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feat(cast): cache Etherscan sources under Foundry cache with temp fallback #12025

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feat(cast): cache Etherscan sources under Foundry cache with temp fallback #12025

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03a9a39
feat(cast): cache Etherscan sources under Foundry cache with temp fal…
sashass1315 Oct 8, 2025
886a45d
Merge branch 'master' into feat/cast-storage-etherscan-sources-cache
sashass1315 Oct 9, 2025
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24 changes: 16 additions & 8 deletions crates/cast/src/cmd/storage.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -159,11 +159,22 @@ impl StorageArgs {
eyre::bail!("Contract at provided address is not a valid Solidity contract")
}

// Create a new temp project
// TODO: Cache instead of using a temp directory: metadata from Etherscan won't change
let root = tempfile::tempdir()?;
let root_path = root.path();
let mut project = etherscan_project(metadata, root_path)?;
// Create or reuse a persistent cache for Etherscan sources; fall back to a temp dir
let root_path = if let Some(cache_root) =
foundry_config::Config::foundry_etherscan_chain_cache_dir(chain)
{
let sources_root = cache_root.join("sources");
let contract_root = sources_root.join(format!("{address}"));
if let Err(err) = std::fs::create_dir_all(&contract_root) {
sh_warn!("Could not create etherscan cache dir, falling back to temp: {err}")?;
tempfile::tempdir()?.path().to_path_buf()
} else {
contract_root
}
} else {
tempfile::tempdir()?.path().to_path_buf()
};
let mut project = etherscan_project(metadata, &root_path)?;
add_storage_layout_output(&mut project);

// Decide on compiler to use (user override -> metadata -> autodetect)
Expand Down Expand Up @@ -214,9 +225,6 @@ impl StorageArgs {
artifact
};

// Clear temp directory
root.close()?;

fetch_and_print_storage(provider, address, block, artifact).await
}
}
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