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Python client for Grafana Loki

Project description

python-loki-client

WARNING: This is a beta release of the loki-client, the client is incomplete.

main build status

A client library for accessing Grafana Loki APIs.

Installation

To install the client:

pip install python-loki-client

Implemented endpoints

This client is still incomplete and implements only the following endpoints:

Query endpoints:

  • GET /loki/api/v1/query
  • GET /loki/api/v1/query_range
  • GET /loki/api/v1/labels

Status endpoints:

  • GET /ready
  • GET /services
  • GET /loki/api/v1/status/buildinfo

Other endpoints:

  • GET /loki/api/v1/format_query
  • POST /loki/api/v1/format_query

Usage

First, create a client:

from grafana_loki_client import Client

client = Client(base_url="https://loki.grafana.com")

Now call your endpoint and use your models:

from grafana_loki_client.models import MyDataModel
from grafana_loki_client.api.my_tag import get_my_data_model
from grafana_loki_client.types import Response

my_data: MyDataModel = get_my_data_model.sync(client=client)
# or if you need more info (e.g. status_code)
response: Response[MyDataModel] = get_my_data_model.sync_detailed(client=client)

Or do the same thing with an async version:

from grafana_loki_client.models import MyDataModel
from grafana_loki_client.api.my_tag import get_my_data_model
from grafana_loki_client.types import Response

my_data: MyDataModel = await get_my_data_model.asyncio(client=client)
response: Response[MyDataModel] = await get_my_data_model.asyncio_detailed(client=client)

By default, when you're calling an HTTPS API it will attempt to verify that SSL is working correctly. Using certificate verification is highly recommended most of the time, but sometimes you may need to authenticate to a server (especially an internal server) using a custom certificate bundle.

client = Client(
    base_url="https://internal_loki.grafana.com",
    verify_ssl="/path/to/certificate_bundle.pem",
)

You can also disable certificate validation altogether, but beware that this is a security risk.

client = Client(
    base_url="https://internal_loki.grafana.com", verify_ssl=False
)

Things to know:

  1. Every path/method combo becomes a Python module with four functions:

    1. sync: Blocking request that returns parsed data (if successful) or None
    2. sync_detailed: Blocking request that always returns a Request, optionally with parsed set if the request was successful.
    3. asyncio: Like sync but the async instead of blocking
    4. asyncio_detailed: Like sync_detailed by async instead of blocking
  2. All path/query params, and bodies become method arguments.

  3. If your endpoint had any tags on it, the first tag will be used as a module name for the function (my_tag above)

  4. Any endpoint which did not have a tag will be in grafana_loki_client.api.default

Generate code

This client is automatically generated from the OpenAPI 3.x specs manually defined in grafana_loki_openapi.yaml.

APIs are manually declared in the YAML file by reading the Grafana Loki API's documentation.

A code generator tool will use the OpenAPI document to generates a sync/async client.

To generare an updated copy of the client:

poetry install
poetry run make generate

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