renter

package
v1.3.5 Latest Latest
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 Go to latest Published: Oct 16, 2018 License: MIT Imports: 29 Imported by: 0

Documentation

Overview

Package renter is responsible for uploading and downloading files on the sia network.

Index

Constants

View Source 
const (

	// DefaultStreamCacheSize is the default cache size of the /renter/stream cache in
	// chunks, the user can set a custom cache size through the API
	DefaultStreamCacheSize = 2

	// DefaultMaxDownloadSpeed is set to zero to indicate no limit, the user
	// can set a custom MaxDownloadSpeed through the API
	DefaultMaxDownloadSpeed = 0

	// DefaultMaxUploadSpeed is set to zero to indicate no limit, the user
	// can set a custom MaxUploadSpeed through the API
	DefaultMaxUploadSpeed = 0

	// PriceEstimationSafetyFactor is the factor of safety used in the price
	// estimation to account for any missed costs
	PriceEstimationSafetyFactor = 1.33
)
View Source 
const (

	// PersistFilename is the filename to be used when persisting renter information to a JSON file
	PersistFilename = "renter.json"
	// ShareExtension is the extension to be used
	ShareExtension = ".sia"
)

Variables

View Source 
var (
	// ErrEmptyFilename is an error when filename is empty
	ErrEmptyFilename = errors.New("filename must be a nonempty string")
	// ErrPathOverload is an error when a file already exists at that location
	ErrPathOverload = errors.New("a file already exists at that location")
	// ErrUnknownPath is an error when a file cannot be found with the given path
	ErrUnknownPath = errors.New("no file known with that path")
)
View Source 
var (
	//ErrBadFile is an error when a file does not qualify as .sia file
	ErrBadFile = errors.New("not a .sia file")
	// ErrIncompatible is an error when file is not compatible with current version
	ErrIncompatible = errors.New("file is not compatible with current version")
	// ErrNoNicknames is an error when no nickname is given
	ErrNoNicknames = errors.New("at least one nickname must be supplied")
	// ErrNonShareSuffix is an error when the suffix of a file does not match the defined share extension
	ErrNonShareSuffix = errors.New("suffix of file must be " + ShareExtension)
)
View Source 
var (

	// RemoteRepairDownloadThreshold defines the threshold in percent under
	// which the renter starts repairing a file that is not available on disk.
	RemoteRepairDownloadThreshold = build.Select(build.Var{
		Dev:      0.25,
		Standard: 0.25,
		Testing:  0.25,
	}).(float64)
)

Functions

func NewDownloadDestinationBuffer added in v1.3.3 

func NewDownloadDestinationBuffer(length uint64) downloadDestinationBuffer

NewDownloadDestinationBuffer allocates the necessary number of shards for the downloadDestinationBuffer and returns the new buffer.

func NewRSCode added in v1.0.0 

func NewRSCode(nData, nParity int) (modules.ErasureCoder, error)

NewRSCode creates a new Reed-Solomon encoder/decoder using the supplied parameters.

Types

type Renter 

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

A Renter is responsible for tracking all of the files that a user has uploaded to Sia, as well as the locations and health of these files.

TODO: Separate the workerPool to have its own mutex. The workerPool doesn't interfere with any of the other fields in the renter, should be fine for it to have a separate mutex, that way operations on the worker pool don't block operations on other parts of the struct. If we're going to do it that way, might make sense to split the worker pool off into it's own struct entirely the same way that we split of the memoryManager entirely.

func New 

func New(g modules.Gateway, cs modules.ConsensusSet, wallet modules.Wallet, tpool modules.TransactionPool, persistDir string) (*Renter, error)

New returns an initialized renter.

func NewCustomRenter added in v1.3.3 

func NewCustomRenter(g modules.Gateway, cs modules.ConsensusSet, tpool modules.TransactionPool, hdb hostDB, hc hostContractor, persistDir string, deps modules.Dependencies) (*Renter, error)

