gerrit.onap Code Review - sdc.git/blob

   1 package org.openecomp.core.tools.importinfo;
   2
   3 import static org.openecomp.core.tools.exportinfo.ExportDataCommand.NULL_REPRESENTATION;
   4
   5 import com.datastax.driver.core.BoundStatement;
   6 import com.datastax.driver.core.DataType.Name;
   7 import com.datastax.driver.core.PreparedStatement;
   8 import com.datastax.driver.core.Session;
   9 import com.google.common.collect.ImmutableMap;
  10 import com.google.common.collect.ImmutableMap.Builder;
  11 import com.google.common.collect.Sets;
  12 import java.io.IOException;
  13 import java.nio.ByteBuffer;
  14 import java.nio.file.Path;
  15 import java.util.Base64;
  16 import java.util.Date;
  17 import java.util.HashMap;
  18 import java.util.List;
  19 import java.util.Map;
  20 import java.util.Set;
  21 import java.util.stream.Collectors;
  22 import org.apache.commons.lang3.StringUtils;
  23 import org.codehaus.jackson.map.ObjectMapper;
  24 import org.openecomp.core.nosqldb.impl.cassandra.CassandraSessionFactory;
  25 import org.openecomp.core.tools.exportinfo.ExportDataCommand;
  26 import org.openecomp.core.tools.model.ColumnDefinition;
  27 import org.openecomp.core.tools.model.TableData;
  28 import org.openecomp.core.tools.util.Utils;
  29 import org.openecomp.sdc.logging.api.Logger;
  30 import org.openecomp.sdc.logging.api.LoggerFactory;
  31
  32 public class ImportSingleTable {
  33
  34     private static final Logger logger = LoggerFactory.getLogger(ImportSingleTable.class);
  35
  36     private static final String INSERT_INTO = "INSERT INTO ";
  37     private static final String VALUES = " VALUES ";
  38     private static final Map<String, PreparedStatement> statementsCache = new HashMap<>();
  39
  40     public void importFile(Path file) {
  41         try {
  42             ObjectMapper objectMapper = new ObjectMapper();
  43             TableData tableData = objectMapper.readValue(file.toFile(), TableData.class);
  44             Session session = CassandraSessionFactory.getSession();
  45             PreparedStatement ps = getPrepareStatement(tableData, session);
  46             tableData.rows.forEach(row -> executeQuery(session, ps, tableData.definitions, row));
  47         } catch (IOException e) {
  48             Utils.logError(logger, e);
  49         }
  50
  51     }
  52
  53     private PreparedStatement getPrepareStatement(TableData tableData, Session session) {
  54         String query = createQuery(tableData);
  55         if (statementsCache.containsKey(query)) {
  56             return statementsCache.get(query);
  57         }
  58         PreparedStatement preparedStatement = session.prepare(query);
  59         statementsCache.put(query, preparedStatement);
  60         return preparedStatement;
  61     }
  62
  63     private void executeQuery(Session session, PreparedStatement ps, List<ColumnDefinition> definitions, List<String> rows) {
  64         BoundStatement bind = ps.bind();
  65         for (int i = 0; i < definitions.size(); i++) {
  66             ColumnDefinition columnDefinition = definitions.get(i);
  67             String rowData = rows.get(i);
  68             Name name = dataTypesMap.get(columnDefinition.getType());
  69             handleByType(bind, i, rowData, name);
  70         }
  71         session.execute(bind);
  72     }
  73
  74     private void handleByType(BoundStatement bind, int i, String rowData, Name name) {
  75         switch (name) {
  76             case VARCHAR:
  77             case TEXT:
  78             case ASCII:
  79                 String string = new String(Base64.getDecoder().decode(rowData));
  80                 bind.setString(i, NULL_REPRESENTATION.equals(string) ? null : string);
  81                 break;
  82             case BLOB:
  83                 bind.setBytes(i, ByteBuffer.wrap(Base64.getDecoder().decode(rowData.getBytes())));
  84                 break;
  85             case TIMESTAMP:
  86                 if (StringUtils.isEmpty(rowData)){
  87                     bind.setTimestamp(i, null);
  88                 } else {
  89                     bind.setTimestamp(i, new Date(Long.parseLong(rowData)));
  90                 }
  91                 break;
  92             case BOOLEAN:
  93                 bind.setBool(i, Boolean.parseBoolean(rowData));
  94                 break;
  95             case COUNTER:
  96                 bind.setLong(i, Long.parseLong(rowData));
  97                 break;
  98             case INT:
  99                 bind.setInt(i, Integer.parseInt(rowData));
 100                 break;
 101             case FLOAT:
 102                 bind.setFloat(i, Float.parseFloat(rowData));
 103                 break;
 104             case SET:
 105                 byte[] decoded = Base64.getDecoder().decode(rowData);
 106                 String decodedStr = new String(decoded);
 107                 if (!StringUtils.isEmpty(decodedStr)) {
 108                     String[] splitted = decodedStr.split(ExportDataCommand.JOIN_DELIMITER_SPLITTER);
 109                     Set set = Sets.newHashSet(splitted);
 110                     set.remove("");
 111                     bind.setSet(i, set);
 112                 } else {
 113                     bind.setSet(i, null);
 114                 }
 115                 break;
 116             case MAP:
 117                 byte[] decodedMap = Base64.getDecoder().decode(rowData);
 118                 String mapStr = new String(decodedMap);
 119                 if (!StringUtils.isEmpty(mapStr)) {
 120                     String[] splittedMap = mapStr.split(ExportDataCommand.JOIN_DELIMITER_SPLITTER);
 121                     Map<String, String> map = new HashMap<>();
 122                     for (String keyValue : splittedMap) {
 123                         String[] split = keyValue.split(ExportDataCommand.MAP_DELIMITER_SPLITTER);
 124                         map.put(split[0], split[1]);
 125                     }
 126                     bind.setMap(i, map);
 127                 } else {
 128                     bind.setMap(i, null);
 129                 }
 130                 break;
 131             default:
 132                 throw new UnsupportedOperationException("Name is not supported :" + name);
 133
 134         }
 135     }
 136
 137     private String createQuery(TableData tableData) {
 138         ColumnDefinition def = tableData.definitions.iterator().next();
 139         StringBuilder sb = new StringBuilder();
 140         sb.append(INSERT_INTO).append(def.getKeyspace()).append(".").append(def.getTable());
 141         sb.append(tableData.definitions.stream().map(ColumnDefinition::getName).collect(Collectors.joining(" , ", " ( ", " ) ")));
 142         sb.append(VALUES).append(tableData.definitions.stream().map(definition -> "?").collect(Collectors.joining(" , ", " ( ", " ) "))).append(";");
 143         return sb.toString();
 144     }
 145
 146     public static final ImmutableMap<String, Name> dataTypesMap;
 147
 148     static {
 149         Builder<String, Name> builder = ImmutableMap.builder();
 150         Name[] values = Name.values();
 151         for (Name name : values) {
 152             builder.put(name.name().toLowerCase(), name);
 153         }
 154         dataTypesMap = builder.build();
 155     }
 156
 157 }