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/*-
* ========================LICENSE_START=================================
* Copyright (C) 2020-2023 Nordix Foundation. All rights reserved.
* ======================================================================
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
* ========================LICENSE_END===================================
*/
package org.onap.ccsdk.oran.a1policymanagementservice.controllers.v2;
import com.google.gson.Gson;
import com.google.gson.GsonBuilder;
import com.google.gson.JsonObject;
import com.google.gson.JsonParser;
import io.swagger.v3.oas.annotations.tags.Tag;
import org.onap.ccsdk.oran.a1policymanagementservice.configuration.ApplicationConfig;
import org.onap.ccsdk.oran.a1policymanagementservice.configuration.ApplicationConfigParser;
import org.onap.ccsdk.oran.a1policymanagementservice.configuration.ConfigurationFile;
import org.onap.ccsdk.oran.a1policymanagementservice.controllers.api.v2.ConfigurationApi;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.server.ServerWebExchange;
import reactor.core.publisher.Mono;
import java.io.IOException;
import java.util.Optional;
@RestController("ConfigurationControllerV2")
@Tag( //
name = ConfigurationController.API_NAME, //
description = ConfigurationController.API_DESCRIPTION //
)
public class ConfigurationController implements ConfigurationApi {
private static final Logger logger = LoggerFactory.getLogger(ConfigurationController.class);
public static final String API_NAME = "Management of configuration";
public static final String API_DESCRIPTION = "";
private final ConfigurationFile configurationFile;
private final ApplicationConfig applicationConfig;
ConfigurationController(@Autowired ConfigurationFile configurationFile,
@Autowired ApplicationConfig applicationConfig) {
this.configurationFile = configurationFile;
this.applicationConfig = applicationConfig;
}
private static Gson gson = new GsonBuilder() //
.create(); //
@Override
public Mono<ResponseEntity<Object>> putConfiguration(final Mono<Object> configuration,
final ServerWebExchange exchange) {
return configuration
.flatMap(configObject -> {
try {
String configAsString = gson.toJson(configObject);
JsonObject configJson = JsonParser.parseString(configAsString).getAsJsonObject();
ApplicationConfigParser configParser = new ApplicationConfigParser(applicationConfig);
configParser.parse(configJson);
configurationFile.writeFile(configJson);
logger.info("Configuration changed through REST call.");
return Mono.just(new ResponseEntity<>(HttpStatus.OK));
} catch (IOException ioe) {
logger.warn("Configuration file not written, {}.", ioe.getMessage());
return ErrorResponse.createMono("Internal error when writing the configuration.",
HttpStatus.INTERNAL_SERVER_ERROR);
} catch (Exception e) {
return ErrorResponse.createMono(e, HttpStatus.BAD_REQUEST);
}
})
.onErrorResume(error -> {
return ErrorResponse.createMono(error.getMessage(), HttpStatus.INTERNAL_SERVER_ERROR);
});
}
@Override
public Mono<ResponseEntity<Object>> getConfiguration(final ServerWebExchange exchange) {
try {
Optional<JsonObject> rootObject = configurationFile.readFile();
if (rootObject.isPresent()) {
return Mono.just(new ResponseEntity<>(rootObject.get().toString(), HttpStatus.OK));
} else {
return ErrorResponse.createMono("File does not exist", HttpStatus.NOT_FOUND);
}
} catch (Exception e) {
return ErrorResponse.createMono(e, HttpStatus.INTERNAL_SERVER_ERROR);
}
}
}
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