void runCommands(OperationContext* txn,
const rpc::RequestInterface& request,
rpc::ReplyBuilderInterface* replyBuilder) {
try {
dassert(replyBuilder->getState() == rpc::ReplyBuilderInterface::State::kMetadata);
Command* c = nullptr;
// In the absence of a Command object, no redaction is possible. Therefore
// to avoid displaying potentially sensitive information in the logs,
// we restrict the log message to the name of the unrecognized command.
// However, the complete command object will still be echoed to the client.
if (!(c = Command::findCommand(request.getCommandName()))) {
Command::unknownCommands.increment();
std::string msg = str::stream() << "no such command: '" << request.getCommandName()
<< "'";
LOG(2) << msg;
uasserted(ErrorCodes::CommandNotFound,
str::stream() << msg << ", bad cmd: '" << request.getCommandArgs() << "'");
}
LOG(2) << "run command " << request.getDatabase() << ".$cmd" << ' '
<< c->getRedactedCopyForLogging(request.getCommandArgs());
Command::execCommand(txn, c, request, replyBuilder);
}
catch (const DBException& ex) {
Command::generateErrorResponse(txn, replyBuilder, ex, request);
}
}
// called into by the web server. For now we just translate the parameters
// to their old style equivalents.
void Command::execCommand(OperationContext* txn,
Command* command,
const rpc::RequestInterface& request,
rpc::ReplyBuilderInterface* replyBuilder) {
int queryFlags = 0;
BSONObj cmdObj;
std::tie(cmdObj, queryFlags) = uassertStatusOK(
rpc::downconvertRequestMetadata(request.getCommandArgs(),
request.getMetadata())
);
std::string db = request.getDatabase().rawData();
BSONObjBuilder result;
execCommandClientBasic(txn,
command,
*txn->getClient(),
queryFlags,
request.getDatabase().rawData(),
cmdObj,
result);
replyBuilder
->setMetadata(rpc::makeEmptyMetadata())
.setCommandReply(result.done());
}
void Command::generateErrorResponse(OperationContext* txn,
rpc::ReplyBuilderInterface* replyBuilder,
const DBException& exception,
const rpc::RequestInterface& request) {
LOG(1) << "assertion while executing command '" << request.getCommandName() << "' "
<< "on database '" << request.getDatabase() << "': " << exception.toString();
_generateErrorResponse(txn, replyBuilder, exception, rpc::makeEmptyMetadata());
}
void Command::generateErrorResponse(OperationContext* txn,
rpc::ReplyBuilderInterface* replyBuilder,
const DBException& exception,
const rpc::RequestInterface& request,
Command* command,
const BSONObj& metadata) {
LOG(1) << "assertion while executing command '" << request.getCommandName() << "' "
<< "on database '" << request.getDatabase() << "' "
<< "with arguments '" << command->getRedactedCopyForLogging(request.getCommandArgs())
<< "' "
<< "and metadata '" << request.getMetadata() << "': " << exception.toString();
_generateErrorResponse(txn, replyBuilder, exception, metadata);
}
bool Command::isHelpRequest(const rpc::RequestInterface& request) {
return request.getCommandArgs()["help"].trueValue();
}