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.lang.invoke.MethodHandles;
35 import java.net.MalformedURLException;
37 import java.time.Duration;
38 import java.util.ArrayList;
39 import java.util.Collection;
42 import org.onap.ccsdk.oran.a1policymanagementservice.controllers.VoidResponse;
43 import org.onap.ccsdk.oran.a1policymanagementservice.exceptions.ServiceException;
44 import org.onap.ccsdk.oran.a1policymanagementservice.repository.Policies;
45 import org.onap.ccsdk.oran.a1policymanagementservice.repository.Policy;
46 import org.onap.ccsdk.oran.a1policymanagementservice.repository.Service;
47 import org.onap.ccsdk.oran.a1policymanagementservice.repository.Services;
48 import org.slf4j.Logger;
49 import org.slf4j.LoggerFactory;
50 import org.springframework.beans.factory.annotation.Autowired;
51 import org.springframework.http.HttpStatus;
52 import org.springframework.http.MediaType;
53 import org.springframework.http.ResponseEntity;
54 import org.springframework.web.bind.annotation.DeleteMapping;
55 import org.springframework.web.bind.annotation.GetMapping;
56 import org.springframework.web.bind.annotation.PathVariable;
57 import org.springframework.web.bind.annotation.PutMapping;
58 import org.springframework.web.bind.annotation.RequestBody;
59 import org.springframework.web.bind.annotation.RequestHeader;
60 import org.springframework.web.bind.annotation.RequestParam;
61 import org.springframework.web.bind.annotation.RestController;
63 @RestController("ServiceControllerV2")
65 name = ServiceController.API_NAME, //
66 description = ServiceController.API_DESCRIPTION //
69 public class ServiceController {
71 public static final String API_NAME = "Service Registry and Supervision";
72 public static final String API_DESCRIPTION = "";
74 private final Services services;
75 private final Policies policies;
77 private static Gson gson = new GsonBuilder().create();
79 private static final Logger logger = LoggerFactory.getLogger(MethodHandles.lookup().lookupClass());
82 private PolicyController policyController;
84 ServiceController(Services services, Policies policies) {
85 this.services = services;
86 this.policies = policies;
89 private static final String GET_SERVICE_DETAILS =
90 "Either information about a registered service with given identity or all registered services are returned.";
92 @GetMapping(path = Consts.V2_API_ROOT + "/services", produces = MediaType.APPLICATION_JSON_VALUE) //
93 @Operation(summary = "Returns service information", description = GET_SERVICE_DETAILS) //
94 @ApiResponses(value = { //
95 @ApiResponse(responseCode = "200", //
96 description = "OK", //
97 content = @Content(schema = @Schema(implementation = ServiceStatusList.class))), //
98 @ApiResponse(responseCode = "404", //
99 description = "Service is not found", //
100 content = @Content(schema = @Schema(implementation = ErrorResponse.ErrorInfo.class)))//
102 public ResponseEntity<Object> getServices(//
103 @Parameter(name = Consts.SERVICE_ID_PARAM, required = false, description = "The identity of the service") //
104 @RequestParam(name = Consts.SERVICE_ID_PARAM, required = false) String name) {
105 if (name != null && this.services.get(name) == null) {
106 return ErrorResponse.create("Service not found", HttpStatus.NOT_FOUND);
109 Collection<ServiceStatus> servicesStatus = new ArrayList<>();
110 for (Service s : this.services.getAll()) {
111 if (name == null || name.equals(s.getName())) {
112 servicesStatus.add(toServiceStatus(s));
116 String res = gson.toJson(new ServiceStatusList(servicesStatus));
117 return new ResponseEntity<>(res, HttpStatus.OK);
120 private ServiceStatus toServiceStatus(Service s) {
121 return new ServiceStatus(s.getName(), s.getKeepAliveInterval().toSeconds(), s.timeSinceLastPing().toSeconds(),
125 private void validateRegistrationInfo(ServiceRegistrationInfo registrationInfo)
126 throws ServiceException, MalformedURLException {
127 if (registrationInfo.serviceId.isEmpty()) {
128 throw new ServiceException("Missing mandatory parameter 'service-id'");
130 if (registrationInfo.keepAliveIntervalSeconds < 0) {
131 throw new ServiceException("Keepalive interval shoul be greater or equal to 0");
133 if (!registrationInfo.callbackUrl.isEmpty()) {
134 new URL(registrationInfo.callbackUrl);
138 private static final String REGISTER_SERVICE_DETAILS = "Registering a service is needed to:" //
140 + "<li>Get callbacks about available NearRT RICs.</li>" //
141 + "<li>Activate supervision of the service. If a service is inactive, its policies will automatically be deleted.</li>"//
