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Author SHA1 Message Date
Eugene YurtsevandGitHub b442bf802a release(langgraph): 1.1.7a1 (#7476)
Adding graph life cycle callbacks
2026-04-10 21:12:03 +00:00
Eugene YurtsevandGitHub bede0b7acf test(langgraph): use monotonic clock in flaky streaming test (#7477)
Switches test_sync_streaming_with_functional_api to time.monotonic() for
both emitted task timestamps and observed arrival times so the assertion
is based on a monotonic clock instead of wall time. This makes the
streaming timing check less flaky on systems where time.time() can jump
or lack sufficient precision.

Created with [Deep Agents
CLI](https://docs.langchain.com/oss/python/deepagents/cli/overview)
using gpt-5.4 (provider: openai).
2026-04-10 21:05:37 +00:00
3a5b5c9821 feat(langgraph): add graph lifecycle callback handlers (#7429)
## Summary

This change adds first-class graph lifecycle callbacks to LangGraph so
interrupt and resume transitions can be observed without overloading the
existing LangChain custom event system. It introduces a dedicated graph
callback manager and wires lifecycle emission through Pregel execution
in both sync and async paths.

## Changes

- **`libs/langgraph/langgraph/callbacks.py`**: Adds
`GraphCallbackHandler` and `GraphCallbackManager` (built on LangChain
base callback classes), plus config plumbing via `graph_callbacks` and
`get_graph_callback_manager_for_config`.
- **`libs/langgraph/langgraph/pregel/_loop.py`**: Introduces
`GraphLifecycleEvent` and records lifecycle transitions (`resume`,
`interrupt`) into an internal FIFO queue with
`shift_graph_lifecycle_event()`.
- **`libs/langgraph/langgraph/pregel/main.py`**: Resolves graph callback
manager from config and drains lifecycle events while loop execution
progresses, dispatching `on_resume` and `on_interrupt` consistently in
sync and async runtimes.
- **`libs/langgraph/tests/test_graph_callbacks.py`**: Adds sync and
async coverage verifying lifecycle callbacks fire correctly and remain
distinct from LangChain `on_custom_event` handlers.

---------

Co-authored-by: Eugene Yurtsev <eyurtsev@gmail.com>
2026-04-10 20:43:48 +00:00
dependabot[bot]GitHubdependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>John Kennedy
1142ebf921 chore(deps): bump langchain-core from 1.2.23 to 1.2.28 in /libs/checkpoint (#7453)
Bumps [langchain-core](https://github.com/langchain-ai/langchain) from
1.2.23 to 1.2.28.
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a
href="https://github.com/langchain-ai/langchain/releases">langchain-core's
releases</a>.</em></p>
<blockquote>
<h2>langchain-core==1.2.28</h2>
<p>Changes since langchain-core==1.2.27</p>
<p>release(core): release 1.2.28 (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/36614">#36614</a>)
fix(core): add more sanitization to templates (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/36612">#36612</a>)</p>
<h2>langchain-core==1.2.27</h2>
<p>Changes since langchain-core==1.2.26</p>
<p>release(core): 1.2.27 (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/36586">#36586</a>)
fix(core): handle symlinks in deprecated prompt save path (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/36585">#36585</a>)
chore: add comment explaining <code>pygments&gt;=2.20.0</code> (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/36570">#36570</a>)</p>
<p>Credit to Jeff Ponte (<a
href="https://github.com/JDP-Security"><code>@​JDP-Security</code></a>)
for reporting the symlink resolution issue in <a
href="https://redirect.github.com/langchain-ai/langchain/issues/36585">#36585</a>.</p>
<h2>langchain-core==1.2.26</h2>
<p>Changes since langchain-core==1.2.25</p>
<p>release(core): 1.2.26 (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/36511">#36511</a>)
fix(core): add init validator and serialization mappings for Bedrock
models (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/34510">#34510</a>)
feat(core): add <code>ChatBaseten</code> to serializable mapping (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/36510">#36510</a>)
chore(core): drop <code>gpt-3.5-turbo</code> from docstrings (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/36497">#36497</a>)
fix(core): correct parameter names in filter_messages docstring example
(<a
href="https://redirect.github.com/langchain-ai/langchain/issues/36462">#36462</a>)</p>
<h2>langchain-core==1.2.25</h2>
<p>Changes since langchain-core==1.2.24</p>
<p>release(core): 1.2.25 (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/36473">#36473</a>)
fix(core): harden check for txt files in deprecated prompt loading
functions (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/36471">#36471</a>)
fix(core): fixed typos in the documentation (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/36459">#36459</a>)</p>
<p>Credit to Jeff Ponte (<a
href="https://github.com/JDP-Security"><code>@​JDP-Security</code></a>)
for reporting the symlink resolution issue resolved in <a
href="https://redirect.github.com/langchain-ai/langchain/issues/36471">#36471</a>.</p>
<h2>langchain-core==1.2.24</h2>
<p>Changes since langchain-core==1.2.23</p>
<p>release(core): 1.2.24 (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/36434">#36434</a>)
feat(core): impute placeholder filenames for OpenAI file inputs (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/36433">#36433</a>)
chore: pygments&gt;=2.20.0 across all packages (CVE-2026-4539) (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/36385">#36385</a>)
fix(core): add &quot;computer&quot; to _WellKnownOpenAITools (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/36261">#36261</a>)</p>
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<li><a
href="https://github.com/langchain-ai/langchain/commit/dd7c3eb3a4acfc834b038ec9dbde94478c66776e"><code>dd7c3eb</code></a>
release(core): release 1.2.28 (<a
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<li><a
href="https://github.com/langchain-ai/langchain/commit/af2ed47c6f008cdd551f3c0d87db3774c8dfe258"><code>af2ed47</code></a>
fix(core): add more sanitization to templates (<a
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<li><a
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fix(standard-tests): update standard tests for sandbox backends (<a
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chore(model-profiles): refresh model profile data (<a
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<li><a
href="https://github.com/langchain-ai/langchain/commit/64864041168606535dfbd39055c0dca3dd61b5ba"><code>6486404</code></a>
release(core): 1.2.27 (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/36586">#36586</a>)</li>
<li><a
href="https://github.com/langchain-ai/langchain/commit/7629c747260cbaed7ca55466d5b9e1b520a7de77"><code>7629c74</code></a>
fix(core): handle symlinks in deprecated prompt save path (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/36585">#36585</a>)</li>
<li><a
href="https://github.com/langchain-ai/langchain/commit/ce21bf469d7493f4716bc30feb15a5b3f16ebe1e"><code>ce21bf4</code></a>
ci: convert working-directory to validated dropdown (<a
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<li><a
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release(ollama): 1.1.0 (<a
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<li><a
href="https://github.com/langchain-ai/langchain/commit/3beba77e2e23d498fda07f9b8d6ba00aabfaf69f"><code>3beba77</code></a>
feat(ollama): support <code>response_format</code> (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/34612">#34612</a>)</li>
<li>Additional commits viewable in <a
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dependabot[bot]GitHubdependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>John Kennedy
37b34bdb1e chore(deps): bump langchain-core from 1.2.22 to 1.2.28 in /libs/sdk-py (#7449)
Bumps [langchain-core](https://github.com/langchain-ai/langchain) from
1.2.22 to 1.2.28.
