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Author SHA1 Message Date
Alexander Whitestone
f253d24ce3 feat: time-aware model routing for cron jobs (#317)
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Forge CI / smoke-and-build (pull_request) Failing after 1m7s
Empirical finding: cron error rate peaks at 18:00 (9.4%) vs 4.0% at 09:00.
Route cron tasks to more capable models during high-error windows.

Changes:
- agent/smart_model_routing.py: Added resolve_cron_model() + _hour_in_window()
- cron/scheduler.py: Wired into run_job() after base model resolution
- tests/test_cron_model_routing.py: 17 tests covering all edge cases

Config (config.yaml):
  cron_model_routing:
    enabled: true
    fallback_model: "anthropic/claude-sonnet-4"
    fallback_provider: "openrouter"
    windows:
      - start_hour: 17
        end_hour: 22
        reason: "evening_error_peak"
      - start_hour: 2
        end_hour: 5
        reason: "overnight_api_instability"

Features:
- Time windows with [start, end) semantics
- Midnight wrap support (e.g., 22-06)
- Per-window model/provider override or global fallback
- First matching window wins
- Graceful degradation: malformed windows skipped, no config = no-op
- Logs override with reason for observability

Closes #317
2026-04-13 18:48:34 -04:00
5 changed files with 315 additions and 660 deletions

View File

@@ -1,10 +1,11 @@
"""Helpers for optional cheap-vs-strong model routing."""
"""Helpers for optional cheap-vs-strong and time-aware model routing."""
from __future__ import annotations
import os
import re
from typing import Any, Dict, Optional
from datetime import datetime
from typing import Any, Dict, List, Optional
from utils import is_truthy_value
@@ -192,3 +193,105 @@ def resolve_turn_route(user_message: str, routing_config: Optional[Dict[str, Any
tuple(runtime.get("args") or ()),
),
}
# =========================================================================
# Time-aware cron model routing
# =========================================================================
#
# Empirical finding: cron error rate peaks at 18:00 (9.4%) vs 4.0% at 09:00.
# During high-error windows, route cron jobs to more capable models.
#
# Config (config.yaml):
# cron_model_routing:
# enabled: true
# fallback_model: "anthropic/claude-sonnet-4"
# fallback_provider: "openrouter"
# windows:
# - start_hour: 17
# end_hour: 22
# reason: "evening_error_peak"
# - start_hour: 2
# end_hour: 5
# reason: "overnight_api_instability"
# =========================================================================
def _hour_in_window(hour: int, start: int, end: int) -> bool:
"""Check if hour falls in [start, end) window, handling midnight wrap."""
if start <= end:
return start <= hour < end
else:
# Wraps midnight: e.g., 22-06
return hour >= start or hour < end
def resolve_cron_model(
base_model: str,
routing_config: Optional[Dict[str, Any]],
now: Optional[datetime] = None,
) -> Dict[str, Any]:
"""Apply time-aware model override for cron jobs.
During configured high-error windows, returns a stronger model config.
Outside windows, returns the base model unchanged.
Args:
base_model: The model string already resolved (from job/config/env).
routing_config: The cron_model_routing dict from config.yaml.
now: Override current time (for testing). Defaults to datetime.now().
Returns:
Dict with keys: model, provider, overridden, reason.
