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/**
* Copyright (C) 2016 MongoDB Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License, version 3,
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* As a special exception, the copyright holders give permission to link the
* code of portions of this program with the OpenSSL library under certain
* conditions as described in each individual source file and distribute
* linked combinations including the program with the OpenSSL library. You
* must comply with the GNU Affero General Public License in all respects
* for all of the code used other than as permitted herein. If you modify
* file(s) with this exception, you may extend this exception to your
* version of the file(s), but you are not obligated to do so. If you do not
* wish to do so, delete this exception statement from your version. If you
* delete this exception statement from all source files in the program,
* then also delete it in the license file.
*/
#define MONGO_LOG_DEFAULT_COMPONENT ::mongo::logger::LogComponent::kStorage
#include "mongo/platform/basic.h"
#include "mongo/db/dbmain.h"
#include <boost/filesystem/operations.hpp>
#include <boost/optional.hpp>
#include <fstream>
#include <iostream>
#include <limits>
#include <signal.h>
#include <string>
#include "mongo/base/init.h"
#include "mongo/base/initializer.h"
#include "mongo/base/status.h"
#include "mongo/client/global_conn_pool.h"
#include "mongo/client/replica_set_monitor.h"
#include "mongo/config.h"
#include "mongo/db/audit.h"
#include "mongo/db/auth/authorization_manager.h"
#include "mongo/db/auth/authorization_manager_global.h"
#include "mongo/db/auth/sasl_options.h"
#include "mongo/db/catalog/collection.h"
#include "mongo/db/catalog/create_collection.h"
#include "mongo/db/catalog/database.h"
#include "mongo/db/catalog/database_catalog_entry.h"
#include "mongo/db/catalog/database_holder.h"
#include "mongo/db/catalog/health_log.h"
#include "mongo/db/catalog/index_catalog.h"
#include "mongo/db/catalog/index_key_validate.h"
#include "mongo/db/catalog/uuid_catalog.h"
#include "mongo/db/client.h"
#include "mongo/db/clientcursor.h"
#include "mongo/db/commands/feature_compatibility_version.h"
#include "mongo/db/concurrency/d_concurrency.h"
#include "mongo/db/concurrency/lock_state.h"
#include "mongo/db/concurrency/write_conflict_exception.h"
#include "mongo/db/db_raii.h"
#include "mongo/db/dbdirectclient.h"
#include "mongo/db/dbhelpers.h"
#include "mongo/db/dbmessage.h"
#include "mongo/db/exec/working_set_common.h"
#include "mongo/db/free_mon/free_mon_mongod.h"
#include "mongo/db/ftdc/ftdc_mongod.h"
#include "mongo/db/global_settings.h"
#include "mongo/db/index_names.h"
#include "mongo/db/index_rebuilder.h"
#include "mongo/db/initialize_server_global_state.h"
#include "mongo/db/initialize_snmp.h"
#include "mongo/db/introspect.h"
#include "mongo/db/json.h"
#include "mongo/db/keys_collection_client_direct.h"
#include "mongo/db/keys_collection_client_sharded.h"
#include "mongo/db/keys_collection_manager.h"
#include "mongo/db/kill_sessions.h"
#include "mongo/db/kill_sessions_local.h"
#include "mongo/db/log_process_details.h"
#include "mongo/db/logical_clock.h"
#include "mongo/db/logical_session_cache.h"
#include "mongo/db/logical_session_cache_factory_mongod.h"
#include "mongo/db/logical_time_metadata_hook.h"
#include "mongo/db/logical_time_validator.h"
#include "mongo/db/mongod_options.h"
#include "mongo/db/op_observer_impl.h"
#include "mongo/db/op_observer_registry.h"
#include "mongo/db/operation_context.h"
#include "mongo/db/periodic_runner_job_abort_expired_transactions.h"
#include "mongo/db/periodic_runner_job_decrease_snapshot_cache_pressure.h"
#include "mongo/db/query/internal_plans.h"
#include "mongo/db/repair_database_and_check_version.h"
#include "mongo/db/repl/drop_pending_collection_reaper.h"
#include "mongo/db/repl/oplog.h"
#include "mongo/db/repl/repl_settings.h"
#include "mongo/db/repl/replication_consistency_markers_impl.h"
#include "mongo/db/repl/replication_coordinator.h"
#include "mongo/db/repl/replication_coordinator_external_state_impl.h"
#include "mongo/db/repl/replication_coordinator_impl.h"
#include "mongo/db/repl/replication_process.h"
#include "mongo/db/repl/replication_recovery.h"
#include "mongo/db/repl/storage_interface_impl.h"
#include "mongo/db/repl/topology_coordinator.h"
#include "mongo/db/s/balancer/balancer.h"
#include "mongo/db/s/config/sharding_catalog_manager.h"
#include "mongo/db/s/config_server_op_observer.h"
#include "mongo/db/s/shard_server_op_observer.h"
#include "mongo/db/s/sharded_connection_info.h"
