gqlclient

gqlclient

|codecov|

.. image:: https://readthedocs.org/projects/graphql-client/badge/?version=latest :target: https://dkistdc.readthedocs.io/projects/graphql-client/en/latest/?badge=latest :alt: Documentation Status

A pythonic interface for making requests to a GraphQL server using standard library or pydantic dataclasses to spare you from string manipulation.

Features

• Use standard library dataclasses to specify graphql parameters and responses

• Use pydantic <https://pypi.org/project/pydantic/>__ dataclasses to specify graphql parameters and responses that have type validation

• Create and execute GraphQL Queries based upon typed models

• Create and execute GraphQL Mutations based upon typed models

• Async support

Installation

.. code:: bash

pip install gqlclient

with asyncio support

.. code:: bash

pip install gqlclient[async]

with pydantic support

.. code:: bash

pip install gqlclient[pydantic]

for developers

.. code:: bash

pip install gqlclient[test] pip install pre-commit pre-commit install

Examples

Query

.. code:: python

from pydantic.dataclasses import dataclass

from gqlclient import GraphQLClient

@dataclass class Parameters: attr_one: str attr_two: int

@dataclass class Response: attr_three: int attr_four: str

client = GraphQLClient(gql_uri="http://localhost:5000/graphql") parameters = Parameters(attr_one="foo", attr_two=3) query = client.get_query(query_base="baseType", query_response_cls=Response, query_parameters=parameters) print(query)

{'query': '{baseType(filterParams: {attr_one: "foo", attr_two: 3}){attr_three, attr_four} }'}

response = client.execute_gql_query(query_base="baseType", query_response_cls=Response, query_parameters=parameters, response_encoder=json_encoder) print(response)

with the default dataclass_encoder

[Response(attr_three=5, attr_four="bar")]

Mutation

.. code:: python

from pydantic.dataclasses import dataclass

from gqlclient import GraphQLClient

@dataclass class Parameters: attr_one: str attr_two: int

@dataclass class Response: attr_three: int attr_four: str

client = GraphQLClient(gql_uri="http://localhost:5000/graphql") parameters = Parameters(attr_one="foo", attr_two=3) query = client.get_mutation(mutation_base="baseMutation", mutation_response_cls=Response, mutation_parameters=parameters) print(query)

{'query': 'mutation baseType {baseType(mutateParams: {attr_one: "foo", attr_two: 3}){attr_three, attr_four} }', 'operationName': 'baseType'}

response = client.execute_gql_mutation(mutation_base="baseMutation", mutation_response_cls=Response, mutation_parameters=parameters) print(response)

with the default dataclass_encoder

[Response(attr_three=5, attr_four="bar")]

Encoders

.. code:: python

from dataclasses import dataclass

from gqlclient import GraphQLClient
from gqlclient import json_encoder

# set the default encoder to the json_encoder
client = GraphQLClient(gql_uri="http://127.0.0.1:30003/graphql", response_encoder=json_encoder)

@dataclass
class QueryResponse:
    workflowId: int
    workflowName: str
    workflowDescription: str | None

response = client.execute_gql_query("workflows",QueryResponse)
print(response)
# Response is a json formatted string
# {"workflows": [{"workflowId": 1, "workflowName": "gql3_full - workflow_name", "workflowDescription": "gql3_full - workflow_description"}, {"workflowId": 2, "workflowName": "VBI base calibration", "workflowDescription": "The base set of calibration tasks for VBI."}]}

from gqlclient import dataclass_encoder
# for this call override the default encoder
response = client.execute_gql_query("workflows", QueryResponse, response_encoder=dataclass_encoder)
print(response)
# Response type is a list of dataclasses
# [QueryResponse(workflowId=1, workflowName='gql3_full - workflow_name', workflowDescription='gql3_full - workflow_description'), QueryResponse(workflowId=2, workflowName='VBI base calibration', workflowDescription='The base set of calibration tasks for VBI.')]

.. |codecov| image:: https://codecov.io/bb/dkistdc/graphql_client/branch/master/graph/badge.svg :target: https://codecov.io/bb/dkistdc/graphql_client