| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| * |
| */ |
| |
| package org.apache.skywalking.oap.query.graphql; |
| |
| import com.linecorp.armeria.common.HttpRequest; |
| import com.linecorp.armeria.common.HttpResponse; |
| import com.linecorp.armeria.server.ServiceRequestContext; |
| import com.linecorp.armeria.server.annotation.Blocking; |
| import com.linecorp.armeria.server.annotation.Post; |
| import com.linecorp.armeria.server.graphql.GraphqlService; |
| import graphql.analysis.MaxQueryComplexityInstrumentation; |
| import graphql.schema.GraphQLSchema; |
| import lombok.extern.slf4j.Slf4j; |
| |
| @Slf4j |
| public class GraphQLQueryHandler { |
| private final GraphqlService graphqlService; |
| |
| public GraphQLQueryHandler( |
| final GraphQLQueryConfig config, |
| final GraphQLSchema schema) { |
| final int allowedComplexity = config.getMaxQueryComplexity(); |
| graphqlService = |
| GraphqlService |
| .builder() |
| .schema(schema) |
| .instrumentation(new MaxQueryComplexityInstrumentation(allowedComplexity, info -> { |
| log.warn( |
| "Aborting query because it's too complex, maximum allowed is [{}] but was [{}]", |
| allowedComplexity, |
| info.getComplexity()); |
| return true; |
| })) |
| .build(); |
| } |
| |
| @Blocking |
| @Post("/graphql") |
| public HttpResponse graphql( |
| final ServiceRequestContext ctx, |
| final HttpRequest req) throws Exception { |
| return graphqlService.serve(ctx, req); |
| } |
| } |