storage

package
v1.0.1 Latest Latest
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 Go to latest Published: Mar 1, 2020 License: Apache-2.0 Imports: 25 Imported by: 12

Documentation

Index

Constants

View Source 
const (
	// Client Handle Message Set
	HostConfigRespMsg            = 0x20
	ContractCreateHostSign       = 0x21
	ContractCreateRevisionSign   = 0x22
	ContractUploadMerkleProofMsg = 0x23
	ContractUploadRevisionSign   = 0x24
	ContractDownloadDataMsg      = 0x25
	HostBusyHandleReqMsg         = 0x26
	HostCommitFailedMsg          = 0x27
	HostAckMsg                   = 0x28
	HostNegotiateErrorMsg        = 0x29

	// Host Handle Message Set
	HostConfigReqMsg                 = 0x30
	ContractCreateReqMsg             = 0x31
	ContractCreateClientRevisionSign = 0x32
	ContractUploadReqMsg             = 0x33
	ContractUploadClientRevisionSign = 0x34
	ContractDownloadReqMsg           = 0x35
	ClientCommitSuccessMsg           = 0x36
	ClientCommitFailedMsg            = 0x37
	ClientAckMsg                     = 0x38
	ClientNegotiateErrorMsg          = 0x39
)

Negotiation related messages

View Source 
const (
	// OpInsertFile is the operation name for an InsertUpdate
	OpInsertFile = "insert_file"

	// OpDeleteFile is the operation name for an DeleteUpdate
	OpDeleteFile = "delete_file"
)
View Source 
const (
	Override = iota
	Append
	Normal
)

Defines the download mode

View Source 
const (
	// EnvProd marks the production execution environment
	EnvProd = "prod"

	// EnvTest marks the test execution environment
	EnvTest = "test"

	// DxFileExt is the extension of DxFile
	DxFileExt = ".dxfile"

	// ConfigVersion is the version of host config
	ConfigVersion = "1.0.1"
)
View Source 
const (
	// SectorSize is 4 MB
	SectorSize = uint64(1 << 22)

	// HashSize is 32 bits
	HashSize = 32

	// SegmentSize is the segment size is used when taking the Merkle root of a file.
	SegmentSize = 64
)
View Source 
const (
	// ProofWindowSize is the window for storage host to submit a storage proof
	ProofWindowSize = 12 * unit.BlocksPerHour
)
View Source 
const (
	// RenewWindow is the window for storage contract renew for storage client
	RenewWindow = 12 * unit.BlocksPerHour
)
View Source 
const (
	UploadActionAppend = "Append"
)

Defines upload mode

Variables

View Source 
var (
	// ErrHostBusyHandleReq defines that client sent the contract request too frequently. If this error is occurred
	// the host's evaluation will not be deducted
	ErrHostBusyHandleReq = errors.New("client must wait until the host finish its's previous request")

	// ErrClientNegotiate defines that client occurs error while negotiate
	ErrClientNegotiate = errors.New("client negotiate error")

	// ErrClientCommit defines that client occurs error while commit(finalize)
	ErrClientCommit = errors.New("client commit error")

	// ErrHostNegotiate defines that client occurs error while negotiate
	ErrHostNegotiate = errors.New("host negotiate error")

	// ErrHostCommit defines that host occurs error while commit(finalize)
	ErrHostCommit = errors.New("host commit error")
)
View Source 
var (
	// persistence default value
	DefaultMaxDuration          = unit.BlocksPerDay * 30 // 30 days
	DefaultMaxDownloadBatchSize = 17 * (1 << 20)         // 17 MB
	DefaultMaxReviseBatchSize   = 17 * (1 << 20)         // 17 MB

	// deposit defaults value
	DefaultDeposit       = common.PtrBigInt(math.BigPow(10, 3))  // 173 dx per TB per month
	DefaultDepositBudget = common.PtrBigInt(math.BigPow(10, 22)) // 10000 DX
	DefaultMaxDeposit    = common.PtrBigInt(math.BigPow(10, 20)) // 100 DX

