entryBlock

package
v6.5.1-rc1+incompatible Latest Latest
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 Go to latest Published: Dec 19, 2019 License: Apache-2.0, BSD-2-Clause, BSD-3-Clause, + 4 more Imports: 12 Imported by: 0

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Index

Constants

This section is empty.

Variables

This section is empty.

Functions

func DeterministicEntry 

func DeterministicEntry(i int) interfaces.IEBEntry

DeterministicEntry creates a new entry deterministically based on the input integer

func ExternalIDsToChainID 

func ExternalIDsToChainID(extIDs [][]byte) interfaces.IHash

ExternalIDsToChainID converts the input external ids into a chain id. ChainID = primitives.Sha(Sha(ExtIDs[0]) + Sha(ExtIDs[1] + ... + Sha(ExtIDs[n]))

func MarshalEntryList 

func MarshalEntryList(list []interfaces.IEBEntry) ([]byte, error)

MarshalEntryList marshals the input list into a single byte array

func NewChainID 

func NewChainID(e interfaces.IEBEntry) interfaces.IHash

NewChainID generates a ChainID from an entry. ChainID = primitives.Sha(Sha(ExtIDs[0]) + Sha(ExtIDs[1] + ... + Sha(ExtIDs[n]))

func RandomEntry 

func RandomEntry() interfaces.IEBEntry

RandomEntry produces an entry object with randomly initialized values

func UnmarshalEBlock 

func UnmarshalEBlock(data []byte) (interfaces.IEntryBlock, error)

UnmarshalEBlock unmarshals the input data into a new entry block

func UnmarshalEBlockData 

func UnmarshalEBlockData(data []byte) (interfaces.IEntryBlock, []byte, error)

UnmarshalEBlockData unmarshals the input data into a new entry block

func UnmarshalEntry 

func UnmarshalEntry(data []byte) (interfaces.IEBEntry, error)

UnmarshalEntry unmarshals the input data into a new entry

func UnmarshalEntryList 

func UnmarshalEntryList(data []byte) ([]interfaces.IEBEntry, []byte, error)

UnmarshalEntryList unmarshals the input byte array into a list of entries

Types

type EBlock 

type EBlock struct {
	Header interfaces.IEntryBlockHeader `json:"header"` // Header of the Eblock
	Body   *EBlockBody                  `json:"body"`   // Array of entries from a single chain id associated with this entry block
}

EBlock is the Entry Block. It holds the hashes of the Entries and its Merkle Root is written into the Directory Blocks. Each Entry Block represents all of the entries for a particular Chain during a 10 minute period (a single directory block's worth of time)

func NewEBlock 

func NewEBlock() *EBlock

NewEBlock returns a blank initialized Entry Block with all fields zeroed.

func (*EBlock) AddEBEntry 

func (e *EBlock) AddEBEntry(entry interfaces.IEBEntry) error

AddEBEntry creates a new Entry Block Entry from the provided Factom Entry and adds it to the Entry Block Body.

func (*EBlock) AddEndOfMinuteMarker 

func (e *EBlock) AddEndOfMinuteMarker(m byte) error

AddEndOfMinuteMarker adds the End of Minute to the Entry Block. The End of Minute byte becomes the last byte in a 32 byte slice that is added to the Entry Block Body as an Entry Block Entry.

func (*EBlock) BodyKeyMR 

func (e *EBlock) BodyKeyMR() (rval interfaces.IHash)

BodyKeyMR updates the entry header with its current state, and then returns the body Merkle root

func (*EBlock) BuildHeader 

func (e *EBlock) BuildHeader() error

BuildHeader updates the Entry Block Header to include information about the Entry Block Body. BuildHeader should be run after the Entry Block Body has included all of its EntryEntries.

func (*EBlock) DatabasePrimaryIndex 

func (e *EBlock) DatabasePrimaryIndex() (rval interfaces.IHash)

DatabasePrimaryIndex returns the key Merkle root of the entry block

func (*EBlock) DatabaseSecondaryIndex 

func (e *EBlock) DatabaseSecondaryIndex() (rval interfaces.IHash)

DatabaseSecondaryIndex returns the single sha of the marshalled object

func (*EBlock) GetBody 

func (e *EBlock) GetBody() interfaces.IEBlockBody

GetBody returns the body of the entry block

func (*EBlock) GetChainID 

func (e *EBlock) GetChainID() (rval interfaces.IHash)

GetChainID returns the chain id associated with this entry block

func (*EBlock) GetDatabaseHeight 

func (e *EBlock) GetDatabaseHeight() uint32

GetDatabaseHeight returns the directory block height

func (*EBlock) GetEntryHashes 

func (e *EBlock) GetEntryHashes() []interfaces.IHash

GetEntryHashes returns the cumulative entries into a single chain for this 10 minute block

func (*EBlock) GetEntrySigHashes 

func (e *EBlock) GetEntrySigHashes() []interfaces.IHash

GetEntrySigHashes always returns nil

func (*EBlock) GetHash 

func (e *EBlock) GetHash() (rval interfaces.IHash)

