1  import os
 2  import time
 3  
 4  from beaglegaze.pay_per_call import pay_per_call, set_processor
 5  from beaglegaze.smart_contract import SmartContract
 6  from beaglegaze.async_batch_processor import AsyncBatchProcessor
 7  from beaglegaze.batch_mode import BatchMode
 8  from beaglegaze.contract_consumer import ContractConsumer
 9  
10  # --- Configuration ---
11  HARDHAT_URL = "http://localhost:8545"
12  
13  CLIENT_PRIVATE_KEY = "0xcccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc"
14  
15  # --- Demo Class ---
16  class MonetizedLibrary:
17      """
18      A demo class with a method that is monetized using the @pay_per_call decorator.
19      The MonetizedLibrary sets up its own AsyncBatchProcessor and SmartContract instance.
20      """
21      def __init__(self, network_url: str, client_private_key: str):
22          # Set up the async batch processor
23          async_processor = AsyncBatchProcessor(BatchMode.OFF)
24          
25          # Create smart contract instance
26          # the smart contract is deployed by the project maintainer(s)
27          # and hardcoded in the library 
28          smart_contract = SmartContract(
29              "0x289B72CEeaB48832261626D62E3daA87Fd90B024",
30              network_url,
31              client_private_key,
32              10  # batch size
33          )
34          
35          # Create contract consumer and add as observer
36          contract_consumer = ContractConsumer(smart_contract)
37          async_processor.add_observer(contract_consumer)
38          
39          # Set the global processor
40          set_processor(async_processor)
41  
42      @pay_per_call(price=10000)
43      def important_function(self, *args, **kwargs):
44          """
45          This function costs 10000 wei per call.
46          """
47          print(f"Executing important_function with args={args} and kwargs={kwargs}")
48          return "Success"
49  
50  # --- Main Demo Logic ---
51  def main():
52      """Main function to run the demo."""
53  
54      # 6. Use the monetized library
55      lib = MonetizedLibrary(HARDHAT_URL, CLIENT_PRIVATE_KEY)
56      print("\n--- Calling monetized function ---")
57      for i in range(5):
58          print(f"\nCall {i+1}:")
59          lib.important_function(i)
60          time.sleep(1) # Give some time for events to be processed
61      print("\n--- Demo complete ---")
62  
63  if __name__ == "__main__":
64      main()