void Lock::GlobalLock::_enqueue(LockMode lockMode, Date_t deadline) {
if (lockMode == LockMode::MODE_IX) {
auto ticketholder = FlowControlTicketholder::get(_opCtx);
if (ticketholder) {
ticketholder->getTicket(_opCtx);
}
}
try {
if (_opCtx->lockState()->shouldConflictWithSecondaryBatchApplication()) {
_pbwm.lock(MODE_IS);
}
auto unlockPBWM = makeGuard([this] {
if (_opCtx->lockState()->shouldConflictWithSecondaryBatchApplication()) {
_pbwm.unlock();
}
});
_opCtx->lockState()->lock(
_opCtx, resourceIdReplicationStateTransitionLock, MODE_IX, deadline);
auto unlockRSTL = makeGuard(
[this] { _opCtx->lockState()->unlock(resourceIdReplicationStateTransitionLock); });
_result = LOCK_INVALID;
_result = _opCtx->lockState()->lockGlobalBegin(_opCtx, lockMode, deadline);
unlockRSTL.dismiss();
unlockPBWM.dismiss();
} catch (const ExceptionForCat<ErrorCategory::Interruption>&) {
// The kLeaveUnlocked behavior suppresses this exception.
if (_interruptBehavior == InterruptBehavior::kThrow)
throw;
}
}
fbstring errnoStr(int err) {
int savedErrno = errno;
// Ensure that we reset errno upon exit.
auto guard(makeGuard([&] { errno = savedErrno; }));
char buf[1024];
buf[0] = '\0';
fbstring result;
// https://developer.apple.com/library/mac/documentation/Darwin/Reference/ManPages/man3/strerror_r.3.html
// http://www.kernel.org/doc/man-pages/online/pages/man3/strerror.3.html
#if defined(__APPLE__) || defined(__FreeBSD__) || \
((_POSIX_C_SOURCE >= 200112L || _XOPEN_SOURCE >= 600) && !_GNU_SOURCE)
// Using XSI-compatible strerror_r
int r = strerror_r(err, buf, sizeof(buf));
// OSX/FreeBSD use EINVAL and Linux uses -1 so just check for non-zero
if (r != 0) {
result = to<fbstring>(
"Unknown error ", err,
" (strerror_r failed with error ", errno, ")");
} else {
result.assign(buf);
}
#else
// Using GNU strerror_r
result.assign(strerror_r(err, buf, sizeof(buf)));
#endif
return result;
}
Status ServiceExecutorReserved::_startWorker() {
log() << "Starting new worker thread for " << _name << " service executor";
return launchServiceWorkerThread([this] {
stdx::unique_lock<stdx::mutex> lk(_mutex);
_numRunningWorkerThreads.addAndFetch(1);
auto numRunningGuard = makeGuard([&] {
_numRunningWorkerThreads.subtractAndFetch(1);
_shutdownCondition.notify_one();
});
_numStartingThreads--;
_numReadyThreads++;
while (_stillRunning.load()) {
_threadWakeup.wait(lk, [&] { return (!_stillRunning.load() || !_readyTasks.empty()); });
if (!_stillRunning.loadRelaxed()) {
break;
}
if (_readyTasks.empty()) {
continue;
}
auto task = std::move(_readyTasks.front());
_readyTasks.pop_front();
_numReadyThreads -= 1;
bool launchReplacement = false;
if (_numReadyThreads + _numStartingThreads < _reservedThreads) {
_numStartingThreads++;
launchReplacement = true;
}
lk.unlock();
if (launchReplacement) {
auto threadStartStatus = _startWorker();
if (!threadStartStatus.isOK()) {
warning() << "Could not start new reserve worker thread: " << threadStartStatus;
}
}
_localWorkQueue.emplace_back(std::move(task));
while (!_localWorkQueue.empty() && _stillRunning.loadRelaxed()) {
_localRecursionDepth = 1;
_localWorkQueue.front()();
_localWorkQueue.pop_front();
}
lk.lock();
if (_numReadyThreads + 1 > _reservedThreads) {
break;
} else {
_numReadyThreads += 1;
}
}
LOG(3) << "Exiting worker thread in " << _name << " service executor";
});
}
bool CryptoBuffer::doCrypt(const char *in, int inlen, bool isEncrypt, QByteArray &out)
{
const int OUTBUF_SIZE = 8*1024;
unsigned char outbuf[OUTBUF_SIZE + EVP_MAX_BLOCK_LENGTH];
EVP_CIPHER_CTX ctx;
EVP_CIPHER_CTX_init(&ctx);
auto ctxGuard = makeGuard([&ctx] { EVP_CIPHER_CTX_cleanup(&ctx); });
if (!EVP_CipherInit_ex(&ctx, d->cipher, NULL, d->key, d->iv, isEncrypt))
return DEBUGRET(false, "EVP_CipherInit_Ex failed");
const unsigned char *ptr = reinterpret_cast<const unsigned char*>(in);
int restlen = inlen;
int outlen;
while (restlen > 0)
{
int readlen = std::min(restlen, OUTBUF_SIZE);
if (!EVP_CipherUpdate(&ctx, outbuf, &outlen, ptr, readlen))
return DEBUGRET(false, "EVP_CipherUpdate failed");
out.append(reinterpret_cast<const char*>(outbuf), outlen);
ptr += readlen;
restlen -= readlen;
}
if (!EVP_CipherFinal_ex(&ctx, outbuf, &outlen))
return DEBUGRET(false, "EVP_CipherFinal_ex failed");
out.append(reinterpret_cast<const char*>(outbuf), outlen);
return true;
}
fbstring errnoStr(int err) {
int savedErrno = errno;
// Ensure that we reset errno upon exit.
