40 lines
1.4 KiB
Rust
40 lines
1.4 KiB
Rust
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use bls::Hash256;
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use clap::ArgMatches;
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use clap_utils::{parse_optional, parse_required};
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use int_to_bytes::int_to_bytes32;
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use ssz::Encode;
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use std::fs::File;
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use std::io::Write;
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use std::time::{SystemTime, UNIX_EPOCH};
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use types::{EthSpec, ExecutionPayloadHeader};
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pub fn run<T: EthSpec>(matches: &ArgMatches) -> Result<(), String> {
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let eth1_block_hash = parse_required(matches, "execution-block-hash")?;
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let genesis_time = parse_optional(matches, "genesis-time")?.unwrap_or(
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SystemTime::now()
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.duration_since(UNIX_EPOCH)
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.map_err(|e| format!("Unable to get time: {:?}", e))?
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.as_secs(),
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);
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let base_fee_per_gas = Hash256::from_slice(&int_to_bytes32(parse_required(
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matches,
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"base-fee-per-gas",
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)?));
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let gas_limit = parse_required(matches, "gas-limit")?;
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let file_name = matches.value_of("file").ok_or("No file supplied")?;
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let execution_payload_header: ExecutionPayloadHeader<T> = ExecutionPayloadHeader {
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gas_limit,
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base_fee_per_gas,
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timestamp: genesis_time,
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block_hash: eth1_block_hash,
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random: eth1_block_hash,
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..ExecutionPayloadHeader::default()
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};
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let mut file = File::create(file_name).map_err(|_| "Unable to create file".to_string())?;
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let bytes = execution_payload_header.as_ssz_bytes();
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file.write_all(bytes.as_slice())
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.map_err(|_| "Unable to write to file".to_string())?;
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Ok(())
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}
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