Struct exonum::messages::Propose
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pub struct Propose { /* fields omitted */ }
Proposal for a new block.
Validation
The message is ignored if it
* contains incorrect prev_hash
* is sent by non-leader
* contains already committed transactions
* is already known
Processing
If the message contains unknown transactions, then TransactionsRequest
is sent in reply. Otherwise Prevote
is broadcast.
Generation
A node broadcasts Propose
if it is a leader and is not locked for a
different proposal. Also Propose
can be sent as response to
ProposeRequest
.
Methods
impl Propose
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pub fn new(
validator: ValidatorId,
height: Height,
round: Round,
prev_hash: &Hash,
transactions: &[Hash],
secret_key: &SecretKey
) -> Propose
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validator: ValidatorId,
height: Height,
round: Round,
prev_hash: &Hash,
transactions: &[Hash],
secret_key: &SecretKey
) -> Propose
Creates message and signs it.
pub fn new_with_signature(
validator: ValidatorId,
height: Height,
round: Round,
prev_hash: &Hash,
transactions: &[Hash],
signature: &Signature
) -> Propose
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validator: ValidatorId,
height: Height,
round: Round,
prev_hash: &Hash,
transactions: &[Hash],
signature: &Signature
) -> Propose
Creates message and appends existing signature.
pub fn to_hex(&self) -> String
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Returns the hex representation of the binary data. Lower case letters are used (e.g. f9b4ca).
pub fn validator(&self) -> ValidatorId
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The validator id.
pub fn height(&self) -> Height
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The height to which the message is related.
pub fn round(&self) -> Round
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The round to which the message is related.
pub fn prev_hash(&self) -> &Hash
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Hash of the previous block.
pub fn transactions(&self) -> &[Hash]
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The list of transactions to include in the next block.
Trait Implementations
impl Clone for Propose
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fn clone(&self) -> Propose
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Returns a copy of the value. Read more
fn clone_from(&mut self, source: &Self)
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Performs copy-assignment from source
. Read more
impl PartialEq for Propose
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fn eq(&self, __arg_0: &Propose) -> bool
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This method tests for self
and other
values to be equal, and is used by ==
. Read more
fn ne(&self, __arg_0: &Propose) -> bool
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This method tests for !=
.
impl ServiceMessage for Propose
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const SERVICE_ID: u16
SERVICE_ID: u16 = CONSENSUS
ID of the service this message belongs to.
const MESSAGE_ID: u16
MESSAGE_ID: u16 = 0 + 1 + 1
ID of the message itself. Should be unique within a service. Read more
impl Message for Propose
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fn from_raw(raw: RawMessage) -> Result<Propose, Error>
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Converts the raw message into the specific one.
fn raw(&self) -> &RawMessage
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Returns raw message.
fn verify_signature(&self, pub_key: &PublicKey) -> bool
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Verifies the message using given public key.
impl<'a> SegmentField<'a> for Propose
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fn item_size() -> Offset
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size of item fixed part that this Field
collect.
fn count(&self) -> Offset
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count of items in collection
fn extend_buffer(&self, buffer: &mut Vec<u8>)
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extend buffer with this collection
unsafe fn from_buffer(buffer: &'a [u8], from: Offset, count: Offset) -> Self
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create collection from buffer
fn check_data(
buffer: &'a [u8],
from: CheckedOffset,
count: CheckedOffset,
latest_segment: CheckedOffset
) -> Result
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buffer: &'a [u8],
from: CheckedOffset,
count: CheckedOffset,
latest_segment: CheckedOffset
) -> Result
check collection data
impl AsRef<RawMessage> for Propose
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fn as_ref(&self) -> &RawMessage
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Performs the conversion.
impl FromHex for Propose
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type Error = Error
fn from_hex<T: AsRef<[u8]>>(hex: T) -> Result<Self, Self::Error>
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Creates an instance of type Self
from the given hex string, or fails with a custom error type. Read more
impl StorageValue for Propose
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fn into_bytes(self) -> Vec<u8>
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Serialize a value into a vector of bytes.
fn from_bytes(value: Cow<[u8]>) -> Self
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Deserialize a value from bytes.
impl Debug for Propose
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fn fmt(&self, fmt: &mut Formatter) -> Result<(), Error>
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Formats the value using the given formatter. Read more
impl ExonumJson for Propose
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fn deserialize_field<B>(
value: &Value,
buffer: &mut B,
from: Offset,
to: Offset
) -> Result<(), Box<Error>> where
B: WriteBufferWrapper,
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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>>
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serialize field as json::Value
impl ExonumJsonDeserialize for Propose
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impl<'de> Deserialize<'de> for Propose
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fn deserialize<D>(deserializer: D) -> Result<Self, D::Error> where
D: Deserializer<'de>,
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D: Deserializer<'de>,
Deserialize this value from the given Serde deserializer. Read more