#include "mongo/db/s/sharding_initialization_mongod.h"
#include "mongo/db/s/sharding_state.h"
#include "mongo/db/s/sharding_state_recovery.h"
#include "mongo/db/server_options.h"
#include "mongo/db/server_parameters.h"
#include "mongo/db/service_context.h"
#include "mongo/db/service_entry_point_mongod.h"
#include "mongo/db/session_catalog.h"
#include "mongo/db/session_killer.h"
#include "mongo/db/startup_warnings_mongod.h"
#include "mongo/db/stats/counters.h"
#include "mongo/db/storage/encryption_hooks.h"
#include "mongo/db/storage/storage_engine.h"
#include "mongo/db/storage/storage_engine_init.h"
#include "mongo/db/storage/storage_options.h"
#include "mongo/db/system_index.h"
#include "mongo/db/ttl.h"
#include "mongo/db/wire_version.h"
#include "mongo/executor/network_connection_hook.h"
#include "mongo/executor/network_interface_factory.h"
#include "mongo/executor/network_interface_thread_pool.h"
#include "mongo/executor/thread_pool_task_executor.h"
#include "mongo/platform/process_id.h"
#include "mongo/rpc/metadata/egress_metadata_hook_list.h"
#include "mongo/s/client/shard_registry.h"
#include "mongo/s/grid.h"
#include "mongo/s/sharding_initialization.h"
#include "mongo/scripting/dbdirectclient_factory.h"
#include "mongo/scripting/engine.h"
#include "mongo/stdx/future.h"
#include "mongo/stdx/memory.h"
#include "mongo/stdx/thread.h"
#include "mongo/transport/transport_layer_manager.h"
#include "mongo/util/assert_util.h"
#include "mongo/util/background.h"
#include "mongo/util/cmdline_utils/censor_cmdline.h"
#include "mongo/util/concurrency/idle_thread_block.h"
#include "mongo/util/concurrency/thread_name.h"
#include "mongo/util/exception_filter_win32.h"
#include "mongo/util/exit.h"
#include "mongo/util/fail_point_service.h"
#include "mongo/util/fast_clock_source_factory.h"
#include "mongo/util/log.h"
#include "mongo/util/net/socket_utils.h"
#include "mongo/util/net/ssl_manager.h"
#include "mongo/util/ntservice.h"
#include "mongo/util/options_parser/startup_options.h"
#include "mongo/util/periodic_runner.h"
#include "mongo/util/periodic_runner_factory.h"
#include "mongo/util/quick_exit.h"
#include "mongo/util/ramlog.h"
#include "mongo/util/scopeguard.h"
#include "mongo/util/sequence_util.h"
#include "mongo/util/signal_handlers.h"
#include "mongo/util/stacktrace.h"
#include "mongo/util/startup_test.h"
#include "mongo/util/text.h"
#include "mongo/util/time_support.h"
#include "mongo/util/version.h"
#ifdef MONGO_CONFIG_SSL
#include "mongo/util/net/ssl_options.h"
#endif
#if !defined(_WIN32)
#include <sys/file.h>
#endif
namespace mongo {
using logger::LogComponent;
using std::endl;
namespace {
const NamespaceString startupLogCollectionName("local.startup_log");
const NamespaceString kSystemReplSetCollection("local.system.replset");
#ifdef _WIN32
const ntservice::NtServiceDefaultStrings defaultServiceStrings = {
L"MongoDB", L"MongoDB", L"MongoDB Server"};
#endif
void logStartup(OperationContext* opCtx) {
BSONObjBuilder toLog;
std::stringstream id;
id << getHostNameCached() << "-" << jsTime().asInt64();
toLog.append("_id", id.str());
toLog.append("hostname", getHostNameCached());
toLog.appendTimeT("startTime", time(0));
toLog.append("startTimeLocal", dateToCtimeString(Date_t::now()));
toLog.append("cmdLine", serverGlobalParams.parsedOpts);
toLog.append("pid", ProcessId::getCurrent().asLongLong());
BSONObjBuilder buildinfo(toLog.subobjStart("buildinfo"));
VersionInfoInterface::instance().appendBuildInfo(&buildinfo);
appendStorageEngineList(opCtx->getServiceContext(), &buildinfo);
buildinfo.doneFast();
BSONObj o = toLog.obj();
Lock::GlobalWrite lk(opCtx);
AutoGetOrCreateDb autoDb(opCtx, startupLogCollectionName.db(), mongo::MODE_X);
Database* db = autoDb.getDb();
Collection* collection = db->getCollection(opCtx, startupLogCollectionName);
WriteUnitOfWork wunit(opCtx);
if (!collection) {
BSONObj options = BSON("capped" << true << "size" << 10 * 1024 * 1024);
repl::UnreplicatedWritesBlock uwb(opCtx);
CollectionOptions collectionOptions;
uassertStatusOK(
collectionOptions.parse(options, CollectionOptions::ParseKind::parseForCommand));
uassertStatusOK(
Database::userCreateNS(opCtx, db, startupLogCollectionName.ns(), collectionOptions));
collection = db->getCollection(opCtx, startupLogCollectionName);
}
invariant(collection);
OpDebug* const nullOpDebug = nullptr;
uassertStatusOK(collection->insertDocument(opCtx, InsertStatement(o), nullOpDebug, false));
wunit.commit();
}
/**
* Checks if this server was started without --replset but has a config in local.system.replset
* (meaning that this is probably a replica set member started in stand-alone mode).
