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Maven plugin support for client code generation + example projects #37 (#62)
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‎.circleci/config.yml‎

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@@ -62,8 +62,11 @@ jobs:
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name: Build plugin and run unit tests
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command: cd ~/repo/plugins/maven/graphql-java-codegen-maven-plugin && mvn install
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- run:
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name: Build example plugin project
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command: cd ~/repo/plugins/maven/example && mvn package
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name: Build example-server plugin project
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command: cd ~/repo/plugins/maven/example-server && mvn package
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- run:
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name: Build example-client plugin project
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command: cd ~/repo/plugins/maven/example-client && mvn package
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build-graphql-java-codegen-gradle-plugin:
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description:
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Build gradle plugin

‎plugins/maven/example-client/pom.xml‎

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<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
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<modelVersion>4.0.0</modelVersion>
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<groupId>io.github.kobylynskyi</groupId>
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<artifactId>graphql-codegen-maven-plugin-example-client</artifactId>
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<version>1.6.0-SNAPSHOT</version>
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<name>graphql-codegen-maven-plugin-example-client</name>
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<build>
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<plugins>
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<!-- GraphQL Codegen Maven plugin -->
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<plugin>
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<groupId>io.github.kobylynskyi</groupId>
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<artifactId>graphql-codegen-maven-plugin</artifactId>
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<version>${project.version}</version>
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<executions>
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<execution>
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<id>generate-sources-client</id>
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<goals>
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<goal>generate</goal>
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</goals>
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<configuration>
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<graphqlSchemaPaths>
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<graphqlSchemaPath>${project.basedir}/src/main/resources/external/schema-product-service.graphqls</graphqlSchemaPath>
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</graphqlSchemaPaths>
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<outputDir>${project.build.directory}/generated-sources/client</outputDir>
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<modelPackageName>io.github.kobylynskyi.product.graphql.model</modelPackageName>
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<customTypesMapping>
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<DateTime>java.util.Date</DateTime>
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</customTypesMapping>
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<modelNameSuffix>TO</modelNameSuffix>
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<generateRequests>true</generateRequests>
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<generateApis>false</generateApis>
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</configuration>
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</execution>
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<execution>
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<id>generate-sources-server</id>
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<goals>
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<goal>generate</goal>
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</goals>
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<configuration>
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<graphqlSchemaPaths>
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<graphqlSchemaPath>${project.basedir}/src/main/resources/schema.graphqls</graphqlSchemaPath>
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</graphqlSchemaPaths>
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<outputDir>${project.build.directory}/generated-sources/server</outputDir>
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<apiPackageName>io.github.kobylynskyi.order.graphql.api</apiPackageName>
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<modelPackageName>io.github.kobylynskyi.order.graphql.model</modelPackageName>
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<customTypesMapping>
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<DateTime>java.util.Date</DateTime>
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</customTypesMapping>
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<modelNameSuffix>TO</modelNameSuffix>
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</configuration>
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</execution>
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</executions>
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</plugin>
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<!-- GraphQL Codegen Maven plugin -->
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<plugin>
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<groupId>org.apache.maven.plugins</groupId>
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<artifactId>maven-compiler-plugin</artifactId>
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<version>3.8.1</version>
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<configuration>
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<encoding>UTF-8</encoding>
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<source>1.8</source>
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<target>1.8</target>
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<showDeprecation>true</showDeprecation>
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<annotationProcessorPaths>
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<annotationProcessorPath>
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<groupId>org.projectlombok</groupId>
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<artifactId>lombok</artifactId>
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<version>1.18.8</version>
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</annotationProcessorPath>
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<annotationProcessorPath>
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<groupId>org.mapstruct</groupId>
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<artifactId>mapstruct-processor</artifactId>
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<version>1.3.0.Final</version>
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</annotationProcessorPath>
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</annotationProcessorPaths>
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</configuration>
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</plugin>
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</plugins>
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</build>
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<dependencies>
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<dependency>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-starter-web</artifactId>
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<version>2.1.7.RELEASE</version>
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</dependency>
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<dependency>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-starter-data-mongodb</artifactId>
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<version>2.1.7.RELEASE</version>
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</dependency>
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<dependency>
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<groupId>org.springframework.data</groupId>
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<artifactId>spring-data-commons</artifactId>
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<version>2.1.10.RELEASE</version>
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</dependency>
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<dependency>
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<groupId>com.graphql-java-kickstart</groupId>
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<artifactId>graphql-java-tools</artifactId>
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<version>5.6.1</version>
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</dependency>
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<dependency>
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<groupId>com.graphql-java-kickstart</groupId>
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<artifactId>graphql-spring-boot-starter</artifactId>
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<version>5.10.0</version>
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</dependency>
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<dependency>
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<groupId>com.graphql-java-kickstart</groupId>
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<artifactId>graphiql-spring-boot-starter</artifactId>
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<version>5.10.0</version>
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</dependency>
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<dependency>
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<groupId>io.github.kobylynskyi</groupId>
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<artifactId>graphql-java-codegen</artifactId>
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<version>${project.version}</version>
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</dependency>
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<dependency>
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<groupId>org.apache.httpcomponents</groupId>
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<artifactId>httpclient</artifactId>
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<version>4.5.12</version>
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</dependency>
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<dependency>
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<groupId>org.mapstruct</groupId>
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<artifactId>mapstruct</artifactId>
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<version>1.3.0.Final</version>
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</dependency>
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<dependency>
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<groupId>org.projectlombok</groupId>
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<artifactId>lombok</artifactId>
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<version>1.18.8</version>
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</dependency>
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</dependencies>
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</project>

