Add implementation of the API methods

Author: tfesenko

Expanded Pet Store (v3)/implementation/springboot-petstore-demo/src/main/java/com/reprezen/demo/springboot/OpenAPI2SpringBoot.java

@@ -7,7 +7,7 @@
 import org.springframework.context.annotation.ComponentScan;
 
 @SpringBootApplication
-@ComponentScan(basePackages = { "com.reprezen.demo.springboot", "com.reprezen.demo.springboot.api" , "com.reprezen.demo.springboot.swaggerui"})
+@ComponentScan(basePackages = { "com.reprezen.demo.springboot", "com.reprezen.demo.springboot.api" ,  "com.reprezen.demo.springboot.api.impl", "com.reprezen.demo.springboot.swaggerui"})
 public class OpenAPI2SpringBoot implements CommandLineRunner {
 
     @Override

Expanded Pet Store (v3)/implementation/springboot-petstore-demo/src/main/java/com/reprezen/demo/springboot/api/PetsApiController.java

@@ -0,0 +1,84 @@
+package com.reprezen.demo.springboot.api.impl;
+
+import java.util.List;
+import java.util.Map;
+import java.util.Optional;
+import java.util.stream.Collectors;
+
+import javax.validation.Valid;
+
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
+import org.springframework.stereotype.Controller;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.context.request.NativeWebRequest;
+
+import com.google.common.collect.Maps;
+import com.reprezen.demo.springboot.api.PetsApi;
+import com.reprezen.demo.springboot.model.NewPet;
+import com.reprezen.demo.springboot.model.Pet;
+
+import io.swagger.annotations.ApiParam;
+
+@Controller
+@RequestMapping("${openapi.swaggerPetstore.base-path:/api}")
+public class PetsApiImpl implements PetsApi {
+
+	private final Map<Long, Pet> pets = Maps.newHashMap();
+	private long nextId = 0l;
+
+	private final NativeWebRequest request;
+
+	@org.springframework.beans.factory.annotation.Autowired
+	public PetsApiImpl(NativeWebRequest request) {
+		this.request = request;
+	}
+
+	@Override
+	public Optional<NativeWebRequest> getRequest() {
+		return Optional.ofNullable(request);
+	}
+
+	@Override
+	public ResponseEntity<Pet> addPet(
+			@ApiParam(value = "Pet to add to the store", required = true) @Valid @RequestBody NewPet newPet) {
+		Pet petToAdd = new Pet();
+		petToAdd.id(nextId++).name(newPet.getName()).tag(newPet.getTag());
+		pets.put(petToAdd.getId(), petToAdd);
+		return new ResponseEntity<>(petToAdd, HttpStatus.CREATED);
+	}
+
+	@Override
+	public ResponseEntity<Void> deletePet(
+			@ApiParam(value = "ID of pet to delete", required = true) @PathVariable("id") Long id) {
+		if (!pets.containsKey(id)) {
+			return new ResponseEntity<>(HttpStatus.NOT_FOUND);
+		}
+		pets.remove(id);
+		return new ResponseEntity<>(HttpStatus.NO_CONTENT);
+	}
+
+	@Override
+	public ResponseEntity<Pet> findPetById(
+			@ApiParam(value = "ID of pet to fetch", required = true) @PathVariable("id") Long id) {
+		if (!pets.containsKey(id)) {
+			return new ResponseEntity<>(HttpStatus.NOT_FOUND);
+		}
+		return new ResponseEntity<>(pets.get(id), HttpStatus.ACCEPTED);
+	}
+
+	@Override
+	public ResponseEntity<List<Pet>> findPets(
+			@ApiParam(value = "tags to filter by") @Valid @RequestParam(value = "tags", required = false) List<String> tags,
+			@ApiParam(value = "maximum number of results to return") @Valid @RequestParam(value = "limit", required = false) Integer limitObject) {
+		int limit = limitObject == null ? Integer.MAX_VALUE : limitObject;
+		List<Pet> filteredPets = pets.values().stream()//
+				.filter(pet -> (tags == null || tags.isEmpty()) ? true : tags.contains(pet.getTag()))//
+				.limit(limit)//
+				.collect(Collectors.toList());
+		return new ResponseEntity<>(filteredPets, HttpStatus.ACCEPTED);
+	}
+}