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/**
* Copyright © 2016-2017 European Support Limited.
*/
package org.openecomp.core.tools.exportinfo;
import com.datastax.driver.core.ResultSet;
import com.datastax.driver.core.ResultSetFuture;
import com.datastax.driver.core.Session;
import com.google.common.collect.Sets;
import com.google.common.util.concurrent.FutureCallback;
import com.google.common.util.concurrent.Futures;
import org.apache.commons.io.FileUtils;
import org.openecomp.core.nosqldb.impl.cassandra.CassandraSessionFactory;
import org.openecomp.core.tools.importinfo.ImportProperties;
import org.openecomp.core.tools.util.Utils;
import org.openecomp.core.tools.util.ZipUtils;
import org.openecomp.core.zusammen.impl.CassandraConnectionInitializer;
import org.openecomp.sdc.logging.api.Logger;
import org.openecomp.sdc.logging.api.LoggerFactory;
import org.yaml.snakeyaml.Yaml;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.time.LocalDateTime;
import java.time.format.DateTimeFormatter;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.Executor;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.stream.Collectors;
import static java.nio.file.Files.createDirectories;
public final class ExportDataCommand {
private static final Logger logger = LoggerFactory.getLogger(ExportDataCommand.class);
public static final String JOIN_DELIMITER = "$#";
public static final String JOIN_DELIMITER_SPLITTER = "\\$\\#";
public static final String MAP_DELIMITER = "!@";
public static final String MAP_DELIMITER_SPLITTER = "\\!\\@";
public static final int THREAD_POOL_SIZE = 6;
private ExportDataCommand() {
}
public static void exportData(String filterItem) {
ExecutorService executor = null;
try {
CassandraConnectionInitializer.setCassandraConnectionPropertiesToSystem();
Path rootDir = Paths.get(ImportProperties.ROOT_DIRECTORY);
initDir(rootDir);
try (Session session = CassandraSessionFactory.getSession()) {
final Set<String> filteredItems = Sets.newHashSet(filterItem);
Set<String> fis = filteredItems.stream().map(fi -> fi.replaceAll("\\r", "")).collect(Collectors.toSet());
Map<String, List<String>> queries;
Yaml yaml = new Yaml();
try (InputStream is = ExportDataCommand.class.getResourceAsStream("/queries.yaml")) {
queries = (Map<String, List<String>>) yaml.load(is);
}
List<String> queriesList = queries.get("queries");
List<String> itemsColumns = queries.get("item_columns");
Set<String> vlms = new HashSet<>();
CountDownLatch doneQueries = new CountDownLatch(queriesList.size());
executor = Executors.newFixedThreadPool(THREAD_POOL_SIZE);
for (int i = 0; i < queriesList.size(); i++) {
executeQuery(session, queriesList.get(i), fis, itemsColumns.get(i), vlms, doneQueries, executor);
}
doneQueries.await();
if (!vlms.isEmpty()) {
CountDownLatch doneVmls = new CountDownLatch(queriesList.size());
for (int i = 0; i < queriesList.size(); i++) {
executeQuery(session, queriesList.get(i), vlms, itemsColumns.get(i), null, doneVmls, executor);
}
doneVmls.await();
}
}
zipPath(rootDir);
FileUtils.forceDelete(rootDir.toFile());
} catch (Exception ex) {
Utils.logError(logger, ex);
} finally {
if (executor != null) {
executor.shutdown();
}
}
}
private static void executeQuery(final Session session, final String query, final Set<String> filteredItems, final String filteredColumn,
final Set<String> vlms, final CountDownLatch donequerying, Executor executor) {
ResultSetFuture resultSetFuture = session.executeAsync(query);
Futures.addCallback(resultSetFuture, new FutureCallback<ResultSet>() {
@Override
public void onSuccess(ResultSet resultSet) {
try {
Utils.printMessage(logger, "Start to serialize " + query);
new ExportSerializer().serializeResult(resultSet, filteredItems, filteredColumn, vlms);
donequerying.countDown();
} catch (Exception e){
Utils.logError(logger, "Serialization failed :" + query, e);
System.exit(-1);
}
}
@Override
public void onFailure(Throwable t) {
Utils.logError(logger, "Query failed :" + query, t);
System.exit(-1);
}
}, executor);
}
private static void zipPath(Path rootDir) throws IOException {
LocalDateTime date = LocalDateTime.now();
DateTimeFormatter formatter = DateTimeFormatter.ISO_LOCAL_DATE_TIME;
String dateStr = date.format(formatter);
dateStr = dateStr.replaceAll(":", "_");
String zipFile = System.getProperty("user.home") + File.separatorChar + "onboarding_import" + dateStr + ".zip";
ZipUtils.createZip(zipFile, rootDir);
Utils.printMessage(logger, "Exported file :" + zipFile);
}
public static void initDir(Path rootDir) throws IOException {
if (rootDir.toFile().exists()) {
FileUtils.forceDelete(rootDir.toFile());
}
createDirectories(rootDir);
}
}
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