q.insert(None, False, False, *records[key])
# create TransactionWorkers
transaction_workers = []
for i in range(num_threads):
transaction_workers.append(TransactionWorker([]))
# generates 10k random transactions
# each transaction will increment the first column of a record 5 times
for i in range(1000):
k = randint(0, 2000 - 1)
transaction = Transaction()
for j in range(5):
key = keys[k * 5 + j]
q = Query(grades_table)
transaction.add_query(q.select, key, 0, [1, 1, 1, 1, 1])
q = Query(grades_table)
transaction.add_query(q.increment, key, 1)
transaction_workers[i % num_threads].add_transaction(transaction)
threads = []
for transaction_worker in transaction_workers:
threads.append(threading.Thread(target=transaction_worker.run, args=()))
for i, thread in enumerate(threads):
print('Thread', i, 'started')
thread.start()
for i, thread in enumerate(threads):
thread.join()
print('Thread', i, 'finished')
# Create transactions and assign them to workers
transactions = []
transaction_workers = []
for i in range(num_threads):
transaction_workers.append(TransactionWorker())
for i in range(100):
key = choice(keys)
record = records[key]
c = record[1]
transaction = Transaction()
for i in range(5):
c += 1
q = Query(grades_table)
transaction.add_query(q.select, key, 0, [1, 1, 1, 1, 1])
q = Query(grades_table)
transaction.add_query(q.update, key, *[None, c, None, None, None])
transaction_workers[i % num_threads].add_transaction(transaction)
print("Transactions built")
threads = []
for transaction_worker in transaction_workers:
threads.append(threading.Thread(target=transaction_worker.run, args=()))
print("Threads created")
for thread in threads:
thread.start()
for thread in threads:
thread.join()
