webapp-backend/src/main/java/org/oransc/ric/portal/dashboard/controller/E2ManagerController.java

   1 /*-
   2  * ========================LICENSE_START=================================
   3  * O-RAN-SC
   4  * %%
   5  * Copyright (C) 2019 AT&T Intellectual Property and Nokia
   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
  10  *
  11  *      http://www.apache.org/licenses/LICENSE-2.0
  12  *
  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===================================
  19  */
  20 package org.oransc.ric.portal.dashboard.controller;
  21
  22 import java.lang.invoke.MethodHandles;
  23 import java.util.ArrayList;
  24 import java.util.List;
  25
  26 import javax.servlet.http.HttpServletResponse;
  27
  28 import org.oransc.ric.e2mgr.client.api.HealthCheckApi;
  29 import org.oransc.ric.e2mgr.client.api.NodebApi;
  30 import org.oransc.ric.e2mgr.client.model.GetNodebResponse;
  31 import org.oransc.ric.e2mgr.client.model.NodebIdentity;
  32 import org.oransc.ric.e2mgr.client.model.NodebIdentityGlobalNbId;
  33 import org.oransc.ric.e2mgr.client.model.SetupRequest;
  34 import org.oransc.ric.portal.dashboard.DashboardApplication;
  35 import org.oransc.ric.portal.dashboard.DashboardConstants;
  36 import org.oransc.ric.portal.dashboard.model.RanDetailsTransport;
  37 import org.oransc.ric.portal.dashboard.model.SuccessTransport;
  38 import org.slf4j.Logger;
  39 import org.slf4j.LoggerFactory;
  40 import org.springframework.beans.factory.annotation.Autowired;
  41 import org.springframework.beans.factory.annotation.Value;
  42 import org.springframework.context.annotation.Configuration;
  43 import org.springframework.http.MediaType;
  44 import org.springframework.util.Assert;
  45 import org.springframework.web.bind.annotation.PathVariable;
  46 import org.springframework.web.bind.annotation.RequestBody;
  47 import org.springframework.web.bind.annotation.RequestMapping;
  48 import org.springframework.web.bind.annotation.RequestMethod;
  49 import org.springframework.web.bind.annotation.RestController;
  50 import org.springframework.web.client.HttpStatusCodeException;
  51
  52 import io.swagger.annotations.ApiOperation;
  53
  54 /**
  55  * Proxies calls from the front end to the E2 Manager API. All methods answer
  56  * 502 on failure and wrap the remote details: <blockquote>HTTP server received
  57  * an invalid response from a server it consulted when acting as a proxy or
  58  * gateway.</blockquote>
  59  *
  60  * In R1 the E2 interface does not yet implement the get-ID-list method, so this
  61  * class mocks up some functionality.
  62  */
  63 @Configuration
  64 @RestController
  65 @RequestMapping(value = E2ManagerController.CONTROLLER_PATH, produces = MediaType.APPLICATION_JSON_VALUE)
  66 public class E2ManagerController {
  67
  68         private static final Logger logger = LoggerFactory.getLogger(MethodHandles.lookup().lookupClass());
  69
  70         // Publish paths in constants so tests are easy to write
  71         public static final String CONTROLLER_PATH = DashboardConstants.ENDPOINT_PREFIX + "/e2mgr";
  72         // Endpoints
  73         public static final String HEALTH_METHOD = "health";
  74         public static final String NODEB_METHOD = "/nodeb";
  75         public static final String NODEB_LIST_METHOD = "/nodeb-ids";
  76         public static final String RAN_METHOD = "/ran";
  77         public static final String ENDC_SETUP_METHOD = "/endcSetup";
  78         public static final String X2_SETUP_METHOD = "/x2Setup";
  79         public static final String VERSION_METHOD = DashboardConstants.VERSION_METHOD;
  80         // Path parameters
  81         private static final String PP_RANNAME = "ranName";
  82
  83         // Populated by the autowired constructor
  84         private final HealthCheckApi e2HealthCheckApi;
  85         private final NodebApi e2NodebApi;
  86
  87         // TODO: remove this when E2 delivers the feature
  88         private final List<NodebIdentity> mockNodebIdList;
  89
  90         @Autowired
  91         public E2ManagerController(final HealthCheckApi e2HealthCheckApi, final NodebApi e2NodebApi,
  92                         @Value("${e2mgr.mock.rannames:#{null}}") final String mockRanNames) {
  93                 Assert.notNull(e2HealthCheckApi, "API must not be null");
  94                 Assert.notNull(e2NodebApi, "API must not be null");
  95                 this.e2HealthCheckApi = e2HealthCheckApi;
  96                 this.e2NodebApi = e2NodebApi;
  97                 mockNodebIdList = new ArrayList<>();
  98                 if (mockRanNames != null) {
  99                         logger.debug("ctor: Mocking RAN names: {}", mockRanNames);
 100                         for (String id : mockRanNames.split(",")) {
 101                                 NodebIdentityGlobalNbId globalNbId = new NodebIdentityGlobalNbId().nbId("mockNbId").plmnId("mockPlmId");
 102                                 mockNodebIdList.add(new NodebIdentity().globalNbId(globalNbId).inventoryName(id.trim()));
 103                         }
 104                 }
 105         }
 106
 107         @ApiOperation(value = "Gets the E2 manager client library MANIFEST.MF property Implementation-Version.", response = SuccessTransport.class)
 108         @RequestMapping(value = VERSION_METHOD, method = RequestMethod.GET)
 109         public SuccessTransport getClientVersion() {
 110                 return new SuccessTransport(200, DashboardApplication.getImplementationVersion(HealthCheckApi.class));
 111         }
 112
 113         @ApiOperation(value = "Gets the health from the E2 manager, expressed as the response code.")
