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.SetupRequest;
  33 import org.oransc.ric.portal.dashboard.DashboardApplication;
  34 import org.oransc.ric.portal.dashboard.DashboardConstants;
  35 import org.oransc.ric.portal.dashboard.model.RanDetailsTransport;
  36 import org.oransc.ric.portal.dashboard.model.SuccessTransport;
  37 import org.slf4j.Logger;
  38 import org.slf4j.LoggerFactory;
  39 import org.springframework.beans.factory.annotation.Autowired;
  40 import org.springframework.context.annotation.Configuration;
  41 import org.springframework.http.MediaType;
  42 import org.springframework.util.Assert;
  43 import org.springframework.web.bind.annotation.DeleteMapping;
  44 import org.springframework.web.bind.annotation.GetMapping;
  45 import org.springframework.web.bind.annotation.PathVariable;
  46 import org.springframework.web.bind.annotation.PostMapping;
  47 import org.springframework.web.bind.annotation.RequestBody;
  48 import org.springframework.web.bind.annotation.RequestMapping;
  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 @Configuration
  61 @RestController
  62 @RequestMapping(value = E2ManagerController.CONTROLLER_PATH, produces = MediaType.APPLICATION_JSON_VALUE)
  63 public class E2ManagerController {
  64
  65         private static final Logger logger = LoggerFactory.getLogger(MethodHandles.lookup().lookupClass());
  66
  67         // Publish paths in constants so tests are easy to write
  68         public static final String CONTROLLER_PATH = DashboardConstants.ENDPOINT_PREFIX + "/e2mgr";
  69         // Endpoints
  70         public static final String HEALTH_METHOD = "health";
  71         public static final String NODEB_METHOD = "/nodeb";
  72         public static final String NODEB_LIST_METHOD = "/nodeb-ids";
  73         public static final String RAN_METHOD = "/ran";
  74         public static final String ENDC_SETUP_METHOD = "/endcSetup";
  75         public static final String X2_SETUP_METHOD = "/x2Setup";
  76         public static final String VERSION_METHOD = DashboardConstants.VERSION_METHOD;
  77         // Path parameters
  78         private static final String PP_RANNAME = "ranName";
  79
  80         // Populated by the autowired constructor
  81         private final HealthCheckApi e2HealthCheckApi;
  82         private final NodebApi e2NodebApi;
  83
  84         @Autowired
  85         public E2ManagerController(final HealthCheckApi e2HealthCheckApi, final NodebApi e2NodebApi) {
  86                 Assert.notNull(e2HealthCheckApi, "API must not be null");
  87                 Assert.notNull(e2NodebApi, "API must not be null");
  88                 this.e2HealthCheckApi = e2HealthCheckApi;
  89                 this.e2NodebApi = e2NodebApi;
  90         }
  91
  92         @ApiOperation(value = "Gets the E2 manager client library MANIFEST.MF property Implementation-Version.", response = SuccessTransport.class)
  93         @GetMapping(VERSION_METHOD)
  94         public SuccessTransport getClientVersion() {
  95                 return new SuccessTransport(200, DashboardApplication.getImplementationVersion(HealthCheckApi.class));
  96         }
  97
  98         @ApiOperation(value = "Gets the health from the E2 manager, expressed as the response code.")
  99         @GetMapping(HEALTH_METHOD)
 100         public void healthGet(HttpServletResponse response) {
 101                 logger.debug("healthGet");
 102                 e2HealthCheckApi.healthGet();
 103                 response.setStatus(e2HealthCheckApi.getApiClient().getStatusCode().value());
 104         }
 105
 106         // This calls other methods to simplify the task of the front-end.
 107         @ApiOperation(value = "Gets all RAN identities and statuses from the E2 manager.", response = RanDetailsTransport.class, responseContainer = "List")
 108         @GetMapping(RAN_METHOD)
 109         public List<RanDetailsTransport> getRanDetails() {
 110                 logger.debug("getRanDetails");
 111                 List<NodebIdentity> nodebIdList = e2NodebApi.getNodebIdList();
 112                 List<RanDetailsTransport> details = new ArrayList<>();
 113                 for (NodebIdentity nbid : nodebIdList) {
 114                         GetNodebResponse nbResp = null;
 115                         try {
 116                                 // Catch exceptions to keep looping despite failures
 117                                 nbResp = e2NodebApi.getNb(nbid.getInventoryName());
 118                         } catch (HttpStatusCodeException ex) {
 119                                 logger.warn("E2 getNb failed for name {}: {}", nbid.getInventoryName(), ex.toString());
 120                                 nbResp = new GetNodebResponse().connectionStatus("UNKNOWN").ip("UNKNOWN").port(-1)
 121                                                 .ranName(nbid.getInventoryName());
 122                         }
 123                         details.add(new RanDetailsTransport(nbid, nbResp));
 124                 }
 125                 return details;
 126         }
 127
 128         @ApiOperation(value = "Get RAN identities list.", response = NodebIdentity.class, responseContainer = "List")
 129         @GetMapping(NODEB_LIST_METHOD)
 130         public List<NodebIdentity> getNodebIdList() {
 131                 logger.debug("getNodebIdList");
 132                 return e2NodebApi.getNodebIdList();
 133         }
 134
 135         @ApiOperation(value = "Get RAN by name.", response = GetNodebResponse.class)
 136         @GetMapping(NODEB_METHOD + "/{" + PP_RANNAME + "}")
 137         public GetNodebResponse getNb(@PathVariable(PP_RANNAME) String ranName) {
 138                 logger.debug("getNb {}", ranName);
 139                 return e2NodebApi.getNb(ranName);
 140         }
 141
 142         @ApiOperation(value = "Close all connections to the RANs and delete the data from the nodeb-rnib DB.")
 143         @DeleteMapping(NODEB_METHOD)
 144         public void nodebDelete(HttpServletResponse response) {
 145                 logger.debug("nodebDelete");
 146                 e2NodebApi.nodebDelete();
 147                 response.setStatus(e2NodebApi.getApiClient().getStatusCode().value());
 148         }
 149
 150         @ApiOperation(value = "Sets up an EN-DC RAN connection via the E2 manager.")
 151         @PostMapping(ENDC_SETUP_METHOD)
 152         public void endcSetup(@RequestBody SetupRequest setupRequest, HttpServletResponse response) {
 153                 logger.debug("endcSetup {}", setupRequest);
 154                 e2NodebApi.endcSetup(setupRequest);
 155                 response.setStatus(e2NodebApi.getApiClient().getStatusCode().value());
 156         }
 157
 158         @ApiOperation(value = "Sets up an X2 RAN connection via the E2 manager.")
 159         @PostMapping(X2_SETUP_METHOD)
 160         public void x2Setup(@RequestBody SetupRequest setupRequest, HttpServletResponse response) {
 161                 logger.debug("x2Setup {}", setupRequest);
 162                 e2NodebApi.x2Setup(setupRequest);
 163                 response.setStatus(e2NodebApi.getApiClient().getStatusCode().value());
 164         }
 165
 166 }