本文整理汇总了C++中poco::mongodb::ResponseMessage::empty方法的典型用法代码示例。如果您正苦于以下问题：C++ ResponseMessage::empty方法的具体用法？C++ ResponseMessage::empty怎么用？C++ ResponseMessage::empty使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类poco::mongodb::ResponseMessage的用法示例。
在下文中一共展示了ResponseMessage::empty方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: authenticate
/// See https://pocoproject.org/forum/viewtopic.php?f=10&t=6326&p=11426&hilit=mongodb+auth#p11485
static void authenticate(Poco::MongoDB::Connection & connection,
const std::string & database, const std::string & user, const std::string & password)
{
Poco::MongoDB::Database db(database);
/// Challenge-response authentication.
std::string nonce;
/// First step: request nonce.
{
auto command = db.createCommand();
command->setNumberToReturn(1);
command->selector().add<Int32>("getnonce", 1);
Poco::MongoDB::ResponseMessage response;
connection.sendRequest(*command, response);
if (response.documents().empty())
throw Exception("Cannot authenticate in MongoDB: server returned empty response for 'getnonce' command",
ErrorCodes::MONGODB_CANNOT_AUTHENTICATE);
auto doc = response.documents()[0];
try
{
double ok = doc->get<double>("ok", 0);
if (ok != 1)
throw Exception("Cannot authenticate in MongoDB: server returned response for 'getnonce' command that"
" has field 'ok' missing or having wrong value", ErrorCodes::MONGODB_CANNOT_AUTHENTICATE);
nonce = doc->get<std::string>("nonce", "");
if (nonce.empty())
throw Exception("Cannot authenticate in MongoDB: server returned response for 'getnonce' command that"
" has field 'nonce' missing or empty", ErrorCodes::MONGODB_CANNOT_AUTHENTICATE);
}
catch (Poco::NotFoundException & e)
{
throw Exception("Cannot authenticate in MongoDB: server returned response for 'getnonce' command that has missing required field: "
+ e.displayText(), ErrorCodes::MONGODB_CANNOT_AUTHENTICATE);
}
}
/// Second step: use nonce to calculate digest and send it back to the server.
/// Digest is hex_md5(n.nonce + username + hex_md5(username + ":mongo:" + password))
{
std::string first = user + ":mongo:" + password;
Poco::MD5Engine md5;
md5.update(first);
std::string digest_first(Poco::DigestEngine::digestToHex(md5.digest()));
std::string second = nonce + user + digest_first;
md5.reset();
md5.update(second);
std::string digest_second(Poco::DigestEngine::digestToHex(md5.digest()));
auto command = db.createCommand();
command->setNumberToReturn(1);
command->selector()
.add<Int32>("authenticate", 1)
.add<std::string>("user", user)
.add<std::string>("nonce", nonce)
.add<std::string>("key", digest_second);
Poco::MongoDB::ResponseMessage response;
connection.sendRequest(*command, response);
if (response.empty())
throw Exception("Cannot authenticate in MongoDB: server returned empty response for 'authenticate' command",
ErrorCodes::MONGODB_CANNOT_AUTHENTICATE);
auto doc = response.documents()[0];
try
{
double ok = doc->get<double>("ok", 0);
if (ok != 1)
throw Exception("Cannot authenticate in MongoDB: server returned response for 'authenticate' command that"
" has field 'ok' missing or having wrong value", ErrorCodes::MONGODB_CANNOT_AUTHENTICATE);
}
catch (Poco::NotFoundException & e)
{
throw Exception("Cannot authenticate in MongoDB: server returned response for 'authenticate' command that has missing required field: "
+ e.displayText(), ErrorCodes::MONGODB_CANNOT_AUTHENTICATE);
}
}
}