*
* @returns the number of documents in local.system.replset or 0 if this was started with
* --replset.
*/
unsigned long long checkIfReplMissingFromCommandLine(OperationContext* opCtx) {
// This is helpful for the query below to work as you can't open files when readlocked
Lock::GlobalWrite lk(opCtx);
if (!repl::ReplicationCoordinator::get(opCtx)->getSettings().usingReplSets()) {
DBDirectClient c(opCtx);
return c.count(kSystemReplSetCollection.ns());
}
return 0;
}
void initWireSpec() {
WireSpec& spec = WireSpec::instance();
// The featureCompatibilityVersion behavior defaults to the downgrade behavior while the
// in-memory version is unset.
spec.incomingInternalClient.minWireVersion = RELEASE_2_4_AND_BEFORE;
spec.incomingInternalClient.maxWireVersion = LATEST_WIRE_VERSION;
spec.outgoing.minWireVersion = RELEASE_2_4_AND_BEFORE;
spec.outgoing.maxWireVersion = LATEST_WIRE_VERSION;
spec.isInternalClient = true;
}
MONGO_FAIL_POINT_DEFINE(shutdownAtStartup);
ExitCode _initAndListen(int listenPort) {
Client::initThread("initandlisten");
initWireSpec();
auto serviceContext = getGlobalServiceContext();
serviceContext->setFastClockSource(FastClockSourceFactory::create(Milliseconds(10)));
auto opObserverRegistry = stdx::make_unique<OpObserverRegistry>();
opObserverRegistry->addObserver(stdx::make_unique<OpObserverImpl>());
opObserverRegistry->addObserver(stdx::make_unique<UUIDCatalogObserver>());
if (serverGlobalParams.clusterRole == ClusterRole::ShardServer) {
opObserverRegistry->addObserver(stdx::make_unique<ShardServerOpObserver>());
} else if (serverGlobalParams.clusterRole == ClusterRole::ConfigServer) {
opObserverRegistry->addObserver(stdx::make_unique<ConfigServerOpObserver>());
}
setupFreeMonitoringOpObserver(opObserverRegistry.get());
serviceContext->setOpObserver(std::move(opObserverRegistry));
DBDirectClientFactory::get(serviceContext).registerImplementation([](OperationContext* opCtx) {
return std::unique_ptr<DBClientBase>(new DBDirectClient(opCtx));
});
const repl::ReplSettings& replSettings =
repl::ReplicationCoordinator::get(serviceContext)->getSettings();
{
ProcessId pid = ProcessId::getCurrent();
LogstreamBuilder l = log(LogComponent::kControl);
l << "MongoDB starting : pid=" << pid << " port=" << serverGlobalParams.port
<< " dbpath=" << storageGlobalParams.dbpath;
const bool is32bit = sizeof(int*) == 4;
l << (is32bit ? " 32" : " 64") << "-bit host=" << getHostNameCached() << endl;
}
DEV log(LogComponent::kControl) << "DEBUG build (which is slower)" << endl;
#if defined(_WIN32)
VersionInfoInterface::instance().logTargetMinOS();
#endif
logProcessDetails();
serviceContext->setServiceEntryPoint(
stdx::make_unique<ServiceEntryPointMongod>(serviceContext));
{
auto tl =
transport::TransportLayerManager::createWithConfig(&serverGlobalParams, serviceContext);
auto res = tl->setup();
if (!res.isOK()) {
error() << "Failed to set up listener: " << res;
return EXIT_NET_ERROR;
}
serviceContext->setTransportLayer(std::move(tl));
}
initializeStorageEngine(serviceContext, StorageEngineInitFlags::kNone);
#ifdef MONGO_CONFIG_WIREDTIGER_ENABLED
if (EncryptionHooks::get(serviceContext)->restartRequired()) {
exitCleanly(EXIT_CLEAN);
}
#endif
// Warn if we detect configurations for multiple registered storage engines in the same
// configuration file/environment.
if (serverGlobalParams.parsedOpts.hasField("storage")) {
BSONElement storageElement = serverGlobalParams.parsedOpts.getField("storage");
invariant(storageElement.isABSONObj());
for (auto&& e : storageElement.Obj()) {
// Ignore if field name under "storage" matches current storage engine.
if (storageGlobalParams.engine == e.fieldName()) {
continue;
}
// Warn if field name matches non-active registered storage engine.