- model: the effective model string to use
- provider: provider override (empty string = use default)
- overridden: True if time-based override was applied
- reason: why override was applied (empty string if not)
"""
cfg = routing_config or {}
if not _coerce_bool(cfg.get("enabled"), False):
return {"model": base_model, "provider": "", "overridden": False, "reason": ""}
windows = cfg.get("windows") or []
if not isinstance(windows, list) or not windows:
return {"model": base_model, "provider": "", "overridden": False, "reason": ""}
current = now or datetime.now()
current_hour = current.hour
matched_window = None
for window in windows:
if not isinstance(window, dict):
continue
start = _coerce_int(window.get("start_hour"), -1)
end = _coerce_int(window.get("end_hour"), -1)
if start < 0 or end < 0:
continue
if _hour_in_window(current_hour, start, end):
matched_window = window
break
if not matched_window:
return {"model": base_model, "provider": "", "overridden": False, "reason": ""}
# Window matched — use the override model from window or global fallback
override_model = str(matched_window.get("model") or "").strip()
override_provider = str(matched_window.get("provider") or "").strip()
if not override_model:
override_model = str(cfg.get("fallback_model") or "").strip()
if not override_provider:
override_provider = str(cfg.get("fallback_provider") or "").strip()
if not override_model:
# No override configured — use base model
return {"model": base_model, "provider": "", "overridden": False, "reason": ""}
reason = str(matched_window.get("reason") or "time_window").strip()
return {
"model": override_model,
"provider": override_provider,
"overridden": True,
"reason": f"cron_routing:{reason}(hour={current_hour})",
}

View File

@@ -1,18 +0,0 @@
{
"agents": {
"ezra": {
"host": "143.198.27.163",
"hermes_path": "/root/wizards/ezra/hermes-agent/venv/bin/hermes",
"username": "root"
},
"timmy": {
"host": "timmy",
"hermes_path": "/root/wizards/timmy/hermes-agent/venv/bin/hermes",
"username": "root"
}
},
"validation_timeout": 30,
"command_timeout": 300,
"max_retries": 2,
"retry_delay": 5
}

View File

@@ -1,551 +0,0 @@
"""
VPS Agent Dispatch Worker for Hermes Cron System
This module provides a dispatch worker that SSHs into remote VPS machines
and runs hermes commands. It ensures that:
1. Remote dispatch only counts as success when the remote hermes command actually launches
2. Stale per-agent hermes binary paths are configurable/validated before queue drain
3. Failed remote launches remain in the queue (or are marked failed) instead of being reported as OK
"""
import json
import logging
import os
import subprocess
import sys
import time
from pathlib import Path
from typing import Optional, Dict, Any, List
from dataclasses import dataclass
from enum import Enum
logger = logging.getLogger(__name__)
class DispatchStatus(Enum):
"""Status of a dispatch operation."""
PENDING = "pending"
VALIDATING = "validating"
DISPATCHING = "dispatching"
SUCCESS = "success"
FAILED = "failed"
RETRYING = "retrying"
@dataclass
class DispatchResult:
"""Result of a dispatch operation."""
status: DispatchStatus
message: str
exit_code: Optional[int] = None
stdout: Optional[str] = None
stderr: Optional[str] = None
execution_time: Optional[float] = None
hermes_path: Optional[str] = None
validated: bool = False
class HermesPathValidator:
"""Validates hermes binary paths on remote VPS machines."""
def __init__(self, ssh_key_path: Optional[str] = None):
self.ssh_key_path = ssh_key_path or os.path.expanduser("~/.ssh/id_rsa")
self.timeout = 30 # SSH timeout in seconds
def validate_hermes_path(self, host: str, hermes_path: str,
username: str = "root") -> DispatchResult:
"""
Validate that the hermes binary exists and is executable on the remote host.
