Examples with MerkleTrieException org.hyperledger.besu.ethereum.trie.MerkleTrieException used on opensource projects

Example 1 with MerkleTrieException

use of org.hyperledger.besu.ethereum.trie.MerkleTrieException in project besu by hyperledger.

the class RangeManager method findNewBeginElementInRange.

/**
 * Helps to create a new range according to the last data obtained. This happens when a peer
 * doesn't return all of the data in a range.
 *
 * @param worldstateRootHash the root hash
 * @param proofs proof received
 * @param endKeyHash the end of the range initially wanted
 * @param receivedKeys the last key received
 * @return begin of the new range
 */
public static Optional<Bytes32> findNewBeginElementInRange(final Bytes32 worldstateRootHash, final List<Bytes> proofs, final TreeMap<Bytes32, Bytes> receivedKeys, final Bytes32 endKeyHash) {
    if (receivedKeys.isEmpty() || receivedKeys.lastKey().compareTo(endKeyHash) >= 0) {
        return Optional.empty();
    } else {
        final Map<Bytes32, Bytes> proofsEntries = new HashMap<>();
        for (Bytes proof : proofs) {
            proofsEntries.put(Hash.hash(proof), proof);
        }
        final StoredMerklePatriciaTrie<Bytes, Bytes> storageTrie = new StoredMerklePatriciaTrie<>(new InnerNodeDiscoveryManager<>((location, key) -> Optional.ofNullable(proofsEntries.get(key)), Function.identity(), Function.identity(), receivedKeys.lastKey(), endKeyHash, false), worldstateRootHash);
        try {
            storageTrie.visitAll(bytesNode -> {
            });
        } catch (MerkleTrieException e) {
            return Optional.of(InnerNodeDiscoveryManager.decodePath(e.getLocation()));
        }
        return Optional.empty();
    }
}

Example 2 with MerkleTrieException

use of org.hyperledger.besu.ethereum.trie.MerkleTrieException in project besu by hyperledger.

the class WorldStateProofProvider method isValidRangeProof.

public boolean isValidRangeProof(final Bytes32 startKeyHash, final Bytes32 endKeyHash, final Bytes32 rootHash, final List<Bytes> proofs, final TreeMap<Bytes32, Bytes> keys) {
    // check if it's monotonic increasing
    if (!Ordering.natural().isOrdered(keys.keySet())) {
        return false;
    }
    // when proof is empty we need to have all the keys to reconstruct the trie
    if (proofs.isEmpty()) {
        final MerklePatriciaTrie<Bytes, Bytes> trie = new SimpleMerklePatriciaTrie<>(Function.identity());
        // add the received keys in the trie
        for (Map.Entry<Bytes32, Bytes> key : keys.entrySet()) {
            trie.put(key.getKey(), key.getValue());
        }
        return rootHash.equals(trie.getRootHash());
    }
    // reconstruct a part of the trie with the proof
    final Map<Bytes32, Bytes> proofsEntries = new HashMap<>();
    for (Bytes proof : proofs) {
        proofsEntries.put(Hash.hash(proof), proof);
    }
    if (keys.isEmpty()) {
        final MerklePatriciaTrie<Bytes, Bytes> trie = new StoredMerklePatriciaTrie<>(new InnerNodeDiscoveryManager<>((location, hash) -> Optional.ofNullable(proofsEntries.get(hash)), Function.identity(), Function.identity(), startKeyHash, endKeyHash, false), rootHash);
        try {
            // check if there is not missing element
            // a missing node will throw an exception while it is loading
            // @see org.hyperledger.besu.ethereum.trie.StoredNode#load()
            trie.entriesFrom(startKeyHash, Integer.MAX_VALUE);
        } catch (MerkleTrieException e) {
            return false;
        }
        return true;
    }
    // search inner nodes in the range created by the proofs and remove
    final InnerNodeDiscoveryManager<Bytes> snapStoredNodeFactory = new InnerNodeDiscoveryManager<>((location, hash) -> Optional.ofNullable(proofsEntries.get(hash)), Function.identity(), Function.identity(), startKeyHash, keys.lastKey(), true);
    final MerklePatriciaTrie<Bytes, Bytes> trie = new StoredMerklePatriciaTrie<>(snapStoredNodeFactory, rootHash);
    // filling out innerNodes of the InnerNodeDiscoveryManager by walking through the trie
    trie.visitAll(node -> {
    });
    final List<InnerNode> innerNodes = snapStoredNodeFactory.getInnerNodes();
    for (InnerNode innerNode : innerNodes) {
        trie.removePath(Bytes.concatenate(innerNode.location(), innerNode.path()), new RemoveVisitor<>(false));
    }
    // add the received keys in the trie to reconstruct the trie
    for (Map.Entry<Bytes32, Bytes> account : keys.entrySet()) {
        trie.put(account.getKey(), account.getValue());
    }
    // check if the generated root hash is valid
    return rootHash.equals(trie.getRootHash());
}