Description
When the VC attempts to publish a sync committee signature it will try and get the head block root from the first BN that returns a response, regardless if that BN is optimistic or not:
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// Fetch `block_root` and `execution_optimistic` for `SyncCommitteeContribution`. |
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let response = self |
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.beacon_nodes |
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.first_success(RequireSynced::Yes, OfflineOnFailure::Yes,|beacon_node| async move { |
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beacon_node.get_beacon_blocks_root(BlockId::Head).await |
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}) |
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.await |
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.map_err(|e| e.to_string())? |
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.ok_or_else(|| format!("No block root found for slot {}", slot))?; |
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|
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let block_root = response.data.root; |
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if let Some(execution_optimistic) = response.execution_optimistic { |
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if execution_optimistic { |
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warn!( |
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log, |
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"Refusing to sign sync committee messages for optimistic head block"; |
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"slot" => slot, |
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); |
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return Ok(()); |
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} |
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} else if let Some(bellatrix_fork_epoch) = self.duties_service.spec.bellatrix_fork_epoch { |
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// If the slot is post Bellatrix, do not sign messages when we cannot verify the |
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// optimistic status of the head block. |
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if slot.epoch(E::slots_per_epoch()) > bellatrix_fork_epoch { |
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warn!( |
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log, |
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"Refusing to sign sync committee messages for a head block with an unknown \ |
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optimistic status"; |
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"slot" => slot, |
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); |
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return Ok(()); |
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} |
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} |
I think the ideal behaviour would be trying to find a BN that has a non-optimistic head block root. At first glance I think this would be pretty easy to achieve by pushing the execution_optimistic checks inside the first_success function.
