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// mongo/shell/shell_utils.cpp
/*
* Copyright 2010 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::kDefault
#include "mongo/platform/basic.h"
#include "mongo/shell/shell_utils.h"
#include "mongo/client/dbclientinterface.h"
#include "mongo/client/replica_set_monitor.h"
#include "mongo/db/catalog/index_key_validate.h"
#include "mongo/db/index/external_key_generator.h"
#include "mongo/platform/random.h"
#include "mongo/scripting/engine.h"
#include "mongo/shell/bench.h"
#include "mongo/shell/shell_options.h"
#include "mongo/shell/shell_utils_extended.h"
#include "mongo/shell/shell_utils_launcher.h"
#include "mongo/util/concurrency/threadlocal.h"
#include "mongo/util/log.h"
#include "mongo/util/processinfo.h"
#include "mongo/util/quick_exit.h"
#include "mongo/util/text.h"
#include "mongo/util/version.h"
namespace mongo {
using std::set;
using std::map;
using std::string;
namespace JSFiles {
extern const JSFile servers;
extern const JSFile shardingtest;
extern const JSFile servers_misc;
extern const JSFile replsettest;
extern const JSFile bridge;
}
namespace shell_utils {
std::string _dbConnect;
std::string _dbAuth;
const char* argv0 = 0;
void RecordMyLocation(const char* _argv0) {
argv0 = _argv0;
}
// helpers
BSONObj makeUndefined() {
BSONObjBuilder b;
b.appendUndefined("");
return b.obj();
}
const BSONObj undefinedReturn = makeUndefined();
BSONElement singleArg(const BSONObj& args) {
uassert(12597, "need to specify 1 argument", args.nFields() == 1);
return args.firstElement();
}
const char* getUserDir() {
#ifdef _WIN32
return getenv("USERPROFILE");
#else
return getenv("HOME");
#endif
}
// real methods
BSONObj JSGetMemInfo(const BSONObj& args, void* data) {
ProcessInfo pi;
uassert(10258, "processinfo not supported", pi.supported());
BSONObjBuilder e;
e.append("virtual", pi.getVirtualMemorySize());
e.append("resident", pi.getResidentSize());
BSONObjBuilder b;
b.append("ret", e.obj());
return b.obj();
}
#if !defined(_WIN32)
ThreadLocalValue<unsigned int> _randomSeed;
#endif
BSONObj JSSrand(const BSONObj& a, void* data) {
unsigned int seed;
// grab the least significant bits of either the supplied argument or
// a random number from SecureRandom.
if (a.nFields() == 1 && a.firstElement().isNumber())
seed = static_cast<unsigned int>(a.firstElement().numberLong());
else {
std::unique_ptr<SecureRandom> rand(SecureRandom::create());
seed = static_cast<unsigned int>(rand->nextInt64());
}
#if !defined(_WIN32)
_randomSeed.set(seed);
#else
srand(seed);
#endif
return BSON("" << static_cast<double>(seed));
}
BSONObj JSRand(const BSONObj& a, void* data) {
uassert(12519, "rand accepts no arguments", a.nFields() == 0);
unsigned r;
#if !defined(_WIN32)
r = rand_r(&_randomSeed.getRef());
#else
r = rand();
#endif
return BSON("" << double(r) / (double(RAND_MAX) + 1));
}
BSONObj isWindows(const BSONObj& a, void* data) {
uassert(13006, "isWindows accepts no arguments", a.nFields() == 0);
#ifdef _WIN32
return BSON("" << true);
#else
return BSON("" << false);
#endif
}
BSONObj getBuildInfo(const BSONObj& a, void* data) {
uassert(16822, "getBuildInfo accepts no arguments", a.nFields() == 0);
BSONObjBuilder b;
VersionInfoInterface::instance().appendBuildInfo(&b);
return BSON("" << b.done());
}
BSONObj isKeyTooLarge(const BSONObj& a, void* data) {
uassert(17428, "keyTooLarge takes exactly 2 arguments", a.nFields() == 2);
BSONObjIterator i(a);
BSONObj index = i.next().Obj();
BSONObj doc = i.next().Obj();
return BSON("" << isAnyIndexKeyTooLarge(index, doc));
}
BSONObj validateIndexKey(const BSONObj& a, void* data) {
BSONObj key = a[0].Obj();
Status indexValid = validateKeyPattern(key);
if (!indexValid.isOK()) {
return BSON("" << BSON("ok" << false << "type" << indexValid.codeString() << "errmsg"
<< indexValid.reason()));
}
return BSON("" << BSON("ok" << true));
}
BSONObj replMonitorStats(const BSONObj& a, void* data) {
uassert(17134,
"replMonitorStats requires a single string argument (the ReplSet name)",
a.nFields() == 1 && a.firstElement().type() == String);
ReplicaSetMonitorPtr rsm = ReplicaSetMonitor::get(a.firstElement().valuestrsafe());
if (!rsm) {
return BSON(""
<< "no ReplSetMonitor exists by that name");
}
BSONObjBuilder result;
rsm->appendInfo(result);
return result.obj();
}
BSONObj useWriteCommandsDefault(const BSONObj& a, void* data) {
return BSON("" << shellGlobalParams.useWriteCommandsDefault);
}
BSONObj writeMode(const BSONObj&, void*) {
return BSON("" << shellGlobalParams.writeMode);
}
BSONObj readMode(const BSONObj&, void*) {
return BSON("" << shellGlobalParams.readMode);
}
BSONObj interpreterVersion(const BSONObj& a, void* data) {
uassert(16453, "interpreterVersion accepts no arguments", a.nFields() == 0);
return BSON("" << globalScriptEngine->getInterpreterVersionString());
}
void installShellUtils(Scope& scope) {
scope.injectNative("getMemInfo", JSGetMemInfo);
scope.injectNative("_replMonitorStats", replMonitorStats);
scope.injectNative("_srand", JSSrand);
scope.injectNative("_rand", JSRand);
scope.injectNative("_isWindows", isWindows);
scope.injectNative("interpreterVersion", interpreterVersion);
scope.injectNative("getBuildInfo", getBuildInfo);
scope.injectNative("isKeyTooLarge", isKeyTooLarge);
scope.injectNative("validateIndexKey", validateIndexKey);
#ifndef MONGO_SAFE_SHELL
// can't launch programs
installShellUtilsLauncher(scope);
installShellUtilsExtended(scope);
#endif
}
void initScope(Scope& scope) {
// Need to define this method before JSFiles::utils is executed.
