historyarchive

package
v0.0.0-...-095633c Latest Latest
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This package is not in the latest version of its module.

 Go to latest Published: Jun 10, 2024 License: Apache-2.0, Apache-2.0 Imports: 37 Imported by: 0

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) 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)
	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

	// 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) 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 Hcnet-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 (!) hcnet-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) 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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