Initial commit: LogHive centralized log management system

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

backend/app/models/__init__.py

@@ -0,0 +1,5 @@
+from app.models.project import Project
+from app.models.alert import AlertRule, AlertHistory
+from app.models.log import LogEntry
+
+__all__ = ["Project", "AlertRule", "AlertHistory", "LogEntry"]

backend/app/models/alert.py

@@ -0,0 +1,71 @@
+"""Alert models — rules and history."""
+
+import uuid
+from datetime import datetime, timezone
+
+from sqlalchemy import String, Integer, Float, Boolean, DateTime, Text, Enum as SAEnum
+from sqlalchemy.orm import Mapped, mapped_column
+import enum
+
+from app.database import Base
+
+
+class AlertLevel(str, enum.Enum):
+    INFO = "info"
+    WARNING = "warning"
+    CRITICAL = "critical"
+
+
+class AlertOperator(str, enum.Enum):
+    GT = "gt"
+    GTE = "gte"
+    LT = "lt"
+    LTE = "lte"
+    EQ = "eq"
+
+
+class AlertRule(Base):
+    __tablename__ = "alert_rules"
+
+    id: Mapped[str] = mapped_column(
+        String(36), primary_key=True, default=lambda: str(uuid.uuid4())
+    )
+    project_id: Mapped[str] = mapped_column(String(36), nullable=False, index=True)
+    name: Mapped[str] = mapped_column(String(128), nullable=False)
+    level: Mapped[AlertLevel] = mapped_column(
+        SAEnum(AlertLevel), default=AlertLevel.WARNING
+    )
+    field: Mapped[str] = mapped_column(
+        String(64), nullable=False, default="level"
+    )  # log field to evaluate
+    operator: Mapped[AlertOperator] = mapped_column(
+        SAEnum(AlertOperator), default=AlertOperator.GTE
+    )
+    threshold: Mapped[float] = mapped_column(Float, nullable=False)
+    window_minutes: Mapped[int] = mapped_column(Integer, default=5)
+    is_enabled: Mapped[bool] = mapped_column(Boolean, default=True)
+    notify_channels: Mapped[str] = mapped_column(
+        String(256), default=""
+    )  # comma-separated
+    created_at: Mapped[datetime] = mapped_column(
+        DateTime(timezone=True), default=lambda: datetime.now(timezone.utc)
+    )
+
+
+class AlertHistory(Base):
+    __tablename__ = "alert_history"
+
+    id: Mapped[str] = mapped_column(
+        String(36), primary_key=True, default=lambda: str(uuid.uuid4())
+    )
+    rule_id: Mapped[str] = mapped_column(
+        String(36), nullable=False, index=True
+    )
+    project_id: Mapped[str] = mapped_column(String(36), nullable=False, index=True)
+    level: Mapped[AlertLevel] = mapped_column(SAEnum(AlertLevel))
+    message: Mapped[str] = mapped_column(Text, nullable=False)
+    triggered_value: Mapped[float] = mapped_column(Float, nullable=True)
+    is_acknowledged: Mapped[bool] = mapped_column(Boolean, default=False)
+    triggered_at: Mapped[datetime] = mapped_column(
+        DateTime(timezone=True), default=lambda: datetime.now(timezone.utc)
+    )

backend/app/models/log.py

@@ -0,0 +1,37 @@
+"""Log entry model — stored in PostgreSQL."""
+
+import uuid
+from datetime import datetime, timezone
+
+from sqlalchemy import DateTime, Index, Integer, String, Text
+from sqlalchemy.dialects.postgresql import JSONB
+from sqlalchemy.orm import Mapped, mapped_column
+
+from app.database import Base
+
+
+class LogEntry(Base):
+    __tablename__ = "log_entries"
+
+    id: Mapped[str] = mapped_column(
+        String(36), primary_key=True, default=lambda: str(uuid.uuid4())
+    )
+    project_id: Mapped[str] = mapped_column(String(36), nullable=False, index=True)
+    project_name: Mapped[str] = mapped_column(String(128), nullable=False, index=True)
+    timestamp: Mapped[datetime] = mapped_column(
+        DateTime(timezone=True), nullable=False, index=True,
+        default=lambda: datetime.now(timezone.utc),
+    )
+    level: Mapped[str] = mapped_column(String(16), nullable=False, index=True)
+    logger: Mapped[str] = mapped_column(String(128), default="root")
+    message: Mapped[str] = mapped_column(Text, nullable=False)
+    module: Mapped[str | None] = mapped_column(String(256), nullable=True)
+    function: Mapped[str | None] = mapped_column(String(128), nullable=True)
+    line_no: Mapped[int | None] = mapped_column(Integer, nullable=True)
+    trace_id: Mapped[str | None] = mapped_column(String(64), nullable=True, index=True)
+    exception: Mapped[str | None] = mapped_column(Text, nullable=True)
+    extra: Mapped[dict] = mapped_column(JSONB, default=dict)
+
+    __table_args__ = (
+        Index("ix_log_entries_project_time", "project_id", timestamp.desc()),
+    )

backend/app/models/project.py

@@ -0,0 +1,34 @@
+"""Project model — represents an external service that pushes logs."""
+
+import uuid
+from datetime import datetime, timezone
+
+from sqlalchemy import String, Boolean, DateTime, Text
+from sqlalchemy.orm import Mapped, mapped_column
+
+from app.database import Base
+
+
+class Project(Base):
+    __tablename__ = "projects"
+
+    id: Mapped[str] = mapped_column(
+        String(36), primary_key=True, default=lambda: str(uuid.uuid4())
+    )
+    name: Mapped[str] = mapped_column(String(128), unique=True, nullable=False)
+    description: Mapped[str] = mapped_column(Text, default="")
+    api_key: Mapped[str] = mapped_column(
+        String(64), unique=True, nullable=False, default=lambda: uuid.uuid4().hex
+    )
+    is_active: Mapped[bool] = mapped_column(Boolean, default=True)
+    created_at: Mapped[datetime] = mapped_column(
+        DateTime(timezone=True), default=lambda: datetime.now(timezone.utc)
+    )
+    updated_at: Mapped[datetime] = mapped_column(
+        DateTime(timezone=True),
+        default=lambda: datetime.now(timezone.utc),
+        onupdate=lambda: datetime.now(timezone.utc),
+    )
+
+    def __repr__(self) -> str:
+        return f"<Project {self.name}>"