 114         @RequestMapping(value = HEALTH_METHOD, method = RequestMethod.GET)
 115         public void healthGet(HttpServletResponse response) {
 116                 logger.debug("healthGet");
 117                 e2HealthCheckApi.healthGet();
 118                 response.setStatus(e2HealthCheckApi.getApiClient().getStatusCode().value());
 119         }
 120
 121         // This calls other methods to simplify the task of the front-end.
 122         @ApiOperation(value = "Gets all RAN identities and statuses from the E2 manager.", response = RanDetailsTransport.class, responseContainer = "List")
 123         @RequestMapping(value = RAN_METHOD, method = RequestMethod.GET)
 124         public List<RanDetailsTransport> getRanDetails() {
 125                 logger.debug("getRanDetails");
 126                 // TODO: remove mock when e2mgr delivers the getNodebIdList() method
 127                 List<NodebIdentity> nodebIdList = mockNodebIdList.isEmpty() ? e2NodebApi.getNodebIdList() : mockNodebIdList;
 128                 List<RanDetailsTransport> details = new ArrayList<>();
 129                 for (NodebIdentity nbid : nodebIdList) {
 130                         GetNodebResponse nbResp = null;
 131                         try {
 132                                 // Catch exceptions to keep looping despite failures
 133                                 nbResp = e2NodebApi.getNb(nbid.getInventoryName());
 134                         } catch (HttpStatusCodeException ex) {
 135                                 logger.warn("E2 getNb failed for name {}: {}", nbid.getInventoryName(), ex.toString());
 136                                 nbResp = new GetNodebResponse().connectionStatus("UNKNOWN").ip("UNKNOWN").port(-1)
 137                                                 .ranName(nbid.getInventoryName());
 138                         }
 139                         details.add(new RanDetailsTransport(nbid, nbResp));
 140                 }
 141                 return details;
 142         }
 143
 144         @ApiOperation(value = "Get RAN identities list.", response = NodebIdentity.class, responseContainer = "List")
 145         @RequestMapping(value = NODEB_LIST_METHOD, method = RequestMethod.GET)
 146         public List<NodebIdentity> getNodebIdList() {
 147                 logger.debug("getNodebIdList");
 148                 return e2NodebApi.getNodebIdList();
 149         }
 150
 151         @ApiOperation(value = "Get RAN by name.", response = GetNodebResponse.class)
 152         @RequestMapping(value = NODEB_METHOD + "/{" + PP_RANNAME + "}", method = RequestMethod.GET)
 153         public GetNodebResponse getNb(@PathVariable(PP_RANNAME) String ranName) {
 154                 logger.debug("getNb {}", ranName);
 155                 return e2NodebApi.getNb(ranName);
 156         }
 157
 158         @ApiOperation(value = "Close all connections to the RANs and delete the data from the nodeb-rnib DB.")
 159         @RequestMapping(value = NODEB_METHOD, method = RequestMethod.DELETE)
 160         public void nodebDelete(HttpServletResponse response) {
 161                 logger.debug("nodebDelete");
 162                 e2NodebApi.nodebDelete();
 163                 response.setStatus(e2NodebApi.getApiClient().getStatusCode().value());
 164         }
 165
 166         @ApiOperation(value = "Sets up an EN-DC RAN connection via the E2 manager.")
 167         @RequestMapping(value = ENDC_SETUP_METHOD, method = RequestMethod.POST)
 168         public void endcSetup(@RequestBody SetupRequest setupRequest, HttpServletResponse response) {
 169                 logger.debug("endcSetup {}", setupRequest);
 170                 e2NodebApi.endcSetup(setupRequest);
 171                 response.setStatus(e2NodebApi.getApiClient().getStatusCode().value());
 172         }
 173
 174         @ApiOperation(value = "Sets up an X2 RAN connection via the E2 manager.")
 175         @RequestMapping(value = X2_SETUP_METHOD, method = RequestMethod.POST)
 176         public void x2Setup(@RequestBody SetupRequest setupRequest, HttpServletResponse response) {
 177                 logger.debug("x2Setup {}", setupRequest);
 178                 e2NodebApi.x2Setup(setupRequest);
 179                 response.setStatus(e2NodebApi.getApiClient().getStatusCode().value());
 180         }
 181
 182 }