	// prices
	// TODO: remove these two fields when the two prices are removed from negotiation
	DefaultBaseRPCPrice      = common.PtrBigInt(math.BigPow(10, 11))
	DefaultSectorAccessPrice = common.PtrBigInt(math.BigPow(10, 13))

	DefaultStoragePrice           = common.PtrBigInt(math.BigPow(10, 4)).MultInt64(5)
	DefaultUploadBandwidthPrice   = common.PtrBigInt(math.BigPow(10, 8)).MultInt64(5)
	DefaultDownloadBandwidthPrice = common.PtrBigInt(math.BigPow(10, 9)).MultInt64(5)
	DefaultContractPrice          = common.NewBigInt(1e2)
)

Default host settings

View Source 
var (
	// ErrAlreadyRoot is the error happens when calling Parent function on
	// a root directory
	ErrAlreadyRoot = errors.New("cannot call the Parent function on the root directory")

	// ErrEmptyDxPath is the error happens when calling NewDxPath on an empty string
	ErrEmptyDxPath = errors.New("cannot create an empty DxPath")
)
View Source 
var (
	// ENV define the program running environment: test, prod
	ENV = EnvProd

	// DefaultMinSectors define the default minimum sectors needed to recovery
	DefaultMinSectors uint32 = 1

	// DefaultNumSectors define the default total sectors needed to recovery
	DefaultNumSectors uint32 = 2
)
View Source 
var (
	DefaultRentPayment = RentPayment{
		Fund:         common.PtrBigInt(new(big.Int).Exp(big.NewInt(10), big.NewInt(18), nil)).MultInt64(1e4),
		StorageHosts: 3,
		Period:       3 * unit.BlocksPerDay,

		ExpectedStorage:    1e12,
		ExpectedUpload:     uint64(200e9) / unit.BlocksPerMonth,
		ExpectedDownload:   uint64(100e9) / unit.BlocksPerMonth,
		ExpectedRedundancy: 2.0,
	}
)

Default rentPayment values

View Source 
var ErrRequestingHostConfig = errors.New("host configuration should only be requested one at a time")

ErrRequestingHostConfig is the error code used when the client asks host for its configuration multiple times before the host finished handling the previous configuration request. Therefore, the host's evaluation should not be deducted.

View Source 
var (
	ResponsibilityLockTimeout = 60 * time.Second
)

The block generation rate for Ethereum is 15s/block. Therefore, 240 blocks can be generated in an hour

Functions

func ApplyOperations 

func ApplyOperations(ops []writeaheadlog.Operation) error

ApplyOperations apply the operations

func ApplyUpdates 

func ApplyUpdates(wal *writeaheadlog.Wal, updates []FileUpdate) error

ApplyUpdates apply the updates on the wal

func FilterAPIs 

func FilterAPIs(apis []rpc.API, parseAPI *ParsedAPI) error

FilterAPIs will filter the APIs saved in the Ethereum and save them into ParsedAPI data structure

Types

type AccountManager 

type AccountManager interface {
	Find(accounts.Account) (accounts.Wallet, error)
	Wallets() []accounts.Wallet
}

AccountManager is the interface for account.Manager to be used in storage host module

type ClientBackend 

type ClientBackend interface {
	Online() bool
	Syncing() bool
	GetStorageHostSetting(hostEnodeID enode.ID, hostEnodeURL string, config *HostExtConfig) error
	SubscribeChainChangeEvent(ch chan<- core.ChainChangeEvent) event.Subscription
	GetTxByBlockHash(blockHash common.Hash) (types.Transactions, error)
	SetupConnection(enodeURL string) (Peer, error)
	AccountManager() *accounts.Manager
	ChainConfig() *params.ChainConfig
	CurrentBlock() *types.Block
	SendTx(ctx context.Context, signedTx *types.Transaction) error
	SuggestPrice(ctx context.Context) (*big.Int, error)
	GetPoolNonce(ctx context.Context, addr common.Address) (uint64, error)
	SendStorageContractCreateTx(clientAddr common.Address, input []byte) (common.Hash, error)
	GetHostAnnouncementWithBlockHash(blockHash common.Hash) (hostAnnouncements []types.HostAnnouncement, number uint64, errGet error)
	GetPaymentAddress() (common.Address, error)
	TryToRenewOrRevise(hostID enode.ID) bool
	RevisionOrRenewingDone(hostID enode.ID)
	CheckAndUpdateConnection(peerNode *enode.Node)
	SelfEnodeURL() string
}

