Example #1
0
/* The function to print versions */
static void printVersions(const std::string &row, const CellVec &versions)
{
    std::cout << "row: " << row << ", values: ";
    for (CellVec::const_iterator it = versions.begin(); it != versions.end(); ++it) {
        std::cout << (*it).value << "; ";
    }
    std::cout << std::endl;
}
Example #2
0
int main(int argc, char** argv){
  NProgram program(argc, argv);

  NPLParser parser;
  nvar code = parser.parseFile("kernel.npl");
  
  //cout << "code is: " << code << endl;
  
  typedef NVector<Cell*> CellVec;
  CellVec cellVec;
  
  typedef NVector<CellFunc*> FuncVec;
  FuncVec funcVec;
  
  for(size_t i = 0; i < 10; ++i){
    cellVec.push_back(new Cell);
    funcVec.push_back(new CellFunc);
  }

  NPLModule module;

  if(!module.compile(code)){
    cerr << "failed to compile" << endl;
    NProgram::exit(1);
  }
  
  CellFunc* f = funcVec[0];
  
  module.getFunc({"Cell", "run", 1}, f);
  
  NPQueue queue;
  for(size_t i = 0; i < funcVec.size(); ++i){
    funcVec[i]->fp = f->fp;
    funcVec[i]->y = 10;
    funcVec[i]->o = cellVec[i];
    queue.add(funcVec[i]);
  }

  queue.run();

  for(size_t i = 0; i < cellVec.size(); ++i){
    cout << "x is: " << cellVec[i]->x << endl;
  }

  nvar x;

  return 0;
}
Example #3
0
void initCells(){
  for(size_t i = 0; i < ROWS; ++i){
    for(size_t j = 0; j < COLUMNS; ++j){
      cellVec.push_back(new Cell);
    }
  }
}
Example #4
0
int 
main(int argc, char** argv) 
{
  if (argc < 3) {
    std::cerr << "Invalid arguments!\n" << "Usage: DemoClient host port" << std::endl;
    return -1;
  }

  boost::shared_ptr<TTransport> socket(new TSocket(argv[1], boost::lexical_cast<int>(argv[2])));
  boost::shared_ptr<TTransport> transport(new TBufferedTransport(socket));
  boost::shared_ptr<TProtocol> protocol(new TBinaryProtocol(transport));
  HbaseClient client(protocol);

  try {
    transport->open();

    std::string t("demo_table");

    //
    // Scan all tables, look for the demo table and delete it.
    //
    std::cout << "scanning tables..." << std::endl;
    StrVec tables;
    client.getTableNames(tables);
    for (StrVec::const_iterator it = tables.begin(); it != tables.end(); ++it) {
      std::cout << "  found: " << *it << std::endl;
      if (t == *it) {
        if (client.isTableEnabled(*it)) {
          std::cout << "    disabling table: " << *it << std::endl;
          client.disableTable(*it);
        }
        std::cout << "    deleting table: " << *it << std::endl;
        client.deleteTable(*it);
      }
    }

    //
    // Create the demo table with two column families, entry: and unused:
    //
    ColVec columns;
    columns.push_back(ColumnDescriptor());
    columns.back().name = "entry:";
    columns.back().maxVersions = 10;
    columns.push_back(ColumnDescriptor());
    columns.back().name = "unused:";

    std::cout << "creating table: " << t << std::endl;
    try {
      client.createTable(t, columns);
    } catch (const AlreadyExists &ae) {
      std::cerr << "WARN: " << ae.message << std::endl;
    }

    ColMap columnMap;
    client.getColumnDescriptors(columnMap, t);
    std::cout << "column families in " << t << ": " << std::endl;
    for (ColMap::const_iterator it = columnMap.begin(); it != columnMap.end(); ++it) {
      std::cout << "  column: " << it->second.name << ", maxVer: " << it->second.maxVersions << std::endl;
    }

    //
    // Test UTF-8 handling
    //
    std::string invalid("foo-\xfc\xa1\xa1\xa1\xa1\xa1");
    std::string valid("foo-\xE7\x94\x9F\xE3\x83\x93\xE3\x83\xBC\xE3\x83\xAB");
    std::map<std::string, std::string> attrs;

    // non-utf8 is fine for data
    std::vector<Mutation> mutations;
    mutations.push_back(Mutation());
    mutations.back().column = "entry:foo";
    mutations.back().value = invalid;
    client.mutateRow(t, "foo", mutations, attrs);

    // try empty strings
    mutations.clear();
    mutations.push_back(Mutation());
    mutations.back().column = "entry:";
    mutations.back().value = "";
    client.mutateRow(t, "", mutations, attrs);

    // this row name is valid utf8
    mutations.clear();
    mutations.push_back(Mutation());
    mutations.back().column = "entry:foo";
    mutations.back().value = valid;
    client.mutateRow(t, valid, mutations, attrs);

