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Mock a Two-Phase Commit Coordinator in Python
Simulates a two-phase commit protocol where a coordinator asks participants to prepare, then commits or aborts based on unanimous readiness.
import random
import time
from typing import Dict, List
class TwoPhaseCommitCoordinator:
def __init__(self, participants: List[str]):
self.participants = participants
self.participant_state: Dict[str, bool] = {}
def prepare(self) -> bool:
print("[Coordinator] Phase 1: Prepare")
…How to Implement a Two-Phase Commit Mock in Python
Simulate a distributed two-phase commit with prepare, commit, and abort phases, including deterministic failure injection for testing.
import random
from dataclasses import dataclass
from typing import Dict, List, Optional
@dataclass
class Transaction:
tx_id: int
data: Dict[str, str]
class TwoPhaseCommitMock:
"""Simple two-phase commit mock with prepare and commit phases."""
def __init__(self) -> None:
self.prepared: List…Two Phase Commit Cross Shard Mock in Python
Simulates a two-phase commit across shards with failure handling to demonstrate distributed transaction coordination in Python.
"""Mock cross-shard two-phase commit with caution handling."""
class Shard:
def __init__(self, name):
self.name = name
self.prepared = False
self.committed = False
self.aborted = False
def prepare(self):
# Simulate potential failure (1 in 3 chance on third shard)
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