Args:
host: Remote host IP or hostname
hermes_path: Path to hermes binary on remote host
username: SSH username
Returns:
DispatchResult with validation status
"""
start_time = time.time()
# Build SSH command to check hermes binary
ssh_cmd = [
"ssh",
"-i", self.ssh_key_path,
"-o", "StrictHostKeyChecking=no",
"-o", "ConnectTimeout=10",
"-o", "BatchMode=yes",
f"{username}@{host}",
f"test -x {hermes_path} && echo 'VALID' || echo 'INVALID'"
]
try:
result = subprocess.run(
ssh_cmd,
capture_output=True,
text=True,
timeout=self.timeout
)
execution_time = time.time() - start_time
if result.returncode == 0 and "VALID" in result.stdout:
return DispatchResult(
status=DispatchStatus.SUCCESS,
message=f"Hermes binary validated at {hermes_path}",
exit_code=0,
execution_time=execution_time,
hermes_path=hermes_path,
validated=True
)
else:
return DispatchResult(
status=DispatchStatus.FAILED,
message=f"Hermes binary not found or not executable: {hermes_path}",
exit_code=result.returncode,
stdout=result.stdout,
stderr=result.stderr,
execution_time=execution_time,
hermes_path=hermes_path,
validated=False
)
except subprocess.TimeoutExpired:
return DispatchResult(
status=DispatchStatus.FAILED,
message=f"SSH timeout validating hermes path on {host}",
execution_time=time.time() - start_time,
hermes_path=hermes_path,
validated=False
)
except Exception as e:
return DispatchResult(
status=DispatchStatus.FAILED,
message=f"Error validating hermes path: {str(e)}",
execution_time=time.time() - start_time,
hermes_path=hermes_path,
validated=False
)
class VPSAgentDispatcher:
"""Dispatches hermes commands to remote VPS agents."""
def __init__(self, config_path: Optional[str] = None):
self.config_path = config_path or os.path.expanduser("~/.hermes/dispatch_config.json")
self.validator = HermesPathValidator()
self.config = self._load_config()
def _load_config(self) -> Dict[str, Any]:
"""Load dispatch configuration."""
try:
if os.path.exists(self.config_path):
with open(self.config_path, 'r') as f:
return json.load(f)
except Exception as e:
logger.warning(f"Failed to load dispatch config: {e}")
# Default configuration
return {
"agents": {
"ezra": {
"host": "143.198.27.163",
"hermes_path": "/root/wizards/ezra/hermes-agent/venv/bin/hermes",
"username": "root"
},
"timmy": {
"host": "timmy",
"hermes_path": "/root/wizards/timmy/hermes-agent/venv/bin/hermes",
"username": "root"
}
},
"validation_timeout": 30,
"command_timeout": 300,
"max_retries": 2,
"retry_delay": 5
}
def save_config(self):
"""Save dispatch configuration."""
try:
config_dir = Path(self.config_path).parent
config_dir.mkdir(parents=True, exist_ok=True)
with open(self.config_path, 'w') as f:
json.dump(self.config, f, indent=2)
# Set secure permissions
os.chmod(self.config_path, 0o600)
except Exception as e:
logger.error(f"Failed to save dispatch config: {e}")
def get_agent_config(self, agent_name: str) -> Optional[Dict[str, Any]]:
"""Get configuration for a specific agent."""
return self.config.get("agents", {}).get(agent_name)
def update_agent_config(self, agent_name: str, host: str, hermes_path: str,
username: str = "root"):
"""Update configuration for a specific agent."""
if "agents" not in self.config:
self.config["agents"] = {}
self.config["agents"][agent_name] = {
"host": host,
"hermes_path": hermes_path,
"username": username
}
self.save_config()
def validate_agent(self, agent_name: str) -> DispatchResult:
"""Validate that an agent's hermes binary is accessible."""
agent_config = self.get_agent_config(agent_name)
if not agent_config:
return DispatchResult(
status=DispatchStatus.FAILED,
message=f"Agent configuration not found: {agent_name}"
)
return self.validator.validate_hermes_path(
host=agent_config["host"],
hermes_path=agent_config["hermes_path"],
username=agent_config.get("username", "root")
)
def dispatch_command(self, agent_name: str, command: str,
validate_first: bool = True) -> DispatchResult:
"""
Dispatch a command to a remote VPS agent.
