creating swagger documentation

Change-Id: I8ca3faf2e6afb7add2785add2ac9096ded98f591
Issue-ID: DCAEGEN2-468
Signed-off-by: micdzied <michal.1.dziedzic@nokia.com>

4 files changed, 107 insertions, 12 deletions

diff --git a/prh-app-server/pom.xml b/prh-app-server/pom.xml
index cb85db11..668b729a 100644
--- a/prh-app-server/pom.xml
+++ b/prh-app-server/pom.xml
@@ -108,22 +108,10 @@
     <dependency>
       <groupId>org.springframework.boot</groupId>
       <artifactId>spring-boot-starter-web</artifactId>
-      <exclusions>
-        <exclusion>
-          <groupId>org.springframework.boot</groupId>
-          <artifactId>spring-boot-starter-json</artifactId>
-        </exclusion>
-      </exclusions>
     </dependency>
     <dependency>
       <groupId>org.springframework.boot</groupId>
       <artifactId>spring-boot-starter-webflux</artifactId>
-      <exclusions>
-        <exclusion>
-          <groupId>org.springframework.boot</groupId>
-          <artifactId>spring-boot-starter-json</artifactId>
-        </exclusion>
-      </exclusions>
     </dependency>
     <dependency>
       <groupId>com.spotify</groupId>
@@ -237,6 +225,15 @@
           <artifactId>prh-aai-client</artifactId>
           <version>1.0.0-SNAPSHOT</version>
       </dependency>
+    <!--REQUIRED TO GENERATE DOCUMENTATION -->
+    <dependency>
+      <groupId>io.springfox</groupId>
+      <artifactId>springfox-swagger2</artifactId>
+    </dependency>
+    <dependency>
+      <groupId>io.springfox</groupId>
+      <artifactId>springfox-swagger-ui</artifactId>
+    </dependency>
 
   </dependencies>
   <dependencyManagement>
diff --git a/prh-app-server/src/main/java/org/onap/dcaegen2/services/prh/configuration/SwaggerConfig.java b/prh-app-server/src/main/java/org/onap/dcaegen2/services/prh/configuration/SwaggerConfig.java
new file mode 100644
index 00000000..ffa6b465
--- /dev/null
+++ b/prh-app-server/src/main/java/org/onap/dcaegen2/services/prh/configuration/SwaggerConfig.java
@@ -0,0 +1,77 @@
+/*
+ * ============LICENSE_START=======================================================
+ * PNF-REGISTRATION-HANDLER
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA Intellectual Property. All rights reserved.
+ * ================================================================================
+ * Licensed 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.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcaegen2.services.prh.configuration;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Profile;
+import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
+import org.springframework.web.servlet.config.annotation.WebMvcConfigurationSupport;
+import springfox.documentation.builders.ApiInfoBuilder;
+import springfox.documentation.builders.PathSelectors;
+import springfox.documentation.builders.RequestHandlerSelectors;
+import springfox.documentation.service.ApiInfo;
+import springfox.documentation.spi.DocumentationType;
+import springfox.documentation.spring.web.plugins.Docket;
+import springfox.documentation.swagger2.annotations.EnableSwagger2;
+
+
+@EnableSwagger2
+@Configuration
+@Profile("prod")
+public class SwaggerConfig extends WebMvcConfigurationSupport {
+
+  public static final String PACKAGE_PATH = "org.onap.dcaegen2.services.prh";
+  public static final String API_TITLE = "PRH app server";
+  public static final String DESCRIPTION = "This page lists all the rest apis for PRH app server.";
+  public static final String VERSION = "1.0";
+  public static final String RESOURCES_PATH = "classpath:/META-INF/resources/";
+  public static final String WEBJARS_PATH = RESOURCES_PATH + "webjars/";
+  public static final String SWAGGER_UI = "swagger-ui.html";
+  public static final String WEBJARS = "/webjars/**";
+
+  @Bean
+  public Docket api() {
+    return new Docket(DocumentationType.SWAGGER_2)
+        .apiInfo(apiInfo())
+        .select()
+        .apis(RequestHandlerSelectors.basePackage(PACKAGE_PATH))
+        .paths(PathSelectors.any())
+        .build();
+  }
+
+  private ApiInfo apiInfo() {
+    return new ApiInfoBuilder()
+        .title(API_TITLE)
+        .description(DESCRIPTION)
+        .version(VERSION)
+        .build();
+  }
+
+
+  @Override
+  protected void addResourceHandlers(ResourceHandlerRegistry registry) {
+    registry.addResourceHandler(SWAGGER_UI)
+        .addResourceLocations(RESOURCES_PATH);
+
+    registry.addResourceHandler(WEBJARS)
+        .addResourceLocations(WEBJARS_PATH);
+  }
+}
\ No newline at end of file
diff --git a/prh-app-server/src/main/java/org/onap/dcaegen2/services/prh/controllers/HeartbeatController.java b/prh-app-server/src/main/java/org/onap/dcaegen2/services/prh/controllers/HeartbeatController.java
index b91b56c5..05b91840 100644
--- a/prh-app-server/src/main/java/org/onap/dcaegen2/services/prh/controllers/HeartbeatController.java
+++ b/prh-app-server/src/main/java/org/onap/dcaegen2/services/prh/controllers/HeartbeatController.java
@@ -19,6 +19,10 @@
  */
 package org.onap.dcaegen2.services.prh.controllers;
 
