2 * ========================LICENSE_START=================================
4 * ======================================================================
5 * Copyright (C) 2019-2020 Nordix Foundation. All rights reserved.
6 * ======================================================================
7 * Licensed under the Apache License, Version 2.0 (the "License");
8 * you may not use this file except in compliance with the License.
9 * You may obtain a copy of the License at
11 * http://www.apache.org/licenses/LICENSE-2.0
13 * Unless required by applicable law or agreed to in writing, software
14 * distributed under the License is distributed on an "AS IS" BASIS,
15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 * See the License for the specific language governing permissions and
17 * limitations under the License.
18 * ========================LICENSE_END===================================
21 package org.onap.ccsdk.oran.a1policymanagementservice.controllers.v2;
23 import com.google.gson.Gson;
24 import com.google.gson.GsonBuilder;
26 import io.swagger.v3.oas.annotations.Operation;
27 import io.swagger.v3.oas.annotations.Parameter;
28 import io.swagger.v3.oas.annotations.media.Content;
29 import io.swagger.v3.oas.annotations.media.Schema;
30 import io.swagger.v3.oas.annotations.responses.ApiResponse;
31 import io.swagger.v3.oas.annotations.responses.ApiResponses;
32 import io.swagger.v3.oas.annotations.tags.Tag;
34 import java.net.MalformedURLException;
36 import java.time.Duration;
37 import java.util.ArrayList;
38 import java.util.Collection;
40 import org.onap.ccsdk.oran.a1policymanagementservice.controllers.VoidResponse;
41 import org.onap.ccsdk.oran.a1policymanagementservice.exceptions.ServiceException;
42 import org.onap.ccsdk.oran.a1policymanagementservice.repository.Policies;
43 import org.onap.ccsdk.oran.a1policymanagementservice.repository.Policy;
44 import org.onap.ccsdk.oran.a1policymanagementservice.repository.Service;
45 import org.onap.ccsdk.oran.a1policymanagementservice.repository.Services;
46 import org.springframework.beans.factory.annotation.Autowired;
47 import org.springframework.http.HttpStatus;
48 import org.springframework.http.MediaType;
49 import org.springframework.http.ResponseEntity;
50 import org.springframework.web.bind.annotation.DeleteMapping;
51 import org.springframework.web.bind.annotation.GetMapping;
52 import org.springframework.web.bind.annotation.PathVariable;
53 import org.springframework.web.bind.annotation.PutMapping;
54 import org.springframework.web.bind.annotation.RequestBody;
55 import org.springframework.web.bind.annotation.RequestParam;
56 import org.springframework.web.bind.annotation.RestController;
58 @RestController("ServiceControllerV2")
60 name = ServiceController.API_NAME, //
61 description = ServiceController.API_DESCRIPTION //
64 public class ServiceController {
66 public static final String API_NAME = "Service Registry and Supervision";
67 public static final String API_DESCRIPTION = "";
69 private final Services services;
70 private final Policies policies;
72 private static Gson gson = new GsonBuilder().create();
75 ServiceController(Services services, Policies policies) {
76 this.services = services;
77 this.policies = policies;
80 private static final String GET_SERVICE_DETAILS =
81 "Either information about a registered service with given identity or all registered services are returned.";
83 @GetMapping(path = Consts.V2_API_ROOT + "/services", produces = MediaType.APPLICATION_JSON_VALUE) //
84 @Operation(summary = "Returns service information", description = GET_SERVICE_DETAILS) //
85 @ApiResponses(value = { //
86 @ApiResponse(responseCode = "200", //
87 description = "OK", //
88 content = @Content(schema = @Schema(implementation = ServiceStatusList.class))), //
89 @ApiResponse(responseCode = "404", //
90 description = "Service is not found", //
91 content = @Content(schema = @Schema(implementation = ErrorResponse.ErrorInfo.class)))//
93 public ResponseEntity<Object> getServices(//
94 @Parameter(name = Consts.SERVICE_ID_PARAM, required = false, description = "The identity of the service") //
95 @RequestParam(name = Consts.SERVICE_ID_PARAM, required = false) String name) {
96 if (name != null && this.services.get(name) == null) {
97 return ErrorResponse.create("Service not found", HttpStatus.NOT_FOUND);
100 Collection<ServiceStatus> servicesStatus = new ArrayList<>();
101 for (Service s : this.services.getAll()) {
102 if (name == null || name.equals(s.getName())) {
103 servicesStatus.add(toServiceStatus(s));
107 String res = gson.toJson(new ServiceStatusList(servicesStatus));
