pub struct MessageQueueChain(_);
Expand description
This struct provides ability to extend a message queue chain (MQC) and compute a new head.
MQC is an instance of a hash chain applied to a message queue. Using a hash chain it’s possible to represent a sequence of messages using only a single hash.
A head for an empty chain is agreed to be a zero hash.
An instance is used to track either DMP from the relay chain or HRMP across a channel.
But a given instance is never used to track both. Therefore, you should call either
extend_downward
or extend_hrmp
, but not both methods on a single instance.
Implementations§
source§impl MessageQueueChain
impl MessageQueueChain
sourcepub fn extend_hrmp(
&mut self,
horizontal_message: &InboundHrmpMessage
) -> &mut Self
pub fn extend_hrmp( &mut self, horizontal_message: &InboundHrmpMessage ) -> &mut Self
Extend the hash chain with an HRMP message. This method should be used only when this chain is tracking HRMP.
sourcepub fn extend_downward(
&mut self,
downward_message: &InboundDownwardMessage
) -> &mut Self
pub fn extend_downward( &mut self, downward_message: &InboundDownwardMessage ) -> &mut Self
Extend the hash chain with a downward message. This method should be used only when this chain is tracking DMP.
Trait Implementations§
source§impl Clone for MessageQueueChain
impl Clone for MessageQueueChain
source§fn clone(&self) -> MessageQueueChain
fn clone(&self) -> MessageQueueChain
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source
. Read moresource§impl Decode for MessageQueueChain
impl Decode for MessageQueueChain
source§fn decode<__CodecInputEdqy: Input>(
__codec_input_edqy: &mut __CodecInputEdqy
) -> Result<Self, Error>
fn decode<__CodecInputEdqy: Input>( __codec_input_edqy: &mut __CodecInputEdqy ) -> Result<Self, Error>
§fn decode_into<I>(
input: &mut I,
dst: &mut MaybeUninit<Self>
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I: Input,
fn decode_into<I>( input: &mut I, dst: &mut MaybeUninit<Self> ) -> Result<DecodeFinished, Error>where I: Input,
§fn skip<I>(input: &mut I) -> Result<(), Error>where
I: Input,
fn skip<I>(input: &mut I) -> Result<(), Error>where I: Input,
§fn encoded_fixed_size() -> Option<usize>
fn encoded_fixed_size() -> Option<usize>
source§impl Default for MessageQueueChain
impl Default for MessageQueueChain
source§fn default() -> MessageQueueChain
fn default() -> MessageQueueChain
source§impl Encode for MessageQueueChain
impl Encode for MessageQueueChain
source§fn size_hint(&self) -> usize
fn size_hint(&self) -> usize
source§fn encode_to<__CodecOutputEdqy: Output + ?Sized>(
&self,
__codec_dest_edqy: &mut __CodecOutputEdqy
)
fn encode_to<__CodecOutputEdqy: Output + ?Sized>( &self, __codec_dest_edqy: &mut __CodecOutputEdqy )
source§fn using_encoded<R, F: FnOnce(&[u8]) -> R>(&self, f: F) -> R
fn using_encoded<R, F: FnOnce(&[u8]) -> R>(&self, f: F) -> R
§fn encoded_size(&self) -> usize
fn encoded_size(&self) -> usize
source§impl TypeInfo for MessageQueueChain
impl TypeInfo for MessageQueueChain
impl EncodeLike<MessageQueueChain> for MessageQueueChain
Auto Trait Implementations§
impl RefUnwindSafe for MessageQueueChain
impl Send for MessageQueueChain
impl Sync for MessageQueueChain
impl Unpin for MessageQueueChain
impl UnwindSafe for MessageQueueChain
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