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solana-with-rpc-optimizations
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block-production subcommand now uses SlotHistory sysvar when possible

This commit is contained in:
Michael Vines 2021-04-26 11:43:40 -07:00
parent 3af8cb0150
commit b66a68975b
1 changed files with 51 additions and 24 deletions
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75
cli/src/cluster_query.rs
View File

@ -46,9 +46,10 @@ use solana_sdk::{
rent::Rent,
rpc_port::DEFAULT_RPC_PORT_STR,
signature::Signature,
system_instruction, system_program,
slot_history, system_instruction, system_program,
sysvar::{
self,
slot_history::SlotHistory,
stake_history::{self},
},
timing,
@ -1119,8 +1120,6 @@ pub fn process_show_block_production(
return Err(format!("Epoch {} is in the future", epoch).into());
}
let minimum_ledger_slot = rpc_client.minimum_ledger_slot()?;
let first_slot_in_epoch = epoch_schedule.get_first_slot_in_epoch(epoch);
let end_slot = std::cmp::min(
epoch_info.absolute_slot,
@ -1133,32 +1132,60 @@ pub fn process_show_block_production(
first_slot_in_epoch
};
if minimum_ledger_slot > end_slot {
return Err(format!(
"Ledger data not available for slots {} to {} (minimum ledger slot is {})",
start_slot, end_slot, minimum_ledger_slot
)
.into());
}
if minimum_ledger_slot > start_slot {
println!(
"\n{}",
style(format!(
"Note: Requested start slot was {} but minimum ledger slot is {}",
start_slot, minimum_ledger_slot
))
.italic(),
);
start_slot = minimum_ledger_slot;
}
let progress_bar = new_spinner_progress_bar();
progress_bar.set_message(&format!(
"Fetching confirmed blocks between slots {} and {}...",
start_slot, end_slot
));
let confirmed_blocks = rpc_client.get_blocks(start_slot, Some(end_slot))?;
let slot_history_account = rpc_client
.get_account_with_commitment(&sysvar::slot_history::id(), CommitmentConfig::finalized())?
.value
.unwrap();
let slot_history: SlotHistory = from_account(&slot_history_account).ok_or_else(|| {
CliError::RpcRequestError("Failed to deserialize slot history".to_string())
})?;
let (confirmed_blocks, start_slot) =
if start_slot >= slot_history.oldest() && end_slot <= slot_history.newest() {
// Fast, more reliable path using the SlotHistory sysvar
let confirmed_blocks: Vec<_> = (start_slot..=end_slot)
.filter(|slot| slot_history.check(*slot) == slot_history::Check::Found)
.collect();
(confirmed_blocks, start_slot)
} else {
// Slow, less reliable path using `getBlocks`.
//
// "less reliable" because if the RPC node has holds in its ledger then the block production data will be
// incorrect. This condition currently can't be detected over RPC
//
let minimum_ledger_slot = rpc_client.minimum_ledger_slot()?;
if minimum_ledger_slot > end_slot {
return Err(format!(
"Ledger data not available for slots {} to {} (minimum ledger slot is {})",
start_slot, end_slot, minimum_ledger_slot
)
.into());
}
if minimum_ledger_slot > start_slot {
progress_bar.println(format!(
"{}",
style(format!(
"Note: Requested start slot was {} but minimum ledger slot is {}",
start_slot, minimum_ledger_slot
))
.italic(),
));
start_slot = minimum_ledger_slot;
}
let confirmed_blocks = rpc_client.get_blocks(start_slot, Some(end_slot))?;
(confirmed_blocks, start_slot)
};
let start_slot_index = (start_slot - first_slot_in_epoch) as usize;
let end_slot_index = (end_slot - first_slot_in_epoch) as usize;