| import hashlib |
| import json |
| import time |
|
|
| class BlockchainLogger: |
| def __init__(self): |
| self.chain = [] |
| self.create_block(previous_hash='0') |
|
|
| def create_block(self, previous_hash): |
| block = { |
| 'index': len(self.chain) + 1, |
| 'timestamp': time.time(), |
| 'data': [], |
| 'previous_hash': previous_hash, |
| 'hash': '' |
| } |
| block['hash'] = self.hash_block(block) |
| self.chain.append(block) |
| return block |
|
|
| def hash_block(self, block): |
| block_string = json.dumps(block, sort_keys=True).encode() |
| return hashlib.sha256(block_string).hexdigest() |
|
|
| def add_data(self, data): |
| self.chain[-1]['data'].append(data) |
| self.chain[-1]['hash'] = self.hash_block(self.chain[-1]) |
|
|
| def log_event(self, event): |
| self.add_data(event) |
|
|
| def verify_chain(self): |
| for i in range(1, len(self.chain)): |
| current_block = self.chain[i] |
| previous_block = self.chain[i - 1] |
| if current_block['previous_hash'] != previous_block['hash']: |
| return False |
| if current_block['hash'] != self.hash_block(current_block): |
| return False |
| return True |
|
|
| def get_chain(self): |
| return self.chain |
|
|
| def integrate_with_new_components(self, new_component_data): |
| self.add_data(new_component_data) |
| return self.chain |
|
|
| def ensure_compatibility(self, existing_data, new_component_data): |
| self.add_data(existing_data) |
| self.add_data(new_component_data) |
| return self.chain |
|
|