if (isRegisteredStorageEngine(serviceContext, e.fieldName())) {
warning() << "Detected configuration for non-active storage engine "
<< e.fieldName() << " when current storage engine is "
<< storageGlobalParams.engine;
}
}
}
// Disallow running a storage engine that doesn't support capped collections with --profile
if (!getGlobalServiceContext()->getStorageEngine()->supportsCappedCollections() &&
serverGlobalParams.defaultProfile != 0) {
log() << "Running " << storageGlobalParams.engine << " with profiling is not supported. "
<< "Make sure you are not using --profile.";
exitCleanly(EXIT_BADOPTIONS);
}
// Disallow running WiredTiger with --nojournal in a replica set
if (storageGlobalParams.engine == "wiredTiger" && !storageGlobalParams.dur &&
replSettings.usingReplSets()) {
log() << "Running wiredTiger without journaling in a replica set is not "
<< "supported. Make sure you are not using --nojournal and that "
<< "storage.journal.enabled is not set to 'false'.";
exitCleanly(EXIT_BADOPTIONS);
}
logMongodStartupWarnings(storageGlobalParams, serverGlobalParams, serviceContext);
#ifdef MONGO_CONFIG_SSL
if (sslGlobalParams.sslAllowInvalidCertificates &&
((serverGlobalParams.clusterAuthMode.load() == ServerGlobalParams::ClusterAuthMode_x509) ||
sequenceContains(saslGlobalParams.authenticationMechanisms, "MONGODB-X509"))) {
log() << "** WARNING: While invalid X509 certificates may be used to" << startupWarningsLog;
log() << "** connect to this server, they will not be considered"
<< startupWarningsLog;
log() << "** permissible for authentication." << startupWarningsLog;
log() << startupWarningsLog;
}
#endif
{
std::stringstream ss;
ss << endl;
ss << "*********************************************************************" << endl;
ss << " ERROR: dbpath (" << storageGlobalParams.dbpath << ") does not exist." << endl;
ss << " Create this directory or give existing directory in --dbpath." << endl;
ss << " See http://dochub.mongodb.org/core/startingandstoppingmongo" << endl;
ss << "*********************************************************************" << endl;
uassert(10296, ss.str().c_str(), boost::filesystem::exists(storageGlobalParams.dbpath));
}
initializeSNMP();
if (!storageGlobalParams.readOnly) {
boost::filesystem::remove_all(storageGlobalParams.dbpath + "/_tmp/");
}
if (mongodGlobalParams.scriptingEnabled) {
ScriptEngine::setup();
}
auto startupOpCtx = serviceContext->makeOperationContext(&cc());
bool canCallFCVSetIfCleanStartup =
!storageGlobalParams.readOnly && (storageGlobalParams.engine != "devnull");
if (canCallFCVSetIfCleanStartup && !replSettings.usingReplSets()) {
Lock::GlobalWrite lk(startupOpCtx.get());
FeatureCompatibilityVersion::setIfCleanStartup(startupOpCtx.get(),
repl::StorageInterface::get(serviceContext));
}
auto swNonLocalDatabases = repairDatabasesAndCheckVersion(startupOpCtx.get());
if (!swNonLocalDatabases.isOK()) {
// SERVER-31611 introduced a return value to `repairDatabasesAndCheckVersion`. Previously,
// a failing condition would fassert. SERVER-31611 covers a case where the binary (3.6) is
// refusing to start up because it refuses acknowledgement of FCV 3.2 and requires the
// user to start up with an older binary. Thus shutting down the server must leave the
// datafiles in a state that the older binary can start up. This requires going through a
// clean shutdown.
//
// The invariant is *not* a statement that `repairDatabasesAndCheckVersion` must return
// `MustDowngrade`. Instead, it is meant as a guardrail to protect future developers from
// accidentally buying into this behavior. New errors that are returned from the method
// may or may not want to go through a clean shutdown, and they likely won't want the
// program to return an exit code of `EXIT_NEED_DOWNGRADE`.
severe(LogComponent::kControl) << "** IMPORTANT: "
<< swNonLocalDatabases.getStatus().reason();
invariant(swNonLocalDatabases == ErrorCodes::MustDowngrade);
exitCleanly(EXIT_NEED_DOWNGRADE);
}
// Assert that the in-memory featureCompatibilityVersion parameter has been explicitly set. If
// we are part of a replica set and are started up with no data files, we do not set the
// featureCompatibilityVersion until a primary is chosen. For this case, we expect the in-memory
// featureCompatibilityVersion parameter to still be uninitialized until after startup.
if (canCallFCVSetIfCleanStartup &&
(!replSettings.usingReplSets() || swNonLocalDatabases.getValue())) {
invariant(serverGlobalParams.featureCompatibility.isVersionInitialized());
}
if (storageGlobalParams.upgrade) {
log() << "finished checking dbs";
exitCleanly(EXIT_CLEAN);
}
// Start up health log writer thread.
HealthLog::get(startupOpCtx.get()).startup();
auto const globalAuthzManager = AuthorizationManager::get(serviceContext);
uassertStatusOK(globalAuthzManager->initialize(startupOpCtx.get()));
// This is for security on certain platforms (nonce generation)
srand((unsigned)(curTimeMicros64()) ^ (unsigned(uintptr_t(&startupOpCtx))));
if (globalAuthzManager->shouldValidateAuthSchemaOnStartup()) {
Status status = verifySystemIndexes(startupOpCtx.get());
if (!status.isOK()) {
log() << redact(status);
if (status == ErrorCodes::AuthSchemaIncompatible) {
exitCleanly(EXIT_NEED_UPGRADE);
} else if (status == ErrorCodes::NotMaster) {
// Try creating the indexes if we become master. If we do not become master,
// the master will create the indexes and we will replicate them.
