Exemplo n.º 1
0
  @NotNull
  private Collection<PsiElement> getDeclarationsByDescriptor(
      @NotNull DeclarationDescriptor declarationDescriptor) {
    Collection<PsiElement> declarations;
    if (declarationDescriptor instanceof PackageViewDescriptor) {
      final PackageViewDescriptor aPackage = (PackageViewDescriptor) declarationDescriptor;
      Collection<JetFile> files = trace.get(BindingContext.PACKAGE_TO_FILES, aPackage.getFqName());

      if (files == null) {
        return Collections
            .emptyList(); // package can be defined out of Kotlin sources, e. g. in library or Java
        // code
      }

      declarations =
          Collections2.transform(
              files,
              new Function<JetFile, PsiElement>() {
                @Override
                public PsiElement apply(@Nullable JetFile file) {
                  assert file != null : "File is null for aPackage " + aPackage;
                  return file.getPackageDirective().getNameIdentifier();
                }
              });
    } else {
      declarations =
          Collections.singletonList(
              BindingContextUtils.descriptorToDeclaration(
                  trace.getBindingContext(), declarationDescriptor));
    }
    return declarations;
  }
Exemplo n.º 2
0
 private List<String> getCurrentServerIds(boolean nag, boolean lagged) {
   try (Jedis jedis = pool.getResource()) {
     long time = getRedisTime(jedis.time());
     int nagTime = 0;
     if (nag) {
       nagTime = nagAboutServers.decrementAndGet();
       if (nagTime <= 0) {
         nagAboutServers.set(10);
       }
     }
     ImmutableList.Builder<String> servers = ImmutableList.builder();
     Map<String, String> heartbeats = jedis.hgetAll("heartbeats");
     for (Map.Entry<String, String> entry : heartbeats.entrySet()) {
       try {
         long stamp = Long.parseLong(entry.getValue());
         if (lagged ? time >= stamp + 30 : time <= stamp + 30) servers.add(entry.getKey());
         else if (nag && nagTime <= 0) {
           getLogger()
               .severe(
                   entry.getKey()
                       + " is "
                       + (time - stamp)
                       + " seconds behind! (Time not synchronized or server down?)");
         }
       } catch (NumberFormatException ignored) {
       }
     }
     return servers.build();
   } catch (JedisConnectionException e) {
     getLogger().log(Level.SEVERE, "Unable to fetch server IDs", e);
     return Collections.singletonList(configuration.getServerId());
   }
 }
  private List<SSTableReader> getNextNonExpiredSSTables(
      Iterable<SSTableReader> nonExpiringSSTables, final int gcBefore) {
    int base = cfs.getMinimumCompactionThreshold();
    long now = getNow();
    List<SSTableReader> mostInteresting = getCompactionCandidates(nonExpiringSSTables, now, base);
    if (mostInteresting != null) {
      return mostInteresting;
    }

    // if there is no sstable to compact in standard way, try compacting single sstable whose
    // droppable tombstone
    // ratio is greater than threshold.
    List<SSTableReader> sstablesWithTombstones = Lists.newArrayList();
    for (SSTableReader sstable : nonExpiringSSTables) {
      if (worthDroppingTombstones(sstable, gcBefore)) sstablesWithTombstones.add(sstable);
    }
    if (sstablesWithTombstones.isEmpty()) return Collections.emptyList();