scope.injectNative("_useWriteCommandsDefault", useWriteCommandsDefault);
scope.injectNative("_writeMode", writeMode);
scope.injectNative("_readMode", readMode);
scope.externalSetup();
mongo::shell_utils::installShellUtils(scope);
scope.execSetup(JSFiles::servers);
scope.execSetup(JSFiles::shardingtest);
scope.execSetup(JSFiles::servers_misc);
scope.execSetup(JSFiles::replsettest);
scope.execSetup(JSFiles::bridge);
scope.injectNative("benchRun", BenchRunner::benchRunSync);
scope.injectNative("benchRunSync", BenchRunner::benchRunSync);
scope.injectNative("benchStart", BenchRunner::benchStart);
scope.injectNative("benchFinish", BenchRunner::benchFinish);
if (!_dbConnect.empty()) {
uassert(12513, "connect failed", scope.exec(_dbConnect, "(connect)", false, true, false));
}
if (!_dbAuth.empty()) {
uassert(12514, "login failed", scope.exec(_dbAuth, "(auth)", true, true, false));
}
}
Prompter::Prompter(const string& prompt) : _prompt(prompt), _confirmed() {}
bool Prompter::confirm() {
if (_confirmed) {
return true;
}
// The printf and scanf functions provide thread safe i/o.
printf("\n%s (y/n): ", _prompt.c_str());
char yn = '\0';
int nScanMatches = scanf("%c", &yn);
bool matchedY = (nScanMatches == 1 && (yn == 'y' || yn == 'Y'));
return _confirmed = matchedY;
}
ConnectionRegistry::ConnectionRegistry() = default;
void ConnectionRegistry::registerConnection(DBClientWithCommands& client) {
BSONObj info;
if (client.runCommand("admin", BSON("whatsmyuri" << 1), info)) {
string connstr = dynamic_cast<DBClientBase&>(client).getServerAddress();
stdx::lock_guard<stdx::mutex> lk(_mutex);
_connectionUris[connstr].insert(info["you"].str());
}
}
void ConnectionRegistry::killOperationsOnAllConnections(bool withPrompt) const {
Prompter prompter("do you want to kill the current op(s) on the server?");
stdx::lock_guard<stdx::mutex> lk(_mutex);
for (map<string, set<string>>::const_iterator i = _connectionUris.begin();
i != _connectionUris.end();
++i) {
auto status = ConnectionString::parse(i->first);
if (!status.isOK()) {
continue;
}
const ConnectionString cs(status.getValue());
string errmsg;
std::unique_ptr<DBClientWithCommands> conn(cs.connect("MongoDB Shell", errmsg));
if (!conn) {
continue;
}
const set<string>& uris = i->second;
BSONObj currentOpRes;
conn->runPseudoCommand("admin", "currentOp", "$cmd.sys.inprog", {}, currentOpRes);
if (!currentOpRes["inprog"].isABSONObj()) {
// We don't have permissions (or the call didn't succeed) - go to the next connection.
continue;
}
auto inprog = currentOpRes["inprog"].embeddedObject();
for (const auto op : inprog) {
// For sharded clusters, `client_s` is used instead and `client` is not present.
string client;
if (auto elem = op["client"]) {
// mongod currentOp client
if (elem.type() != String) {
warning() << "Ignoring operation " << op["opid"].toString(false)
<< "; expected 'client' field in currentOp response to have type "
"string, but found "
<< typeName(elem.type());
continue;
}
client = elem.str();
} else if (auto elem = op["client_s"]) {
// mongos currentOp client
if (elem.type() != String) {
warning() << "Ignoring operation " << op["opid"].toString(false)
<< "; expected 'client_s' field in currentOp response to have type "
"string, but found "
<< typeName(elem.type());
continue;
}
client = elem.str();
} else {
// Internal operation, like TTL index.
continue;
}
if (uris.count(client)) {
if (!withPrompt || prompter.confirm()) {
BSONObjBuilder cmdBob;
BSONObj info;
cmdBob.appendAs(op["opid"], "op");
auto cmdArgs = cmdBob.done();
conn->runPseudoCommand("admin", "killOp", "$cmd.sys.killop", cmdArgs, info);
} else {
return;
}
}
}
}
}
ConnectionRegistry connectionRegistry;
bool _nokillop = false;
void onConnect(DBClientWithCommands& c) {
if (_nokillop) {
return;
}
// Only override the default rpcProtocols if they were set on the command line.
if (shellGlobalParams.rpcProtocols) {
c.setClientRPCProtocols(*shellGlobalParams.rpcProtocols);
}
connectionRegistry.registerConnection(c);
}
bool fileExists(const std::string& file) {
try {
#ifdef _WIN32
boost::filesystem::path p(toWideString(file.c_str()));
#else
boost::filesystem::path p(file);
#endif
return boost::filesystem::exists(p);
} catch (...) {
return false;
}
}
stdx::mutex& mongoProgramOutputMutex(*(new stdx::mutex()));
}
}