Struct exonum::blockchain::Block

pub struct Block { /* fields omitted */ }

Exonum block header data structure.

Block is essentially a list of transactions, which is a result of the consensus algorithm (thus authenticated by the supermajority of validators) and is applied atomically to the blockchain state.

Header only contains the amount of transactions and the transactions root hash as well as other information, but not the transactions themselves.

Methods

impl Block

pub fn new(
    schema_version: u16,
    proposer_id: ValidatorId,
    height: Height,
    tx_count: u32,
    prev_hash: &Hash,
    tx_hash: &Hash,
    state_hash: &Hash
) -> Block

Creates a new instance with given parameters.

pub fn schema_version(&self) -> u16

Information schema version.

pub fn proposer_id(&self) -> ValidatorId

Block proposer id.

pub fn height(&self) -> Height

Height of the committed block

pub fn tx_count(&self) -> u32

Number of transactions in block.

pub fn prev_hash(&self) -> &Hash

Hash link to the previous block in blockchain.

pub fn tx_hash(&self) -> &Hash

Root hash of merkle tree of current block transactions.

pub fn state_hash(&self) -> &Hash

Hash of the current exonum state after applying transactions in the block.

Trait Implementations

impl Clone for Block

fn clone(&self) -> Block

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl PartialEq for Block

fn eq(&self, __arg_0: &Block) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, __arg_0: &Block) -> bool

This method tests for !=.

impl<'a> Field<'a> for Block

unsafe fn read(buffer: &'a [u8], from: Offset, to: Offset) -> Self

Read Field from buffer, with given position, beware of memory unsafety, you should check Field before read.

fn write(&self, buffer: &mut Vec<u8>, from: Offset, to: Offset)

Write Field to buffer, in given position write doesn't lead to memory unsafety.

fn check(
    buffer: &'a [u8],
    from_st_val: CheckedOffset,
    to_st_val: CheckedOffset,
    latest_segment: CheckedOffset
) -> Result

Checks if data in the buffer could be deserialized. Returns an index of latest data seen.

fn field_size() -> Offset

Field's header size

impl CryptoHash for Block

fn hash(&self) -> Hash

Returns a hash of the value.

impl StorageValue for Block

Important traits for Vec<u8>

impl Write for Vec<u8>

fn into_bytes(self) -> Vec<u8>

Serialize a value into a vector of bytes.

fn from_bytes(v: Cow<[u8]>) -> Self

Deserialize a value from bytes.

impl Debug for Block

fn fmt(&self, fmt: &mut Formatter) -> Result<(), Error>

Formats the value using the given formatter.

impl ExonumJson for Block

fn deserialize_field<B>(
    value: &Value,
    buffer: &mut B,
    from: Offset,
    to: Offset
) -> Result<(), Box<Error>> where
    B: WriteBufferWrapper, 

write deserialized field in buffer on place.

fn serialize_field(&self) -> Result<Value, Box<Error + Send + Sync>>

serialize field as json::Value

impl ExonumJsonDeserialize for Block

fn deserialize(value: &Value) -> Result<Self, Box<Error>>

deserialize json value.

impl<'de> Deserialize<'de> for Block

fn deserialize<D>(deserializer: D) -> Result<Self, D::Error> where
    D: Deserializer<'de>, 

Deserialize this value from the given Serde deserializer.

impl Serialize for Block

fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error> where
    S: Serializer, 

Serialize this value into the given Serde serializer.