mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-12-16 11:22:12 +00:00
118 lines
3.5 KiB
C++
118 lines
3.5 KiB
C++
#include <Interpreters/InterpreterSystemQuery.h>
|
|
#include <Common/DNSCache.h>
|
|
#include <Interpreters/Context.h>
|
|
#include <Interpreters/ExternalDictionaries.h>
|
|
#include <Interpreters/EmbeddedDictionaries.h>
|
|
#include <Parsers/ASTSystemQuery.h>
|
|
#include <Common/typeid_cast.h>
|
|
#include <csignal>
|
|
|
|
|
|
namespace DB
|
|
{
|
|
|
|
|
|
namespace ErrorCodes
|
|
{
|
|
extern const int BAD_ARGUMENTS;
|
|
extern const int CANNOT_KILL;
|
|
extern const int NOT_IMPLEMENTED;
|
|
}
|
|
|
|
|
|
namespace
|
|
{
|
|
|
|
ExecutionStatus getOverallExecutionStatusOfCommands()
|
|
{
|
|
return ExecutionStatus(0);
|
|
}
|
|
|
|
/// Consequently execute all commands and genreates final exception message for failed commands
|
|
template <typename Callable, typename ... Callables>
|
|
ExecutionStatus getOverallExecutionStatusOfCommands(Callable && command, Callables && ... commands)
|
|
{
|
|
ExecutionStatus status_head(0);
|
|
try
|
|
{
|
|
command();
|
|
}
|
|
catch (...)
|
|
{
|
|
status_head = ExecutionStatus::fromCurrentException();
|
|
}
|
|
|
|
ExecutionStatus status_tail = getOverallExecutionStatusOfCommands(std::forward<Callables>(commands)...);
|
|
|
|
auto res_status = status_head.code != 0 ? status_head.code : status_tail.code;
|
|
auto res_message = status_head.message + (status_tail.message.empty() ? "" : ("\n" + status_tail.message));
|
|
|
|
return ExecutionStatus(res_status, res_message);
|
|
}
|
|
|
|
}
|
|
|
|
|
|
InterpreterSystemQuery::InterpreterSystemQuery(const ASTPtr & query_ptr_, Context & context_)
|
|
: query_ptr(query_ptr_), context(context_) {}
|
|
|
|
|
|
BlockIO InterpreterSystemQuery::execute()
|
|
{
|
|
auto & query = typeid_cast<ASTSystemQuery &>(*query_ptr);
|
|
|
|
using Type = ASTSystemQuery::Type;
|
|
|
|
switch (query.type)
|
|
{
|
|
case Type::SHUTDOWN:
|
|
if (kill(0, SIGTERM))
|
|
throwFromErrno("System call kill(0, SIGTERM) failed", ErrorCodes::CANNOT_KILL);
|
|
break;
|
|
case Type::KILL:
|
|
if (kill(0, SIGKILL))
|
|
throwFromErrno("System call kill(0, SIGKILL) failed", ErrorCodes::CANNOT_KILL);
|
|
break;
|
|
case Type::DROP_DNS_CACHE:
|
|
DNSCache::instance().drop();
|
|
/// Reinitialize clusters to update their resolved_addresses
|
|
context.reloadClusterConfig();
|
|
break;
|
|
case Type::DROP_MARK_CACHE:
|
|
context.dropMarkCache();
|
|
break;
|
|
case Type::DROP_UNCOMPRESSED_CACHE:
|
|
context.dropUncompressedCache();
|
|
break;
|
|
case Type::RELOAD_DICTIONARY:
|
|
context.getExternalDictionaries().reloadDictionary(query.target_dictionary);
|
|
break;
|
|
case Type::RELOAD_DICTIONARIES:
|
|
{
|
|
auto status = getOverallExecutionStatusOfCommands(
|
|
[&] { context.getExternalDictionaries().reload(); },
|
|
[&] { context.getEmbeddedDictionaries().reload(); }
|
|
);
|
|
if (status.code != 0)
|
|
throw Exception(status.message, status.code);
|
|
break;
|
|
}
|
|
case Type::STOP_LISTEN_QUERIES:
|
|
case Type::START_LISTEN_QUERIES:
|
|
case Type::RESTART_REPLICAS:
|
|
case Type::SYNC_REPLICA:
|
|
case Type::STOP_MERGES:
|
|
case Type::START_MERGES:
|
|
case Type::STOP_REPLICATION_QUEUES:
|
|
case Type::START_REPLICATION_QUEUES:
|
|
throw Exception(String(ASTSystemQuery::typeToString(query.type)) + " is not supported yet", ErrorCodes::NOT_IMPLEMENTED);
|
|
default:
|
|
throw Exception("Unknown type of SYSTEM query", ErrorCodes::BAD_ARGUMENTS);
|
|
}
|
|
|
|
return BlockIO();
|
|
}
|
|
|
|
|
|
}
|