93 lines
2.4 KiB
Ruby
93 lines
2.4 KiB
Ruby
# frozen_string_literal: true
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class GraphqlController < ApplicationController
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# Unauthenticated users have access to the API for public data
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skip_before_action :authenticate_user!
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# Allow missing CSRF tokens, this would mean that if a CSRF is invalid or missing,
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# the user won't be authenticated but can proceed as an anonymous user.
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#
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# If a CSRF is valid, the user is authenticated. This makes it easier to play
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# around in GraphiQL.
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protect_from_forgery with: :null_session, only: :execute
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before_action :authorize_access_api!
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before_action(only: [:execute]) { authenticate_sessionless_user!(:api) }
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def execute
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result = multiplex? ? execute_multiplex : execute_query
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render json: result
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end
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rescue_from StandardError do |exception|
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log_exception(exception)
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render_error("Internal server error")
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end
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rescue_from Gitlab::Graphql::Variables::Invalid do |exception|
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render_error(exception.message, status: :unprocessable_entity)
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end
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rescue_from Gitlab::Graphql::Errors::ArgumentError do |exception|
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render_error(exception.message, status: :unprocessable_entity)
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end
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private
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def execute_multiplex
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GitlabSchema.multiplex(multiplex_queries, context: context)
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end
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def execute_query
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variables = build_variables(params[:variables])
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operation_name = params[:operationName]
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GitlabSchema.execute(query, variables: variables, context: context, operation_name: operation_name)
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end
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def query
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params[:query]
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end
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def multiplex_queries
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params[:_json].map do |single_query_info|
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{
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query: single_query_info[:query],
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variables: build_variables(single_query_info[:variables]),
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operation_name: single_query_info[:operationName],
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context: context
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}
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end
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end
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def context
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@context ||= { current_user: current_user }
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end
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def build_variables(variable_info)
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Gitlab::Graphql::Variables.new(variable_info).to_h
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end
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def multiplex?
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params[:_json].present?
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end
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def authorize_access_api!
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access_denied!("API not accessible for user.") unless can?(current_user, :access_api)
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end
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# Overridden from the ApplicationController to make the response look like
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# a GraphQL response. That is nicely picked up in Graphiql.
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def render_404
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render_error("Not found!", status: :not_found)
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end
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def render_error(message, status: 500)
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error = { errors: [message: message] }
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render json: error, status: status
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end
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end
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