Struct BlockEncodedExtrinsic 

pub struct BlockEncodedExtrinsic {
    pub signature: Option<ExtrinsicSignature>,
    pub call: Vec<u8>,
    pub metadata: BlockExtrinsicMetadata,
}

Encoded extrinsic payload paired with signature and metadata helpers.

Fields

signature: Option<ExtrinsicSignature>

Optional signature associated with the extrinsic.

call: Vec<u8>

Encoded runtime call payload.

metadata: BlockExtrinsicMetadata

Metadata describing where the extrinsic was found.

Implementations

impl BlockEncodedExtrinsic

pub fn new( signature: Option<ExtrinsicSignature>, call: Vec<u8>, metadata: BlockExtrinsicMetadata, ) -> Self

Creates an encoded extrinsic wrapper.

Arguments

• signature - Optional signature shipped alongside the payload.
• call - SCALE-encoded call bytes.
• metadata - Metadata identifying where the extrinsic resides.

Returns

Returns a wrapper that exposes convenience accessors.

pub async fn events(&self, client: Client) -> Result<BlockEvents, Error>

Fetches events emitted by this extrinsic.

Parameters

• client: RPC client used to fetch event data.

Returns

• Ok(AllEvents): Wrapper containing events for this extrinsic.
• Err(Error): Extrinsic emitted no events or the RPC request failed.

Side Effects

• Issues RPC requests for event data and may retry according to the client’s configuration.

pub fn ext_index(&self) -> u32

Returns the index of this extrinsic inside the block.

Returns

• u32: Index of the extrinsic within the block.

pub fn ext_hash(&self) -> H256

Returns the extrinsic hash.

Returns

• H256: Hash of the extrinsic.

pub fn app_id(&self) -> Option<u32>

Returns the application id if the signer payload provided it.

Returns

• Some(u32): Application identifier from the signer payload.
• None: Signer payload was absent.

pub fn nonce(&self) -> Option<u32>

Returns the nonce if the signer payload provided it.

Returns

• Some(u32): Nonce from the signer payload.
• None: Signer payload was absent.

pub fn tip(&self) -> Option<u128>

Returns the tip if the extrinsic was signed.

Returns

• Some(u128): Tip reported by the signature.
• None: Extrinsic was unsigned.

pub fn ss58_address(&self) -> Option<String>

Returns the ss58 address if the signer payload provided it.

Returns

• Some(String): SS58 address supplied by the signer payload.
• None: Signer payload was absent.

pub fn as_extrinsic<T: HasHeader + Decode>( self, ) -> Result<BlockExtrinsic<T>, Error>

Converts the encoded extrinsic into a decoded extrinsic wrapper.

Returns

• Ok(Extrinsic<T>): Decoded extrinsic containing the call and metadata.
• Err(String): Payload failed to decode as T.

pub fn as_signed<T: HasHeader + Decode>( self, ) -> Result<BlockSignedExtrinsic<T>, Error>

Converts the encoded extrinsic into a signed variant when possible.

Returns

• Ok(SignedExtrinsic<T>): Signed extrinsic decoded from the encoded payload.
• Err(String): The extrinsic was unsigned or failed to decode as T.

pub fn is<T: HasHeader>(&self) -> bool

Checks whether the encoded extrinsic matches the header index for T.

Returns

• true: The extrinsic matches T::HEADER_INDEX.
• false: The header indices differ.

pub fn header(&self) -> (u8, u8)

Returns the pallet and variant identifiers stored in the metadata.

Returns

• (u8, u8): Tuple containing (pallet_id, variant_id).

pub fn from_extrinsic_info( info: &ExtrinsicInfo, block_id: HashNumber, ) -> Result<Self, Error>

Constructs an encoded extrinsic wrapper from RPC metadata.

Arguments

• info - RPC response describing the extrinsic.
• block_id - Block identifier in which the extrinsic resides.

Returns

Returns the encoded extrinsic wrapper or an error if payload data was missing or invalid.

Trait Implementations

impl Clone for BlockEncodedExtrinsic

fn clone(&self) -> BlockEncodedExtrinsic

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for BlockEncodedExtrinsic

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<T: HasHeader + Decode> TryFrom<&BlockEncodedExtrinsic> for BlockExtrinsic<T>

fn try_from(value: &BlockEncodedExtrinsic) -> Result<Self, Self::Error>

Decodes a borrowed encoded extrinsic into an Extrinsic<T>.

Parameters

• value: Borrowed encoded extrinsic containing the SCALE payload.

Returns

• Ok(Self): Decoded extrinsic with optional signature and cloned metadata.
• Err(String): Payload failed to decode as T.

type Error = String

The type returned in the event of a conversion error.

impl<T: HasHeader + Decode> TryFrom<&BlockEncodedExtrinsic> for BlockSignedExtrinsic<T>

fn try_from(value: &BlockEncodedExtrinsic) -> Result<Self, Self::Error>

Decodes a borrowed encoded extrinsic into a signed extrinsic.

Parameters

• value: Borrowed encoded extrinsic expected to contain a signature.

Returns

• Ok(Self): Signed extrinsic decoded from the payload.
• Err(String): Decoding failed or the extrinsic was unsigned.

type Error = String

The type returned in the event of a conversion error.

impl<T: HasHeader + Decode> TryFrom<BlockEncodedExtrinsic> for BlockExtrinsic<T>

fn try_from(value: BlockEncodedExtrinsic) -> Result<Self, Self::Error>

Decodes an encoded extrinsic into an Extrinsic<T>.

Parameters

• value: Encoded extrinsic containing the SCALE payload.

Returns

• Ok(Self): Decoded extrinsic with optional signature and metadata.
• Err(String): Payload failed to decode as T.

type Error = String

The type returned in the event of a conversion error.

impl<T: HasHeader + Decode> TryFrom<BlockEncodedExtrinsic> for BlockSignedExtrinsic<T>

fn try_from(value: BlockEncodedExtrinsic) -> Result<Self, Self::Error>

Decodes an encoded extrinsic into a signed extrinsic.

Parameters

• value: Encoded extrinsic expected to contain a signature.

Returns

• Ok(Self): Signed extrinsic decoded from the payload.
• Err(String): Decoding failed or the extrinsic was unsigned.

type Error = String

The type returned in the event of a conversion error.