auto guard(makeGuard([&] { errno = savedErrno; }));
char buf[1024];
buf[0] = '\0';
fbstring result;
// http://www.kernel.org/doc/man-pages/online/pages/man3/strerror.3.html
#if (_POSIX_C_SOURCE >= 200112L || _XOPEN_SOURCE >= 600 || \
!FOLLY_HAVE_FEATURES_H) && !_GNU_SOURCE
// Using XSI-compatible strerror_r
int r = strerror_r(err, buf, sizeof(buf));
if (r == -1) {
result = to<fbstring>(
"Unknown error ", err,
" (strerror_r failed with error ", errno, ")");
} else {
result.assign(buf);
}
#else
// Using GNU strerror_r
result.assign(strerror_r(err, buf, sizeof(buf)));
#endif
return result;
}
Database* DatabaseHolderImpl::openDb(OperationContext* opCtx, StringData ns, bool* justCreated) {
const StringData dbname = _todb(ns);
invariant(opCtx->lockState()->isDbLockedForMode(dbname, MODE_X));
if (justCreated)
*justCreated = false; // Until proven otherwise.
stdx::unique_lock<SimpleMutex> lk(_m);
// The following will insert a nullptr for dbname, which will treated the same as a non-
// existant database by the get method, yet still counts in getNamesWithConflictingCasing.
if (auto db = _dbs[dbname])
return db;
// We've inserted a nullptr entry for dbname: make sure to remove it on unsuccessful exit.
auto removeDbGuard = makeGuard([this, &lk, dbname] {
if (!lk.owns_lock())
lk.lock();
_dbs.erase(dbname);
});
// Check casing in lock to avoid transient duplicates.
auto duplicates = _getNamesWithConflictingCasing_inlock(dbname);
uassert(ErrorCodes::DatabaseDifferCase,
str::stream() << "db already exists with different case already have: ["
<< *duplicates.cbegin()
<< "] trying to create ["
<< dbname.toString()
<< "]",
duplicates.empty());
// Do the catalog lookup and database creation outside of the scoped lock, because these may
// block. Only one thread can be inside this method for the same DB name, because of the
// requirement for X-lock on the database when we enter. So there is no way we can insert two
// different databases for the same name.
lk.unlock();
StorageEngine* storageEngine = getGlobalServiceContext()->getStorageEngine();
DatabaseCatalogEntry* entry = storageEngine->getDatabaseCatalogEntry(opCtx, dbname);
if (!entry->exists()) {
audit::logCreateDatabase(opCtx->getClient(), dbname);
if (justCreated)
*justCreated = true;
}
auto newDb = stdx::make_unique<DatabaseImpl>(dbname, entry, ++_epoch);
newDb->init(opCtx);
// Finally replace our nullptr entry with the new Database pointer.
