PT 173730396 - Initial implementation of generations validation

Includes parsing of spring boot projects from spring.io/api, as well as
spring boot project generations from sample code, and relevant junits.

headless-services/spring-boot-language-server/src/main/java/org/springframework/ide/vscode/boot/validation/generations/SpringProjectIndex.java

@@ -0,0 +1,66 @@
+/*******************************************************************************
+ * Copyright (c) 2020 Pivotal, Inc.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * https://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *     Pivotal, Inc. - initial API and implementation
+ *******************************************************************************/
+package org.springframework.ide.vscode.boot.validation.generations;
+
+import java.util.List;
+
+import org.springframework.ide.vscode.boot.validation.generations.json.Generations;
+import org.springframework.ide.vscode.boot.validation.generations.json.Link;
+import org.springframework.ide.vscode.boot.validation.generations.json.Links;
+import org.springframework.ide.vscode.boot.validation.generations.json.SpringProject;
+import org.springframework.ide.vscode.boot.validation.generations.json.SpringProjects;
+
+public class SpringProjectIndex {
+
+	private final SpringProjectsClient client;
+
+	public SpringProjectIndex(SpringProjectsClient client) {
+		this.client = client;
+	}
+
+	public SpringProjects getProjects() throws Exception {
+		return client.getSpringProjects();
+	}
+
+	public Generations getGenerations(SpringProject project) throws Exception {
+		if (project != null) {
+			Links _links = project.get_links();
+			if (_links != null) {
+				Link genLink = _links.getGenerations();
+				if (genLink != null) {
+					return client.getGenerations(genLink.getHref());
+				}
+			}
+		}
+		return null;
+	}
+
+	/**
+	 * 
+	 * @param projectSlug slug used by Spring projects metadata, for example
+	 *                    "spring-boot" for Spring Boot projects
+	 * @return
+	 * @throws Exception
+	 */
+	public SpringProject getProject(String projectSlug) throws Exception {
+		SpringProjects springProjects = getProjects();
+		List<SpringProject> projects = springProjects.getProjects();
+		SpringProject prj = null;
+		for (SpringProject project : projects) {
+			if (project.getSlug().equals(projectSlug)) {
+				prj = project;
+				break;
+			}
+		}
+		return prj;
+	}
+
+}

headless-services/spring-boot-language-server/src/main/java/org/springframework/ide/vscode/boot/validation/generations/SpringProjectsClient.java

@@ -0,0 +1,65 @@
+/*******************************************************************************
+ * Copyright (c) 2020 Pivotal, Inc.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * https://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *     Pivotal, Inc. - initial API and implementation
+ *******************************************************************************/
+package org.springframework.ide.vscode.boot.validation.generations;
+
+import org.springframework.http.HttpEntity;
+import org.springframework.http.HttpHeaders;
+import org.springframework.http.HttpMethod;
+import org.springframework.http.MediaType;
+import org.springframework.http.ResponseEntity;
+import org.springframework.ide.vscode.boot.validation.generations.json.Generations;
+import org.springframework.ide.vscode.boot.validation.generations.json.GenerationsEmbedded;
+import org.springframework.ide.vscode.boot.validation.generations.json.JsonHalEmbedded;
+import org.springframework.ide.vscode.boot.validation.generations.json.SpringProjects;
+import org.springframework.ide.vscode.boot.validation.generations.json.SpringProjectsEmbedded;
+import org.springframework.web.client.RestTemplate;
+
+public class SpringProjectsClient {
+
+	private final String url;
+
+	public SpringProjectsClient(String url) {
+		this.url = url;
+	}
+
+	public SpringProjects getSpringProjects() throws Exception {
+		return getEmbedded(url, SpringProjectsEmbedded.class);
+	}
+
+	public Generations getGenerations(String generationsUrl) throws Exception {
+		return getEmbedded(generationsUrl, GenerationsEmbedded.class);
+	}
+
+	private <T> T getEmbedded(String url, Class<? extends JsonHalEmbedded<T>> clazz) throws Exception {
+		if (url != null) {
+			JsonHalEmbedded<T> embedded = get(url, clazz);
+			if (embedded != null) {
+				return embedded.get_embedded();
+			}
+		}
+		return null;
+	}
+
+	private <T> T get(String url, Class<T> clazz) throws Exception {
+		HttpHeaders headers = new HttpHeaders();
+
+		headers.setAccept(MediaType.parseMediaTypes("application/hal+json"));
+
+		@SuppressWarnings({ "rawtypes", "unchecked" })
+		HttpEntity<?> entity = new HttpEntity(headers);
+
+		RestTemplate restTemplate = new RestTemplate();
+		ResponseEntity<T> response = restTemplate.exchange(url, HttpMethod.GET, entity, clazz);
+
+		return response.getBody();
+	}
+
+}

headless-services/spring-boot-language-server/src/main/java/org/springframework/ide/vscode/boot/validation/generations/json/Generation.java

