historyarchive

package
v0.0.0-...-64efc32 Latest Latest
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Published: Oct 14, 2024 License: Apache-2.0, Apache-2.0 Imports: 37 Imported by: 24

Documentation

Index

Constants

View Source
const DefaultCheckpointFrequency = uint32(64)
View Source
const NumLevels = 11

Variables

This section is empty.

Functions

func BucketPath

func BucketPath(bucket Hash) string

func Categories

func Categories() []string

func CategoryCheckpointPath

func CategoryCheckpointPath(cat string, chk uint32) string

func ConnectBackend

func ConnectBackend(u string, opts storage.ConnectOptions) (storage.Storage, error)

func DumpXdrAsJson

func DumpXdrAsJson(args []string) error

func Mirror

func Mirror(src *Archive, dst *Archive, opts *CommandOptions) error

Mirror mirrors an archive, it assumes that the source and destination have the same checkpoint ledger frequency

func NameLockfile

func NameLockfile(file string) string

func RangePaths

func RangePaths(r Range) []string

Returns an array of path prefixes to walk to enumerate all the objects in the provided range.

func Repair

func Repair(src *Archive, dst *Archive, opts *CommandOptions) error

Repair repairs a destination archive based on a source archive, it assumes that the source and destination have the same checkpoint ledger frequency

func SortTxsForHash

func SortTxsForHash(txset *xdr.TransactionSet) error

Types

type Archive

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

func Connect

func Connect(u string, opts ArchiveOptions) (*Archive, error)

func MustConnect

func MustConnect(u string, opts ArchiveOptions) *Archive

func (*Archive) BucketExists

func (a *Archive) BucketExists(bucket Hash) (bool, error)

func (*Archive) BucketSize

func (a *Archive) BucketSize(bucket Hash) (int64, error)

func (*Archive) CategoryCheckpointExists

func (a *Archive) CategoryCheckpointExists(cat string, chk uint32) (bool, error)

func (*Archive) CheckBucketsMissing

func (arch *Archive) CheckBucketsMissing() map[Hash]bool

func (*Archive) CheckCheckpointFilesMissing

func (arch *Archive) CheckCheckpointFilesMissing(opts *CommandOptions) map[string][]uint32

func (*Archive) ClearCachedInfo

func (arch *Archive) ClearCachedInfo()

func (*Archive) GetBucketPathForHash

func (a *Archive) GetBucketPathForHash(hash Hash) string

func (*Archive) GetCheckpointHAS

func (a *Archive) GetCheckpointHAS(chk uint32) (HistoryArchiveState, error)

func (*Archive) GetCheckpointManager

func (arch *Archive) GetCheckpointManager() CheckpointManager

func (*Archive) GetLatestLedgerSequence

func (a *Archive) GetLatestLedgerSequence() (uint32, error)

func (*Archive) GetLedgerHeader

func (a *Archive) GetLedgerHeader(ledger uint32) (xdr.LedgerHeaderHistoryEntry, error)

func (*Archive) GetLedgers

func (a *Archive) GetLedgers(start, end uint32) (map[uint32]*Ledger, error)

func (*Archive) GetPathHAS

func (a *Archive) GetPathHAS(path string) (HistoryArchiveState, error)

func (*Archive) GetRootHAS

func (a *Archive) GetRootHAS() (HistoryArchiveState, error)

func (*Archive) GetStats

func (arch *Archive) GetStats() []ArchiveStats

func (*Archive) GetXdrStream

func (a *Archive) GetXdrStream(pth string) (*XdrStream, error)

func (*Archive) GetXdrStreamForHash

func (a *Archive) GetXdrStreamForHash(hash Hash) (*XdrStream, error)

func (*Archive) ListAllBucketHashes

func (a *Archive) ListAllBucketHashes() (chan Hash, chan error)

func (*Archive) ListAllBuckets

func (a *Archive) ListAllBuckets() (chan string, chan error)

func (*Archive) ListBucket

func (a *Archive) ListBucket(dp DirPrefix) (chan string, chan error)

func (*Archive) ListCategoryCheckpoints

func (a *Archive) ListCategoryCheckpoints(cat string, pth string) (chan uint32, chan error)

func (*Archive) Log

func (arch *Archive) Log(opts *CommandOptions) error

func (*Archive) MustGetBucketSize

func (arch *Archive) MustGetBucketSize(hash Hash) int64

func (*Archive) MustGetLedgerHeaderHistoryEntries

func (arch *Archive) MustGetLedgerHeaderHistoryEntries(chk uint32) []xdr.LedgerHeaderHistoryEntry

