71 lines
2.0 KiB
Rust
71 lines
2.0 KiB
Rust
//! Downloads a testnet configuration from Github.
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use reqwest;
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use std::env;
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use std::fs::File;
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use std::io::Write;
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use std::path::PathBuf;
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const TESTNET_ID: &str = "schlesi-v0-11";
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fn main() {
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if !base_dir().exists() {
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std::fs::create_dir_all(base_dir()).expect(&format!("Unable to create {:?}", base_dir()));
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match get_all_files() {
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Ok(()) => (),
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Err(e) => {
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std::fs::remove_dir_all(base_dir()).expect(&format!(
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"{}. Failed to remove {:?}, please remove the directory manually because it may contains incomplete testnet data.",
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e,
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base_dir(),
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));
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panic!(e);
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}
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}
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}
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}
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pub fn get_all_files() -> Result<(), String> {
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get_file("boot_enr.yaml")?;
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get_file("config.yaml")?;
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get_file("deploy_block.txt")?;
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get_file("deposit_contract.txt")?;
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get_file("genesis.ssz")?;
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Ok(())
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}
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pub fn get_file(filename: &str) -> Result<(), String> {
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let url = format!(
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"https://raw.githubusercontent.com/goerli/schlesi/839866fe29a1b4df3a87bfe2ff1257c8a58671c9/light/{}",
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filename
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);
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let path = base_dir().join(filename);
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let mut file =
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File::create(path).map_err(|e| format!("Failed to create {}: {:?}", filename, e))?;
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let mut response = reqwest::get(&url)
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.map_err(|e| format!("Failed to download {}: {}", filename, e))?
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.error_for_status()
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.map_err(|e| format!("Error downloading {}: {}", filename, e))?;
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let mut contents: Vec<u8> = vec![];
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response
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.copy_to(&mut contents)
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.map_err(|e| format!("Failed to read {} response bytes: {}", filename, e))?;
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file.write(&contents)
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.map_err(|e| format!("Failed to write to {}: {:?}", filename, e))?;
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Ok(())
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}
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fn base_dir() -> PathBuf {
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env::var("CARGO_MANIFEST_DIR")
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.expect("should know manifest dir")
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.parse::<PathBuf>()
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.expect("should parse manifest dir as path")
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.join(TESTNET_ID)
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}
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