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<blockquote>
<h2>langchain-core==1.2.28</h2>
<p>Changes since langchain-core==1.2.27</p>
<p>release(core): release 1.2.28 (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/36614">#36614</a>)
fix(core): add more sanitization to templates (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/36612">#36612</a>)</p>
<h2>langchain-core==1.2.27</h2>
<p>Changes since langchain-core==1.2.26</p>
<p>release(core): 1.2.27 (<a
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fix(core): handle symlinks in deprecated prompt save path (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/36585">#36585</a>)
chore: add comment explaining <code>pygments&gt;=2.20.0</code> (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/36570">#36570</a>)</p>
<p>Credit to Jeff Ponte (<a
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for reporting the symlink resolution issue in <a
href="https://redirect.github.com/langchain-ai/langchain/issues/36585">#36585</a>.</p>
<h2>langchain-core==1.2.26</h2>
<p>Changes since langchain-core==1.2.25</p>
<p>release(core): 1.2.26 (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/36511">#36511</a>)
fix(core): add init validator and serialization mappings for Bedrock
models (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/34510">#34510</a>)
feat(core): add <code>ChatBaseten</code> to serializable mapping (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/36510">#36510</a>)
chore(core): drop <code>gpt-3.5-turbo</code> from docstrings (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/36497">#36497</a>)
fix(core): correct parameter names in filter_messages docstring example
(<a
href="https://redirect.github.com/langchain-ai/langchain/issues/36462">#36462</a>)</p>
<h2>langchain-core==1.2.25</h2>
<p>Changes since langchain-core==1.2.24</p>
<p>release(core): 1.2.25 (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/36473">#36473</a>)
fix(core): harden check for txt files in deprecated prompt loading
functions (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/36471">#36471</a>)
fix(core): fixed typos in the documentation (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/36459">#36459</a>)</p>
<p>Credit to Jeff Ponte (<a
href="https://github.com/JDP-Security"><code>@​JDP-Security</code></a>)
for reporting the symlink resolution issue resolved in <a
href="https://redirect.github.com/langchain-ai/langchain/issues/36471">#36471</a>.</p>
<h2>langchain-core==1.2.24</h2>
<p>Changes since langchain-core==1.2.23</p>
<p>release(core): 1.2.24 (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/36434">#36434</a>)
feat(core): impute placeholder filenames for OpenAI file inputs (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/36433">#36433</a>)
chore: pygments&gt;=2.20.0 across all packages (CVE-2026-4539) (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/36385">#36385</a>)
fix(core): add &quot;computer&quot; to _WellKnownOpenAITools (<a
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<p>release(core): 1.2.23 (<a
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revert: Revert &quot;fix(core): trace invocation params in
metadata&quot; (<a
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chore: bump requests from 2.32.5 to 2.33.0 in /libs/core (<a
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fix(core): add more sanitization to templates (<a
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fix(core): handle symlinks in deprecated prompt save path (<a
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11e8d827eb chore(deps): bump cryptography from 46.0.6 to 46.0.7 in /libs/langgraph (#7457)
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173ef2ff44 chore(deps): bump langchain-core from 1.2.22 to 1.2.28 in /libs/checkpoint-postgres (#7454)
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80ef3ced0b chore(deps): bump langchain-core from 1.2.22 to 1.2.28 in /libs/checkpoint-conformance (#7448)
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fix(core): correct parameter names in filter_messages docstring example
(<a
href="https://redirect.github.com/langchain-ai/langchain/issues/36462">#36462</a>)</p>
<h2>langchain-core==1.2.25</h2>
<p>Changes since langchain-core==1.2.24</p>
<p>release(core): 1.2.25 (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/36473">#36473</a>)
fix(core): harden check for txt files in deprecated prompt loading
functions (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/36471">#36471</a>)
fix(core): fixed typos in the documentation (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/36459">#36459</a>)</p>
<p>Credit to Jeff Ponte (<a
href="https://github.com/JDP-Security"><code>@​JDP-Security</code></a>)
for reporting the symlink resolution issue resolved in <a
href="https://redirect.github.com/langchain-ai/langchain/issues/36471">#36471</a>.</p>
<h2>langchain-core==1.2.24</h2>
<p>Changes since langchain-core==1.2.23</p>
<p>release(core): 1.2.24 (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/36434">#36434</a>)
feat(core): impute placeholder filenames for OpenAI file inputs (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/36433">#36433</a>)
chore: pygments&gt;=2.20.0 across all packages (CVE-2026-4539) (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/36385">#36385</a>)
fix(core): add &quot;computer&quot; to _WellKnownOpenAITools (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/36261">#36261</a>)</p>
<h2>langchain-core==1.2.23</h2>
<p>Changes since langchain-core==1.2.22</p>
<p>release(core): 1.2.23 (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/36323">#36323</a>)
revert: Revert &quot;fix(core): trace invocation params in
metadata&quot; (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/36322">#36322</a>)
chore: bump requests from 2.32.5 to 2.33.0 in /libs/core (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/36243">#36243</a>)</p>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/langchain-ai/langchain/commit/dd7c3eb3a4acfc834b038ec9dbde94478c66776e"><code>dd7c3eb</code></a>
release(core): release 1.2.28 (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/36614">#36614</a>)</li>
<li><a
href="https://github.com/langchain-ai/langchain/commit/af2ed47c6f008cdd551f3c0d87db3774c8dfe258"><code>af2ed47</code></a>
fix(core): add more sanitization to templates (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/36612">#36612</a>)</li>
<li><a
href="https://github.com/langchain-ai/langchain/commit/7e5858d8078124f98f10102da21414689467c132"><code>7e5858d</code></a>
release(standard-tests): 1.1.6 (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/36610">#36610</a>)</li>
<li><a
href="https://github.com/langchain-ai/langchain/commit/fe99cb29123b704a90f5c8587a757def3b1471e0"><code>fe99cb2</code></a>
fix(standard-tests): update standard tests for sandbox backends (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/36036">#36036</a>)</li>
<li><a
href="https://github.com/langchain-ai/langchain/commit/65bbd47cb2721c51ef8638f9e7da35247c4bfdde"><code>65bbd47</code></a>
chore(model-profiles): refresh model profile data (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/36596">#36596</a>)</li>
<li><a
href="https://github.com/langchain-ai/langchain/commit/64864041168606535dfbd39055c0dca3dd61b5ba"><code>6486404</code></a>
release(core): 1.2.27 (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/36586">#36586</a>)</li>
<li><a
href="https://github.com/langchain-ai/langchain/commit/7629c747260cbaed7ca55466d5b9e1b520a7de77"><code>7629c74</code></a>
fix(core): handle symlinks in deprecated prompt save path (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/36585">#36585</a>)</li>
<li><a
href="https://github.com/langchain-ai/langchain/commit/ce21bf469d7493f4716bc30feb15a5b3f16ebe1e"><code>ce21bf4</code></a>
ci: convert working-directory to validated dropdown (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/36575">#36575</a>)</li>
<li><a
href="https://github.com/langchain-ai/langchain/commit/b8698eacbd2960c7e3195018f42992bf2c9d69c7"><code>b8698ea</code></a>
release(ollama): 1.1.0 (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/36574">#36574</a>)</li>
<li><a
href="https://github.com/langchain-ai/langchain/commit/3beba77e2e23d498fda07f9b8d6ba00aabfaf69f"><code>3beba77</code></a>
feat(ollama): support <code>response_format</code> (<a
href="https://redirect.github.com/langchain-ai/langchain/issues/34612">#34612</a>)</li>
<li>Additional commits viewable in <a
href="https://github.com/langchain-ai/langchain/compare/langchain-core==1.2.22...langchain-core==1.2.28">compare
view</a></li>
</ul>
</details>
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2026-04-09 16:46:02 -07:00
1629794658 chore: update conformance lint (#7459)
Co-authored-by: Will Fu-Hinthorn <will@langchain.dev>
2026-04-08 18:22:18 -07:00
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[[package]]
+412
View File
@@ -0,0 +1,412 @@
"""Graph lifecycle callback interfaces and event payloads.
This module defines the public callback surface for observing LangGraph-specific
lifecycle transitions such as interrupt and resume.
"""
from __future__ import annotations
from collections.abc import Sequence
from dataclasses import dataclass
from typing import Any, Literal, TypeAlias, TypeVar
from uuid import UUID
from langchain_core.callbacks import BaseCallbackHandler, BaseCallbackManager
from langchain_core.callbacks.manager import ahandle_event, handle_event
from langchain_core.runnables import RunnableConfig
from langgraph.types import Interrupt
__all__ = (
"GraphCallbackHandler",
"GraphInterruptEvent",
"GraphLifecycleEvent",
"GraphLifecycleStatus",
"GraphResumeEvent",
"get_async_graph_callback_manager_for_config",
"get_sync_graph_callback_manager_for_config",
)
GraphLifecycleStatus: TypeAlias = Literal[
"input",
"pending",
"done",
"interrupt_before",
"interrupt_after",
"out_of_steps",
]
"""Allowed lifecycle statuses reported in graph lifecycle callback events."""
@dataclass(frozen=True)
class GraphInterruptEvent:
"""Graph lifecycle event emitted when execution pauses for interrupts."""
run_id: UUID | None
"""Run id for the current graph execution, if available."""
status: GraphLifecycleStatus
"""Loop status when the interrupt was captured."""
checkpoint_id: str
"""Checkpoint id associated with the interrupted execution."""
checkpoint_ns: tuple[str, ...]
"""Checkpoint namespace path for the current graph or subgraph."""
interrupts: tuple[Interrupt, ...]
"""Interrupt payloads that caused the graph to pause."""
@dataclass(frozen=True)
class GraphResumeEvent:
"""Graph lifecycle event emitted when execution resumes from a checkpoint."""
run_id: UUID | None
"""Run id for the current graph execution, if available."""
status: GraphLifecycleStatus
"""Loop status when the resume was captured."""
checkpoint_id: str
"""Checkpoint id the graph resumed from."""
checkpoint_ns: tuple[str, ...]
"""Checkpoint namespace path for the current graph or subgraph."""
GraphLifecycleEvent: TypeAlias = GraphInterruptEvent | GraphResumeEvent
"""Union of all public graph lifecycle callback event payloads.
Use this alias when a callback or helper can receive either interrupt or resume
lifecycle events.
"""
class GraphCallbackHandler(BaseCallbackHandler):
"""Base class for graph-level lifecycle callbacks.
Subclass this handler to observe graph lifecycle transitions that are
specific to LangGraph execution, rather than generic LangChain runnable
callbacks.
Instances can be passed through `config["callbacks"]` when invoking a
graph. Only handlers that inherit from `GraphCallbackHandler` receive these
lifecycle events.
"""
def on_interrupt(self, event: GraphInterruptEvent) -> Any:
"""Run when graph execution pauses due to one or more interrupts.
