BlockExtrinsicsQuery

avail_rust_client::block::extrinsic

Struct BlockExtrinsicsQuery 

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pub struct BlockExtrinsicsQuery { /* private fields */ }
Expand description

View of block extrinsics decoded into calls and optional signatures.

Implementations§

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impl BlockExtrinsicsQuery

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pub fn new(client: Client, block_id: HashStringNumber) -> Self

Builds a decoded extrinsic view for the specified block.

§Parameters
  • client: RPC client used to fetch encoded extrinsics before decoding.
  • block_id: Identifier convertible into HashStringNumber.
§Returns
  • Self: Helper that decodes extrinsics on demand.
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pub async fn get<T: HasHeader + Decode>( &self, extrinsic_id: impl Into<HashStringNumber>, ) -> Result<Option<BlockExtrinsic<T>>, Error>

Fetches a specific extrinsic by hash, index, or string identifier.

§Parameters
  • extrinsic_id: Identifier used to select the extrinsic.
§Returns
  • Ok(Some(Extrinsic<T>)): Matching extrinsic decoded as T.
  • Ok(None): No extrinsic matched the identifier.
  • Err(Error): Identifier decoding, the RPC call, or payload decoding failed.
§Side Effects
  • Performs RPC calls via the encoded-extrinsic helper and may retry according to the retry policy.
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pub async fn first<T: HasHeader + Decode>( &self, opts: Options, ) -> Result<Option<BlockExtrinsic<T>>, Error>

Returns the first extrinsic that matches the supplied filters.

§Parameters
  • opts: Filters describing which extrinsic to fetch.
§Returns
  • Ok(Some(Extrinsic<T>)): First matching extrinsic decoded as T.
  • Ok(None): No extrinsic satisfied the filters.
  • Err(Error): The RPC call or payload decoding failed.
§Side Effects
  • Performs RPC calls via the encoded-extrinsic helper and may retry according to the retry policy.
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pub async fn last<T: HasHeader + Decode>( &self, opts: Options, ) -> Result<Option<BlockExtrinsic<T>>, Error>

Returns the last extrinsic that matches the supplied filters.

§Parameters
  • opts: Filters describing which extrinsic to fetch.
§Returns
  • Ok(Some(Extrinsic<T>)): Final matching extrinsic decoded as T.
  • Ok(None): No extrinsic satisfied the filters.
  • Err(Error): The RPC call or payload decoding failed.
§Side Effects
  • Performs RPC calls via the encoded-extrinsic helper and may retry according to the retry policy.
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pub async fn all<T: HasHeader + Decode>( &self, opts: Options, ) -> Result<Vec<BlockExtrinsic<T>>, Error>

Collects every extrinsic that matches the supplied filters.

§Parameters
  • opts: Filters describing which extrinsics to decode.
§Returns
  • Ok(Vec<Extrinsic<T>>): Zero or more matching extrinsics decoded as T.
  • Err(Error): The RPC call or payload decoding failed.
§Side Effects
  • Performs RPC calls via the encoded-extrinsic helper and may retry according to the retry policy.
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pub async fn count<T: HasHeader>(&self, opts: Options) -> Result<usize, Error>

Counts matching extrinsics without decoding their payloads.

§Parameters
  • opts: Filters describing which extrinsics to count.
§Returns
  • Ok(usize): Number of matching extrinsics.
  • Err(Error): The RPC call failed.
§Side Effects
  • Performs RPC calls via the encoded-extrinsic helper and may retry according to the retry policy.
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pub async fn exists<T: HasHeader>(&self, opts: Options) -> Result<bool, Error>

Reports whether any extrinsic matches the supplied filters.

§Parameters
  • opts: Filters describing which extrinsics to test.
§Returns
  • Ok(true): At least one matching extrinsic exists.
  • Ok(false): No extrinsics matched the filters.
  • Err(Error): The RPC call failed.
§Side Effects
  • Performs RPC calls via the encoded-extrinsic helper and may retry according to the retry policy.
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pub fn set_retry_on_error(&mut self, value: Option<bool>)

Overrides the retry behaviour for future decoded-extrinsic lookups.

§Parameters
  • value: Some(true) to force retries, Some(false) to disable retries, None to inherit the client default.
§Returns
  • (): The override is stored for subsequent operations.
§Side Effects
  • Updates the internal retry setting used by follow-up RPC calls.
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pub fn should_retry_on_error(&self) -> bool

Reports whether decoded-extrinsic lookups retry after RPC errors.

§Returns
  • true: Retries are enabled either explicitly or via the client default.
  • false: Retries are disabled.

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