fix: replace datetime.UTC with timezone.utc for Python 3.12+ compatibility

scripts/monitoring/monitor-prs.py

@@ -11,7 +11,7 @@ import json
 import subprocess
 import tempfile
 import shutil
-from datetime import datetime, UTC, timezone
+from datetime import datetime, timezone, timezone
 
 GITEA_TOKEN = os.getenv('GITEA_TOKEN') or 'ffce3b62d583b761238ae00839dce7718acaad85'
 REPO = 'oib/aitbc'
@@ -80,7 +80,7 @@ def is_claim_expired(state):
     expires_at = state.get('expires_at')
     if not expires_at:
         return False
-    now_ts = datetime.now(datetime.UTC).timestamp()
+    now_ts = datetime.now(timezone.utc).timestamp()
     return now_ts > expires_at
 
 def get_open_prs():
@@ -135,7 +135,7 @@ def validate_pr_branch(pr):
         shutil.rmtree(tmpdir, ignore_errors=True)
 
 def main():
-    now = datetime.now(datetime.UTC).replace(tzinfo=timezone.utc)
+    now = datetime.now(timezone.utc).replace(tzinfo=timezone.utc)
     now_iso = now.isoformat()
     now_ts = now.timestamp()
     print(f"[{now_iso}] Monitoring PRs and claim locks...")
@@ -218,7 +218,7 @@ def main():
 def cleanup_global_expired_claims(now_ts=None):
     """Delete remote claim branches that are older than TTL, even if state file is gone."""
     if now_ts is None:
-        now_ts = datetime.now(datetime.UTC).timestamp()
+        now_ts = datetime.now(timezone.utc).timestamp()
     # List all remote claim branches
     result = subprocess.run(['git', 'ls-remote', '--heads', 'origin', 'claim/*'],
                             capture_output=True, text=True, cwd='/opt/aitbc')

scripts/security/security_audit.py

@@ -9,7 +9,7 @@ import sys
 import json
 import subprocess
 import logging
-from datetime import datetime, UTC
+from datetime import datetime, timezone
 from pathlib import Path
 from typing import Dict, List, Any, Tuple
 import hashlib
@@ -25,7 +25,7 @@ class SecurityAudit:
     def __init__(self, project_root: str = "/opt/aitbc"):
         self.project_root = Path(project_root)
         self.results = {
-            "timestamp": datetime.now(datetime.UTC).isoformat(),
+            "timestamp": datetime.now(timezone.utc).isoformat(),
             "audit_version": "v0.2.0",
             "findings": [],
             "score": 0,

scripts/services/gpu/gpu_miner_host.py

@@ -10,7 +10,7 @@ import logging
 import sys
 import subprocess
 import os
-from datetime import datetime, UTC
+from datetime import datetime, timezone
 
 # Configuration
 COORDINATOR_URL = "http://127.0.0.1:8011"
@@ -147,7 +147,7 @@ def send_heartbeat():
         heartbeat_data = {
             "status": "active",
             "current_jobs": 0,
-            "last_seen": datetime.now(datetime.UTC).isoformat(),
+            "last_seen": datetime.now(timezone.utc).isoformat(),
             "gpu_utilization": gpu_info["utilization"],
             "memory_used": gpu_info["memory_used"],
             "memory_total": gpu_info["memory_total"]
@@ -156,7 +156,7 @@ def send_heartbeat():
         heartbeat_data = {
             "status": "active",
             "current_jobs": 0,
-            "last_seen": datetime.now(datetime.UTC).isoformat(),
+            "last_seen": datetime.now(timezone.utc).isoformat(),
             "gpu_utilization": 0,
             "memory_used": 0,
         }

scripts/services/gpu/gpu_registry_demo.py

@@ -7,7 +7,7 @@ from fastapi import FastAPI, HTTPException
 from pydantic import BaseModel
 from typing import Dict, Any, Optional
 import uvicorn
-from datetime import datetime, UTC
+from datetime import datetime, timezone
 
 app = FastAPI(title="GPU Registry Demo")
 
@@ -37,8 +37,8 @@ async def register_gpu(miner_id: str, gpu_data: GPURegistration):
     """Register a GPU miner"""
     registered_gpus[miner_id] = {
         "id": miner_id,
-        "registered_at": datetime.now(datetime.UTC).isoformat(),
-        "last_heartbeat": datetime.now(datetime.UTC).isoformat(),
+        "registered_at": datetime.now(timezone.utc).isoformat(),
+        "last_heartbeat": datetime.now(timezone.utc).isoformat(),
         **gpu_data.dict()
     }
     return {"status": "ok", "message": f"GPU {miner_id} registered successfully"}
@@ -49,7 +49,7 @@ async def heartbeat(miner_id: str, heartbeat_data: Heartbeat):
     if miner_id not in registered_gpus:
         raise HTTPException(status_code=404, detail="GPU not registered")
     