ClientBackend is an interface that used to provide necessary functions to storage host manager and contract manager

type ClientSetting 

type ClientSetting struct {
	RentPayment       RentPayment `json:"rentPayment"`
	EnableIPViolation bool        `json:"enableIPViolation"`
	MaxUploadSpeed    int64       `json:"maxUploadSpeed"`
	MaxDownloadSpeed  int64       `json:"maxDownloadSpeed"`
}

ClientSetting defines the settings that client used to create contract with other peers, where EnableIPViolation specifies if the host with same network IP addresses will be filtered out or not

type ClientSettingAPIDisplay 

type ClientSettingAPIDisplay struct {
	RentPayment       RentPaymentAPIDisplay `json:"RentPayment Setting"`
	EnableIPViolation string                `json:"IP Violation Check Status"`
	MaxUploadSpeed    string                `json:"Max Upload Speed"`
	MaxDownloadSpeed  string                `json:"Max Download Speed"`
}

ClientSettingAPIDisplay is used for API Configurations Display

type ContractCreateRequest 

type ContractCreateRequest struct {
	StorageContract types.StorageContract
	Sign            []byte
	Renew           bool
	OldContractID   common.Hash
}

ContractCreateRequest contains storage contract info and client pk

type ContractID 

type ContractID common.Hash

ContractID is used to define the contract ID data type

func StringToContractID 

func StringToContractID(s string) (id ContractID, err error)

StringToContractID convert string to ContractID

func (ContractID) String 

func (ci ContractID) String() string

String method is used to convert the contractID into string format

type ContractMetaData 

type ContractMetaData struct {
	ID                     ContractID
	EnodeID                enode.ID
	LatestContractRevision types.StorageContractRevision
	StartHeight            uint64
	EndHeight              uint64

	ContractBalance common.BigInt

	UploadCost   common.BigInt
	DownloadCost common.BigInt
	StorageCost  common.BigInt

	// contract available fund
	TotalCost common.BigInt

	GasCost     common.BigInt
	ContractFee common.BigInt

	Status ContractStatus
}

ContractMetaData defines read-only detailed contract information

type ContractParams 

type ContractParams struct {
	RentPayment          RentPayment
	HostEnodeURL         string
	Funding              common.BigInt
	StartHeight          uint64
	EndHeight            uint64
	ClientPaymentAddress common.Address
	Host                 HostInfo
}

ContractParams is the drafted contract sent by the storage client.

type ContractStatus 

type ContractStatus struct {
	UploadAbility bool
	RenewAbility  bool
	Canceled      bool
}

ContractStatus is used to define the contract status data type. There are three status in total: able to upload, able to renew, and if the contract has been canceled

type DeleteUpdate 

type DeleteUpdate struct {
	FileName string
}

DeleteUpdate defines an update of delete the FileName

func (*DeleteUpdate) Apply 

func (du *DeleteUpdate) Apply() (err error)

Apply of DeleteUpdate delete du.FileName

func (*DeleteUpdate) EncodeToWalOp 

func (du *DeleteUpdate) EncodeToWalOp() (writeaheadlog.Operation, error)

EncodeToWalOp encode the DeleteUpdate to Operation, named by OpDeleteFile

type DirectoryInfo 

type DirectoryInfo struct {
	NumFiles uint64 `json:"numFiles"`

	TotalSize uint64 `json:"totalSize"`

	Health uint32 `json:"health"`

	StuckHealth uint32 `json:"stuckHealth"`

	MinRedundancy uint32 `json:"minRedundancy"`

	TimeLastHealthCheck time.Time `json:"timeLastHealthCheck"`

	TimeModify time.Time `json:"timeModify"`

	NumStuckSegments uint32 `json:"numStuckSegments"`

	DxPath DxPath `json:"dxPath"`
}

DirectoryInfo provides information about a dxdir

type DownloadParameters 

type DownloadParameters struct {
	RemoteFilePath   string
	WriteToLocalPath string
}