removeDbGuard.dismiss();
lk.lock();
auto it = _dbs.find(dbname);
invariant(it != _dbs.end() && it->second == nullptr);
it->second = newDb.release();
invariant(_getNamesWithConflictingCasing_inlock(dbname.toString()).empty());
return it->second;
}
Status CollectionBulkLoaderImpl::_runTaskReleaseResourcesOnFailure(const F& task) noexcept {
AlternativeClientRegion acr(_client);
auto guard = makeGuard([this] { _releaseResources(); });
try {
const auto status = task();
if (status.isOK()) {
guard.dismiss();
}
return status;
} catch (...) {
std::terminate();
}
}
MinVisibleTimestampMap closeCatalog(OperationContext* opCtx) {
invariant(opCtx->lockState()->isW());
MinVisibleTimestampMap minVisibleTimestampMap;
std::vector<std::string> allDbs;
opCtx->getServiceContext()->getStorageEngine()->listDatabases(&allDbs);
auto databaseHolder = DatabaseHolder::get(opCtx);
for (auto&& dbName : allDbs) {
const auto db = databaseHolder->getDb(opCtx, dbName);
for (auto collIt = db->begin(opCtx); collIt != db->end(opCtx); ++collIt) {
auto coll = *collIt;
if (!coll) {
break;
}
OptionalCollectionUUID uuid = coll->uuid();
boost::optional<Timestamp> minVisible = coll->getMinimumVisibleSnapshot();
// If there's a minimum visible, invariant there's also a UUID.
invariant(!minVisible || uuid);
if (uuid && minVisible) {
LOG(1) << "closeCatalog: preserving min visible timestamp. Collection: "
<< coll->ns() << " UUID: " << uuid << " TS: " << minVisible;
minVisibleTimestampMap[*uuid] = *minVisible;
}
}
}
// Need to mark the UUIDCatalog as open if we our closeAll fails, dismissed if successful.
auto reopenOnFailure = makeGuard([opCtx] { UUIDCatalog::get(opCtx).onOpenCatalog(opCtx); });
// Closing UUID Catalog: only lookupNSSByUUID will fall back to using pre-closing state to
// allow authorization for currently unknown UUIDs. This is needed because authorization needs
// to work before acquiring locks, and might otherwise spuriously regard a UUID as unknown
// while reloading the catalog.
UUIDCatalog::get(opCtx).onCloseCatalog(opCtx);
LOG(1) << "closeCatalog: closing UUID catalog";
// Close all databases.
log() << "closeCatalog: closing all databases";
databaseHolder->closeAll(opCtx);
// Close the storage engine's catalog.
log() << "closeCatalog: closing storage engine catalog";
opCtx->getServiceContext()->getStorageEngine()->closeCatalog(opCtx);
reopenOnFailure.dismiss();
return minVisibleTimestampMap;
}
void Subprocess::spawn(
std::unique_ptr<const char*[]> argv,
const char* executable,
const Options& optionsIn,
const std::vector<std::string>* env) {
if (optionsIn.usePath_ && env) {
throw std::invalid_argument(
"usePath() not allowed when overriding environment");
}
// Make a copy, we'll mutate options
Options options(optionsIn);
// On error, close all of the pipes_
auto pipesGuard = makeGuard([&] {
for (auto& p : this->pipes_) {
CHECK_ERR(::close(p.parentFd));
}
});
// Create a pipe to use to receive error information from the child,
// in case it fails before calling exec()
int errFds[2];
int r = ::pipe(errFds);
checkUnixError(r, "pipe");
SCOPE_EXIT {
CHECK_ERR(::close(errFds[0]));
if (errFds[1] >= 0) {
CHECK_ERR(::close(errFds[1]));
}
};
// Ask the child to close the read end of the error pipe.
options.fdActions_[errFds[0]] = CLOSE;
// Set the close-on-exec flag on the write side of the pipe.
// This way the pipe will be closed automatically in the child if execve()
// succeeds. If the exec fails the child can write error information to the
// pipe.
r = fcntl(errFds[1], F_SETFD, FD_CLOEXEC);
checkUnixError(r, "set FD_CLOEXEC");
// Perform the actual work of setting up pipes then forking and
// executing the child.
spawnInternal(std::move(argv), executable, options, env, errFds[1]);
// After spawnInternal() returns the child is alive. We have to be very
// careful about throwing after this point. We are inside the constructor,
// so if we throw the Subprocess object will have never existed, and the
// destructor will never be called.
//
// We should only throw if we got an error via the errFd, and we know the
// child has exited and can be immediately waited for. In all other cases,
// we have no way of cleaning up the child.