GetHash returns the single sha of the marshalled object

func (*EBlock) GetHashOfChainID 

func (e *EBlock) GetHashOfChainID() []byte

GetHashOfChainID returns the double sha of the chain id

func (*EBlock) GetHashOfChainIDHash 

func (e *EBlock) GetHashOfChainIDHash() (rval interfaces.IHash)

GetHashOfChainIDHash returns the double sha of the chain id

func (*EBlock) GetHeader 

func (e *EBlock) GetHeader() interfaces.IEntryBlockHeader

GetHeader returns the header of the entry block

func (*EBlock) Hash 

func (e *EBlock) Hash() (interfaces.IHash, error)

Hash returns the simple Sha256 hash of the serialized Entry Block. Hash is used to provide the PrevFullHash to the next Entry Block in a Chain.

func (*EBlock) HeaderHash 

func (e *EBlock) HeaderHash() (interfaces.IHash, error)

HeaderHash returns the single sha of the marshalled header object

func (*EBlock) Init 

func (e *EBlock) Init()

Init initializes any nil members of the entry block

func (*EBlock) IsSameAs 

func (e *EBlock) IsSameAs(b interfaces.IEntryBlock) bool

IsSameAs returns true iff the two entry blocks are identical

func (*EBlock) JSONByte 

func (e *EBlock) JSONByte() ([]byte, error)

JSONByte returns the json encoded byte array

func (*EBlock) JSONString 

func (e *EBlock) JSONString() (string, error)

JSONString returns the json encoded string

func (*EBlock) KeyMR 

func (e *EBlock) KeyMR() (interfaces.IHash, error)

KeyMR returns the hash of two items: 1) the hash of the Entry Block Header concatenated with 2) the Merkle Root of the Entry Block Body. The Body Merkle Root is calculated by the func (e *EBlockBody) MR() which is called by the func (e *EBlock) BuildHeader().

func (*EBlock) MarshalBinary 

func (e *EBlock) MarshalBinary() (rval []byte, err error)

MarshalBinary returns the serialized binary form of the Entry Block.

func (*EBlock) New 

func (e *EBlock) New() interfaces.BinaryMarshallableAndCopyable

New returns a new entry block

func (*EBlock) String 

func (e *EBlock) String() string

String returns the object as a string

func (*EBlock) UnmarshalBinary 

func (e *EBlock) UnmarshalBinary(data []byte) (err error)

UnmarshalBinary populates the Entry Block object from the serialized binary data.

func (*EBlock) UnmarshalBinaryData 

func (e *EBlock) UnmarshalBinaryData(data []byte) (newData []byte, err error)

UnmarshalBinaryData populates the Entry Block object from the serialized binary data.

type EBlockBody 

type EBlockBody struct {
	EBEntries []interfaces.IHash `json:"ebentries"` // Array of entries from a single chain id associated with this entry block
}

EBlockBody is the series of Hashes that form the Entry Block Body.

func NewEBlockBody 

func NewEBlockBody() *EBlockBody

NewEBlockBody initializes an empty Entry Block Body.

func (*EBlockBody) AddEBEntry 

func (e *EBlockBody) AddEBEntry(entry interfaces.IHash)

AddEBEntry creates a new Entry Block Entry from the provided Factom Entry and adds it to the Entry Block Body.

func (*EBlockBody) AddEndOfMinuteMarker 

func (e *EBlockBody) AddEndOfMinuteMarker(m byte)

AddEndOfMinuteMarker adds the End of Minute to the Entry Block. The End of Minut byte becomes the last byte in a 32 byte slice that is added to the Entry Block Body as an Entry Block Entry.

func (*EBlockBody) GetEBEntries 

func (e *EBlockBody) GetEBEntries() []interfaces.IHash

GetEBEntries returns the hash array associated with the entry block

func (*EBlockBody) IsSameAs 

func (e *EBlockBody) IsSameAs(b interfaces.IEBlockBody) bool

IsSameAs returns true iff th einput object is the same as this object

func (*EBlockBody) JSONByte 

func (e *EBlockBody) JSONByte() ([]byte, error)

JSONByte returns the json encoded byte array

func (*EBlockBody) JSONString 

func (e *EBlockBody) JSONString() (string, error)

JSONString returns the json encoded byte string

func (*EBlockBody) MR 

func (e *EBlockBody) MR() (rval interfaces.IHash)

MR calculates the Merkle Root of the Entry Block Body. See func primitives.BuildMerkleTreeStore(hashes []interfaces.IHash) (merkles []interfaces.IHash) in common/merkle.go.