DownloadParameters is the parameters to download from outer request

type DownloadRequest 

type DownloadRequest struct {
	StorageContractID common.Hash
	Sector            DownloadRequestSector
	MerkleProof       bool

	NewRevisionNumber    uint64
	NewValidProofValues  []*big.Int
	NewMissedProofValues []*big.Int
	Signature            []byte
}

DownloadRequest contains the request parameters for RPCDownload.

type DownloadRequestSector 

type DownloadRequestSector struct {
	MerkleRoot [32]byte
	Offset     uint32
	Length     uint32
}

DownloadRequestSector is a section requested in DownloadRequest.

type DownloadResponse 

type DownloadResponse struct {
	Signature   []byte
	Data        []byte
	MerkleProof []common.Hash
}

DownloadResponse contains the response data for RPCDownload.

type DxPath 

type DxPath struct {
	Path string
}

DxPath is the file Path or directory Path relates to the root directory of the DxFiles. It is used in storage client and storage client's file system WARN: When creating a DxPath, please use NewDxPath method to create a new DxPath.

func NewDxPath 

func NewDxPath(s string) (DxPath, error)

NewDxPath create a DxPath with provided s string. If validation is not passed for s, an error is returned

func RootDxPath 

func RootDxPath() DxPath

RootDxPath return the special root DxPath which has Path as empty string

func (DxPath) Equals 

func (dp DxPath) Equals(dp2 DxPath) bool

Equals check whether the two DxPath are equal

func (DxPath) IsRoot 

func (dp DxPath) IsRoot() bool

IsRoot checks whether a DxPath is a root directory

func (DxPath) Join 

func (dp DxPath) Join(s string) (DxPath, error)

Join join the DxPath with s

func (DxPath) Parent 

func (dp DxPath) Parent() (DxPath, error)

Parent returns the parent DxPath of the DxPath. If the receiver is already root, return an error of ErrAlreadyExist

func (DxPath) SysPath 

func (dp DxPath) SysPath(rootDir SysPath) SysPath

SysPath return the system Path of the DxPath. It concatenate the input rootDir and DxPath

type EthBackend 

type EthBackend interface {
	APIs() []rpc.API
	GetStorageHostSetting(hostEnodeID enode.ID, hostEnodeURL string, config *HostExtConfig) error
	SubscribeChainChangeEvent(ch chan<- core.ChainChangeEvent) event.Subscription
	GetBlockByHash(blockHash common.Hash) (*types.Block, error)
	GetBlockChain() *core.BlockChain
	GetBlockByNumber(number uint64) (*types.Block, error)
	AccountManager() *accounts.Manager
	GetCurrentBlockHeight() uint64
	ChainConfig() *params.ChainConfig
	CurrentBlock() *types.Block
	SendTx(ctx context.Context, signedTx *types.Transaction) error
	SuggestPrice(ctx context.Context) (*big.Int, error)
	GetPoolNonce(ctx context.Context, addr common.Address) (uint64, error)
	SetupConnection(enodeURL string) (Peer, error)
	TryToRenewOrRevise(hostID enode.ID) bool
	RevisionOrRenewingDone(hostID enode.ID)
	SetStatic(node *enode.Node)
	CheckAndUpdateConnection(peerNode *enode.Node)
	SelfEnodeURL() string
}

EthBackend is an interface used to get methods implemented by Ethereum

type FileBriefInfo 

type FileBriefInfo struct {
	Path           string  `json:"dxpath"`
	Status         string  `json:"status"`
	UploadProgress float64 `json:"uploadProgress"`
}

FileBriefInfo is the brief info about a DxFile

type FileInfo 

type FileInfo struct {
	DxPath         string  `json:"dxpath"`
	Status         string  `json:"status"`
	SourcePath     string  `json:"sourcePath"`
	FileSize       uint64  `json:"fileSize"`
	Redundancy     uint32  `json:"redundancy"`
	StoredOnDisk   bool    `json:"storedOnDisk"`
	UploadProgress float64 `json:"uploadProgress"`
}

