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41 Commits
Author SHA1 Message Date
Vadym BardaandGitHub 03be3b6567 docs: reorganize API refs (#1884) 2024-09-27 18:12:12 -04:00
Vadym BardaandGitHub 659d127d2b checkpoint postgres,sqlite: update langgraph-checkpoint to 1.0.11 (#1815) 2024-09-23 22:09:28 +00:00
Vadym BardaandGitHub 7d513bcde2 checkpoint postgres,sqlite: update langgraph-checkpoint (#1813) 2024-09-23 21:47:26 +00:00
Vadym BardaandGitHub 515c619bc2 checkpoint postgres,sqlite: update version (#1812) 2024-09-23 17:33:19 -04:00
Nuno Campos e71c24ea9b Raise exception if sync method on async checkpointer is called from main thread 
- The thread running the event loop can block waiting for a coro to run, only background threads can
 2024-09-23 08:41:57 -07:00
Nuno Campos 9a8cc75ea2 Fix some typing issues in langgraph lib 2024-09-19 11:38:41 -07:00
Nuno Campos b529365f5b Remove ignore for 3.9 2024-09-19 09:19:26 -07:00
Nuno Campos 95304d658a Fix 3.9 2024-09-19 08:51:15 -07:00
Nuno Campos 6c0339ca4b ci: Enable mypy checks for checkpoint-sqlite lib 2024-09-19 08:46:44 -07:00
Nuno Campos efb572f15b Add missing branch 2024-09-18 13:18:37 -07:00
Nuno CamposandGitHub 3b05279e32 Implement serialization with msgpack library (#1716) 
* Implement serialization with msgpack library

- encode custom python objects with a msgpack extension type, with constructor path string, and args encoded as nested msgpack doc

* Smaller msgpack extension types

* Update lock files

* lock

* Don't delegate to pydantic json

* Fix kafka serde

- should use our serializer to load, as inputs to subgraphs are serialized using it
 2024-09-16 14:06:42 -07:00
Nuno CamposandGitHub 66fc7c96aa More performance improvements in checkpointing and channels (#1685) 
* Performance improvements in checkpointer libs

- Use sha1 instead of md5 for hashing (faster in python 3.x)
- Use orjson instead of json for json dumping (sadly can't use for json loading)

* Update tests

* Update

* Use random number instead of hash for get_version_number

* Avoid saving writes for the last task to complete in each step

- only when possible, exceptions for ERROR, INTERRUPT, SEND

* Make Channel.from_checkpoint a regular function

- context manager no longer needed since Context became a managed value

* Use __slots__ for Channels

* Fix for kafka
 2024-09-12 21:08:30 -07:00
Nuno Campos 270559b880 Implement changes in sqlite checkpointer 2024-09-10 16:17:22 -07:00
Nuno Campos 5d1ab66535 sqlite 1.0.3 2024-09-03 09:41:04 -07:00
Nuno CamposandNuno Campos 4793b3f5e1 Use a lock for all operations on sqlite checkpointer 
- Otherwise when used in multiple subgraphs in parallel separate queries can interfere w each other
 2024-09-03 09:20:17 -07:00
Vadym BardaandGitHub d492475c61 checkpoint-sqlite: close connection in from_conn_string (#1589) 2024-09-03 11:00:37 -04:00
Nuno Campos af666a87fb sqlite 1.0.2 2024-09-02 17:58:01 -07:00
Nuno Campos dd4a15b569 Require latest version of langgraph-checkpoint 2024-09-02 17:57:33 -07:00
Nuno Campos 0cc3799298 checkpoint: Implement sync methods in async checkpointers 
- These are needed when subgraphs are invoked synchronously in nodes
 2024-09-02 17:43:34 -07:00
Nuno Campos 3943637202 Bump them all 2024-08-30 14:18:35 -07:00
Nuno Campos e744db169a postgres/sqlite: Sort pending writes when fetching from db 2024-08-30 14:07:46 -07:00
Nuno Campos e338a4ec98 Fix filtering on ns 2024-08-27 16:09:11 -07:00
Nuno Campos 330c91f622 Update ruff 2024-08-27 10:50:39 -07:00
vbarda 85e698e20b filter on checkpoint NS 2024-08-26 19:26:35 -04:00
Vadym BardaandGitHub 4c4d7054ab Merge branch 'main' into vb/update-get-state 2024-08-23 14:27:40 -04:00
vbarda 4162be8119 optimize subgraph state lookups 2024-08-22 20:35:08 -04:00
Nuno CamposandGitHub 7e32de9405 Remove current_tasks from checkpoint interface (#1440) 
* Remove current_tasks from checkpoint interface

- Not used, now clear that it can be supported with put_writes(SCHEDULE)

* Add comment
 2024-08-22 19:44:26 +00:00
vbarda 5654d8fc86 Merge branch 'main' into vb/update-get-state 2024-08-22 15:34:14 -04:00
Nuno CamposandGitHub a261e1a497 Fix semantics of put_writes/list (#1436) 
* Fix semantics of put_writes/list

- put_writes(error) should not prevent saving future successful if task is retried successfully
- put_writes(writes) should be a no-op if non-error writes already exist for that task (this prevents tasks executed more than once from modifying writes previously saved / acted on)
- checkpoints should not include channel default values (ie those without a version)
- list() should fetch and return writes for each checkpoint

* Lint

* Rm print

* Fix import

* Lint
 2024-08-22 19:04:42 +00:00
vbarda f51e7ea9a4 pass pending writes in checkpointers 2024-08-21 15:38:30 -04:00
vbarda a94168af7f Merge branch 'main' into vb/update-get-state 2024-08-21 15:07:52 -04:00
Nuno Campos 7aaeedd7ba checkpoint-*: In put_writes clear any previously saved writes for this task_id 
- Previously implementations were clearing only tasks if the index matched a previously saved one, which isn't enough to guarantee idempotency
 2024-08-19 15:40:04 -07:00
vbarda 5033044587 update checkpointer tests 2024-08-12 16:22:27 -04:00
vbarda fb05bdc2bf return all checkpoints from .list 2024-08-12 15:52:17 -04:00
Vadym BardaandGitHub 71ce07d971 checkpoint: update docstrings for checkpoint libraries (#1277) 2024-08-08 16:26:16 +00:00
Vadym BardaandGitHub d9adebed84 checkpoint-sqlite: release 1.0.0 (#1244) 2024-08-06 22:43:35 -04:00
Vadym BardaGitHubNuno Campos
 		b37f78942d checkpoint-postgres: new library for postgres checkpointer implementation (#1236) 
* checkpoint-postgres: new library for postgres checkpointer implementation

---------

Co-authored-by: Nuno Campos <nuno@langchain.dev>
 2024-08-06 22:37:06 -04:00
vbarda 64c30508d9 checkpoint-sqlite: stop using checkpointers as context managers, use contextmanager only in from_conn_string 2024-08-05 16:20:16 -04:00
vbarda 2370db0f8c order 2024-08-02 19:08:16 -04:00
vbarda 1b353aed73 checkpoint-sqlite: add checkpoint dependency 2024-08-02 19:06:38 -04:00
Vadym BardaandGitHub c149a99b44 checkpoint-sqlite: new library for sqlite checkpointer implementation (#1203) 
* checkpoint-sqlite: new library for sqlite checkpointer implementation
 2024-08-02 22:14:12 +00:00