    // non-utf8 is now allowed in row names because HBase stores values as binary
    mutations.clear();
    mutations.push_back(Mutation());
    mutations.back().column = "entry:foo";
    mutations.back().value = invalid;
    client.mutateRow(t, invalid, mutations, attrs);

    // Run a scanner on the rows we just created
    StrVec columnNames;
    columnNames.push_back("entry:");

    std::cout << "Starting scanner..." << std::endl;
    int scanner = client.scannerOpen(t, "", columnNames, attrs);
    try {
      while (true) {
        std::vector<TRowResult> value;
        client.scannerGet(value, scanner);
        if (value.size() == 0)
          break;
        printRow(value);
      }
    } catch (const IOError &ioe) {
      std::cerr << "FATAL: Scanner raised IOError" << std::endl;
    }

    client.scannerClose(scanner);
    std::cout << "Scanner finished" << std::endl;

    //
    // Run some operations on a bunch of rows.
    //
    for (int i = 100; i >= 0; --i) {
      // format row keys as "00000" to "00100"
      char buf[32];
      sprintf(buf, "%05d", i);
      std::string row(buf);
      std::vector<TRowResult> rowResult;

      mutations.clear();
      mutations.push_back(Mutation());
      mutations.back().column = "unused:";
      mutations.back().value = "DELETE_ME";
      client.mutateRow(t, row, mutations, attrs);
      client.getRow(rowResult, t, row, attrs);
      printRow(rowResult);
      client.deleteAllRow(t, row, attrs);

      mutations.clear();
      mutations.push_back(Mutation());
      mutations.back().column = "entry:num";
      mutations.back().value = "0";
      mutations.push_back(Mutation());
      mutations.back().column = "entry:foo";
      mutations.back().value = "FOO";
      client.mutateRow(t, row, mutations, attrs);
      client.getRow(rowResult, t, row, attrs);
      printRow(rowResult);

      // sleep to force later timestamp 
      poll(0, 0, 50);

      mutations.clear();
      mutations.push_back(Mutation());
      mutations.back().column = "entry:foo";
      mutations.back().isDelete = true;
      mutations.push_back(Mutation());
      mutations.back().column = "entry:num";
      mutations.back().value = "-1";
      client.mutateRow(t, row, mutations, attrs);
      client.getRow(rowResult, t, row, attrs);
      printRow(rowResult);

      mutations.clear();
      mutations.push_back(Mutation());
      mutations.back().column = "entry:num";
      mutations.back().value = boost::lexical_cast<std::string>(i);
      mutations.push_back(Mutation());
      mutations.back().column = "entry:sqr";
      mutations.back().value = boost::lexical_cast<std::string>(i*i);
      client.mutateRow(t, row, mutations, attrs);
      client.getRow(rowResult, t, row, attrs);
      printRow(rowResult);

      mutations.clear();
      mutations.push_back(Mutation());
      mutations.back().column = "entry:num";
      mutations.back().value = "-999";
      mutations.push_back(Mutation());
      mutations.back().column = "entry:sqr";
      mutations.back().isDelete = true;
      client.mutateRowTs(t, row, mutations, 1, attrs); // shouldn't override latest
      client.getRow(rowResult, t, row, attrs);
      printRow(rowResult);

      CellVec versions;
      client.getVer(versions, t, row, "entry:num", 10, attrs);
      printVersions(row, versions);
      assert(versions.size());
      std::cout << std::endl;

      try {
        std::vector<TCell> value;
        client.get(value, t, row, "entry:foo", attrs);
        if (value.size()) {
          std::cerr << "FATAL: shouldn't get here!" << std::endl;
          return -1;
        }
      } catch (const IOError &ioe) {
        // blank
      }
    }

    // scan all rows/columns

    columnNames.clear();
    client.getColumnDescriptors(columnMap, t);
    std::cout << "The number of columns: " << columnMap.size() << std::endl;
    for (ColMap::const_iterator it = columnMap.begin(); it != columnMap.end(); ++it) {
      std::cout << " column with name: " + it->second.name << std::endl;
      columnNames.push_back(it->second.name);
    }
    std::cout << std::endl;

    std::cout << "Starting scanner..." << std::endl;
    scanner = client.scannerOpenWithStop(t, "00020", "00040", columnNames, attrs);
    try {
      while (true) {
        std::vector<TRowResult> value;
        client.scannerGet(value, scanner);
        if (value.size() == 0)
          break;
        printRow(value);
      }
    } catch (const IOError &ioe) {
      std::cerr << "FATAL: Scanner raised IOError" << std::endl;
    }

    client.scannerClose(scanner);
    std::cout << "Scanner finished" << std::endl;

    transport->close();
  } catch (const TException &tx) {
    std::cerr << "ERROR: " << tx.what() << std::endl;
  }
}