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6589
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leinfelder
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package edu.ucsb.nceas.metacat.dataone.hazelcast;
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import java.util.Collection;
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import java.util.Collections;
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import java.util.HashSet;
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import java.util.Hashtable;
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import java.util.List;
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import java.util.Map;
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import java.util.Set;
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import org.dataone.service.types.v1.Identifier;
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import com.hazelcast.core.MapLoader;
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import edu.ucsb.nceas.metacat.IdentifierManager;
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import edu.ucsb.nceas.metacat.McdbDocNotFoundException;
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import edu.ucsb.nceas.metacat.properties.PropertyService;
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import edu.ucsb.nceas.metacat.shared.ServiceException;
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import edu.ucsb.nceas.utilities.FileUtil;
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import edu.ucsb.nceas.utilities.PropertyNotFoundException;
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/**
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* MapLoader implementation for a hazelcast hzObjectPath. This class is called
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* when the ObjectPathMap needs to refresh against the persistent datastore.
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* The use case for this class is to communicate the filepath between JVMs on
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* the same machine, specifically between the metacat instance and the d1_indexer.
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*
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* d1_indexer will get Identifiers from elsewhere, but use this class to get
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* the paths to their associated files. The getAllKeys() method can (and should)
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* return null in a live setting. For unit testing, it may be useful to use
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* it to get some
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*
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* @author rnahf
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*
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*/
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public class MockObjectPathMap implements MapLoader<Identifier, String> {
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private static IdentifierManager im;
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private static String dataPath;
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private static String metadataPath;
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/**
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* creates an ObjectPathMap
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*/
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public MockObjectPathMap() {
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// try {
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// PropertyService ps = PropertyService.getInstance();
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// dataPath = PropertyService.getProperty("application.datafilepath");
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// metadataPath = PropertyService.getProperty("application.documentfilepath");
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// } catch (PropertyNotFoundException e) {
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// // TODO Autogenerated catch block
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// e.printStackTrace();
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// } catch (ServiceException e) {
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// // TODO Autogenerated catch block
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// e.printStackTrace();
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// }
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dataPath = "/data/";
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metadataPath = "/metadata/";
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im = IdentifierManager.getInstance();
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}
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/*
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* Metadata is stored in a different place on the filesystem than
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* the data. The doctype value for metadata can vary, but for data
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* is always 'BIN', so using a simple ifthenelse to separate
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*/
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private String pathToDocid(String localid) throws McdbDocNotFoundException {
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return "/some/path/" + localid;
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// Hashtable<String, Object> ht = im.getDocumentInfo(localid);
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// if (ht.get("doctype").equals("BIN")) {
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// return dataPath + FileUtil.getFS() + localid;
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// } else {
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// return metadataPath + FileUtil.getFS() + localid;
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// }
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}
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/**
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* Implementation of hazelcast MapLoader interface method.
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* For the provided Identifier (as key), returns the path to the
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* document on the local filesystem. Returns null if it can't
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* create the path.
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*/
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@Override
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public String load(Identifier key)
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{
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String docid = null;
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String path = null;
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// try {
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// docid = im.getLocalId(key.getValue());
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// path = pathToDocid(docid);
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// } catch (McdbDocNotFoundException e) {
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// // TODO Autogenerated catch block
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// e.printStackTrace();
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// return null;
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// }
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if (key.getValue().startsWith("NO_CREATE")) {
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return null;
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}
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path = "/path/" + key.getValue();
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return path;
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}
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/**
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* Implementation of hazelcast MapLoader interface method. This method loads
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* mappings for all Identifiers in the parameters. Any Identifier not found
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* is not included in the resulting map.
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*/
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@Override
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public Map<Identifier, String> loadAll(Collection<Identifier> identifiers) {
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Hashtable<Identifier,String> map = new Hashtable<Identifier,String>();
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for (Identifier id : identifiers) {
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map.put(id, "/path/" + id.getValue());
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// try {
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// String docid = im.getLocalId(id.getValue());
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// map.put(id, pathToDocid(docid));
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//
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// } catch (McdbDocNotFoundException e) {
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// // TODO should the map load an empty path instead of
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// // leaving out the entire entry?
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// e.printStackTrace();
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// }
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}
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return map;
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}
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/**
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* Return the full set of guids in the local metacat repository as
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* dataone Identifiers.
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*
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* (Hazelcast allows avoiding preloading by returning NULL, so consider
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* reimplementing if that serves the purpose of this class better)
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*/
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@Override
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public Set<Identifier> loadAllKeys()
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{
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// List<String> guids = im.getAllGUIDs();
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//
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Set<Identifier> set = Collections.synchronizedSet(new HashSet<Identifier>());
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// for (String guid : guids) {
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// Identifier id = new Identifier();
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// id.setValue(guid);
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// set.add(id);
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// }
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for (int i=1; i< 100; i++) {
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Identifier id = new Identifier();
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id.setValue("testID." + i);
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set.add(id);
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}
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return set;
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}
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}
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