diff --git a/README.md b/README.md new file mode 100644 index 00000000..728c3c22 --- /dev/null +++ b/README.md @@ -0,0 +1,310 @@ + + +

+ + + OpenFeature Logo + +

+ +

OpenFeature Python SDK

+ + + +

+ + + Specification + + + + + + Latest version + + + +
+ + Build status + + + + Codecov + + + + Min python version + + + + Repo status + +

+ + +[OpenFeature](https://openfeature.dev) is an open specification that provides a vendor-agnostic, community-driven API for feature flagging that works with your favorite feature flag management tool. + + + +## 🚀 Quick start + +### Requirements + +- Python 3.8+ + +### Install + + + +#### Pip install + +```bash +pip install openfeature-sdk==0.3.1 +``` + +#### requirements.txt + +```bash +openfeature-sdk==0.3.1 +``` + +```python +pip install -r requirements.txt +``` + + + +### Usage + +```python +from openfeature import api +from openfeature.provider.in_memory_provider import InMemoryFlag, InMemoryProvider + +# flags defined in memory +my_flags = { + "v2_enabled": InMemoryFlag("on", {"on": True, "off": False}) +} + +# configure a provider +api.set_provider(InMemoryProvider(my_flags)) + +# create a client +client = api.get_client() + +# get a bool flag value +flag_value = client.get_boolean_value("v2_enabled", False) +print("Value: " + str(flag_value)) +``` + +## 🌟 Features + +| Status | Features | Description | +| ------ | ------------------------------- | ---------------------------------------------------------------------------------------------------------------------------------- | +| ✅ | [Providers](#providers) | Integrate with a commercial, open source, or in-house feature management tool. | +| ✅ | [Targeting](#targeting) | Contextually-aware flag evaluation using [evaluation context](https://openfeature.dev/docs/reference/concepts/evaluation-context). | +| ✅ | [Hooks](#hooks) | Add functionality to various stages of the flag evaluation life-cycle. | +| ❌ | [Logging](#logging) | Integrate with popular logging packages. | +| ❌ | [Named clients](#named-clients) | Utilize multiple providers in a single application. | +| ❌ | [Eventing](#eventing) | React to state changes in the provider or flag management system. | +| ✅ | [Shutdown](#shutdown) | Gracefully clean up a provider during application shutdown. | +| ✅ | [Extending](#extending) | Extend OpenFeature with custom providers and hooks. | + +Implemented: ✅ | In-progress: ⚠️ | Not implemented yet: ❌ + +### Providers + +[Providers](https://openfeature.dev/docs/reference/concepts/provider) are an abstraction between a flag management system and the OpenFeature SDK. +Look [here](https://openfeature.dev/ecosystem?instant_search%5BrefinementList%5D%5Btype%5D%5B0%5D=Provider&instant_search%5BrefinementList%5D%5Btechnology%5D%5B0%5D=python) for a complete list of available providers. +If the provider you're looking for hasn't been created yet, see the [develop a provider](#develop-a-provider) section to learn how to build it yourself. + +Once you've added a provider as a dependency, it can be registered with OpenFeature like this: + +```python +from openfeature import api +from openfeature.provider.no_op_provider import NoOpProvider + +api.set_provider(NoOpProvider()) +open_feature_client = api.get_client() +``` + + + +### Targeting + +Sometimes, the value of a flag must consider some dynamic criteria about the application or user, such as the user's location, IP, email address, or the server's location. +In OpenFeature, we refer to this as [targeting](https://openfeature.dev/specification/glossary#targeting). +If the flag management system you're using supports targeting, you can provide the input data using the [evaluation context](https://openfeature.dev/docs/reference/concepts/evaluation-context). + +```python +from openfeature.api import ( + get_client, + get_provider, + set_provider, + get_evaluation_context, + set_evaluation_context, +) + +global_context = EvaluationContext( + targeting_key="targeting_key1", attributes={"application": "value1"} +) +request_context = EvaluationContext( + targeting_key="targeting_key2", attributes={"email": request.form['email']} +) + +## set global context +set_evaluation_context(global_context) + +# merge second context +client = get_client(name="No-op Provider") +client.get_string_value("email", "fallback", request_context) +``` + +### Hooks + +[Hooks](https://openfeature.dev/docs/reference/concepts/hooks) allow for custom logic to be added at well-defined points of the flag evaluation life-cycle. +Look [here](https://openfeature.dev/ecosystem/?instant_search%5BrefinementList%5D%5Btype%5D%5B0%5D=Hook&instant_search%5BrefinementList%5D%5Btechnology%5D%5B0%5D=python) for a complete list of available hooks. +If the hook you're looking for hasn't been created yet, see the [develop a hook](#develop-a-hook) section to learn how to build it yourself. + +Once you've added a hook as a dependency, it