|
| 1 | +//! Command Line handler to convert Beacon block's execution payload to Execution format. |
| 2 | +
|
| 3 | +use std::path::PathBuf; |
| 4 | + |
| 5 | +use alloy_rpc_types_beacon::payload::BeaconBlockData; |
| 6 | +use clap::{Parser, builder::ValueParser}; |
| 7 | +use eyre::{Result, eyre}; |
| 8 | +use foundry_common::{fs, sh_print}; |
| 9 | + |
| 10 | +/// CLI arguments for `cast b2e-payload`, convert Beacon block's execution payload to Execution |
| 11 | +/// format. |
| 12 | +#[derive(Parser)] |
| 13 | +pub struct B2EPayloadArgs { |
| 14 | + /// Input data, it can be either a file path to JSON file or raw JSON string containing the |
| 15 | + /// beacon block |
| 16 | + #[arg(value_name = "INPUT", value_parser=ValueParser::new(parse_input_source), help = "File path to JSON file or raw JSON string containing the beacon block")] |
| 17 | + pub input: InputSource, |
| 18 | +} |
| 19 | + |
| 20 | +impl B2EPayloadArgs { |
| 21 | + pub async fn run(self) -> Result<()> { |
| 22 | + let beacon_block_json = match self.input { |
| 23 | + InputSource::Json(json) => json, |
| 24 | + InputSource::File(path) => fs::read_to_string(&path) |
| 25 | + .map_err(|e| eyre!("Failed to read JSON file '{}': {}", path.display(), e))?, |
| 26 | + }; |
| 27 | + |
| 28 | + let beacon_block_data: BeaconBlockData = serde_json::from_str(&beacon_block_json) |
| 29 | + .map_err(|e| eyre!("Failed to parse beacon block JSON: {}", e))?; |
| 30 | + |
| 31 | + let execution_payload = beacon_block_data.execution_payload(); |
| 32 | + |
| 33 | + // Output raw execution payload |
| 34 | + let output = serde_json::to_string(&execution_payload) |
| 35 | + .map_err(|e| eyre!("Failed to serialize execution payload: {}", e))?; |
| 36 | + sh_print!("{}", output)?; |
| 37 | + |
| 38 | + Ok(()) |
| 39 | + } |
| 40 | +} |
| 41 | + |
| 42 | +/// Represents the different input sources for beacon block data |
| 43 | +#[derive(Debug, Clone)] |
| 44 | +pub enum InputSource { |
| 45 | + /// Path to a JSON file containing beacon block data |
| 46 | + File(PathBuf), |
| 47 | + /// Raw JSON string containing beacon block data |
| 48 | + Json(String), |
| 49 | +} |
| 50 | + |
| 51 | +fn parse_input_source(s: &str) -> Result<InputSource, String> { |
| 52 | + // Try parsing as JSON first |
| 53 | + if serde_json::from_str::<serde_json::Value>(s).is_ok() { |
| 54 | + return Ok(InputSource::Json(s.to_string())); |
| 55 | + } |
| 56 | + |
| 57 | + // Otherwise treat as file path |
| 58 | + Ok(InputSource::File(PathBuf::from(s))) |
| 59 | +} |
| 60 | + |
| 61 | +#[cfg(test)] |
| 62 | +mod tests { |
| 63 | + use super::*; |
| 64 | + |
| 65 | + #[test] |
| 66 | + fn test_parse_input_source_json_object() { |
| 67 | + let json_input = r#"{"execution_payload": {"block_hash": "0x123"}}"#; |
| 68 | + let result = parse_input_source(json_input).unwrap(); |
| 69 | + |
| 70 | + match result { |
| 71 | + InputSource::Json(json) => assert_eq!(json, json_input), |
| 72 | + InputSource::File(_) => panic!("Expected JSON input, got File"), |
| 73 | + } |
| 74 | + } |
| 75 | + |
| 76 | + #[test] |
| 77 | + fn test_parse_input_source_json_array() { |
| 78 | + let json_input = r#"[{"block": "data"}]"#; |
| 79 | + let result = parse_input_source(json_input).unwrap(); |
| 80 | + |
| 81 | + match result { |
| 82 | + InputSource::Json(json) => assert_eq!(json, json_input), |
| 83 | + InputSource::File(_) => panic!("Expected JSON input, got File"), |
| 84 | + } |
| 85 | + } |
| 86 | + |
| 87 | + #[test] |
| 88 | + fn test_parse_input_source_file_path() { |
| 89 | + let file_path = |
| 90 | + "block-12225729-6ceadbf2a6adbbd64cbec33fdebbc582f25171cd30ac43f641cbe76ac7313ddf.json"; |
| 91 | + let result = parse_input_source(file_path).unwrap(); |
| 92 | + |
| 93 | + match result { |
| 94 | + InputSource::File(path) => assert_eq!(path, PathBuf::from(file_path)), |
| 95 | + InputSource::Json(_) => panic!("Expected File input, got JSON"), |
| 96 | + } |
| 97 | + } |
| 98 | + |
| 99 | + #[test] |
| 100 | + fn test_parse_input_source_malformed_but_not_json() { |
| 101 | + let malformed = "not-json-{"; |
| 102 | + let result = parse_input_source(malformed).unwrap(); |
| 103 | + |
| 104 | + // Should be treated as file path since it's not valid JSON |
| 105 | + match result { |
| 106 | + InputSource::File(path) => assert_eq!(path, PathBuf::from(malformed)), |
| 107 | + InputSource::Json(_) => panic!("Expected File input, got File"), |
| 108 | + } |
| 109 | + } |
| 110 | +} |
0 commit comments