From b62991dfb6c66bae69cb3982e19faf02d11a75ef Mon Sep 17 00:00:00 2001 From: yaron2 Date: Fri, 7 Nov 2025 15:31:56 -0800 Subject: [PATCH 1/9] add dapr checkpointer for langgraph Signed-off-by: yaron2 --- dapr-ext-langgraph/LICENSE | 203 ++++++++++++++++++ dapr-ext-langgraph/README.rst | 22 ++ .../dapr/ext/langgraph/__init__.py | 21 ++ .../dapr/ext/langgraph/dapr_checkpointer.py | 161 ++++++++++++++ .../dapr/ext/langgraph/version.py | 16 ++ dapr-ext-langgraph/setup.cfg | 36 ++++ dapr-ext-langgraph/setup.py | 64 ++++++ 7 files changed, 523 insertions(+) create mode 100644 dapr-ext-langgraph/LICENSE create mode 100644 dapr-ext-langgraph/README.rst create mode 100644 dapr-ext-langgraph/dapr/ext/langgraph/__init__.py create mode 100644 dapr-ext-langgraph/dapr/ext/langgraph/dapr_checkpointer.py create mode 100644 dapr-ext-langgraph/dapr/ext/langgraph/version.py create mode 100644 dapr-ext-langgraph/setup.cfg create mode 100644 dapr-ext-langgraph/setup.py diff --git a/dapr-ext-langgraph/LICENSE b/dapr-ext-langgraph/LICENSE new file mode 100644 index 000000000..be033a7fd --- /dev/null +++ b/dapr-ext-langgraph/LICENSE @@ -0,0 +1,203 @@ +Apache License + Version 2.0, January 2004 + http://www.apache.org/licenses/ + + TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION + + 1. 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We also recommend that a + file or class name and description of purpose be included on the + same "printed page" as the copyright notice for easier + identification within third-party archives. + + Copyright 2021 The Dapr Authors. + + and others that have contributed code to the public domain. + + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. \ No newline at end of file diff --git a/dapr-ext-langgraph/README.rst b/dapr-ext-langgraph/README.rst new file mode 100644 index 000000000..85c101a65 --- /dev/null +++ b/dapr-ext-langgraph/README.rst @@ -0,0 +1,22 @@ +dapr-ext-langgraph extension +======================= + +|pypi| + +.. |pypi| image:: https://badge.fury.io/py/dapr-ext-langgraph.svg + :target: https://pypi.org/project/dapr-ext-langgraph/ + +This is the Dapr Checkpointer extension for LangGraph + +Installation +------------ + +:: + + pip install dapr-ext-langgraph + +References +---------- + +* `Dapr `_ +* `Dapr Python-SDK `_ diff --git a/dapr-ext-langgraph/dapr/ext/langgraph/__init__.py b/dapr-ext-langgraph/dapr/ext/langgraph/__init__.py new file mode 100644 index 000000000..acefc1ef0 --- /dev/null +++ b/dapr-ext-langgraph/dapr/ext/langgraph/__init__.py @@ -0,0 +1,21 @@ +# -*- coding: utf-8 -*- + +""" +Copyright 20235 The Dapr Authors +Licensed under the Apache License, Version 2.0 (the "License"); +you may not use this file except in compliance with the License. +You may obtain a copy of the License at + http://www.apache.org/licenses/LICENSE-2.0 +Unless required by applicable law or agreed to in writing, software +distributed under the License is distributed on an "AS IS" BASIS, +WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +See the License for the specific language governing permissions and +limitations under the License. +""" + +# Import your main classes here +from dapr.ext.langgraph.dapr_checkpointer import DaprCheckpointer + +__all__ = [ + 'DaprCheckpointer', +] \ No newline at end of file diff --git a/dapr-ext-langgraph/dapr/ext/langgraph/dapr_checkpointer.py b/dapr-ext-langgraph/dapr/ext/langgraph/dapr_checkpointer.py new file mode 100644 index 000000000..a277ddfa5 --- /dev/null +++ b/dapr-ext-langgraph/dapr/ext/langgraph/dapr_checkpointer.py @@ -0,0 +1,161 @@ +from typing import Sequence, Tuple, Any +import json +from typing import Any, Sequence, Tuple +from dapr.clients import DaprClient +from langgraph.checkpoint.base import BaseCheckpointSaver, Checkpoint, CheckpointTuple +from langchain_core.runnables import RunnableConfig +from langchain_core.load import dumps + + +class DaprCheckpointer(BaseCheckpointSaver[Checkpoint]): + """ + Dapr-backed LangGraph Checkpointer that persists checkpoints to a Dapr state store. + Compatible