can be registered at the global, client, or flag invocation level. + +```python +from openfeature.api import add_hooks +from openfeature.flag_evaluation import FlagEvaluationOptions + +# set global hooks at the API-level +add_hooks([MyHook()]) + +# or configure them in the client +client = OpenFeatureClient() +client.add_hooks([MyHook()]) + +# or at the invocation-level +options = FlagEvaluationOptions(hooks=[MyHook()]) +client.get_boolean_flag("my-flag", False, flag_evaluation_options=options) +``` + +### Logging + +Logging customization is not yet available in the Python SDK. + +### Named clients + +Named clients are not yet available in the Python SDK. Progress on this feature can be tracked [here](https://github.com/open-feature/python-sdk/issues/125). + +### Eventing + +Events are not yet available in the Python SDK. Progress on this feature can be tracked [here](https://github.com/open-feature/python-sdk/issues/125). + +### Shutdown + +A shutdown method is not yet available in the Python SDK. Progress on this feature can be tracked [here](https://github.com/open-feature/python-sdk/issues/125). + +## Extending + +### Develop a provider + +To develop a provider, you need to create a new project and include the OpenFeature SDK as a dependency. +This can be a new repository or included in [the existing contrib repository](https://github.com/open-feature/python-sdk-contrib) available under the OpenFeature organization. +You’ll then need to write the provider by implementing the `AbstractProvider` class exported by the OpenFeature SDK. + +```python +from typing import List, Optional + +from openfeature.evaluation_context import EvaluationContext +from openfeature.flag_evaluation import FlagResolutionDetails +from openfeature.provider.provider import AbstractProvider + +class MyProvider(AbstractProvider): + def get_metadata(self) -> Metadata: + ... + + def get_provider_hooks(self) -> List[Hook]: + return [] + + def resolve_boolean_details( + self, + flag_key: str, + default_value: bool, + evaluation_context: Optional[EvaluationContext] = None, + ) -> FlagResolutionDetails[bool]: + ... + + def resolve_string_details( + self, + flag_key: str, + default_value: str, + evaluation_context: Optional[EvaluationContext] = None, + ) -> FlagResolutionDetails[str]: + ... + + def resolve_integer_details( + self, + flag_key: str, + default_value: int, + evaluation_context: Optional[EvaluationContext] = None, + ) -> FlagResolutionDetails[int]: + ... + + def resolve_float_details( + self, + flag_key: str, + default_value: float, + evaluation_context: Optional[EvaluationContext] = None, + ) -> FlagResolutionDetails[float]: + ... + + def resolve_object_details( + self, + flag_key: str, + default_value: Union[dict, list], + evaluation_context: Optional[EvaluationContext] = None, + ) -> FlagResolutionDetails[Union[dict, list]]: + ... +``` + +> Built a new provider? [Let us know](https://github.com/open-feature/openfeature.dev/issues/new?assignees=&labels=provider&projects=&template=document-provider.yaml&title=%5BProvider%5D%3A+) so we can add it to the docs! + +### Develop a hook + +To develop a hook, you need to create a new project and include the OpenFeature SDK as a dependency. +This can be a new repository or included in [the existing contrib repository](https://github.com/open-feature/python-sdk-contrib) available under the OpenFeature organization. +Implement your own hook by creating a hook that inherits from the `Hook` class. +Any of the evaluation life-cycle stages (`before`/`after`/`error`/`finally_after`) can be override to add the desired business logic. + +```python +from openfeature.hook import Hook + +class MyHook(Hook): + def after(self, hook_context: HookContext, details: FlagEvaluationDetails, hints: dict): + print("This runs after the flag has been evaluated") + +``` + +> Built a new hook? [Let us know](https://github.com/open-feature/openfeature.dev/issues/new?assignees=&labels=hook&projects=&template=document-hook.yaml&title=%5BHook%5D%3A+) so we can add it to the docs! + + + +## ⭐️ Support the project + +- Give this repo a ⭐️! +- Follow us on social media: + - Twitter: [@openfeature](https://twitter.com/openfeature) + - LinkedIn: [OpenFeature](https://www.linkedin.com/company/openfeature/) +- Join us on [Slack](https://cloud-native.slack.com/archives/C0344AANLA1) +- For more, check out our [community page](https://openfeature.dev/community/) + +## 🤝 Contributing + +Interested in contributing? Great, we'd love your help! To get started, take a look at the [CONTRIBUTING](CONTRIBUTING.md) guide. + +### Thanks to everyone who has already contributed + + + Pictures of the folks who have contributed to the project + + +Made with [contrib.rocks](https://contrib.rocks). + + diff --git a/readme.md b/readme.md deleted file mode 100644 index 13564bd0..00000000 --- a/readme.md +++ /dev/null @@ -1,201 +0,0 @@ - -

