Refactorization and add metrics system.

src/main/java/org/codiki/account/AccountController.java

@@ -46,8 +46,16 @@ public class AccountController {
 
 	@JsonView(View.UserDTO.class)
 	@PostMapping("/login")
-	public User login(@RequestBody final User pUser) throws BadCredentialsException {
-		return accountService.authenticate(pUser);
+	public User login(@RequestBody final User pUser, HttpServletResponse pResponse) throws BadCredentialsException {
+		User result = null;
+
+		try {
+			result = accountService.authenticate(pUser);
+		} catch(BadCredentialsException ex) {
+			pResponse.setStatus(HttpServletResponse.SC_UNAUTHORIZED);
+		}
+
+		return result;
 	}
 	
 	@GetMapping("/logout")

src/main/java/org/codiki/core/config/CoreConfig.java

@@ -0,0 +1,14 @@
+package org.codiki.core.config;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+import java.time.Clock;
+
+@Configuration
+public class CoreConfig {
+    @Bean
+    public Clock clock() {
+        return Clock.systemDefaultZone();
+    }
+}

src/main/java/org/codiki/core/entities/dto/Metrics.java

@@ -0,0 +1,37 @@
+package org.codiki.core.entities.dto;
+
+import java.time.LocalDate;
+import java.time.LocalDateTime;
+
+public class Metrics {
+    /** Rest API version number. */
+    private String version;
+    /** Application start date. */
+    private LocalDateTime uptime;
+    /** Platform name. */
+    private String platform;
+
+    public String getVersion() {
+        return version;
+    }
+
+    public void setVersion(String version) {
+        this.version = version;
+    }
+
+    public LocalDateTime getUptime() {
+        return uptime;
+    }
+
+    public void setUptime(LocalDateTime uptime) {
+        this.uptime = uptime;
+    }
+
+    public String getPlatform() {
+        return platform;
+    }
+
+    public void setPlatform(String platform) {
+        this.platform = platform;
+    }
+}

src/main/java/org/codiki/metrics/MetricsController.java

@@ -0,0 +1,26 @@
+package org.codiki.metrics;
+
+import org.codiki.core.entities.dto.Metrics;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+@RestController
+@RequestMapping("/api/metrics")
+public class MetricsController {
+
+    private MetricsService metricsService;
+
+    /**
+     * Constructor.
+     * @param metricsService Metrics service.
+     */
+    public MetricsController(MetricsService metricsService) {
+        this.metricsService = metricsService;
+    }
+
+    @GetMapping("/healthCheck")
+    public Metrics healthCheck() {
+        return metricsService.getMetrics();
+    }
+}

src/main/java/org/codiki/metrics/MetricsService.java

@@ -0,0 +1,44 @@
+package org.codiki.metrics;
+
+import org.codiki.core.entities.dto.Metrics;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.stereotype.Service;
+
+import java.time.Clock;
+import java.time.LocalDateTime;
+
+@Service
+public class MetricsService {
+    /** Application start date. */
+    private LocalDateTime uptime;
+    /** Application version number. */
+    private String appVersion;
+    /** Platform name. */
+    private String appPlatform;
+
+    /**
+     * Constructor.
+     * @param clock System clock.
+     */
+    public MetricsService(Clock clock,
+                          @Value("${app.version}") String appVersion,
+                          @Value("${app.platform}") String appPlatform) {
+        uptime = LocalDateTime.now(clock);
+        this.appVersion = appVersion;
+        this.appPlatform = appPlatform;
+    }
+
+    /**
+     * Returns application metrics like uptime, version number or platform name and others.
+     * @return Application metrics.
+     */
+    public Metrics getMetrics() {
+        Metrics metrics = new Metrics();
+
+        metrics.setUptime(uptime);
+        metrics.setVersion(appVersion);
+        metrics.setPlatform(appPlatform);
+
+        return metrics;
+    }
+}

src/main/java/org/codiki/posts/PostController.java

@@ -18,6 +18,7 @@ import org.codiki.core.entities.persistence.User;
 import org.codiki.core.repositories.PostRepository;
 import org.codiki.core.services.ParserService;
 import org.codiki.core.services.UserService;
+import org.codiki.core.utils.StringUtils;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.data.domain.PageRequest;
 import org.springframework.web.bind.annotation.DeleteMapping;
@@ -36,23 +37,37 @@ import com.fasterxml.jackson.annotation.JsonView;
 public class PostController {
 
