content: /*
   * Copyright 2013-2023 the original author or authors.
   *
   * 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
   *
   *      https://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.
   */
  
  package com.alibaba.cloud.nacos.client;
  
  import java.util.Collections;
  import java.util.Date;
  import java.util.List;
  
  import com.alibaba.cloud.nacos.NacosPropertySourceRepository;
  import com.alibaba.cloud.nacos.parser.NacosDataParserHandler;
  import com.alibaba.cloud.nacos.refresh.NacosSnapshotConfigManager;
  import com.alibaba.cloud.nacos.utils.StringUtils;
  import com.alibaba.nacos.api.config.ConfigService;
  import com.alibaba.nacos.api.exception.NacosException;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  import org.springframework.core.env.PropertySource;
  
  /**
   * @author xiaojing
   * @author pbting
   */
  public class NacosPropertySourceBuilder {
  
  	private static final Logger log = LoggerFactory
  			.getLogger(NacosPropertySourceBuilder.class);
  
  	private ConfigService configService;
  
  	private long timeout;
  
  	public NacosPropertySourceBuilder(ConfigService configService, long timeout) {
  		this.configService = configService;
  		this.timeout = timeout;
  	}
  
  	public long getTimeout() {
  		return timeout;
  	}
  
  	public void setTimeout(long timeout) {
  		this.timeout = timeout;
  	}
  
  	public ConfigService getConfigService() {
  		return configService;
  	}
  
  	public void setConfigService(ConfigService configService) {
  		this.configService = configService;
  	}
  
  	/**
  	 * @param dataId Nacos dataId
  	 * @param group Nacos group
  	 */
  	public NacosPropertySource build(String dataId, String group, String fileExtension,
  			boolean isRefreshable) {
  		List<PropertySource<?>> propertySources = loadNacosData(dataId, group,
  				fileExtension);
  		NacosPropertySource nacosPropertySource = new NacosPropertySource(propertySources,
  				group, dataId, new Date(), isRefreshable);
  		NacosPropertySourceRepository.collectNacosPropertySource(nacosPropertySource);
  		return nacosPropertySource;
  	}
  
  	private List<PropertySource<?>> loadNacosData(String dataId, String group,
  			String fileExtension) {
  		String data = null;
  		try {
  			String configSnapshot = NacosSnapshotConfigManager.getAndRemoveConfigSnapshot(dataId, group);
  			if (StringUtils.isEmpty(configSnapshot)) {
  				log.debug("get config from nacos, dataId: {}, group: {}", dataId, group);
  				data = configService.getConfig(dataId, group, timeout);
  			}
  			else {
  				log.debug("get config from memory snapshot, dataId: {}, group: {}",
  						dataId, group);
  				data = configSnapshot;
  			}
  			if (StringUtils.isEmpty(data)) {
  				log.warn(
  						"Ignore the empty nacos configuration and get it based on dataId[{}] & group[{}]",
  						dataId, group);
  				return Collections.emptyList();
  			}
  			if (log.isDebugEnabled()) {
  				log.debug(String.format(
  						"Loading nacos data, dataId: '%s', group: '%s', data: %s", dataId,
  						group, data));
  			}
  			return NacosDataParserHandler.getInstance().parseNacosData(dataId, data,
  					fileExtension);
  		}
  		catch (NacosException e) {
  			log.error("get data from Nacos error,dataId:{} ", dataId, e);
  		}
  		catch (Exception e) {
  			log.error("parse data from Nacos error,dataId:{},data:{}", dataId, data, e);
  		}
  		return Collections.emptyList();
  	}
  
  }
  