NewCustomRenter initializes a renter and returns it.

func (*Renter) ActiveHosts added in v1.0.0 

func (r *Renter) ActiveHosts() []modules.HostDBEntry

ActiveHosts returns an array of hostDB's active hosts

func (*Renter) AllHosts added in v1.0.0 

func (r *Renter) AllHosts() []modules.HostDBEntry

AllHosts returns an array of all hosts

func (*Renter) CancelContract added in v1.3.4 

func (r *Renter) CancelContract(id types.FileContractID) error

CancelContract cancels a renter's contract by ID by setting goodForRenew and goodForUpload to false

func (*Renter) ClearDownloadHistory added in v1.3.4 

func (r *Renter) ClearDownloadHistory(after, before time.Time) error

ClearDownloadHistory clears the renter's download history inclusive of the provided before and after timestamps

TODO: This function can be improved by implementing a binary search, the trick will be making the binary search be just as readable while handling all the edge cases

func (*Renter) Close added in v1.0.0 

func (r *Renter) Close() error

Close closes the Renter and its dependencies

func (*Renter) ContractUtility added in v1.3.2 

func (r *Renter) ContractUtility(pk types.SiaPublicKey) (modules.ContractUtility, bool)

ContractUtility returns the utility field for a given contract, along with a bool indicating if it exists.

func (*Renter) Contracts added in v1.0.0 

func (r *Renter) Contracts() []modules.RenterContract

Contracts returns an array of host contractor's staticContracts

func (*Renter) CurrentPeriod added in v1.1.0 

func (r *Renter) CurrentPeriod() types.BlockHeight

CurrentPeriod returns the host contractor's current period

func (*Renter) DeleteFile added in v0.3.1 

func (r *Renter) DeleteFile(nickname string) error

DeleteFile removes a file entry from the renter and deletes its data from the hosts it is stored on.

TODO: The data is not cleared from any contracts where the host is not immediately online.

func (*Renter) Download 

func (r *Renter) Download(p modules.RenterDownloadParameters) error

Download performs a file download using the passed parameters and blocks until the download is finished.

func (*Renter) DownloadAsync added in v1.3.3 

func (r *Renter) DownloadAsync(p modules.RenterDownloadParameters) error

DownloadAsync performs a file download using the passed parameters without blocking until the download is finished.

func (*Renter) DownloadHistory added in v1.3.2 

func (r *Renter) DownloadHistory() []modules.DownloadInfo

DownloadHistory returns the list of downloads that have been performed. Will include downloads that have not yet completed. Downloads will be roughly, but not precisely, sorted according to start time.

TODO: Currently the DownloadHistory only contains downloads from this session, does not contain downloads that were executed for the purposes of repairing, and has no way to clear the download history if it gets long or unwieldy. It's not entirely certain which of the missing features are actually desirable, please consult core team + app dev community before deciding what to implement.

func (*Renter) EstimateHostScore added in v1.3.0 

func (r *Renter) EstimateHostScore(e modules.HostDBEntry, a modules.Allowance) modules.HostScoreBreakdown

EstimateHostScore returns the estimated host score

func (*Renter) File added in v1.3.3 

func (r *Renter) File(siaPath string) (modules.FileInfo, error)

File returns file from siaPath queried by user. Update based on FileList

func (*Renter) FileList 

func (r *Renter) FileList() []modules.FileInfo

FileList returns all of the files that the renter has.

func (*Renter) Host added in v1.1.1 

func (r *Renter) Host(spk types.SiaPublicKey) (modules.HostDBEntry, bool)

Host returns the host associated with the given public key

func (*Renter) InitialScanComplete added in v1.3.3 

func (r *Renter) InitialScanComplete() (bool, error)

InitialScanComplete returns a boolean indicating if the initial scan of the hostdb is completed.

func (*Renter) LoadSharedFiles added in v1.0.0 

func (r *Renter) LoadSharedFiles(filename string) ([]string, error)

