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/**
* Copyright (C) 2022-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.
*/
#include "mongo/util/namespace_string_util.h"
#include "mongo/db/multitenancy_gen.h"
#include "mongo/db/namespace_string.h"
#include "mongo/db/server_feature_flags_gen.h"
#include "mongo/util/str.h"
#include <ostream>
namespace mongo {
std::string NamespaceStringUtil::serialize(const NamespaceString& ns,
const SerializationContext& context,
const SerializationOptions& options) {
if (!gMultitenancySupport)
return options.serializeIdentifier(ns.toString());
// TODO SERVER-74284: uncomment to redirect command-sepcific serialization requests
// if (context.getSource() == SerializationContext::Source::Command &&
// context.getCallerType() == SerializationContext::CallerType::Reply)
// return serializeForCommands(ns, context);
// if we're not serializing a Command Reply, use the default serializing rules
return options.serializeIdentifier(serializeForStorage(ns, context));
}
std::string NamespaceStringUtil::serializeForCatalog(const NamespaceString& ns) {
return ns.toStringWithTenantId();
}
std::string NamespaceStringUtil::serializeForStorage(const NamespaceString& ns,
const SerializationContext& context) {
if (gFeatureFlagRequireTenantID.isEnabled(serverGlobalParams.featureCompatibility)) {
return ns.toString();
}
return ns.toStringWithTenantId();
}
std::string NamespaceStringUtil::serializeForCommands(const NamespaceString& ns,
const SerializationContext& context) {
// tenantId came from either a $tenant field or security token
if (context.receivedNonPrefixedTenantId()) {
switch (context.getPrefix()) {
case SerializationContext::Prefix::ExcludePrefix:
// fallthrough
case SerializationContext::Prefix::Default:
return ns.toString();
case SerializationContext::Prefix::IncludePrefix:
return ns.toStringWithTenantId();
default:
MONGO_UNREACHABLE;
}
}
switch (context.getPrefix()) {
case SerializationContext::Prefix::ExcludePrefix:
return ns.toString();
case SerializationContext::Prefix::Default:
// fallthrough
case SerializationContext::Prefix::IncludePrefix:
return ns.toStringWithTenantId();
default:
MONGO_UNREACHABLE;
}
}
NamespaceString NamespaceStringUtil::deserialize(boost::optional<TenantId> tenantId,
StringData ns,
const SerializationContext& context) {
if (ns.empty()) {
return NamespaceString();
}
if (!gMultitenancySupport) {
massert(6972102,
str::stream() << "TenantId must not be set, but it is: " << tenantId->toString(),
tenantId == boost::none);
return NamespaceString(boost::none, ns);
}
// TODO SERVER-74284: uncomment to redirect command-sepcific deserialization requests
// if (context.getSource() == SerializationContext::Source::Command &&
// context.getCallerType() == SerializationContext::CallerType::Request)
// return deserializeForCommands(std::move(tenantId), ns, context);
// if we're not deserializing a Command Request, use the default deserializing rules
return deserializeForStorage(std::move(tenantId), ns, context);
}
NamespaceString NamespaceStringUtil::deserializeForStorage(boost::optional<TenantId> tenantId,
StringData ns,
const SerializationContext& context) {
if (gFeatureFlagRequireTenantID.isEnabled(serverGlobalParams.featureCompatibility)) {
StringData dbName = ns.substr(0, ns.find('.'));
if (!(dbName == DatabaseName::kAdmin.db()) && !(dbName == DatabaseName::kLocal.db()) &&
!(dbName == DatabaseName::kConfig.db())) {
massert(6972100,
str::stream() << "TenantId must be set on nss " << ns,
tenantId != boost::none);
}
return NamespaceString(std::move(tenantId), ns);
}
auto nss = NamespaceString::parseFromStringExpectTenantIdInMultitenancyMode(ns);
// TenantId could be prefixed, or passed in separately (or both) and namespace is always
// constructed with the tenantId separately.
