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/*
* ============LICENSE_START=======================================================
* org.onap.dcae
* ================================================================================
* Copyright (c) 2020 AT&T Intellectual Property. 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.dcaegen2.platform.mod.web.service.policymodel;
import io.netty.handler.ssl.SslContext;
import io.netty.handler.ssl.SslContextBuilder;
import io.netty.handler.ssl.util.InsecureTrustManagerFactory;
import lombok.Setter;
import lombok.extern.slf4j.Slf4j;
import org.onap.dcaegen2.platform.mod.model.exceptions.policymodel.PolicyModelDistributionEnvNotFoundException;
import org.onap.dcaegen2.platform.mod.model.policymodel.DistributionInfo;
import org.onap.dcaegen2.platform.mod.model.policymodel.PolicyModel;
import org.onap.dcaegen2.platform.mod.model.policymodel.PolicyModelDistributionEnv;
import org.onap.dcaegen2.platform.mod.model.policymodel.PolicyModelStatus;
import org.onap.dcaegen2.platform.mod.util.PolicyModelUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.http.HttpHeaders;
import org.springframework.http.HttpMethod;
import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.http.client.reactive.ReactorClientHttpConnector;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.util.Base64Utils;
import org.springframework.web.client.RestTemplate;
import org.springframework.web.reactive.function.client.ClientResponse;
import org.springframework.web.reactive.function.client.ExchangeFilterFunctions;
import org.springframework.web.reactive.function.client.WebClient;
import reactor.core.publisher.Mono;
import reactor.netty.http.client.HttpClient;
import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.atomic.AtomicBoolean;
/**
* Policy Model Service implementation
*/
@Service
@Setter
@Slf4j
public class PolicyModelDistributionServiceImpl implements PolicyModelDistributionService {
@Autowired
PolicyModelServiceImpl policyModelServiceImpl;
@Autowired
PolicyModelGateway policyModelGateway;
@Autowired
PolicyModelUtils policyModelUtils;
/**
* Gets the Policy Model Distribution by Policy Model ID
* @param env
* @param modelId
* @return
*/
@Override
public ResponseEntity getPolicyModelDistributionById(String env,String modelId) {
String responseBody = null;
HttpStatus httpStatus;
String url = policyModelUtils.getPolicyEngineURL(env);
PolicyModel policyModel = policyModelServiceImpl.getPolicyModelById(modelId);
try{
WebClient webClient = policyModelUtils.getWebClient(env);
WebClient.RequestHeadersSpec<?> requestHeadersSpec = webClient.method(HttpMethod.GET).uri(url + "/" + policyModel.getName());
httpStatus = requestHeadersSpec.exchange().map(response -> response.statusCode()).block();
if (httpStatus.is2xxSuccessful()) {
responseBody = requestHeadersSpec.retrieve().bodyToMono(String.class).block();
} else if(httpStatus.is4xxClientError()){
if(httpStatus.value() == 401) {
responseBody = "Authentication Error";
} else if(httpStatus.value() == 403) {
responseBody = "Authorization Error";
} else if(httpStatus.value() == 404) {
responseBody = "Resource Not Found";
}
} else if(httpStatus.is5xxServerError()){
responseBody = "Internal Server Error";
}
else {
responseBody = "Problem in getting the Policy Model.";
}
}catch(Exception ex){
log.error("Problem in getting the Policy Model.");
log.error("error: ", ex);
httpStatus = HttpStatus.INTERNAL_SERVER_ERROR;
responseBody = "Problem in getting the Policy Model.";
}
return ResponseEntity.status(httpStatus).body(responseBody);
}
/**
* Distributes a Policy Model
* @param env
* @param modelId
* @return
*/
@Override
@Transactional
public ResponseEntity distributePolicyModel(String env, String modelId) {
String responseBody = null;
HttpStatus httpStatus;
String url = policyModelUtils.getPolicyEngineURL(env);
PolicyModel policyModel = policyModelServiceImpl.getPolicyModelById(modelId);
String content = policyModel.getContent();
DistributionInfo distributionInfo = DistributionInfo.builder().url(env).build();
try{
WebClient webClient = policyModelUtils.getWebClient(env);
WebClient.RequestHeadersSpec<?> requestHeadersSpec = webClient.method(HttpMethod.POST).uri(url).bodyValue(content.getBytes());
httpStatus = requestHeadersSpec.exchange().map(response -> response.statusCode()).block();
if (httpStatus.is2xxSuccessful()) {
distributionInfo.setStatus(PolicyModelStatus.SUCCESS);
responseBody = requestHeadersSpec.retrieve().bodyToMono(String.class).block();
} else if(httpStatus.is4xxClientError()){
distributionInfo.setStatus(PolicyModelStatus.FAILED);
if(httpStatus.value() == 400) {
responseBody = "Invalid Body";
} else if(httpStatus.value() == 401) {
responseBody = "Authentication Error";
} else if(httpStatus.value() == 403) {
responseBody = "Authorization Error";
} else if(httpStatus.value() == 406) {
responseBody = "Not Acceptable Version";
} else if(httpStatus.value() == 415) {
responseBody = "UnSupported Media Type";
}
} else if(httpStatus.is5xxServerError()){
responseBody = "Internal Server Error";
distributionInfo.setStatus(PolicyModelStatus.FAILED);
}
else {
distributionInfo.setStatus(PolicyModelStatus.FAILED);
responseBody = "Problem in Distributing the Policy Model.";
}
}catch(Exception ex){
log.error("Problem in Distributing the Policy Model.");
log.error("error: ", ex);
distributionInfo.setStatus(PolicyModelStatus.FAILED);
httpStatus = HttpStatus.INTERNAL_SERVER_ERROR;
responseBody = "Problem in Distributing the Policy Model.";
}
List<DistributionInfo> distributionInfos = new ArrayList<>();
distributionInfos.add(distributionInfo);
policyModel.setDistributionInfo(distributionInfos);
policyModelGateway.save(policyModel);
return ResponseEntity.status(httpStatus).body(responseBody);
}
}
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