@@ -0,0 +1,52 @@
+/*******************************************************************************
+ * Copyright (c) 2020 Pivotal, Inc.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * https://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *     Pivotal, Inc. - initial API and implementation
+ *******************************************************************************/
+package org.springframework.ide.vscode.boot.validation.generations.json;
+
+public class Generation extends JsonHalLinks {
+
+	private String name;
+	private String ossSupportEndDate;
+	private String commercialSupportEndDate;
+	private String initialReleaseDate;
+
+	public String getName() {
+		return name;
+	}
+
+	public void setName(String name) {
+		this.name = name;
+	}
+
+	public String getOssSupportEndDate() {
+		return ossSupportEndDate;
+	}
+
+	public void setOssSupportEndDate(String ossSupportEndDate) {
+		this.ossSupportEndDate = ossSupportEndDate;
+	}
+
+	public String getCommercialSupportEndDate() {
+		return commercialSupportEndDate;
+	}
+
+	public void setCommercialSupportEndDate(String commercialSupportEndDate) {
+		this.commercialSupportEndDate = commercialSupportEndDate;
+	}
+
+	public String getInitialReleaseDate() {
+		return initialReleaseDate;
+	}
+
+	public void setInitialReleaseDate(String initialReleaseDate) {
+		this.initialReleaseDate = initialReleaseDate;
+	}
+
+}

headless-services/spring-boot-language-server/src/main/java/org/springframework/ide/vscode/boot/validation/generations/json/Generations.java

@@ -0,0 +1,26 @@
+/*******************************************************************************
+ * Copyright (c) 2020 Pivotal, Inc.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * https://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *     Pivotal, Inc. - initial API and implementation
+ *******************************************************************************/
+package org.springframework.ide.vscode.boot.validation.generations.json;
+
+import java.util.List;
+
+public class Generations {
+	
+	private List<Generation> generations;
+
+	public List<Generation> getGenerations() {
+		return generations;
+	}
+
+	public void setGenerations(List<Generation> generations) {
+		this.generations = generations;
+	}
+}

headless-services/spring-boot-language-server/src/main/java/org/springframework/ide/vscode/boot/validation/generations/json/GenerationsEmbedded.java

@@ -0,0 +1,25 @@
+/*******************************************************************************
+ * Copyright (c) 2020 Pivotal, Inc.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * https://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *     Pivotal, Inc. - initial API and implementation
+ *******************************************************************************/
+package org.springframework.ide.vscode.boot.validation.generations.json;
+
+public class GenerationsEmbedded extends JsonHalLinks implements JsonHalEmbedded<Generations> {
+
+	
+	private Generations _embedded;
+
+	public Generations get_embedded() {
+		return _embedded;
+	}
+
+	public void set_embedded(Generations _embedded) {
+		this._embedded = _embedded;
+	}
+}

headless-services/spring-boot-language-server/src/main/java/org/springframework/ide/vscode/boot/validation/generations/json/JsonHalEmbedded.java

@@ -0,0 +1,18 @@
+/*******************************************************************************
+ * Copyright (c) 2020 Pivotal, Inc.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * https://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *     Pivotal, Inc. - initial API and implementation
+ *******************************************************************************/
+package org.springframework.ide.vscode.boot.validation.generations.json;
+
+public interface JsonHalEmbedded<T> {
+
+	T get_embedded();
+
+	void set_embedded(T _embedded);
+}

headless-services/spring-boot-language-server/src/main/java/org/springframework/ide/vscode/boot/validation/generations/json/JsonHalLinks.java

@@ -0,0 +1,24 @@
+/*******************************************************************************
+ * Copyright (c) 2020 Pivotal, Inc.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * https://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *     Pivotal, Inc. - initial API and implementation
+ *******************************************************************************/
+package org.springframework.ide.vscode.boot.validation.generations.json;
+
+public class JsonHalLinks {
+
+	private Links _links;
+
+	public Links get_links() {
+		return _links;
+	}
+
+	public void set_links(Links _links) {
+		this._links = _links;
+	}
+}

headless-services/spring-boot-language-server/src/main/java/org/springframework/ide/vscode/boot/validation/generations/json/JsonHalParser.java

@@ -0,0 +1,25 @@
+/*******************************************************************************
+ * Copyright (c) 2020 Pivotal, Inc.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * https://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *     Pivotal, Inc. - initial API and implementation
+ *******************************************************************************/
+package org.springframework.ide.vscode.boot.validation.generations.json;
+
+import com.google.gson.Gson;
+
+public class JsonHalParser {
+
+	public <T> T getEmbedded(String json, Class<? extends JsonHalEmbedded<T>> clazz) throws Exception {
+		if (json != null) {
+			Gson gson = new  Gson();
+			JsonHalEmbedded<T> embedded = gson.fromJson(json, clazz);
+			return embedded.get_embedded();
+		}
+		return null;
+	}
+}

headless-services/spring-boot-language-server/src/main/java/org/springframework/ide/vscode/boot/validation/generations/json/Link.java