with LangGraph >= 0.3.6 and LangChain Core >= 1.0.0. + """ + + REGISTRY_KEY = "dapr_checkpoint_registry" + + def __init__(self, store_name: str, key_prefix: str): + self.store_name = store_name + self.key_prefix = key_prefix + + # helper: construct Dapr key for a thread + def _get_key(self, config: RunnableConfig) -> str: + thread_id = None + if isinstance(config, dict): + thread_id = config.get("configurable", {}).get("thread_id") + if not thread_id: + thread_id = config.get("thread_id") + if not thread_id: + thread_id = "default" + return f"{self.key_prefix}:{thread_id}" + + # restore a checkpoint + def get_tuple(self, config: RunnableConfig) -> CheckpointTuple | None: + key = self._get_key(config) + with DaprClient() as client: + resp = client.get_state(store_name=self.store_name, key=key) + if not resp.data: + return None + + wrapper = json.loads(resp.data) + cp_data = wrapper.get("checkpoint", wrapper) + metadata = wrapper.get("metadata", {"step": 0}) + if "step" not in metadata: + metadata["step"] = 0 + + cp = Checkpoint(**cp_data) + return CheckpointTuple( + config=config, + checkpoint=cp, + parent_config=None, + metadata=metadata, + ) + + # save a full checkpoint snapshot + def put( + self, + config: RunnableConfig, + checkpoint: Checkpoint, + parent_config: RunnableConfig | None, + metadata: dict[str, Any], + ) -> None: + key = self._get_key(config) + with DaprClient() as client: + checkpoint_serializable = { + "v": checkpoint["v"], + "id": checkpoint["id"], + "ts": checkpoint["ts"], + "channel_values": checkpoint["channel_values"], + "channel_versions": checkpoint["channel_versions"], + "versions_seen": checkpoint["versions_seen"], + } + wrapper = {"checkpoint": checkpoint_serializable, "metadata": metadata} + + # Save checkpoint to Dapr + client.save_state(self.store_name, key, dumps(wrapper)) + + # Maintain registry of all checkpoint keys + reg_resp = client.get_state(store_name=self.store_name, key=self.REGISTRY_KEY) + registry = json.loads(reg_resp.data) if reg_resp.data else [] + if key not in registry: + registry.append(key) + client.save_state( + self.store_name, self.REGISTRY_KEY, json.dumps(registry) + ) + + # incremental persistence (for streamed runs) + def put_writes( + self, + config: RunnableConfig, + writes: Sequence[Tuple[str, Any]], + task_id: str, + task_path: str = "", + ) -> None: + """Persist incremental updates for streaming or async workflows.""" + key = self._get_key(config) + with DaprClient() as client: + resp = client.get_state(store_name=self.store_name, key=key) + if not resp.data: + return + + wrapper = json.loads(resp.data) + cp = wrapper.get("checkpoint", {}) + + for field, value in writes: + cp["channel_values"][field] = value + + wrapper["checkpoint"] = cp + client.save_state(self.store_name, key, json.dumps(wrapper)) + + # enumerate all saved checkpoints + def list(self, config: RunnableConfig) -> list[CheckpointTuple]: + with DaprClient() as client: + reg_resp = client.get_state(store_name=self.store_name, key=self.REGISTRY_KEY) + if not reg_resp.data: + return [] + + keys = json.loads(reg_resp.data) + checkpoints: list[CheckpointTuple] = [] + + for key in keys: + cp_resp = client.get_state(store_name=self.store_name, key=key) + if not cp_resp.data: + continue + + wrapper = json.loads(cp_resp.data) + cp_data = wrapper.get("checkpoint", {}) + metadata = wrapper.get("metadata", {}) + cp = Checkpoint(**cp_data) + + checkpoints.append( + CheckpointTuple( + config=config, + checkpoint=cp, + parent_config=None, + metadata=metadata, + ) + ) + + return checkpoints + + + # remove a checkpoint and update the registry + def delete_thread(self, config: RunnableConfig) -> None: + key = self._get_key(config) + with DaprClient() as client: + client.delete_state(store_name=self.store_name, key=key) + + reg_resp = client.get_state(store_name=self.store_name, key=self.REGISTRY_KEY) + if not reg_resp.data: + return + + registry = json.loads(reg_resp.data) + if key in registry: + registry.remove(key) + client.save_state( + store_name=self.store_name, + key=self.REGISTRY_KEY, + value=json.dumps(registry), + ) + \ No newline at end of file diff --git a/dapr-ext-langgraph/dapr/ext/langgraph/version.py b/dapr-ext-langgraph/dapr/ext/langgraph/version.py new file mode 100644 index 000000000..5508b9894 --- /dev/null +++ b/dapr-ext-langgraph/dapr/ext/langgraph/version.py @@ -0,0 +1,16 @@ +# -*- coding: utf-8 -*- + +""" +Copyright 2025 The Dapr Authors +Licensed under the Apache License, Version 2.0 (the "License"); +you may not use this file except in compliance with the License. +You may obtain a copy of the License at + http://www.apache.org/licenses/LICENSE-2.0 +Unless required by applicable law or agreed to in writing, software +distributed under the License is distributed on an "AS IS" BASIS, +WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +See the License for the specific language governing permissions and +limitations under the License. +""" + +__version__ = '1.16.1rc1' diff --git a/dapr-ext-langgraph/setup.cfg b/dapr-ext-langgraph/setup.cfg new file mode 100644 index 000000000..a516e9c86 --- /dev/null +++ b/dapr-ext-langgraph/setup.cfg @@ -0,0 +1,36 @@ +[metadata] +url = https://dapr.io/ +author = Dapr Authors +author_email = daprweb@microsoft.com +license = Apache +license_file = LICENSE +classifiers = + Development Status :: 5 - Production/Stable + Intended Audience :: Developers + License :: OSI Approved :: Apache Software License + Operating System :: OS Independent + Programming Language :: Python + Programming Language :: Python :: 3.9 + Programming Language :: Python :: 3.10 + Programming Language :: Python :: 3.11 + Programming Language :: Python :: 3.12 + Programming Language :: Python :: 3.13 +project_urls = + Documentation = https://github.com/dapr/docs + Source = https://github.com/dapr/python-sdk + +[options] +python_requires = >=3.9 +packages = find_namespace: +include_package_data = True +install_requires = + dapr >= 1.16.1rc1 + langgraph >= 0.3.6 + langchain >= 0.1.17 + +[options.packages.find] +include = + dapr.* + +exclude = + tests diff --git a/dapr-ext-langgraph/setup.py b/dapr-ext-langgraph/setup.py new file mode 100644 index 000000000..2d4f84fb9 --- /dev/null +++ b/dapr-ext-langgraph/setup.py @@ -0,0 +1,64 @@ +# -*- coding: utf-8 -*- + +""" +Copyright 2025 The Dapr Authors +Licensed under the Apache License, Version 2.0 (the "License"); +you may not use this file except in compliance with the License. +You may obtain a copy of the License at + http://www.apache.org/licenses/LICENSE-2.0 +Unless required by applicable law or agreed to in writing, software +distributed under the License is distributed on an "AS IS" BASIS, +WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +See the License for the specific language governing permissions and +limitations under the License. +""" + +import os + +from setuptools import setup + +# Load version in dapr package. +version_info = {} +with open('dapr/ext/langgraph/version.py') as fp: + exec(fp.read(), version_info) +__version__ = version_info['__version__'] + + +def is_release(): + return '.dev' not in __version__ + + +name = 'dapr-ext-langgraph' +version = __version__ +description = 'The official release of Dapr Python SDK LangGraph Extension.' +long_description = """ +This is the Dapr Checkpointer extension for LangGraph. + +Dapr is a portable, serverless, event-driven runtime that makes it easy for developers to +build resilient, stateless and stateful microservices that run on the cloud and edge and +embraces the diversity of languages and developer frameworks. + +Dapr codifies the best practices for building microservice applications into open, +independent, building blocks that enable you to build portable applications with the language +and framework of your choice. Each building block is independent and you can use one, some, +or all of them in your application. +""".lstrip() + +# Get build number from GITHUB_RUN_NUMBER environment variable +build_number = os.environ.get('GITHUB_RUN_NUMBER', '0') + +if not is_release(): + name += '-dev' + version = f'{__version__}{build_number}' + description = 'The developmental release for the Dapr Checkpointer extension for LangGraph' + long_description = 'This is the developmental release for the Dapr Checkpointer extension for LangGraph' + +print(f'package name: {name}, version: {version}', flush=True) + + +setup( + name=name, + version=version, + description=description, + long_description=long_description, +) From 8fa152138f7c5ae858bba86b2a7b85abfef2a1d0 Mon Sep 17 00:00:00 2001 From: yaron2 Date: Fri, 7 Nov 2025 15:41:20 -0800 Subject: [PATCH 2/9] linter Signed-off-by: yaron2 --- .../dapr/ext/langgraph/__init__.py | 2 +- .../dapr/ext/langgraph/dapr_checkpointer.py | 59 +++++++++---------- dapr-ext-langgraph/setup.py | 4 +- 3 files changed, 32 insertions(+), 33 deletions(-) diff --git a/dapr-ext-langgraph/dapr/ext/langgraph/__init__.py b/dapr-ext-langgraph/dapr/ext/langgraph/__init__.py index acefc1ef0..82230f8ab 100644 --- a/dapr-ext-langgraph/dapr/ext/langgraph/__init__.py +++ b/dapr-ext-langgraph/dapr/ext/langgraph/__init__.py @@ -18,4 +18,4 @@ __all__ = [ 'DaprCheckpointer', -] \ No newline at end of file +] diff --git a/dapr-ext-langgraph/dapr/ext/langgraph/dapr_checkpointer.py b/dapr-ext-langgraph/dapr/ext/langgraph/dapr_checkpointer.py index a277ddfa5..1ee037ec9 100644 --- a/dapr-ext-langgraph/dapr/ext/langgraph/dapr_checkpointer.py +++ b/dapr-ext-langgraph/dapr/ext/langgraph/dapr_checkpointer.py @@ -1,10 +1,11 @@ -from typing import Sequence, Tuple, Any import json from typing import Any, Sequence, Tuple + +from langchain_core.load import dumps +from langchain_core.runnables import RunnableConfig + from dapr.clients import DaprClient from langgraph.checkpoint.base import BaseCheckpointSaver, Checkpoint, CheckpointTuple -from langchain_core.runnables import RunnableConfig -from langchain_core.load import dumps class DaprCheckpointer(BaseCheckpointSaver[Checkpoint]): @@ -13,7 +14,7 @@ class DaprCheckpointer(BaseCheckpointSaver[Checkpoint]): Compatible with LangGraph >= 0.3.6 and LangChain Core >= 1.0.0. """ - REGISTRY_KEY = "dapr_checkpoint_registry" + REGISTRY_KEY = 'dapr_checkpoint_registry' def __init__(self, store_name: str, key_prefix: str): self.store_name = store_name @@ -23,12 +24,12 @@ def __init__(self, store_name: str, key_prefix: str): def _get_key(self, config: RunnableConfig) -> str: thread_id = None if isinstance(config, dict): - thread_id = config.get("configurable", {}).get("thread_id") + thread_id = config.get('configurable', {}).get('thread_id') if not thread_id: - thread_id = config.get("thread_id") + thread_id = config.get('thread_id') if not thread_id: - thread_id = "default" - return f"{self.key_prefix}:{thread_id}" + thread_id = 'default' + return f'{self.key_prefix}:{thread_id}' # restore a checkpoint def get_tuple(self, config: RunnableConfig) -> CheckpointTuple | None: @@ -39,10 +40,10 @@ def get_tuple(self, config: RunnableConfig) -> CheckpointTuple | None: return None wrapper = json.loads(resp.data) - cp_data = wrapper.get("checkpoint", wrapper) - metadata = wrapper.get("metadata", {"step": 0}) - if "step" not in metadata: - metadata["step"] = 0 + cp_data = wrapper.get('checkpoint', wrapper) + metadata = wrapper.get('metadata', {'step': 0}) + if 'step' not in metadata: + metadata['step'] = 0 cp = Checkpoint(**cp_data) return CheckpointTuple( @@ -63,26 +64,24 @@ def put( key = self._get_key(config) with DaprClient() as client: checkpoint_serializable = { - "v": checkpoint["v"], - "id": checkpoint["id"], - "ts": checkpoint["ts"], - "channel_values": checkpoint["channel_values"], - "channel_versions": checkpoint["channel_versions"], - "versions_seen": checkpoint["versions_seen"], + 'v': checkpoint['v'], + 'id': checkpoint['id'], + 'ts': checkpoint['ts'], + 'channel_values': checkpoint['channel_values'], + 'channel_versions': checkpoint['channel_versions'], + 'versions_seen': checkpoint['versions_seen'], } - wrapper = {"checkpoint": checkpoint_serializable, "metadata": metadata} + wrapper = {'checkpoint': checkpoint_serializable, 'metadata': metadata} # Save