108 return new ResponseEntity<>(res, HttpStatus.OK);
111 private ServiceStatus toServiceStatus(Service s) {
112 return new ServiceStatus(s.getName(), s.getKeepAliveInterval().toSeconds(), s.timeSinceLastPing().toSeconds(),
116 private void validateRegistrationInfo(ServiceRegistrationInfo registrationInfo)
117 throws ServiceException, MalformedURLException {
118 if (registrationInfo.serviceId.isEmpty()) {
119 throw new ServiceException("Missing mandatory parameter 'service-id'");
121 if (registrationInfo.keepAliveIntervalSeconds < 0) {
122 throw new ServiceException("Keepalive interval shoul be greater or equal to 0");
124 if (!registrationInfo.callbackUrl.isEmpty()) {
125 new URL(registrationInfo.callbackUrl);
129 private static final String REGISTER_SERVICE_DETAILS = "Registering a service is needed to:" //
131 + "<li>Get callbacks.</li>" //
132 + "<li>Activate supervision of the service. If a service is inactive, its policies will be deleted.</li>"//
136 @PutMapping(Consts.V2_API_ROOT + "/services")
137 @Operation(summary = "Register a service", description = REGISTER_SERVICE_DETAILS)
138 @ApiResponses(value = { //
139 @ApiResponse(responseCode = "200", description = "Service updated"),
140 @ApiResponse(responseCode = "201", description = "Service created"), //
141 @ApiResponse(responseCode = "400", //
142 description = "The ServiceRegistrationInfo is not accepted", //
143 content = @Content(schema = @Schema(implementation = ErrorResponse.ErrorInfo.class)))})
145 public ResponseEntity<Object> putService(//
146 @RequestBody ServiceRegistrationInfo registrationInfo) {
148 validateRegistrationInfo(registrationInfo);
149 final boolean isCreate = this.services.get(registrationInfo.serviceId) == null;
150 this.services.put(toService(registrationInfo));
151 return new ResponseEntity<>(isCreate ? HttpStatus.CREATED : HttpStatus.OK);
152 } catch (Exception e) {
153 return ErrorResponse.create(e, HttpStatus.BAD_REQUEST);
157 @DeleteMapping(Consts.V2_API_ROOT + "/services/{service_id:.+}")
158 @Operation(summary = "Unregister a service")
159 @ApiResponses(value = { //
160 @ApiResponse(responseCode = "204", description = "Service unregistered"),
161 @ApiResponse(responseCode = "200", description = "Not used", //
162 content = @Content(schema = @Schema(implementation = VoidResponse.class))),
163 @ApiResponse(responseCode = "404", description = "Service not found", //
164 content = @Content(schema = @Schema(implementation = ErrorResponse.ErrorInfo.class)))
167 public ResponseEntity<Object> deleteService(//
168 @PathVariable("service_id") String serviceId) {
170 Service service = removeService(serviceId);
171 // Remove the policies from the repo and let the consistency monitoring
173 removePolicies(service);
174 return new ResponseEntity<>(HttpStatus.NO_CONTENT);
175 } catch (ServiceException e) {
176 return ErrorResponse.create(e, HttpStatus.NOT_FOUND);
180 @Operation(summary = "Heartbeat indicates that the service is running",
181 description = "A registered service should invoke this operation regularly to indicate that it is still alive. If a registered service fails to invoke this operation before the end of a timeout period the service will be deregistered and all its A1 policies wil be removed. (This timeout can be set or disabled when each service is initially registered)")
182 @ApiResponses(value = { //
183 @ApiResponse(responseCode = "200", description = "Service supervision timer refreshed, OK"), //
184 @ApiResponse(responseCode = "404", description = "The service is not found, needs re-registration",
185 content = @Content(schema = @Schema(implementation = ErrorResponse.ErrorInfo.class)))
189 @PutMapping(Consts.V2_API_ROOT + "/services/{service_id}/keepalive")
190 public ResponseEntity<Object> keepAliveService(//
191 @PathVariable(Consts.SERVICE_ID_PARAM) String serviceId) {
193 services.getService(serviceId).keepAlive();
194 return new ResponseEntity<>(HttpStatus.OK);
195 } catch (ServiceException e) {
196 return ErrorResponse.create(e, HttpStatus.NOT_FOUND);
200 private Service removeService(String name) throws ServiceException {
201 Service service = this.services.getService(name); // Just to verify that it exists
202 this.services.remove(service.getName());
206 private void removePolicies(Service service) {
207 Collection<Policy> policyList = this.policies.getForService(service.getName());
208 for (Policy policy : policyList) {
209 this.policies.remove(policy);
213 private Service toService(ServiceRegistrationInfo s) {
214 return new Service(s.serviceId, Duration.ofSeconds(s.keepAliveIntervalSeconds), s.callbackUrl);