zebra_chain::chain_tip

Struct NoChainTip

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pub struct NoChainTip;
Expand description

A chain tip that is always empty and never changes.

Used in production for isolated network connections, and as a mock chain tip in tests.

Trait Implementations§

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impl ChainTip for NoChainTip

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async fn best_tip_changed(&mut self) -> Result<(), BoxError>

The NoChainTip best tip never changes, so this never returns.

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fn mark_best_tip_seen(&mut self)

The NoChainTip best tip never changes, so this does nothing.

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fn best_tip_height(&self) -> Option<Height>

Returns the height of the best chain tip. Read more
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fn best_tip_hash(&self) -> Option<Hash>

Returns the block hash of the best chain tip. Read more
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fn best_tip_height_and_hash(&self) -> Option<(Height, Hash)>

Returns the height and the hash of the best chain tip. Read more
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fn best_tip_block_time(&self) -> Option<DateTime<Utc>>

Returns the block time of the best chain tip. Read more
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fn best_tip_height_and_block_time(&self) -> Option<(Height, DateTime<Utc>)>

Returns the height and the block time of the best chain tip. Returning both values at the same time guarantees that they refer to the same chain tip. Read more
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fn best_tip_mined_transaction_ids(&self) -> Arc<[Hash]>

Returns the mined transaction IDs of the transactions in the best chain tip block. Read more
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fn estimate_network_chain_tip_height( &self, network: &Network, now: DateTime<Utc>, ) -> Option<Height>

Return an estimate of the network chain tip’s height. Read more
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fn estimate_distance_to_network_chain_tip( &self, network: &Network, ) -> Option<(HeightDiff, Height)>

Return an estimate of how many blocks there are ahead of Zebra’s best chain tip until the network chain tip, and Zebra’s best chain tip height. Read more
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impl Clone for NoChainTip

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fn clone(&self) -> NoChainTip

Returns a duplicate of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for NoChainTip

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

Formats the value using the given formatter. Read more
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impl PartialEq for NoChainTip

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fn eq(&self, other: &NoChainTip) -> bool

Tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl Copy for NoChainTip

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impl Eq for NoChainTip

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impl StructuralPartialEq for NoChainTip

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