Args:
event: Interrupt lifecycle event payload.
"""
def on_resume(self, event: GraphResumeEvent) -> Any:
"""Run when graph execution resumes from a persisted checkpoint.
Args:
event: Resume lifecycle event payload.
"""
_MISSING = object()
def _filter_graph_handlers(
handlers: list[BaseCallbackHandler],
) -> list[GraphCallbackHandler]:
return [h for h in handlers if isinstance(h, GraphCallbackHandler)]
def _init_base_manager(
manager: BaseCallbackManager,
handlers: Sequence[GraphCallbackHandler] | None,
inheritable_handlers: Sequence[GraphCallbackHandler] | None,
parent_run_id: UUID | None,
*,
tags: list[str] | None,
inheritable_tags: list[str] | None,
metadata: dict[str, Any] | None,
inheritable_metadata: dict[str, Any] | None,
run_id: UUID | None,
) -> None:
base_handlers: list[BaseCallbackHandler] = []
base_inheritable_handlers: list[BaseCallbackHandler] = []
if handlers is not None:
base_handlers.extend(handlers)
if inheritable_handlers is not None:
base_inheritable_handlers.extend(inheritable_handlers)
BaseCallbackManager.__init__(
manager,
handlers=base_handlers,
inheritable_handlers=base_inheritable_handlers,
parent_run_id=parent_run_id,
tags=tags,
inheritable_tags=inheritable_tags,
metadata=metadata,
inheritable_metadata=inheritable_metadata,
)
manager.run_id = run_id # type: ignore[attr-defined]
def _configure_graph_callbacks(
cls: type[_GraphManagerT],
callbacks: object | None,
*,
run_id: UUID | None,
) -> _GraphManagerT:
if callbacks is None:
return cls(run_id=run_id)
if isinstance(callbacks, cls):
return callbacks.copy(run_id=run_id)
if isinstance(callbacks, (_GraphCallbackManager, _AsyncGraphCallbackManager)):
# Cross-type: extract handlers into the requested cls.
return cls(
handlers=_filter_graph_handlers(callbacks.handlers),
inheritable_handlers=_filter_graph_handlers(callbacks.inheritable_handlers),
parent_run_id=callbacks.parent_run_id,
tags=callbacks.tags.copy(),
inheritable_tags=callbacks.inheritable_tags.copy(),
metadata=callbacks.metadata.copy(),
inheritable_metadata=callbacks.inheritable_metadata.copy(),
run_id=run_id,
)
if isinstance(callbacks, BaseCallbackManager):
return cls(
handlers=_filter_graph_handlers(callbacks.handlers),
inheritable_handlers=_filter_graph_handlers(callbacks.inheritable_handlers),
parent_run_id=callbacks.parent_run_id,
tags=callbacks.tags.copy(),
inheritable_tags=callbacks.inheritable_tags.copy(),
metadata=callbacks.metadata.copy(),
inheritable_metadata=callbacks.inheritable_metadata.copy(),
run_id=run_id,
)
if isinstance(callbacks, GraphCallbackHandler):
return cls((callbacks,), run_id=run_id)
if isinstance(callbacks, (str, bytes)) or not isinstance(callbacks, Sequence):
raise TypeError("callbacks must be a handler, sequence, or manager")
return cls(_filter_graph_handlers(list(callbacks)), run_id=run_id)
def _copy_graph_manager(
manager: _GraphCallbackManager | _AsyncGraphCallbackManager,
cls: type[_GraphManagerT],
run_id: UUID | None | object,
) -> _GraphManagerT:
resolved_run_id: UUID | None
if run_id is _MISSING:
resolved_run_id = manager.run_id
else:
if run_id is not None and not isinstance(run_id, UUID):
raise TypeError("run_id must be a UUID or None")
resolved_run_id = run_id
return cls(
handlers=_filter_graph_handlers(manager.handlers),
inheritable_handlers=_filter_graph_handlers(manager.inheritable_handlers),
parent_run_id=manager.parent_run_id,
tags=manager.tags.copy(),
inheritable_tags=manager.inheritable_tags.copy(),
metadata=manager.metadata.copy(),
inheritable_metadata=manager.inheritable_metadata.copy(),
run_id=resolved_run_id,
)
class _GraphCallbackManager(BaseCallbackManager):
"""Sync dispatcher for graph lifecycle events."""
run_id: UUID | None
def __init__(
self,
handlers: Sequence[GraphCallbackHandler] | None = None,
inheritable_handlers: Sequence[GraphCallbackHandler] | None = None,
parent_run_id: UUID | None = None,
*,
tags: list[str] | None = None,
inheritable_tags: list[str] | None = None,
metadata: dict[str, Any] | None = None,
inheritable_metadata: dict[str, Any] | None = None,
run_id: UUID | None = None,
) -> None:
_init_base_manager(
self,
handlers,
inheritable_handlers,
parent_run_id,
tags=tags,
inheritable_tags=inheritable_tags,
metadata=metadata,
inheritable_metadata=inheritable_metadata,
run_id=run_id,
)
def add_handler(
self,
handler: BaseCallbackHandler,
inherit: bool = True, # noqa: FBT001,FBT002
) -> None:
if not isinstance(handler, GraphCallbackHandler):
raise TypeError("handlers must inherit GraphCallbackHandler")
super().add_handler(handler, inherit=inherit)
def copy(
self,
*,
run_id: UUID | None | object = _MISSING,
) -> _GraphCallbackManager:
return _copy_graph_manager(self, _GraphCallbackManager, run_id)
@classmethod
def configure(
cls,
callbacks: object | None = None,
*,
run_id: UUID | None = None,
) -> _GraphCallbackManager:
return _configure_graph_callbacks(cls, callbacks, run_id=run_id)
def on_interrupt(self, event: GraphInterruptEvent) -> None:
handle_event(
self.handlers,
"on_interrupt",
None,
event,
)
def on_resume(self, event: GraphResumeEvent) -> None:
handle_event(
self.handlers,
"on_resume",
None,
event,
)
class _AsyncGraphCallbackManager(BaseCallbackManager):
"""Async dispatcher for graph lifecycle events."""
run_id: UUID | None
@property
def is_async(self) -> bool:
"""Return whether the manager is async."""
return True
def __init__(
self,
handlers: Sequence[GraphCallbackHandler] | None = None,
inheritable_handlers: Sequence[GraphCallbackHandler] | None = None,
parent_run_id: UUID | None = None,
*,
tags: list[str] | None = None,
inheritable_tags: list[str] | None = None,
metadata: dict[str, Any] | None = None,
inheritable_metadata: dict[str, Any] | None = None,
run_id: UUID | None = None,
) -> None:
_init_base_manager(
self,
handlers,
inheritable_handlers,
parent_run_id,
tags=tags,
inheritable_tags=inheritable_tags,
metadata=metadata,
inheritable_metadata=inheritable_metadata,
run_id=run_id,
)
def add_handler(
self,
handler: BaseCallbackHandler,
inherit: bool = True, # noqa: FBT001,FBT002
) -> None:
if not isinstance(handler, GraphCallbackHandler):
raise TypeError("handlers must inherit GraphCallbackHandler")
super().add_handler(handler, inherit=inherit)
def copy(
self,
*,
run_id: UUID | None | object = _MISSING,
) -> _AsyncGraphCallbackManager:
return _copy_graph_manager(self, _AsyncGraphCallbackManager, run_id)
@classmethod
def configure(
cls,
callbacks: object | None = None,
*,
run_id: UUID | None = None,
) -> _AsyncGraphCallbackManager:
return _configure_graph_callbacks(cls, callbacks, run_id=run_id)
async def on_interrupt(self, event: GraphInterruptEvent) -> None:
await ahandle_event(
self.handlers,
"on_interrupt",
None,
event,
)
async def on_resume(self, event: GraphResumeEvent) -> None:
await ahandle_event(
self.handlers,
"on_resume",
None,
event,
)
_GraphManagerT = TypeVar(
"_GraphManagerT", _GraphCallbackManager, _AsyncGraphCallbackManager
)
GraphCallbacks: TypeAlias = (
_GraphCallbackManager
| _AsyncGraphCallbackManager
| BaseCallbackManager
| GraphCallbackHandler
| Sequence[BaseCallbackHandler]
| Sequence[GraphCallbackHandler]
| None
)
def get_sync_graph_callback_manager_for_config(
config: RunnableConfig,
*,
run_id: UUID | None = None,
) -> _GraphCallbackManager:
"""Build a sync graph lifecycle callback manager from a runnable config.
This helper filters `config["callbacks"]` down to handlers that inherit
from `GraphCallbackHandler` and binds the provided `run_id` onto the
returned manager.
"""
return _GraphCallbackManager.configure(
config.get("callbacks"),
run_id=run_id,
)
def get_async_graph_callback_manager_for_config(
config: RunnableConfig,
*,
run_id: UUID | None = None,
) -> _AsyncGraphCallbackManager:
"""Build an async graph lifecycle callback manager from a runnable config.
This helper filters `config["callbacks"]` down to handlers that inherit
from `GraphCallbackHandler` and binds the provided `run_id` onto the
returned manager.
