feat(data-ana): 完善学情诊断服务并添加ClickHouse降级模式
config.py ClickHouse连接改可选+加DEV_MODE/kafka_brokers clickhouse_client.py 降级模式: host为空时返回None main.py 端点先查ClickHouse降级返回骨架数据+新增errorbook 新增clickhouse-init.sql创建宽表和错题表 Gateway添加/analytics路由
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"""配置管理."""
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from pydantic_settings import BaseSettings
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class Settings(BaseSettings):
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"""应用配置."""
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"""应用配置.
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ClickHouse 连接参数为可选:当 clickhouse_host 为空字符串时,
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服务进入降级模式(查询方法返回 None / 空数据),保证服务可启动。
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"""
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port: int = 3006
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clickhouse_host: str = "localhost"
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# ClickHouse 连接(可选:留空则降级模式)
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clickhouse_host: str = ""
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clickhouse_port: int = 8123
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clickhouse_database: str = "edu_analytics"
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clickhouse_user: str = ""
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clickhouse_password: str = ""
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# 可观测性
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otel_endpoint: str = "http://localhost:4318"
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log_level: str = "info"
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# 开发模式开关("true"/"false")
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dev_mode: str = "false"
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# Kafka brokers(CDC 消费预留,暂不实现)
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kafka_brokers: str = "localhost:9092"
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model_config = {"env_file": ".env", "env_prefix": ""}
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