Backend: SQLite storage, EvoBGP integration, filters in SQL

Made-with: Cursor

backend/db/migrations/001_init.sql

@@ -0,0 +1,68 @@
+-- Router-lists local storage (SQLite). EvoBGP holds reference lists; this DB holds config + caches.
+
+CREATE TABLE IF NOT EXISTS app_meta (
+  key   TEXT PRIMARY KEY,
+  value TEXT NOT NULL
+);
+
+CREATE TABLE IF NOT EXISTS schema_migrations (
+  id          INTEGER PRIMARY KEY AUTOINCREMENT,
+  version     INTEGER NOT NULL UNIQUE,
+  applied_at  INTEGER NOT NULL
+);
+
+CREATE TABLE IF NOT EXISTS blobs (
+  object_key     TEXT PRIMARY KEY,
+  namespace      TEXT NOT NULL CHECK (namespace IN (
+    'config',
+    'derived',
+    'per_server',
+    'cache'
+  )),
+  content_type   TEXT NOT NULL DEFAULT 'application/octet-stream',
+  body           BLOB NOT NULL,
+  byte_size      INTEGER NOT NULL,
+  etag           TEXT NOT NULL,
+  updated_at     INTEGER NOT NULL,
+  created_at     INTEGER NOT NULL
+);
+
+CREATE INDEX IF NOT EXISTS idx_blobs_namespace_updated
+  ON blobs (namespace, updated_at DESC);
+
+CREATE INDEX IF NOT EXISTS idx_blobs_prefix
+  ON blobs (object_key);
+
+CREATE TABLE IF NOT EXISTS blob_versions (
+  id           INTEGER PRIMARY KEY AUTOINCREMENT,
+  object_key   TEXT NOT NULL,
+  body         BLOB NOT NULL,
+  byte_size    INTEGER NOT NULL,
+  etag         TEXT,
+  created_at   INTEGER NOT NULL,
+  FOREIGN KEY (object_key) REFERENCES blobs(object_key) ON DELETE CASCADE
+);
+
+CREATE INDEX IF NOT EXISTS idx_blob_versions_key_time
+  ON blob_versions (object_key, created_at DESC);
+
+CREATE TABLE IF NOT EXISTS versioned_keys (
+  object_key TEXT PRIMARY KEY
+);
+
+INSERT OR IGNORE INTO versioned_keys (object_key) VALUES
+  ('filters.json'),
+  ('servers.json');
+
+CREATE TABLE IF NOT EXISTS cache_entries (
+  cache_key    TEXT PRIMARY KEY,
+  namespace    TEXT NOT NULL DEFAULT 'cache',
+  body         BLOB NOT NULL,
+  byte_size    INTEGER NOT NULL,
+  etag         TEXT,
+  updated_at   INTEGER NOT NULL,
+  expires_at   INTEGER
+);
+
+CREATE INDEX IF NOT EXISTS idx_cache_expires
+  ON cache_entries (expires_at);