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DiskSelector.cpp
File metadata and controls
261 lines (213 loc) · 8.77 KB
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#include <Disks/DiskObjectStorage/DiskObjectStorage.h>
#include <Disks/DiskObjectStorage/MetadataStorages/Cache/MetadataStorageFromCacheObjectStorage.h>
#include <Disks/DiskLocal.h>
#include <Disks/DiskSelector.h>
#include <IO/WriteHelpers.h>
#include <Common/escapeForFileName.h>
#include <Common/quoteString.h>
#include <Common/logger_useful.h>
#include <Interpreters/Context.h>
namespace DB
{
namespace ErrorCodes
{
extern const int EXCESSIVE_ELEMENT_IN_CONFIG;
extern const int UNKNOWN_DISK;
extern const int LOGICAL_ERROR;
extern const int BAD_ARGUMENTS;
}
namespace
{
MetadataStoragePtr unwrapEncryptedAndCacheLayers(DiskPtr disk)
{
if (disk->getDataSourceDescription().is_encrypted)
return unwrapEncryptedAndCacheLayers(disk->getDelegateDiskIfExists());
DiskObjectStoragePtr object_storage_disk = std::dynamic_pointer_cast<DiskObjectStorage>(disk);
MetadataStoragePtr metadata_storage = object_storage_disk->getMetadataStorage();
while (auto * cache_metadata = dynamic_cast<MetadataStorageFromCacheObjectStorage *>(metadata_storage.get()))
metadata_storage = cache_metadata->getUnderlying();
chassert(metadata_storage);
return metadata_storage;
}
}
void DiskSelector::assertInitialized() const
{
if (!is_initialized)
throw Exception(ErrorCodes::LOGICAL_ERROR, "DiskSelector not initialized");
}
void DiskSelector::recordDisk(const std::string & disk_name, DiskPtr disk)
{
if (disk->isPlain() && !disk->isReadOnly() && !disk->isWriteOnce())
{
for (const auto & [saved_disk_name, saved_disk] : disks)
{
if (!saved_disk->isPlain() || saved_disk->isReadOnly() || saved_disk->isWriteOnce())
continue;
/// Same endpoint
if (disk->getObjectStorage()->getDescription() != saved_disk->getObjectStorage()->getDescription())
continue;
/// Same bucket
if (disk->getObjectStorage()->getObjectsNamespace() != saved_disk->getObjectStorage()->getObjectsNamespace())
continue;
LOG_TEST(getLogger("recordDisk"), "Validating plain disk: {}-{}-{}-{}-{} vs {}-{}-{}-{}-{}",
disk_name, disk->isReadOnly(), disk->isWriteOnce(), disk->getObjectStorage()->getDescription(), disk->getObjectStorage()->getObjectsNamespace(),
saved_disk_name, saved_disk->isReadOnly(), saved_disk->isWriteOnce(), saved_disk->getObjectStorage()->getDescription(), saved_disk->getObjectStorage()->getObjectsNamespace());
/// Nested common keys
const auto new_prefix = disk->getObjectStorage()->getCommonKeyPrefix();
const auto saved_prefix = saved_disk->getObjectStorage()->getCommonKeyPrefix();
if (new_prefix.starts_with(saved_prefix) || saved_prefix.starts_with(new_prefix))
{
const auto unwrapped_metadata_storage_saved = unwrapEncryptedAndCacheLayers(saved_disk);
const auto unwrapped_metadata_storage_new = unwrapEncryptedAndCacheLayers(disk);
if (unwrapped_metadata_storage_saved.get() != unwrapped_metadata_storage_new.get())
throw Exception(ErrorCodes::BAD_ARGUMENTS,
"It is not possible to register multiple plain-rewritable disks with the same object storage prefix. Disks '{}' and '{}'",
disk_name, saved_disk_name);
}
}
}
const auto [_, inserted] = disks.emplace(disk_name, std::move(disk));
if (!inserted)
throw Exception(ErrorCodes::LOGICAL_ERROR, "Disk with name `{}` is already in disks map", disk_name);
}
void DiskSelector::initialize(
const Poco::Util::AbstractConfiguration & config, const String & config_prefix, ContextPtr context, DiskValidator disk_validator)
try
{
auto component_guard = Coordination::setCurrentComponent("DiskSelector::initialize");
Poco::Util::AbstractConfiguration::Keys keys;
config.keys(config_prefix, keys);
auto & factory = DiskFactory::instance();
bool has_default_disk = false;
bool has_local_disk = false;
for (const auto & disk_name : keys)
{
if (!std::all_of(disk_name.begin(), disk_name.end(), isWordCharASCII))
throw Exception(ErrorCodes::EXCESSIVE_ELEMENT_IN_CONFIG, "Disk name can contain only alphanumeric and '_' ({})", disk_name);
if (disk_name == DEFAULT_DISK_NAME)
has_default_disk = true;
if (disk_name == LOCAL_DISK_NAME)
has_local_disk = true;
const auto disk_config_prefix = config_prefix + "." + disk_name;
if (disk_validator && !disk_validator(config, disk_config_prefix, disk_name))
continue;
auto created_disk
= factory.create(disk_name, config, disk_config_prefix, context, disks, /*attach*/ false, /*custom_disk*/ false, skip_types);
if (created_disk.get())
{
recordDisk(disk_name, std::move(created_disk));
}
}
if (!has_default_disk)
{
recordDisk(DEFAULT_DISK_NAME, std::make_shared<DiskLocal>(DEFAULT_DISK_NAME, context->getPath(), 0, context, config, config_prefix));
}
if (!has_local_disk && (context->getApplicationType() == Context::ApplicationType::DISKS))
{
throw_away_local_on_update = true;
recordDisk(LOCAL_DISK_NAME, std::make_shared<DiskLocal>(LOCAL_DISK_NAME, "/", 0, context, config, config_prefix));
}
is_initialized = true;
}
catch (...)
