chore: add workflows/spring-graphql-webflux.yml

Author: hantsy

.github/workflows/spring-graphql-webflux.yml

@@ -0,0 +1,40 @@
+# This workflow will build a Java project with Gradle
+# For more information see: https://help.github.com/actions/language-and-framework-guides/building-and-testing-java-with-gradle
+
+name: spring-graphql-webflux
+
+on:
+  push:
+    paths:
+      - "spring-graphql-webflux/**"
+    branches: [ master ]
+  pull_request:
+    paths:
+      - "spring-graphql-webflux/**"
+    types:
+      - opened
+      - synchronize
+      - reopened
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v2
+    - name: Set up JDK
+      uses: actions/setup-java@v2
+      with:
+        java-version: '17'
+        distribution: 'zulu'
+    - name: Setup Postgres in Docker 
+      run: |
+        docker-compose up -d postgres
+        docker ps -a
+    - name: Build with Gradle
+      run: |
+        cd spring-graphql-webflux
+        chmod +x gradlew
+        ./gradlew build                        
+           

.gitignore

@@ -27,9 +27,6 @@ data/
 HELP.md
 .gradle
 build/
-!gradle/wrapper/gradle-wrapper.jar
-!**/src/main/**/build/
-!**/src/test/**/build/
 
 ### STS ###
 .apt_generated

spring-graphql-webflux/src/main/java/com/example/demo/gql/ExceptionHandlers.java

@@ -0,0 +1,29 @@
+package com.example.demo.gql;
+
+import com.example.demo.service.AuthorNotFoundException;
+import com.example.demo.service.PostNotFoundException;
+import graphql.GraphQLError;
+import graphql.GraphqlErrorBuilder;
+import graphql.schema.DataFetchingEnvironment;
+import org.springframework.graphql.execution.DataFetcherExceptionResolver;
+import org.springframework.graphql.execution.ErrorType;
+import org.springframework.stereotype.Component;
+import reactor.core.publisher.Mono;
+
+import java.util.Arrays;
+import java.util.List;
+
+@Component
+public class ExceptionHandlers implements DataFetcherExceptionResolver {
+    @Override
+    public Mono<List<GraphQLError>> resolveException(Throwable exception, DataFetchingEnvironment environment) {
+        if (exception instanceof PostNotFoundException || exception instanceof AuthorNotFoundException) {
+            return Mono.fromCallable(() -> Arrays.asList(
+                    GraphqlErrorBuilder.newError(environment)
+                            .errorType(ErrorType.NOT_FOUND)
+                            .message(exception.getMessage())
+                            .build()));
+        }
+        return Mono.empty();
+    }
+}

spring-graphql-webflux/src/main/java/com/example/demo/gql/dataloaders/DataLoaderConfig.java

@@ -0,0 +1,20 @@
+package com.example.demo.gql.dataloaders;
+
+import lombok.RequiredArgsConstructor;
+import org.dataloader.DataLoaderFactory;
+import org.dataloader.DataLoaderRegistry;
+import org.springframework.graphql.execution.DataLoaderRegistrar;
+import org.springframework.stereotype.Component;
+
+@Component
+@RequiredArgsConstructor
+public class DataLoaderConfig implements DataLoaderRegistrar {
+    private final AuthorsDataLoader authorsDataLoader;
+    private final CommentsDataLoader commentsDataLoader;
+
+    @Override
+    public void registerDataLoaders(DataLoaderRegistry registry) {
+        registry.register("commentsLoader", DataLoaderFactory.newMappedDataLoader(commentsDataLoader));
+        registry.register("authorsLoader", DataLoaderFactory.newDataLoader(authorsDataLoader));
+    }
+}