plugins/maven/example/src/main/java/io/github/kobylynskyi/bikeshop/Application.java renamed to plugins/maven/example-client/src/main/java/io/github/kobylynskyi/order/Application.java

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@@ -1,4 +1,4 @@
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package io.github.kobylynskyi.bikeshop;
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package io.github.kobylynskyi.order;
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import org.springframework.boot.SpringApplication;
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import org.springframework.boot.autoconfigure.SpringBootApplication;

‎plugins/maven/example-client/src/main/java/io/github/kobylynskyi/order/external/ExternalProductMapper.java‎

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package io.github.kobylynskyi.order.external;
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import io.github.kobylynskyi.order.model.Product;
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import io.github.kobylynskyi.product.graphql.model.ProductTO;
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import org.mapstruct.Mapper;
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@Mapper(componentModel = "spring")
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public interface ExternalProductMapper {
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Product map(ProductTO from);
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}

‎plugins/maven/example-client/src/main/java/io/github/kobylynskyi/order/external/ProductServiceGraphQLClient.java‎

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package io.github.kobylynskyi.order.external;
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import com.kobylynskyi.graphql.codegen.model.graphql.GraphQLRequest;
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import com.kobylynskyi.graphql.codegen.model.graphql.GraphQLResult;
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import io.github.kobylynskyi.order.model.Product;
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import io.github.kobylynskyi.order.model.UnableToRetrieveProductException;
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import io.github.kobylynskyi.product.graphql.model.ProductByIdQueryRequest;
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import io.github.kobylynskyi.product.graphql.model.ProductResponseProjection;
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import io.github.kobylynskyi.product.graphql.model.ProductTO;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.beans.factory.annotation.Value;
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import org.springframework.core.ParameterizedTypeReference;
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import org.springframework.http.HttpEntity;
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import org.springframework.http.HttpHeaders;
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import org.springframework.http.HttpMethod;
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import org.springframework.http.MediaType;
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import org.springframework.stereotype.Service;
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import org.springframework.web.client.RestTemplate;
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import java.net.URI;
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import java.util.Collections;
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import java.util.Map;
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@Service
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public class ProductServiceGraphQLClient {
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@Autowired
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private ExternalProductMapper productMapper;
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@Autowired
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private RestTemplate restTemplate;
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@Value("${external.service.product.url}")
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private String productUrl;
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public Product getProduct(String productId) throws UnableToRetrieveProductException {
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ProductByIdQueryRequest getProductRequest = new ProductByIdQueryRequest();
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getProductRequest.setId(productId);
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GraphQLRequest request = new GraphQLRequest(getProductRequest,
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new ProductResponseProjection()
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.id()
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.title()
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.price());
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GraphQLResult<Map<String, ProductTO>> result = restTemplate.exchange(URI.create(productUrl),
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HttpMethod.POST,
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httpEntity(request),
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new ParameterizedTypeReference<GraphQLResult<Map<String, ProductTO>>>() {
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}).getBody();
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assert result != null;
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if (result.hasErrors()) {
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throw new UnableToRetrieveProductException(productId, result.getErrors().get(0).getMessage());
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}
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return productMapper.map(result.getData().get(getProductRequest.getOperationName()));
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}
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private static HttpEntity<String> httpEntity(Object request) {
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HttpHeaders headers = new HttpHeaders();
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headers.setAccept(Collections.singletonList(MediaType.APPLICATION_JSON_UTF8));
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headers.setContentType(MediaType.APPLICATION_JSON_UTF8);
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return new HttpEntity<>(request.toString(), headers);
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}
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}

