Revision 7783
Added by Jing Tao almost 11 years ago
| ApplicationController.java | ||
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package edu.ucsb.nceas.metacat.index; |
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import edu.ucsb.nceas.metacat.common.SolrServerFactory; |
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import edu.ucsb.nceas.metacat.common.query.EnabledQueryEngines; |
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import java.io.File; |
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import java.util.ArrayList; |
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import java.util.List; |
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import javax.servlet.ServletConfig; |
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import javax.servlet.ServletException; |
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import org.apache.commons.configuration.ConfigurationException; |
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import org.apache.commons.logging.Log; |
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import org.apache.commons.logging.LogFactory; |
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import org.apache.solr.client.solrj.SolrServer; |
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import org.dataone.configuration.Settings; |
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import org.dataone.service.exceptions.ServiceFailure; |
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import org.springframework.context.ApplicationContext; |
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import org.springframework.context.support.FileSystemXmlApplicationContext; |
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import com.hazelcast.client.HazelcastClient; |
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/** |
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* The start class of the index. |
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* @author tao |
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private List<SystemMetadataEventListener> sysmetaListeners = new ArrayList<SystemMetadataEventListener>(); |
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private static ApplicationContext context = null; |
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private String springConfigFile = "src/main/resources/index-processor-context.xml"; |
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private String metacatPropertiesFile = null; |
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private static int waitingTime = IndexGenerator.WAITTIME; |
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private static int maxAttempts = IndexGenerator.MAXWAITNUMBER; |
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Log log = LogFactory.getLog(ApplicationController.class); |
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/** |
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* Constructor |
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*/ |
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public ApplicationController () throws Exception {
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/*public ApplicationController () throws Exception {
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init(); |
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} |
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}*/
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/** |
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* Set the Spring configuration file.
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* Set the Spring configuration file and metacat.properties file
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* @param springConfigFile the path of the Spring configuration file |
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* @param metacatPropertyFile the path of the metacat.properties file |
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*/ |
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public ApplicationController(String springConfigFile) throws Exception {
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public ApplicationController(String springConfigFile, String metacatPropertiesFile) throws Exception {
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this.springConfigFile = springConfigFile; |
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init(); |
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this.metacatPropertiesFile = metacatPropertiesFile; |
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//init(); |
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} |
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/** |
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* Loads the metacat.prioerties into D1 Settings utility |
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* this gives us access to all metacat properties as well as |
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* overriding any properties as needed. |
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* Note: in the junit test, we are using the test.properties rather than this properties file. |
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* |
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* Makes sure shared Hazelcast configuration file location is set |
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*/ |
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private void initializeSharedConfiguration() {
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int times = 0; |
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while(true) {
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File metacatProperties = new File(metacatPropertiesFile); |
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if(metacatProperties.exists()) {
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break; |
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} else {
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try {
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Thread.sleep(waitingTime); |
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} catch (InterruptedException e) {
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// TODO Auto-generated catch block |
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e.printStackTrace(); |
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} |
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} |
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times++; |
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if(times >= maxAttempts) {
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log.error("ApplicationController.initialzeSharedConfiguration - MetacatIndex wait a while and still can't find the metacat.properties file.");
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break;//we still break the while loop and continue. But the properties in the metacat.properties can't be read. |
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} |
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} |
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try {
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Settings.getConfiguration(); |
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Settings.augmentConfiguration(metacatPropertiesFile); |
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} catch (ConfigurationException e) {
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log.error("Could not initialize shared Metacat properties. " + e.getMessage(), e);
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} |
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// make sure hazelcast configuration is defined so that |
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String hzConfigFileName = Settings.getConfiguration().getString("dataone.hazelcast.configFilePath");
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if (hzConfigFileName == null) {
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// use default metacat hazelcast.xml file in metacat deployment |
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hzConfigFileName = |
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Settings.getConfiguration().getString("application.deployDir") +
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"/" + |
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Settings.getConfiguration().getString("application.context") +
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"/WEB-INF/hazelcast.xml"; |
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// set it for other parts of the code |
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Settings.getConfiguration().setProperty("dataone.hazelcast.configFilePath", hzConfigFileName);
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//set data.hazelcast.location.clientconfig. This property will be used in d1_cn_index_processor module. |
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//if we don't set this property, d1_cn_index_processor will use the default location /etc/dataone/storage. |
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Settings.getConfiguration().setProperty("dataone.hazelcast.location.clientconfig", hzConfigFileName);
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} |
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} |
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/** |
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* Initialize the list of the SolrIndex objects from the configuration file. |
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* Set the SolrServer implementation using the factory. |
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* Start listening for events on Hazelcast |
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*/ |
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private void init() throws Exception {
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public void initialize() throws Exception {
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context = getContext(); |
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solrIndexes = (List<SolrIndex>) context.getBean(SOLRINDEXES); |
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|
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} |
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/** |
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* Start the system metadata listener |
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* Start the system metadata listener. Prior to call this method, we should call |
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* initialize method first. |
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*/ |
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public void startSysmetaListener() {
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if(sysmetaListeners != null) {
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} |
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/** |
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* It will start system metadata event listener first. Then to generate indexes for those haven't been indexed in another thread. |
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* It will initialize the shared metacat.properties and the SolrIndex, then start system metadata event listener and |
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* generate indexes for those haven't been indexed in another thread. This method is for the MetacatIndexServlet. |
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* The reason we put those methods (init, startSysmetaListener, startIndex)in the run (another thread) is that the waiting readiness of the metacat wouldn't |
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* block the start of the servlet container (e.g., tomcat). |
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*/ |
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public void run() {
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startSysmetaListener(); |
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startIndex();//it will create another thread. |
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initializeSharedConfiguration(); |
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try {
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boolean isSolrEnabled = true; |
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try {
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isSolrEnabled = EnabledQueryEngines.getInstance().isEnabled(EnabledQueryEngines.SOLRENGINE); |
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} catch (Exception e) {
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log.error("ApplicationController.run - Metacat-index can't read the enabled query engine list from metacat.properties :"+e.getMessage());
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} |
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//if the solr query engine is disabled, we stop here. |
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if(!isSolrEnabled) {
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return; |
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} |
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initialize(); |
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startSysmetaListener(); |
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startIndex();//it will create another thread. |
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} catch (Exception e) {
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log.error("Application.run "+e.getMessage());
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} |
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} |
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} |
Also available in: Unified diff
Add code to check if the metacat.properties is available.