} else {
quickExit(EXIT_FAILURE);
}
}
// SERVER-14090: Verify that auth schema version is schemaVersion26Final.
int foundSchemaVersion;
status =
globalAuthzManager->getAuthorizationVersion(startupOpCtx.get(), &foundSchemaVersion);
if (!status.isOK()) {
log() << "Auth schema version is incompatible: "
<< "User and role management commands require auth data to have "
<< "at least schema version " << AuthorizationManager::schemaVersion26Final
<< " but startup could not verify schema version: " << status;
exitCleanly(EXIT_NEED_UPGRADE);
}
if (foundSchemaVersion <= AuthorizationManager::schemaVersion26Final) {
log() << "This server is using MONGODB-CR, an authentication mechanism which "
<< "has been removed from MongoDB 4.0. In order to upgrade the auth schema, "
<< "first downgrade MongoDB binaries to version 3.6 and then run the "
<< "authSchemaUpgrade command. "
<< "See http://dochub.mongodb.org/core/3.0-upgrade-to-scram-sha-1";
exitCleanly(EXIT_NEED_UPGRADE);
}
} else if (globalAuthzManager->isAuthEnabled()) {
error() << "Auth must be disabled when starting without auth schema validation";
exitCleanly(EXIT_BADOPTIONS);
} else {
// If authSchemaValidation is disabled and server is running without auth,
// warn the user and continue startup without authSchema metadata checks.
log() << startupWarningsLog;
log() << "** WARNING: Startup auth schema validation checks are disabled for the "
"database."
<< startupWarningsLog;
log() << "** This mode should only be used to manually repair corrupted auth "
"data."
<< startupWarningsLog;
}
// This function may take the global lock.
auto shardingInitialized =
uassertStatusOK(ShardingState::get(startupOpCtx.get())
->initializeShardingAwarenessIfNeeded(startupOpCtx.get()));
if (shardingInitialized) {
waitForShardRegistryReload(startupOpCtx.get()).transitional_ignore();
}
auto storageEngine = serviceContext->getStorageEngine();
invariant(storageEngine);
if (!storageGlobalParams.readOnly) {
if (storageEngine->supportsCappedCollections()) {
logStartup(startupOpCtx.get());
}
startMongoDFTDC();
startFreeMonitoring(serviceContext);
restartInProgressIndexesFromLastShutdown(startupOpCtx.get());
if (serverGlobalParams.clusterRole == ClusterRole::ShardServer) {
// Note: For replica sets, ShardingStateRecovery happens on transition to primary.
if (!repl::ReplicationCoordinator::get(startupOpCtx.get())->isReplEnabled()) {
uassertStatusOK(ShardingStateRecovery::recover(startupOpCtx.get()));
}
} else if (serverGlobalParams.clusterRole == ClusterRole::ConfigServer) {
uassertStatusOK(
initializeGlobalShardingStateForMongod(startupOpCtx.get(),
ConnectionString::forLocal(),
kDistLockProcessIdForConfigServer));
Balancer::create(startupOpCtx->getServiceContext());
ShardingCatalogManager::create(
startupOpCtx->getServiceContext(),
makeShardingTaskExecutor(executor::makeNetworkInterface("AddShard-TaskExecutor")));
} else if (replSettings.usingReplSets()) { // standalone replica set
auto keysCollectionClient = stdx::make_unique<KeysCollectionClientDirect>();
auto keyManager = std::make_shared<KeysCollectionManager>(
KeysCollectionManager::kKeyManagerPurposeString,
std::move(keysCollectionClient),
Seconds(KeysRotationIntervalSec));
keyManager->startMonitoring(startupOpCtx->getServiceContext());
LogicalTimeValidator::set(startupOpCtx->getServiceContext(),
stdx::make_unique<LogicalTimeValidator>(keyManager));
}
repl::ReplicationCoordinator::get(startupOpCtx.get())->startup(startupOpCtx.get());
const unsigned long long missingRepl =
checkIfReplMissingFromCommandLine(startupOpCtx.get());
if (missingRepl) {
log() << startupWarningsLog;
log() << "** WARNING: mongod started without --replSet yet " << missingRepl
<< " documents are present in local.system.replset." << startupWarningsLog;
log() << "** Database contents may appear inconsistent with the oplog and may "
"appear to not contain"
<< startupWarningsLog;
log() << "** writes that were visible when this node was running as part of a "
"replica set."
<< startupWarningsLog;
log() << "** Restart with --replSet unless you are doing maintenance and no "
"other clients are connected."
<< startupWarningsLog;
log() << "** The TTL collection monitor will not start because of this."
