util

package
v0.0.0-...-d1c0873 Latest Latest
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Published: Mar 7, 2022 License: Apache-2.0 Imports: 24 Imported by: 0

Documentation

Index

Constants

View Source
const (
	MEMINFO = "/proc/meminfo"
	PRO_MEM = "/proc/%d/status"
)
View Source
const (
	KB = 1 << (10 * iota)
	MB
	GB
	TB
	PB
	DefaultDataPartitionSize = 120 * GB
	TaskWorkerInterval       = 1
)
View Source
const (
	BlockCount       = 1024
	BlockSize        = 65536 * 2
	ReadBlockSize    = BlockSize
	PerBlockCrcSize  = 4
	ExtentSize       = BlockCount * BlockSize
	PacketHeaderSize = 57
	BlockHeaderSize  = 4096
)
View Source
const (
	ConnectIdleTime = 30
)
View Source
const (
	DefaultSmuxPortShift = 500
)
View Source
const (
	DefaultTinySizeLimit = 1 * MB // TODO explain tiny extent?
)
View Source
const MaxNameLen = 4096

MaxSendfdLen is the maximum length of the name of a file descriptor being sent using SendFd. The name of the file handle returned by RecvFd will never be larger than this value.

Variables

View Source
var (
	ErrNoValidMaster = errors.New("no valid master")
)
View Source
var (
	ErrTooMuchSmuxStreams = errors.New("too much smux streams")
)

Functions

func DailTimeOut

func DailTimeOut(target string, timeout time.Duration) (c *net.TCPConn, err error)

func DefaultSmuxConfig

func DefaultSmuxConfig() *smux.Config

func FilterSmuxAcceptError

func FilterSmuxAcceptError(err error) error

filter smux accept error

func GetMemInfo

func GetMemInfo() (total, used uint64, err error)

GetMemInfo returns the memory information.

func GetProcessMemory

func GetProcessMemory(pid int) (used uint64, err error)

func IsIPV4

func IsIPV4(val interface{}) bool

IsIPV4 returns if it is IPV4 address.

func Max

func Max(a, b int) int

func Min

func Min(a, b int) int

func RandomString

func RandomString(length int, seed RandomSeed) string

func RecvFd

func RecvFd(socket *os.File) (*os.File, error)

RecvFd waits for a file descriptor to be sent over the given AF_UNIX socket. The file name of the remote file descriptor will be recreated locally (it is sent as non-auxiliary data in the same payload).

func SendFd

func SendFd(socket *os.File, name string, fd uintptr) error

SendFd sends a file descriptor over the given AF_UNIX socket. In addition, the file.Name() of the given file will also be sent as non-auxiliary data in the same payload (allowing to send contextual information for a file descriptor).

func SendFds

func SendFds(socket *os.File, msg []byte, fds ...int) error

SendFds sends a list of files descriptor and msg over the given AF_UNIX socket.

func ShiftAddrPort

func ShiftAddrPort(addr string, shift int) (afterShift string)

addr = ip:port afterShift = ip:(port+shift)

func SubString

func SubString(sourceString string, begin, end int) string

func VerifySmuxPoolConfig

func VerifySmuxPoolConfig(cfg *SmuxConnPoolConfig) error

Types

type ConnectPool

type ConnectPool struct {
	sync.RWMutex
	// contains filtered or unexported fields
}

func NewConnectPool

func NewConnectPool() (cp *ConnectPool)

func NewConnectPoolWithTimeout

func NewConnectPoolWithTimeout(idleConnTimeout time.Duration, connectTimeout int64) (cp *ConnectPool)

func (*ConnectPool) Close

func (cp *ConnectPool) Close()

func (*ConnectPool) GetConnect

func (cp *ConnectPool) GetConnect(targetAddr string) (c *net.TCPConn, err error)

func (*ConnectPool) PutConnect

func (cp *ConnectPool) PutConnect(c *net.TCPConn, forceClose bool)

type MasterHelper

type MasterHelper interface {
	AddNode(address string)
	Nodes() []string
	Leader() string
	Request(method, path string, param, header map[string]string, body []byte) (data []byte, err error)
}

MasterHelper defines the helper struct to manage the master.

func NewMasterHelper

func NewMasterHelper() MasterHelper

NewMasterHelper returns a new MasterHelper instance.

