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/*
* ============LICENSE_START=======================================================
* DCAEGEN2-SERVICES-SDK
* ================================================================================
* Copyright (C) 2021 Nokia. All rights reserved.
* Copyright (C) 2021 Wipro Limited.
* ================================================================================
* 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.services.sdk.rest.services.cbs.client.impl;
import com.google.gson.Gson;
import com.google.gson.GsonBuilder;
import com.google.gson.JsonObject;
import java.util.LinkedHashMap;
import org.jetbrains.annotations.NotNull;
import org.onap.dcaegen2.services.sdk.rest.services.cbs.client.api.CbsClient;
import org.onap.dcaegen2.services.sdk.rest.services.cbs.client.model.CbsRequest;
import org.onap.dcaegen2.services.sdk.services.common.FileReader;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.yaml.snakeyaml.Yaml;
import reactor.core.publisher.Mono;
public class CbsClientConfigMap implements CbsClient {
private static final Logger LOGGER = LoggerFactory.getLogger(CbsClientConfigMap.class);
private final String configMapFilePath;
private String policySyncFilePath = "";
private String appName = "";
public CbsClientConfigMap(String configMapFilePath) {
this.configMapFilePath = configMapFilePath;
}
public CbsClientConfigMap(String configMapFilePath, String policySyncFilePath, String appName) {
this.configMapFilePath = configMapFilePath;
this.policySyncFilePath = policySyncFilePath;
this.appName = appName;
}
@Override
public @NotNull Mono<JsonObject> get(CbsRequest request) {
Mono<JsonObject> configJsonMono =
Mono.just(this.loadConfigMapFile()).map(CbsClientEnvironmentParsing::processEnvironmentVariables);
if (this.shouldReadPolicySyncFile(request)) {
return configJsonMono.map(this::loadPolicySyncFile).doOnNext(this::logConfigMapOutput);
}
return configJsonMono.doOnNext(this::logConfigMapOutput);
}
public boolean verifyConfigMapFile() {
try {
LOGGER.info("Trying to load configuration from configMap file: {}", configMapFilePath);
this.loadConfigMapFile().isJsonObject();
return true;
} catch (Exception ex) {
this.logConfigMapError(ex);
return false;
}
}
private JsonObject loadConfigMapFile() {
Gson gson = new GsonBuilder().create();
return gson.fromJson(gson.toJson(this.loadYamlConfigMapFile(), LinkedHashMap.class), JsonObject.class);
}
private Object loadYamlConfigMapFile() {
return new Yaml().load(new FileReader(configMapFilePath).getContent());
}
private void logConfigMapOutput(JsonObject jsonObject) {
LOGGER.info("Got successful output from ConfigMap file");
LOGGER.debug("ConfigMap output: {}", jsonObject);
}
private void logConfigMapError(Exception ex) {
LOGGER.error("Error loading configuration from configMap file: {}", ex.getMessage());
}
private boolean shouldReadPolicySyncFile(CbsRequest request) {
try {
return request.requestPath()
.getForService(appName)
.contains("service_component_all");
} catch (Exception ex) {
LOGGER.error("Error finding requestPath", ex.getMessage());
return false;
}
}
private JsonObject loadPolicySyncFile(JsonObject configJsonObject) {
try {
if (new FileReader(policySyncFilePath).doesFileExists()) {
LOGGER.info("PolicySync file is present");
Gson gson = new GsonBuilder().create();
JsonObject policyJsonObject = gson.fromJson(this.loadJsonStringPolicySyncFile(), JsonObject.class);
policyJsonObject.add("config", configJsonObject);
return policyJsonObject;
}
LOGGER.info("PolicySync file does not exist");
JsonObject policyJsonObject = new JsonObject();
policyJsonObject.add("config", configJsonObject);
return policyJsonObject;
} catch (Exception ex) {
LOGGER.error("PolicySync file does not contain a valid json");
JsonObject policyJsonObject = new JsonObject();
policyJsonObject.add("config", configJsonObject);
return policyJsonObject;
}
}
private String loadJsonStringPolicySyncFile() {
return new FileReader(policySyncFilePath).getContent();
}
}
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