func (*Archive) MustGetTransactionHistoryEntries

func (arch *Archive) MustGetTransactionHistoryEntries(chk uint32) []xdr.TransactionHistoryEntry

func (*Archive) NoteCheckpointFile

func (arch *Archive) NoteCheckpointFile(cat string, chk uint32, present bool)

func (*Archive) NoteExistingBucket

func (arch *Archive) NoteExistingBucket(bucket Hash)

func (*Archive) NoteReferencedBucket

func (arch *Archive) NoteReferencedBucket(bucket Hash) bool

func (*Archive) PutCheckpointHAS

func (a *Archive) PutCheckpointHAS(chk uint32, has HistoryArchiveState, opts *CommandOptions) error

func (*Archive) PutPathHAS

func (a *Archive) PutPathHAS(path string, has HistoryArchiveState, opts *CommandOptions) error

func (*Archive) PutRootHAS

func (a *Archive) PutRootHAS(has HistoryArchiveState, opts *CommandOptions) error

func (*Archive) ReportBucketStats

func (arch *Archive) ReportBucketStats()

func (*Archive) ReportCheckpointStats

func (arch *Archive) ReportCheckpointStats()

func (*Archive) ReportInvalid

func (arch *Archive) ReportInvalid(opts *CommandOptions) (bool, error)

func (*Archive) ReportMissing

func (arch *Archive) ReportMissing(opts *CommandOptions) (bool, error)

func (*Archive) Scan

func (arch *Archive) Scan(opts *CommandOptions) error

func (*Archive) ScanAllBuckets

func (arch *Archive) ScanAllBuckets() error

func (*Archive) ScanBuckets

func (arch *Archive) ScanBuckets(opts *CommandOptions) error

func (*Archive) ScanCheckpoints

func (arch *Archive) ScanCheckpoints(opts *CommandOptions) error

func (*Archive) ScanCheckpointsFast

func (arch *Archive) ScanCheckpointsFast(opts *CommandOptions) error

func (*Archive) ScanCheckpointsSlow

func (arch *Archive) ScanCheckpointsSlow(opts *CommandOptions) error

func (*Archive) VerifyBucketEntries

func (arch *Archive) VerifyBucketEntries(h Hash) error

func (*Archive) VerifyBucketHash

func (arch *Archive) VerifyBucketHash(h Hash) error

func (*Archive) VerifyCategoryCheckpoint

func (arch *Archive) VerifyCategoryCheckpoint(cat string, chk uint32) error

func (*Archive) VerifyLedgerHeaderHistoryEntry

func (arch *Archive) VerifyLedgerHeaderHistoryEntry(entry *xdr.LedgerHeaderHistoryEntry) error

func (*Archive) VerifyTransactionHistoryEntry

func (arch *Archive) VerifyTransactionHistoryEntry(entry *xdr.TransactionHistoryEntry) error

func (*Archive) VerifyTransactionHistoryResultEntry

func (arch *Archive) VerifyTransactionHistoryResultEntry(entry *xdr.TransactionHistoryResultEntry) error

type ArchiveBucketCache

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

func MakeArchiveBucketCache

func MakeArchiveBucketCache(opts CacheOptions) (*ArchiveBucketCache, error)

MakeArchiveBucketCache creates a cache on the disk at the given path that acts as an LRU cache, mimicking a particular upstream.

func (*ArchiveBucketCache) Close

func (abc *ArchiveBucketCache) Close() error

Close purges the cache and cleans up the filesystem.

func (*ArchiveBucketCache) Evict

func (abc *ArchiveBucketCache) Evict(filepath string)

Evict removes a file from the cache and the filesystem.

func (*ArchiveBucketCache) Exists

func (abc *ArchiveBucketCache) Exists(filepath string) bool

func (*ArchiveBucketCache) GetFile

func (abc *ArchiveBucketCache) GetFile(
	filepath string,
	upstream storage.Storage,
) (io.ReadCloser, bool, error)

GetFile retrieves the file contents from the local cache if present. Otherwise, it returns the same result as the upstream, adding that result into the local cache if possible. It returns a 3-tuple of a reader (which may be nil on an error), an indication of whether or not it was *found* in the cache, and any error.

