feat(scheduler): add BaseJoblet to foundry-core

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: olivermeyer

ATTRIBUTIONS.md

@@ -360,7 +360,7 @@ SOFTWARE.
 
 ```
 
-## aignostics-foundry-core (0.8.2) - MIT License
+## aignostics-foundry-core (0.9.0) - MIT License
 
 🏭 Foundational infrastructure for Foundry components.
 
@@ -2543,6 +2543,36 @@ THE SOFTWARE.
 
 ```
 
+## chancy (0.25.1) - MIT License
+
+A simple and flexible job queue for Python
+
+* URL: https://github.com/tktech/chancy
+* Author(s): Tyler Kennedy <tk@tkte.ch>
+
+### License Text
+
+```
+Copyright (c) 2024 Tyler Kennedy <tk@tkte.ch>
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of
+this software and associated documentation files (the "Software"), to deal in
+the Software without restriction, including without limitation the rights to
+use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+the Software, and to permit persons to whom the Software is furnished to do so,
+subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+```
+
 ## chardet (5.2.0) - GNU Lesser General Public License v2 or later (LGPLv2+)
 
 Universal encoding detector for Python 3
@@ -3406,7 +3436,26 @@ Code coverage measurement for Python
 
 ```
 
-## cryptography (46.0.6) - UNKNOWN
+## croniter (6.2.2) - MIT License
+
+croniter provides iteration for datetime object with cron like format
+
+* URL: https://github.com/pallets-eco/croniter
+* Author(s): Matsumoto Taichi <taichino@gmail.com>, kiorky <kiorky@cryptelium.net>, Ash Berlin-Taylor <ash@apache.org>, Jarek Potiuk <jarek@potiuk.com>
+
+### License Text
+
+```
+Copyright (C) 2010-2012 Matsumoto Taichi
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+```
+
+## cryptography (46.0.7) - UNKNOWN
 
 cryptography is a package which provides cryptographic recipes and primitives to Python developers.
 
@@ -8515,6 +8564,184 @@ Library.
 
 ```
 
+## psycopg-pool (3.3.0) - UNKNOWN
+
+Connection Pool for Psycopg
+
+* URL: https://psycopg.org/
+* Author(s): Daniele Varrazzo <daniele.varrazzo@gmail.com>
+
+### License Text
+
+```
+                   GNU LESSER GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+
+  This version of the GNU Lesser General Public License incorporates
+the terms and conditions of version 3 of the GNU General Public
+License, supplemented by the additional permissions listed below.
+
+  0. Additional Definitions.
+
+  As used herein, "this License" refers to version 3 of the GNU Lesser
+General Public License, and the "GNU GPL" refers to version 3 of the GNU
+General Public License.
+
+  "The Library" refers to a covered work governed by this License,
+other than an Application or a Combined Work as defined below.
+
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+
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+
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+   on the Library, uncombined with any other library facilities,
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+
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+   is a work based on the Library, and explaining where to find the
+   accompanying uncombined form of the same work.
+
+  6. Revised Versions of the GNU Lesser General Public License.
+
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+of the GNU Lesser General Public License from time to time. Such new
+versions will be similar in spirit to the present version, but may
+differ in detail to address new problems or concerns.
+
+  Each version is given a distinguishing version number. If the
+Library as you received it specifies that a certain numbered version
+of the GNU Lesser General Public License "or any later version"
+applies to it, you have the option of following the terms and
+conditions either of that published version or of any later version
+published by the Free Software Foundation. If the Library as you
+received it does not specify a version number of the GNU Lesser
+General Public License, you may choose any version of the GNU Lesser
+General Public License ever published by the Free Software Foundation.
+
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+Library.
+
+```
+
 ## py-serializable (2.1.0) - Apache Software License
 
 Library for serializing and deserializing Python Objects to and from JSON and XML.

