feat: initial MALS implementation — Phase 1

alembic/versions/001_initial_schema.py

@@ -0,0 +1,78 @@
+"""Initial schema — agent_logs table with indexes.
+
+Revision ID: 001
+Revises:
+Create Date: 2026-03-20
+"""
+
+from __future__ import annotations
+
+from alembic import op
+
+revision = "001"
+down_revision = None
+branch_labels = None
+depends_on = None
+
+
+def upgrade() -> None:
+    op.execute("""
+        CREATE TABLE IF NOT EXISTS agent_logs (
+            id          UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+            created_at  TIMESTAMPTZ NOT NULL DEFAULT now(),
+
+            -- Source
+            agent_id    VARCHAR(64) NOT NULL,
+            session_key VARCHAR(256),
+            source      VARCHAR(64) NOT NULL DEFAULT 'api',
+
+            -- Classification
+            level       VARCHAR(16) NOT NULL DEFAULT 'info',
+            category    VARCHAR(64),
+
+            -- Content
+            message     TEXT NOT NULL,
+            metadata    JSONB DEFAULT '{}',
+
+            -- Correlation
+            trace_id    UUID,
+            parent_id   UUID REFERENCES agent_logs(id),
+
+            -- Resolution tracking
+            resolved    BOOLEAN NOT NULL DEFAULT false,
+            resolved_at TIMESTAMPTZ,
+            resolved_by VARCHAR(64)
+        )
+    """)
+
+    op.execute("""
+        CREATE INDEX IF NOT EXISTS idx_agent_logs_agent_time
+            ON agent_logs (agent_id, created_at DESC)
+    """)
+
+    op.execute("""
+        CREATE INDEX IF NOT EXISTS idx_agent_logs_level_time
+            ON agent_logs (level, created_at DESC)
+            WHERE level IN ('warn', 'error', 'critical')
+    """)
+
+    op.execute("""
+        CREATE INDEX IF NOT EXISTS idx_agent_logs_unresolved
+            ON agent_logs (created_at DESC)
+            WHERE resolved = false AND level IN ('warn', 'error', 'critical')
+    """)
+
+    op.execute("""
+        CREATE INDEX IF NOT EXISTS idx_agent_logs_metadata
+            ON agent_logs USING GIN (metadata)
+    """)
+
+    op.execute("""
+        CREATE INDEX IF NOT EXISTS idx_agent_logs_trace
+            ON agent_logs (trace_id)
+            WHERE trace_id IS NOT NULL
+    """)
+
+
+def downgrade() -> None:
+    op.execute("DROP TABLE IF EXISTS agent_logs CASCADE")