func (*EBlockBody) String 

func (e *EBlockBody) String() string

String returns this object as a string

type EBlockHeader 

type EBlockHeader struct {
	ChainID      interfaces.IHash `json:"chainid"`      // The chain id associated with this entry block's entries (hash array)
	BodyMR       interfaces.IHash `json:"bodymr"`       // The Merkle root of the Entry block's entries (hash array)
	PrevKeyMR    interfaces.IHash `json:"prevkeymr"`    // The Merkle root of the previous entry block for this chain id
	PrevFullHash interfaces.IHash `json:"prevfullhash"` // The full hash of the previous entry block for this chain id
	EBSequence   uint32           `json:"ebsequence"`   // Entry block sequence number: ie 7 = the seventh entry block for this chain id
	DBHeight     uint32           `json:"dbheight"`     // The directory block height this entry block is located in
	EntryCount   uint32           `json:"entrycount"`   // How many entries are in the hash array for this entry block
}

EBlockHeader holds relevant metadata about the Entry Block and the data necessary to verify the previous block in the Entry Block Chain.

func NewEBlockHeader 

func NewEBlockHeader() *EBlockHeader

NewEBlockHeader initializes a new empty Entry Block Header.

func (*EBlockHeader) GetBodyMR 

func (e *EBlockHeader) GetBodyMR() (rval interfaces.IHash)

GetBodyMR returns the Merkle root of the entry blocks body (the hash array)

func (*EBlockHeader) GetChainID 

func (e *EBlockHeader) GetChainID() (rval interfaces.IHash)

GetChainID returns the chain id of this entry block

func (*EBlockHeader) GetDBHeight 

func (e *EBlockHeader) GetDBHeight() uint32

GetDBHeight returns the directory block height this entry block is from

func (*EBlockHeader) GetEBSequence 

func (e *EBlockHeader) GetEBSequence() uint32

GetEBSequence returns this entry block's sequence number

func (*EBlockHeader) GetEntryCount 

func (e *EBlockHeader) GetEntryCount() uint32

GetEntryCount returns the number of entries in this entry block

func (*EBlockHeader) GetPrevFullHash 

func (e *EBlockHeader) GetPrevFullHash() (rval interfaces.IHash)

GetPrevFullHash returns the previous entry blocks full hash associated with this chain id

func (*EBlockHeader) GetPrevKeyMR 

func (e *EBlockHeader) GetPrevKeyMR() (rval interfaces.IHash)

GetPrevKeyMR return the previous entry blocks Merkle root

func (*EBlockHeader) Init 

func (e *EBlockHeader) Init()

Init initializes the objects hashes to the zero hash if they are nil

func (*EBlockHeader) IsSameAs 

func (e *EBlockHeader) IsSameAs(b interfaces.IEntryBlockHeader) bool

IsSameAs returns true iff the input object is the same as this object

func (*EBlockHeader) JSONByte 

func (e *EBlockHeader) JSONByte() ([]byte, error)

JSONByte returns the json encoded byte array

func (*EBlockHeader) JSONString 

func (e *EBlockHeader) JSONString() (string, error)

JSONString returns the json encoded string

func (*EBlockHeader) MarshalBinary 

func (e *EBlockHeader) MarshalBinary() (rval []byte, err error)

MarshalBinary returns a serialized binary Entry Block Header

func (*EBlockHeader) SetBodyMR 

func (e *EBlockHeader) SetBodyMR(bodyMR interfaces.IHash)

SetBodyMR sets the body Merkle root to th einput value

func (*EBlockHeader) SetChainID 

func (e *EBlockHeader) SetChainID(chainID interfaces.IHash)

SetChainID sets the chain id associated with this entry block's entries

func (*EBlockHeader) SetDBHeight 

func (e *EBlockHeader) SetDBHeight(dbHeight uint32)

SetDBHeight sets the directory block height this entry block is from

func (*EBlockHeader) SetEBSequence 

func (e *EBlockHeader) SetEBSequence(sequence uint32)

SetEBSequence sets this entry block's sequence number

func (*EBlockHeader) SetEntryCount 

func (e *EBlockHeader) SetEntryCount(entryCount uint32)

SetEntryCount sets the number of entries in this entry block

func (*EBlockHeader) SetPrevFullHash 

func (e *EBlockHeader) SetPrevFullHash(prevFullHash interfaces.IHash)

SetPrevFullHash sets the previous entry blocks full hash associated with this chain id

func (*EBlockHeader) SetPrevKeyMR 

func (e *EBlockHeader) SetPrevKeyMR(prevKeyMR interfaces.IHash)