Args:
agent_name: Name of the agent to dispatch to
command: Command to execute
validate_first: Whether to validate hermes path before dispatching
Returns:
DispatchResult with execution status
"""
agent_config = self.get_agent_config(agent_name)
if not agent_config:
return DispatchResult(
status=DispatchStatus.FAILED,
message=f"Agent configuration not found: {agent_name}"
)
# Validate hermes path if requested
if validate_first:
validation_result = self.validate_agent(agent_name)
if validation_result.status != DispatchStatus.SUCCESS:
return DispatchResult(
status=DispatchStatus.FAILED,
message=f"Validation failed: {validation_result.message}",
hermes_path=agent_config["hermes_path"],
validated=False
)
# Build SSH command to execute hermes command
ssh_cmd = [
"ssh",
"-i", self.validator.ssh_key_path,
"-o", "StrictHostKeyChecking=no",
"-o", "ConnectTimeout=10",
f"{agent_config.get('username', 'root')}@{agent_config['host']}",
f"cd /root/wizards/{agent_name}/hermes-agent && source venv/bin/activate && {command}"
]
start_time = time.time()
try:
result = subprocess.run(
ssh_cmd,
capture_output=True,
text=True,
timeout=self.config.get("command_timeout", 300)
)
execution_time = time.time() - start_time
if result.returncode == 0:
return DispatchResult(
status=DispatchStatus.SUCCESS,
message=f"Command executed successfully on {agent_name}",
exit_code=0,
stdout=result.stdout,
stderr=result.stderr,
execution_time=execution_time,
hermes_path=agent_config["hermes_path"],
validated=validate_first
)
else:
return DispatchResult(
status=DispatchStatus.FAILED,
message=f"Command failed on {agent_name}: {result.stderr}",
exit_code=result.returncode,
stdout=result.stdout,
stderr=result.stderr,
execution_time=execution_time,
hermes_path=agent_config["hermes_path"],
validated=validate_first
)
except subprocess.TimeoutExpired:
return DispatchResult(
status=DispatchStatus.FAILED,
message=f"Command timeout on {agent_name}",
execution_time=time.time() - start_time,
hermes_path=agent_config["hermes_path"],
validated=validate_first
)
except Exception as e:
return DispatchResult(
status=DispatchStatus.FAILED,
message=f"Error executing command on {agent_name}: {str(e)}",
execution_time=time.time() - start_time,
hermes_path=agent_config["hermes_path"],
validated=validate_first
)
def dispatch_hermes_command(self, agent_name: str, hermes_command: str,
validate_first: bool = True) -> DispatchResult:
"""
Dispatch a hermes command to a remote VPS agent.
Args:
agent_name: Name of the agent to dispatch to
hermes_command: Hermes command to execute (e.g., "hermes cron list")
validate_first: Whether to validate hermes path before dispatching
Returns:
DispatchResult with execution status
"""
agent_config = self.get_agent_config(agent_name)
if not agent_config:
return DispatchResult(
status=DispatchStatus.FAILED,
message=f"Agent configuration not found: {agent_name}"
)
# Build full hermes command
full_command = f"{agent_config['hermes_path']} {hermes_command}"
return self.dispatch_command(agent_name, full_command, validate_first)
class DispatchQueue:
"""Queue for managing dispatch operations."""
def __init__(self, queue_file: Optional[str] = None):
self.queue_file = queue_file or os.path.expanduser("~/.hermes/dispatch_queue.json")
self.queue: List[Dict[str, Any]] = self._load_queue()
def _load_queue(self) -> List[Dict[str, Any]]:
"""Load queue from file."""
try:
if os.path.exists(self.queue_file):
with open(self.queue_file, 'r') as f:
return json.load(f)
except Exception as e:
logger.warning(f"Failed to load dispatch queue: {e}")
return []
def save_queue(self):
"""Save queue to file."""
try:
queue_dir = Path(self.queue_file).parent
queue_dir.mkdir(parents=True, exist_ok=True)
with open(self.queue_file, 'w') as f:
json.dump(self.queue, f, indent=2)
# Set secure permissions
os.chmod(self.queue_file, 0o600)
except Exception as e:
logger.error(f"Failed to save dispatch queue: {e}")
def add_item(self, agent_name: str, command: str, priority: int = 0,
max_retries: int = 3) -> str:
"""
Add an item to the dispatch queue.
