c876b0aa20
✅ Phase 0: Pre-implementation checklist completed - Environment configurations (dev/staging/production) - Directory structure setup (logs, backups, monitoring) - Virtual environment with dependencies ✅ Master deployment script created - Single command deployment with validation - Progress tracking and rollback capability - Health checks and deployment reporting ✅ Validation script created - Module import validation - Basic functionality testing - Configuration and script verification ✅ Implementation fixes - Fixed dataclass import in consensus keys - Fixed async function syntax in tests - Updated deployment script for virtual environment 🚀 Ready for deployment: ./scripts/deploy-mesh-network.sh dev
543 lines
21 KiB
Python
543 lines
21 KiB
Python
"""
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Contract Upgrade System
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Handles safe contract versioning and upgrade mechanisms
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"""
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import asyncio
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import time
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import json
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from typing import Dict, List, Optional, Tuple, Set
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from dataclasses import dataclass
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from enum import Enum
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from decimal import Decimal
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class UpgradeStatus(Enum):
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PROPOSED = "proposed"
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APPROVED = "approved"
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REJECTED = "rejected"
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EXECUTED = "executed"
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FAILED = "failed"
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ROLLED_BACK = "rolled_back"
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class UpgradeType(Enum):
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PARAMETER_CHANGE = "parameter_change"
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LOGIC_UPDATE = "logic_update"
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SECURITY_PATCH = "security_patch"
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FEATURE_ADDITION = "feature_addition"
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EMERGENCY_FIX = "emergency_fix"
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@dataclass
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class ContractVersion:
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version: str
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address: str
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deployed_at: float
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total_contracts: int
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total_value: Decimal
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is_active: bool
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metadata: Dict
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@dataclass
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class UpgradeProposal:
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proposal_id: str
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contract_type: str
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current_version: str
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new_version: str
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upgrade_type: UpgradeType
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description: str
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changes: Dict
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voting_deadline: float
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execution_deadline: float
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status: UpgradeStatus
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votes: Dict[str, bool]
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total_votes: int
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yes_votes: int
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no_votes: int
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required_approval: float
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created_at: float
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proposer: str
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executed_at: Optional[float]
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rollback_data: Optional[Dict]
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class ContractUpgradeManager:
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"""Manages contract upgrades and versioning"""
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def __init__(self):
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self.contract_versions: Dict[str, List[ContractVersion]] = {} # contract_type -> versions
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self.active_versions: Dict[str, str] = {} # contract_type -> active version
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self.upgrade_proposals: Dict[str, UpgradeProposal] = {}
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self.upgrade_history: List[Dict] = []
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# Upgrade parameters
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self.min_voting_period = 86400 * 3 # 3 days
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self.max_voting_period = 86400 * 7 # 7 days
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self.required_approval_rate = 0.6 # 60% approval required
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self.min_participation_rate = 0.3 # 30% minimum participation
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self.emergency_upgrade_threshold = 0.8 # 80% for emergency upgrades
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self.rollback_timeout = 86400 * 7 # 7 days to rollback
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# Governance
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self.governance_addresses: Set[str] = set()
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self.stake_weights: Dict[str, Decimal] = {}
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# Initialize governance
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self._initialize_governance()
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def _initialize_governance(self):
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"""Initialize governance addresses"""
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# In real implementation, this would load from blockchain state
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# For now, use default governance addresses
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governance_addresses = [
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"0xgovernance1111111111111111111111111111111111111",
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"0xgovernance2222222222222222222222222222222222222",
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"0xgovernance3333333333333333333333333333333333333"
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]
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for address in governance_addresses:
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self.governance_addresses.add(address)
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self.stake_weights[address] = Decimal('1000') # Equal stake weights initially
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async def propose_upgrade(self, contract_type: str, current_version: str, new_version: str,
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upgrade_type: UpgradeType, description: str, changes: Dict,
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proposer: str, emergency: bool = False) -> Tuple[bool, str, Optional[str]]:
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"""Propose contract upgrade"""
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try:
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# Validate inputs
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if not all([contract_type, current_version, new_version, description, changes, proposer]):
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return False, "Missing required fields", None
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# Check proposer authority
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if proposer not in self.governance_addresses:
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return False, "Proposer not authorized", None
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# Check current version
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active_version = self.active_versions.get(contract_type)
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if active_version != current_version:
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return False, f"Current version mismatch. Active: {active_version}, Proposed: {current_version}", None
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# Validate new version format
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if not self._validate_version_format(new_version):
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return False, "Invalid version format", None