 	private static final int LIMIT_POSTS_HOME = 20;
-	
-	@Autowired
+	/** Service to parse post content. */
 	private ParserService parserService;
-	
-	@Autowired
+	/** Posts repository. */
 	private PostRepository postRepository;
-	
-	@Autowired
+	/** Posts business service. */
 	private PostService postService;
-	
-	@Autowired
+	/** Users business service. */
 	private UserService userService;
-	
+
+	/**
+	 * Constructor.
+	 * @param parserService Service to parse post content.
+	 * @param postRepository Posts repository.
+	 * @param postService Posts business service.
+	 * @param userService Users business service.
+	 */
+	public PostController(ParserService parserService,
+						  PostRepository postRepository,
+						  PostService postService,
+						  UserService userService) {
+		this.parserService = parserService;
+		this.postRepository = postRepository;
+		this.postService = postService;
+		this.userService = userService;
+	}
+
 	@GetMapping
 	public List<PostDTO> getAll() {
 		return StreamSupport.stream(postRepository.findAll().spliterator(), false)
-				.map(PostDTO::new).collect(Collectors.toList());
+				.map(PostDTO::new)
+				.collect(Collectors.toList());
 	}
 
 	@JsonView(View.PostDTO.class)
@@ -70,16 +85,11 @@ public class PostController {
 	@GetMapping("/{postKey}/source")
 	public Post getByKeyAndSource(@PathVariable("postKey")final String pPostKey,
 			final HttpServletResponse response) {
-		Post result = null;
-		
-		final Optional<Post> post = postRepository.getByKey(pPostKey);
-		if(post.isPresent()) {
-			result = post.get();
-		} else {
-			response.setStatus(HttpServletResponse.SC_NOT_FOUND);
-		}
-		
-		return result;
+		return postRepository.getByKey(pPostKey)
+				.orElseGet(() -> {
+					response.setStatus(HttpServletResponse.SC_NOT_FOUND);
+					return null;
+				});
 	}
 
 	@JsonView(View.PostDTO.class)
@@ -121,9 +131,10 @@ public class PostController {
 	@JsonView(View.PostDTO.class)
 	@PostMapping("/preview")
 	public Post preview(@RequestBody final Post pPost) {
-		pPost.setImage(pPost.getImage() == null || "".equals(pPost.getImage())
+		pPost.setImage(StringUtils.isNull(pPost.getImage())
 				? "https://news-cdn.softpedia.com/images/news2/this-is-the-default-wallpaper-of-the-gnome-3-20-desktop-environment-500743-2.jpg"
 				: pPost.getImage());
+
 		pPost.setText(parserService.parse(pPost.getText()));
 		
 		return pPost;
@@ -133,15 +144,7 @@ public class PostController {
 	@PostMapping("/")
 	public Post insert(@RequestBody final PostDTO pPost, final HttpServletRequest pRequest,
 			final HttpServletResponse pResponse, final Principal pPrincipal) {
-		Post result = null;
-		
-		Optional<Post> postCreated = postService.insert(pPost, pRequest, pResponse, pPrincipal);
-		
-		if(postCreated.isPresent()) {
-			result = postCreated.get();
-		}
-		
-		return result;
+		return postService.insert(pPost, pRequest, pResponse, pPrincipal).orElse(null);
 	}
 	
 	@PutMapping("/")

src/main/resources/application.yml

@@ -1,6 +1,8 @@
 app:
   name: Codiki
   description: A wiki application.
+  version: 1.2.0
+  platform: develop
 
 codiki:
   files:

src/main/ts/src/app/app.module.ts

@@ -36,6 +36,7 @@ import { ForbiddenComponent } from './forbidden/forbidden.component';
 import { SearchComponent } from './search/search.component';
 import { SigninComponent } from './signin/signin.component';
 import { VersionRevisionComponent } from './version-revisions/version-revisions.component';
+import { HealthCheckComponent } from './health-check/health-check.component';
 
 // Reusable components
 import { PostCardComponent } from './core/post-card/post-card.component';
@@ -57,6 +58,7 @@ import { CreateUpdatePostService } from './posts/create-update/create-update-pos
 import { SearchService } from './search/search.service';
 import { SigninService } from './signin/signin.service';
 import { VersionRevisionService } from './version-revisions/version-revisions.service';
+import { HealthCheckService } from './health-check/health-check.service';
 
 @NgModule({
 	declarations: [
@@ -81,7 +83,8 @@ import { VersionRevisionService } from './version-revisions/version-revisions.se
 		SearchComponent,
 		SearchBarComponent,
 		ProgressBarComponent,
-		ForbiddenComponent
+		ForbiddenComponent,
+		HealthCheckComponent
 	],
 	imports: [
 		BrowserModule,
@@ -110,6 +113,7 @@ import { VersionRevisionService } from './version-revisions/version-revisions.se
 		CreateUpdatePostService,
 		VersionRevisionService,
 		SearchService,
+		HealthCheckService,
 		{ provide: HTTP_INTERCEPTORS, useClass: UnauthorizedInterceptor, multi: true }
 	],
 	bootstrap: [AppComponent]

