feat(docker): schema for lifecycle events + swarm topology

Adds the milestone-77 storage that doesn't fit on the per-container row: * docker_events — lifecycle (start/stop/die/oom/health_change), to be derived by diffing consecutive host snapshots; host-scoped, indexed for timeline lookups (host_id, container_name, at) and retention pruning (at). * docker_swarm_services / docker_swarm_nodes — manager-reported Swarm topology (desired-vs-running replicas, node role/availability/status). Migration docker_004 extends the docker branch (down_revision docker_003); purely additive, no DROP+recreate. event/mode/role are plain strings (no CHECK whitelist), matching how docker_containers models status. Integration guard asserts the three new host-scoped tables exist. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_016Jg27rgypiW2efULXJDtMC
2026-06-18 20:47:46 -04:00
parent 82c3d2cf36
commit fee654b53a
3 changed files with 185 additions and 0 deletions
@@ -0,0 +1,77 @@
+"""Docker lifecycle events + swarm topology tables
+
+Adds the storage for milestone-77 monitoring depth that doesn't fit on the
+per-container row:
+
+  * docker_events — lifecycle (start/stop/die/oom/health_change) derived by
+    diffing consecutive host snapshots; host-scoped, indexed for both timeline
+    lookups (host_id, container_name, at) and retention pruning (at).
+  * docker_swarm_services / docker_swarm_nodes — manager-reported Swarm
+    topology (desired-vs-running replicas, node role/availability/status).
+
+All new tables — purely additive, so no DROP+recreate. `event`/`mode`/`role`
+etc. are plain strings (no CHECK whitelist), matching how docker_containers
+models `status`; keeps the value sets open without a migration per addition
+(so rule 36 doesn't apply here).
+
+Revision ID: docker_004_events_swarm
+Revises: docker_003_container_enrichment
+Create Date: 2026-06-19
+"""
+from typing import Sequence, Union
+from alembic import op
+import sqlalchemy as sa
+
+revision: str = "docker_004_events_swarm"
+down_revision: Union[str, None] = "docker_003_container_enrichment"
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+    op.create_table(
+        "docker_events",
+        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("container_name", sa.String(255), nullable=False),
+        sa.Column("event", sa.String(16), nullable=False),
+        sa.Column("detail", sa.String(255), nullable=True),
+        sa.Column("at", sa.DateTime(timezone=True), nullable=False),
+    )
+    op.create_index("ix_docker_events_host_container_time", "docker_events",
+                    ["host_id", "container_name", "at"])
+    op.create_index("ix_docker_events_at", "docker_events", ["at"])
+
+    op.create_table(
+        "docker_swarm_services",
+        sa.Column("host_id", sa.String(36),
+                  sa.ForeignKey("hosts.id", ondelete="CASCADE"), primary_key=True),
+        sa.Column("service_name", sa.String(255), primary_key=True),
+        sa.Column("mode", sa.String(16), nullable=False, server_default="replicated"),
+        sa.Column("desired", sa.Integer, nullable=False, server_default="0"),
+        sa.Column("running", sa.Integer, nullable=False, server_default="0"),
+        sa.Column("image", sa.String(512), nullable=True),
+        sa.Column("updated_at", sa.DateTime(timezone=True), nullable=False),
+    )
+
+    op.create_table(
+        "docker_swarm_nodes",
+        sa.Column("host_id", sa.String(36),
+                  sa.ForeignKey("hosts.id", ondelete="CASCADE"), primary_key=True),
+        sa.Column("node_id", sa.String(64), primary_key=True),
+        sa.Column("hostname", sa.String(255), nullable=False, server_default=""),
+        sa.Column("role", sa.String(16), nullable=False, server_default="worker"),
+        sa.Column("availability", sa.String(16), nullable=False, server_default="active"),
+        sa.Column("status", sa.String(16), nullable=False, server_default="unknown"),
+        sa.Column("leader", sa.Boolean, nullable=False, server_default=sa.false()),
+        sa.Column("updated_at", sa.DateTime(timezone=True), nullable=False),
+    )
+
+
+def downgrade() -> None:
+    op.drop_table("docker_swarm_nodes")
+    op.drop_table("docker_swarm_services")
+    op.drop_index("ix_docker_events_at", table_name="docker_events")
+    op.drop_index("ix_docker_events_host_container_time", table_name="docker_events")
+    op.drop_table("docker_events")