"""
return _AsyncGraphCallbackManager.configure(
config.get("callbacks"),
run_id=run_id,
)
@@ -1,215 +0,0 @@
from __future__ import annotations
import asyncio
import os
import queue
import threading
from collections.abc import Callable
from contextlib import AbstractAsyncContextManager, AbstractContextManager
from dataclasses import dataclass
from types import TracebackType
from typing import Any
from langchain_core.runnables import RunnableConfig
from langgraph.checkpoint.base import (
ChannelVersions,
Checkpoint,
CheckpointMetadata,
)
QUEUE_PUT_TIMEOUT = 0.05
CHECKPOINT_BACKLOG_ENV_VAR = "LANGGRAPH_CHECKPOINT_BACKLOG"
DEFAULT_CHECKPOINT_BACKLOG = 10
@dataclass(frozen=True)
class CheckpointRequest:
config: RunnableConfig
checkpoint: Checkpoint
metadata: CheckpointMetadata
new_versions: ChannelVersions
def _raise(error: BaseException) -> None:
raise error
def resolve_checkpoint_backlog() -> int:
if raw := os.getenv(CHECKPOINT_BACKLOG_ENV_VAR):
try:
backlog = int(raw)
except ValueError:
return DEFAULT_CHECKPOINT_BACKLOG
if backlog > 0:
return backlog
return DEFAULT_CHECKPOINT_BACKLOG
class SyncCheckpointWriter(AbstractContextManager):
def __init__(
self,
put: Callable[
[RunnableConfig, Checkpoint, CheckpointMetadata, ChannelVersions], Any
],
*,
max_pending: int | None = None,
) -> None:
self.put = put
max_pending = (
resolve_checkpoint_backlog() if max_pending is None else max_pending
)
self.queue: queue.Queue[CheckpointRequest | None] = queue.Queue(max_pending)
self.error: BaseException | None = None
self.closed = False
self.thread = threading.Thread(
target=self._run,
name="langgraph-checkpoint-writer",
daemon=True,
)
def __enter__(self) -> SyncCheckpointWriter:
self.thread.start()
return self
def submit(self, request: CheckpointRequest) -> None:
self._ensure_open()
while True:
self._raise_if_broken()
try:
self.queue.put(request, timeout=QUEUE_PUT_TIMEOUT)
except queue.Full:
continue
else:
self._raise_if_broken()
return
def _run(self) -> None:
while True:
item = self.queue.get()
if item is None:
return
try:
self.put(
item.config,
item.checkpoint,
item.metadata,
item.new_versions,
)
except BaseException as exc:
self.error = exc
return
def _ensure_open(self) -> None:
if self.closed:
raise RuntimeError("Checkpoint writer is closed")
def _raise_if_broken(self) -> None:
if self.error is not None:
_raise(self.error)
def __exit__(
self,
exc_type: type[BaseException] | None,
exc_value: BaseException | None,
traceback: TracebackType | None,
) -> bool | None:
self.closed = True
while self.thread.is_alive():
if self.error is not None:
break
try:
self.queue.put(None, timeout=QUEUE_PUT_TIMEOUT)
except queue.Full:
continue
else:
break
self.thread.join()
if exc_type is None and self.error is not None:
_raise(self.error)
return None
class AsyncCheckpointWriter(AbstractAsyncContextManager):
def __init__(
self,
put: Callable[
[RunnableConfig, Checkpoint, CheckpointMetadata, ChannelVersions], Any
],
*,
max_pending: int | None = None,
) -> None:
self.put = put
max_pending = (
resolve_checkpoint_backlog() if max_pending is None else max_pending
)
self.queue: asyncio.Queue[CheckpointRequest | None] = asyncio.Queue(max_pending)
self.error: BaseException | None = None
self.closed = False
self.task: asyncio.Task[None] | None = None
async def __aenter__(self) -> AsyncCheckpointWriter:
self.task = asyncio.create_task(self._run(), name="langgraph-checkpoint-writer")
return self
async def submit(self, request: CheckpointRequest) -> None:
self._ensure_open()
while True:
self._raise_if_broken()
try:
await asyncio.wait_for(
self.queue.put(request),
timeout=QUEUE_PUT_TIMEOUT,
)
except asyncio.TimeoutError:
continue
else:
self._raise_if_broken()
return
async def _run(self) -> None:
while True:
item = await self.queue.get()
if item is None:
return
try:
await self.put(
item.config,
item.checkpoint,
item.metadata,
item.new_versions,
)
except BaseException as exc:
self.error = exc
return
def _ensure_open(self) -> None:
if self.closed:
raise RuntimeError("Checkpoint writer is closed")
def _raise_if_broken(self) -> None:
if self.error is not None:
_raise(self.error)
async def __aexit__(
self,
exc_type: type[BaseException] | None,
exc_value: BaseException | None,
traceback: TracebackType | None,
) -> None:
self.closed = True
while self.task is not None and not self.task.done():
if self.error is not None:
break
try:
await asyncio.wait_for(
self.queue.put(None),
timeout=QUEUE_PUT_TIMEOUT,
)
except asyncio.TimeoutError:
continue
else:
break
if self.task is not None:
await self.task
if exc_type is None and self.error is not None:
_raise(self.error)
+150 -115
View File
@@ -2,6 +2,7 @@ from __future__ import annotations
import asyncio
import binascii
import concurrent.futures
from collections import defaultdict, deque
from collections.abc import Callable, Iterator, Mapping, Sequence
from contextlib import (
@@ -26,6 +27,7 @@ from langgraph.cache.base import BaseCache
from langgraph.checkpoint.base import (
WRITES_IDX_MAP,
BaseCheckpointSaver,
ChannelVersions,
Checkpoint,
CheckpointMetadata,
CheckpointTuple,
@@ -60,6 +62,11 @@ from langgraph._internal._constants import (
from langgraph._internal._replay import ReplayState
from langgraph._internal._scratchpad import PregelScratchpad
from langgraph._internal._typing import EMPTY_SEQ, MISSING
from langgraph.callbacks import (
GraphInterruptEvent,
GraphLifecycleEvent,
GraphResumeEvent,
)
from langgraph.channels.base import BaseChannel
from langgraph.channels.untracked_value import UntrackedValue
from langgraph.constants import TAG_HIDDEN
@@ -90,11 +97,6 @@ from langgraph.pregel._checkpoint import (
create_checkpoint,
empty_checkpoint,
)
from langgraph.pregel._checkpoint_writer import (
AsyncCheckpointWriter,
CheckpointRequest,
SyncCheckpointWriter,
)
from langgraph.pregel._executor import (
AsyncBackgroundExecutor,
BackgroundExecutor,
@@ -120,6 +122,7 @@ from langgraph.types import (
CachePolicy,
Command,
Durability,
Interrupt,
PregelExecutableTask,
RetryPolicy,
Send,
@@ -169,6 +172,19 @@ class PregelLoop:
checkpointer_get_next_version: GetNextVersion
checkpointer_put_writes: Callable[[RunnableConfig, WritesT, str], Any] | None
checkpointer_put_writes_accepts_task_path: bool
_checkpointer_put_after_previous: (
Callable[
[
concurrent.futures.Future | None,
RunnableConfig,
Checkpoint,
str,
ChannelVersions,
],
Any,
]
| None
)
_migrate_checkpoint: Callable[[Checkpoint], None] | None
submit: Submit
channels: Mapping[str, BaseChannel]
@@ -193,6 +209,8 @@ class PregelLoop:
tasks: dict[str, PregelExecutableTask]
output: None | dict[str, Any] | Any = None
updated_channels: set[str] | None = None
_graph_lifecycle_events: deque[GraphLifecycleEvent]
_has_graph_lifecycle_callbacks: bool
# public
@@ -218,6 +236,7 @@ class PregelLoop:
migrate_checkpoint: Callable[[Checkpoint], None] | None = None,
retry_policy: Sequence[RetryPolicy] = (),
cache_policy: CachePolicy | None = None,
has_graph_lifecycle_callbacks: bool = False,
) -> None:
self.stream = stream
self.config = config
@@ -242,6 +261,8 @@ class PregelLoop:
self.retry_policy = retry_policy
self.cache_policy = cache_policy
self.durability = durability
self._has_graph_lifecycle_callbacks = has_graph_lifecycle_callbacks
self._graph_lifecycle_events = deque()
if self.stream is not None and CONFIG_KEY_STREAM in config[CONF]:
self.stream = DuplexStream(self.stream, config[CONF][CONFIG_KEY_STREAM])
scratchpad: PregelScratchpad | None = config[CONF].get(CONFIG_KEY_SCRATCHPAD)
@@ -293,6 +314,40 @@ class PregelLoop:
)
self.prev_checkpoint_config = None
def _push_graph_lifecycle_event(
self,
kind: Literal["resume", "interrupt"],
*,
interrupts: tuple[Interrupt, ...] = (),
) -> None:
if kind == "resume":
self._graph_lifecycle_events.append(
GraphResumeEvent(
run_id=None,
status=self.status,
checkpoint_id=self.checkpoint["id"],
checkpoint_ns=self.checkpoint_ns,
)
)
elif kind == "interrupt":
self._graph_lifecycle_events.append(
GraphInterruptEvent(
run_id=None,
status=self.status,
checkpoint_id=self.checkpoint["id"],
checkpoint_ns=self.checkpoint_ns,
interrupts=interrupts,
)
)
else:
msg = f"Unknown graph lifecycle event type: {kind}"
raise AssertionError(msg)
def _pop_lifecycle_event(self) -> GraphLifecycleEvent | None:
if not self._graph_lifecycle_events:
return None
return self._graph_lifecycle_events.popleft()
def put_writes(self, task_id: str, writes: WritesT) -> None:
"""Put writes for a task, to be read by the next tick."""
