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// server_status.cpp
/**
* Copyright (C) 2012 10gen 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::kCommand
#include "mongo/platform/basic.h"
#include "mongo/config.h"
#include "mongo/db/auth/action_set.h"
#include "mongo/db/auth/action_type.h"
#include "mongo/db/auth/authorization_manager.h"
#include "mongo/db/auth/authorization_session.h"
#include "mongo/db/auth/privilege.h"
#include "mongo/db/client.h"
#include "mongo/db/commands.h"
#include "mongo/db/commands/server_status.h"
#include "mongo/db/commands/server_status_internal.h"
#include "mongo/db/commands/server_status_metric.h"
#include "mongo/db/operation_context.h"
#include "mongo/db/service_context.h"
#include "mongo/db/stats/counters.h"
#include "mongo/platform/process_id.h"
#include "mongo/transport/message_compressor_registry.h"
#include "mongo/transport/transport_layer.h"
#include "mongo/util/log.h"
#include "mongo/util/net/hostname_canonicalization.h"
#include "mongo/util/net/ssl_manager.h"
#include "mongo/util/processinfo.h"
#include "mongo/util/ramlog.h"
#include "mongo/util/time_support.h"
#include "mongo/util/version.h"
namespace mongo {
using std::endl;
using std::map;
using std::string;
using std::stringstream;
class CmdServerStatus : public BasicCommand {
public:
CmdServerStatus() : BasicCommand("serverStatus"), _started(Date_t::now()), _runCalled(false) {}
virtual bool supportsWriteConcern(const BSONObj& cmd) const override {
return false;
}
virtual bool slaveOk() const {
return true;
}
virtual void help(stringstream& help) const {
help << "returns lots of administrative server statistics";
}
virtual void addRequiredPrivileges(const std::string& dbname,
const BSONObj& cmdObj,
std::vector<Privilege>* out) {
ActionSet actions;
actions.addAction(ActionType::serverStatus);
out->push_back(Privilege(ResourcePattern::forClusterResource(), actions));
}
bool run(OperationContext* opCtx,
const string& dbname,
const BSONObj& cmdObj,
BSONObjBuilder& result) {
_runCalled = true;
const auto service = opCtx->getServiceContext();
const auto clock = service->getFastClockSource();
const auto runStart = clock->now();
BSONObjBuilder timeBuilder(256);
const auto authSession = AuthorizationSession::get(Client::getCurrent());
// --- basic fields that are global
result.append("host", prettyHostName());
result.append("version", VersionInfoInterface::instance().version());
result.append("process", serverGlobalParams.binaryName);
result.append("pid", ProcessId::getCurrent().asLongLong());
result.append("uptime", (double)(time(0) - serverGlobalParams.started));
auto uptime = clock->now() - _started;
result.append("uptimeMillis", durationCount<Milliseconds>(uptime));
result.append("uptimeEstimate", durationCount<Seconds>(uptime));
result.appendDate("localTime", jsTime());
timeBuilder.appendNumber("after basic",
durationCount<Milliseconds>(clock->now() - runStart));
// --- all sections
for (SectionMap::const_iterator i = _sections.begin(); i != _sections.end(); ++i) {
ServerStatusSection* section = i->second;
std::vector<Privilege> requiredPrivileges;
section->addRequiredPrivileges(&requiredPrivileges);
if (!authSession->isAuthorizedForPrivileges(requiredPrivileges))
continue;
bool include = section->includeByDefault();
const auto& elem = cmdObj[section->getSectionName()];
if (elem.type()) {
include = elem.trueValue();
}
if (!include) {
continue;
}
section->appendSection(opCtx, elem, &result);
timeBuilder.appendNumber(
static_cast<string>(str::stream() << "after " << section->getSectionName()),
durationCount<Milliseconds>(clock->now() - runStart));
}
// --- counters
bool includeMetricTree = MetricTree::theMetricTree != NULL;
if (cmdObj["metrics"].type() && !cmdObj["metrics"].trueValue())
includeMetricTree = false;
if (includeMetricTree) {
MetricTree::theMetricTree->appendTo(result);
}
// --- some hard coded global things hard to pull out
{
RamLog::LineIterator rl(RamLog::get("warnings"));
if (rl.lastWrite() >= time(0) - (10 * 60)) { // only show warnings from last 10 minutes
BSONArrayBuilder arr(result.subarrayStart("warnings"));
while (rl.more()) {
arr.append(rl.next());
}
arr.done();
}
}
auto runElapsed = clock->now() - runStart;
timeBuilder.appendNumber("at end", durationCount<Milliseconds>(runElapsed));
if (runElapsed > Milliseconds(1000)) {
BSONObj t = timeBuilder.obj();
log() << "serverStatus was very slow: " << t;
result.append("timing", t);
}
return true;
}
void addSection(ServerStatusSection* section) {
verify(!_runCalled);
_sections[section->getSectionName()] = section;
}
private:
const Date_t _started;
bool _runCalled;
typedef map<string, ServerStatusSection*> SectionMap;
SectionMap _sections;
};
namespace {
// This widget ensures that the serverStatus command is registered even if no
// server status sections are registered.