{
for (const auto & [name, disk] : disks)
disk->shutdown();
throw;
}
DiskSelectorPtr DiskSelector::updateFromConfig(
const Poco::Util::AbstractConfiguration & config, const String & config_prefix, ContextPtr context) const
{
assertInitialized();
Poco::Util::AbstractConfiguration::Keys keys;
config.keys(config_prefix, keys);
auto & factory = DiskFactory::instance();
std::shared_ptr<DiskSelector> result = std::make_shared<DiskSelector>(*this);
constexpr auto default_disk_name = "default";
constexpr auto local_disk_name = "local";
DisksMap old_disks_minus_new_disks(result->getDisksMap());
for (const auto & disk_name : keys)
{
if (!std::all_of(disk_name.begin(), disk_name.end(), isWordCharASCII))
throw Exception(ErrorCodes::EXCESSIVE_ELEMENT_IN_CONFIG, "Disk name can contain only alphanumeric and '_' ({})", disk_name);
auto disk_config_prefix = config_prefix + "." + disk_name;
if (!result->getDisksMap().contains(disk_name))
{
auto created_disk = factory.create(
disk_name, config, disk_config_prefix, context, result->getDisksMap(), /*attach*/ false, /*custom_disk*/ false, skip_types);
if (created_disk)
{
result->addToDiskMap(disk_name, created_disk);
}
}
else
{
auto disk = old_disks_minus_new_disks[disk_name];
disk->applyNewSettings(config, context, disk_config_prefix, result->getDisksMap());
old_disks_minus_new_disks.erase(disk_name);
}
}
old_disks_minus_new_disks.erase(default_disk_name);
if (throw_away_local_on_update)
{
old_disks_minus_new_disks.erase(local_disk_name);
}
if (!old_disks_minus_new_disks.empty())
{
WriteBufferFromOwnString warning;
if (old_disks_minus_new_disks.size() == 1)
writeString("Disk ", warning);
else
writeString("Disks ", warning);
int num_disks_removed_from_config = 0;
for (const auto & [name, disk] : old_disks_minus_new_disks)
{
/// Custom disks are not present in config.
if (disk->isCustomDisk())
continue;
if (num_disks_removed_from_config++ > 0)
writeString(", ", warning);
writeBackQuotedString(name, warning);
}
if (num_disks_removed_from_config > 0)
{
LOG_WARNING(
getLogger("DiskSelector"),
"{} disappeared from configuration, this change will be applied after restart of ClickHouse",
warning.str());
}
}
return result;
}
DiskPtr DiskSelector::tryGet(const String & name) const
{
assertInitialized();
auto it = disks.find(name);
if (it == disks.end())
return nullptr;
return it->second;
}
DiskPtr DiskSelector::get(const String & name) const
{
auto disk = tryGet(name);
if (!disk)
throw Exception(ErrorCodes::UNKNOWN_DISK, "Unknown disk {}", name);
return disk;
}
const DisksMap & DiskSelector::getDisksMap() const
{
assertInitialized();
return disks;
}
void DiskSelector::addToDiskMap(const String & name, DiskPtr disk)
{
assertInitialized();
recordDisk(name, disk);
}
void DiskSelector::shutdown()
{
assertInitialized();
for (auto & e : disks)
e.second->shutdown();
}
}