+import io.swagger.annotations.Api;
+import io.swagger.annotations.ApiOperation;
+import io.swagger.annotations.ApiResponse;
+import io.swagger.annotations.ApiResponses;
 import java.time.LocalDateTime;
 import java.time.format.DateTimeFormatter;
 
@@ -36,12 +40,21 @@ import reactor.core.publisher.Mono;
  * @author <a href="mailto:przemyslaw.wasala@nokia.com">Przemysław Wąsala</a> on 4/19/18
  */
 @RestController
+@Api(value = "HeartbeatController", description = "Check liveness of PRH service")
 public class HeartbeatController {
 
     private static final Logger logger = LoggerFactory.getLogger(PrhAppConfig.class);
     private static final DateTimeFormatter dateTimeFormatter = DateTimeFormatter.ofPattern("HH:mm:ss");
 
     @RequestMapping(value = "heartbeat", method = RequestMethod.GET)
+    @ApiOperation(value = "Returns liveness of PRH service")
+    @ApiResponses(value = {
+        @ApiResponse(code = 200, message = "PRH sevice is living"),
+        @ApiResponse(code = 401, message = "You are not authorized to view the resource"),
+        @ApiResponse(code = 403, message = "Accessing the resource you were trying to reach is forbidden"),
+        @ApiResponse(code = 404, message = "The resource you were trying to reach is not found")
+    }
+    )
     public Mono<ResponseEntity<String>> heartbeat() {
         logger.debug("Receiving request on on thread={} , time={} ", Thread.currentThread().getName(),
             dateTimeFormatter.format(
diff --git a/prh-app-server/src/main/java/org/onap/dcaegen2/services/prh/controllers/ScheduleController.java b/prh-app-server/src/main/java/org/onap/dcaegen2/services/prh/controllers/ScheduleController.java
index 733b7dfc..60572cb3 100644
--- a/prh-app-server/src/main/java/org/onap/dcaegen2/services/prh/controllers/ScheduleController.java
+++ b/prh-app-server/src/main/java/org/onap/dcaegen2/services/prh/controllers/ScheduleController.java
@@ -19,6 +19,8 @@
  */
 package org.onap.dcaegen2.services.prh.controllers;
 
+import io.swagger.annotations.Api;
+import io.swagger.annotations.ApiOperation;
 import java.time.LocalDateTime;
 import java.time.format.DateTimeFormatter;
 import java.util.ArrayList;
@@ -44,6 +46,7 @@ import reactor.core.publisher.Mono;
  */
 @RestController
 @Component
+@Api(value = "ScheduleController", description = "Schedule Controller")
 public class ScheduleController {
 
     private static final Logger logger = LoggerFactory.getLogger(PrhAppConfig.class);
@@ -62,17 +65,20 @@ public class ScheduleController {
     }
 
     @RequestMapping(value = "start", method = RequestMethod.GET)
+    @ApiOperation(value = "Start scheduling worker request")
     public Mono<ResponseEntity<String>> startTasks() {
         logDebug("Starting scheduling worker request on on thread={} , time={} ");
         return Mono.fromSupplier(this::tryToStartTask).map(this::createStartTaskResponse);
     }
 
     @RequestMapping(value = "stopPrh", method = RequestMethod.GET)
+    @ApiOperation(value = "Stop scheduling worker request")
     public Mono<ResponseEntity<String>> stopTask() {
         logDebug("Stopping scheduling worker request on on thread={} , time={} ");
         return getResponseFromCancellationOfTasks();
     }
 
+    @ApiOperation(value = "Get response on stopping task execution")
     private synchronized Mono<ResponseEntity<String>> getResponseFromCancellationOfTasks() {
         scheduledFutureList.forEach(x -> x.cancel(false));
         scheduledFutureList.clear();
@@ -82,6 +88,7 @@ public class ScheduleController {
         });
     }
 
+    @ApiOperation(value = "Start task if possible")
     private synchronized boolean tryToStartTask() {
         if (scheduledFutureList.isEmpty()) {
             scheduledFutureList.add(taskScheduler
@@ -93,6 +100,7 @@ public class ScheduleController {
 
     }
 
+    @ApiOperation(value = "Sends success or error response on starting task execution")
     private ResponseEntity<String> createStartTaskResponse(boolean wasScheduled) {
         if (wasScheduled) {
             logDebug("Sending success response on starting task execution thread={} , time={} ");