LoadSharedFiles loads a .sia file into the renter. It returns the nicknames of the loaded files.

func (*Renter) LoadSharedFilesASCII added in v1.3.2 

func (r *Renter) LoadSharedFilesASCII(asciiSia string) ([]string, error)

LoadSharedFilesASCII loads an ASCII-encoded .sia file into the renter. It returns the nicknames of the loaded files.

func (*Renter) OldContracts added in v1.3.4 

func (r *Renter) OldContracts() []modules.RenterContract

OldContracts returns an array of host contractor's oldContracts

func (*Renter) PeriodSpending added in v1.3.1 

func (r *Renter) PeriodSpending() modules.ContractorSpending

PeriodSpending returns the host contractor's period spending

func (*Renter) PriceEstimation added in v1.1.1 

func (r *Renter) PriceEstimation(allowance modules.Allowance) (modules.RenterPriceEstimation, modules.Allowance, error)

PriceEstimation estimates the cost in siacoins of performing various storage and data operations. The estimation will be done using the provided allowance, if an empty allowance is provided then the renter's current allowance will be used if one is set. The final allowance used will be returned.

func (*Renter) ProcessConsensusChange added in v1.3.1 

func (r *Renter) ProcessConsensusChange(cc modules.ConsensusChange)

ProcessConsensusChange returns the process consensus change

func (*Renter) RenameFile added in v0.3.1 

func (r *Renter) RenameFile(currentName, newName string) error

RenameFile takes an existing file and changes the nickname. The original file must exist, and there must not be any file that already has the replacement nickname.

func (*Renter) ScoreBreakdown added in v1.1.1 

func (r *Renter) ScoreBreakdown(e modules.HostDBEntry) modules.HostScoreBreakdown

ScoreBreakdown returns the score breakdown

func (*Renter) SetFileTrackingPath added in v1.3.5 

func (r *Renter) SetFileTrackingPath(siaPath, newPath string) error

SetFileTrackingPath sets the on-disk location of an uploaded file to a new value. Useful if files need to be moved on disk. SetFileTrackingPath will check that a file exists at the new location and it ensures that it has the right size, but it can't check that the content is the same. Therefore the caller is responsible for not accidentally corrupting the uploaded file by providing a different file with the same size.

func (*Renter) SetSettings added in v1.0.0 

func (r *Renter) SetSettings(s modules.RenterSettings) error

SetSettings will update the settings for the renter.

NOTE: This function can't be atomic. Typically we try to have user requests be atomic, so that either everything changes or nothing changes, but since these changes happen progressively, it's possible for some of the settings (like the allowance) to succeed, but then if the bandwidth limits for example are bad, then the allowance will update but the bandwidth will not update.

func (*Renter) Settings added in v1.0.0 

func (r *Renter) Settings() modules.RenterSettings

Settings returns the host contractor's allowance

func (*Renter) ShareFiles added in v0.3.1 

func (r *Renter) ShareFiles(nicknames []string, shareDest string) error

ShareFiles saves the specified files to shareDest.

func (*Renter) ShareFilesASCII added in v1.3.2 

func (r *Renter) ShareFilesASCII(nicknames []string) (string, error)

ShareFilesASCII returns the specified files in ASCII format.

func (*Renter) Streamer added in v1.3.3 

func (r *Renter) Streamer(siaPath string) (string, io.ReadSeeker, error)

Streamer creates an io.ReadSeeker that can be used to stream downloads from the sia network.

func (*Renter) Upload 

func (r *Renter) Upload(up modules.FileUploadParams) error

Upload instructs the renter to start tracking a file. The renter will automatically upload and repair tracked files using a background loop.

Source Files

View all Source files

Directories

Path Synopsis
Package contractor is responsible for forming and renewing file contracts with hosts.
 Package contractor is responsible for forming and renewing file contracts with hosts.
Package hostdb provides a HostDB object that implements the renter.hostDB interface.
 Package hostdb provides a HostDB object that implements the renter.hostDB interface.
hosttree

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