FileInfo is the structure containing file info to be displayed

type FileUpdate 

type FileUpdate interface {
	Apply() error                                    // Apply the content of the update
	EncodeToWalOp() (writeaheadlog.Operation, error) // convert an dxfileUpdate to writeaheadlog.Operation
}

FileUpdate defines the update interface for dxfile and dxdir update. It is the intermediate layer between dxfile/dxdir persist and wal Currently FileUpdate is implemented by InsertUpdate and DeleteUpdate

func OpToUpdate 

func OpToUpdate(op writeaheadlog.Operation) (FileUpdate, error)

OpToUpdate decodeFromWalOp will decode the wal.Operation to a specified type of dxfileUpdate based on the op.Name field

type FileUploadParams 

type FileUploadParams struct {
	Source      string
	DxPath      DxPath
	ErasureCode erasurecode.ErasureCoder
	Mode        int
}

FileUploadParams contains the information used by the Client to upload a file

type HostBackend 

type HostBackend interface {
	APIs() []rpc.API
	SubscribeChainChangeEvent(ch chan<- core.ChainChangeEvent) event.Subscription
	GetBlockByHash(blockHash common.Hash) (*types.Block, error)
	GetBlockByNumber(number uint64) (*types.Block, error)
	GetBlockChain() *core.BlockChain
	AccountManager() *accounts.Manager
	SetStatic(node *enode.Node)
	CheckAndUpdateConnection(peerNode *enode.Node)
}

HostBackend is the interface for Ethereum to be used in storage host module

type HostExtConfig 

type HostExtConfig struct {
	AcceptingContracts   bool           `json:"acceptingContracts"`
	MaxDownloadBatchSize uint64         `json:"maxDownloadBatchSize"`
	MaxDuration          uint64         `json:"maxDuration"`
	MaxReviseBatchSize   uint64         `json:"maxReviseBatchSize"`
	PaymentAddress       common.Address `json:"paymentAddress"`
	RemainingStorage     uint64         `json:"remainingStorage"`
	SectorSize           uint64         `json:"sectorSize"`
	TotalStorage         uint64         `json:"totalStorage"`

	WindowSize uint64 `json:"windowSize"`

	Deposit    common.BigInt `json:"deposit"`
	MaxDeposit common.BigInt `json:"maxDeposit"`

	BaseRPCPrice           common.BigInt `json:"baseRPCPrice"`
	ContractPrice          common.BigInt `json:"contractPrice"`
	DownloadBandwidthPrice common.BigInt `json:"downloadBandwidthPrice"`
	SectorAccessPrice      common.BigInt `json:"sectorAccessPrice"`
	StoragePrice           common.BigInt `json:"storagePrice"`
	UploadBandwidthPrice   common.BigInt `json:"uploadBandwidthPrice"`

	Version string `json:"version"`
}

HostExtConfig make group of host setting to broadcast as object

type HostFolder 

type HostFolder struct {
	Path         string `json:"path"`
	TotalSectors uint64 `json:"totalSectors"`
	UsedSectors  uint64 `json:"usedSectors"`
}

HostFolder is the host folder structure

type HostHealthInfo 

type HostHealthInfo struct {
	Offline      bool
	GoodForRenew bool
}

HostHealthInfo is the file structure used for DxFile health update. It has two fields, one indicating whether the host if offline or not, One indicating whether the contract with the host is good for renew.

type HostHealthInfoTable 

type HostHealthInfoTable map[enode.ID]HostHealthInfo

HostHealthInfoTable is the map the is passed into DxFile health update. It is a map from host id to HostHealthInfo

type HostInfo 

type HostInfo struct {
	HostExtConfig

	FirstSeen uint64 `json:"firstseen"`

	// TODO: refactor this into an interface: host interactions
	SuccessfulInteractionFactor float64                 `json:"successfulInteractionFactor"`
	FailedInteractionFactor     float64                 `json:"FailedInteractionFactor"`
	LastInteractionTime         uint64                  `json:"lastInteractionTime"`
	InteractionRecords          []HostInteractionRecord `json:"interactionRecords"`

