Create a WSGI Application for a GraphQL schema.

Use the GraphQLApplication from wsgi_graphql.

from wsgi_graphql import GraphQLApplication
application = GraphQLApplication(schema)

• schema: GraphQLSchema to serve with this application.
• execute_options: Dictionary of options to be passed to graphql.execute via graphql_server.run_http_query. If the dictionary values are callable they will be called (see example below).
• format_error: Function to format errors (defaults to graphql_server.default_format_error).
• encode: Function to encode dictionary (defaults to graphql_server.json_encode).

All execute_options can be callable (i.e. functions) and will receive the current environ as an argument. This can be used for tasks like parsing authentication tokens and inserting results as context_value.

This snippet from the example.py sets the context_value to a dictionary containing the value of the request header greet.

application = GraphQLApplication(schema, execute_options={
    'context_value': lambda environ: {
        'greet': environ.get('HTTP_GREET')
    }
})

This curl command will return {"data":{"hello":"world"}}.

curl --request POST\
 --url http://localhost:8080\
 --header 'Content-Type: application/graphql'\
 --header 'greet: world'\
 --data 'query {hello}'