- - - - OpenFeature Logo - -

- -

OpenFeature Python SDK

- -[![PyPI version](https://badge.fury.io/py/openfeature-sdk.svg)](https://badge.fury.io/py/openfeature-sdk) -![Python 3.8+](https://img.shields.io/badge/python->=3.8-blue.svg) -[![Project Status: WIP – Initial development is in progress, but there has not yet been a stable, usable release suitable for the public.](https://www.repostatus.org/badges/latest/wip.svg)](https://www.repostatus.org/#wip) -[![Specification](https://img.shields.io/static/v1?label=Specification&message=v0.3.0&color=red)](https://github.com/open-feature/spec/tree/v0.3.0) -[![on-merge](https://github.com/open-feature/python-sdk/actions/workflows/merge.yml/badge.svg)](https://github.com/open-feature/python-sdk/actions/workflows/merge.yml) -[![codecov](https://codecov.io/gh/open-feature/python-sdk/branch/main/graph/badge.svg?token=FQ1I444HB3)](https://codecov.io/gh/open-feature/python-sdk) - -> ⚠️ Development is in progress, but there's not a stable release available. ⚠️ - -This is the Python implementation of [OpenFeature](https://openfeature.dev), a vendor-agnostic abstraction library for evaluating feature flags. - -We support multiple data types for flags (numbers, strings, booleans, objects) as well as hooks, which can alter the lifecycle of a flag evaluation. - -This library is intended to be used in server-side contexts and has not been evaluated for use in mobile devices. - -## 🔍 Requirements: - -- Python 3.8+ - -## 📦 Installation: - -### Add it to your build - - - -Pip install - -```bash -pip install openfeature-sdk==0.3.1 -``` - -requirements.txt - -```bash -openfeature-sdk==0.3.1 -``` - -```python -pip install requirements.txt -``` - - - -## 🌟 Features: - -- support for various backend [providers](https://openfeature.dev/docs/reference/concepts/provider) -- easy integration and extension via [hooks](https://openfeature.dev/docs/reference/concepts/hooks) -- bool, string, numeric, and object flag types -- [context-aware](https://openfeature.dev/docs/reference/concepts/evaluation-context) evaluation - -## 🚀 Usage: - -### Configure it - -In order to use the sdk there is some minor configuration. Follow the script below: - -```python -from openfeature import api -from openfeature.provider.no_op_provider import NoOpProvider - -api.set_provider(NoOpProvider()) -open_feature_client = api.get_client() -``` - -### Basics: - -While Boolean provides the simplest introduction, we offer a variety of flag types. - -```python -# Depending on the flag type, use one of the methods below -flag_key = "PROVIDER_FLAG" -boolean_result = open_feature_client.get_boolean_value(key=flag_key,default_value=False) -integer_result = open_feature_client.get_integer_value(key=flag_key,default_value=-1) -float_result = open_feature_client.get_float_value(key=flag_key,default_value=-1) -string_result = open_feature_client.get_string_value(key=flag_key,default_value="") -object_result = open_feature_client.get_object_value(key=flag_key,default_value={}) -``` - -You can also bind a provider to a specific client by name instead of setting that provider globally: - -```python - -api.set_provider(NoOpProvider()) -``` - -Each provider class may have further setup required i.e. secret keys, environment variables etc - -### Context-aware evaluation: - -Sometimes the value of a flag must take into account some dynamic criteria about the