.

func (*Config) String

func (c *Config) String() string

type KeepAliveConfig

type KeepAliveConfig struct {
	// Keep alive interval
	Interval time.Duration `yaml:"interval" mapstructure:"interval"`

	// Keep alive retry max attempts
	RetryMaxAttempts int `yaml:"retryMaxAttempts" mapstructure:"retryMaxAttempts"`

	// Keep alive retry init backoff
	RetryInitBackOff float64 `yaml:"retryInitBackOff" mapstructure:"retryInitBackOff"`

	// Keep alive retry max backoff
	RetryMaxBackOff float64 `yaml:"retryMaxBackOff" mapstructure:"retryMaxBackOff"`
}

type ManagerConfig

type ManagerConfig struct {
	// NetAddr is manager address.
	Addr string `yaml:"addr" mapstructure:"addr"`

	// CDNClusterID is cdn cluster id.
	CDNClusterID uint64 `yaml:"cdnClusterID" mapstructure:"cdnClusterID"`

	// KeepAlive configuration
	KeepAlive KeepAliveConfig `yaml:"keepAlive" mapstructure:"keepAlive"`
}