type ArchiveInterface

type ArchiveInterface interface {
	GetPathHAS(path string) (HistoryArchiveState, error)
	PutPathHAS(path string, has HistoryArchiveState, opts *CommandOptions) error
	BucketExists(bucket Hash) (bool, error)
	BucketSize(bucket Hash) (int64, error)
	CategoryCheckpointExists(cat string, chk uint32) (bool, error)
	GetLedgerHeader(chk uint32) (xdr.LedgerHeaderHistoryEntry, error)
	GetRootHAS() (HistoryArchiveState, error)
	GetLedgers(start, end uint32) (map[uint32]*Ledger, error)
	GetLatestLedgerSequence() (uint32, error)
	GetCheckpointHAS(chk uint32) (HistoryArchiveState, error)
	PutCheckpointHAS(chk uint32, has HistoryArchiveState, opts *CommandOptions) error
	PutRootHAS(has HistoryArchiveState, opts *CommandOptions) error
	ListBucket(dp DirPrefix) (chan string, chan error)
	ListAllBuckets() (chan string, chan error)
	ListAllBucketHashes() (chan Hash, chan error)
	ListCategoryCheckpoints(cat string, pth string) (chan uint32, chan error)
	GetXdrStreamForHash(hash Hash) (*XdrStream, error)
	GetXdrStream(pth string) (*XdrStream, error)
	GetCheckpointManager() CheckpointManager
	GetStats() []ArchiveStats
}

func NewArchivePool

func NewArchivePool(archiveURLs []string, opts ArchiveOptions) (ArchiveInterface, error)

NewArchivePool tries connecting to each of the provided history archive URLs, returning a pool of valid archives.

If none of the archives work, this returns the error message of the last failed archive. Note that the errors for each individual archive are hard to track if there's success overall.

func NewArchivePoolWithBackoff

func NewArchivePoolWithBackoff(archiveURLs []string, opts ArchiveOptions, strategy backoff.BackOff) (ArchiveInterface, error)

type ArchiveOptions

type ArchiveOptions struct {
	storage.ConnectOptions

	Logger *supportlog.Entry
	// NetworkPassphrase defines the expected network of history archive. It is
	// checked when getting HAS. If network passphrase does not match, error is
	// returned.
	NetworkPassphrase string
	// CheckpointFrequency is the number of ledgers between checkpoints
	// if unset, DefaultCheckpointFrequency will be used
	CheckpointFrequency uint32
	// CachePath controls where/if bucket files are cached on the disk.
	CachePath string
}

type ArchivePool

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

An ArchivePool is just a collection of `ArchiveInterface`s so that we can distribute requests fairly throughout the pool.

func (*ArchivePool) BucketExists

func (pa *ArchivePool) BucketExists(bucket Hash) (bool, error)

func (*ArchivePool) BucketSize

func (pa *ArchivePool) BucketSize(bucket Hash) (int64, error)

func (*ArchivePool) CategoryCheckpointExists

func (pa *ArchivePool) CategoryCheckpointExists(cat string, chk uint32) (bool, error)

func (*ArchivePool) GetCheckpointHAS

func (pa *ArchivePool) GetCheckpointHAS(chk uint32) (HistoryArchiveState, error)

func (*ArchivePool) GetCheckpointManager

func (pa *ArchivePool) GetCheckpointManager() CheckpointManager

func (*ArchivePool) GetLatestLedgerSequence

func (pa *ArchivePool) GetLatestLedgerSequence() (uint32, error)

func (*ArchivePool) GetLedgerHeader

func (pa *ArchivePool) GetLedgerHeader(chk uint32) (xdr.LedgerHeaderHistoryEntry, error)

func (*ArchivePool) GetLedgers

func (pa *ArchivePool) GetLedgers(start, end uint32) (map[uint32]*Ledger, error)

func (*ArchivePool) GetPathHAS

func (pa *ArchivePool) GetPathHAS(path string) (HistoryArchiveState, error)

func (*ArchivePool) GetRootHAS

func (pa *ArchivePool) GetRootHAS() (HistoryArchiveState, error)

func (*ArchivePool) GetStats

func (pa *ArchivePool) GetStats() []ArchiveStats

func (*ArchivePool) GetXdrStream

func (pa *ArchivePool) GetXdrStream(pth string) (*XdrStream, error)

func (*ArchivePool) GetXdrStreamForHash

func (pa *ArchivePool) GetXdrStreamForHash(hash Hash) (*XdrStream, error)

func (*ArchivePool) ListAllBucketHashes

func (pa *ArchivePool) ListAllBucketHashes() (chan Hash, chan error)

func (*ArchivePool) ListAllBuckets

func (pa *ArchivePool) ListAllBuckets() (chan string, chan error)