	// TODO: refactor this into an interface: host scans
	AccumulatedUptime   float64       `json:"accumulated_uptime"`
	AccumulatedDowntime float64       `json:"accumulated_downtime"`
	LastCheckTime       uint64        `json:"last_check_time"`
	ScanRecords         HostPoolScans `json:"scan_records"`

	// IP will be decoded from the enode URL
	IP string `json:"ip"`

	IPNetwork           string    `json:"ip_network"`
	LastIPNetWorkChange time.Time `json:"last_ipnetwork_change"`

	EnodeID    enode.ID `json:"enodeid"`
	EnodeURL   string   `json:"enodeurl"`
	NodePubKey []byte   `json:"nodepubkey"`

	Filtered bool `json:"filtered"`
}

HostInfo storage storage host information

type HostIntConfig 

type HostIntConfig struct {
	AcceptingContracts   bool           `json:"acceptingContracts"`
	MaxDownloadBatchSize uint64         `json:"maxDownloadBatchSize"`
	MaxDuration          uint64         `json:"maxDuration"`
	MaxReviseBatchSize   uint64         `json:"maxReviseBatchSize"`
	WindowSize           uint64         `json:"windowSize"`
	PaymentAddress       common.Address `json:"paymentAddress"`

	Deposit       common.BigInt `json:"deposit"`
	DepositBudget common.BigInt `json:"depositBudget"`
	MaxDeposit    common.BigInt `json:"maxDeposit"`

	BaseRPCPrice           common.BigInt `json:"baseRPCPrice"`
	ContractPrice          common.BigInt `json:"contractPrice"`
	DownloadBandwidthPrice common.BigInt `json:"downloadBandwidthPrice"`
	SectorAccessPrice      common.BigInt `json:"sectorAccessPrice"`
	StoragePrice           common.BigInt `json:"storagePrice"`
	UploadBandwidthPrice   common.BigInt `json:"uploadBandwidthPrice"`
}

HostIntConfig make group of host setting as object

type HostIntConfigForDisplay 

type HostIntConfigForDisplay struct {
	AcceptingContracts   string `json:"acceptingContracts"`
	MaxDownloadBatchSize string `json:"maxDownloadBatchSize"`
	MaxDuration          string `json:"maxDuration"`
	MaxReviseBatchSize   string `json:"maxReviseBatchSize"`
	WindowSize           string `json:"windowSize"`
	PaymentAddress       string `json:"paymentAddress"`

	Deposit       string `json:"deposit"`
	DepositBudget string `json:"depositBudget"`
	MaxDeposit    string `json:"maxDeposit"`

	BaseRPCPrice           string `json:"baseRPCPrice"`
	ContractPrice          string `json:"contractPrice"`
	DownloadBandwidthPrice string `json:"downloadBandwidthPrice"`
	SectorAccessPrice      string `json:"sectorAccessPrice"`
	StoragePrice           string `json:"storagePrice"`
	UploadBandwidthPrice   string `json:"uploadBandwidthPrice"`
}

HostIntConfigForDisplay is the host internal config for displayed

type HostInteractionRecord 

type HostInteractionRecord struct {
	Time            time.Time `json:"time"`
	InteractionType string    `json:"interactionType"`
	Success         bool      `json:"success"`
}

HostInteractionRecord is the interaction record for client-host interactions which is used in hostManager

type HostPoolScan 

type HostPoolScan struct {
	Timestamp time.Time `json:"timestamp"`
	Success   bool      `json:"success"`
}

HostPoolScan recorded the scan details, including the time a storage host got scanned and whether the host is online or not

type HostPoolScans 

type HostPoolScans []HostPoolScan

HostPoolScans stores a list of host pool scan records

type HostSpace 

type HostSpace struct {
	TotalSectors uint64 `json:"totalSectors"`
	UsedSectors  uint64 `json:"usedSectors"`
	FreeSectors  uint64 `json:"freeSectors"`
}

