154 lines
4.1 KiB
Java
154 lines
4.1 KiB
Java
package org.gcube.dataaccess.algorithms.drmalgorithms;
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import java.util.ArrayList;
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import java.util.LinkedHashMap;
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import java.util.List;
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import java.util.UUID;
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import org.gcube.contentmanagement.lexicalmatcher.utils.AnalysisLogger;
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import org.gcube.dataaccess.databases.access.DatabasesDiscoverer;
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import org.gcube.dataaccess.databases.resources.DBResource;
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import org.gcube.dataanalysis.ecoengine.datatypes.PrimitiveType;
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import org.gcube.dataanalysis.ecoengine.datatypes.StatisticalType;
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import org.gcube.dataanalysis.ecoengine.datatypes.enumtypes.PrimitiveTypes;
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import org.gcube.dataanalysis.ecoengine.interfaces.StandardLocalInfraAlgorithm;
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import org.gcube.resources.discovery.client.api.DiscoveryException;
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import org.gcube.resources.discovery.client.api.InvalidResultException;
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/** Class that allows to retrieve a list of database resources */
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public class ListNames extends StandardLocalInfraAlgorithm {
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private static final String RESOURCE_NAME = "Resource Name ";
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private LinkedHashMap<String, StatisticalType> map = new LinkedHashMap<String, StatisticalType>();
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@Override
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public void init() throws Exception {
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AnalysisLogger.getLogger().debug("In ListNames->Initialization");
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String scope = config.getGcubeScope();
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AnalysisLogger.getLogger().debug(
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"In ListNames->scope set by config object: " + scope);
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}
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@Override
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public String getDescription() {
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// add a simple description for the algorithm
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return "Algorithm that allows to view the available database resources names in the Infrastructure";
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}
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@Override
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protected void process() throws Exception {
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AnalysisLogger.getLogger().debug("In ListNames->Processing");
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try {
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// retrieve resources
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List<DBResource> resources = this.retrieveResources();
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// add the name to the list
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// list that contains the resource's names
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ArrayList<String> listnames = new ArrayList<String>();
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for (int i = 0; i < resources.size(); i++) {
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String name = RESOURCE_NAME + (i + 1);
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PrimitiveType val = new PrimitiveType(String.class.getName(),
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null, PrimitiveTypes.STRING, name, name);
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AnalysisLogger.getLogger().debug(
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"In ListNames->Resource's name: "
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+ resources.get(i).getResourceName());
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listnames.add(resources.get(i).getResourceName());
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val.setContent(listnames.get(i));
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map.put(name, val);
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}
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AnalysisLogger.getLogger().debug(
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"In ListNames->Output Map Size: " + map.size());
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} catch (IllegalStateException e) {
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// e.printStackTrace();
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AnalysisLogger.getLogger().debug(
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"In ListNames-> ERROR " + e.getMessage());
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throw e;
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} catch (DiscoveryException e1) {
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// e1.printStackTrace();
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AnalysisLogger.getLogger().debug(
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"In ListNames-> ERROR " + e1.getMessage());
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throw e1;
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} catch (InvalidResultException e2) {
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// e2.printStackTrace();
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AnalysisLogger.getLogger().debug(
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"In ListNames-> ERROR " + e2.getMessage());
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throw e2;
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}
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}
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@Override
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protected void setInputParameters() {
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// AnalysisLogger.getLogger().debug("In ListNames->setting inputs");
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addStringInput("MaxNumber", "Max Number of Resources (-1 for all)",
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"-1");
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}
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@Override
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public void shutdown() {
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AnalysisLogger.getLogger().debug("In ListNames->Shutdown");
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}
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@Override
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public StatisticalType getOutput() {
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AnalysisLogger.getLogger().debug("In ListNames->retrieving outputs");
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// generate a primitive type for the collection
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PrimitiveType output = new PrimitiveType(LinkedHashMap.class.getName(),
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map, PrimitiveTypes.MAP, "ResultsMap" + UUID.randomUUID(),
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"Results Map");
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return output;
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}
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private List<DBResource> retrieveResources() throws IllegalStateException,
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DiscoveryException, InvalidResultException {
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AnalysisLogger.getLogger().debug("In ListNames->retrieving resources");
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List<DBResource> resources = new ArrayList<DBResource>();
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// retrieve the resources
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DatabasesDiscoverer discovery = new DatabasesDiscoverer();
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resources = discovery.discover();
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AnalysisLogger.getLogger().debug(
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"In ListNames->number of database resources: "
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+ resources.size());
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return resources;
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}
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}
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