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/**
* Copyright (C) 2018-present MongoDB, Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the Server Side Public License, version 1,
* as published by MongoDB, Inc.
*
* 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
* Server Side Public License for more details.
*
* You should have received a copy of the Server Side Public License
* along with this program. If not, see
* <http://www.mongodb.com/licensing/server-side-public-license>.
*
* 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 Server Side 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/db/pipeline/process_interface/common_process_interface.h"
#include "mongo/bson/mutable/document.h"
#include "mongo/db/auth/authorization_manager.h"
#include "mongo/db/auth/authorization_session.h"
#include "mongo/db/client.h"
#include "mongo/db/curop.h"
#include "mongo/db/operation_context.h"
#include "mongo/db/pipeline/expression_context.h"
#include "mongo/db/service_context.h"
#include "mongo/platform/atomic_word.h"
#include "mongo/platform/mutex.h"
#include "mongo/s/catalog_cache.h"
#include "mongo/s/grid.h"
#include "mongo/util/diagnostic_info.h"
#include "mongo/util/log.h"
#include "mongo/util/net/socket_utils.h"
namespace mongo {
std::vector<BSONObj> CommonProcessInterface::getCurrentOps(
const boost::intrusive_ptr<ExpressionContext>& expCtx,
CurrentOpConnectionsMode connMode,
CurrentOpSessionsMode sessionMode,
CurrentOpUserMode userMode,
CurrentOpTruncateMode truncateMode,
CurrentOpCursorMode cursorMode,
CurrentOpBacktraceMode backtraceMode) const {
OperationContext* opCtx = expCtx->opCtx;
AuthorizationSession* ctxAuth = AuthorizationSession::get(opCtx->getClient());
std::vector<BSONObj> ops;
auto blockedOpGuard = DiagnosticInfo::maybeMakeBlockedOpForTest(opCtx->getClient());
for (ServiceContext::LockedClientsCursor cursor(opCtx->getClient()->getServiceContext());
Client* client = cursor.next();) {
invariant(client);
stdx::lock_guard<Client> lk(*client);
// If auth is disabled, ignore the allUsers parameter.
if (ctxAuth->getAuthorizationManager().isAuthEnabled() &&
userMode == CurrentOpUserMode::kExcludeOthers &&
!ctxAuth->isCoauthorizedWithClient(client, lk)) {
continue;
}
// Ignore inactive connections unless 'idleConnections' is true.
if (connMode == CurrentOpConnectionsMode::kExcludeIdle &&
!client->hasAnyActiveCurrentOp()) {
continue;
}
// Delegate to the mongoD- or mongoS-specific implementation of _reportCurrentOpForClient.
ops.emplace_back(_reportCurrentOpForClient(opCtx, client, truncateMode, backtraceMode));
}
// If 'cursorMode' is set to include idle cursors, retrieve them and add them to ops.
if (cursorMode == CurrentOpCursorMode::kIncludeCursors) {
for (auto&& cursor : getIdleCursors(expCtx, userMode)) {
BSONObjBuilder cursorObj;
cursorObj.append("type", "idleCursor");
cursorObj.append("host", getHostNameCachedAndPort());
// First, extract fields which need to go at the top level out of the GenericCursor.
auto ns = cursor.getNs();
cursorObj.append("ns", ns->toString());
if (auto lsid = cursor.getLsid()) {
cursorObj.append("lsid", lsid->toBSON());
}
if (auto planSummaryData = cursor.getPlanSummary()) { // Not present on mongos.
cursorObj.append("planSummary", *planSummaryData);
}
// Next, append the stripped-down version of the generic cursor. This will avoid
// duplicating information reported at the top level.
cursorObj.append("cursor",
CurOp::truncateAndSerializeGenericCursor(&cursor, boost::none));
ops.emplace_back(cursorObj.obj());
}
}
// If we need to report on idle Sessions, defer to the mongoD or mongoS implementations.
if (sessionMode == CurrentOpSessionsMode::kIncludeIdle) {
_reportCurrentOpsForIdleSessions(opCtx, userMode, &ops);
}
if (!ctxAuth->getAuthorizationManager().isAuthEnabled() ||
userMode == CurrentOpUserMode::kIncludeAll) {
_reportCurrentOpsForTransactionCoordinators(
opCtx, sessionMode == MongoProcessInterface::CurrentOpSessionsMode::kIncludeIdle, &ops);
}
return ops;
}
std::vector<FieldPath> CommonProcessInterface::collectDocumentKeyFieldsActingAsRouter(
OperationContext* opCtx, const NamespaceString& nss) const {
if (auto chunkManager =
uassertStatusOK(Grid::get(opCtx)->catalogCache()->getCollectionRoutingInfo(opCtx, nss))
.cm()) {
return _shardKeyToDocumentKeyFields(
chunkManager->getShardKeyPattern().getKeyPatternFields());
}
// We have no evidence this collection is sharded, so the document key is just _id.
return {"_id"};
}
bool CommonProcessInterface::keyPatternNamesExactPaths(const BSONObj& keyPattern,
const std::set<FieldPath>& uniqueKeyPaths) {
size_t nFieldsMatched = 0;
for (auto&& elem : keyPattern) {
if (!elem.isNumber()) {
return false;
}
if (uniqueKeyPaths.find(elem.fieldNameStringData()) == uniqueKeyPaths.end()) {
return false;
}
++nFieldsMatched;
}
return nFieldsMatched == uniqueKeyPaths.size();
}
boost::optional<ChunkVersion> CommonProcessInterface::refreshAndGetCollectionVersion(
const boost::intrusive_ptr<ExpressionContext>& expCtx, const NamespaceString& nss) const {
const bool forceRefreshFromThisThread = false;
auto routingInfo = uassertStatusOK(
Grid::get(expCtx->opCtx)
->catalogCache()
->getCollectionRoutingInfoWithRefresh(expCtx->opCtx, nss, forceRefreshFromThisThread));
if (auto chunkManager = routingInfo.cm()) {
return chunkManager->getVersion();
}
return boost::none;
}
std::vector<FieldPath> CommonProcessInterface::_shardKeyToDocumentKeyFields(
const std::vector<std::unique_ptr<FieldRef>>& keyPatternFields) const {
std::vector<FieldPath> result;
bool gotId = false;
for (auto& field : keyPatternFields) {
result.emplace_back(field->dottedField());
gotId |= (result.back().fullPath() == "_id");
}
if (!gotId) { // If not part of the shard key, "_id" comes last.
result.emplace_back("_id");
}
return result;
}
std::set<FieldPath> CommonProcessInterface::_convertToFieldPaths(
const std::vector<std::string>& fields) const {
std::set<FieldPath> fieldPaths;
for (const auto& field : fields) {
const auto res = fieldPaths.insert(FieldPath(field));
uassert(ErrorCodes::BadValue,
str::stream() << "Found a duplicate field '" << field << "'",
res.second);
}
return fieldPaths;
}
std::string CommonProcessInterface::getHostAndPort(OperationContext* opCtx) const {
return getHostNameCachedAndPort();
}
void CommonProcessInterface::attachWriteConcern(BatchedCommandRequest* request,
const WriteConcernOptions& writeConcern) {
if (!writeConcern.usedDefault) {
request->setWriteConcern(writeConcern.toBSON());
}
}
} // namespace mongo
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