gerrit.onap Code Review - ccsdk/oran.git/blob

   1 /*-
   2  * ========================LICENSE_START=================================
   3  * Copyright (C) 2020-2023 Nordix Foundation. All rights reserved.
   4  * ======================================================================
   5  * Licensed under the Apache License, Version 2.0 (the "License");
   6  * you may not use this file except in compliance with the License.
   7  * You may obtain a copy of the License at
   8  *
   9  *      http://www.apache.org/licenses/LICENSE-2.0
  10  *
  11  * Unless required by applicable law or agreed to in writing, software
  12  * distributed under the License is distributed on an "AS IS" BASIS,
  13  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  14  * See the License for the specific language governing permissions and
  15  * limitations under the License.
  16  * ========================LICENSE_END===================================
  17  */
  18
  19 package org.onap.ccsdk.oran.a1policymanagementservice.controllers.v2;
  20
  21 import com.google.gson.Gson;
  22 import com.google.gson.GsonBuilder;
  23 import com.google.gson.JsonObject;
  24 import com.google.gson.JsonParser;
  25 import io.swagger.v3.oas.annotations.tags.Tag;
  26 import org.onap.ccsdk.oran.a1policymanagementservice.configuration.ApplicationConfig;
  27 import org.onap.ccsdk.oran.a1policymanagementservice.configuration.ApplicationConfigParser;
  28 import org.onap.ccsdk.oran.a1policymanagementservice.configuration.ConfigurationFile;
  29 import org.onap.ccsdk.oran.a1policymanagementservice.controllers.api.v2.ConfigurationApi;
  30 import org.slf4j.Logger;
  31 import org.slf4j.LoggerFactory;
  32 import org.springframework.beans.factory.annotation.Autowired;
  33 import org.springframework.http.HttpStatus;
  34 import org.springframework.http.ResponseEntity;
  35 import org.springframework.web.bind.annotation.RestController;
  36 import org.springframework.web.server.ServerWebExchange;
  37 import reactor.core.publisher.Mono;
  38 import java.io.IOException;
  39 import java.util.Optional;
  40
  41 @RestController("ConfigurationControllerV2")
  42 @Tag( //
  43         name = ConfigurationController.API_NAME, //
  44         description = ConfigurationController.API_DESCRIPTION //
  45 )
  46 public class ConfigurationController implements ConfigurationApi {
  47     private static final Logger logger = LoggerFactory.getLogger(ConfigurationController.class);
  48
  49     public static final String API_NAME = "Management of configuration";
  50     public static final String API_DESCRIPTION = "";
  51
  52     private final ConfigurationFile configurationFile;
  53     private final ApplicationConfig applicationConfig;
  54
  55     ConfigurationController(@Autowired ConfigurationFile configurationFile,
  56             @Autowired ApplicationConfig applicationConfig) {
  57         this.configurationFile = configurationFile;
  58         this.applicationConfig = applicationConfig;
  59     }
  60
  61     private static Gson gson = new GsonBuilder() //
  62             .create(); //
  63
  64     @Override
  65     public Mono<ResponseEntity<Object>> putConfiguration(final Mono<Object> configuration,
  66                                                          final ServerWebExchange exchange) {
  67         return configuration
  68                 .flatMap(configObject -> {
  69                     try {
  70                         String configAsString = gson.toJson(configObject);
  71                         JsonObject configJson = JsonParser.parseString(configAsString).getAsJsonObject();
  72                         ApplicationConfigParser configParser = new ApplicationConfigParser(applicationConfig);
  73                         configParser.parse(configJson);
  74                         configurationFile.writeFile(configJson);
  75                         logger.info("Configuration changed through REST call.");
  76                         return Mono.just(new ResponseEntity<>(HttpStatus.OK));
  77                     } catch (IOException ioe) {
  78                         logger.warn("Configuration file not written, {}.", ioe.getMessage());
  79                         return ErrorResponse.createMono("Internal error when writing the configuration.",
  80                                 HttpStatus.INTERNAL_SERVER_ERROR);
  81                     } catch (Exception e) {
  82                         return ErrorResponse.createMono(e, HttpStatus.BAD_REQUEST);
  83                     }
  84                 })
  85                 .onErrorResume(error -> {
  86                     return ErrorResponse.createMono(error.getMessage(), HttpStatus.INTERNAL_SERVER_ERROR);
  87                 });
  88     }
  89
  90     @Override
  91     public Mono<ResponseEntity<Object>> getConfiguration(final ServerWebExchange exchange) {
  92         try {
  93             Optional<JsonObject> rootObject = configurationFile.readFile();
  94             if (rootObject.isPresent()) {
  95                 return Mono.just(new ResponseEntity<>(rootObject.get().toString(), HttpStatus.OK));
  96             } else {
  97                 return ErrorResponse.createMono("File does not exist", HttpStatus.NOT_FOUND);
  98             }
  99         } catch (Exception e) {
 100             return ErrorResponse.createMono(e, HttpStatus.INTERNAL_SERVER_ERROR);
 101         }
 102     }
 103
 104 }