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package eu.dnetlib.data.download;
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import java.util.List;
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import javax.annotation.Resource;
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import com.google.gson.Gson;
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import com.google.gson.reflect.TypeToken;
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import eu.dnetlib.data.download.rmi.DownloadServiceActions;
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import eu.dnetlib.data.download.rmi.DownloadServiceException;
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import eu.dnetlib.data.download.rmi.DownloadServiceFeeder;
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import eu.dnetlib.enabling.tools.blackboard.BlackboardJob;
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import eu.dnetlib.enabling.tools.blackboard.BlackboardServerAction;
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import eu.dnetlib.enabling.tools.blackboard.BlackboardServerHandler;
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import org.apache.commons.codec.binary.Base64;
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import org.apache.commons.lang.StringUtils;
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import org.apache.commons.logging.Log;
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import org.apache.commons.logging.LogFactory;
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public class DownloadAction implements BlackboardServerAction<DownloadServiceActions> {
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/** The Constant log. */
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private static final Log log = LogFactory.getLog(DownloadAction.class);
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private static String DEFAULT_NUMBER_OF_THREAD = "5";
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@Resource
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private DownloadServiceFeeder downloadServiceFeeder;
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@Override
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public void execute(final BlackboardServerHandler handler, final BlackboardJob job) throws Exception {
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try {
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String epr = job.getParameters().get("epr");
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String plugin = job.getParameters().get("plugin");
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String objectStoreID = job.getParameters().get("objectStoreID");
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String protocol = job.getParameters().get("protocol");
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String mimeType = job.getParameters().get("mimeType");
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String numberOfThreads = job.getParameters().get("thread");
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String basePath = job.getParameters().get("basePath");
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String regularExpression = job.getParameters().get("regularExpressions");
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log.debug("regular Expression: " + regularExpression);
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List<String> expressions = null;
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if (!StringUtils.isBlank(regularExpression)) {
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expressions = parseRegexList(regularExpression);
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}
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if (StringUtils.isBlank(numberOfThreads)) {
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log.warn("Cannot find numberOfThread, using default value " + DEFAULT_NUMBER_OF_THREAD);
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numberOfThreads = DEFAULT_NUMBER_OF_THREAD;
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}
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log.info(String.format("downloading using plugin %s , protocol : %s into ObjectStore id %s ", plugin, protocol, objectStoreID));
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handler.ongoing(job);
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DownloadReportMap response = downloadServiceFeeder.download(epr, plugin, objectStoreID, protocol, mimeType, Integer.parseInt(numberOfThreads),
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basePath, expressions);
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if (response.getStatus()) {
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log.info(String.format("Completed Download, plugin: %s, protocol: %s, objectStoreID: %s", plugin, protocol, objectStoreID));
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job.getParameters().put("total", "" + response.getTotalDownloaded());
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job.getParameters().put("report", Base64.encodeBase64String(response.toString().getBytes()));
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handler.done(job);
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} else {
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log.error("download response is false" + response);
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handler.failed(job, new DownloadServiceException(
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"oops! something bad happen to our download hamsters, downlaoded so far: " + response.getTotalDownloaded()));
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}
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} catch (Exception e) {
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log.error("An error occur while starting download", e);
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handler.failed(job, new DownloadServiceException(e));
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}
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}
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private List<String> parseRegexList(final String regularExpression) {
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log.info("parsing regex list: " + regularExpression);
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return new Gson().fromJson(regularExpression, new TypeToken<List<String>>() {}.getType());
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}
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}
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