143 + "Policies can be created even if the service is not registerred. This is a feature which it is optional to use.";
145 @PutMapping(Consts.V2_API_ROOT + "/services")
146 @Operation(summary = "Register a service", description = REGISTER_SERVICE_DETAILS)
147 @ApiResponses(value = { //
148 @ApiResponse(responseCode = "200", description = "Service updated"),
149 @ApiResponse(responseCode = "201", description = "Service created"), //
150 @ApiResponse(responseCode = "400", //
151 description = "The ServiceRegistrationInfo is not accepted", //
152 content = @Content(schema = @Schema(implementation = ErrorResponse.ErrorInfo.class)))})
154 public ResponseEntity<Object> putService(//
155 @RequestBody ServiceRegistrationInfo registrationInfo) {
157 validateRegistrationInfo(registrationInfo);
158 final boolean isCreate = this.services.get(registrationInfo.serviceId) == null;
159 this.services.put(toService(registrationInfo));
160 return new ResponseEntity<>(isCreate ? HttpStatus.CREATED : HttpStatus.OK);
161 } catch (Exception e) {
162 return ErrorResponse.create(e, HttpStatus.BAD_REQUEST);
166 @DeleteMapping(Consts.V2_API_ROOT + "/services/{service_id:.+}")
167 @Operation(summary = "Unregister a service")
168 @ApiResponses(value = { //
169 @ApiResponse(responseCode = "204", description = "Service unregistered"),
170 @ApiResponse(responseCode = "200", description = "Not used", //
171 content = @Content(schema = @Schema(implementation = VoidResponse.class))),
172 @ApiResponse(responseCode = "404", description = "Service not found", //
173 content = @Content(schema = @Schema(implementation = ErrorResponse.ErrorInfo.class)))
176 public ResponseEntity<Object> deleteService(//
177 @PathVariable("service_id") String serviceId, @RequestHeader Map<String, String> headers) {
179 Service service = removeService(serviceId);
180 removePolicies(service, headers);
181 return new ResponseEntity<>(HttpStatus.NO_CONTENT);
182 } catch (ServiceException | NullPointerException e) {
183 logger.warn("Exception caught during service deletion while deleting service {}: {}", serviceId, e.getMessage());
184 return ErrorResponse.create(e, HttpStatus.NOT_FOUND);
188 @Operation(summary = "Heartbeat indicates that the service is running",
189 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)")
190 @ApiResponses(value = { //
191 @ApiResponse(responseCode = "200", description = "Service supervision timer refreshed, OK"), //
192 @ApiResponse(responseCode = "404", description = "The service is not found, needs re-registration",
193 content = @Content(schema = @Schema(implementation = ErrorResponse.ErrorInfo.class)))
197 @PutMapping(Consts.V2_API_ROOT + "/services/{service_id}/keepalive")
198 public ResponseEntity<Object> keepAliveService(//
199 @PathVariable(Consts.SERVICE_ID_PARAM) String serviceId) {
201 services.getService(serviceId).keepAlive();
202 return new ResponseEntity<>(HttpStatus.OK);
203 } catch (ServiceException e) {
204 return ErrorResponse.create(e, HttpStatus.NOT_FOUND);
208 private Service removeService(String name) throws ServiceException {
209 Service service = this.services.getService(name); // Just to verify that it exists
210 logger.trace("Service name to be deleted: {}", service.getName());
211 this.services.remove(service.getName());
215 private void removePolicies(Service service, Map<String, String> headers) {
216 Collection<Policy> policyList = this.policies.getForService(service.getName());
217 logger.trace("Policies to be deleted: {}", policyList);
218 for (Policy policy : policyList) {
220 policyController.deletePolicy(policy.getId(), headers).doOnNext(resp -> {
221 if (resp.getStatusCode().is2xxSuccessful()) {
222 logger.trace("Deleting Policy '{}' when deleting Service '{}'", policy.getId(),
225 logger.warn("Possible problem deleting Policy '{}' when deleting Service '{}'. Continuing, "
226 + "but might trigger a re-sync with affected ric '{}'. Repsonse: \"{}\"",
227 policy.getId(), service.getName(), policy.getRic().getConfig().getRicId(),
231 } catch (Exception e) {
232 logger.warn("Problem deleting Policy '{}' when deleting Service '{}'."
233 + " Continuing, but might trigger a re-sync with affected ric '{}'. Problem: \"{}\"",
234 policy.getId(), service.getName(), policy.getRic().getConfig().getRicId(), e.getMessage());
239 private Service toService(ServiceRegistrationInfo s) {
240 return new Service(s.serviceId, Duration.ofSeconds(s.keepAliveIntervalSeconds), s.callbackUrl);