Init first files

backend/app/models/__init__.py

@@ -0,0 +1,3 @@
+from app.models.models import AuditLog, Metric, QueryStat, Target, User
+
+__all__ = ["User", "Target", "Metric", "QueryStat", "AuditLog"]

backend/app/models/models.py

@@ -0,0 +1,75 @@
+from datetime import datetime
+from sqlalchemy import JSON, DateTime, Float, ForeignKey, Integer, String, Text, func
+from sqlalchemy.orm import Mapped, mapped_column, relationship
+from app.core.db import Base
+
+
+class User(Base):
+    __tablename__ = "users"
+
+    id: Mapped[int] = mapped_column(Integer, primary_key=True)
+    email: Mapped[str] = mapped_column(String(255), unique=True, index=True, nullable=False)
+    password_hash: Mapped[str] = mapped_column(String(255), nullable=False)
+    role: Mapped[str] = mapped_column(String(20), nullable=False, default="viewer")
+    created_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), server_default=func.now(), nullable=False)
+
+    audit_logs: Mapped[list["AuditLog"]] = relationship(back_populates="user")
+
+
+class Target(Base):
+    __tablename__ = "targets"
+
+    id: Mapped[int] = mapped_column(Integer, primary_key=True)
+    name: Mapped[str] = mapped_column(String(120), unique=True, index=True, nullable=False)
+    host: Mapped[str] = mapped_column(String(255), nullable=False)
+    port: Mapped[int] = mapped_column(Integer, nullable=False, default=5432)
+    dbname: Mapped[str] = mapped_column(String(120), nullable=False)
+    username: Mapped[str] = mapped_column(String(120), nullable=False)
+    encrypted_password: Mapped[str] = mapped_column(Text, nullable=False)
+    sslmode: Mapped[str] = mapped_column(String(20), nullable=False, default="prefer")
+    tags: Mapped[dict] = mapped_column(JSON, nullable=False, default=dict)
+    created_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), server_default=func.now(), nullable=False)
+
+    metrics: Mapped[list["Metric"]] = relationship(back_populates="target", cascade="all, delete-orphan")
+    query_stats: Mapped[list["QueryStat"]] = relationship(back_populates="target", cascade="all, delete-orphan")
+
+
+class Metric(Base):
+    __tablename__ = "metrics"
+
+    id: Mapped[int] = mapped_column(Integer, primary_key=True)
+    target_id: Mapped[int] = mapped_column(ForeignKey("targets.id", ondelete="CASCADE"), nullable=False, index=True)
+    ts: Mapped[datetime] = mapped_column(DateTime(timezone=True), nullable=False, server_default=func.now(), index=True)
+    metric_name: Mapped[str] = mapped_column(String(120), nullable=False, index=True)
+    value: Mapped[float] = mapped_column(Float, nullable=False)
+    labels: Mapped[dict] = mapped_column(JSON, nullable=False, default=dict)
+
+    target: Mapped[Target] = relationship(back_populates="metrics")
+
+
+class QueryStat(Base):
+    __tablename__ = "query_stats"
+
+    id: Mapped[int] = mapped_column(Integer, primary_key=True)
+    target_id: Mapped[int] = mapped_column(ForeignKey("targets.id", ondelete="CASCADE"), nullable=False, index=True)
+    ts: Mapped[datetime] = mapped_column(DateTime(timezone=True), nullable=False, server_default=func.now(), index=True)
+    queryid: Mapped[str] = mapped_column(String(100), nullable=False)
+    calls: Mapped[int] = mapped_column(Integer, nullable=False, default=0)
+    total_time: Mapped[float] = mapped_column(Float, nullable=False, default=0.0)
+    mean_time: Mapped[float] = mapped_column(Float, nullable=False, default=0.0)
+    rows: Mapped[int] = mapped_column(Integer, nullable=False, default=0)
+    query_text: Mapped[str | None] = mapped_column(Text, nullable=True)
+
+    target: Mapped[Target] = relationship(back_populates="query_stats")
+
+
+class AuditLog(Base):
+    __tablename__ = "audit_logs"
+
+    id: Mapped[int] = mapped_column(Integer, primary_key=True)
+    ts: Mapped[datetime] = mapped_column(DateTime(timezone=True), nullable=False, server_default=func.now(), index=True)
+    user_id: Mapped[int | None] = mapped_column(ForeignKey("users.id"), nullable=True, index=True)
+    action: Mapped[str] = mapped_column(String(120), nullable=False)
+    payload: Mapped[dict] = mapped_column(JSON, nullable=False, default=dict)
+
+    user: Mapped[User | None] = relationship(back_populates="audit_logs")