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.HashSet;
  24 import java.util.Set;
  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.SetupRequest;
  31 import org.oransc.ric.portal.dashboard.DashboardApplication;
  32 import org.oransc.ric.portal.dashboard.DashboardConstants;
  33 import org.oransc.ric.portal.dashboard.model.E2SetupRequestType;
  34 import org.oransc.ric.portal.dashboard.model.E2SetupResponse;
  35 import org.oransc.ric.portal.dashboard.model.IDashboardResponse;
  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.RequestBody;
  44 import org.springframework.web.bind.annotation.RequestMapping;
  45 import org.springframework.web.bind.annotation.RequestMethod;
  46 import org.springframework.web.bind.annotation.RestController;
  47
  48 import io.swagger.annotations.ApiOperation;
  49
  50 /**
  51  * Provides methods to contact the E2 Manager.
  52  *
  53  * As of this writing the E2 interface only supports setup connection and check
  54  * health actions; it does not support query or close operations on existing
  55  * connections. So this class mocks up some of that functionality.
  56  */
  57 @Configuration
  58 @RestController
  59 @RequestMapping(value = DashboardConstants.ENDPOINT_PREFIX + "/e2mgr", produces = MediaType.APPLICATION_JSON_VALUE)
  60 public class E2ManagerController {
  61
  62         private static final Logger logger = LoggerFactory.getLogger(MethodHandles.lookup().lookupClass());
  63
  64         // Populated by the autowired constructor
  65         private final HealthCheckApi e2HealthCheckApi;
  66         private final NodebApi e2NodebApi;
  67
  68         // Stores the requests and results.
  69         // TODO remove when the E2 manager is extended.
  70         private Set<E2SetupResponse> responses = new HashSet<>();
  71
  72         @Autowired
  73         public E2ManagerController(final HealthCheckApi e2HealthCheckApi, final NodebApi e2NodebApi) {
  74                 Assert.notNull(e2HealthCheckApi, "API must not be null");
  75                 Assert.notNull(e2NodebApi, "API must not be null");
  76                 this.e2HealthCheckApi = e2HealthCheckApi;
  77                 this.e2NodebApi = e2NodebApi;
  78         }
  79
  80         private void assertNotNull(Object o) {
  81                 if (o == null)
  82                         throw new IllegalArgumentException("Null not permitted");
  83         }
  84
  85         private void assertNotEmpty(String s) {
  86                 assertNotNull(s);
  87                 if (s.isEmpty())
  88                         throw new IllegalArgumentException("Empty not permitted");
  89         }
  90
  91         @ApiOperation(value = "Gets the E2 manager client library MANIFEST.MF property Implementation-Version.", response = SuccessTransport.class)
  92         @RequestMapping(value = DashboardConstants.VERSION_PATH, method = RequestMethod.GET)
  93         public SuccessTransport getVersion() {
  94                 logger.debug("getVersion enter");
  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         @RequestMapping(value = "/health", method = RequestMethod.GET)
 100         public void getHealth(HttpServletResponse response) {
 101                 logger.debug("getHealth");
 102                 e2HealthCheckApi.healthGet();
 103                 response.setStatus(e2HealthCheckApi.getApiClient().getStatusCode().value());
 104         }
 105
 106         @ApiOperation(value = "Gets the unique requests submitted to the E2 manager.", response = E2SetupResponse.class, responseContainer = "List")
 107         @RequestMapping(value = "/setup", method = RequestMethod.GET)
 108         public Iterable<E2SetupResponse> getRequests() {
 109                 logger.debug("getRequests");
 110                 return responses;
 111         }
 112
 113         @ApiOperation(value = "Sets up an EN-DC RAN connection via the E2 manager.", response = E2SetupResponse.class)
 114         @RequestMapping(value = "/endcSetup", method = RequestMethod.POST)
 115         public E2SetupResponse endcSetup(@RequestBody SetupRequest setupRequest, HttpServletResponse response) {
 116                 logger.debug("endcSetup {}", setupRequest);
 117                 int responseCode = -1;
 118                 try {
 119                         assertNotEmpty(setupRequest.getRanIp());
 120                         assertNotEmpty(setupRequest.getRanName());
 121                         assertNotNull(setupRequest.getRanPort());
 122                         e2NodebApi.endcSetup(setupRequest);
 123                         responseCode = e2NodebApi.getApiClient().getStatusCode().value();
 124                 } catch (Exception ex) {
 125                         logger.warn("endcSetup failed", ex);
 126                         response.setStatus(HttpServletResponse.SC_BAD_REQUEST);
 127                         responseCode = HttpServletResponse.SC_BAD_REQUEST;
 128                 }
 129                 E2SetupResponse r = new E2SetupResponse(E2SetupRequestType.ENDC, setupRequest, responseCode);
 130                 responses.add(r);
 131                 return r;
 132         }
 133
 134         @ApiOperation(value = "Sets up an X2 RAN connection via the E2 manager.", response = E2SetupResponse.class)
 135         @RequestMapping(value = "/x2Setup", method = RequestMethod.POST)
 136         public IDashboardResponse x2Setup(@RequestBody SetupRequest setupRequest, HttpServletResponse response) {
 137                 logger.debug("x2Setup {}", setupRequest);
 138                 int responseCode = -1;
 139                 try {
 140                         assertNotEmpty(setupRequest.getRanIp());
 141                         assertNotEmpty(setupRequest.getRanName());
 142                         assertNotNull(setupRequest.getRanPort());
 143                         e2NodebApi.x2Setup(setupRequest);
 144                         responseCode = e2NodebApi.getApiClient().getStatusCode().value();
 145                 } catch (Exception ex) {
 146                         logger.warn("x2Setup failed", ex);
 147                         response.setStatus(HttpServletResponse.SC_BAD_REQUEST);
 148                         responseCode = HttpServletResponse.SC_BAD_REQUEST;
 149                 }
 150                 E2SetupResponse r = new E2SetupResponse(E2SetupRequestType.X2, setupRequest, responseCode);
 151                 responses.add(r);
 152                 return r;
 153         }
 154
 155 }