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/**
* Copyright (C) 2017 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.
*/
#include "mongo/platform/basic.h"
#include "mongo/client/dbclientinterface.h"
#include "mongo/rpc/get_status_from_command_result.h"
#include "mongo/rpc/op_msg.h"
#include "mongo/unittest/integration_test.h"
#include "mongo/unittest/unittest.h"
#include "mongo/util/scopeguard.h"
namespace mongo {
TEST(OpMsg, UnknownRequiredFlagClosesConnection) {
std::string errMsg;
auto conn = std::unique_ptr<DBClientBase>(
unittest::getFixtureConnectionString().connect("integration_test", errMsg));
uassert(ErrorCodes::SocketException, errMsg, conn);
auto request = OpMsgRequest::fromDBAndBody("admin", BSON("ping" << 1)).serialize();
OpMsg::setFlag(&request, 1u << 15); // This should be the last required flag to be assigned.
Message reply;
ASSERT(!conn->call(request, reply, /*assertOK*/ false));
}
TEST(OpMsg, UnknownOptionalFlagIsIgnored) {
std::string errMsg;
auto conn = std::unique_ptr<DBClientBase>(
unittest::getFixtureConnectionString().connect("integration_test", errMsg));
uassert(ErrorCodes::SocketException, errMsg, conn);
auto request = OpMsgRequest::fromDBAndBody("admin", BSON("ping" << 1)).serialize();
OpMsg::setFlag(&request, 1u << 31); // This should be the last optional flag to be assigned.
Message reply;
ASSERT(conn->call(request, reply));
uassertStatusOK(getStatusFromCommandResult(
conn->parseCommandReplyMessage(conn->getServerAddress(), reply)->getCommandReply()));
}
TEST(OpMsg, FireAndForgetInsertWorks) {
std::string errMsg;
auto conn = std::unique_ptr<DBClientBase>(
unittest::getFixtureConnectionString().connect("integration_test", errMsg));
uassert(ErrorCodes::SocketException, errMsg, conn);
conn->dropCollection("test.collection");
conn->runFireAndForgetCommand(OpMsgRequest::fromDBAndBody("test", fromjson(R"({
insert: "collection",
writeConcern: {w: 0},
documents: [
{a: 1}
]
})")));
ASSERT_EQ(conn->count("test.collection"), 1u);
}
TEST(OpMsg, CloseConnectionOnFireAndForgetNotMasterError) {
const auto connStr = unittest::getFixtureConnectionString();
// This test only works against a replica set.
if (connStr.type() != ConnectionString::SET) {
return;
}
bool foundSecondary = false;
for (auto host : connStr.getServers()) {
DBClientConnection conn;
uassertStatusOK(conn.connect(host, "integration_test"));
bool isMaster;
ASSERT(conn.isMaster(isMaster));
if (isMaster)
continue;
foundSecondary = true;
auto request = OpMsgRequest::fromDBAndBody("test", fromjson(R"({
insert: "collection",
writeConcern: {w: 0},
documents: [
{a: 1}
]
})")).serialize();
// Round-trip command fails with NotMaster error. Note that this failure is in command
// dispatch which ignores w:0.
Message reply;
ASSERT(conn.call(request, reply, /*assertOK*/ true, nullptr));
ASSERT_EQ(
getStatusFromCommandResult(
conn.parseCommandReplyMessage(conn.getServerAddress(), reply)->getCommandReply()),
ErrorCodes::NotMaster);
// Fire-and-forget closes connection when it sees that error. Note that this is using call()
// rather than say() so that we get an error back when the connection is closed. Normally
// using call() if kMoreToCome set results in blocking forever.
OpMsg::setFlag(&request, OpMsg::kMoreToCome);
ASSERT(!conn.call(request, reply, /*assertOK*/ false, nullptr));
uassertStatusOK(conn.connect(host, "integration_test")); // Reconnect.
// Disable eager checking of master to simulate a stepdown occurring after the check. This
// should respect w:0.
BSONObj output;
ASSERT(conn.runCommand("admin",
fromjson(R"({
configureFailPoint: 'skipCheckingForNotMasterInCommandDispatch',
mode: 'alwaysOn'
})"),
output))
<< output;
ON_BLOCK_EXIT([&] {
uassertStatusOK(conn.connect(host, "integration_test-cleanup"));
ASSERT(conn.runCommand("admin",
fromjson(R"({
configureFailPoint:
'skipCheckingForNotMasterInCommandDispatch',
mode: 'off'
})"),
output))
<< output;
});
// Round-trip command claims to succeed due to w:0.
OpMsg::replaceFlags(&request, 0);
ASSERT(conn.call(request, reply, /*assertOK*/ true, nullptr));
ASSERT_OK(getStatusFromCommandResult(
conn.parseCommandReplyMessage(conn.getServerAddress(), reply)->getCommandReply()));
// Fire-and-forget should still close connection.
OpMsg::setFlag(&request, OpMsg::kMoreToCome);
ASSERT(!conn.call(request, reply, /*assertOK*/ false, nullptr));
break;
}
ASSERT(foundSecondary);
}
} // namespace mongo
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