BlockEventsSub

avail_rust_client::subscription::block

Struct BlockEventsSub 

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

Subscription wrapper that streams BlockPhaseEvent lists.

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impl BlockEventsSub

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pub fn new(client: Client, opts: EventOpts) -> Self

Creates a subscription that yields event batches filtered by the supplied options. No network calls are made until BlockEventsSub::next is awaited.

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pub async fn next(&mut self) -> Result<BlockEventsSubValue, Error>

Fetches the next block with matching events; rewinds on RPC failure.

§Returns
  • Ok(BlockEventsSubResult) when events matching the configured filters are found.
  • Err(crate::Error) when the RPC request fails; the internal cursor rewinds so the block can be retried.

Empty event lists are skipped automatically.

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pub fn set_options(&mut self, value: EventOpts)

Replaces the filter options applied to subsequent next calls.

§Arguments
  • value - New event filtering options supplied to the RPC query.
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pub fn should_retry_on_error(&self) -> bool

Reports whether failed RPC calls will be retried.

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pub fn use_best_block(&mut self, value: bool)

Follow best blocks instead of finalized ones.

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pub fn set_block_height(&mut self, block_height: u32)

Jump the cursor to a specific starting height.

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

Change how often the subscription polls for new blocks when following the head.

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

Override the retry behaviour (Some(true) = force, Some(false) = disable).

Trait Implementations§

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impl Clone for BlockEventsSub

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fn clone(&self) -> BlockEventsSub

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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