‎plugins/maven/example-client/src/main/java/io/github/kobylynskyi/order/external/config/RestClientsConfiguration.java‎

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package io.github.kobylynskyi.order.external.config;
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import org.springframework.context.annotation.Bean;
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import org.springframework.context.annotation.Configuration;
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import org.springframework.http.client.HttpComponentsClientHttpRequestFactory;
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import org.springframework.web.client.RestTemplate;
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@Configuration
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public class RestClientsConfiguration {
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@Bean
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public RestTemplate restTemplate() {
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return new RestTemplate(new HttpComponentsClientHttpRequestFactory());
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}
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}

plugins/maven/example/src/main/java/io/github/kobylynskyi/bikeshop/graphql/GraphQLController.java renamed to plugins/maven/example-client/src/main/java/io/github/kobylynskyi/order/graphql/GraphQLController.java

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package io.github.kobylynskyi.bikeshop.graphql;
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package io.github.kobylynskyi.order.graphql;
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import com.fasterxml.jackson.databind.ObjectMapper;
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import graphql.ExecutionInput;

plugins/maven/example/src/main/java/io/github/kobylynskyi/bikeshop/graphql/config/GraphQLConfiguration.java renamed to plugins/maven/example-client/src/main/java/io/github/kobylynskyi/order/graphql/config/GraphQLConfiguration.java

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package io.github.kobylynskyi.bikeshop.graphql.config;
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package io.github.kobylynskyi.order.graphql.config;
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import graphql.GraphQL;
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import graphql.execution.AsyncExecutionStrategy;

‎plugins/maven/example-client/src/main/java/io/github/kobylynskyi/order/graphql/mappers/OrderMapper.java‎

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package io.github.kobylynskyi.order.graphql.mappers;
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import io.github.kobylynskyi.order.graphql.model.ItemTO;
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import io.github.kobylynskyi.order.graphql.model.OrderTO;
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import io.github.kobylynskyi.order.model.Item;
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import io.github.kobylynskyi.order.model.Order;
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import org.mapstruct.Mapper;
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import org.mapstruct.Mapping;
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@Mapper(componentModel = "spring")
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public interface OrderMapper {
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OrderTO map(Order from);
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ItemTO map(Item from);
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}

‎plugins/maven/example-client/src/main/java/io/github/kobylynskyi/order/graphql/resolvers/MutationsResolver.java‎

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package io.github.kobylynskyi.order.graphql.resolvers;
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import com.coxautodev.graphql.tools.GraphQLMutationResolver;
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import io.github.kobylynskyi.order.graphql.api.Mutation;
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import io.github.kobylynskyi.order.graphql.mappers.OrderMapper;
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import io.github.kobylynskyi.order.graphql.model.OrderTO;
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import io.github.kobylynskyi.order.service.OrderService;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.stereotype.Component;
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@Component
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public class MutationsResolver implements Mutation, GraphQLMutationResolver {
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@Autowired
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private OrderService service;
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@Autowired
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private OrderMapper mapper;
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@Override
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public OrderTO create() {
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return mapper.map(service.create());
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}
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@Override
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public OrderTO addProductToOrder(String orderId, String productId, Integer quantity) throws Exception {
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return mapper.map(service.addProduct(orderId, productId, quantity));
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}
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}

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