clients-core 4.0.3

A collection of Python connection clients for E360 Microservices

E360 Clients Core

Installation

Use the E360 Artifactory package manager e360-pypi-local to install clients_core.

Requires Python 3.12 or newer.

pip install clients_core --index-url=https://rwes-artifactory01.internal.imsglobal.com/artifactory/api/pypi/e360-pypi-local/simple

Usage with Service Directory

1. Create a TokenHandler, with the right configuration for identity.

from clients_core.authentication.token_handler import OIDCTokenHandler

token_handler = OIDCTokenHandler("<oidc_token_endpoint>", "<oidc_client_id>", "<oidc_client_secret>")

2. Create a SecureRestClient for ServiceDirectory, and pass the token handler

from clients_core.secured_rest_client import SecuredRestClient
rest_client = SecuredRestClient("<url-to-service-directory", ["service-dir-scopes"], token_handler)

3. Create a ServiceDirectoryClient using the rest client

from sd_clients.service_directory_client import ServiceDirectoryClient
sd_client = ServiceDirectoryClient(rest_client)

4. The SD client can now be passed to ApiMatchClient which will allow lookups of services

from clients_core.api_match_client import ApiMatchClient, MatchSpec

match_client = ApiMatchClient(sd_client)
match_spec = MatchSpec("service-name", "endpoint-name",1 ,0, 1, ["service-scopes"])
service_rest_client = match_client.get_secured_client(match_spec, token_handler)

The service rest client can now be passed to a microservice client, or used directly to make REST calls to the target service

Usage with cache

If it is desired to use a cache, we need to wrap our TokenHandler with TokenCache. There are currently two Cache implementations, RedisCache and DictCache. RedisCache requires a connection URL when instantiated:

from clients_core.authentication.cache import RedisCache
from clients_core.authentication.token_cache import TokenCache

cache = RedisCache("<redis-connection-url>")
token_cache = TokenCache(cache, token_handler)  # token handler as created in step .1

token_cache can now be used in place of token_handler.

Development and Testing

Install uv (Python 3.12+ recommended).

uv sync --group dev

Run checks and tests:

uv run ruff check clients_core tests
uv run ruff format --check clients_core tests
uv run pytest

Run a single test file or test:

uv run pytest tests/test_secured_rest_client.py
uv run pytest tests/test_secured_rest_client.py::test_simple_post

Optional type check:

uv run mypy clients_core

Build a wheel locally:

uv build --out-dir dist

On the corporate network, you can point resolution at Artifactory, for example:

export UV_INDEX_URL=https://rwes-artifactory01.internal.imsglobal.com/artifactory/api/pypi/e360-pypi-local/simple
uv sync --group dev

See pyproject.toml for optional explicit e360-pypi indexes when adding internal-only dependencies.

Deployments

Auto CI enabled.

A deployment will happen every time a merge request is merged into master AND the version number is incremented in the clients_core/__init__.py file.

Development

After cloning this repository:

uv sync --group dev

Install pre-commit hooks:

uv run pre-commit install --install-hooks --overwrite

UML