if not writes:
@@ -481,7 +536,7 @@ class PregelLoop:
)
# produce debug output
if self.checkpointer is not None:
if self._checkpointer_put_after_previous is not None:
self._emit(
"checkpoints",
map_debug_checkpoint,
@@ -527,7 +582,7 @@ class PregelLoop:
return True
def _after_tick(self) -> CheckpointRequest | None:
def after_tick(self) -> None:
# finish superstep
writes = [w for t in self.tasks.values() for w in t.writes]
# all tasks have finished
@@ -552,14 +607,14 @@ class PregelLoop:
# only replay (re-execute) done tasks on the first tick
self.is_replaying = False
# save checkpoint
return self._prepare_checkpoint({"source": "loop"})
def _finish_after_tick(self) -> None:
self._put_checkpoint({"source": "loop"})
# after execution, check if we should interrupt
if self.interrupt_after and should_interrupt(
self.checkpoint, self.interrupt_after, self.tasks.values()
):
self.status = "interrupt_after"
raise GraphInterrupt()
# unset resuming flag
self.config[CONF].pop(CONFIG_KEY_RESUMING, None)
def match_cached_writes(self) -> Sequence[PregelExecutableTask]:
@@ -609,7 +664,7 @@ class PregelLoop:
def _first(
self, *, input_keys: str | Sequence[str], updated_channels: set[str] | None
) -> tuple[set[str] | None, CheckpointRequest | None]:
) -> set[str] | None:
# Resuming from a previous checkpoint requires two things:
# 1. A prior checkpoint exists (channel_versions is non-empty)
# 2. The input signals continuation (not a fresh run with new input)
@@ -703,7 +758,6 @@ class PregelLoop:
)
if updated_channels is not None:
updated_channels.update(null_updated_channels)
checkpoint_request = None
# proceed past previous checkpoint
if is_resuming:
self.checkpoint["versions_seen"].setdefault(INTERRUPT, {})
@@ -746,7 +800,7 @@ class PregelLoop:
)
# save input checkpoint
self.updated_channels = updated_channels
checkpoint_request = self._prepare_checkpoint({"source": "input"})
self._put_checkpoint({"source": "input"})
elif CONFIG_KEY_RESUMING not in configurable:
raise EmptyInputError(f"Received no input for {input_keys}")
# Propagate resuming and replaying flags to subgraphs.
@@ -776,11 +830,11 @@ class PregelLoop:
)
# set flag
self.status = "pending"
return updated_channels, checkpoint_request
if is_resuming:
self._push_graph_lifecycle_event("resume")
return updated_channels
def _prepare_checkpoint(
self, metadata: CheckpointMetadata
) -> CheckpointRequest | None:
def _put_checkpoint(self, metadata: CheckpointMetadata) -> None:
# assign step and parents
exiting = metadata is self.checkpoint_metadata
if exiting and self.checkpoint["id"] == self.checkpoint_id_saved:
@@ -790,7 +844,8 @@ class PregelLoop:
metadata["step"] = self.step
metadata["parents"] = self.config[CONF].get(CONFIG_KEY_CHECKPOINT_MAP, {})
self.checkpoint_metadata = metadata
do_checkpoint = self.checkpointer is not None and (
# do checkpoint?
do_checkpoint = self._checkpointer_put_after_previous is not None and (
exiting or self.durability != "exit"
)
# create new checkpoint
@@ -812,8 +867,9 @@ class PregelLoop:
for value in self.checkpoint["channel_values"][TASKS]
]
self.checkpoint["channel_values"][TASKS] = sanitized_tasks
request = None
if do_checkpoint:
# bail if no checkpointer
if do_checkpoint and self._checkpointer_put_after_previous is not None:
self.prev_checkpoint_config = (
self.checkpoint_config
if CONFIG_KEY_CHECKPOINT_ID in self.checkpoint_config[CONF]
@@ -835,11 +891,17 @@ class PregelLoop:
self.checkpoint_previous_versions, channel_versions
)
self.checkpoint_previous_versions = channel_versions
request = CheckpointRequest(
config=self.checkpoint_config,
checkpoint=copy_checkpoint(self.checkpoint),
metadata=self.checkpoint_metadata,
new_versions=new_versions,
# save it, without blocking
# if there's a previous checkpoint save in progress, wait for it
# ensuring checkpointers receive checkpoints in order
self._put_checkpoint_fut = self.submit(
self._checkpointer_put_after_previous,
getattr(self, "_put_checkpoint_fut", None),
self.checkpoint_config,
copy_checkpoint(self.checkpoint),
self.checkpoint_metadata,
new_versions,
)
self.checkpoint_config = {
**self.checkpoint_config,
@@ -851,18 +913,30 @@ class PregelLoop:
if not exiting:
# increment step
self.step += 1
return request
def _put_checkpoint(self, metadata: CheckpointMetadata) -> None:
raise NotImplementedError
def _finalize_suppress(
def _suppress_interrupt(
self,
exc_type: type[BaseException] | None,
exc_value: BaseException | None,
traceback: TracebackType | None,
) -> bool | None:
suppress = isinstance(exc_value, GraphInterrupt) and not self.is_nested
if suppress:
# persist current checkpoint and writes
if self.durability == "exit" and (
# if it's a top graph
not self.is_nested
# or a nested graph with error or interrupt
or exc_value is not None
# or a nested graph with checkpointer=True
or all(NS_END not in part for part in self.checkpoint_ns)
):
self._put_checkpoint(self.checkpoint_metadata)
self._put_pending_writes()
# suppress interrupt
if isinstance(exc_value, GraphInterrupt) and not self.is_nested:
interrupt = exc_value
interrupts = tuple(interrupt.args[0]) if interrupt.args else ()
self._push_graph_lifecycle_event("interrupt", interrupts=interrupts)
# emit one last "values" event, with pending writes applied
if (
hasattr(self, "tasks")
and self.checkpoint_pending_writes
@@ -887,33 +961,20 @@ class PregelLoop:
[w for t in self.tasks.values() for w in t.writes],
self.channels,
)
if exc_value is not None and (not exc_value.args or not exc_value.args[0]):
# emit INTERRUPT if exception is empty (otherwise emitted by put_writes)
if not interrupt.args or not interrupt.args[0]:
interrupt_payload = interrupt.args[0] if interrupt.args else ()
self._emit(
"updates",
lambda: iter(
[{INTERRUPT: cast(GraphInterrupt, exc_value).args[0]}]
),
lambda: iter([{INTERRUPT: interrupt_payload}]),
)
# save final output
self.output = read_channels(self.channels, self.output_keys)
# suppress interrupt
return True
elif exc_type is None:
# save final output
self.output = read_channels(self.channels, self.output_keys)
return None
def _suppress_interrupt(
self,
exc_type: type[BaseException] | None,
exc_value: BaseException | None,
traceback: TracebackType | None,
) -> bool | None:
if self.durability == "exit" and (
not self.is_nested
or exc_value is not None
or all(NS_END not in part for part in self.checkpoint_ns)
):
self._put_checkpoint(self.checkpoint_metadata)
self._put_pending_writes()
return self._finalize_suppress(exc_type, exc_value)
def _emit(
self,
@@ -1027,6 +1088,7 @@ class SyncPregelLoop(PregelLoop, AbstractContextManager):
migrate_checkpoint: Callable[[Checkpoint], None] | None = None,
retry_policy: Sequence[RetryPolicy] = (),
cache_policy: CachePolicy | None = None,
has_graph_lifecycle_callbacks: bool = False,
) -> None:
super().__init__(
input,
@@ -1048,6 +1110,7 @@ class SyncPregelLoop(PregelLoop, AbstractContextManager):
retry_policy=retry_policy,
cache_policy=cache_policy,
durability=durability,
has_graph_lifecycle_callbacks=has_graph_lifecycle_callbacks,
)
self.stack = ExitStack()
if checkpointer:
@@ -1059,30 +1122,26 @@ class SyncPregelLoop(PregelLoop, AbstractContextManager):
)
else:
self.checkpointer_get_next_version = increment
self._checkpointer_put_after_previous = None # type: ignore[assignment]
self.checkpointer_put_writes = None
self.checkpointer_put_writes_accepts_task_path = False
self._checkpoint_writer: SyncCheckpointWriter | None = None
def _dispatch_checkpoint_request(self, request: CheckpointRequest) -> None:
if self.durability == "async" and self._checkpoint_writer is not None:
self._checkpoint_writer.submit(request)
else:
def _checkpointer_put_after_previous(
self,
prev: concurrent.futures.Future | None,
config: RunnableConfig,
checkpoint: Checkpoint,
metadata: CheckpointMetadata,
new_versions: ChannelVersions,
) -> RunnableConfig:
try:
if prev is not None:
prev.result()
finally:
cast(BaseCheckpointSaver, self.checkpointer).put(
request.config,
request.checkpoint,
