Java tutorial
package com.navercorp.pinpoint.web.batch; import java.util.ArrayList; import java.util.Collections; import java.util.List; import java.util.Properties; import org.apache.commons.lang3.StringUtils; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import org.springframework.beans.factory.InitializingBean; import org.springframework.context.annotation.ConditionContext; import org.springframework.context.annotation.Conditional; import org.springframework.context.annotation.Configuration; import org.springframework.context.annotation.ConfigurationCondition; import org.springframework.context.annotation.ImportResource; /* * Copyright 2014 NAVER Corp. * * 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. */ import org.springframework.core.io.Resource; import org.springframework.core.type.AnnotatedTypeMetadata; /** * @author minwoo.jung<minwoo.jung@navercorp.com> * */ @Configuration @Conditional(BatchConfiguration.Condition.class) @ImportResource("classpath:/batch/applicationContext-batch-schedule.xml") public class BatchConfiguration implements InitializingBean { private static final Logger logger = LoggerFactory.getLogger(BatchConfiguration.class); private Properties properties; private List<String> flinkServerList; private String batchServerIp; public void setProperties(Properties properties) { this.properties = properties; } @Override public void afterPropertiesSet() throws Exception { readPropertyValues(this.properties); } private void readPropertyValues(Properties properties) { logger.info("pinpoint-batch.properties read."); batchServerIp = readString(properties, "batch.server.ip", null); String[] flinkServers = StringUtils.split(readString(properties, "batch.flink.server", null), ","); if (flinkServers == null) { this.flinkServerList = Collections.emptyList(); } else { this.flinkServerList = new ArrayList<>(flinkServers.length); for (String flinkServer : flinkServers) { if (!StringUtils.isEmpty(flinkServer)) { this.flinkServerList.add(StringUtils.trim(flinkServer)); } } } } private String readString(Properties properties, String propertyName, String defaultValue) { final String result = properties.getProperty(propertyName, defaultValue); if (logger.isInfoEnabled()) { logger.info("{}={}", propertyName, result); } return result; } public String getBatchServerIp() { return batchServerIp; } static class Condition implements ConfigurationCondition { @Override public ConfigurationPhase getConfigurationPhase() { return ConfigurationPhase.PARSE_CONFIGURATION; } @Override public boolean matches(ConditionContext context, AnnotatedTypeMetadata metadata) { Properties properties = new Properties(); Resource resource = context.getResourceLoader().getResource("classpath:/batch.properties"); try { properties.load(resource.getInputStream()); final String enable = properties.getProperty("batch.enable"); if (enable == null) { return false; } return Boolean.valueOf(enable.trim()); } catch (Exception e) { logger.error("Exception occurred while batch configuration", e); } return false; } } public List<String> getFlinkServerList() { return flinkServerList; } }