@@ -0,0 +1,24 @@
+/*******************************************************************************
+ * Copyright (c) 2020 Pivotal, Inc.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * https://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *     Pivotal, Inc. - initial API and implementation
+ *******************************************************************************/
+package org.springframework.ide.vscode.boot.validation.generations.json;
+
+public class Link {
+
+	private String href;
+
+	public void setHref(String href) {
+		this.href = href;
+	}
+
+	public String getHref() {
+		return this.href;
+	}
+}

headless-services/spring-boot-language-server/src/main/java/org/springframework/ide/vscode/boot/validation/generations/json/Links.java

@@ -0,0 +1,60 @@
+/*******************************************************************************
+ * Copyright (c) 2020 Pivotal, Inc.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * https://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *     Pivotal, Inc. - initial API and implementation
+ *******************************************************************************/
+package org.springframework.ide.vscode.boot.validation.generations.json;
+
+public class Links {
+
+	private Link self;
+	private Link releases;
+	private Link generations;
+	private Link parent;
+	private Link project;
+
+	public Link getSelf() {
+		return self;
+	}
+
+	public void setSelf(Link self) {
+		this.self = self;
+	}
+
+	public Link getReleases() {
+		return releases;
+	}
+
+	public void setReleases(Link releases) {
+		this.releases = releases;
+	}
+
+	public Link getGenerations() {
+		return generations;
+	}
+
+	public void setGenerations(Link generations) {
+		this.generations = generations;
+	}
+
+	public Link getParent() {
+		return parent;
+	}
+
+	public void setParent(Link parent) {
+		this.parent = parent;
+	}
+
+	public Link getProject() {
+		return project;
+	}
+
+	public void setProject(Link project) {
+		this.project = project;
+	}
+}

headless-services/spring-boot-language-server/src/main/java/org/springframework/ide/vscode/boot/validation/generations/json/SpringProject.java

@@ -0,0 +1,51 @@
+/*******************************************************************************
+ * Copyright (c) 2020 Pivotal, Inc.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * https://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *     Pivotal, Inc. - initial API and implementation
+ *******************************************************************************/
+package org.springframework.ide.vscode.boot.validation.generations.json;
+
+public class SpringProject extends JsonHalLinks {
+
+	private String name;
+	private String slug;
+	private String status;
+	private String repositoryUrl;
+	
+	public String getName() {
+		return name;
+	}
+
+	public void setName(String name) {
+		this.name = name;
+	}
+
+	public String getSlug() {
+		return slug;
+	}
+
+	public void setSlug(String slug) {
+		this.slug = slug;
+	}
+
+	public String getStatus() {
+		return status;
+	}
+
+	public void setStatus(String status) {
+		this.status = status;
+	}
+
+	public String getRepositoryUrl() {
+		return repositoryUrl;
+	}
+
+	public void setRepositoryUrl(String repositoryUrl) {
+		this.repositoryUrl = repositoryUrl;
+	}
+}

headless-services/spring-boot-language-server/src/main/java/org/springframework/ide/vscode/boot/validation/generations/json/SpringProjects.java

@@ -0,0 +1,25 @@
+/*******************************************************************************
+ * Copyright (c) 2020 Pivotal, Inc.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * https://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *     Pivotal, Inc. - initial API and implementation
+ *******************************************************************************/
+package org.springframework.ide.vscode.boot.validation.generations.json;
+
+import java.util.List;
+
+public class SpringProjects {
+	private List<SpringProject> projects;
+
+	public List<SpringProject> getProjects() {
+		return projects;
+	}
+
+	public void setProjects(List<SpringProject> projects) {
+		this.projects = projects;
+	}
+}

headless-services/spring-boot-language-server/src/main/java/org/springframework/ide/vscode/boot/validation/generations/json/SpringProjectsEmbedded.java

@@ -0,0 +1,24 @@
+/*******************************************************************************
+ * Copyright (c) 2020 Pivotal, Inc.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * https://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *     Pivotal, Inc. - initial API and implementation
+ *******************************************************************************/
+package org.springframework.ide.vscode.boot.validation.generations.json;
+
+public class SpringProjectsEmbedded extends JsonHalLinks implements JsonHalEmbedded<SpringProjects> {
+
+	private SpringProjects _embedded;
+
+	public SpringProjects get_embedded() {
+		return _embedded;
+	}
+
+	public void set_embedded(SpringProjects _embedded) {
+		this._embedded = _embedded;
+	}
+}