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#include "temp.h"
#include "errors.h"
#include <yt/cpp/mapreduce/interface/config.h>
#include <util/system/yassert.h>
namespace NYT {
////////////////////////////////////////////////////////////////////////////////
TTempTable::TTempTable(
IClientBasePtr client,
const TString& prefix,
const TYPath& directory,
const TCreateOptions& options)
: Client_(std::move(client))
{
Name_ = CreateTempTable(Client_, prefix, directory, options);
}
TTempTable::TTempTable(TTempTable::TPrivateConstuctorTag, IClientBasePtr client, TYPath path, const TCreateOptions& options)
: Client_(std::move(client))
, Name_(std::move(path))
{
Client_->Create(Name_, NT_TABLE, options);
}
TTempTable::TTempTable(TTempTable&& sourceTable)
: Client_(sourceTable.Client_)
, Name_(sourceTable.Name_)
, Owns_(sourceTable.Owns_)
{
sourceTable.Owns_ = false;
}
TTempTable& TTempTable::operator=(TTempTable&& sourceTable)
{
if (&sourceTable == this) {
return *this;
}
if (Owns_) {
RemoveTable();
}
Client_ = sourceTable.Client_;
Name_ = sourceTable.Name_;
Owns_ = sourceTable.Owns_;
sourceTable.Owns_ = false;
return *this;
}
TTempTable TTempTable::CreateAutoremovingTable(IClientBasePtr client, TYPath path, const TCreateOptions& options)
{
return TTempTable(TTempTable::TPrivateConstuctorTag(), std::move(client), std::move(path), options);
}
void TTempTable::RemoveTable()
{
if (TConfig::Get()->KeepTempTables) {
return;
}
Client_->Remove(Name_, TRemoveOptions().Force(true));
}
TTempTable::~TTempTable()
{
if (Owns_) {
try {
RemoveTable();
} catch (...) {
}
}
}
TString TTempTable::Name() const &
{
return Name_;
}
TString TTempTable::Release()
{
Y_ASSERT(Owns_);
Owns_ = false;
return Name_;
}
////////////////////////////////////////////////////////////////////////////////
TYPath CreateTempTable(
const IClientBasePtr& client,
const TString& prefix,
const TYPath& directory,
const TCreateOptions& options)
{
TYPath result;
bool createDirectory = false;
if (directory) {
result = directory;
} else {
result = TConfig::Get()->RemoteTempTablesDirectory;
// User might override configuration above.
// Class used to create directory in such cases if it doesn't exist.
// We keep this behaviour.
createDirectory = true;
}
if (result == DefaultRemoteTempTablesDirectory) {
result += "/";
result += client->GetParentClient()->WhoAmI().Login;
createDirectory = true;
}
auto resultDirectory = result;
result += "/";
result += prefix;
result += CreateGuidAsString();
if (!createDirectory) {
client->Create(result, NT_TABLE, options);
} else {
// Directory we are going to create our table in can be missing.
// We create it explicitly outside of any transactions,
// because concurrent processes might want to create the same directory from other transactions.
//
// It's unlikely but directory might be removed between directory creation and table creation
// we retry attempt if it was failed with path resolution error.
const int maxAttempts = 3;
for (int i = 0; i < maxAttempts; ++i) {
client->GetParentClient()->Create(resultDirectory, NT_MAP, TCreateOptions().Recursive(true).IgnoreExisting(true));
try {
client->Create(result, NT_TABLE, options);
break;
} catch (const TErrorResponse& error) {
if (error.IsResolveError()) {
if (i < maxAttempts - 1) {
continue;
}
}
throw;
}
}
}
return result;
}
////////////////////////////////////////////////////////////////////////////////
} // namespace NYT
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