HostSpace is the

type InsertUpdate 

type InsertUpdate struct {
	FileName string
	Offset   uint64
	Data     []byte
}

InsertUpdate defines an update of insert Data into FileName at Offset

func (*InsertUpdate) Apply 

func (iu *InsertUpdate) Apply() (err error)

Apply execute the InsertUpdate, writing data to the location

func (*InsertUpdate) EncodeToWalOp 

func (iu *InsertUpdate) EncodeToWalOp() (writeaheadlog.Operation, error)

EncodeToWalOp encode the InsertUpdate to wal.Operation, named by OpInsertFile

type MarketPrice 

type MarketPrice struct {
	ContractPrice common.BigInt
	StoragePrice  common.BigInt
	UploadPrice   common.BigInt
	DownloadPrice common.BigInt
	Deposit       common.BigInt
	MaxDeposit    common.BigInt
}

MarketPrice is the market price metrics from HostMarket

type ParsedAPI 

type ParsedAPI struct {
	NetInfo   *ethapi.PublicNetAPI
	Account   *ethapi.PrivateAccountAPI
	EthInfo   *ethapi.PublicEthereumAPI
	StorageTx *ethapi.PrivateStorageContractTxAPI
}

ParsedAPI will parse the APIs saved in the Ethereum and get the ones needed

type Peer 

type Peer interface {
	TriggerError(error)
	SendStorageHostConfig(config HostExtConfig) error
	RequestStorageHostConfig() error
	SendUploadMerkleProof(merkleProof UploadMerkleProof) error
	RequestContractCreation(req ContractCreateRequest) error
	SendContractCreateClientRevisionSign(revisionSign []byte) error
	SendContractCreationHostSign(contractSign []byte) error
	SendContractCreationHostRevisionSign(revisionSign []byte) error
	RequestContractUpload(req UploadRequest) error
	SendContractUploadClientRevisionSign(revisionSign []byte) error
	SendUploadHostRevisionSign(revisionSign []byte) error
	RequestContractDownload(req DownloadRequest) error
	SendContractDownloadData(resp DownloadResponse) error
	SendHostBusyHandleRequestErr() error
	SendClientNegotiateErrorMsg() error
	SendClientCommitFailedMsg() error
	SendClientCommitSuccessMsg() error
	SendHostCommitFailedMsg() error
	SendClientAckMsg() error
	SendHostAckMsg() error
	SendHostNegotiateErrorMsg() error
	WaitConfigResp() (p2p.Msg, error)
	ClientWaitContractResp() (msg p2p.Msg, err error)
	HostWaitContractResp() (msg p2p.Msg, err error)
	TryToRenewOrRevise() bool
	RevisionOrRenewingDone()
	TryRequestHostConfig() error
	RequestHostConfigDone()
	PeerNode() *enode.Node
	IsStaticConn() bool
}

Peer is the interface returned by the SetupConnection. The use of it is to allow eth.peer object to be used in the storage model. All the methods provided in the Peer interface is used for negotiation during the contract create, contract revision, contract renew, and configuration request

type PeriodCost 

type PeriodCost struct {
	// ContractFees = ContractFee + GasFee
	ContractFees     common.BigInt `json:"contractFees"`
	UploadCost       common.BigInt `json:"uploadCost"`
	DownloadCost     common.BigInt `json:"downloadCost"`
	StorageCost      common.BigInt `json:"storageCost"`
	PrevContractCost common.BigInt `json:"prevContractCost"`

	ContractFund             common.BigInt `json:"contractFund"`
	UnspentFund              common.BigInt `json:"unspentFund"`
	WithheldFund             common.BigInt `json:"withheldFund"`
	WithheldFundReleaseBlock uint64        `json:"withheldFundReleaseBlock"`
}

PeriodCost specifies cost storage client needs to pay within one period cycle. It includes cost for all contracts

type RentPayment 

type RentPayment struct {
	Fund         common.BigInt `json:"fund"`
	StorageHosts uint64        `json:"storageHosts"`
	Period       uint64        `json:"period"`