request.metadata,
request.new_versions,
config, checkpoint, metadata, new_versions
)
def _put_checkpoint(self, metadata: CheckpointMetadata) -> None:
if request := self._prepare_checkpoint(metadata):
self._dispatch_checkpoint_request(request)
def after_tick(self) -> None:
if request := self._after_tick():
self._dispatch_checkpoint_request(request)
self._finish_after_tick()
def match_cached_writes(self) -> Sequence[PregelExecutableTask]:
if self.cache is None:
return ()
@@ -1127,6 +1186,7 @@ class SyncPregelLoop(PregelLoop, AbstractContextManager):
# context manager
def __enter__(self) -> Self:
self._graph_lifecycle_events = deque()
if not self.checkpointer:
saved = None
elif self.checkpoint_config[CONF].get(CONFIG_KEY_CHECKPOINT_ID):
@@ -1177,10 +1237,6 @@ class SyncPregelLoop(PregelLoop, AbstractContextManager):
else []
)
self.submit = self.stack.enter_context(BackgroundExecutor(self.config))
if self.checkpointer is not None and self.durability == "async":
self._checkpoint_writer = self.stack.enter_context(
SyncCheckpointWriter(self.checkpointer.put)
)
self.channels, self.managed = channels_from_checkpoint(
self.specs, self.checkpoint
)
@@ -1189,14 +1245,12 @@ class SyncPregelLoop(PregelLoop, AbstractContextManager):
self.step = self.checkpoint_metadata["step"] + 1
self.stop = self.step + self.config["recursion_limit"] + 1
self.checkpoint_previous_versions = self.checkpoint["channel_versions"].copy()
self.updated_channels, checkpoint_request = self._first(
self.updated_channels = self._first(
input_keys=self.input_keys,
updated_channels=set(self.checkpoint.get("updated_channels")) # type: ignore[arg-type]
if self.checkpoint.get("updated_channels")
else None,
)
if checkpoint_request is not None:
self._dispatch_checkpoint_request(checkpoint_request)
return self
@@ -1233,6 +1287,7 @@ class AsyncPregelLoop(PregelLoop, AbstractAsyncContextManager):
migrate_checkpoint: Callable[[Checkpoint], None] | None = None,
retry_policy: Sequence[RetryPolicy] = (),
cache_policy: CachePolicy | None = None,
has_graph_lifecycle_callbacks: bool = False,
) -> None:
super().__init__(
input,
@@ -1254,6 +1309,7 @@ class AsyncPregelLoop(PregelLoop, AbstractAsyncContextManager):
retry_policy=retry_policy,
cache_policy=cache_policy,
durability=durability,
has_graph_lifecycle_callbacks=has_graph_lifecycle_callbacks,
)
self.stack = AsyncExitStack()
if checkpointer:
@@ -1265,26 +1321,26 @@ class AsyncPregelLoop(PregelLoop, AbstractAsyncContextManager):
)
else:
self.checkpointer_get_next_version = increment
self._checkpointer_put_after_previous = None # type: ignore[assignment]
self.checkpointer_put_writes = None
self.checkpointer_put_writes_accepts_task_path = False
self._checkpoint_writer: AsyncCheckpointWriter | None = None
async def _dispatch_checkpoint_request(self, request: CheckpointRequest) -> None:
if self.durability == "async" and self._checkpoint_writer is not None:
await self._checkpoint_writer.submit(request)
else:
async def _checkpointer_put_after_previous(
self,
prev: asyncio.Task | None,
config: RunnableConfig,
checkpoint: Checkpoint,
metadata: CheckpointMetadata,
new_versions: ChannelVersions,
) -> RunnableConfig:
try:
if prev is not None:
await prev
finally:
await cast(BaseCheckpointSaver, self.checkpointer).aput(
request.config,
request.checkpoint,
request.metadata,
request.new_versions,
config, checkpoint, metadata, new_versions
)
async def aafter_tick(self) -> None:
if request := self._after_tick():
await self._dispatch_checkpoint_request(request)
self._finish_after_tick()
async def amatch_cached_writes(self) -> Sequence[PregelExecutableTask]:
if self.cache is None:
return []
@@ -1329,25 +1385,10 @@ class AsyncPregelLoop(PregelLoop, AbstractAsyncContextManager):
},
)
async def _asuppress_interrupt(
self,
exc_type: type[BaseException] | None,
exc_value: BaseException | None,
traceback: TracebackType | None,
) -> bool | None:
if self.durability == "exit" and (
not self.is_nested
or exc_value is not None
or all(NS_END not in part for part in self.checkpoint_ns)
):
if request := self._prepare_checkpoint(self.checkpoint_metadata):
await self._dispatch_checkpoint_request(request)
self._put_pending_writes()
return self._finalize_suppress(exc_type, exc_value)
# context manager
async def __aenter__(self) -> Self:
self._graph_lifecycle_events = deque()
if not self.checkpointer:
saved = None
elif self.checkpoint_config[CONF].get(CONFIG_KEY_CHECKPOINT_ID):
@@ -1400,26 +1441,20 @@ class AsyncPregelLoop(PregelLoop, AbstractAsyncContextManager):
self.submit = await self.stack.enter_async_context(
AsyncBackgroundExecutor(self.config)
)
if self.checkpointer is not None and self.durability == "async":
self._checkpoint_writer = await self.stack.enter_async_context(
AsyncCheckpointWriter(self.checkpointer.aput)
)
self.channels, self.managed = channels_from_checkpoint(
self.specs, self.checkpoint
)
self.stack.push_async_exit(self._asuppress_interrupt)
self.stack.push(self._suppress_interrupt)
self.status = "input"
self.step = self.checkpoint_metadata["step"] + 1
self.stop = self.step + self.config["recursion_limit"] + 1
self.checkpoint_previous_versions = self.checkpoint["channel_versions"].copy()
self.updated_channels, checkpoint_request = self._first(
self.updated_channels = self._first(
input_keys=self.input_keys,
updated_channels=set(self.checkpoint.get("updated_channels")) # type: ignore[arg-type]
if self.checkpoint.get("updated_channels")
else None,
)
if checkpoint_request is not None:
await self._dispatch_checkpoint_request(checkpoint_request)
return self
+64 -2
View File
@@ -16,7 +16,7 @@ from collections.abc import (
Mapping,
Sequence,
)
from dataclasses import is_dataclass
from dataclasses import is_dataclass, replace
from functools import partial
from inspect import isclass
from typing import (
@@ -96,6 +96,12 @@ from langgraph._internal._runnable import (
coerce_to_runnable,
)
from langgraph._internal._typing import MISSING, DeprecatedKwargs
from langgraph.callbacks import (
GraphInterruptEvent,
GraphResumeEvent,
get_async_graph_callback_manager_for_config,
get_sync_graph_callback_manager_for_config,
)
from langgraph.channels.base import BaseChannel
from langgraph.channels.topic import Topic
from langgraph.config import get_config
@@ -2585,6 +2591,10 @@ class Pregel(
name=config.get("run_name", self.get_name()),
run_id=config.get("run_id"),
)
graph_callback_manager = get_sync_graph_callback_manager_for_config(
config,
run_id=run_manager.run_id,
)
try:
# assign defaults
(
@@ -2669,6 +2679,17 @@ class Pregel(
_output_mapper = self._output_mapper if version == "v2" else None
_state_mapper = self._state_mapper if version == "v2" else None
def emit_graph_lifecycle_events(loop: SyncPregelLoop) -> None:
while (event := loop._pop_lifecycle_event()) is not None:
if isinstance(event, GraphResumeEvent):
graph_callback_manager.on_resume(
replace(event, run_id=graph_callback_manager.run_id)
)
else:
graph_callback_manager.on_interrupt(
replace(event, run_id=graph_callback_manager.run_id)
)
with SyncPregelLoop(
input,
stream=StreamProtocol(stream.put, stream_modes),
@@ -2689,7 +2710,9 @@ class Pregel(
migrate_checkpoint=self._migrate_checkpoint,
retry_policy=self.retry_policy,
cache_policy=self.cache_policy,
has_graph_lifecycle_callbacks=bool(graph_callback_manager.handlers),
) as loop:
emit_graph_lifecycle_events(loop)
# create runner
runner = PregelRunner(
submit=config[CONF].get(
@@ -2751,6 +2774,11 @@ class Pregel(
_state_mapper,
)
loop.after_tick()
emit_graph_lifecycle_events(loop)
# wait for checkpoint
if durability_ == "sync":
loop._put_checkpoint_fut.result()
emit_graph_lifecycle_events(loop)
# emit output
yield from _output(
stream_mode,
@@ -2925,6 +2953,10 @@ class Pregel(
name=config.get("run_name", self.get_name()),
run_id=config.get("run_id"),
)
graph_callback_manager = get_async_graph_callback_manager_for_config(
config,
run_id=run_manager.run_id,
)
# if running from astream_log() run each proc with streaming
do_stream = (