SetPrevKeyMR sets the previous entry block key Merkle root to the input value

func (*EBlockHeader) String 

func (e *EBlockHeader) String() string

String returns this object as a string

func (*EBlockHeader) UnmarshalBinary 

func (e *EBlockHeader) UnmarshalBinary(data []byte) (err error)

UnmarshalBinary builds the Entry Block Header from the serialized binary.

func (*EBlockHeader) UnmarshalBinaryData 

func (e *EBlockHeader) UnmarshalBinaryData(data []byte) ([]byte, error)

UnmarshalBinaryData builds the Entry Block Header from the serialized binary.

type Entry 

type Entry struct {
	Version uint8                  `json:"version"` // The entry version, only currently supported number is 0
	ChainID interfaces.IHash       `json:"chainid"` // The chain id associated with this entry
	ExtIDs  []primitives.ByteSlice `json:"extids"`  // External ids used to create the chain id above ( see ExternalIDsToChainID() )
	Content primitives.ByteSlice   `json:"content"` // BytesSlice for holding generic data for this entry
	// contains filtered or unexported fields
}

An Entry is the element which carries user data to be stored in the blockchain https://github.com/FactomProject/FactomDocs/blob/master/factomDataStructureDetails.md#entry

func NewEntry 

func NewEntry() *Entry

NewEntry returns a new entry initialized with empty interfaces and zero hashes

func (*Entry) DatabasePrimaryIndex 

func (c *Entry) DatabasePrimaryIndex() (rval interfaces.IHash)

DatabasePrimaryIndex returns the hash of the entry object

func (*Entry) DatabaseSecondaryIndex 

func (c *Entry) DatabaseSecondaryIndex() (rval interfaces.IHash)

DatabaseSecondaryIndex always returns nil (ie, no secondary index)

func (*Entry) ExternalIDs 

func (c *Entry) ExternalIDs() [][]byte

ExternalIDs returns an array of the external ids

func (*Entry) GetChainID 

func (c *Entry) GetChainID() (rval interfaces.IHash)

GetChainID returns the chain id of this entry

func (*Entry) GetChainIDHash 

func (c *Entry) GetChainIDHash() (rval interfaces.IHash)

GetChainIDHash returns the chain id associated with this entry

func (*Entry) GetContent 

func (c *Entry) GetContent() []byte

GetContent returns the content

func (*Entry) GetDatabaseHeight 

func (c *Entry) GetDatabaseHeight() uint32

GetDatabaseHeight always returns 0

func (*Entry) GetHash 

func (c *Entry) GetHash() (rval interfaces.IHash)

GetHash returns the hash of the entry: sha256(append(sha512(data),data))

func (*Entry) GetWeld 

func (c *Entry) GetWeld() []byte

GetWeld returns the double sha of the entry's hash and chain id appended ('welded') together

func (*Entry) GetWeldHash 

func (c *Entry) GetWeldHash() (rval interfaces.IHash)

GetWeldHash returns the doble sha of the entry's hash and chain id appended ('welded') together

func (*Entry) IsSameAs 

func (c *Entry) IsSameAs(b interfaces.IEBEntry) bool

IsSameAs returns true iff the input entry is identical to this entry

func (*Entry) IsValid 

func (c *Entry) IsValid() bool

IsValid checks whether an entry is considered valid. A valid entry must satisfy both conditions: 1) have version==0 AND 2) KSize() <= 10

func (*Entry) JSONByte 

func (c *Entry) JSONByte() ([]byte, error)

JSONByte returns the json encoded byte array

func (*Entry) JSONString 

func (c *Entry) JSONString() (string, error)

JSONString returns the json encoded string

func (*Entry) KSize 

func (c *Entry) KSize() int

KSize returns the size of the entry subject to payment in K. So anything up to 1K returns 1, everything up to and including 2K returns 2, etc. An error returns 100 (an invalid size)

func (*Entry) MarshalBinary 

func (c *Entry) MarshalBinary() (rval []byte, err error)

MarshalBinary marshals the object

func (*Entry) MarshalExtIDsBinary 

func (c *Entry) MarshalExtIDsBinary() (rval []byte, err error)

MarshalExtIDsBinary marshals the ExtIDs into a []byte containing a series of 2 byte size of each ExtID followed by the ExtID.

func (*Entry) New 

func (c *Entry) New() interfaces.BinaryMarshallableAndCopyable

New creates a new entry

func (*Entry) String 

func (c *Entry) String() string

String returns this object as a string

func (*Entry) UnmarshalBinary 

func (c *Entry) UnmarshalBinary(data []byte) (err error)

UnmarshalBinary unmarshals the input data into this object

func (*Entry) UnmarshalBinaryData 

func (c *Entry) UnmarshalBinaryData(data []byte) (_ []byte, err error)

UnmarshalBinaryData unmarshals the input data into this object

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