diff options
| -rw-r--r-- | .github/workflows/ci.yml | 1 | ||||
| -rw-r--r-- | Cargo.lock | 651 | ||||
| -rw-r--r-- | Cargo.toml | 10 | ||||
| -rw-r--r-- | benches/bigfile.rs | 99 |
4 files changed, 760 insertions, 1 deletions
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml index 256d8d2..7c8372e 100644 --- a/.github/workflows/ci.yml +++ b/.github/workflows/ci.yml @@ -21,3 +21,4 @@ jobs: - run: rustup update ${{ matrix.toolchain }} && rustup default ${{ matrix.toolchain }} - run: cargo build --verbose - run: cargo test --verbose --all-features + - run: cargo bench @@ -3,6 +3,33 @@ version = 4 [[package]] +name = "aho-corasick" +version = "1.1.3" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "8e60d3430d3a69478ad0993f19238d2df97c507009a52b3c10addcd7f6bcb916" +dependencies = [ + "memchr", +] + +[[package]] +name = "anes" +version = "0.1.6" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "4b46cbb362ab8752921c97e041f5e366ee6297bd428a31275b9fcf1e380f7299" + +[[package]] +name = "anstyle" +version = "1.0.11" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = 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rngs::OsRng}; +use std::fs::{self, File}; +use std::io::{BufWriter, Write}; +use std::path::Path; + +// Create files `filenames` with random data with a size of `size` MB. +fn setup_files(filenames: Vec<&str>, size: usize) -> std::io::Result<Vec<Vec<u8>>> { + for filename in filenames.iter() { + if !Path::new(filename).exists() { + let file = File::create(filename)?; + let mut writer = BufWriter::new(file); + + let mut buffer = vec![0u8; 1024 * 1024]; // 1 MB buffer + + // 1 MB * size = total bytes + for _ in 0..size { + // Fill buffer with random bytes + OsRng.fill_bytes(&mut buffer); + writer.write_all(&buffer)?; + } + + writer.flush()?; + } + } + + let files: Vec<Vec<u8>> = filenames + .iter() + .map(|filename| fs::read(filename).expect("file not found")) + .collect(); + + Ok(files) +} + +fn cleanup_files(filenames: Vec<&str>) -> std::io::Result<()> { + for filename in filenames.iter() { + if Path::new(filename).exists() { + fs::remove_file(filename)?; + } + } + Ok(()) +} + +fn test_merkle_tree(files: &Vec<Vec<u8>>) { + let hasher = SHA256Hasher::new(); + + let tree = MerkleTree::new(hasher.clone(), files); + let proofer = DefaultProofer::new(&hasher, tree.leaves().clone()); + let root = tree.root(); + let root_hash = root.hash(); + + for i in 0..files.len() { + let proof = proofer.generate(i).expect("proof generation failed"); + assert!(proofer.verify(&proof, &files[i], root_hash, &hasher)); + } +} + +/// Example of a MarkleTree with 512 nodes which use SHA256 algorithm to make hashes. +/// Each node has a size of 1024 bytes. +/// Also, it verifies each node path with a proofer O(n). +fn bench_large_merkle_tree_sha256(c: &mut Criterion) { + let filenames = vec![ + "file-100mb-1.dat", + "file-100mb-2.dat", + "file-100mb-3.dat", + "file-100mb-4.dat", + "file-100mb-5.dat", + "file-100mb-6.dat", + "file-100mb-7.dat", + "file-100mb-8.dat", + "file-100mb-9.dat", + "file-100mb-10.dat", + ]; + + let mut group = c.benchmark_group("MerkleTree"); + group.sample_size(10); + for size in [5, 10, 15] { + group.bench_function( + format!("MerkleTree creation and validation with 10 nodes and SHA256 algorithm. {size} MB per each file."), + |b| { + let files = setup_files(filenames.clone(), size).expect("failed to allocate new files"); + + b.iter(|| { + test_merkle_tree(&files); + }); + cleanup_files(filenames.clone()).expect("failed to deallocate data"); + }, + ); + } + group.finish(); +} + +criterion_group!(benches, bench_large_merkle_tree_sha256); +criterion_main!(benches); |