144 lines
5.5 KiB
Python
144 lines
5.5 KiB
Python
"""baseline schema (ADR-0004)
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Revision ID: 0001_baseline
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Revises:
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Create Date: 2026-05-26
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"""
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from collections.abc import Sequence
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from alembic import op
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revision: str = "0001_baseline"
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down_revision: str | None = None
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branch_labels: str | Sequence[str] | None = None
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depends_on: str | Sequence[str] | None = None
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def upgrade() -> None:
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op.execute(
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"""
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CREATE TABLE agents (
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agent_id TEXT PRIMARY KEY,
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hostname TEXT NOT NULL,
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status TEXT NOT NULL CHECK (status IN ('alive','stale','dead')) DEFAULT 'alive',
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last_seen_at TIMESTAMPTZ NOT NULL,
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features JSONB NOT NULL DEFAULT jsonb_build_object('push', false, 'metrics', false),
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labels JSONB NOT NULL DEFAULT '{}'::jsonb,
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created_at TIMESTAMPTZ NOT NULL DEFAULT now()
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);
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"""
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)
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op.execute("CREATE INDEX agents_status_idx ON agents (status);")
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op.execute("CREATE INDEX agents_last_seen_idx ON agents (last_seen_at);")
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op.execute(
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"""
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CREATE TABLE checks (
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agent_id TEXT NOT NULL REFERENCES agents(agent_id) ON DELETE CASCADE,
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check_id TEXT NOT NULL,
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status TEXT NOT NULL CHECK (status IN ('ok','warning','critical','unknown')),
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exit_code INTEGER NOT NULL,
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last_observed_at TIMESTAMPTZ NOT NULL,
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last_event_id UUID NOT NULL,
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incident_key TEXT NOT NULL,
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summary TEXT,
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PRIMARY KEY (agent_id, check_id)
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);
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"""
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)
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op.execute("CREATE INDEX checks_status_idx ON checks (status);")
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# events: partitioned by RANGE(received_at). Partition key is part of PK per Postgres.
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# Global idempotency by event_id is enforced via event_ingest_dedup, not this table.
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op.execute(
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"""
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CREATE TABLE events (
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event_id UUID NOT NULL,
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agent_id TEXT NOT NULL,
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check_id TEXT NOT NULL,
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observed_at TIMESTAMPTZ NOT NULL,
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received_at TIMESTAMPTZ NOT NULL DEFAULT now(),
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status TEXT NOT NULL CHECK (status IN ('ok','warning','critical','unknown')),
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exit_code INTEGER NOT NULL,
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duration_ms INTEGER NOT NULL CHECK (duration_ms >= 0),
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output TEXT,
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output_truncated BOOLEAN NOT NULL DEFAULT FALSE,
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notifications_enabled BOOLEAN NOT NULL DEFAULT TRUE,
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incident_key TEXT NOT NULL,
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PRIMARY KEY (event_id, received_at)
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) PARTITION BY RANGE (received_at);
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"""
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)
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op.execute(
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"CREATE INDEX events_agent_check_observed_idx ON events (agent_id, check_id, observed_at DESC);"
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)
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op.execute("CREATE INDEX events_observed_at_idx ON events (observed_at DESC);")
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op.execute("CREATE INDEX events_received_at_idx ON events (received_at DESC);")
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# Global idempotency table: server enforces event_id uniqueness here, not on the
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# partitioned events table. Pruned by retention TTL (event_dedup_retention_days).
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op.execute(
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"""
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CREATE TABLE event_ingest_dedup (
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event_id UUID PRIMARY KEY,
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received_at TIMESTAMPTZ NOT NULL DEFAULT now()
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);
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"""
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)
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op.execute(
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"CREATE INDEX event_ingest_dedup_received_at_idx ON event_ingest_dedup (received_at);"
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)
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op.execute(
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"""
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CREATE TABLE incidents (
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id UUID PRIMARY KEY,
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incident_key TEXT NOT NULL,
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agent_id TEXT NOT NULL,
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check_id TEXT NOT NULL,
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state TEXT NOT NULL CHECK (state IN ('open','resolved')),
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severity TEXT NOT NULL CHECK (severity IN ('warning','critical','unknown')),
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opened_at TIMESTAMPTZ NOT NULL,
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resolved_at TIMESTAMPTZ,
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summary TEXT,
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last_event_id UUID NOT NULL
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);
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"""
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)
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op.execute(
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"CREATE UNIQUE INDEX incidents_open_key_idx ON incidents (incident_key) WHERE state = 'open';"
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)
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op.execute("CREATE INDEX incidents_state_opened_idx ON incidents (state, opened_at DESC);")
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op.execute(
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"""
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CREATE TABLE notification_outbox (
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id UUID PRIMARY KEY,
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incident_id UUID NOT NULL REFERENCES incidents(id) ON DELETE CASCADE,
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notifier TEXT NOT NULL,
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event_type TEXT NOT NULL CHECK (event_type IN ('firing','resolved')),
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state TEXT NOT NULL CHECK (state IN ('pending','sending','sent','retry','failed','discarded')),
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attempts INTEGER NOT NULL DEFAULT 0,
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next_attempt_at TIMESTAMPTZ,
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last_error TEXT,
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payload JSONB NOT NULL,
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created_at TIMESTAMPTZ NOT NULL DEFAULT now(),
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updated_at TIMESTAMPTZ NOT NULL DEFAULT now()
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);
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"""
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)
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op.execute(
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"CREATE INDEX outbox_pending_idx ON notification_outbox (state, next_attempt_at) WHERE state IN ('pending','retry');"
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)
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def downgrade() -> None:
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op.execute("DROP TABLE IF EXISTS notification_outbox CASCADE;")
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op.execute("DROP TABLE IF EXISTS incidents CASCADE;")
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op.execute("DROP TABLE IF EXISTS event_ingest_dedup CASCADE;")
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op.execute("DROP TABLE IF EXISTS events CASCADE;")
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op.execute("DROP TABLE IF EXISTS checks CASCADE;")
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op.execute("DROP TABLE IF EXISTS agents CASCADE;")
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