func (*ArchivePool) ListBucket

func (pa *ArchivePool) ListBucket(dp DirPrefix) (chan string, chan error)

func (*ArchivePool) ListCategoryCheckpoints

func (pa *ArchivePool) ListCategoryCheckpoints(cat string, pth string) (chan uint32, chan error)

func (*ArchivePool) PutCheckpointHAS

func (pa *ArchivePool) PutCheckpointHAS(chk uint32, has HistoryArchiveState, opts *CommandOptions) error

func (*ArchivePool) PutPathHAS

func (pa *ArchivePool) PutPathHAS(path string, has HistoryArchiveState, opts *CommandOptions) error

func (*ArchivePool) PutRootHAS

func (pa *ArchivePool) PutRootHAS(has HistoryArchiveState, opts *CommandOptions) error

type ArchiveStats

type ArchiveStats interface {
	GetRequests() uint32
	GetDownloads() uint32
	GetUploads() uint32
	GetCacheHits() uint32
	GetCacheBandwidth() uint64
	GetBackendName() string
}

type CacheOptions

type CacheOptions struct {
	Cache bool

	Path     string
	MaxFiles uint
	Log      *log.Entry
}

type CheckpointManager

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

func NewCheckpointManager

func NewCheckpointManager(checkpointFrequency uint32) CheckpointManager

NewCheckpointManager creates a CheckpointManager based on a checkpoint frequency (the number of ledgers between ledger checkpoints). If checkpointFrequency is 0 DefaultCheckpointFrequency will be used.

func (CheckpointManager) GetCheckpoint

func (c CheckpointManager) GetCheckpoint(i uint32) uint32

GetCheckPoint gets the checkpoint containing information about the given ledger sequence

func (CheckpointManager) GetCheckpointFrequency

func (c CheckpointManager) GetCheckpointFrequency() uint32

func (CheckpointManager) GetCheckpointRange

func (c CheckpointManager) GetCheckpointRange(i uint32) Range

GetCheckpointRange gets the range of the checkpoint containing information for the given ledger sequence

func (CheckpointManager) IsCheckpoint

func (c CheckpointManager) IsCheckpoint(i uint32) bool

func (CheckpointManager) MakeRange

func (c CheckpointManager) MakeRange(low uint32, high uint32) Range

func (CheckpointManager) NextCheckpoint

func (c CheckpointManager) NextCheckpoint(i uint32) uint32

NextCheckpoint returns the checkpoint ledger following `i`.

func (CheckpointManager) PrevCheckpoint

func (c CheckpointManager) PrevCheckpoint(i uint32) uint32

PrevCheckpoint returns the checkpoint ledger preceding `i`.

type CommandOptions

type CommandOptions struct {
	Concurrency  int
	Range        Range
	DryRun       bool
	Force        bool
	Verify       bool
	Thorough     bool
	SkipOptional bool
}

type DirPrefix

type DirPrefix [3]uint8

func CheckpointPrefix

func CheckpointPrefix(seq uint32) DirPrefix

func HashPrefix

func HashPrefix(h Hash) DirPrefix

func (DirPrefix) Path

func (d DirPrefix) Path() string

type FailingMockArchiveBackend

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

FailingMockArchiveBackend is a mocking backend that will fail only when you try to read but otherwise behave like MockArchiveBackend.

func (*FailingMockArchiveBackend) CanListFiles

func (b *FailingMockArchiveBackend) CanListFiles() bool

func (*FailingMockArchiveBackend) Close

func (b *FailingMockArchiveBackend) Close() error

func (*FailingMockArchiveBackend) Exists

func (b *FailingMockArchiveBackend) Exists(pth string) (bool, error)

func (*FailingMockArchiveBackend) GetFile

func (b *FailingMockArchiveBackend) GetFile(pth string) (io.ReadCloser, error)

func (*FailingMockArchiveBackend) ListFiles

func (b *FailingMockArchiveBackend) ListFiles(pth string) (chan string, chan error)

func (*FailingMockArchiveBackend) PutFile

func (b *FailingMockArchiveBackend) PutFile(pth string, in io.ReadCloser) error

func (*FailingMockArchiveBackend) Size

func (b *FailingMockArchiveBackend) Size(pth string) (int64, error)

type FakeReader

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

func (*FakeReader) Close

func (fr *FakeReader) Close() error

func (*FakeReader) Read

func (fr *FakeReader) Read(b []byte) (int, error)