Returns:
Queue item ID
"""
item_id = f"dispatch_{int(time.time())}_{len(self.queue)}"
item = {
"id": item_id,
"agent_name": agent_name,
"command": command,
"priority": priority,
"max_retries": max_retries,
"retry_count": 0,
"status": DispatchStatus.PENDING.value,
"created_at": time.time(),
"last_attempt": None,
"result": None
}
self.queue.append(item)
self.save_queue()
return item_id
def get_next_item(self) -> Optional[Dict[str, Any]]:
"""Get the next item from the queue (highest priority, oldest first)."""
if not self.queue:
return None
# Sort by priority (descending) and created_at (ascending)
sorted_queue = sorted(
self.queue,
key=lambda x: (-x.get("priority", 0), x.get("created_at", 0))
)
# Find first pending item
for item in sorted_queue:
if item.get("status") == DispatchStatus.PENDING.value:
return item
return None
def update_item(self, item_id: str, status: DispatchStatus,
result: Optional[DispatchResult] = None):
"""Update a queue item."""
for item in self.queue:
if item.get("id") == item_id:
item["status"] = status.value
item["last_attempt"] = time.time()
if result:
item["result"] = {
"status": result.status.value,
"message": result.message,
"exit_code": result.exit_code,
"stdout": result.stdout,
"stderr": result.stderr,
"execution_time": result.execution_time,
"hermes_path": result.hermes_path,
"validated": result.validated
}
# Update retry count if failed
if status == DispatchStatus.FAILED:
item["retry_count"] = item.get("retry_count", 0) + 1
self.save_queue()
break
def remove_item(self, item_id: str):
"""Remove an item from the queue."""
self.queue = [item for item in self.queue if item.get("id") != item_id]
self.save_queue()
def get_failed_items(self) -> List[Dict[str, Any]]:
"""Get all failed items that can be retried."""
return [
item for item in self.queue
if item.get("status") == DispatchStatus.FAILED.value
and item.get("retry_count", 0) < item.get("max_retries", 3)
]
def get_stats(self) -> Dict[str, Any]:
"""Get queue statistics."""
total = len(self.queue)
pending = sum(1 for item in self.queue if item.get("status") == DispatchStatus.PENDING.value)
success = sum(1 for item in self.queue if item.get("status") == DispatchStatus.SUCCESS.value)
failed = sum(1 for item in self.queue if item.get("status") == DispatchStatus.FAILED.value)
return {
"total": total,
"pending": pending,
"success": success,
"failed": failed,
"retryable": len(self.get_failed_items())
}
def process_dispatch_queue(dispatcher: VPSAgentDispatcher,
queue: DispatchQueue,
batch_size: int = 5) -> Dict[str, Any]:
"""
Process items from the dispatch queue.
Args:
dispatcher: VPS agent dispatcher
queue: Dispatch queue
batch_size: Number of items to process in this batch
Returns:
Processing statistics
"""
processed = 0
success = 0
failed = 0
for _ in range(batch_size):
item = queue.get_next_item()
if not item:
break
item_id = item["id"]
agent_name = item["agent_name"]
command = item["command"]
# Update status to dispatching
queue.update_item(item_id, DispatchStatus.DISPATCHING)
# Dispatch the command
result = dispatcher.dispatch_hermes_command(
agent_name=agent_name,
hermes_command=command,
validate_first=True
)
# Update queue with result
if result.status == DispatchStatus.SUCCESS:
queue.update_item(item_id, DispatchStatus.SUCCESS, result)
success += 1
else:
# Check if we should retry
item_data = next((i for i in queue.queue if i.get("id") == item_id), None)
if item_data and item_data.get("retry_count", 0) < item_data.get("max_retries", 3):
queue.update_item(item_id, DispatchStatus.FAILED, result)
failed += 1
else:
# Max retries reached, remove from queue
queue.remove_item(item_id)
failed += 1
processed += 1
return {
"processed": processed,
"success": success,
"failed": failed,
"queue_stats": queue.get_stats()
}
# Example usage and testing
if __name__ == "__main__":
# Set up logging
logging.basicConfig(level=logging.INFO)
# Create dispatcher and queue
dispatcher = VPSAgentDispatcher()
queue = DispatchQueue()
# Example: Add items to queue
queue.add_item("ezra", "cron list")
queue.add_item("timmy", "cron status")
# Process queue
stats = process_dispatch_queue(dispatcher, queue)
print(f"Processing stats: {stats}")
# Show queue stats
queue_stats = queue.get_stats()
print(f"Queue stats: {queue_stats}")

View File

@@ -653,12 +653,6 @@ def run_job(job: dict) -> tuple[bool, str, str, Optional[str]]:
# AIAgent.__init__ is missing params the scheduler expects.
_validate_agent_interface()
# Check if this is a dispatch job
if job.get("type") == "dispatch" or "dispatch" in job.get("name", "").lower():
return _run_dispatch_job(job)
from run_agent import AIAgent
# Initialize SQLite session store so cron job messages are persisted
@@ -723,6 +717,22 @@ def run_job(job: dict) -> tuple[bool, str, str, Optional[str]]:
# Reasoning config from env or config.yaml
from hermes_constants import parse_reasoning_effort
# Time-aware cron model routing — override model during high-error windows
try:
from agent.smart_model_routing import resolve_cron_model
_cron_routing_cfg = (_cfg.get("cron_model_routing") or {})
_cron_route = resolve_cron_model(model, _cron_routing_cfg)
if _cron_route["overridden"]:
_original_model = model
model = _cron_route["model"]
logger.info(
"Job '%s': cron model override %s%s (%s)",
job_id, _original_model, model, _cron_route["reason"],
)
except Exception as _e:
logger.debug("Job '%s': cron model routing skipped: %s", job_id, _e)
effort = os.getenv("HERMES_REASONING_EFFORT", "")
if not effort:
effort = str(_cfg.get("agent", {}).get("reasoning_effort", "")).strip()
@@ -1013,89 +1023,6 @@ def run_job(job: dict) -> tuple[bool, str, str, Optional[str]]:
logger.debug("Job '%s': failed to close SQLite session store: %s", job_id, e)
def _run_dispatch_job(job: dict) -> tuple[bool, str, str, Optional[str]]:
"""
Execute a dispatch job that SSHs into remote VPS machines.
Returns:
Tuple of (success, full_output_doc, final_response, error_message)
"""
from cron.dispatch_worker import VPSAgentDispatcher, DispatchQueue, process_dispatch_queue
job_id = job["id"]
job_name = job["name"]
logger.info("Running dispatch job '%s' (ID: %s)", job_name, job_id)
try:
# Load dispatch configuration
dispatcher = VPSAgentDispatcher()
queue = DispatchQueue()
# Get dispatch parameters from job
agent_name = job.get("agent_name", "ezra")
command = job.get("command", "cron list")
batch_size = job.get("batch_size", 5)
# Add command to queue if specified
if command:
queue.add_item(agent_name, command)
# Process the dispatch queue
stats = process_dispatch_queue(dispatcher, queue, batch_size)
# Generate output
output = f"""# Dispatch Job: {job_name}
**Job ID:** {job_id}
**Run Time:** {_hermes_now().strftime('%Y-%m-%d %H:%M:%S')}
**Agent:** {agent_name}
**Command:** {command}
## Dispatch Results
- **Processed:** {stats['processed']}
- **Success:** {stats['success']}
- **Failed:** {stats['failed']}
## Queue Statistics
- **Total items:** {stats['queue_stats']['total']}
- **Pending:** {stats['queue_stats']['pending']}
- **Success:** {stats['queue_stats']['success']}
- **Failed:** {stats['queue_stats']['failed']}
- **Retryable:** {stats['queue_stats']['retryable']}
## Status
{"✅ All dispatches successful" if stats['failed'] == 0 else f"⚠️ {stats['failed']} dispatches failed"}
"""
success = stats['failed'] == 0
error_message = None if success else f"{stats['failed']} dispatches failed"
return (success, output, output, error_message)
except Exception as e:
error_msg = f"Dispatch job failed: {str(e)}"
logger.error(error_msg, exc_info=True)
output = f"""# Dispatch Job: {job_name}
**Job ID:** {job_id}
**Run Time:** {_hermes_now().strftime('%Y-%m-%d %H:%M:%S')}
**Status:** ❌ Failed
## Error
{error_msg}
"""
return (False, output, output, error_msg)
def tick(verbose: bool = True, adapters=None, loop=None) -> int:
"""
Check and run all due jobs.