<< startupWarningsLog;
log() << "** ";
log() << " For more info see http://dochub.mongodb.org/core/ttlcollections";
log() << startupWarningsLog;
} else {
startTTLBackgroundJob();
}
if (replSettings.usingReplSets() || !internalValidateFeaturesAsMaster) {
serverGlobalParams.validateFeaturesAsMaster.store(false);
}
}
startClientCursorMonitor();
PeriodicTask::startRunningPeriodicTasks();
// Set up the periodic runner for background job execution
auto runner = makePeriodicRunner(serviceContext);
runner->startup();
serviceContext->setPeriodicRunner(std::move(runner));
SessionKiller::set(serviceContext,
std::make_shared<SessionKiller>(serviceContext, killSessionsLocal));
// Start up a background task to periodically check for and kill expired transactions; and a
// background task to periodically check for and decrease cache pressure by decreasing the
// target size setting for the storage engine's window of available snapshots.
//
// Only do this on storage engines supporting snapshot reads, which hold resources we wish to
// release periodically in order to avoid storage cache pressure build up.
if (storageEngine->supportsReadConcernSnapshot()) {
startPeriodicThreadToAbortExpiredTransactions(serviceContext);
startPeriodicThreadToDecreaseSnapshotHistoryCachePressure(serviceContext);
}
// Set up the logical session cache
LogicalSessionCacheServer kind = LogicalSessionCacheServer::kStandalone;
if (serverGlobalParams.clusterRole == ClusterRole::ShardServer) {
kind = LogicalSessionCacheServer::kSharded;
} else if (serverGlobalParams.clusterRole == ClusterRole::ConfigServer) {
kind = LogicalSessionCacheServer::kConfigServer;
} else if (replSettings.usingReplSets()) {
kind = LogicalSessionCacheServer::kReplicaSet;
}
auto sessionCache = makeLogicalSessionCacheD(serviceContext, kind);
LogicalSessionCache::set(serviceContext, std::move(sessionCache));
// MessageServer::run will return when exit code closes its socket and we don't need the
// operation context anymore
startupOpCtx.reset();
auto start = serviceContext->getServiceExecutor()->start();
if (!start.isOK()) {
error() << "Failed to start the service executor: " << start;
return EXIT_NET_ERROR;
}
start = serviceContext->getTransportLayer()->start();
if (!start.isOK()) {
error() << "Failed to start the listener: " << start.toString();
return EXIT_NET_ERROR;
}
serviceContext->notifyStartupComplete();
#ifndef _WIN32
mongo::signalForkSuccess();
#else
if (ntservice::shouldStartService()) {
ntservice::reportStatus(SERVICE_RUNNING);
log() << "Service running";
}
#endif
if (MONGO_FAIL_POINT(shutdownAtStartup)) {
log() << "starting clean exit via failpoint";
exitCleanly(EXIT_CLEAN);
}
MONGO_IDLE_THREAD_BLOCK;
return waitForShutdown();
}
ExitCode initAndListen(int listenPort) {
try {
return _initAndListen(listenPort);
} catch (DBException& e) {
log() << "exception in initAndListen: " << e.toString() << ", terminating";
return EXIT_UNCAUGHT;
} catch (std::exception& e) {
log() << "exception in initAndListen std::exception: " << e.what() << ", terminating";
return EXIT_UNCAUGHT;
} catch (int& n) {
log() << "exception in initAndListen int: " << n << ", terminating";
return EXIT_UNCAUGHT;
} catch (...) {
log() << "exception in initAndListen, terminating";
return EXIT_UNCAUGHT;
}
}
#if defined(_WIN32)
ExitCode initService() {
return initAndListen(serverGlobalParams.port);
}
#endif
MONGO_INITIALIZER_GENERAL(ForkServer, ("EndStartupOptionHandling"), ("default"))
(InitializerContext* context) {
mongo::forkServerOrDie();
return Status::OK();
}
/*
* This function should contain the startup "actions" that we take based on the startup config.
* It is intended to separate the actions from "storage" and "validation" of our startup
* configuration.
*/
void startupConfigActions(const std::vector<std::string>& args) {
// The "command" option is deprecated. For backward compatibility, still support the "run"
// and "dbppath" command. The "run" command is the same as just running mongod, so just
// falls through.