    return Collections.singletonList(
        Collections.min(sstablesWithTombstones, new SSTableReader.SizeComparator()));
  }
Exemplo n.º 4
0
  public MutationState dropColumn(DropColumnStatement statement) throws SQLException {
    connection.rollback();
    boolean wasAutoCommit = connection.getAutoCommit();
    try {
      connection.setAutoCommit(false);
      TableName tableNameNode = statement.getTableName();
      String schemaName = tableNameNode.getSchemaName();
      String tableName = tableNameNode.getTableName();
      PTable table = getLatestTable(schemaName, tableName); // TODO: Do in resolver?
      boolean retried = false;
      while (true) {
        final ColumnResolver resolver = FromCompiler.getResolver(statement, connection);
        ColumnRef columnRef = null;
        try {
          columnRef = resolver.resolveColumn((ColumnParseNode) statement.getColumnRef());
        } catch (ColumnNotFoundException e) {
          if (statement.ifExists()) {
            return new MutationState(0, connection);
          }
          throw e;
        }
        TableRef tableRef = columnRef.getTableRef();
        PColumn columnToDrop = columnRef.getColumn();
        if (SchemaUtil.isPKColumn(columnToDrop)) {
          throw new SQLExceptionInfo.Builder(SQLExceptionCode.CANNOT_DROP_PK)
              .setColumnName(columnToDrop.getName().getString())
              .build()
              .buildException();
        }
        int columnCount = table.getColumns().size() - 1;
        String familyName = null;
        List<String> binds = Lists.newArrayListWithExpectedSize(4);
        StringBuilder buf =
            new StringBuilder(
                "DELETE FROM " + TYPE_SCHEMA + ".\"" + TYPE_TABLE + "\" WHERE " + TABLE_SCHEM_NAME);
        if (schemaName == null || schemaName.length() == 0) {
          buf.append(" IS NULL AND ");
        } else {
          buf.append(" = ? AND ");
          binds.add(schemaName);
        }
        buf.append(TABLE_NAME_NAME + " = ? AND " + COLUMN_NAME + " = ? AND " + TABLE_CAT_NAME);
        binds.add(tableName);
        binds.add(columnToDrop.getName().getString());
        if (columnToDrop.getFamilyName() == null) {
          buf.append(" IS NULL");
        } else {
          buf.append(" = ?");
          binds.add(familyName = columnToDrop.getFamilyName().getString());
        }

        PreparedStatement colDelete = connection.prepareStatement(buf.toString());
        for (int i = 0; i < binds.size(); i++) {
          colDelete.setString(i + 1, binds.get(i));
        }
        colDelete.execute();

        PreparedStatement colUpdate = connection.prepareStatement(UPDATE_COLUMN_POSITION);
        colUpdate.setString(1, schemaName);
        colUpdate.setString(2, tableName);
        for (int i = columnToDrop.getPosition() + 1; i < table.getColumns().size(); i++) {
          PColumn column = table.getColumns().get(i);
          colUpdate.setString(3, column.getName().getString());
          colUpdate.setString(
              4, column.getFamilyName() == null ? null : column.getFamilyName().getString());
          colUpdate.setInt(5, i);
          colUpdate.execute();
        }
        final long seqNum = table.getSequenceNumber() + 1;
        PreparedStatement tableUpsert = connection.prepareStatement(MUTATE_TABLE);
        tableUpsert.setString(1, schemaName);
        tableUpsert.setString(2, tableName);
        tableUpsert.setString(3, table.getType().getSerializedValue());
        tableUpsert.setLong(4, seqNum);
        tableUpsert.setInt(5, columnCount);
        tableUpsert.execute();