type Hash

type Hash [sha256.Size]byte

func DecodeHash

func DecodeHash(s string) (Hash, error)

func EmptyXdrArrayHash

func EmptyXdrArrayHash() Hash

func HashEmptyTxSet

func HashEmptyTxSet(previousLedgerHash Hash) Hash

func HashTxSet

func HashTxSet(txset *xdr.TransactionSet) (Hash, error)

func HashXdr

func HashXdr(x interface{}) (Hash, error)

func MustDecodeHash

func MustDecodeHash(s string) Hash

func (Hash) IsZero

func (h Hash) IsZero() bool

func (Hash) String

func (h Hash) String() string

type HistoryArchiveState

type HistoryArchiveState struct {
	Version       int    `json:"version"`
	Server        string `json:"server"`
	CurrentLedger uint32 `json:"currentLedger"`
	// NetworkPassphrase was added in Stellar-Core v14.1.0. Can be missing
	// in HAS created by previous versions.
	NetworkPassphrase string `json:"networkPassphrase"`
	CurrentBuckets    [NumLevels]struct {
		Curr string `json:"curr"`
		Snap string `json:"snap"`
		Next struct {
			State  uint32 `json:"state"`
			Output string `json:"output,omitempty"`
		} `json:"next"`
	} `json:"currentBuckets"`
}

func (*HistoryArchiveState) BucketListHash

func (h *HistoryArchiveState) BucketListHash() (xdr.Hash, error)

BucketListHash calculates the hash of bucket list in the HistoryArchiveState. This can be later compared with LedgerHeader.BucketListHash of the checkpoint ledger to ensure data in history archive has not been changed by a malicious actor. Warning: Ledger header should be fetched from a trusted (!) stellar-core instead of ex. history archives!

func (*HistoryArchiveState) Buckets

func (h *HistoryArchiveState) Buckets() ([]Hash, error)

func (*HistoryArchiveState) GetChangedBuckets

func (has *HistoryArchiveState) GetChangedBuckets(arch *Archive, prevHas *HistoryArchiveState) (string, int, int64)

func (*HistoryArchiveState) LevelSummary

func (h *HistoryArchiveState) LevelSummary() (string, int, error)

func (*HistoryArchiveState) Range

func (h *HistoryArchiveState) Range() Range

type Ledger

type Ledger struct {
	Header            xdr.LedgerHeaderHistoryEntry
	Transaction       xdr.TransactionHistoryEntry
	TransactionResult xdr.TransactionHistoryResultEntry
}

type MockArchive

type MockArchive struct {
	mock.Mock
}

MockArchive is a mockable archive.

func (*MockArchive) BucketExists

func (m *MockArchive) BucketExists(bucket Hash) (bool, error)

func (*MockArchive) BucketSize

func (m *MockArchive) BucketSize(bucket Hash) (int64, error)

func (*MockArchive) CategoryCheckpointExists

func (m *MockArchive) CategoryCheckpointExists(cat string, chk uint32) (bool, error)

func (*MockArchive) GetCheckpointHAS

func (m *MockArchive) GetCheckpointHAS(chk uint32) (HistoryArchiveState, error)

func (*MockArchive) GetCheckpointManager

func (m *MockArchive) GetCheckpointManager() CheckpointManager

func (*MockArchive) GetLatestLedgerSequence

func (m *MockArchive) GetLatestLedgerSequence() (uint32, error)

func (*MockArchive) GetLedgerHeader

func (m *MockArchive) GetLedgerHeader(chk uint32) (xdr.LedgerHeaderHistoryEntry, error)

func (*MockArchive) GetLedgers

func (m *MockArchive) GetLedgers(start, end uint32) (map[uint32]*Ledger, error)

func (*MockArchive) GetPathHAS

func (m *MockArchive) GetPathHAS(path string) (HistoryArchiveState, error)

func (*MockArchive) GetRootHAS

func (m *MockArchive) GetRootHAS() (HistoryArchiveState, error)

func (*MockArchive) GetStats

func (m *MockArchive) GetStats() []ArchiveStats

func (*MockArchive) GetXdrStream

func (m *MockArchive) GetXdrStream(pth string) (*XdrStream, error)

func (*MockArchive) GetXdrStreamForHash

func (m *MockArchive) GetXdrStreamForHash(hash Hash) (*XdrStream, error)

func (*MockArchive) ListAllBucketHashes

func (m *MockArchive) ListAllBucketHashes() (chan Hash, chan error)

