File size: 7,388 Bytes
447450c e21048b 447450c e21048b 447450c e21048b 447450c | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 | """
SQLite database setup — async aiosqlite/libsql with table creation on startup.
"""
from contextlib import asynccontextmanager
from pathlib import Path
import aiosqlite
from app.config import get_settings
class LibsqlRow(dict):
"""aiosqlite.Row compatible row wrapper for libsql-client."""
def __init__(self, colnames, row_data):
super().__init__(zip(colnames, row_data))
self._list = list(row_data)
def __getitem__(self, key):
if isinstance(key, int):
return self._list[key]
return super().__getitem__(key)
class LibsqlCursorWrapper:
"""Cursor-like wrapper for remote libsql execution. Supports both awaiting and async with."""
def __init__(self, connection, client, sql, parameters):
self.connection = connection
self.client = client
self.sql = sql
self.parameters = parameters
self.result_set = None
self.row_factory = connection.row_factory
self._index = 0
def __await__(self):
return self._execute().__await__()
async def _execute(self):
if self.result_set is None:
self.result_set = await self.client.execute(self.sql, self.parameters)
if self.row_factory == aiosqlite.Row:
self.row_factory = lambda cursor, row_data: LibsqlRow(self.result_set.columns, row_data)
return self
@property
def rowcount(self) -> int:
return getattr(self.result_set, "rows_affected", 0) if self.result_set is not None else 0
async def fetchone(self):
await self._execute()
if self._index >= len(self.result_set.rows):
return None
row = self.result_set.rows[self._index]
self._index += 1
if self.row_factory:
return self.row_factory(self, row)
return row
async def fetchall(self):
await self._execute()
rows = self.result_set.rows[self._index:]
self._index = len(self.result_set.rows)
if self.row_factory:
return [self.row_factory(self, r) for r in rows]
return rows
async def __aenter__(self):
await self._execute()
return self
async def __aexit__(self, exc_type, exc_val, exc_tb):
pass
class LibsqlConnectionWrapper:
"""Connection-like wrapper for remote libsql client."""
def __init__(self, client):
self.client = client
self._row_factory = None
@property
def row_factory(self):
return self._row_factory
@row_factory.setter
def row_factory(self, factory):
self._row_factory = factory
def execute(self, sql: str, parameters: tuple = ()):
# Return a wrapper that is both awaitable and an async context manager
return LibsqlCursorWrapper(self, self.client, sql, parameters)
async def executescript(self, script: str):
# Split statements by semicolon and execute each
statements = [stmt.strip() for stmt in script.split(";") if stmt.strip()]
for stmt in statements:
await self.client.execute(stmt)
async def commit(self):
# libsql auto-commits
pass
async def __aenter__(self):
return self
async def __aexit__(self, exc_type, exc_val, exc_tb):
pass
_global_client = None
async def close_db():
"""Close the global database client if active."""
global _global_client
if _global_client is not None:
await _global_client.close()
_global_client = None
@asynccontextmanager
async def connect_db():
"""Yield a database connection wrapper based on active settings (Turso vs. local sqlite)."""
global _global_client
settings = get_settings()
if settings.TURSO_DATABASE_URL and settings.TURSO_AUTH_TOKEN:
if _global_client is None:
url = settings.TURSO_DATABASE_URL
if url.startswith("libsql://"):
url = "https://" + url[len("libsql://"):]
import libsql_client
_global_client = libsql_client.create_client(
url=url,
auth_token=settings.TURSO_AUTH_TOKEN
)
yield LibsqlConnectionWrapper(_global_client)
else:
db_path = settings.DB_PATH
Path(db_path).parent.mkdir(parents=True, exist_ok=True)
async with aiosqlite.connect(db_path) as db:
yield db
async def get_db_path() -> str:
settings = get_settings()
Path(settings.DB_PATH).parent.mkdir(parents=True, exist_ok=True)
return settings.DB_PATH
async def init_db() -> None:
"""Create all tables if they don't exist."""
async with connect_db() as db:
await db.executescript("""
CREATE TABLE IF NOT EXISTS users (
username TEXT PRIMARY KEY,
password_hash TEXT NOT NULL
);
CREATE TABLE IF NOT EXISTS user_sessions (
token TEXT PRIMARY KEY,
username TEXT NOT NULL REFERENCES users(username) ON DELETE CASCADE,
expires_at TEXT NOT NULL
);
CREATE TABLE IF NOT EXISTS sessions (
id TEXT PRIMARY KEY,
user_id TEXT NOT NULL,
title TEXT,
created_at TEXT NOT NULL,
last_active_at TEXT NOT NULL
);
CREATE TABLE IF NOT EXISTS messages (
id TEXT PRIMARY KEY,
session_id TEXT NOT NULL REFERENCES sessions(id) ON DELETE CASCADE,
role TEXT NOT NULL,
content TEXT NOT NULL,
intent TEXT,
confidence TEXT,
response_id TEXT,
citations TEXT,
pipeline_trace TEXT,
created_at TEXT NOT NULL
);
CREATE TABLE IF NOT EXISTS feedback (
id TEXT PRIMARY KEY,
response_id TEXT NOT NULL,
session_id TEXT NOT NULL,
rating INTEGER NOT NULL,
comment TEXT,
created_at TEXT NOT NULL
);
CREATE TABLE IF NOT EXISTS user_documents (
id TEXT PRIMARY KEY,
user_id TEXT NOT NULL,
filename TEXT NOT NULL,
file_type TEXT,
collection_name TEXT NOT NULL,
chunk_count INTEGER DEFAULT 0,
file_size_bytes INTEGER DEFAULT 0,
uploaded_at TEXT NOT NULL
);
CREATE INDEX IF NOT EXISTS idx_messages_session ON messages(session_id);
CREATE INDEX IF NOT EXISTS idx_sessions_user ON sessions(user_id);
CREATE INDEX IF NOT EXISTS idx_user_docs_user ON user_documents(user_id);
CREATE INDEX IF NOT EXISTS idx_feedback_response ON feedback(response_id);
""")
# Run-time schema migration check
db.row_factory = aiosqlite.Row
async with db.execute("PRAGMA table_info(messages)") as cur:
columns = [row["name"] for row in await cur.fetchall()]
if "citations" not in columns:
await db.execute("ALTER TABLE messages ADD COLUMN citations TEXT")
if "pipeline_trace" not in columns:
await db.execute("ALTER TABLE messages ADD COLUMN pipeline_trace TEXT")
await db.commit()
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