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Merge branch 'main' into vb/update-get-state

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This commit is contained in:
vbarda
2024-08-22 15:34:14 -04:00
parent 426125cf96 a261e1a497
commit 5654d8fc86
32 changed files with 1265 additions and 540 deletions
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libs/checkpoint-sqlite/langgraph/checkpoint/sqlite/__init__.py
+8 -23
View File
@@ -1,12 +1,13 @@
import sqlite3
import threading
from contextlib import contextmanager
from contextlib import closing, contextmanager
from hashlib import md5
from typing import Any, AsyncIterator, Dict, Iterator, Optional, Sequence, Tuple
from langchain_core.runnables import RunnableConfig
from langgraph.checkpoint.base import (
WRITES_IDX_MAP,
BaseCheckpointSaver,
ChannelVersions,
Checkpoint,
@@ -318,9 +319,7 @@ class SqliteSaver(BaseCheckpointSaver):
ORDER BY checkpoint_id DESC"""
if limit:
query += f" LIMIT {limit}"
with self.cursor(transaction=False) as cur, self.cursor(
transaction=False
) as writes_cur:
with self.cursor(transaction=False) as cur, closing(self.conn.cursor()) as wcur:
cur.execute(query, param_values)
for (
thread_id,
@@ -331,13 +330,9 @@ class SqliteSaver(BaseCheckpointSaver):
checkpoint,
metadata,
) in cur:
writes_cur.execute(
wcur.execute(
"SELECT task_id, channel, type, value FROM writes WHERE thread_id = ? AND checkpoint_ns = ? AND checkpoint_id = ?",
(
thread_id,
checkpoint_ns,
checkpoint_id,
),
(thread_id, checkpoint_ns, checkpoint_id),
)
yield CheckpointTuple(
{
@@ -362,7 +357,7 @@ class SqliteSaver(BaseCheckpointSaver):
),
[
(task_id, channel, self.serde.loads_typed((type, value)))
for task_id, channel, type, value in writes_cur
for task_id, channel, type, value in wcur
],
)
@@ -438,25 +433,15 @@ class SqliteSaver(BaseCheckpointSaver):
task_id (str): Identifier for the task creating the writes.
"""
with self.lock, self.cursor() as cur:
cur.execute(
"DELETE FROM writes WHERE thread_id = ? AND checkpoint_ns = ? AND checkpoint_id = ? AND task_id = ? AND idx >= ?",
(
str(config["configurable"]["thread_id"]),
str(config["configurable"]["checkpoint_ns"]),
str(config["configurable"]["checkpoint_id"]),
task_id,
len(writes),
),
)
cur.executemany(
"INSERT OR REPLACE INTO writes (thread_id, checkpoint_ns, checkpoint_id, task_id, idx, channel, type, value) VALUES (?, ?, ?, ?, ?, ?, ?, ?)",
"INSERT OR IGNORE INTO writes (thread_id, checkpoint_ns, checkpoint_id, task_id, idx, channel, type, value) VALUES (?, ?, ?, ?, ?, ?, ?, ?)",
[
(
str(config["configurable"]["thread_id"]),
str(config["configurable"]["checkpoint_ns"]),
str(config["configurable"]["checkpoint_id"]),
task_id,
idx,
WRITES_IDX_MAP.get(channel, idx),
channel,
*self.serde.dumps_typed(value),
)
libs/checkpoint-sqlite/langgraph/checkpoint/sqlite/aio.py
+9 -22
View File
@@ -16,6 +16,7 @@ import aiosqlite
from langchain_core.runnables import RunnableConfig
from langgraph.checkpoint.base import (
WRITES_IDX_MAP,
BaseCheckpointSaver,
ChannelVersions,
Checkpoint,
@@ -329,14 +330,14 @@ class AsyncSqliteSaver(BaseCheckpointSaver):
AsyncIterator[CheckpointTuple]: An asynchronous iterator of matching checkpoint tuples.
"""
await self.setup()
where, param_values = search_where(config, filter, before)
where, params = search_where(config, filter, before)
query = f"""SELECT thread_id, checkpoint_ns, checkpoint_id, parent_checkpoint_id, type, checkpoint, metadata
FROM checkpoints
{where}
ORDER BY checkpoint_id DESC"""
if limit:
query += f" LIMIT {limit}"
async with self.conn.execute(query, param_values) as cursor:
async with self.conn.execute(query, params) as cur, self.conn.cursor() as wcur:
async for (
thread_id,
checkpoint_ns,
@@ -345,14 +346,10 @@ class AsyncSqliteSaver(BaseCheckpointSaver):
type,
checkpoint,
metadata,
) in cursor:
writes_cur = await self.conn.execute(
) in cur:
await wcur.execute(
"SELECT task_id, channel, type, value FROM writes WHERE thread_id = ? AND checkpoint_ns = ? AND checkpoint_id = ?",
(
thread_id,
checkpoint_ns,
checkpoint_id,
),
(thread_id, checkpoint_ns, checkpoint_id),
)
yield CheckpointTuple(
{
@@ -377,7 +374,7 @@ class AsyncSqliteSaver(BaseCheckpointSaver):
),
[
(task_id, channel, self.serde.loads_typed((type, value)))
async for task_id, channel, type, value in writes_cur
async for task_id, channel, type, value in wcur
],
)
@@ -445,25 +442,15 @@ class AsyncSqliteSaver(BaseCheckpointSaver):
"""
await self.setup()
async with self.conn.cursor() as cur:
await cur.execute(
"DELETE FROM writes WHERE thread_id = ? AND checkpoint_ns = ? AND checkpoint_id = ? AND task_id = ? AND idx >= ?",
(
str(config["configurable"]["thread_id"]),
str(config["configurable"]["checkpoint_ns"]),
str(config["configurable"]["checkpoint_id"]),
task_id,
len(writes),
),
)
await cur.executemany(
"INSERT OR REPLACE INTO writes (thread_id, checkpoint_ns, checkpoint_id, task_id, idx, channel, type, value) VALUES (?, ?, ?, ?, ?, ?, ?, ?)",
"INSERT OR IGNORE INTO writes (thread_id, checkpoint_ns, checkpoint_id, task_id, idx, channel, type, value) VALUES (?, ?, ?, ?, ?, ?, ?, ?)",
[
(
str(config["configurable"]["thread_id"]),
str(config["configurable"]["checkpoint_ns"]),
str(config["configurable"]["checkpoint_id"]),
task_id,
idx,
WRITES_IDX_MAP.get(channel, idx),
channel,
*self.serde.dumps_typed(value),
)