func (*MockArchive) ListAllBuckets

func (m *MockArchive) ListAllBuckets() (chan string, chan error)

func (*MockArchive) ListBucket

func (m *MockArchive) ListBucket(dp DirPrefix) (chan string, chan error)

func (*MockArchive) ListCategoryCheckpoints

func (m *MockArchive) ListCategoryCheckpoints(cat string, pth string) (chan uint32, chan error)

func (*MockArchive) PutCheckpointHAS

func (m *MockArchive) PutCheckpointHAS(chk uint32, has HistoryArchiveState, opts *CommandOptions) error

func (*MockArchive) PutPathHAS

func (m *MockArchive) PutPathHAS(path string, has HistoryArchiveState, opts *CommandOptions) error

func (*MockArchive) PutRootHAS

func (m *MockArchive) PutRootHAS(has HistoryArchiveState, opts *CommandOptions) error

type MockArchiveBackend

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

func (*MockArchiveBackend) CanListFiles

func (b *MockArchiveBackend) CanListFiles() bool

func (*MockArchiveBackend) Close

func (b *MockArchiveBackend) Close() error

func (*MockArchiveBackend) Exists

func (b *MockArchiveBackend) Exists(pth string) (bool, error)

func (*MockArchiveBackend) GetFile

func (b *MockArchiveBackend) GetFile(pth string) (io.ReadCloser, error)

func (*MockArchiveBackend) ListFiles

func (b *MockArchiveBackend) ListFiles(pth string) (chan string, chan error)

func (*MockArchiveBackend) PutFile

func (b *MockArchiveBackend) PutFile(pth string, in io.ReadCloser) error

func (*MockArchiveBackend) Size

func (b *MockArchiveBackend) Size(pth string) (int64, error)

type MockArchiveStats

type MockArchiveStats struct {
	mock.Mock
}

func (*MockArchiveStats) GetBackendName

func (m *MockArchiveStats) GetBackendName() string

func (*MockArchiveStats) GetCacheBandwidth

func (m *MockArchiveStats) GetCacheBandwidth() uint64

func (*MockArchiveStats) GetCacheHits

func (m *MockArchiveStats) GetCacheHits() uint32

func (*MockArchiveStats) GetDownloads

func (m *MockArchiveStats) GetDownloads() uint32

func (*MockArchiveStats) GetRequests

func (m *MockArchiveStats) GetRequests() uint32

func (*MockArchiveStats) GetUploads

func (m *MockArchiveStats) GetUploads() uint32

type Range

type Range struct {
	Low  uint32
	High uint32
}

func (Range) GenerateCheckpoints

func (r Range) GenerateCheckpoints(cManager CheckpointManager) chan uint32

func (Range) InRange

func (r Range) InRange(sequence uint32) bool

func (Range) Size

func (r Range) Size() uint32

func (Range) SizeInCheckPoints

func (r Range) SizeInCheckPoints(cManager CheckpointManager) int

func (Range) String

func (r Range) String() string

type XdrStream

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

func CreateXdrStream

func CreateXdrStream(entries ...xdr.BucketEntry) *XdrStream

func NewXdrGzStream

func NewXdrGzStream(in io.ReadCloser) (*XdrStream, error)

func NewXdrStream

func NewXdrStream(in io.ReadCloser) *XdrStream

func (*XdrStream) BytesRead

func (x *XdrStream) BytesRead() int64

BytesRead returns the number of bytes read in the stream

func (*XdrStream) Close

func (x *XdrStream) Close() error

Close closes all internal readers and checks if the expected hash (if set by SetExpectedHash) matches the actual hash of the stream.

func (*XdrStream) Discard

func (x *XdrStream) Discard(n int64) (int64, error)

Discard removes n bytes from the stream

func (*XdrStream) ExpectedHash

func (x *XdrStream) ExpectedHash() ([sha256.Size]byte, bool)

ExpectedHash returns the expected hash and a boolean indicating if the expected hash was set

func (*XdrStream) GzipBytesRead

func (x *XdrStream) GzipBytesRead() int64

GzipBytesRead returns the number of gzip bytes read in the stream. Returns -1 if underlying reader is not gzipped.

func (*XdrStream) ReadOne

func (x *XdrStream) ReadOne(in xdr.DecoderFrom) error

func (*XdrStream) SetExpectedHash

func (x *XdrStream) SetExpectedHash(hash [sha256.Size]byte)

SetExpectedHash sets expected hash that will be checked in Close(). This (obviously) needs to be set before Close() is called.

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