next(
@@ -3039,6 +3071,28 @@ class Pregel(
_output_mapper = self._output_mapper if version == "v2" else None
_state_mapper = self._state_mapper if version == "v2" else None
async def aemit_graph_lifecycle_events(loop: AsyncPregelLoop) -> None:
while (event := loop._pop_lifecycle_event()) is not None:
if isinstance(event, GraphResumeEvent):
await graph_callback_manager.on_resume(
GraphResumeEvent(
run_id=graph_callback_manager.run_id,
status=event.status,
checkpoint_id=event.checkpoint_id,
checkpoint_ns=event.checkpoint_ns,
)
)
else:
await graph_callback_manager.on_interrupt(
GraphInterruptEvent(
run_id=graph_callback_manager.run_id,
status=event.status,
checkpoint_id=event.checkpoint_id,
checkpoint_ns=event.checkpoint_ns,
interrupts=event.interrupts,
)
)
async with AsyncPregelLoop(
input,
stream=StreamProtocol(stream.put_nowait, stream_modes),
@@ -3059,7 +3113,9 @@ class Pregel(
migrate_checkpoint=self._migrate_checkpoint,
retry_policy=self.retry_policy,
cache_policy=self.cache_policy,
has_graph_lifecycle_callbacks=bool(graph_callback_manager.handlers),
) as loop:
await aemit_graph_lifecycle_events(loop)
# create runner
runner = PregelRunner(
submit=config[CONF].get(
@@ -3140,12 +3196,18 @@ class Pregel(
_state_mapper,
):
yield o
await loop.aafter_tick()
loop.after_tick()
await aemit_graph_lifecycle_events(loop)
# wait for checkpoint
if durability_ == "sync":
await cast(asyncio.Future, loop._put_checkpoint_fut)
finally:
# ensure waiter doesn't remain pending on cancel/shutdown
if _cleanup_waiter is not None:
await _cleanup_waiter()
await aemit_graph_lifecycle_events(loop)
# emit output
for o in _output(
stream_mode,
+1 -1
View File
@@ -4,7 +4,7 @@ build-backend = "hatchling.build"
[project]
name = "langgraph"
version = "1.1.6"
version = "1.1.7a1"
description = "Building stateful, multi-actor applications with LLMs"
authors = []
requires-python = ">=3.10"
@@ -0,0 +1,277 @@
from __future__ import annotations
import sys
from typing import Any
import pytest
from langchain_core.callbacks.base import BaseCallbackHandler
from langchain_core.callbacks.manager import CallbackManager
from langgraph.checkpoint.memory import InMemorySaver
from typing_extensions import TypedDict
from langgraph.callbacks import (
GraphCallbackHandler,
GraphInterruptEvent,
GraphResumeEvent,
)
from langgraph.graph import START, StateGraph
from langgraph.types import Command, Interrupt, interrupt
NEEDS_CONTEXTVARS = pytest.mark.skipif(
sys.version_info < (3, 11),
reason="Python 3.11+ is required for async contextvars support",
)
class _GraphEventHandler(GraphCallbackHandler):
def __init__(self) -> None:
self.interrupt_events: list[GraphInterruptEvent] = []
self.resume_events: list[GraphResumeEvent] = []
def on_interrupt(self, event: GraphInterruptEvent) -> Any:
self.interrupt_events.append(event)
def on_resume(self, event: GraphResumeEvent) -> Any:
self.resume_events.append(event)
class _LangChainCustomEventHandler(BaseCallbackHandler):
run_inline = True
def __init__(self) -> None:
self.events: list[str] = []
def on_custom_event(self, name: str, data: Any, **kwargs: Any) -> Any:
self.events.append(name)
class _RaisingGraphEventHandler(GraphCallbackHandler):
def __init__(
self,
*,
raise_on_interrupt: bool = False,
raise_on_resume: bool = False,
raise_error: bool = False,
) -> None:
self.raise_on_interrupt = raise_on_interrupt
self.raise_on_resume = raise_on_resume
self.raise_error = raise_error
def on_interrupt(self, event: GraphInterruptEvent) -> Any:
if self.raise_on_interrupt:
raise ValueError("boom-interrupt")
def on_resume(self, event: GraphResumeEvent) -> Any:
if self.raise_on_resume:
raise ValueError("boom-resume")
class _AsyncRaisingGraphEventHandler(GraphCallbackHandler):
def __init__(
self,
*,
raise_on_interrupt: bool = False,
raise_on_resume: bool = False,
raise_error: bool = False,
) -> None:
self.raise_on_interrupt = raise_on_interrupt
self.raise_on_resume = raise_on_resume
self.raise_error = raise_error
async def on_interrupt(self, event: GraphInterruptEvent) -> Any:
if self.raise_on_interrupt:
raise ValueError("boom-interrupt")
async def on_resume(self, event: GraphResumeEvent) -> Any:
if self.raise_on_resume:
raise ValueError("boom-resume")
class _State(TypedDict):
answer: str | None
def _build_interrupt_graph() -> Any:
def ask(state: _State) -> _State:
answer = interrupt("Provide value")
return {"answer": answer}
builder = StateGraph(_State)
builder.add_node("ask", ask)
builder.add_edge(START, "ask")
return builder.compile(checkpointer=InMemorySaver())
def test_graph_callbacks_interrupt_and_resume_sync() -> None:
graph = _build_interrupt_graph()
handler = _GraphEventHandler()
langchain_handler = _LangChainCustomEventHandler()
config = {
"configurable": {"thread_id": "graph-callback-sync"},
"callbacks": [langchain_handler, handler],
}
first = graph.invoke({"answer": None}, config)
assert "__interrupt__" in first
assert len(handler.interrupt_events) == 1
assert handler.interrupt_events[0].interrupts
assert isinstance(handler.interrupt_events[0].interrupts[0], Interrupt)
assert handler.interrupt_events[0].checkpoint_ns == ()
assert langchain_handler.events == []
handler.resume_events.clear()
resumed = graph.invoke(Command(resume="done"), config)
assert resumed == {"answer": "done"}
assert len(handler.resume_events) == 1
assert handler.resume_events[0].checkpoint_ns == ()
assert langchain_handler.events == []
@pytest.mark.anyio
@NEEDS_CONTEXTVARS
async def test_graph_callbacks_interrupt_and_resume_async() -> None:
graph = _build_interrupt_graph()
handler = _GraphEventHandler()
langchain_handler = _LangChainCustomEventHandler()
config = {
"configurable": {"thread_id": "graph-callback-async"},
"callbacks": [langchain_handler, handler],
}
first = await graph.ainvoke({"answer": None}, config)
assert "__interrupt__" in first
assert len(handler.interrupt_events) == 1
assert handler.interrupt_events[0].interrupts
assert isinstance(handler.interrupt_events[0].interrupts[0], Interrupt)
assert handler.interrupt_events[0].checkpoint_ns == ()
assert langchain_handler.events == []
handler.resume_events.clear()
resumed = await graph.ainvoke(Command(resume="done"), config)
assert resumed == {"answer": "done"}
assert len(handler.resume_events) == 1
assert handler.resume_events[0].checkpoint_ns == ()
assert langchain_handler.events == []
def test_graph_callbacks_continue_when_interrupt_handler_raises_sync() -> None:
graph = _build_interrupt_graph()
raising_handler = _RaisingGraphEventHandler(raise_on_interrupt=True)
recording_handler = _GraphEventHandler()
first = graph.invoke(
{"answer": None},
{
"configurable": {"thread_id": "graph-callback-sync-raises"},
"callbacks": [raising_handler, recording_handler],
},
)
assert "__interrupt__" in first
assert len(recording_handler.interrupt_events) == 1
def test_graph_callbacks_continue_when_resume_handler_raises_sync() -> None:
graph = _build_interrupt_graph()
raising_handler = _RaisingGraphEventHandler(raise_on_resume=True)
recording_handler = _GraphEventHandler()
config = {
"configurable": {"thread_id": "graph-callback-sync-raises-resume"},
"callbacks": [raising_handler, recording_handler],
}
first = graph.invoke({"answer": None}, config)
assert "__interrupt__" in first
resumed = graph.invoke(Command(resume="done"), config)
assert resumed == {"answer": "done"}
assert len(recording_handler.resume_events) == 1
def test_graph_callbacks_raise_error_propagates_sync() -> None:
graph = _build_interrupt_graph()
raising_handler = _RaisingGraphEventHandler(
raise_on_interrupt=True,
raise_error=True,
)
with pytest.raises(ValueError, match="boom-interrupt"):
graph.invoke(
{"answer": None},
{
"configurable": {"thread_id": "graph-callback-sync-raise-error"},
"callbacks": [raising_handler],
},
)
@pytest.mark.anyio
@NEEDS_CONTEXTVARS
async def test_graph_callbacks_continue_when_handler_raises_async() -> None:
graph = _build_interrupt_graph()
raising_interrupt_handler = _AsyncRaisingGraphEventHandler(raise_on_interrupt=True)