if (moe::startupOptionsParsed.count("command")) {
const auto command = moe::startupOptionsParsed["command"].as<std::vector<std::string>>();
if (command[0].compare("dbpath") == 0) {
std::cout << storageGlobalParams.dbpath << endl;
quickExit(EXIT_SUCCESS);
}
if (command[0].compare("run") != 0) {
std::cout << "Invalid command: " << command[0] << endl;
printMongodHelp(moe::startupOptions);
quickExit(EXIT_FAILURE);
}
if (command.size() > 1) {
std::cout << "Too many parameters to 'run' command" << endl;
printMongodHelp(moe::startupOptions);
quickExit(EXIT_FAILURE);
}
}
#ifdef _WIN32
ntservice::configureService(initService,
moe::startupOptionsParsed,
defaultServiceStrings,
std::vector<std::string>(),
args);
#endif // _WIN32
#ifdef __linux__
if (moe::startupOptionsParsed.count("shutdown") &&
moe::startupOptionsParsed["shutdown"].as<bool>() == true) {
bool failed = false;
std::string name =
(boost::filesystem::path(storageGlobalParams.dbpath) / "mongod.lock").string();
if (!boost::filesystem::exists(name) || boost::filesystem::file_size(name) == 0)
failed = true;
pid_t pid;
std::string procPath;
if (!failed) {
try {
std::ifstream f(name.c_str());
f >> pid;
procPath = (str::stream() << "/proc/" << pid);
if (!boost::filesystem::exists(procPath))
failed = true;
} catch (const std::exception& e) {
std::cerr << "Error reading pid from lock file [" << name << "]: " << e.what()
<< endl;
failed = true;
}
}
if (failed) {
std::cerr << "There doesn't seem to be a server running with dbpath: "
<< storageGlobalParams.dbpath << std::endl;
quickExit(EXIT_FAILURE);
}
std::cout << "killing process with pid: " << pid << endl;
int ret = kill(pid, SIGTERM);
if (ret) {
int e = errno;
std::cerr << "failed to kill process: " << errnoWithDescription(e) << endl;
quickExit(EXIT_FAILURE);
}
while (boost::filesystem::exists(procPath)) {
sleepsecs(1);
}
quickExit(EXIT_SUCCESS);
}
#endif
}
auto makeReplicationExecutor(ServiceContext* serviceContext) {
ThreadPool::Options tpOptions;
tpOptions.poolName = "replexec";
tpOptions.maxThreads = 50;
tpOptions.onCreateThread = [](const std::string& threadName) {
Client::initThread(threadName.c_str());
};
auto hookList = stdx::make_unique<rpc::EgressMetadataHookList>();
hookList->addHook(stdx::make_unique<rpc::LogicalTimeMetadataHook>(serviceContext));
return stdx::make_unique<executor::ThreadPoolTaskExecutor>(
stdx::make_unique<ThreadPool>(tpOptions),
executor::makeNetworkInterface("Replication", nullptr, std::move(hookList)));
}
MONGO_INITIALIZER_WITH_PREREQUISITES(CreateReplicationManager,
("SSLManager", "ServiceContext", "default"))
(InitializerContext* context) {
auto serviceContext = getGlobalServiceContext();
repl::StorageInterface::set(serviceContext, stdx::make_unique<repl::StorageInterfaceImpl>());
auto storageInterface = repl::StorageInterface::get(serviceContext);
auto consistencyMarkers =
stdx::make_unique<repl::ReplicationConsistencyMarkersImpl>(storageInterface);
auto recovery = stdx::make_unique<repl::ReplicationRecoveryImpl>(storageInterface,
consistencyMarkers.get());
repl::ReplicationProcess::set(
serviceContext,
stdx::make_unique<repl::ReplicationProcess>(
storageInterface, std::move(consistencyMarkers), std::move(recovery)));
auto replicationProcess = repl::ReplicationProcess::get(serviceContext);
repl::DropPendingCollectionReaper::set(
serviceContext, stdx::make_unique<repl::DropPendingCollectionReaper>(storageInterface));
auto dropPendingCollectionReaper = repl::DropPendingCollectionReaper::get(serviceContext);
repl::TopologyCoordinator::Options topoCoordOptions;
topoCoordOptions.maxSyncSourceLagSecs = Seconds(repl::maxSyncSourceLagSecs);
topoCoordOptions.clusterRole = serverGlobalParams.clusterRole;
auto logicalClock = stdx::make_unique<LogicalClock>(serviceContext);
LogicalClock::set(serviceContext, std::move(logicalClock));
auto replCoord = stdx::make_unique<repl::ReplicationCoordinatorImpl>(
serviceContext,
getGlobalReplSettings(),
stdx::make_unique<repl::ReplicationCoordinatorExternalStateImpl>(
serviceContext, dropPendingCollectionReaper, storageInterface, replicationProcess),
makeReplicationExecutor(serviceContext),
stdx::make_unique<repl::TopologyCoordinator>(topoCoordOptions),
replicationProcess,
storageInterface,
static_cast<int64_t>(curTimeMillis64()));
repl::ReplicationCoordinator::set(serviceContext, std::move(replCoord));
repl::setOplogCollectionName(serviceContext);
return Status::OK();
}
#ifdef MONGO_CONFIG_SSL
MONGO_INITIALIZER_GENERAL(setSSLManagerType, MONGO_NO_PREREQUISITES, ("SSLManager"))
(InitializerContext* context) {
isSSLServer = true;
return Status::OK();
}
#endif
#if !defined(__has_feature)
#define __has_feature(x) 0
#endif
// NOTE: This function may be called at any time after registerShutdownTask is called below. It
// must not depend on the prior execution of mongo initializers or the existence of threads.
void shutdownTask() {
Client::initThreadIfNotAlready();
auto const client = Client::getCurrent();
auto const serviceContext = client->getServiceContext();
// Shutdown the TransportLayer so that new connections aren't accepted
if (auto tl = serviceContext->getTransportLayer()) {
log(LogComponent::kNetwork) << "shutdown: going to close listening sockets...";
tl->shutdown();
}
// Shut down the global dbclient pool so callers stop waiting for connections.