// Close writable side of the errFd pipe in the parent process
CHECK_ERR(::close(errFds[1]));
errFds[1] = -1;
// Read from the errFd pipe, to tell if the child ran into any errors before
// calling exec()
readChildErrorPipe(errFds[0], executable);
// We have fully succeeded now, so release the guard on pipes_
pipesGuard.dismiss();
}
Status IndexBuildInterceptor::drainWritesIntoIndex(OperationContext* opCtx,
const InsertDeleteOptions& options,
RecoveryUnit::ReadSource readSource) {
invariant(!opCtx->lockState()->inAWriteUnitOfWork());
// Callers may request to read at a specific timestamp so that no drained writes are timestamped
// earlier than their original write timestamp. Also ensure that leaving this function resets
// the ReadSource to its original value.
auto resetReadSourceGuard =
makeGuard([ opCtx, prevReadSource = opCtx->recoveryUnit()->getTimestampReadSource() ] {
opCtx->recoveryUnit()->abandonSnapshot();
opCtx->recoveryUnit()->setTimestampReadSource(prevReadSource);
});
if (readSource != RecoveryUnit::ReadSource::kUnset) {
opCtx->recoveryUnit()->abandonSnapshot();
opCtx->recoveryUnit()->setTimestampReadSource(readSource);
} else {
resetReadSourceGuard.dismiss();
}
// These are used for logging only.
int64_t totalDeleted = 0;
int64_t totalInserted = 0;
Timer timer;
const int64_t appliedAtStart = _numApplied;
// Set up the progress meter. This will never be completely accurate, because more writes can be
// read from the side writes table than are observed before draining.
static const char* curopMessage = "Index Build: draining writes received during build";
ProgressMeterHolder progress;
{
stdx::unique_lock<Client> lk(*opCtx->getClient());
progress.set(CurOp::get(opCtx)->setProgress_inlock(curopMessage));
}
// Force the progress meter to log at the end of every batch. By default, the progress meter
// only logs after a large number of calls to hit(), but since we batch inserts by up to
// 1000 records, progress would rarely be displayed.
progress->reset(_sideWritesCounter.load() - appliedAtStart /* total */,
3 /* secondsBetween */,
1 /* checkInterval */);
// Buffer operations into batches to insert per WriteUnitOfWork. Impose an upper limit on the
// number of documents and the total size of the batch.
const int32_t kBatchMaxSize = 1000;
const int64_t kBatchMaxBytes = BSONObjMaxInternalSize;
int64_t batchSizeBytes = 0;
std::vector<SideWriteRecord> batch;
batch.reserve(kBatchMaxSize);
// Hold on to documents that would exceed the per-batch memory limit. Always insert this first
// into the next batch.
boost::optional<SideWriteRecord> stashed;
auto cursor = _sideWritesTable->rs()->getCursor(opCtx);
bool atEof = false;
while (!atEof) {
opCtx->checkForInterrupt();
// Stashed records should be inserted into a batch first.
if (stashed) {
invariant(batch.empty());
batch.push_back(std::move(stashed.get()));
stashed.reset();
}
auto record = cursor->next();
if (record) {
RecordId currentRecordId = record->id;
BSONObj docOut = record->data.toBson().getOwned();
// If the total batch size in bytes would be too large, stash this document and let the
// current batch insert.
int objSize = docOut.objsize();
if (batchSizeBytes + objSize > kBatchMaxBytes) {
invariant(!stashed);
// Stash this document to be inserted in the next batch.
stashed.emplace(currentRecordId, std::move(docOut));
} else {
batchSizeBytes += objSize;
batch.emplace_back(currentRecordId, std::move(docOut));
// Continue if there is more room in the batch.
if (batch.size() < kBatchMaxSize) {
continue;
}
}
} else {
atEof = true;
if (batch.empty())
break;
}
invariant(!batch.empty());
cursor->save();
// If we are here, either we have reached the end of the table or the batch is full, so
// insert everything in one WriteUnitOfWork, and delete each inserted document from the side
// writes table.
auto status = writeConflictRetry(opCtx, "index build drain", _indexCatalogEntry->ns(), [&] {
WriteUnitOfWork wuow(opCtx);
for (auto& operation : batch) {
auto status =
_applyWrite(opCtx, operation.second, options, &totalInserted, &totalDeleted);
if (!status.isOK()) {
return status;
}
// Delete the document from the table as soon as it has been inserted into the
// index. This ensures that no key is ever inserted twice and no keys are skipped.
