GrandpaJustificationSub

avail_rust_client::subscription::justification

Struct GrandpaJustificationSub 

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

Streams decoded GRANDPA justifications while handling retries and cursor management.

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impl GrandpaJustificationSub

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pub fn new(client: Client) -> Self

Creates a subscription that yields decoded GRANDPA justifications.

The client is cloned; no network calls are made until GrandpaJustificationSub::next is awaited.

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pub async fn next(&mut self) -> Result<GrandpaJustification, RpcError>

Fetches the next available justification; rewinds on RPC failure and skips blanks.

§Returns
  • Ok(GrandpaJustification) when a justification is retrieved for the current cursor.
  • Err(RpcError) when the RPC request fails. The internal block height rewinds so the same block is retried on the next call.
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pub fn set_block_height(&mut self, block_height: u32)

Jump the cursor to a specific starting height. The next call to GrandpaJustificationSub::next examines this height first.

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pub fn set_pool_rate(&mut self, value: Duration)

Change how often the subscription polls for new justifications when tailing the head.

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pub fn set_retry_on_error(&mut self, value: Option<bool>)

Controls retry behaviour for subsequent RPC calls (Some(true) = force, Some(false) = disable, None = inherit client default).

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pub fn should_retry_on_error(&self) -> bool

Returns true when this stream retries failed justification RPC calls.

Trait Implementations§

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impl Clone for GrandpaJustificationSub

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fn clone(&self) -> GrandpaJustificationSub

Returns a duplicate of the value. Read more
1.0.0 · Source§

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

Performs copy-assignment from source. Read more

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