        final List<Mutation> tableMetaData = connection.getMutationState().toMutations();
        connection.rollback();
        // If we're dropping the last KV colum, we have to pass an indication along to the
        // dropColumn call
        // to populate a new empty KV column
        byte[] emptyCF = null;
        if (table.getType() != PTableType.VIEW
            && !SchemaUtil.isPKColumn(columnToDrop)
            && table.getColumnFamilies().get(0).getName().equals(columnToDrop.getFamilyName())
            && table.getColumnFamilies().get(0).getColumns().size() == 1) {
          emptyCF =
              SchemaUtil.getEmptyColumnFamily(
                  table.getColumnFamilies().subList(1, table.getColumnFamilies().size()));
        }
        MetaDataMutationResult result =
            connection
                .getQueryServices()
                .dropColumn(
                    tableMetaData,
                    emptyCF != null
                            && Bytes.compareTo(emptyCF, QueryConstants.EMPTY_COLUMN_BYTES) == 0
                        ? emptyCF
                        : null);
        try {
          MutationCode code = processMutationResult(schemaName, tableName, result);
          if (code == MutationCode.COLUMN_NOT_FOUND) {
            connection.addTable(schemaName, result.getTable());
            if (!statement.ifExists()) {
              throw new ColumnNotFoundException(
                  schemaName, tableName, familyName, columnToDrop.getName().getString());
            }
            return new MutationState(0, connection);
          }
          connection.removeColumn(
              schemaName,
              tableName,
              familyName,
              columnToDrop.getName().getString(),
              seqNum,
              result.getMutationTime());
          // If we have a VIEW, then only delete the metadata, and leave the table data alone
          if (table.getType() != PTableType.VIEW) {
            connection.setAutoCommit(true);
            Long scn = connection.getSCN();
            // Delete everything in the column. You'll still be able to do queries at earlier
            // timestamps
            long ts = (scn == null ? result.getMutationTime() : scn);
            MutationPlan plan =
                new PostDDLCompiler(connection)
                    .compile(tableRef, emptyCF, Collections.singletonList(columnToDrop), ts);
            return connection.getQueryServices().updateData(plan);
          }
          return new MutationState(0, connection);
        } catch (ConcurrentTableMutationException e) {
          if (retried) {
            throw e;
          }
          table = connection.getPMetaData().getSchema(schemaName).getTable(tableName);
          retried = true;
        }
      }
    } finally {
      connection.setAutoCommit(wasAutoCommit);
    }
  }
Exemplo n.º 5
0
 public MutationState dropTable(DropTableStatement statement) throws SQLException {
   connection.rollback();
   boolean wasAutoCommit = connection.getAutoCommit();
   try {
     TableName tableNameNode = statement.getTableName();
     String schemaName = tableNameNode.getSchemaName();
     String tableName = tableNameNode.getTableName();
     byte[] key = SchemaUtil.getTableKey(schemaName, tableName);
     Long scn = connection.getSCN();
     @SuppressWarnings(
         "deprecation") // FIXME: Remove when unintentionally deprecated method is fixed
                        // (HBASE-7870).
     // FIXME: the version of the Delete constructor without the lock args was introduced
     // in 0.94.4, thus if we try to use it here we can no longer use the 0.94.2 version
     // of the client.
     List<Mutation> tableMetaData =
         Collections.<Mutation>singletonList(
             new Delete(key, scn == null ? HConstants.LATEST_TIMESTAMP : scn, null));
     MetaDataMutationResult result =
         connection.getQueryServices().dropTable(tableMetaData, statement.isView());
     MutationCode code = result.getMutationCode();
     switch (code) {
       case TABLE_NOT_FOUND:
         if (!statement.ifExists()) {
           throw new TableNotFoundException(schemaName, tableName);
         }
         break;
       case NEWER_TABLE_FOUND:
         throw new NewerTableAlreadyExistsException(schemaName, tableName);
       case UNALLOWED_TABLE_MUTATION:
         throw new SQLExceptionInfo.Builder(SQLExceptionCode.CANNOT_MUTATE_TABLE)
             .setSchemaName(schemaName)
             .setTableName(tableName)
             .build()
             .buildException();
       default:
         try {
           connection.removeTable(schemaName, tableName);
         } catch (TableNotFoundException e) { // Ignore - just means wasn't cached
         }
         if (!statement.isView()) {
           connection.setAutoCommit(true);
           // Delete everything in the column. You'll still be able to do queries at earlier
           // timestamps
           long ts = (scn == null ? result.getMutationTime() : scn);
           // Create empty table and schema - they're only used to get the name from
           // PName name, PTableType type, long timeStamp, long sequenceNumber, List<PColumn>
           // columns
           PTable table = result.getTable();
           PSchema schema =
               new PSchemaImpl(
                   schemaName,
                   ImmutableMap.<String, PTable>of(table.getName().getString(), table));
           TableRef tableRef = new TableRef(null, table, schema, ts);
           MutationPlan plan =
               new PostDDLCompiler(connection)
                   .compile(tableRef, null, Collections.<PColumn>emptyList(), ts);
           return connection.getQueryServices().updateData(plan);
         }
         break;
     }
     return new MutationState(0, connection);
   } finally {
     connection.setAutoCommit(wasAutoCommit);
   }
 }
Exemplo n.º 6
0
 public List<String> getDefaultSchemaPath() {
   final String schemaName = connection.getSchema();
   return schemaName == null
       ? Collections.<String>emptyList()
       : Collections.singletonList(schemaName);
 }