_sideWritesTable->rs()->deleteRecord(opCtx, operation.first);
}
// For rollback to work correctly, these writes need to be timestamped. The actual time
// is not important, as long as it not older than the most recent visible side write.
IndexTimestampHelper::setGhostCommitTimestampForWrite(
opCtx, NamespaceString(_indexCatalogEntry->ns()));
wuow.commit();
return Status::OK();
});
if (!status.isOK()) {
return status;
}
progress->hit(batch.size());
// Lock yielding will only happen if we are holding intent locks.
_tryYield(opCtx);
cursor->restore();
// Account for more writes coming in during a batch.
progress->setTotalWhileRunning(_sideWritesCounter.loadRelaxed() - appliedAtStart);
_numApplied += batch.size();
batch.clear();
batchSizeBytes = 0;
}
progress->finished();
int logLevel = (_numApplied - appliedAtStart > 0) ? 0 : 1;
LOG(logLevel) << "index build: drain applied " << (_numApplied - appliedAtStart)
<< " side writes (inserted: " << totalInserted << ", deleted: " << totalDeleted
<< ") for '" << _indexCatalogEntry->descriptor()->indexName() << "' in "
<< timer.millis() << " ms";
return Status::OK();
}
void BSONElement::jsonStringStream(JsonStringFormat format,
bool includeFieldNames,
int pretty,
std::stringstream& s) const {
if (includeFieldNames)
s << '"' << escape(fieldName()) << "\" : ";
switch (type()) {
case mongo::String:
case Symbol:
s << '"' << escape(string(valuestr(), valuestrsize() - 1)) << '"';
break;
case NumberLong:
if (format == TenGen) {
s << "NumberLong(" << _numberLong() << ")";
} else {
s << "{ \"$numberLong\" : \"" << _numberLong() << "\" }";
}
break;
case NumberInt:
if (format == TenGen) {
s << "NumberInt(" << _numberInt() << ")";
break;
}
case NumberDouble:
if (number() >= -std::numeric_limits<double>::max() &&
number() <= std::numeric_limits<double>::max()) {
auto origPrecision = s.precision();
auto guard = makeGuard([&s, origPrecision]() { s.precision(origPrecision); });
s.precision(16);
s << number();
}
// This is not valid JSON, but according to RFC-4627, "Numeric values that cannot be
// represented as sequences of digits (such as Infinity and NaN) are not permitted." so
// we are accepting the fact that if we have such values we cannot output valid JSON.
else if (std::isnan(number())) {
s << "NaN";
} else if (std::isinf(number())) {
s << (number() > 0 ? "Infinity" : "-Infinity");
} else {
StringBuilder ss;
ss << "Number " << number() << " cannot be represented in JSON";
string message = ss.str();
massert(10311, message.c_str(), false);
}
break;
case NumberDecimal:
if (format == TenGen)
s << "NumberDecimal(\"";
else
s << "{ \"$numberDecimal\" : \"";
// Recognize again that this is not valid JSON according to RFC-4627.
// Also, treat -NaN and +NaN as the same thing for MongoDB.
if (numberDecimal().isNaN()) {
s << "NaN";
} else if (numberDecimal().isInfinite()) {
s << (numberDecimal().isNegative() ? "-Infinity" : "Infinity");
} else {
s << numberDecimal().toString();
}
if (format == TenGen)
s << "\")";
else
s << "\" }";
break;
case mongo::Bool:
s << (boolean() ? "true" : "false");
break;
case jstNULL:
s << "null";
break;
case Undefined:
if (format == Strict) {
s << "{ \"$undefined\" : true }";
} else {
s << "undefined";
}
break;
case Object:
embeddedObject().jsonStringStream(format, pretty, false, s);
break;
case mongo::Array: {
if (embeddedObject().isEmpty()) {
s << "[]";
break;
}
s << "[ ";
BSONObjIterator i(embeddedObject());
BSONElement e = i.next();
if (!e.eoo()) {
int count = 0;
while (1) {
if (pretty) {
s << '\n';
for (int x = 0; x < pretty; x++)
s << " ";
}
if (strtol(e.fieldName(), 0, 10) > count) {
s << "undefined";
} else {
e.jsonStringStream(format, false, pretty ? pretty + 1 : 0, s);
e = i.next();
}
count++;
if (e.eoo())
break;
s << ", ";
}
}
s << " ]";
break;
}