checkpoint to Dapr client.save_state(self.store_name, key, dumps(wrapper)) - + # Maintain registry of all checkpoint keys reg_resp = client.get_state(store_name=self.store_name, key=self.REGISTRY_KEY) registry = json.loads(reg_resp.data) if reg_resp.data else [] if key not in registry: registry.append(key) - client.save_state( - self.store_name, self.REGISTRY_KEY, json.dumps(registry) - ) + client.save_state(self.store_name, self.REGISTRY_KEY, json.dumps(registry)) # incremental persistence (for streamed runs) def put_writes( @@ -90,7 +89,7 @@ def put_writes( config: RunnableConfig, writes: Sequence[Tuple[str, Any]], task_id: str, - task_path: str = "", + task_path: str = '', ) -> None: """Persist incremental updates for streaming or async workflows.""" key = self._get_key(config) @@ -100,12 +99,12 @@ def put_writes( return wrapper = json.loads(resp.data) - cp = wrapper.get("checkpoint", {}) + cp = wrapper.get('checkpoint', {}) for field, value in writes: - cp["channel_values"][field] = value + cp['channel_values'][field] = value - wrapper["checkpoint"] = cp + wrapper['checkpoint'] = cp client.save_state(self.store_name, key, json.dumps(wrapper)) # enumerate all saved checkpoints @@ -124,8 +123,8 @@ def list(self, config: RunnableConfig) -> list[CheckpointTuple]: continue wrapper = json.loads(cp_resp.data) - cp_data = wrapper.get("checkpoint", {}) - metadata = wrapper.get("metadata", {}) + cp_data = wrapper.get('checkpoint', {}) + metadata = wrapper.get('metadata', {}) cp = Checkpoint(**cp_data) checkpoints.append( @@ -139,7 +138,6 @@ def list(self, config: RunnableConfig) -> list[CheckpointTuple]: return checkpoints - # remove a checkpoint and update the registry def delete_thread(self, config: RunnableConfig) -> None: key = self._get_key(config) @@ -158,4 +156,3 @@ def delete_thread(self, config: RunnableConfig) -> None: key=self.REGISTRY_KEY, value=json.dumps(registry), ) - \ No newline at end of file diff --git a/dapr-ext-langgraph/setup.py b/dapr-ext-langgraph/setup.py index 2d4f84fb9..78c0daace 100644 --- a/dapr-ext-langgraph/setup.py +++ b/dapr-ext-langgraph/setup.py @@ -51,7 +51,9 @@ def is_release(): name += '-dev' version = f'{__version__}{build_number}' description = 'The developmental release for the Dapr Checkpointer extension for LangGraph' - long_description = 'This is the developmental release for the Dapr Checkpointer extension for LangGraph' + long_description = ( + 'This is the developmental release for the Dapr Checkpointer extension for LangGraph' + ) print(f'package name: {name}, version: {version}', flush=True) From f1287d89ec9e77a50bf44b389b8c1229d5a62025 Mon Sep 17 00:00:00 2001 From: Yaron Schneider Date: Fri, 7 Nov 2025 15:54:44 -0800 Subject: [PATCH 3/9] Update dapr-ext-langgraph/dapr/ext/langgraph/__init__.py Co-authored-by: Cassie Coyle Signed-off-by: Yaron Schneider --- dapr-ext-langgraph/dapr/ext/langgraph/__init__.py | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/dapr-ext-langgraph/dapr/ext/langgraph/__init__.py b/dapr-ext-langgraph/dapr/ext/langgraph/__init__.py index 82230f8ab..4f2d3cf8b 100644 --- a/dapr-ext-langgraph/dapr/ext/langgraph/__init__.py +++ b/dapr-ext-langgraph/dapr/ext/langgraph/__init__.py @@ -1,7 +1,7 @@ # -*- coding: utf-8 -*- """ -Copyright 20235 The Dapr Authors +Copyright 2025 The Dapr Authors Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at From 7df960c0b404e4f14b1bb141b3a008bedc3332ea Mon Sep 17 00:00:00 2001 From: Yaron Schneider Date: Thu, 13 Nov 2025 21:33:08 -0500 Subject: [PATCH 4/9] Update dapr-ext-langgraph/dapr/ext/langgraph/version.py Co-authored-by: Albert Callarisa Signed-off-by: Yaron Schneider --- dapr-ext-langgraph/dapr/ext/langgraph/version.py | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/dapr-ext-langgraph/dapr/ext/langgraph/version.py b/dapr-ext-langgraph/dapr/ext/langgraph/version.py index 5508b9894..dae1485d2 100644 --- a/dapr-ext-langgraph/dapr/ext/langgraph/version.py +++ b/dapr-ext-langgraph/dapr/ext/langgraph/version.py @@ -13,4 +13,4 @@ limitations under the License. """ -__version__ = '1.16.1rc1' +__version__ = '1.16.0.dev' From 292538ccb78b9dd58d388c5c149bbb51026c8c73 Mon Sep 17 00:00:00 2001 From: Yaron Schneider Date: Thu, 13 Nov 2025 21:33:16 -0500 Subject: [PATCH 5/9] Update dapr-ext-langgraph/setup.cfg Co-authored-by: Albert Callarisa Signed-off-by: Yaron Schneider --- dapr-ext-langgraph/setup.cfg | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/dapr-ext-langgraph/setup.cfg b/dapr-ext-langgraph/setup.cfg index a516e9c86..78e4ab376 100644 --- a/dapr-ext-langgraph/setup.cfg +++ b/dapr-ext-langgraph/setup.cfg @@ -10,11 +10,11 @@ classifiers = License :: OSI Approved :: Apache Software License Operating System :: OS Independent Programming Language :: Python - Programming Language :: Python :: 3.9 Programming Language :: Python :: 3.10 Programming Language :: Python :: 3.11 Programming Language :: Python :: 3.12 Programming Language :: Python :: 3.13 + Programming Language :: Python :: 3.14 project_urls = Documentation = https://github.com/dapr/docs Source = https://github.com/dapr/python-sdk From 9f6dbb6fd3a11c8855be348542e0c0ffaf0ab0e8 Mon Sep 17 00:00:00 2001 From: Yaron Schneider Date: Thu, 13 Nov 2025 21:33:25 -0500 Subject: [PATCH 6/9] Update dapr-ext-langgraph/setup.cfg Co-authored-by: Albert Callarisa Signed-off-by: Yaron Schneider --- dapr-ext-langgraph/setup.cfg | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/dapr-ext-langgraph/setup.cfg b/dapr-ext-langgraph/setup.cfg index 78e4ab376..bb32e782c 100644 --- a/dapr-ext-langgraph/setup.cfg +++ b/dapr-ext-langgraph/setup.cfg @@ -20,7 +20,7 @@ project_urls = Source = https://github.com/dapr/python-sdk [options] -python_requires = >=3.9 +python_requires = >=3.10 packages = find_namespace: include_package_data = True install_requires = From f245f6ae6c2535d971de18baaa1e125c391d026f Mon Sep 17 00:00:00 2001 From: yaron2 Date: Thu, 13 Nov 2025 21:39:31 -0500 Subject: [PATCH 7/9] add CI steps Signed-off-by: yaron2 --- .github/workflows/build-push-to-main.yaml | 7 +++++++ .github/workflows/build-tag.yaml | 8 ++++++++ 2 files changed, 15 insertions(+) diff --git a/.github/workflows/build-push-to-main.yaml b/.github/workflows/build-push-to-main.yaml index 47273aa0a..89f68a13d 100644 --- a/.github/workflows/build-push-to-main.yaml +++ b/.github/workflows/build-push-to-main.yaml @@ -106,3 +106,10 @@ jobs: cd ext/dapr-ext-fastapi python setup.py sdist bdist_wheel twine upload dist/* + - name: Build and publish dapr-ext-langgraph + env: + TWINE_PASSWORD: ${{ secrets.PYPI_UPLOAD_PASS }} + run: | + cd ext/dapr-ext-langgraph + python setup.py sdist bdist_wheel + twine upload dist/* diff --git a/.github/workflows/build-tag.yaml b/.github/workflows/build-tag.yaml index 176fbaf04..e5a6de477 100644 --- a/.github/workflows/build-tag.yaml +++ b/.github/workflows/build-tag.yaml @@ -115,3 +115,11 @@ jobs: cd ext/dapr-ext-fastapi python setup.py sdist bdist_wheel twine upload dist/* + - name: Build and publish dapr-ext-langgraph + if: startsWith(github.ref_name, 'langgraph-v') + env: + TWINE_PASSWORD: ${{ secrets.PYPI_UPLOAD_PASS }} + run: | + cd ext/dapr-ext-langgraph + python setup.py sdist bdist_wheel + twine upload dist/* From 540c6668889af28296446152656fbc3f705e8114 Mon Sep 17 00:00:00 2001 From: yaron2 Date: Thu, 13 Nov 2025 21:58:54 -0500 Subject: [PATCH 8/9] use single client, minor improvements Signed-off-by: yaron2 --- .../dapr/ext/langgraph/dapr_checkpointer.py | 194 +++++++++--------- 1 file changed, 102 insertions(+), 92 deletions(-) diff --git a/dapr-ext-langgraph/dapr/ext/langgraph/dapr_checkpointer.py b/dapr-ext-langgraph/dapr/ext/langgraph/dapr_checkpointer.py index 1ee037ec9..e4bd3424f 100644 --- a/dapr-ext-langgraph/dapr/ext/langgraph/dapr_checkpointer.py +++ b/dapr-ext-langgraph/dapr/ext/langgraph/dapr_checkpointer.py @@ -19,39 +19,44 @@ class DaprCheckpointer(BaseCheckpointSaver[Checkpoint]): def __init__(self, store_name: str, key_prefix: str): self.store_name = store_name self.key_prefix = key_prefix + self.client = DaprClient() # helper: construct Dapr key for a thread def _get_key(self, config: