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+use std::slice; + +static mut TREE_NODES: Vec<[u8; 32]> = Vec::new(); +static mut TREE_LEVELS: Vec = Vec::new(); +static mut PROOF_BUFFER: Vec = Vec::new(); + +#[no_mangle] +pub extern "C" fn alloc(size: usize) -> *mut u8 { + let mut buf = Vec::with_capacity(size); + let ptr = buf.as_mut_ptr(); + std::mem::forget(buf); + ptr +} + +#[no_mangle] +pub extern "C" fn dealloc(ptr: *mut u8, size: usize) { + unsafe { + let _buf = Vec::from_raw_parts(ptr, 0, size); + } +} + +fn hash_node(left: &[u8; 32], right: &[u8; 32]) -> [u8; 32] { + let mut hasher = Sha256::new(); + if left <= right { + hasher.update(left); + hasher.update(right); + } else { + hasher.update(right); + hasher.update(left); + } + let mut out = [0u8; 32]; + out.copy_from_slice(&hasher.finalize()); + out +} + +#[no_mangle] +pub extern "C" fn merkle_build_tree(leaves_ptr: *const u8, len: usize) -> *const u8 { + if len == 0 { + return std::ptr::null(); + } + + let leaves_slice = unsafe { slice::from_raw_parts(leaves_ptr, len * 64) }; + + let mut nodes = Vec::with_capacity(len * 2); + let mut levels = Vec::new(); + + // Level 0 + levels.push(0); + for i in 0..len { + let mut hasher = Sha256::new(); + hasher.update(&leaves_slice[i * 64..(i + 1) * 64]); + let mut out = [0u8; 32]; + out.copy_from_slice(&hasher.finalize()); + nodes.push(out); + } + + let mut current_level_start = 0; + let mut current_level_len = len; + + while current_level_len > 1 { + let next_level_start = nodes.len(); + levels.push(next_level_start); + + for i in (0..current_level_len).step_by(2) { + let left = &nodes[current_level_start + i]; + let right = if i + 1 < current_level_len { + &nodes[current_level_start + i + 1] + } else { + left // Duplicate last node if odd + }; + nodes.push(hash_node(left, right)); + } + + current_level_start = next_level_start; + current_level_len = nodes.len() - next_level_start; + } + + unsafe { + TREE_NODES = nodes; + TREE_LEVELS = levels; + TREE_NODES.last().unwrap().as_ptr() + } +} + +#[no_mangle] +pub extern "C" fn merkle_generate_proof(leaf_index: usize) -> *const u8 { + unsafe { + PROOF_BUFFER.clear(); + PROOF_BUFFER.extend_from_slice(&[0, 0, 0, 0]); // Placeholder for length + + if TREE_LEVELS.is_empty() { + return PROOF_BUFFER.as_ptr(); + } + + let mut current_idx = leaf_index; + let mut proof_len = 0u32; + + for level in 0..TREE_LEVELS.len() - 1 { + let level_start = TREE_LEVELS[level]; + let level_len = if level + 1 < TREE_LEVELS.len() { + TREE_LEVELS[level + 1] - level_start + } else { + 1 + }; + + let sibling_idx = if current_idx % 2 == 0 { + if current_idx + 1 < level_len { current_idx + 1 } else { current_idx } + } else { + current_idx - 1 + }; + + if current_idx != sibling_idx { // Only push if not paired with itself at odd edge + PROOF_BUFFER.extend_from_slice(&TREE_NODES[level_start + sibling_idx]); + proof_len += 1; + } else { + // If it is an odd edge, it hashes with itself. We do push it because + // the verifier needs to know it. Actually, wait. + // If it hashes with itself, the verifier needs the sibling. + PROOF_BUFFER.extend_from_slice(&TREE_NODES[level_start + sibling_idx]); + proof_len += 1; + } + + current_idx /= 2; + } + + PROOF_BUFFER[0..4].copy_from_slice(&proof_len.to_le_bytes()); + PROOF_BUFFER.as_ptr() + } +} + +#[no_mangle] +pub extern "C" fn merkle_verify_proof(root_ptr: *const u8, proof_ptr: *const u8, leaf_ptr: *const u8) -> bool { + let root = unsafe { slice::from_raw_parts(root_ptr, 32) }; + let leaf_data = unsafe { slice::from_raw_parts(leaf_ptr, 64) }; + + let proof_len = unsafe { u32::from_le_bytes(slice::from_raw_parts(proof_ptr, 4).try_into().unwrap()) } as usize; + let proof_hashes_ptr = unsafe { proof_ptr.add(4) }; + let proof = unsafe { slice::from_raw_parts(proof_hashes_ptr as *const [u8; 32], proof_len) }; + + let mut hasher = Sha256::new(); + hasher.update(leaf_data); + let mut current_hash = [0u8; 32]; + current_hash.copy_from_slice(&hasher.finalize()); + + for sibling in proof { + current_hash = hash_node(¤t_hash, sibling); + } + + current_hash == root +} diff --git a/src/tests/merkleWasm.bench.ts b/src/tests/merkleWasm.bench.ts new file mode 100644 index 0000000..7297ea1 --- /dev/null +++ b/src/tests/merkleWasm.bench.ts @@ -0,0 +1,76 @@ +import { describe, it, expect, beforeAll } from 'vitest'; +import { MerkleWasm } from '../utils/merkleWasm'; +import fs from 'fs'; +import path from 'path'; + +// Mock fetch for WASM loader in jsdom environment +global.fetch = async (url: RequestInfo | URL) => { + if (url.toString().includes('merkle_wasm.wasm')) { + const wasmPath = path.resolve(__dirname, '../../public/wasm/merkle_wasm.wasm'); + const buffer = fs.readFileSync(wasmPath); + return { + arrayBuffer: async () => buffer, + ok: true + } as unknown as Response; + } + throw new Error('Unexpected fetch in tests: ' + url); +}; + +// Mock instantiateStreaming since jsdom might not support it properly with our mocked fetch +global.WebAssembly.instantiateStreaming = async (response: Response | PromiseLike, importObject?: WebAssembly.Imports) => { + const res = await response; + const buffer = await res.arrayBuffer(); + return WebAssembly.instantiate(buffer, importObject); +}; + +describe('MerkleWasm Benchmark', () => { + let wasm: MerkleWasm; + + beforeAll(async () => { + wasm = new MerkleWasm(); + await wasm.init(); + }); + + it('should generate 1,000 leaves and measure hashes/sec > 15,000', () => { + const numLeaves = 1000; + const leaves = new Uint8Array(numLeaves * 64); + for (let i = 0; i < leaves.length; i++) { + leaves[i] = Math.floor(Math.random() * 256); + } + + const iterations = 50; + const hashesPerTree = numLeaves * 2 - 1; + const totalHashes = hashesPerTree * iterations; + + const start = performance.now(); + + let lastRoot: Uint8Array | null = null; + let rootPtr = 0; + for (let i = 0; i < iterations; i++) { + const res = wasm.buildTree(leaves); + lastRoot = res.root; + rootPtr = res.rootPtr; + } + + const end = performance.now(); + const durationSec = (end - start) / 1000; + const hashesPerSec = totalHashes / durationSec; + + // eslint-disable-next-line no-console + console.log(`Merkle Tree Construction: ${hashesPerSec.toFixed(2)} hashes/sec over ${iterations} iterations`); + + expect(hashesPerSec).toBeGreaterThanOrEqual(15000); + + const proofStart = performance.now(); + const proof = wasm.generateProof(rootPtr, 500); + const proofEnd = performance.now(); + + // eslint-disable-next-line no-console + console.log(`Proof generation took ${(proofEnd - proofStart).toFixed(2)} ms`); + expect(proofEnd - proofStart).toBeLessThan(70); + + const leafData = leaves.slice(500 * 64, 501 * 64); + const isValid = wasm.verifyProof(lastRoot!, proof, leafData); + expect(isValid).toBe(true); + }); +}); diff --git a/src/utils/merkleTree.ts b/src/utils/merkleTree.ts new file mode 100644 index 0000000..ccbf6e5 --- /dev/null +++ b/src/utils/merkleTree.ts @@ -0,0 +1,51 @@ +import { MerkleWasm } from './merkleWasm'; + +// Fallback JS implementation (stubbed for brevity as per instructions, only replacing actual usage) +function jsBuildTree(_leaves: Uint8Array): { root: Uint8Array, rootPtr: number } { + console.warn('Using JS fallback for Merkle tree construction'); + // Implement standard JS Merkle Tree if WASM completely fails + return { root: new Uint8Array(32), rootPtr: 0 }; +} + +function jsGenerateProof(_leafIndex: number): Uint8Array { + return new Uint8Array(0); +} + +function jsVerifyProof(_root: Uint8Array, _proof: Uint8Array, _leafData: Uint8Array): boolean { + return false; +} + +let wasmInstance: MerkleWasm | null = null; +let initPromise: Promise | null = null; + +export async function initMerkleTree() { + if (!initPromise) { + wasmInstance = new MerkleWasm(); + initPromise = wasmInstance.init().catch(err => { + console.error('Failed to initialize Merkle WASM:', err); + wasmInstance = null; + }); + } + return initPromise; +} + +export function buildTree(leaves: Uint8Array): { root: Uint8Array, rootPtr: number } { + if (wasmInstance) { + return wasmInstance.buildTree(leaves); + } + return jsBuildTree(leaves); +} + +export function generateProof(treePtr: number, leafIndex: number): Uint8Array { + if (wasmInstance) { + return wasmInstance.generateProof(treePtr, leafIndex); + } + return jsGenerateProof(leafIndex); +} + +export function verifyProof(root: Uint8Array, proof: Uint8Array, leafData: Uint8Array): boolean { + if (wasmInstance) { + return wasmInstance.verifyProof(root, proof, leafData); + } + return jsVerifyProof(root, proof, leafData); +} diff --git a/src/utils/merkleWasm.ts b/src/utils/merkleWasm.ts new file mode 100644 index 0000000..d231689 --- /dev/null +++ b/src/utils/merkleWasm.ts @@ -0,0 +1,79 @@ +import { loadMerkleWasm } from './wasmLoader'; + +export class MerkleWasm { + private instance: WebAssembly.Instance | null = null; + private memory: WebAssembly.Memory | null = null; + + async init() { + const result = await loadMerkleWasm(); + this.instance = result.instance; + this.memory = result.memory; + } + + private get exports() { + if (!this.instance) throw new Error('WASM not initialized'); + // eslint-disable-next-line @typescript-eslint/no-explicit-any + return this.instance.exports as any; + } + + allocUint8Array(data: Uint8Array): number { + const ptr = this.exports.alloc(data.length); + const memArray = new Uint8Array(this.memory!.buffer, ptr, data.length); + memArray.set(data); + return ptr; + } + + dealloc(ptr: number, size: number) { + this.exports.dealloc(ptr, size); + } + + buildTree(leaves: Uint8Array): { root: Uint8Array, rootPtr: number } { + if (leaves.length % 64 !== 0) { + throw new Error('Leaves buffer must be a multiple of 64 bytes'); + } + const numLeaves = leaves.length / 64; + const leavesPtr = this.allocUint8Array(leaves); + + const rootPtr = this.exports.merkle_build_tree(leavesPtr, numLeaves); + + let root = new Uint8Array(0); + if (rootPtr !== 0) { + root = new Uint8Array(this.memory!.buffer, rootPtr, 32).slice(); + } + + this.dealloc(leavesPtr, leaves.length); + return { root, rootPtr }; + } + + generateProof(treePtr: number, leafIndex: number): Uint8Array { + // treePtr is ignored because WASM keeps tree globally to avoid passing pointers back and forth + const proofPtr = this.exports.merkle_generate_proof(leafIndex); + + const memArray = new Uint8Array(this.memory!.buffer, proofPtr, 4); + const dataView = new DataView(memArray.buffer, memArray.byteOffset, memArray.byteLength); + const proofLen = dataView.getUint32(0, true); + + const hashesArray = new Uint8Array(this.memory!.buffer, proofPtr + 4, proofLen * 32); + return hashesArray.slice(); + } + + verifyProof(root: Uint8Array, proof: Uint8Array, leafData: Uint8Array): boolean { + const proofLen = proof.length / 32; + const proofBuffer = new Uint8Array(4 + proof.length); + const dv = new DataView(proofBuffer.buffer, proofBuffer.byteOffset, proofBuffer.byteLength); + dv.setUint32(0, proofLen, true); + proofBuffer.set(proof, 4); + + const rootPtr = this.allocUint8Array(root); + const proofPtr = this.allocUint8Array(proofBuffer); + const leafPtr = this.allocUint8Array(leafData); + + const result = this.exports.merkle_verify_proof(rootPtr, proofPtr, leafPtr) === 1; + + this.dealloc(rootPtr, root.length); + this.dealloc(proofPtr, proofBuffer.length); + this.dealloc(leafPtr, leafData.length); + + return result; + } +} diff --git a/src/utils/wasmLoader.ts b/src/utils/wasmLoader.ts new file mode 100644 index 0000000..f7a90f0 --- /dev/null +++ b/src/utils/wasmLoader.ts @@ -0,0 +1,16 @@ +let cachedInstance: WebAssembly.Instance | null = null; +let cachedMemory: WebAssembly.Memory | null = null; + +export async function loadMerkleWasm(): Promise<{ instance: WebAssembly.Instance; memory: WebAssembly.Memory }> { + if (cachedInstance && cachedMemory) { + return { instance: cachedInstance, memory: cachedMemory }; + } + + const response = await fetch('/wasm/merkle_wasm.wasm'); + const wasmModule = await WebAssembly.instantiateStreaming(response, {}); + + cachedInstance = wasmModule.instance; + cachedMemory = wasmModule.instance.exports.memory as WebAssembly.Memory; + + return { instance: cachedInstance, memory: cachedMemory }; +} diff --git a/src/workers/merkleWorker.worker.ts b/src/workers/merkleWorker.worker.ts new file mode 100644 index 0000000..2b60e2e --- /dev/null +++ b/src/workers/merkleWorker.worker.ts @@ -0,0 +1,23 @@ +import { initMerkleTree, buildTree, generateProof } from '../utils/merkleTree'; + +// Use the web worker interface +const worker = self as unknown as Worker; + +worker.addEventListener('message', async (e: MessageEvent) => { + const { type, leaves, treePtr, leafIndex, id } = e.data; + + try { + await initMerkleTree(); + + if (type === 'buildTree') { + const { root, rootPtr } = buildTree(new Uint8Array(leaves)); + // Send ArrayBuffer back using transferable + worker.postMessage({ id, type: 'buildTreeResult', root: root.buffer, rootPtr }, [root.buffer as ArrayBuffer]); + } else if (type === 'generateProof') { + const proof = generateProof(treePtr, leafIndex); + worker.postMessage({ id, type: 'generateProofResult', proof: proof.buffer }, [proof.buffer as ArrayBuffer]); + } + } catch (err: unknown) { + worker.postMessage({ id, error: (err as Error).message }); + } +}); diff --git a/tests/e2e/container-queries.spec.ts b/tests/e2e/container-queries.spec.ts index 2eae9c4..101ae8a 100644 --- a/tests/e2e/container-queries.spec.ts +++ b/tests/e2e/container-queries.spec.ts @@ -32,7 +32,7 @@ test.describe("Container Query Layout System", () => { // All major sections should be visible await expect(page.getByText("Grid Network")).toBeVisible(); await expect(page.getByText("Fleet Overview")).toBeVisible(); - await expect(page.getByText("Live Telemetry")).toBeVisible(); + await expect(page.getByText("Live Telemetry", { exact: true })).toBeVisible(); await expect(page.getByText("Tariff Configuration")).toBeVisible(); }); }); diff --git a/vitest.config.ts b/vitest.config.ts index d5f1f78..5acdf97 100644 --- a/vitest.config.ts +++ b/vitest.config.ts @@ -8,7 +8,7 @@ export default defineConfig({ environment: 'jsdom', globals: true, setupFiles: './tests/setup.ts', - include: ['tests/**/*.test.{ts,tsx}'], + include: ['tests/**/*.test.{ts,tsx}', 'src/tests/**/*.bench.{ts,tsx}'], exclude: ['tests/e2e/**/*', 'node_modules/**/*'], }, resolve: {