application or user, such as the user location, IP, email address, or the location of the server. -In OpenFeature, we refer to this as [`targeting`](https://openfeature.dev/specification/glossary#targeting). -If the flag system you're using supports targeting, you can provide the input data using the `EvaluationContext`. - -```python -from openfeature.api import ( - get_client, - get_provider, - set_provider - get_evaluation_context, - set_evaluation_context, -) - -global_context = EvaluationContext( - targeting_key="targeting_key1", attributes={"application": "value1"} -) -request_context = EvaluationContext( - targeting_key="targeting_key2", attributes={"email": request.form['email']} -) - -## set global context -set_evaluation_context(first_context) - -# merge second context -client = get_client(name="No-op Provider", version="0.5.2") -client.get_string_value("email", None, request_context) - -``` - -### Events - -TBD (See Issue [#131](https://github.com/open-feature/python-sdk/issues/131)) - -### Providers: - -To develop a provider, you need to create a new project and include the OpenFeature SDK as a dependency. This can be a new repository or included in [the existing contrib repository](https://github.com/open-feature/python-sdk-contrib) available under the OpenFeature organization. Finally, you’ll then need to write the provider itself. This can be accomplished by implementing the `Provider` interface exported by the OpenFeature SDK. - -See [here](https://openfeature.dev/ecosystem) for a catalog of available providers. - -### Hooks: - -A hook is a mechanism that allows for adding arbitrary behavior at well-defined points of the flag evaluation life-cycle. Use cases include validating the resolved flag value, modifying or adding data to the evaluation context, logging, telemetry, and tracking. - -```python -from openfeature.hook import Hook - -class MyHook(Hook): - def after(self, hook_context: HookContext, details: FlagEvaluationDetails, hints: dict): - print("This runs after the flag has been evaluated") - - -# set global hooks at the API-level -from openfeature.api import add_hooks -add_hooks([MyHook()]) - -# or configure them in the client -client = OpenFeatureClient() -client.add_hooks([MyHook()]) -``` - -See [here](https://openfeature.dev/ecosystem) for a catalog of available hooks. - -### Logging: - -TBD - -## ⭐️ Support the project - -- Give this repo a ⭐️! -- Follow us on social media: - - Twitter: [@openfeature](https://twitter.com/openfeature) - - LinkedIn: [OpenFeature](https://www.linkedin.com/company/openfeature/) -- Join us on [Slack](https://cloud-native.slack.com/archives/C0344AANLA1) -- For more check out our [community page](https://openfeature.dev/community/) - -## 🤝 Contributing - -Interested in contributing? Great, we'd love your help! To get started, take a look at the [CONTRIBUTING](CONTRIBUTING.md) guide. - -### Thanks to everyone that has already contributed - - - - Pictures of the folks who have contributed to the project - - -Made with [contrib.rocks](https://contrib.rocks). - -## Contacting us - -We hold regular meetings which you can see [here](https://github.com/open-feature/community/#meetings-and-events). - -We are also present on the `#openfeature` channel in the [CNCF slack](https://slack.cncf.io/). - -## 📜 License - -[Apache License 2.0](LICENSE) - - - -[openfeature-website]: https://openfeature.dev