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74 lines
2.4 KiB
C++
74 lines
2.4 KiB
C++
#pragma once
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#include <Common/Exception.h>
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#include <zkutil/Types.h>
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#include <Common/ProfileEvents.h>
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namespace DB
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{
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namespace ErrorCodes
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{
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extern const int KEEPER_EXCEPTION;
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}
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}
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namespace ProfileEvents
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{
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extern const Event ZooKeeperExceptions;
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}
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namespace zkutil
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{
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class KeeperException : public DB::Exception
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{
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private:
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/// delegate constructor, used to minimize repetition; last parameter used for overload resolution
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KeeperException(const std::string & msg, const int32_t code, int)
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: DB::Exception(msg, DB::ErrorCodes::KEEPER_EXCEPTION), code(code) { incrementEventCounter(); }
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public:
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KeeperException(const std::string & msg) : KeeperException(msg, ZOK, 0) {}
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KeeperException(const std::string & msg, const int32_t code)
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: KeeperException(msg + " (" + zerror(code) + ")", code, 0) {}
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KeeperException(const int32_t code) : KeeperException(zerror(code), code, 0) {}
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KeeperException(const int32_t code, const std::string & path)
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: KeeperException(std::string{zerror(code)} + ", path: " + path, code, 0) {}
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KeeperException(const KeeperException & exc) : DB::Exception(exc), code(exc.code) { incrementEventCounter(); }
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const char * name() const throw() { return "zkutil::KeeperException"; }
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const char * className() const throw() { return "zkutil::KeeperException"; }
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KeeperException * clone() const { return new KeeperException(*this); }
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/// при этих ошибках надо переинициализировать сессию с zookeeper
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bool isUnrecoverable() const
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{
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return code == ZINVALIDSTATE || code == ZSESSIONEXPIRED || code == ZSESSIONMOVED;
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}
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/// любая ошибка связанная с работой сети, перевыбором мастера
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/// при этих ошибках надо либо повторить запрос повторно, либо переинициализировать сессию (см. isUnrecoverable())
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bool isHardwareError() const
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{
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return isUnrecoverable() || code == ZCONNECTIONLOSS || code == ZOPERATIONTIMEOUT;
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}
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bool isTemporaryError() const
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{
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return code == ZCONNECTIONLOSS || code == ZOPERATIONTIMEOUT;
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}
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const int32_t code;
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private:
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static void incrementEventCounter()
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{
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ProfileEvents::increment(ProfileEvents::ZooKeeperExceptions);
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}
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};
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};
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