FobSim/modification.py at master · krtn2902/FobSim · GitHub

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import random
import json
import os
import shutil
import time
import multiprocessing

keychain = multiprocessing.Queue()


def get_key():
    while not keychain.empty():
        keychain.get()


def return_key():
    keychain.put('KEY')


def initiate_files(gossip_activated):
    for filename in os.listdir('temporary'):
        file_path = os.path.join('temporary', filename)
        try:
            if os.path.isfile(file_path) or os.path.islink(file_path):
                os.unlink(file_path)
            elif os.path.isdir(file_path):
                shutil.rmtree(file_path)
        except Exception as e:
            print('Failed to delete %s. Reason: %s' % (file_path, e))
    write_file('temporary/confirmation_log.json', {})
    write_file('temporary/miner_wallets_log.json', {})
    if gossip_activated:
        write_file('temporary/longest_chain.json', {'chain': {}, 'from': 'Miner_1'})


def read_file(file_path):
    while keychain.empty():
        time.sleep(0.1)
    get_key()
    while True:
        try:
            with open(file_path, 'r') as f:
                file = json.load(f)
            return_key()
            return file
        except Exception as e:
            pass


def write_file(file_path, contents):
    while keychain.empty():
        time.sleep(0.1)
    get_key()
    while True:
        try:
            with open(file_path, 'w') as f:
                json.dump(contents, f, indent=4)
            return_key()
            break
        except Exception as e:
            pass


def rewrite_file(file_path, new_version):
    while keychain.empty():
        time.sleep(0.1)
    get_key()
    while True:
        try:
            os.remove(file_path)
        except Exception as e:
            try:
                with open(file_path, "w") as f:
                    json.dump(new_version, f, indent=4)
                return_key()
                break
            except Exception as e:
                pass


return_key()