const struct CmdServerStatusInstantiator {
explicit CmdServerStatusInstantiator() {
getInstance();
}
static CmdServerStatus& getInstance() {
static CmdServerStatus instance;
return instance;
}
} kDoNotMentionThisVariable;
} // namespace
ServerStatusSection::ServerStatusSection(const string& sectionName) : _sectionName(sectionName) {
CmdServerStatusInstantiator::getInstance().addSection(this);
}
OpCounterServerStatusSection::OpCounterServerStatusSection(const string& sectionName,
OpCounters* counters)
: ServerStatusSection(sectionName), _counters(counters) {}
BSONObj OpCounterServerStatusSection::generateSection(OperationContext* opCtx,
const BSONElement& configElement) const {
return _counters->getObj();
}
OpCounterServerStatusSection globalOpCounterServerStatusSection("opcounters", &globalOpCounters);
namespace {
// some universal sections
class Connections : public ServerStatusSection {
public:
Connections() : ServerStatusSection("connections") {}
virtual bool includeByDefault() const {
return true;
}
BSONObj generateSection(OperationContext* opCtx, const BSONElement& configElement) const {
BSONObjBuilder bb;
if (!opCtx->getServiceContext()->getTransportLayer()) {
return bb.obj();
}
auto stats = opCtx->getServiceContext()->getTransportLayer()->sessionStats();
bb.append("current", static_cast<int>(stats.numOpenSessions));
bb.append("available", static_cast<int>(stats.numAvailableSessions));
bb.append("totalCreated", static_cast<int>(stats.numCreatedSessions));
return bb.obj();
}
} connections;
class ExtraInfo : public ServerStatusSection {
public:
ExtraInfo() : ServerStatusSection("extra_info") {}
virtual bool includeByDefault() const {
return true;
}
BSONObj generateSection(OperationContext* opCtx, const BSONElement& configElement) const {
BSONObjBuilder bb;
bb.append("note", "fields vary by platform");
ProcessInfo p;
p.getExtraInfo(bb);
return bb.obj();
}
} extraInfo;
class Asserts : public ServerStatusSection {
public:
Asserts() : ServerStatusSection("asserts") {}
virtual bool includeByDefault() const {
return true;
}
BSONObj generateSection(OperationContext* opCtx, const BSONElement& configElement) const {
BSONObjBuilder asserts;
asserts.append("regular", assertionCount.regular);
asserts.append("warning", assertionCount.warning);
asserts.append("msg", assertionCount.msg);
asserts.append("user", assertionCount.user);
asserts.append("rollovers", assertionCount.rollovers);
return asserts.obj();
}
} asserts;
class Network : public ServerStatusSection {
public:
Network() : ServerStatusSection("network") {}
virtual bool includeByDefault() const {
return true;
}
BSONObj generateSection(OperationContext* opCtx, const BSONElement& configElement) const {
BSONObjBuilder b;
networkCounter.append(b);
appendMessageCompressionStats(&b);
return b.obj();
}
} network;
#ifdef MONGO_CONFIG_SSL
class Security : public ServerStatusSection {
public:
Security() : ServerStatusSection("security") {}
virtual bool includeByDefault() const {
return true;
}
BSONObj generateSection(OperationContext* opCtx, const BSONElement& configElement) const {
BSONObj result;
if (getSSLManager()) {
result = getSSLManager()->getSSLConfiguration().getServerStatusBSON();
}
return result;
}
} security;
#endif
class MemBase : public ServerStatusMetric {
public:
MemBase() : ServerStatusMetric(".mem.bits") {}
virtual void appendAtLeaf(BSONObjBuilder& b) const {
b.append("bits", sizeof(int*) == 4 ? 32 : 64);
ProcessInfo p;
int v = 0;
if (p.supported()) {
b.appendNumber("resident", p.getResidentSize());
v = p.getVirtualMemorySize();
b.appendNumber("virtual", v);
b.appendBool("supported", true);
} else {
b.append("note", "not all mem info support on this platform");
b.appendBool("supported", false);
}
}
} memBase;
class AdvisoryHostFQDNs final : public ServerStatusSection {
public:
AdvisoryHostFQDNs() : ServerStatusSection("advisoryHostFQDNs") {}
bool includeByDefault() const override {
return false;
}
void appendSection(OperationContext* opCtx,
const BSONElement& configElement,
BSONObjBuilder* out) const override {
out->append(
"advisoryHostFQDNs",
getHostFQDNs(getHostNameCached(), HostnameCanonicalizationMode::kForwardAndReverse));
}
} advisoryHostFQDNs;
} // namespace
} // namespace mongo
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