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#pragma once
#include <Core/BackgroundSchedulePool.h>
#include <Interpreters/Context_fwd.h>
namespace DB
{
/// Add a task to BackgroundProcessingPool that resolves all hosts and updates cache with constant period.
class DNSCacheUpdater : WithContext
{
public:
DNSCacheUpdater(ContextPtr context, Int32 update_period_seconds_, UInt32 max_consecutive_failures);
~DNSCacheUpdater();
void start();
private:
void run();
Int32 update_period_seconds;
UInt32 max_consecutive_failures;
BackgroundSchedulePool & pool;
BackgroundSchedulePoolTaskHolder task_handle;
};
}
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