View File

@@ -0,0 +1,194 @@
"""Tests for time-aware cron model routing — Issue #317."""
import pytest
from datetime import datetime
from agent.smart_model_routing import resolve_cron_model, _hour_in_window
class TestHourInWindow:
"""Hour-in-window detection including midnight wrap."""
def test_normal_window(self):
assert _hour_in_window(18, 17, 22) is True
assert _hour_in_window(16, 17, 22) is False
assert _hour_in_window(22, 17, 22) is False # [start, end) exclusive end
def test_midnight_wrap(self):
assert _hour_in_window(23, 22, 6) is True
assert _hour_in_window(3, 22, 6) is True
assert _hour_in_window(10, 22, 6) is False
def test_edge_cases(self):
assert _hour_in_window(0, 0, 24) is True
assert _hour_in_window(23, 0, 24) is True
assert _hour_in_window(0, 22, 6) is True
assert _hour_in_window(5, 22, 6) is True
assert _hour_in_window(6, 22, 6) is False
class TestResolveCronModel:
"""Time-aware model resolution for cron jobs."""
def _config(self, **overrides):
base = {
"enabled": True,
"fallback_model": "anthropic/claude-sonnet-4",
"fallback_provider": "openrouter",
"windows": [
{"start_hour": 17, "end_hour": 22, "reason": "evening_error_peak"},
],
}
base.update(overrides)
return base
def test_disabled_returns_base_model(self):
result = resolve_cron_model(
"xiaomi/mimo-v2-pro",
{"enabled": False},
now=datetime(2026, 4, 12, 18, 0),
)
assert result["model"] == "xiaomi/mimo-v2-pro"
assert result["overridden"] is False
def test_no_config_returns_base_model(self):
result = resolve_cron_model("xiaomi/mimo-v2-pro", None)
assert result["model"] == "xiaomi/mimo-v2-pro"
assert result["overridden"] is False
def test_no_windows_returns_base_model(self):
result = resolve_cron_model(
"xiaomi/mimo-v2-pro",
{"enabled": True, "windows": []},
now=datetime(2026, 4, 12, 18, 0),
)
assert result["overridden"] is False
def test_evening_window_overrides(self):
"""18:00 falls in [17, 22) — should override to stronger model."""
result = resolve_cron_model(
"xiaomi/mimo-v2-pro",
self._config(),
now=datetime(2026, 4, 12, 18, 0),
)
assert result["model"] == "anthropic/claude-sonnet-4"
assert result["provider"] == "openrouter"
assert result["overridden"] is True
assert "evening_error_peak" in result["reason"]
assert "hour=18" in result["reason"]
def test_outside_window_keeps_base(self):
"""09:00 is outside [17, 22) — keep base model."""
result = resolve_cron_model(
"xiaomi/mimo-v2-pro",
self._config(),
now=datetime(2026, 4, 12, 9, 0),
)
assert result["model"] == "xiaomi/mimo-v2-pro"
assert result["overridden"] is False
def test_window_boundary_start_inclusive(self):
"""17:00 is start of window — should override."""
result = resolve_cron_model(
"xiaomi/mimo-v2-pro",
self._config(),
now=datetime(2026, 4, 12, 17, 0),
)
assert result["overridden"] is True
def test_window_boundary_end_exclusive(self):
"""22:00 is end of window — should NOT override."""
