Add hybrid APScheduler + PostgreSQL-based task scheduling system with minute-based execution and priority queue.
Core features:
- Minute-based scheduling with cron-like patterns (-1 = wildcard)
- Priority queue system (1-100, lower = higher priority)
- Concurrent execution (max 5 tasks simultaneously)
- Full REST API for task management (CRUD operations)
- Task execution tracking with audit trail
- API key authentication (Bearer token)
- Health checks and system statistics
Architecture:
- APScheduler runs every minute
- Queries PostgreSQL for tasks scheduled for current minute
- Executes tasks concurrently by priority
- Records execution history in database
Database schema:
- scheduled_tasks: Task definitions/templates
- task_executions: Individual execution records
Technical stack:
- FastAPI for REST API
- APScheduler for scheduling
- PostgreSQL for persistence
- Pydantic for configuration
Endpoints:
- POST/GET/PUT/DELETE /tasks - Task management
- POST /tasks/{name}/trigger - Manual execution
- GET /executions - Execution history
- GET /health - Health check
- GET /stats - System statistics
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
74 lines
2.9 KiB
Python
74 lines
2.9 KiB
Python
"""
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Configuration management for The Scheduler.
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Uses Pydantic BaseSettings for type-safe environment variable loading.
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"""
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from functools import lru_cache
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from pydantic_settings import BaseSettings
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from pydantic import Field
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class Settings(BaseSettings):
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"""Application settings loaded from environment variables."""
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# Application
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app_name: str = Field(default="The Scheduler", alias="APP_NAME")
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app_version: str = Field(default="1.0.0", alias="APP_VERSION")
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debug: bool = Field(default=False, alias="DEBUG")
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host: str = Field(default="0.0.0.0", alias="HOST")
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port: int = Field(default=8090, alias="PORT")
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log_level: str = Field(default="INFO", alias="LOG_LEVEL")
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# Security
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scheduler_api_key: str = Field(default="dev-key-change-me", alias="SCHEDULER_API_KEY")
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# PostgreSQL
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postgres_host: str = Field(default="postgres-shared", alias="POSTGRES_HOST")
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postgres_port: int = Field(default=5432, alias="POSTGRES_PORT")
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postgres_db: str = Field(default="library_scheduler", alias="POSTGRES_DB")
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postgres_user: str = Field(default="library_scheduler_user", alias="POSTGRES_USER")
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postgres_password: str = Field(default="", alias="POSTGRES_PASSWORD")
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# Redis
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redis_host: str = Field(default="redis-shared", alias="REDIS_HOST")
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redis_port: int = Field(default=6379, alias="REDIS_PORT")
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redis_db: int = Field(default=3, alias="REDIS_DB")
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# Gitea
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gitea_url: str = Field(default="http://gitea:3000", alias="GITEA_URL")
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gitea_user: str = Field(default="library", alias="GITEA_USER")
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gitea_password: str = Field(default="", alias="GITEA_PASSWORD")
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gitea_ssh_host: str = Field(default="gitea", alias="GITEA_SSH_HOST")
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gitea_ssh_port: int = Field(default=22, alias="GITEA_SSH_PORT")
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# Backup Configuration
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backup_retention_daily: int = Field(default=7, alias="BACKUP_RETENTION_DAILY")
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backup_retention_weekly: int = Field(default=4, alias="BACKUP_RETENTION_WEEKLY")
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backup_retention_monthly: int = Field(default=12, alias="BACKUP_RETENTION_MONTHLY")
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# Documentation Mirroring
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docs_mirror_path: str = Field(default="/docs-mirror", alias="DOCS_MIRROR_PATH")
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docs_check_interval: int = Field(default=21600, alias="DOCS_CHECK_INTERVAL") # 6 hours
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@property
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def database_url(self) -> str:
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"""PostgreSQL connection URL for APScheduler."""
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return f"postgresql://{self.postgres_user}:{self.postgres_password}@{self.postgres_host}:{self.postgres_port}/{self.postgres_db}"
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@property
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def redis_url(self) -> str:
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"""Redis connection URL."""
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return f"redis://{self.redis_host}:{self.redis_port}/{self.redis_db}"
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class Config:
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env_file = ".env"
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case_sensitive = False
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@lru_cache
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def get_settings() -> Settings:
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"""
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Get cached settings instance.
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Using lru_cache ensures we only create one Settings instance.
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"""
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return Settings()
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