Files
webmail-client/backend/app/config.py
T
lukasandClaude Opus 4.8 19335116da sync-v2 step 5: activity tiers (hot/warm/cold)
Each owned account is tiered by the coordinator; the runner shapes its work to
match — correctness identical, only latency/socket cost differ.

- hot: persistent INBOX IDLE + secondary poll every POLL_WARM.
- warm: no persistent socket; transient INBOX+special poll every POLL_WARM.
- cold: same transient poll every POLL_COLD.
- engine: poll_all_loop (transient full poll); secondary_poll_loop interval is
  now a parameter; POLL_INTERVAL removed in favor of POLL_WARM/POLL_COLD.
- coordinator: tier eval every 120s from session heat (sess:active:{user}) +
  recent mail (max internal_date within TIER_HOT_ACTIVITY_H), with the
  HOT_BUDGET_PER_WORKER guard shedding least-recently-active session-less hot
  accounts; user.active event promotes a user's accounts to hot at once (≤5s).
- API: login + WS connect/ping publish user.active and refresh sess:active
  (TTL TIER_SESSION_GRACE_MIN). New sync:tier:{id} key, default warm on claim.
- config: POLL_WARM/POLL_COLD/TIER_*/HOT_BUDGET_PER_WORKER.
- tests: 5 tier tests (session/recent-mail promotion, cold, user.active,
  budget demotion) alongside the lease/lifecycle acceptance tests.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-07-19 07:03:54 +02:00

64 lines
3.0 KiB
Python

"""Application configuration.
SPEC §14: the complete env list is read exactly once here (pydantic-settings).
No ``os.environ`` access is permitted anywhere else in the codebase.
"""
from __future__ import annotations
from functools import lru_cache
from pydantic import Field
from pydantic_settings import BaseSettings, SettingsConfigDict
class Settings(BaseSettings):
"""All runtime configuration, sourced from the environment (SPEC §14)."""
model_config = SettingsConfigDict(env_file=None, extra="ignore")
app_domain: str = Field(alias="APP_DOMAIN")
database_url: str = Field(alias="DATABASE_URL")
redis_url: str = Field(alias="REDIS_URL")
master_key: str = Field(alias="MASTER_KEY") # 32 bytes, base64
blob_root: str = Field(default="./var/blobs", alias="BLOB_ROOT")
search_backend: str = Field(default="pg", alias="SEARCH_BACKEND")
meili_url: str = Field(default="http://127.0.0.1:7700", alias="MEILI_URL")
meili_key: str = Field(default="", alias="MEILI_KEY")
undo_seconds: int = Field(default=10, alias="UNDO_SECONDS")
session_ttl_days: int = Field(default=30, alias="SESSION_TTL_DAYS")
max_attachment_mb: int = Field(default=25, alias="MAX_ATTACHMENT_MB")
log_level: str = Field(default="INFO", alias="LOG_LEVEL")
# --- Sync engine v2 (workers layer) --------------------------------------
# Worker role: "sync" (lease-owned account runners) | "jobs" (arq consumer)
# | "all" (both, single-process dev default).
worker_role: str = Field(default="all", alias="WORKER_ROLE")
interactive_concurrency: int = Field(default=20, alias="INTERACTIVE_CONCURRENCY")
bulk_concurrency: int = Field(default=2, alias="BULK_CONCURRENCY")
# Lease protocol (§2): account ownership across sync workers.
max_accounts_per_worker: int = Field(default=400, alias="MAX_ACCOUNTS_PER_WORKER")
lease_ttl: int = Field(default=60, alias="LEASE_TTL")
lease_renew: int = Field(default=20, alias="LEASE_RENEW")
# Activity tiers (§5): hot = persistent IDLE, warm/cold = transient polls.
poll_warm: int = Field(default=180, alias="POLL_WARM")
poll_cold: int = Field(default=900, alias="POLL_COLD")
tier_hot_activity_h: int = Field(default=24, alias="TIER_HOT_ACTIVITY_H")
tier_session_grace_min: int = Field(default=30, alias="TIER_SESSION_GRACE_MIN")
tier_cold_after_d: int = Field(default=3, alias="TIER_COLD_AFTER_D")
hot_budget_per_worker: int = Field(default=250, alias="HOT_BUDGET_PER_WORKER")
oauth_google_client_id: str = Field(default="", alias="OAUTH_GOOGLE_CLIENT_ID")
oauth_google_client_secret: str = Field(default="", alias="OAUTH_GOOGLE_CLIENT_SECRET")
oauth_ms_client_id: str = Field(default="", alias="OAUTH_MS_CLIENT_ID")
oauth_ms_client_secret: str = Field(default="", alias="OAUTH_MS_CLIENT_SECRET")
@lru_cache(maxsize=1)
def get_settings() -> Settings:
"""Return the process-wide settings singleton."""
return Settings() # values are sourced from the environment