if (tenantId != boost::none) {
if (!nss.tenantId()) {
return NamespaceString(std::move(tenantId), ns);
}
massert(6972101,
str::stream() << "TenantId must match the db prefix tenantId: "
<< tenantId->toString() << " prefix " << nss.tenantId()->toString(),
tenantId == nss.tenantId());
}
return nss;
}
NamespaceString NamespaceStringUtil::deserializeForCommands(boost::optional<TenantId> tenantId,
StringData ns,
const SerializationContext& context) {
// we only get here if we are processing a Command Request. We disregard the feature flag in
// this case, essentially letting the request dictate the state of the feature.
if (tenantId != boost::none) {
switch (context.getPrefix()) {
case SerializationContext::Prefix::ExcludePrefix:
// fallthrough
case SerializationContext::Prefix::Default:
return NamespaceString(std::move(tenantId), ns);
case SerializationContext::Prefix::IncludePrefix: {
auto nss = NamespaceString::parseFromStringExpectTenantIdInMultitenancyMode(ns);
massert(8423385,
str::stream() << "TenantId from $tenant or security token present as '"
<< tenantId->toString()
<< "' with expectPrefix field set but without a prefix set",
nss.tenantId());
massert(
8423381,
str::stream()
<< "TenantId from $tenant or security token must match prefixed tenantId: "
<< tenantId->toString() << " prefix " << nss.tenantId()->toString(),
tenantId.value() == nss.tenantId());
return nss;
}
default:
MONGO_UNREACHABLE;
}
}
auto nss = NamespaceString::parseFromStringExpectTenantIdInMultitenancyMode(ns);
if ((nss.dbName() != DatabaseName::kAdmin) && (nss.dbName() != DatabaseName::kLocal) &&
(nss.dbName() != DatabaseName::kConfig)) {
massert(8423387,
str::stream() << "TenantId must be set on nss " << ns,
nss.tenantId() != boost::none);
}
return nss;
}
NamespaceString NamespaceStringUtil::parseNamespaceFromRequest(
const boost::optional<TenantId>& tenantId, StringData ns) {
return deserialize(tenantId, ns);
}
NamespaceString NamespaceStringUtil::parseNamespaceFromRequest(
const boost::optional<TenantId>& tenantId, StringData db, StringData coll) {
if (coll.empty())
return deserialize(tenantId, db);
uassert(ErrorCodes::InvalidNamespace,
"Collection names cannot start with '.': " + coll,
coll[0] != '.');
return deserialize(tenantId, str::stream() << db << "." << coll);
}
NamespaceString NamespaceStringUtil::parseNamespaceFromRequest(const DatabaseName& dbName,
StringData coll) {
if (coll.empty()) {
return NamespaceString(dbName);
}
uassert(ErrorCodes::InvalidNamespace,
"Collection names cannot start with '.': " + coll,
coll[0] != '.');
return deserialize(dbName.tenantId(), str::stream() << dbName.db() << "." << coll);
}
NamespaceString NamespaceStringUtil::parseNamespaceFromDoc(
const boost::optional<TenantId>& tenantId, StringData ns) {
return deserialize(tenantId, ns);
}
NamespaceString NamespaceStringUtil::parseNamespaceFromDoc(
const boost::optional<TenantId>& tenantId, StringData db, StringData coll) {
if (coll.empty())
return deserialize(tenantId, db);
uassert(ErrorCodes::InvalidNamespace,
"Collection names cannot start with '.': " + coll,
coll[0] != '.');
return deserialize(tenantId, str::stream() << db << "." << coll);
}
NamespaceString NamespaceStringUtil::parseNamespaceFromDoc(const DatabaseName& dbName,
StringData coll) {
if (coll.empty())
return NamespaceString(dbName);
uassert(ErrorCodes::InvalidNamespace,
"Collection names cannot start with '.': " + coll,
coll[0] != '.');
return deserialize(dbName.tenantId(), str::stream() << dbName.db() << "." << coll);
}
NamespaceString NamespaceStringUtil::parseNamespaceFromResponse(const DatabaseName& dbName,
StringData coll) {
return parseNamespaceFromDoc(dbName, coll);
}
} // namespace mongo
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