-    registered_gpus[miner_id]["last_heartbeat"] = datetime.now(datetime.UTC).isoformat()
+    registered_gpus[miner_id]["last_heartbeat"] = datetime.now(timezone.utc).isoformat()
     registered_gpus[miner_id]["status"] = heartbeat_data.status
     registered_gpus[miner_id]["metadata"] = heartbeat_data.metadata
     

scripts/testing/qa-cycle.py

@@ -10,7 +10,7 @@ import sys
 import shutil
 import time
 import random
-from datetime import datetime, UTC
+from datetime import datetime, timezone
 from pathlib import Path
 
 # Jitter: random delay up to 15 minutes (900 seconds)

scripts/utils/claim-task.py

@@ -6,7 +6,7 @@ Uses Git branch atomic creation as a distributed lock to prevent duplicate work.
 import os
 import json
 import subprocess
-from datetime import datetime, UTC, timedelta
+from datetime import datetime, timezone, timedelta
 
 REPO_DIR = '/opt/aitbc'
 STATE_FILE = '/opt/aitbc/.claim-state.json'
@@ -106,7 +106,7 @@ def create_work_branch(issue_number, title):
     return branch_name
 
 def main():
-    now = datetime.now(datetime.UTC)
+    now = datetime.now(timezone.utc)
     print(f"[{now.isoformat()}Z] Claim task cycle starting...")
     
     state = load_state()
@@ -155,7 +155,7 @@ def main():
                 'current_claim': num,
                 'claim_branch': f'claim/{num}',
                 'work_branch': work_branch,
-                'claimed_at': datetime.now(datetime.UTC).isoformat() + 'Z',
+                'claimed_at': datetime.now(timezone.utc).isoformat() + 'Z',
                 'issue_title': title,
                 'labels': labels
             })

scripts/utils/fix_gpu_release.py

@@ -10,7 +10,7 @@ sys.path.insert(0, '/home/oib/windsurf/aitbc/apps/coordinator-api/src')
 from sqlmodel import Session, select
 from app.database import engine, create_db_and_tables
 from app.domain.gpu_marketplace import GPURegistry, GPUBooking
-from datetime import datetime, UTC, timedelta
+from datetime import datetime, timezone, timedelta
 
 def fix_gpu_release():
     """Fix GPU release issue by ensuring proper booking records exist"""
@@ -40,7 +40,7 @@ def fix_gpu_release():
             print("❌ No active booking found, creating one...")
             
             # Create a booking record
-            now = datetime.now(datetime.UTC)
+            now = datetime.now(timezone.utc)
             booking = GPUBooking(
                 gpu_id=gpu_id,
                 client_id="localhost-user",

scripts/utils/generate-api-keys.py

@@ -8,7 +8,7 @@ Generates cryptographically secure API keys for testing CLI commands
 import secrets
 import json
 import sys
-from datetime import datetime, UTC, timedelta
+from datetime import datetime, timezone, timedelta
 
 def generate_api_key(length=32):
     """Generate a cryptographically secure API key"""
@@ -23,8 +23,8 @@ def create_api_key_entry(name, permissions="client", environment="default"):
         "api_key": api_key,  # Stored in memory only, masked when printed
         "permissions": permissions.split(",") if isinstance(permissions, str) else permissions,
         "environment": environment,
-        "created_at": datetime.now(datetime.UTC).isoformat(),
-        "expires_at": (datetime.now(datetime.UTC) + timedelta(days=365)).isoformat(),
+        "created_at": datetime.now(timezone.utc).isoformat(),
+        "expires_at": (datetime.now(timezone.utc) + timedelta(days=365)).isoformat(),
         "status": "active"
     }
     

scripts/utils/keystore.py

@@ -12,7 +12,7 @@ import hashlib
 import json
 import os
 import secrets
-from datetime import datetime, UTC
+from datetime import datetime, timezone
 from pathlib import Path
 
 from cryptography.fernet import Fernet
@@ -55,7 +55,7 @@ def create_keystore(address: str, password: str, keystore_dir: Path | str = "/va
     keystore = {
         "address": address,
         "crypto": encrypted,
-        "created_at": datetime.now(datetime.UTC).isoformat() + "Z",
+        "created_at": datetime.now(timezone.utc).isoformat() + "Z",
     }
 
     out_file.write_text(json.dumps(keystore, indent=2))
@@ -100,7 +100,7 @@ def main() -> None:
     keystore = {
         "address": args.address,
         "crypto": encrypted,
-        "created_at": datetime.now(datetime.UTC).isoformat() + "Z",
+        "created_at": datetime.now(timezone.utc).isoformat() + "Z",
     }
 
     out_file.write_text(json.dumps(keystore, indent=2))