RunnableConfig) -> str: thread_id = None + if isinstance(config, dict): - thread_id = config.get('configurable', {}).get('thread_id') + thread_id = config.get("configurable", {}).get("thread_id") + if not thread_id: - thread_id = config.get('thread_id') + thread_id = config.get("thread_id") + if not thread_id: - thread_id = 'default' - return f'{self.key_prefix}:{thread_id}' + thread_id = "default" + + return f"{self.key_prefix}:{thread_id}" # restore a checkpoint def get_tuple(self, config: RunnableConfig) -> CheckpointTuple | None: key = self._get_key(config) - with DaprClient() as client: - resp = client.get_state(store_name=self.store_name, key=key) - if not resp.data: - return None - wrapper = json.loads(resp.data) - cp_data = wrapper.get('checkpoint', wrapper) - metadata = wrapper.get('metadata', {'step': 0}) - if 'step' not in metadata: - metadata['step'] = 0 + resp = self.client.get_state(store_name=self.store_name, key=key) + if not resp.data: + return None - cp = Checkpoint(**cp_data) - return CheckpointTuple( - config=config, - checkpoint=cp, - parent_config=None, - metadata=metadata, - ) + wrapper = json.loads(resp.data) + cp_data = wrapper.get('checkpoint', wrapper) + metadata = wrapper.get('metadata', {'step': 0}) + if 'step' not in metadata: + metadata['step'] = 0 + + cp = Checkpoint(**cp_data) + return CheckpointTuple( + config=config, + checkpoint=cp, + parent_config=None, + metadata=metadata, + ) # save a full checkpoint snapshot def put( @@ -61,27 +66,30 @@ def put( parent_config: RunnableConfig | None, metadata: dict[str, Any], ) -> None: + key = self._get_key(config) - with DaprClient() as client: - checkpoint_serializable = { - 'v': checkpoint['v'], - 'id': checkpoint['id'], - 'ts': checkpoint['ts'], - 'channel_values': checkpoint['channel_values'], - 'channel_versions': checkpoint['channel_versions'], - 'versions_seen': checkpoint['versions_seen'], - } - wrapper = {'checkpoint': checkpoint_serializable, 'metadata': metadata} - - # Save checkpoint to Dapr - client.save_state(self.store_name, key, dumps(wrapper)) - - # Maintain registry of all checkpoint keys - reg_resp = client.get_state(store_name=self.store_name, key=self.REGISTRY_KEY) - registry = json.loads(reg_resp.data) if reg_resp.data else [] - if key not in registry: - registry.append(key) - client.save_state(self.store_name, self.REGISTRY_KEY, json.dumps(registry)) + + checkpoint_serializable = { + 'v': checkpoint['v'], + 'id': checkpoint['id'], + 'ts': checkpoint['ts'], + 'channel_values': checkpoint['channel_values'], + 'channel_versions': checkpoint['channel_versions'], + 'versions_seen': checkpoint['versions_seen'], + } + + wrapper = {'checkpoint': checkpoint_serializable, 'metadata': metadata} + + self.client.save_state(self.store_name, key, dumps(wrapper)) + + reg_resp = self.client.get_state(store_name=self.store_name, key=self.REGISTRY_KEY) + registry = json.loads(reg_resp.data) if reg_resp.data else [] + + if key not in registry: + registry.append(key) + self.client.save_state( + self.store_name, self.REGISTRY_KEY, json.dumps(registry) + ) # incremental persistence (for streamed runs) def put_writes( @@ -91,68 +99,70 @@ def put_writes( task_id: str, task_path: str = '', ) -> None: - """Persist incremental updates for streaming or async workflows.""" + + _ = task_id, task_path + key = self._get_key(config) - with DaprClient() as client: - resp = client.get_state(store_name=self.store_name, key=key) - if not resp.data: - return - wrapper = json.loads(resp.data) - cp = wrapper.get('checkpoint', {}) + resp = self.client.get_state(store_name=self.store_name, key=key) + if not resp.data: + return + + wrapper = json.loads(resp.data) + cp = wrapper.get('checkpoint', {}) - for field, value in writes: - cp['channel_values'][field] = value + for field, value in writes: + cp['channel_values'][field] = value - wrapper['checkpoint'] = cp - client.save_state(self.store_name, key, json.dumps(wrapper)) + wrapper['checkpoint'] = cp + self.client.save_state(self.store_name, key, json.dumps(wrapper)) # enumerate