/* 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;
}
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;
}
void initCells(){
for(size_t i = 0; i < ROWS; ++i){
for(size_t j = 0; j < COLUMNS; ++j){
cellVec.push_back(new Cell);
}
}
}
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;
}
}