type MultipartID

type MultipartID string

func CreateMultipartID

func CreateMultipartID(mpId uint64) MultipartID

func MultipartIDFromString

func MultipartIDFromString(src string) MultipartID

func (MultipartID) PartitionID

func (id MultipartID) PartitionID() (pID uint64, found bool)

func (MultipartID) String

func (id MultipartID) String() string

type Object

type Object struct {
	// contains filtered or unexported fields
}

type Pool

type Pool struct {
	// contains filtered or unexported fields
}

func NewPool

func NewPool(min, max int, timeout, connectTimeout int64, target string) (p *Pool)

func (*Pool) GetConnectFromPool

func (p *Pool) GetConnectFromPool() (c *net.TCPConn, err error)

func (*Pool) NewConnect

func (p *Pool) NewConnect(target string) (c *net.TCPConn, err error)

func (*Pool) PutConnectObjectToPool

func (p *Pool) PutConnectObjectToPool(o *Object)

func (*Pool) ReleaseAll

func (p *Pool) ReleaseAll()

type RandomSeed

type RandomSeed byte
const (
	Numeric RandomSeed = 1 << iota
	LowerLetter
	UpperLetter
)

func (RandomSeed) Runes

func (s RandomSeed) Runes() []rune

type SmuxConnPoolConfig

type SmuxConnPoolConfig struct {
	*smux.Config
	TotalStreams      int
	StreamsPerConn    int
	ConnsPerAddr      int
	PoolCapacity      int
	DialTimeout       time.Duration
	StreamIdleTimeout int64
}

func DefaultSmuxConnPoolConfig

func DefaultSmuxConnPoolConfig() *SmuxConnPoolConfig

type SmuxConnPoolStat

type SmuxConnPoolStat struct {
	TotalStreams         int                      `json:"totalStreams"`
	TotalStreamsReported int                      `json:"totalStreamsInflight"`
	Pools                map[string]*SmuxPoolStat `json:"pools"`
	TotalSessions        int                      `json:"totalSessions"`
}

type SmuxConnectPool

type SmuxConnectPool struct {
	sync.RWMutex
	// contains filtered or unexported fields
}

func NewSmuxConnectPool

func NewSmuxConnectPool(cfg *SmuxConnPoolConfig) (cp *SmuxConnectPool)

func (*SmuxConnectPool) Close

func (cp *SmuxConnectPool) Close()

func (*SmuxConnectPool) GetConnect

func (cp *SmuxConnectPool) GetConnect(targetAddr string) (c *smux.Stream, err error)

func (*SmuxConnectPool) GetStat

func (cp *SmuxConnectPool) GetStat() *SmuxConnPoolStat

func (*SmuxConnectPool) PutConnect

func (cp *SmuxConnectPool) PutConnect(stream *smux.Stream, forceClose bool)

type SmuxPool

type SmuxPool struct {
	// contains filtered or unexported fields
}

func NewSmuxPool

func NewSmuxPool(cfg *SmuxConnPoolConfig, target string, streamBucket *simpleTokenBucket) (p *SmuxPool)

func (*SmuxPool) GetConnect

func (p *SmuxPool) GetConnect() (*smux.Stream, error)

func (*SmuxPool) GetStat

func (p *SmuxPool) GetStat() *SmuxPoolStat

func (*SmuxPool) MarkClosed

func (p *SmuxPool) MarkClosed(s *smux.Stream)

func (*SmuxPool) NewStream

func (p *SmuxPool) NewStream() (stream *smux.Stream, err error)

func (*SmuxPool) PutStreamObjectToPool

func (p *SmuxPool) PutStreamObjectToPool(obj *streamObject)

func (*SmuxPool) ReleaseAll

func (p *SmuxPool) ReleaseAll()

type SmuxPoolStat

type SmuxPoolStat struct {
	Addr                    string         `json:"addr"`
	InflightStreams         int            `json:"inflightStreams"`
	InflightStreamsReported int            `json:"inflightStreamReported"`
	TotalSessions           int            `json:"totalSessions"`
	StreamsPerSession       map[string]int `json:"streamsPerSession"`
}

Directories

Path Synopsis
Package btree implements in-memory B-Trees of arbitrary degree.
Package btree implements in-memory B-Trees of arbitrary degree.

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