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/*-
* ============LICENSE_START=======================================================
* ONAP : DCAE
* ================================================================================
* Copyright 2018-2019 TechMahindra
* Copyright (C) 2022 Huawei Technologies Co., Ltd.
* ================================================================================
* 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.universalvesadapter.service;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.time.Duration;
import java.util.HashMap;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Set;
import org.apache.http.HttpResponse;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.HttpClientBuilder;
import org.json.simple.JSONArray;
import org.json.simple.JSONObject;
import org.onap.dcaegen2.services.sdk.rest.services.cbs.client.api.CbsClientFactory;
import org.onap.dcaegen2.services.sdk.rest.services.cbs.client.api.CbsRequests;
import org.onap.dcaegen2.services.sdk.rest.services.cbs.client.model.CbsRequest;
import org.onap.dcaegen2.services.sdk.rest.services.cbs.client.model.CbsClientConfiguration;
import org.onap.dcaegen2.services.sdk.rest.services.model.logging.RequestDiagnosticContext;
import org.onap.universalvesadapter.utils.CollectorConfigPropertyRetrieval;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.boot.CommandLineRunner;
import org.springframework.boot.SpringApplication;
import org.springframework.context.ApplicationContext;
import org.springframework.core.Ordered;
import org.springframework.stereotype.Component;
// AdapterInitializer
@Component
public class VESAdapterInitializer implements CommandLineRunner, Ordered {
private static final Logger debugLogger = LoggerFactory.getLogger("debugLogger");
private static final Logger errorLogger = LoggerFactory.getLogger("errorLogger");
@Value("${defaultConfigFilelocation}")
String defaultConfigFilelocation;
@Value("${server.port}")
String serverPort;
private static Map<String, String> mappingFiles = new HashMap<String, String>();
// Generate RequestID and InvocationID which will be used when logging and in
// HTTP requests
final RequestDiagnosticContext diagnosticContext = RequestDiagnosticContext.create();
final CbsRequest request = CbsRequests.getConfiguration(diagnosticContext);
// Read necessary properties from the environment
final CbsClientConfiguration env = CbsClientConfiguration.fromEnvironment();
// Polling properties :
final Duration initialDelay = Duration.ofSeconds(5);
final Duration period = Duration.ofMinutes(1);
@Autowired
private ApplicationContext applicationContext;
@Override
public void run(String... args) throws Exception {
debugLogger.info("The Default Config file Location:" + defaultConfigFilelocation.trim());
if (ClassLoader.getSystemResource(defaultConfigFilelocation.trim()) == null) {
errorLogger.error("Default Config file " + defaultConfigFilelocation.trim() + " is missing");
System.exit(SpringApplication.exit(applicationContext, () -> {
errorLogger.error("Application stoped due to missing default Config file");
return -1;
}));
}
// Create the client and use it to get the configuration
CbsClientFactory.createCbsClient(env).flatMapMany(cbsClient -> cbsClient.updates(request, initialDelay, period))
.subscribe(jsonObject -> {
readJsonToMap(defaultConfigFilelocation);
debugLogger.info("Triggering controller's start url ");
fetchResultFromDestination("http://localhost:" + serverPort + "/start");
}, throwable -> {
debugLogger.warn("Cannot Connect", throwable);
});
}
/**
* gets the configuration details from JSON an puts those in the mapping data structure for further
* processing.
*
* @param configFile: String
*/
private void readJsonToMap(String configFile) {
try {
JSONArray collectorArray = CollectorConfigPropertyRetrieval.collectorConfigArray(configFile);
for (int i = 0; i < collectorArray.size(); i++) {
JSONObject obj2 = (JSONObject) collectorArray.get(i);
if (obj2.containsKey("mapping-files")) {
JSONArray a1 = (JSONArray) obj2.get("mapping-files");
for (int j = 0; j < a1.size(); j++) {
JSONObject obj3 = (JSONObject) a1.get(j);
Set<Entry<String, String>> set = obj3.entrySet();
for (Entry<String, String> entry : set) {
mappingFiles.put(entry.getKey(), entry.getValue());
}
}
}
}
} catch (Exception e) {
// e.printStackTrace();
errorLogger.error(
" Class VESAdapterInitializer: method readJsonToMap: Exception occured while reading Collector config file cause: ",
e.getCause());
}
}
public static Map<String, String> getMappingFiles() {
return mappingFiles;
}
public static void setMappingFiles(Map<String, String> mappingFiles) {
VESAdapterInitializer.mappingFiles = mappingFiles;
}
@Override
public int getOrder() {
return 0;
}
private static String fetchResultFromDestination(String url) {
debugLogger.debug("VESAdapterInitializer:: fetchResultFromDestination :: START");
String line = "";
StringBuffer sb = new StringBuffer();
try {
HttpClient client = HttpClientBuilder.create().build();
HttpGet request = new HttpGet(url);
HttpResponse response = client.execute(request);
BufferedReader rd = new BufferedReader(new InputStreamReader(response.getEntity().getContent()));
while ((line = rd.readLine()) != null) {
sb.append(line);
sb.append('\n');
}
} catch (ClientProtocolException e) {
debugLogger.debug("VESAdapterInitializer:: fetchResultFromDestination :: ClientProtocolException thrown "
+ e.getMessage());
} catch (UnsupportedOperationException e) {
debugLogger
.debug("VESAdapterInitializer:: fetchResultFromDestination :: UnsupportedOperationException thrown "
+ e.getMessage());
} catch (IOException e) {
debugLogger.debug(
"VESAdapterInitializer:: fetchResultFromDestination :: IOException thrown " + e.getMessage());
}
debugLogger.debug("VESAdapterInitializer:: fetchResultFromDestination :: END");
return sb.toString();
}
}
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