globalConnPool.shutdown();
if (serviceContext->getStorageEngine()) {
ServiceContext::UniqueOperationContext uniqueOpCtx;
OperationContext* opCtx = client->getOperationContext();
if (!opCtx) {
uniqueOpCtx = client->makeOperationContext();
opCtx = uniqueOpCtx.get();
}
// This can wait a long time while we drain the secondary's apply queue, especially if it
// is building an index.
repl::ReplicationCoordinator::get(serviceContext)->shutdown(opCtx);
ShardingState::get(serviceContext)->shutDown(opCtx);
// Destroy all stashed transaction resources, in order to release locks.
SessionKiller::Matcher matcherAllSessions(
KillAllSessionsByPatternSet{makeKillAllSessionsByPattern(opCtx)});
killSessionsLocalKillTransactions(opCtx, matcherAllSessions);
}
serviceContext->setKillAllOperations();
// Shut down the background periodic task runner
if (auto runner = serviceContext->getPeriodicRunner()) {
runner->shutdown();
}
ReplicaSetMonitor::shutdown();
if (auto sr = Grid::get(serviceContext)->shardRegistry()) {
sr->shutdown();
}
// Validator shutdown must be called after setKillAllOperations is called. Otherwise, this can
// deadlock.
if (auto validator = LogicalTimeValidator::get(serviceContext)) {
validator->shutDown();
}
#if __has_feature(address_sanitizer)
// When running under address sanitizer, we get false positive leaks due to disorder around
// the lifecycle of a connection and request. When we are running under ASAN, we try a lot
// harder to dry up the server from active connections before going on to really shut down.
// Shutdown the Service Entry Point and its sessions and give it a grace period to complete.
if (auto sep = serviceContext->getServiceEntryPoint()) {
if (!sep->shutdown(Seconds(10))) {
log(LogComponent::kNetwork)
<< "Service entry point failed to shutdown within timelimit.";
}
}
// Shutdown and wait for the service executor to exit
if (auto svcExec = serviceContext->getServiceExecutor()) {
Status status = svcExec->shutdown(Seconds(5));
if (!status.isOK()) {
log(LogComponent::kNetwork) << "Service executor failed to shutdown within timelimit: "
<< status.reason();
}
}
#endif
stopFreeMonitoring();
// Shutdown Full-Time Data Capture
stopMongoDFTDC();
HealthLog::get(serviceContext).shutdown();
// We should always be able to acquire the global lock at shutdown.
//
// TODO: This call chain uses the locker directly, because we do not want to start an
// operation context, which also instantiates a recovery unit. Also, using the
// lockGlobalBegin/lockGlobalComplete sequence, we avoid taking the flush lock.
//
// For a Windows service, dbexit does not call exit(), so we must leak the lock outside
// of this function to prevent any operations from running that need a lock.
//
LockerImpl* globalLocker = new LockerImpl();
LockResult result = globalLocker->lockGlobalBegin(MODE_X, Date_t::max());
if (result == LOCK_WAITING) {
result = globalLocker->lockGlobalComplete(Date_t::max());
}
invariant(LOCK_OK == result);
// Global storage engine may not be started in all cases before we exit
if (serviceContext->getStorageEngine()) {
shutdownGlobalStorageEngineCleanly(serviceContext);
}
// We drop the scope cache because leak sanitizer can't see across the
// thread we use for proxying MozJS requests. Dropping the cache cleans up
// the memory and makes leak sanitizer happy.
ScriptEngine::dropScopeCache();
log(LogComponent::kControl) << "now exiting";
audit::logShutdown(client);
}
} // namespace
int mongoDbMain(int argc, char* argv[], char** envp) {
registerShutdownTask(shutdownTask);
setupSignalHandlers();
srand(static_cast<unsigned>(curTimeMicros64()));
Status status = mongo::runGlobalInitializers(argc, argv, envp);
if (!status.isOK()) {
severe(LogComponent::kControl) << "Failed global initialization: " << status;
quickExit(EXIT_FAILURE);
}
auto service = getGlobalServiceContext();
service->setServiceEntryPoint(std::make_unique<ServiceEntryPointMongod>(service));
ErrorExtraInfo::invariantHaveAllParsers();
startupConfigActions(std::vector<std::string>(argv, argv + argc));
cmdline_utils::censorArgvArray(argc, argv);
if (!initializeServerGlobalState())
quickExit(EXIT_FAILURE);
// Per SERVER-7434, startSignalProcessingThread() must run after any forks
// (initializeServerGlobalState()) and before creation of any other threads.
startSignalProcessingThread();
#if defined(_WIN32)
if (ntservice::shouldStartService()) {
ntservice::startService();
// exits directly and so never reaches here either.
}
#endif
StartupTest::runTests();
ExitCode exitCode = initAndListen(serverGlobalParams.port);
exitCleanly(exitCode);
return 0;
}
} // namespace mongo
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