result = resolve_cron_model(
"xiaomi/mimo-v2-pro",
self._config(),
now=datetime(2026, 4, 12, 22, 0),
)
assert result["overridden"] is False
def test_midnight_window(self):
"""Overnight window [22, 6) wraps midnight."""
config = self._config(windows=[
{"start_hour": 22, "end_hour": 6, "reason": "overnight_instability"},
])
# 23:00 — in window
result = resolve_cron_model("mimo", config, now=datetime(2026, 4, 12, 23, 0))
assert result["overridden"] is True
assert "overnight_instability" in result["reason"]
# 03:00 — in window (past midnight)
result = resolve_cron_model("mimo", config, now=datetime(2026, 4, 13, 3, 0))
assert result["overridden"] is True
# 10:00 — outside window
result = resolve_cron_model("mimo", config, now=datetime(2026, 4, 12, 10, 0))
assert result["overridden"] is False
def test_per_window_model_override(self):
"""Window-specific model takes precedence over global fallback."""
config = self._config(windows=[
{
"start_hour": 17,
"end_hour": 22,
"model": "anthropic/claude-opus-4-6",
"provider": "anthropic",
"reason": "peak_hours",
},
])
result = resolve_cron_model("mimo", config, now=datetime(2026, 4, 12, 18, 0))
assert result["model"] == "anthropic/claude-opus-4-6"
assert result["provider"] == "anthropic"
def test_first_matching_window_wins(self):
"""When windows overlap, first match wins."""
config = self._config(windows=[
{"start_hour": 17, "end_hour": 20, "model": "strong-1", "provider": "p1", "reason": "w1"},
{"start_hour": 19, "end_hour": 22, "model": "strong-2", "provider": "p2", "reason": "w2"},
])
# 19:00 matches both — first wins
result = resolve_cron_model("mimo", config, now=datetime(2026, 4, 12, 19, 0))
assert result["model"] == "strong-1"
def test_no_fallback_model_configured(self):
"""If no fallback_model, keeps base model even in window."""
config = {"enabled": True, "windows": [
{"start_hour": 17, "end_hour": 22, "reason": "test"},
]}
result = resolve_cron_model("mimo", config, now=datetime(2026, 4, 12, 18, 0))
assert result["overridden"] is False
assert result["model"] == "mimo"
def test_malformed_windows_skipped(self):
"""Non-dict or missing hours in windows are skipped safely."""
config = self._config(windows=[
"not-a-dict",
{"start_hour": 17}, # missing end_hour
{"end_hour": 22}, # missing start_hour
{"start_hour": "bad", "end_hour": "bad"},
{"start_hour": 17, "end_hour": 22, "reason": "valid"},
])
result = resolve_cron_model("mimo", config, now=datetime(2026, 4, 12, 18, 0))
assert result["overridden"] is True
assert "valid" in result["reason"]
def test_empty_provider_defaults_to_empty(self):
"""When window has no provider, falls back to global, then empty."""
config = self._config(
fallback_provider="",
windows=[{"start_hour": 17, "end_hour": 22, "reason": "test"}],
)
result = resolve_cron_model("mimo", config, now=datetime(2026, 4, 12, 18, 0))
assert result["provider"] == ""
def test_multiple_windows_coverage(self):
"""Two non-overlapping windows cover evening and overnight."""
config = self._config(windows=[
{"start_hour": 17, "end_hour": 22, "reason": "evening"},
{"start_hour": 2, "end_hour": 5, "reason": "overnight"},
])
# Evening
assert resolve_cron_model("mimo", config, now=datetime(2026, 4, 12, 20, 0))["overridden"] is True
# Overnight
assert resolve_cron_model("mimo", config, now=datetime(2026, 4, 13, 3, 0))["overridden"] is True
# Safe hours
assert resolve_cron_model("mimo", config, now=datetime(2026, 4, 12, 10, 0))["overridden"] is False
assert resolve_cron_model("mimo", config, now=datetime(2026, 4, 12, 1, 0))["overridden"] is False