D-Net

package eu.dnetlib.msro.workflows.hadoop.hbase;

import java.io.IOException;

import java.util.Map;

import org.apache.commons.io.IOUtils;

import org.apache.commons.logging.Log;

import org.apache.commons.logging.LogFactory;

import org.springframework.beans.factory.annotation.Required;

import com.googlecode.sarasvati.Engine;

import com.googlecode.sarasvati.NodeToken;

import com.googlecode.sarasvati.env.Env;

import eu.dnetlib.data.hadoop.rmi.HadoopBlackboardActions;

import eu.dnetlib.data.hadoop.rmi.HadoopService;

import eu.dnetlib.enabling.resultset.rmi.ResultSetException;

import eu.dnetlib.enabling.tools.blackboard.BlackboardJob;

import eu.dnetlib.miscutils.functional.xml.DnetXsltFunctions;

import eu.dnetlib.msro.workflows.nodes.BlackboardJobNode;

import eu.dnetlib.msro.workflows.nodes.ProgressJobNode;

import eu.dnetlib.msro.workflows.nodes.blackboard.BlackboardWorkflowJobListener;

import eu.dnetlib.msro.workflows.resultset.ProcessCountingResultSetFactory;

import eu.dnetlib.msro.workflows.util.ProgressProvider;

import eu.dnetlib.msro.workflows.util.ResultsetProgressProvider;

import eu.dnetlib.msro.workflows.util.WorkflowsConstants;

public class DeleteHBaseRecordsJobNode extends BlackboardJobNode implements ProgressJobNode {

	private static final Log log = LogFactory.getLog(DeleteHBaseRecordsJobNode.class); // NOPMD by marko on 11/24/08 5:02 PM

	private String inputEprParam;

	private String hbaseTableProperty;

	private String cluster;

	private String xslt;

	private boolean simulation = false;

	private ProgressProvider progressProvider;

	private ProcessCountingResultSetFactory processCountingResultSetFactory;

	@Override

	protected String obtainServiceId(final NodeToken token) {

		return getServiceLocator().getServiceId(HadoopService.class);

	}

	@Override

	protected void prepareJob(final BlackboardJob job, final NodeToken token) throws Exception {

		log.info("Invoking blackboard method");

		job.setAction(HadoopBlackboardActions.DELETE_EPR_HBASE.toString());

		job.getParameters().put("input_epr", DnetXsltFunctions.encodeBase64(prepareEpr(token)));

		job.getParameters().put("xslt", DnetXsltFunctions.encodeBase64(prepareXslt()));

		job.getParameters().put("table", getPropertyFetcher().getProperty(getHbaseTableProperty()));

		job.getParameters().put("cluster", cluster);

		job.getParameters().put("simulation", String.valueOf(isSimulation()));

	}

	@Override

	protected BlackboardWorkflowJobListener generateBlackboardListener(final Engine engine, final NodeToken token) {

		return new BlackboardWorkflowJobListener(engine, token) {

			@Override

			protected void populateEnv(final Env env, final Map<String, String> responseParams) {

				final String count = responseParams.get("count");

				log.info(String.format("Deleted %s objects from HBase table %s, cluster %s", count, getPropertyFetcher().getProperty(getHbaseTableProperty()),

						getCluster()));

				env.setAttribute(WorkflowsConstants.MAIN_LOG_PREFIX + getName() + ":count", count);

			}

		};

	}

	private String prepareEpr(final NodeToken token) throws ResultSetException {

		final String epr = token.getEnv().getAttribute(inputEprParam);

		final ResultsetProgressProvider resultsetProgressProvider = processCountingResultSetFactory.createProgressProvider(token.getProcess(), epr);

		setProgressProvider(resultsetProgressProvider);

		return resultsetProgressProvider.getEpr().toString();

	}

	private String prepareXslt() throws IOException {

		return (xslt == null) || xslt.isEmpty() ? "" : IOUtils.toString(getClass().getResourceAsStream(xslt));

	}

	public String getInputEprParam() {

		return inputEprParam;

	}

	public void setInputEprParam(final String inputEprParam) {

		this.inputEprParam = inputEprParam;

	}

	public String getHbaseTableProperty() {

		return hbaseTableProperty;

	}

	public void setHbaseTableProperty(final String hbaseTableProperty) {

		this.hbaseTableProperty = hbaseTableProperty;

	}

	@Required

	public void setProcessCountingResultSetFactory(final ProcessCountingResultSetFactory processCountingResultSetFactory) {

		this.processCountingResultSetFactory = processCountingResultSetFactory;

	}

	@Override

	public ProgressProvider getProgressProvider() {

		return progressProvider;

	}

	public void setProgressProvider(final ProgressProvider progressProvider) {

		this.progressProvider = progressProvider;

	}

	public ProcessCountingResultSetFactory getProcessCountingResultSetFactory() {

		return processCountingResultSetFactory;

	}

	public String getXslt() {

		return xslt;

	}

	public void setXslt(final String xslt) {

		this.xslt = xslt;

	}

	public String getCluster() {

		return cluster;

	}

	public void setCluster(final String cluster) {

		this.cluster = cluster;

	}

	public boolean isSimulation() {

		return simulation;

	}

	public void setSimulation(final boolean simulation) {

		this.simulation = simulation;

	}

}