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# Check for existing proposal
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for proposal in self.upgrade_proposals.values():
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if (proposal.contract_type == contract_type and
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proposal.new_version == new_version and
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proposal.status in [UpgradeStatus.PROPOSED, UpgradeStatus.APPROVED]):
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return False, "Proposal for this version already exists", None
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# Generate proposal ID
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proposal_id = self._generate_proposal_id(contract_type, new_version)
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# Set voting deadlines
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current_time = time.time()
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voting_period = self.min_voting_period if not emergency else self.min_voting_period // 2
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voting_deadline = current_time + voting_period
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execution_deadline = voting_deadline + 86400 # 1 day after voting
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# Set required approval rate
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required_approval = self.emergency_upgrade_threshold if emergency else self.required_approval_rate
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# Create proposal
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proposal = UpgradeProposal(
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proposal_id=proposal_id,
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contract_type=contract_type,
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current_version=current_version,
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new_version=new_version,
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upgrade_type=upgrade_type,
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description=description,
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changes=changes,
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voting_deadline=voting_deadline,
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execution_deadline=execution_deadline,
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status=UpgradeStatus.PROPOSED,
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votes={},
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total_votes=0,
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yes_votes=0,
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no_votes=0,
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required_approval=required_approval,
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created_at=current_time,
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proposer=proposer,
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executed_at=None,
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rollback_data=None
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)
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self.upgrade_proposals[proposal_id] = proposal
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# Start voting process
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asyncio.create_task(self._manage_voting_process(proposal_id))
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log_info(f"Upgrade proposal created: {proposal_id} - {contract_type} {current_version} -> {new_version}")
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return True, "Upgrade proposal created successfully", proposal_id
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except Exception as e:
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return False, f"Failed to create proposal: {str(e)}", None
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def _validate_version_format(self, version: str) -> bool:
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"""Validate semantic version format"""
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try:
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parts = version.split('.')
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if len(parts) != 3:
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return False
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major, minor, patch = parts
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int(major) and int(minor) and int(patch)
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return True
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except ValueError:
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return False
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def _generate_proposal_id(self, contract_type: str, new_version: str) -> str:
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"""Generate unique proposal ID"""
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import hashlib
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content = f"{contract_type}:{new_version}:{time.time()}"
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return hashlib.sha256(content.encode()).hexdigest()[:12]
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async def _manage_voting_process(self, proposal_id: str):
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"""Manage voting process for proposal"""
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proposal = self.upgrade_proposals.get(proposal_id)
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if not proposal:
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return
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try:
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# Wait for voting deadline
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await asyncio.sleep(proposal.voting_deadline - time.time())
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# Check voting results
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await self._finalize_voting(proposal_id)
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except Exception as e:
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log_error(f"Error in voting process for {proposal_id}: {e}")
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proposal.status = UpgradeStatus.FAILED
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async def _finalize_voting(self, proposal_id: str):
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"""Finalize voting and determine outcome"""
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proposal = self.upgrade_proposals[proposal_id]
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# Calculate voting results
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total_stake = sum(self.stake_weights.get(voter, Decimal('0')) for voter in proposal.votes.keys())
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yes_stake = sum(self.stake_weights.get(voter, Decimal('0')) for voter, vote in proposal.votes.items() if vote)
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# Check minimum participation
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total_governance_stake = sum(self.stake_weights.values())
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participation_rate = float(total_stake / total_governance_stake) if total_governance_stake > 0 else 0
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if participation_rate < self.min_participation_rate:
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proposal.status = UpgradeStatus.REJECTED
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log_info(f"Proposal {proposal_id} rejected due to low participation: {participation_rate:.2%}")
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return
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# Check approval rate
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approval_rate = float(yes_stake / total_stake) if total_stake > 0 else 0
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if approval_rate >= proposal.required_approval:
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proposal.status = UpgradeStatus.APPROVED
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log_info(f"Proposal {proposal_id} approved with {approval_rate:.2%} approval")
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# Schedule execution
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asyncio.create_task(self._execute_upgrade(proposal_id))
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else:
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proposal.status = UpgradeStatus.REJECTED
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log_info(f"Proposal {proposal_id} rejected with {approval_rate:.2%} approval")
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async def vote_on_proposal(self, proposal_id: str, voter_address: str, vote: bool) -> Tuple[bool, str]:
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"""Cast vote on upgrade proposal"""
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proposal = self.upgrade_proposals.get(proposal_id)
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if not proposal:
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return False, "Proposal not found"
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# Check voting authority
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if voter_address not in self.governance_addresses:
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return False, "Not authorized to vote"
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# Check voting period
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if time.time() > proposal.voting_deadline:
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return False, "Voting period has ended"
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# Check if already voted
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if voter_address in proposal.votes:
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return False, "Already voted"
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# Cast vote
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proposal.votes[voter_address] = vote
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proposal.total_votes += 1
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if vote:
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proposal.yes_votes += 1
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else:
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proposal.no_votes += 1
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log_info(f"Vote cast on proposal {proposal_id} by {voter_address}: {'YES' if vote else 'NO'}")
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return True, "Vote cast successfully"
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async def _execute_upgrade(self, proposal_id: str):
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"""Execute approved upgrade"""
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proposal = self.upgrade_proposals[proposal_id]
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try:
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# Wait for execution deadline
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await asyncio.sleep(proposal.execution_deadline - time.time())
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# Check if still approved
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if proposal.status != UpgradeStatus.APPROVED:
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return
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# Prepare rollback data
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rollback_data = await self._prepare_rollback_data(proposal)
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# Execute upgrade
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success = await self._perform_upgrade(proposal)
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if success:
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proposal.status = UpgradeStatus.EXECUTED
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proposal.executed_at = time.time()
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proposal.rollback_data = rollback_data
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# Update active version
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self.active_versions[proposal.contract_type] = proposal.new_version
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# Record in history
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self.upgrade_history.append({
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'proposal_id': proposal_id,
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'contract_type': proposal.contract_type,
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'from_version': proposal.current_version,
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'to_version': proposal.new_version,
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'executed_at': proposal.executed_at,
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'upgrade_type': proposal.upgrade_type.value
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})
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log_info(f"Upgrade executed: {proposal_id} - {proposal.contract_type} {proposal.current_version} -> {proposal.new_version}")
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# Start rollback window
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asyncio.create_task(self._manage_rollback_window(proposal_id))
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else:
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proposal.status = UpgradeStatus.FAILED
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log_error(f"Upgrade execution failed: {proposal_id}")
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except Exception as e:
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proposal.status = UpgradeStatus.FAILED
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log_error(f"Error executing upgrade {proposal_id}: {e}")
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async def _prepare_rollback_data(self, proposal: UpgradeProposal) -> Dict:
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"""Prepare data for potential rollback"""
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return {
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'previous_version': proposal.current_version,
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'contract_state': {}, # Would capture current contract state
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'migration_data': {}, # Would store migration data
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'timestamp': time.time()
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}
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async def _perform_upgrade(self, proposal: UpgradeProposal) -> bool:
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"""Perform the actual upgrade"""
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try:
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# In real implementation, this would:
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# 1. Deploy new contract version
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# 2. Migrate state from old contract
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# 3. Update contract references
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# 4. Verify upgrade integrity
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# Simulate upgrade process
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await asyncio.sleep(10) # Simulate upgrade time
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# Create new version record
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new_version = ContractVersion(
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version=proposal.new_version,
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address=f"0x{proposal.contract_type}_{proposal.new_version}", # New address
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deployed_at=time.time(),
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total_contracts=0,
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total_value=Decimal('0'),
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is_active=True,
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metadata={
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'upgrade_type': proposal.upgrade_type.value,
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'proposal_id': proposal.proposal_id,
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'changes': proposal.changes
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}
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)
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# Add to version history
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if proposal.contract_type not in self.contract_versions:
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self.contract_versions[proposal.contract_type] = []
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# Deactivate old version
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for version in self.contract_versions[proposal.contract_type]:
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if version.version == proposal.current_version:
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version.is_active = False
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break
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# Add new version
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self.contract_versions[proposal.contract_type].append(new_version)
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return True
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except Exception as e:
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log_error(f"Upgrade execution error: {e}")
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return False
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async def _manage_rollback_window(self, proposal_id: str):
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"""Manage rollback window after upgrade"""
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proposal = self.upgrade_proposals[proposal_id]
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try:
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# Wait for rollback timeout
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await asyncio.sleep(self.rollback_timeout)
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# Check if rollback was requested
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if proposal.status == UpgradeStatus.EXECUTED:
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# No rollback requested, finalize upgrade
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await self._finalize_upgrade(proposal_id)
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except Exception as e:
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log_error(f"Error in rollback window for {proposal_id}: {e}")
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async def _finalize_upgrade(self, proposal_id: str):
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"""Finalize upgrade after rollback window"""
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proposal = self.upgrade_proposals[proposal_id]
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# Clear rollback data to save space
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proposal.rollback_data = None
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log_info(f"Upgrade finalized: {proposal_id}")
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async def rollback_upgrade(self, proposal_id: str, reason: str) -> Tuple[bool, str]:
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"""Rollback upgrade to previous version"""
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proposal = self.upgrade_proposals.get(proposal_id)
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if not proposal:
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return False, "Proposal not found"
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if proposal.status != UpgradeStatus.EXECUTED:
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return False, "Can only rollback executed upgrades"
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if not proposal.rollback_data:
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return False, "Rollback data not available"
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# Check rollback window
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if time.time() - proposal.executed_at > self.rollback_timeout:
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return False, "Rollback window has expired"
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try:
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# Perform rollback
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success = await self._perform_rollback(proposal)
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if success:
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proposal.status = UpgradeStatus.ROLLED_BACK
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# Restore previous version
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self.active_versions[proposal.contract_type] = proposal.current_version
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# Update version records
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for version in self.contract_versions[proposal.contract_type]:
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if version.version == proposal.new_version:
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version.is_active = False
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elif version.version == proposal.current_version:
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version.is_active = True
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log_info(f"Upgrade rolled back: {proposal_id} - Reason: {reason}")
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return True, "Rollback successful"
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else:
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return False, "Rollback execution failed"
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except Exception as e:
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log_error(f"Rollback error for {proposal_id}: {e}")
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return False, f"Rollback failed: {str(e)}"
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async def _perform_rollback(self, proposal: UpgradeProposal) -> bool:
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"""Perform the actual rollback"""
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try:
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# In real implementation, this would:
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# 1. Restore previous contract state
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# 2. Update contract references back
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# 3. Verify rollback integrity
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# Simulate rollback process
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await asyncio.sleep(5) # Simulate rollback time
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return True
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except Exception as e:
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log_error(f"Rollback execution error: {e}")
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return False
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async def get_proposal(self, proposal_id: str) -> Optional[UpgradeProposal]:
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"""Get upgrade proposal"""
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return self.upgrade_proposals.get(proposal_id)
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async def get_proposals_by_status(self, status: UpgradeStatus) -> List[UpgradeProposal]:
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"""Get proposals by status"""
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return [
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proposal for proposal in self.upgrade_proposals.values()
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if proposal.status == status
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]
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async def get_contract_versions(self, contract_type: str) -> List[ContractVersion]:
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"""Get all versions for a contract type"""
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return self.contract_versions.get(contract_type, [])
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async def get_active_version(self, contract_type: str) -> Optional[str]:
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"""Get active version for contract type"""
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return self.active_versions.get(contract_type)
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async def get_upgrade_statistics(self) -> Dict:
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"""Get upgrade system statistics"""
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total_proposals = len(self.upgrade_proposals)
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if total_proposals == 0:
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return {
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'total_proposals': 0,
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'status_distribution': {},
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'upgrade_types': {},
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'average_execution_time': 0,
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'success_rate': 0
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}
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# Status distribution
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status_counts = {}
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for proposal in self.upgrade_proposals.values():
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status = proposal.status.value
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status_counts[status] = status_counts.get(status, 0) + 1
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# Upgrade type distribution
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type_counts = {}
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for proposal in self.upgrade_proposals.values():
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up_type = proposal.upgrade_type.value
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type_counts[up_type] = type_counts.get(up_type, 0) + 1
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# Execution statistics
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executed_proposals = [
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proposal for proposal in self.upgrade_proposals.values()
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if proposal.status == UpgradeStatus.EXECUTED
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]
|
|
|
|
if executed_proposals:
|
|
execution_times = [
|
|
proposal.executed_at - proposal.created_at
|
|
for proposal in executed_proposals
|
|
if proposal.executed_at
|
|
]
|
|
avg_execution_time = sum(execution_times) / len(execution_times) if execution_times else 0
|
|
else:
|
|
avg_execution_time = 0
|
|
|
|
# Success rate
|
|
successful_upgrades = len(executed_proposals)
|
|
success_rate = successful_upgrades / total_proposals if total_proposals > 0 else 0
|
|
|
|
return {
|
|
'total_proposals': total_proposals,
|
|
'status_distribution': status_counts,
|
|
'upgrade_types': type_counts,
|
|
'average_execution_time': avg_execution_time,
|
|
'success_rate': success_rate,
|
|
'total_governance_addresses': len(self.governance_addresses),
|
|
'contract_types': len(self.contract_versions)
|
|
}
|
|
|
|
# Global upgrade manager
|
|
upgrade_manager: Optional[ContractUpgradeManager] = None
|
|
|
|
def get_upgrade_manager() -> Optional[ContractUpgradeManager]:
|
|
"""Get global upgrade manager"""
|
|
return upgrade_manager
|
|
|
|
def create_upgrade_manager() -> ContractUpgradeManager:
|
|
"""Create and set global upgrade manager"""
|
|
global upgrade_manager
|
|
upgrade_manager = ContractUpgradeManager()
|
|
return upgrade_manager
|