pyproject.toml

@@ -62,6 +62,7 @@ dependencies = [
     "rich>=14,<15",
     "sentry-sdk>=2,<3",
     "sqlalchemy[postgresql-psycopgbinary,asyncio]>=2,<3",
+    "chancy[cron]>=0.25.1,<1",
     "nicegui>=3,<4",
     "truststore>=0.9,<1",
     "typer>=0.14,<1",

src/aignostics_foundry_core/AGENTS.md

@@ -26,6 +26,7 @@ This file provides an overview of all modules in `aignostics_foundry_core`, thei
 | **foundry** | Project context injection | `PackageMetadata`, `FoundryContext`, `FoundryContext.from_package()`, `set_context()`, `get_context()` — centralised project-specific values (name, version, `version_full`, `version_with_vcs_ref`, environment, env files, URLs, `python_version`, `metadata: PackageMetadata` (description, author_name, author_email), runtime mode flags `is_container`, `is_cli`, `is_test`, `is_library`, `database: DatabaseSettings \| None`) derived from package metadata and environment variables; `from_package()` populates `metadata` from `importlib.metadata` and `database` from `{env_prefix}DB_*` env vars when `{env_prefix}DB_URL` is present                                                                                                                         |
 | **di** | Dependency injection | `locate_subclasses(cls, *, context=None)`, `locate_implementations(cls, *, context=None)`, `load_modules(*, context=None)`, `discover_plugin_packages`, `clear_caches`, `PLUGIN_ENTRY_POINT_GROUP` for plugin and subclass discovery                                                                                                                                                                                                                                                                                                                                                                                                       |
 | **health** | Service health checks | `Health` model and `HealthStatus` enum for tree-structured health status                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |
+| **scheduler** | Chancy-backed job module base class | `BaseJoblet` ABC with `get_queues()`, `get_jobs()`, `get_crons()`, `get_triggers()` hooks and `register_queues/jobs/crons/triggers()` / `unregister_queues/jobs/crons/triggers()` lifecycle methods; `key()` returns second-to-last module component for identification |
 | **settings** | Pydantic settings loading | `OpaqueSettings`, `load_settings`, `strip_to_none_before_validator`, `UNHIDE_SENSITIVE_INFO` for env-based settings with secret masking and user-friendly validation errors; `console`, `Panel`, and `Text` are imported lazily inside `load_settings` (error path only)                                                                                                                                                                                                                                                                                                                                                                   |
 
 ## Module Descriptions
@@ -314,6 +315,45 @@ This file provides an overview of all modules in `aignostics_foundry_core`, thei
 - **Dependencies**: `fastapi>=0.110,<1` (for typing/DI); `pydantic-settings>=2`; `aignostics_foundry_core.health`, `aignostics_foundry_core.settings`
 - **Import**: `from aignostics_foundry_core.service import BaseService`
 
+### scheduler
+
+**Chancy-backed job module base class**
+
+- **Purpose**: Provides `BaseJoblet` — a reusable base class for building modular Chancy job units (joblets) that can be auto-registered with the scheduler. Any Foundry component that wants to define queues, one-time jobs, cron schedules, or database triggers extends `BaseJoblet` instead of coupling directly to the scheduler's internals.
+- **Key Features**:
+  - `get_queues()` — override to return `list[Queue]` declarations for this joblet (empty by default)
+  - `get_jobs()` — override to return `list[Job]` for one-time or delayed pushes (empty by default)
+  - `get_crons()` — override to return `list[tuple[str, Job]]` of `(cron_expression, job)` pairs; jobs **must** have a `unique_key` set or they will be skipped with a warning
+  - `get_triggers()` — override to return `list[tuple[str, list[str], Job]]` of `(table, operations, job_template)` for PostgreSQL trigger-based dispatch
+  - `register_queues/jobs/crons/triggers(chancy)` — async lifecycle methods; call them on startup to declare resources
+  - `unregister_queues/jobs/crons/triggers(chancy)` — async lifecycle methods; call them on shutdown to clean up resources
+  - `key()` — classmethod; returns the second-to-last dotted segment of `cls.__module__` (e.g. `"hello_world"` from `"bridge.hello_world.Joblet"`) for logging and identification
+- **Location**: `aignostics_foundry_core/scheduler.py`
+- **Dependencies**: `chancy[cron]>=0.25.1,<1` (mandatory); `loguru>=0.7,<1`
+- **Import**:
+  ```python
+  from aignostics_foundry_core.scheduler import BaseJoblet
+  ```
+- **Usage example**:
+  ```python
+  from chancy import Job, Queue, job
+  from aignostics_foundry_core.scheduler import BaseJoblet
+
+
+  @job(queue="my_module")
+  async def my_task() -> None: ...
+
+
+  class Joblet(BaseJoblet):
+      @staticmethod
+      def get_queues() -> list[Queue]:
+          return [Queue("my_module", concurrency=4)]
+
+      @staticmethod
+      def get_crons() -> list[tuple[str, Job]]:
+          return [("* * * * *", my_task.job.with_unique_key("my_cron"))]
+  ```
+
 ### cli
 
 **Typer CLI preparation utilities**