	// ExpectedStorage is amount of data expected to be stored
	ExpectedStorage uint64 `json:"expectedStorage"`
	// ExpectedUpload is expected amount of data upload before redundancy / block
	ExpectedUpload uint64 `json:"expectedUpload"`
	// ExpectedDownload is expected amount of data downloaded / block
	ExpectedDownload uint64 `json:"expectedDownload"`
	// ExpectedRedundancy is the average redundancy of files uploaded
	ExpectedRedundancy float64 `json:"expectedRedundancy"`
}

RentPayment stores the StorageClient payment settings for renting the storage space from the host

type RentPaymentAPIDisplay 

type RentPaymentAPIDisplay struct {
	Fund         string `json:"Fund"`
	StorageHosts string `json:"Number of Storage Hosts"`
	Period       string `json:"Storage Time"`

	// ExpectedStorage is amount of data expected to be stored
	ExpectedStorage string `json:"Expected Storage"`
	// ExpectedUpload is expected amount of data upload before redundancy / block
	ExpectedUpload string `json:"Expected Upload"`
	// ExpectedDownload is expected amount of data downloaded / block
	ExpectedDownload string `json:"Expected Download"`
	// ExpectedRedundancy is the average redundancy of files uploaded
	ExpectedRedundancy string `json:"Expected Redundancy"`
}

RentPaymentAPIDisplay is used for API Configurations Display

type SysPath 

type SysPath string

SysPath is the actual system Path of a file or a directory.

func (SysPath) Join 

func (sp SysPath) Join(dp DxPath, extra ...string) SysPath

Join join the receiver syspath with DxPath and some extrafields.

type UploadAction 

type UploadAction struct {
	Type string
	A, B uint64
	Data []byte
}

UploadAction is a generic Write action. The meaning of each field depends on the Type of the action.

type UploadFileInfo 

type UploadFileInfo struct {
	AccessTime       time.Time `json:"accessTime"`
	Available        bool      `json:"available"`
	ChangeTime       time.Time `json:"changeTime"`
	CipherType       string    `json:"cipherType"`
	CreateTime       time.Time `json:"createTime"`
	Expiration       uint64    `json:"expiration"`
	FileSize         uint64    `json:"fileSize"`
	Health           float64   `json:"health"`
	LocalPath        string    `json:"localPath"`
	MaxHealth        float64   `json:"maxHealth"`
	MaxHealthPercent float64   `json:"maxHealthPercent"`
	ModTime          time.Time `json:"modTime"`
	NumStuckChunks   uint64    `json:"numStuckChunks"`
	OnDisk           bool      `json:"onDisk"`
	Recoverable      bool      `json:"recoverable"`
	Redundancy       float64   `json:"redundancy"`
	Renewing         bool      `json:"renewing"`
	DxPath           string    `json:"dxpath"`
	Stuck            bool      `json:"stuck"`
	StuckHealth      float64   `json:"stuckHealth"`
	UploadedBytes    uint64    `json:"uploadedBytes"`
	UploadProgress   float64   `json:"uploadProgress"`
}

UploadFileInfo provides information about a file

type UploadMerkleProof 

type UploadMerkleProof struct {
	OldSubtreeHashes []common.Hash
	OldLeafHashes    []common.Hash
	NewMerkleRoot    common.Hash
}

UploadMerkleProof contains the optional Merkle proof for response data for RPCUpload.

type UploadRequest 

type UploadRequest struct {
	StorageContractID common.Hash
	Actions           []UploadAction

	NewRevisionNumber    uint64
	NewValidProofValues  []*big.Int
	NewMissedProofValues []*big.Int
}

UploadRequest contains the request parameters for RPCUpload.

Source Files

View all Source files

Directories

Path Synopsis
contractmanager
contractset
erasurecode
filesystem
filesystem/dxdir
filesystem/dxfile
memorymanager
Package memorymanager implements the storage client memory management methods
 Package memorymanager implements the storage client memory management methods
storagehostmanager
storagehosttree
storagemanager

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