case DBRef: {
if (format == TenGen)
s << "Dbref( ";
else
s << "{ \"$ref\" : ";
s << '"' << valuestr() << "\", ";
if (format != TenGen)
s << "\"$id\" : ";
s << '"' << mongo::OID::from(valuestr() + valuestrsize()) << "\" ";
if (format == TenGen)
s << ')';
else
s << '}';
break;
}
case jstOID:
if (format == TenGen) {
s << "ObjectId( ";
} else {
s << "{ \"$oid\" : ";
}
s << '"' << __oid() << '"';
if (format == TenGen) {
s << " )";
} else {
s << " }";
}
break;
case BinData: {
ConstDataCursor reader(value());
const int len = reader.readAndAdvance<LittleEndian<int>>();
BinDataType type = static_cast<BinDataType>(reader.readAndAdvance<uint8_t>());
s << "{ \"$binary\" : \"";
base64::encode(s, reader.view(), len);
auto origFill = s.fill();
auto origFmtF = s.flags();
auto origWidth = s.width();
auto guard = makeGuard([&s, origFill, origFmtF, origWidth] {
s.fill(origFill);
s.setf(origFmtF);
s.width(origWidth);
});
s.setf(std::ios_base::hex, std::ios_base::basefield);
s << "\", \"$type\" : \"";
s.width(2);
s.fill('0');
s << type;
s << "\" }";
break;
}
case mongo::Date:
if (format == Strict) {
Date_t d = date();
s << "{ \"$date\" : ";
// The two cases in which we cannot convert Date_t::millis to an ISO Date string are
// when the date is too large to format (SERVER-13760), and when the date is before
// the epoch (SERVER-11273). Since Date_t internally stores millis as an unsigned
// long long, despite the fact that it is logically signed (SERVER-8573), this check
// handles both the case where Date_t::millis is too large, and the case where
// Date_t::millis is negative (before the epoch).
if (d.isFormattable()) {
s << "\"" << dateToISOStringLocal(date()) << "\"";
} else {
s << "{ \"$numberLong\" : \"" << d.toMillisSinceEpoch() << "\" }";
}
s << " }";
} else {
s << "Date( ";
if (pretty) {
Date_t d = date();
// The two cases in which we cannot convert Date_t::millis to an ISO Date string
// are when the date is too large to format (SERVER-13760), and when the date is
// before the epoch (SERVER-11273). Since Date_t internally stores millis as an
// unsigned long long, despite the fact that it is logically signed
// (SERVER-8573), this check handles both the case where Date_t::millis is too
// large, and the case where Date_t::millis is negative (before the epoch).
if (d.isFormattable()) {
s << "\"" << dateToISOStringLocal(date()) << "\"";
} else {
// FIXME: This is not parseable by the shell, since it may not fit in a
// float
s << d.toMillisSinceEpoch();
}
} else {
s << date().asInt64();
}
s << " )";
}
break;
case RegEx:
if (format == Strict) {
s << "{ \"$regex\" : \"" << escape(regex());
s << "\", \"$options\" : \"" << regexFlags() << "\" }";
} else {
s << "/" << escape(regex(), true) << "/";
// FIXME Worry about alpha order?
for (const char* f = regexFlags(); *f; ++f) {
switch (*f) {
case 'g':
case 'i':
case 'm':
s << *f;
default:
break;
}
}
}
break;
case CodeWScope: {
BSONObj scope = codeWScopeObject();
if (!scope.isEmpty()) {
s << "{ \"$code\" : \"" << escape(_asCode()) << "\" , "
<< "\"$scope\" : " << scope.jsonString() << " }";
break;
}
}
case Code:
s << "\"" << escape(_asCode()) << "\"";
break;
case bsonTimestamp:
if (format == TenGen) {
s << "Timestamp( " << durationCount<Seconds>(timestampTime().toDurationSinceEpoch())
<< ", " << timestampInc() << " )";
} else {
s << "{ \"$timestamp\" : { \"t\" : "
<< durationCount<Seconds>(timestampTime().toDurationSinceEpoch())
<< ", \"i\" : " << timestampInc() << " } }";
}
break;
case MinKey:
s << "{ \"$minKey\" : 1 }";
break;
case MaxKey:
s << "{ \"$maxKey\" : 1 }";
break;
default:
StringBuilder ss;
ss << "Cannot create a properly formatted JSON string with "
<< "element: " << toString() << " of type: " << type();
string message = ss.str();
massert(10312, message.c_str(), false);
}
}