recording_handler = _GraphEventHandler()
config = {
"configurable": {"thread_id": "graph-callback-async-raises-interrupt"},
"callbacks": [raising_interrupt_handler, recording_handler],
}
first = await graph.ainvoke({"answer": None}, config)
assert "__interrupt__" in first
assert len(recording_handler.interrupt_events) == 1
graph = _build_interrupt_graph()
raising_resume_handler = _AsyncRaisingGraphEventHandler(raise_on_resume=True)
recording_handler = _GraphEventHandler()
config = {
"configurable": {"thread_id": "graph-callback-async-raises-resume"},
"callbacks": [raising_resume_handler, recording_handler],
}
first = await graph.ainvoke({"answer": None}, config)
assert "__interrupt__" in first
resumed = await graph.ainvoke(Command(resume="done"), config)
assert resumed == {"answer": "done"}
assert len(recording_handler.resume_events) == 1
@pytest.mark.anyio
@NEEDS_CONTEXTVARS
async def test_graph_callbacks_raise_error_propagates_async() -> None:
graph = _build_interrupt_graph()
raising_handler = _AsyncRaisingGraphEventHandler(
raise_on_interrupt=True,
raise_error=True,
)
with pytest.raises(ValueError, match="boom-interrupt"):
await graph.ainvoke(
{"answer": None},
{
"configurable": {"thread_id": "graph-callback-async-raise-error"},
"callbacks": [raising_handler],
},
)
def test_graph_callbacks_accept_base_callback_manager() -> None:
graph = _build_interrupt_graph()
graph_handler = _GraphEventHandler()
custom_handler = _LangChainCustomEventHandler()
manager = CallbackManager.configure(inheritable_callbacks=[custom_handler])
manager.add_handler(graph_handler)
first = graph.invoke(
{"answer": None},
{
"configurable": {"thread_id": "graph-callback-base-manager"},
"callbacks": manager,
},
)
assert "__interrupt__" in first
assert len(graph_handler.interrupt_events) == 1
+2 -97
View File
@@ -54,13 +54,6 @@ from langgraph.pregel import (
NodeBuilder,
Pregel,
)
from langgraph.pregel._checkpoint_writer import (
CHECKPOINT_BACKLOG_ENV_VAR,
DEFAULT_CHECKPOINT_BACKLOG,
AsyncCheckpointWriter,
SyncCheckpointWriter,
resolve_checkpoint_backlog,
)
from langgraph.pregel._loop import SyncPregelLoop
from langgraph.pregel._runner import PregelRunner
from langgraph.types import (
@@ -3733,7 +3726,6 @@ def test_repeat_condition(snapshot: SnapshotAssertion) -> None:
"end": END,
},
)
workflow.add_conditional_edges(
"Chart Generator",
router,
@@ -3757,93 +3749,6 @@ def test_repeat_condition(snapshot: SnapshotAssertion) -> None:
assert app.get_graph().draw_mermaid(with_styles=False) == snapshot
def test_sync_durability_applies_checkpoint_backpressure() -> None:
first_put_started = threading.Event()
release_first_put = threading.Event()
put_calls = 0
visited: list[int] = []
result: dict[str, Any] = {}
error: dict[str, BaseException] = {}
class SlowFirstPutCheckpointer(InMemorySaver):
def put(
self,
config: RunnableConfig,
checkpoint: Checkpoint,
metadata: CheckpointMetadata,
new_versions: Any,
) -> RunnableConfig:
nonlocal put_calls
put_calls += 1
if put_calls == 1:
first_put_started.set()
release_first_put.wait()
return super().put(config, checkpoint, metadata, new_versions)
class State(TypedDict):
counter: int
def increment(state: State) -> State:
visited.append(state["counter"])
return {"counter": state["counter"] + 1}
def should_continue(state: State) -> str:
return "loop" if state["counter"] < 4 else "done"
builder = StateGraph(State)
builder.add_node("increment", increment)
builder.add_edge(START, "increment")
builder.add_conditional_edges(
"increment", should_continue, {"loop": "increment", "done": END}
)
graph = builder.compile(checkpointer=SlowFirstPutCheckpointer())
def invoke() -> None:
try:
result["value"] = graph.invoke(
{"counter": 0},
{"configurable": {"thread_id": "1"}},
durability="async",
)
except BaseException as exc:
error["value"] = exc
thread = threading.Thread(target=invoke)
thread.start()
assert first_put_started.wait(timeout=1)
time.sleep(0.05)
assert thread.is_alive()
assert len(visited) <= DEFAULT_CHECKPOINT_BACKLOG + 1
release_first_put.set()
thread.join(timeout=1)
assert not thread.is_alive()
assert "value" not in error
assert result["value"] == {"counter": 4}
def test_checkpoint_backlog_uses_env_override(monkeypatch: pytest.MonkeyPatch) -> None:
monkeypatch.setenv(CHECKPOINT_BACKLOG_ENV_VAR, "7")
assert resolve_checkpoint_backlog() == 7
assert SyncCheckpointWriter(lambda *_args: None).queue.maxsize == 7
assert AsyncCheckpointWriter(lambda *_args: None).queue.maxsize == 7
def test_checkpoint_backlog_invalid_env_uses_default(
monkeypatch: pytest.MonkeyPatch,
) -> None:
monkeypatch.setenv(CHECKPOINT_BACKLOG_ENV_VAR, "not-an-int")
assert resolve_checkpoint_backlog() == DEFAULT_CHECKPOINT_BACKLOG
monkeypatch.setenv(CHECKPOINT_BACKLOG_ENV_VAR, "0")
assert resolve_checkpoint_backlog() == DEFAULT_CHECKPOINT_BACKLOG
def test_checkpoint_metadata(sync_checkpointer: BaseCheckpointSaver) -> None:
"""This test verifies that a run's configurable fields are merged with the
previous checkpoint config for each step in the run.
@@ -6366,7 +6271,7 @@ def test_sync_streaming_with_functional_api() -> None:
@task()
def slow() -> dict:
time.sleep(time_delay) # Simulate a delay of 10 ms
return {"tic": time.time()}
return {"tic": time.monotonic()}
@entrypoint()
def graph(inputs: dict) -> list:
@@ -6379,7 +6284,7 @@ def test_sync_streaming_with_functional_api() -> None:
for chunk in graph.stream({}):
if "slow" not in chunk: # We'll just look at the updates from `slow`
continue
arrival_times.append(time.time())
arrival_times.append(time.monotonic())
assert len(arrival_times) == 2
delta = arrival_times[1] - arrival_times[0]
-56
View File
@@ -53,7 +53,6 @@ from langgraph.func import entrypoint, task
from langgraph.graph import END, START, StateGraph
from langgraph.graph.message import MessagesState, add_messages
from langgraph.pregel import NodeBuilder, Pregel
from langgraph.pregel._checkpoint_writer import DEFAULT_CHECKPOINT_BACKLOG
from langgraph.pregel._loop import AsyncPregelLoop
from langgraph.pregel._runner import PregelRunner
from langgraph.types import (
@@ -485,61 +484,6 @@ async def test_checkpoint_put_after_cancellation_stream_events_anext() -> None:
assert False, "Task should be cancelled"
async def test_async_durability_applies_checkpoint_backpressure() -> None:
first_put_started = asyncio.Event()
release_first_put = asyncio.Event()
put_calls = 0
visited: list[int] = []
class SlowFirstPutCheckpointer(InMemorySaver):
async def aput(
self,
config: RunnableConfig,
checkpoint: Checkpoint,
metadata: CheckpointMetadata,
new_versions: ChannelVersions,
) -> RunnableConfig:
nonlocal put_calls
put_calls += 1
if put_calls == 1:
first_put_started.set()
await release_first_put.wait()
return await super().aput(config, checkpoint, metadata, new_versions)
class State(TypedDict):
counter: int
def increment(state: State) -> State:
visited.append(state["counter"])
return {"counter": state["counter"] + 1}
def should_continue(state: State) -> str:
return "loop" if state["counter"] < 4 else "done"
builder = StateGraph(State)
builder.add_node("increment", increment)
builder.add_edge(START, "increment")
builder.add_conditional_edges(
"increment", should_continue, {"loop": "increment", "done": END}
)
graph = builder.compile(checkpointer=SlowFirstPutCheckpointer())
task = asyncio.create_task(
graph.ainvoke(
{"counter": 0}, {"configurable": {"thread_id": "1"}}, durability="async"
)
)
await first_put_started.wait()
await asyncio.sleep(0.05)
assert not task.done()
assert len(visited) <= DEFAULT_CHECKPOINT_BACKLOG + 1
release_first_put.set()
assert await task == {"counter": 4}
async def test_node_cancellation_on_external_cancel() -> None:
inner_task_cancelled = False
+51 -51
View File
@@ -524,61 +524,61 @@ toml = [
[[package]]
name = "cryptography"
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version = "46.0.7"
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]
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