all saved checkpoints def list(self, config: RunnableConfig) -> list[CheckpointTuple]: - with DaprClient() as client: - reg_resp = client.get_state(store_name=self.store_name, key=self.REGISTRY_KEY) - if not reg_resp.data: - return [] - - keys = json.loads(reg_resp.data) - checkpoints: list[CheckpointTuple] = [] - - for key in keys: - cp_resp = client.get_state(store_name=self.store_name, key=key) - if not cp_resp.data: - continue - - wrapper = json.loads(cp_resp.data) - cp_data = wrapper.get('checkpoint', {}) - metadata = wrapper.get('metadata', {}) - cp = Checkpoint(**cp_data) - - checkpoints.append( - CheckpointTuple( - config=config, - checkpoint=cp, - parent_config=None, - metadata=metadata, - ) + reg_resp = self.client.get_state(store_name=self.store_name, key=self.REGISTRY_KEY) + if not reg_resp.data: + return [] + + keys = json.loads(reg_resp.data) + checkpoints: list[CheckpointTuple] = [] + + for key in keys: + cp_resp = self.client.get_state(store_name=self.store_name, key=key) + if not cp_resp.data: + continue + + wrapper = json.loads(cp_resp.data) + cp_data = wrapper.get('checkpoint', {}) + metadata = wrapper.get('metadata', {}) + cp = Checkpoint(**cp_data) + + checkpoints.append( + CheckpointTuple( + config=config, + checkpoint=cp, + parent_config=None, + metadata=metadata, ) + ) - return checkpoints + return checkpoints # remove a checkpoint and update the registry def delete_thread(self, config: RunnableConfig) -> None: key = self._get_key(config) - with DaprClient() as client: - client.delete_state(store_name=self.store_name, key=key) - - reg_resp = client.get_state(store_name=self.store_name, key=self.REGISTRY_KEY) - if not reg_resp.data: - return - - registry = json.loads(reg_resp.data) - if key in registry: - registry.remove(key) - client.save_state( - store_name=self.store_name, - key=self.REGISTRY_KEY, - value=json.dumps(registry), - ) + + self.client.delete_state(store_name=self.store_name, key=key) + + reg_resp = self.client.get_state(store_name=self.store_name, key=self.REGISTRY_KEY) + if not reg_resp.data: + return + + registry = json.loads(reg_resp.data) + + if key in registry: + registry.remove(key) + self.client.save_state( + store_name=self.store_name, + key=self.REGISTRY_KEY, + value=json.dumps(registry), + ) From 2ecc1cb9961bfd57348aed9f0eafa38258c311c5 Mon Sep 17 00:00:00 2001 From: yaron2 Date: Thu, 13 Nov 2025 21:59:58 -0500 Subject: [PATCH 9/9] linter Signed-off-by: yaron2 --- .../dapr/ext/langgraph/dapr_checkpointer.py | 14 +++++--------- 1 file changed, 5 insertions(+), 9 deletions(-) diff --git a/dapr-ext-langgraph/dapr/ext/langgraph/dapr_checkpointer.py b/dapr-ext-langgraph/dapr/ext/langgraph/dapr_checkpointer.py index e4bd3424f..123b313d1 100644 --- a/dapr-ext-langgraph/dapr/ext/langgraph/dapr_checkpointer.py +++ b/dapr-ext-langgraph/dapr/ext/langgraph/dapr_checkpointer.py @@ -26,15 +26,15 @@ def _get_key(self, config: RunnableConfig) -> str: thread_id = None if isinstance(config, dict): - thread_id = config.get("configurable", {}).get("thread_id") + thread_id = config.get('configurable', {}).get('thread_id') if not thread_id: - thread_id = config.get("thread_id") + thread_id = config.get('thread_id') if not thread_id: - thread_id = "default" + thread_id = 'default' - return f"{self.key_prefix}:{thread_id}" + return f'{self.key_prefix}:{thread_id}' # restore a checkpoint def get_tuple(self, config: RunnableConfig) -> CheckpointTuple | None: @@ -66,7 +66,6 @@ def put( parent_config: RunnableConfig | None, metadata: dict[str, Any], ) -> None: - key = self._get_key(config) checkpoint_serializable = { @@ -87,9 +86,7 @@ def put( if key not in registry: registry.append(key) - self.client.save_state( - self.store_name, self.REGISTRY_KEY, json.dumps(registry) - ) + self.client.save_state(self.store_name, self.REGISTRY_KEY, json.dumps(registry)) # incremental persistence (for streamed runs) def put_writes( @@ -99,7 +96,6 @@ def put_writes( task_id: str, task_path: str = '', ) -> None: - _ = task_id, task_path key = self._get_key(config)