src/main/ts/src/app/app.routing.ts

@@ -14,6 +14,7 @@ import { PostComponent } from './posts/post.component';
 import { ByCategoryComponent } from './posts/byCategory/by-category.component';
 import { CreateUpdatePostComponent } from './posts/create-update/create-update-post.component';
 import { VersionRevisionComponent } from './version-revisions/version-revisions.component';
+import { HealthCheckComponent } from './health-check/health-check.component';
 import { SearchComponent } from './search/search.component';
 
 export const appRoutes: Routes = [
@@ -31,6 +32,7 @@ export const appRoutes: Routes = [
 	{ path: 'changePassword', component: ChangePasswordComponent, canActivate: [AuthGuard] },
 	{ path: 'profilEdit', component: ProfilEditionComponent, canActivate: [AuthGuard] },
 	{ path: 'versionrevisions', component: VersionRevisionComponent },
+	{ path: 'healthCheck', component: HealthCheckComponent },
 	{ path: '', redirectTo: '/home', pathMatch: 'full' },
 	{ path: '**', redirectTo: '/home' }
 ];

src/main/ts/src/app/core/entities.ts

@@ -73,3 +73,11 @@ export class VersionRevision {
 		public bugfix: boolean
 	) { }
 }
+
+export class Metrics {
+	constructor(
+		public version: String,
+		public uptime: Date,
+		public platform: String
+	) { }
+}

src/main/ts/src/app/footer/footer.component.html

@@ -7,6 +7,13 @@
 				<i id="appVersion" routerLink="/versionrevisions" mdbTooltip="Notes de versions" placement="top" mdbRippleRadius>
 					{{appVersion}}
 				</i>
+				<i id="healthCheck"
+						class="fa fa-heartbeat"
+						routerLink="/healthCheck"
+						mdbTooltip="Ligne de vie"
+						placement="top"
+						mdbRippleRadius>
+				</i>
 			</span>
 			<span class="float-right">
 				<a target="_blank" href="./assets/doc/codiki_user_manual.pdf" mdbTooltip="Manuel d'utilisation" placement="top" mdbRippleRadius>

src/main/ts/src/app/footer/footer.component.scss

@@ -23,3 +23,8 @@ span.anticopy {
 	display: inline;
 	cursor: pointer;
 }
+
+#healthCheck {
+	margin-left: 10px;
+	cursor: pointer;
+}

src/main/ts/src/app/health-check/health-check.component.html

@@ -0,0 +1,23 @@
+<div class="col-md-8 offset-md-2 col-lg-6 offset-lg-3">
+	<mdb-card>
+		<!--Card content-->
+		<mdb-card-body>
+			<!--Title-->
+			<mdb-card-title>
+				<h4>Status du serveur</h4>
+			</mdb-card-title>
+
+			<ul class="list-group list-group-flush">
+				<li class="list-group-item">
+					Plateforme <mdb-badge pill="true" primary="true" class="float-right">{{metrics.platform}}</mdb-badge>
+				</li>
+				<li class="list-group-item">
+					Version <mdb-badge pill="true" primary="true" class="float-right">{{metrics.version}}</mdb-badge>
+				</li>
+				<li class="list-group-item">
+					Démarré depuis {{metrics.uptime}}
+				</li>
+			</ul>
+		</mdb-card-body>
+	</mdb-card>
+</div>

src/main/ts/src/app/health-check/health-check.component.ts

@@ -0,0 +1,23 @@
+import { HealthCheckService } from './health-check.service';
+import { Component, OnInit } from '@angular/core';
+import { Metrics } from '../core/entities';
+
+@Component({
+	selector: 'app-health-check',
+	templateUrl: './health-check.component.html',
+	styleUrls: ['./health-check.component.scss']
+})
+export class HealthCheckComponent implements OnInit {
+	metrics: Metrics = new Metrics('1.0.0', null, '?');
+
+	constructor(
+		private healthCheckService: HealthCheckService
+	) {}
+
+	ngOnInit() {
+		this.healthCheckService.healthCheck().subscribe(metrics => {
+			this.metrics = metrics;
+		});
+	}
+
+}

src/main/ts/src/app/health-check/health-check.service.ts

@@ -0,0 +1,16 @@
+import { Injectable } from '@angular/core';
+import { HttpClient } from '@angular/common/http';
+import { Observable } from 'rxjs';
+import { Metrics } from '../core/entities';
+
+@Injectable({
+	providedIn: 'root'
+})
+export class HealthCheckService {
+
+	constructor(private http: HttpClient) {}
+
+	healthCheck(): Observable<Metrics> {
+		return this.http.get<Metrics>('/api/metrics/healthCheck');
+	}
+}

src/main/ts/src/app/home/home.service.ts

@@ -1,5 +1,5 @@
 import { Injectable } from '@angular/core';
-import { HttpClient, HttpHeaders } from '@angular/common/http';
+import { HttpClient } from '@angular/common/http';
 import { Observable } from 'rxjs';
 import { Post } from '../core/entities';