feat: migration 0002 for hosts, monitors, metrics, and alert tables

fablednetmon/migrations/env.py

@@ -5,6 +5,7 @@ from sqlalchemy.engine import Connection
 from sqlalchemy.ext.asyncio import async_engine_from_config
 from alembic import context
 from fablednetmon.models.base import Base
+import fablednetmon.models  # noqa: F401 — registers all models in metadata
 
 config = context.config
 if config.config_file_name is not None:

fablednetmon/migrations/versions/0002_core_monitors.py

@@ -0,0 +1,140 @@
+"""Core monitors, metrics, and alert tables
+
+Revision ID: 0002_core_monitors
+Revises: 0001_core_initial
+Create Date: 2026-03-17
+"""
+from typing import Sequence, Union
+from alembic import op
+import sqlalchemy as sa
+
+revision: str = "0002_core_monitors"
+down_revision: Union[str, None] = "0001_core_initial"
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+    # hosts
+    op.create_table(
+        "hosts",
+        sa.Column("id", sa.String(36), primary_key=True),
+        sa.Column("name", sa.String(128), nullable=False),
+        sa.Column("address", sa.String(255), nullable=False),
+        sa.Column(
+            "probe_type",
+            sa.Enum("tcp", "icmp", name="probetype"),
+            nullable=False,
+            server_default="tcp",
+        ),
+        sa.Column("probe_port", sa.Integer, nullable=False, server_default="80"),
+        sa.Column("ping_enabled", sa.Boolean, nullable=False, server_default="true"),
+        sa.Column("dns_enabled", sa.Boolean, nullable=False, server_default="false"),
+        sa.Column("dns_expected_ip", sa.String(255), nullable=True),
+        sa.Column("poll_interval_seconds", sa.Integer, nullable=True),
+        sa.Column("created_at", sa.DateTime(timezone=True), nullable=False),
+    )
+
+    # ping_results
+    op.create_table(
+        "ping_results",
+        sa.Column("id", sa.String(36), primary_key=True),
+        sa.Column("host_id", sa.String(36), sa.ForeignKey("hosts.id", ondelete="CASCADE"), nullable=False),
+        sa.Column("probed_at", sa.DateTime(timezone=True), nullable=False),
+        sa.Column("status", sa.Enum("up", "down", name="pingstatus"), nullable=False),
+        sa.Column("response_time_ms", sa.Float, nullable=True),
+    )
+
+    # dns_results
+    op.create_table(
+        "dns_results",
+        sa.Column("id", sa.String(36), primary_key=True),
+        sa.Column("host_id", sa.String(36), sa.ForeignKey("hosts.id", ondelete="CASCADE"), nullable=False),
+        sa.Column("resolved_at", sa.DateTime(timezone=True), nullable=False),
+        sa.Column("status", sa.Enum("resolved", "failed", name="dnsstatus"), nullable=False),
+        sa.Column("resolved_ip", sa.String(255), nullable=True),
+    )
+
+    # plugin_metrics
+    op.create_table(
+        "plugin_metrics",
+        sa.Column("id", sa.String(36), primary_key=True),
+        sa.Column("source_module", sa.String(64), nullable=False),
+        sa.Column("resource_name", sa.String(255), nullable=False),
+        sa.Column("metric_name", sa.String(128), nullable=False),
+        sa.Column("value", sa.Float, nullable=False),
+        sa.Column("recorded_at", sa.DateTime(timezone=True), nullable=False),
+    )
+
+    # alert_rules
+    op.create_table(
+        "alert_rules",
+        sa.Column("id", sa.String(36), primary_key=True),
+        sa.Column("name", sa.String(128), nullable=False),
+        sa.Column("source_module", sa.String(64), nullable=False),
+        sa.Column("resource_name", sa.String(255), nullable=False),
+        sa.Column("metric_name", sa.String(128), nullable=False),
+        sa.Column(
+            "operator",
+            sa.Enum(">", "<", ">=", "<=", "==", "!=", name="alertoperator"),
+            nullable=False,
+        ),
+        sa.Column("threshold", sa.Float, nullable=False),
+        sa.Column("consecutive_failures_required", sa.Integer, nullable=False, server_default="1"),
+        sa.Column("enabled", sa.Boolean, nullable=False, server_default="true"),
+        sa.Column("created_by", sa.String(36), sa.ForeignKey("users.id", ondelete="RESTRICT"), nullable=False),
+        sa.Column("created_at", sa.DateTime(timezone=True), nullable=False),
+    )
+
+    # alert_states
+    op.create_table(
+        "alert_states",
+        sa.Column("id", sa.String(36), primary_key=True),
+        sa.Column(
+            "rule_id",
+            sa.String(36),
+            sa.ForeignKey("alert_rules.id", ondelete="CASCADE"),
+            nullable=False,
+            unique=True,
+        ),
+        sa.Column(
+            "state",
+            sa.Enum("inactive", "pending", "firing", "acknowledged", "resolved", name="alertstateenum"),
+            nullable=False,
+            server_default="inactive",
+        ),
+        sa.Column("consecutive_failure_count", sa.Integer, nullable=False, server_default="0"),
+        sa.Column("last_transition_at", sa.DateTime(timezone=True), nullable=False),
+        sa.Column("acknowledged_by", sa.String(36), sa.ForeignKey("users.id", ondelete="SET NULL"), nullable=True),
+        sa.Column("acknowledged_at", sa.DateTime(timezone=True), nullable=True),
+    )
+
+    # alert_events
+    op.create_table(
+        "alert_events",
+        sa.Column("id", sa.String(36), primary_key=True),
+        sa.Column("rule_id", sa.String(36), sa.ForeignKey("alert_rules.id", ondelete="CASCADE"), nullable=False),
+        sa.Column("from_state", sa.String(32), nullable=False),
+        sa.Column("to_state", sa.String(32), nullable=False),
+        sa.Column("metric_value", sa.Float, nullable=False),
+        sa.Column("transitioned_at", sa.DateTime(timezone=True), nullable=False),
+        sa.Column("email_sent", sa.Boolean, nullable=True),
+        sa.Column("email_error", sa.Text, nullable=True),
+        sa.Column("webhook_sent", sa.Boolean, nullable=True),
+        sa.Column("webhook_error", sa.Text, nullable=True),
+    )
+
+
+def downgrade() -> None:
+    op.drop_table("alert_events")
+    op.drop_table("alert_states")
+    op.drop_table("alert_rules")
+    op.drop_table("plugin_metrics")
+    op.drop_table("dns_results")
+    op.drop_table("ping_results")
+    op.drop_table("hosts")
+    op.execute("DROP TYPE IF EXISTS alertstateenum")
+    op.execute("DROP TYPE IF EXISTS alertoperator")
+    op.execute("DROP TYPE IF EXISTS dnsstatus")
+    op.execute("DROP TYPE IF EXISTS pingstatus")
+    op.execute("DROP TYPE IF EXISTS probetype")