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https://github.com/ClickHouse/ClickHouse.git
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121 lines
3.9 KiB
C++
121 lines
3.9 KiB
C++
#pragma once
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#include <cerrno>
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#include <vector>
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#include <memory>
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#include <Poco/Exception.h>
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#include <DB/Common/StackTrace.h>
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namespace Poco { class Logger; }
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namespace DB
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{
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class Exception : public Poco::Exception
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{
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public:
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Exception(int code = 0) : Poco::Exception(code) {}
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Exception(const std::string & msg, int code = 0) : Poco::Exception(msg, code) {}
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Exception(const std::string & msg, const std::string & arg, int code = 0) : Poco::Exception(msg, arg, code) {}
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Exception(const std::string & msg, const Exception & exc, int code = 0) : Poco::Exception(msg, exc, code), trace(exc.trace) {}
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Exception(const Exception & exc) : Poco::Exception(exc), trace(exc.trace) {}
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explicit Exception(const Poco::Exception & exc) : Poco::Exception(exc.displayText()) {}
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~Exception() throw() override {}
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Exception & operator = (const Exception & exc)
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{
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Poco::Exception::operator=(exc);
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trace = exc.trace;
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return *this;
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}
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const char * name() const throw() override { return "DB::Exception"; }
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const char * className() const throw() override { return "DB::Exception"; }
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DB::Exception * clone() const override { return new DB::Exception(*this); }
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void rethrow() const override { throw *this; }
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/// Дописать к существующему сообщению что-нибудь ещё.
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void addMessage(const std::string & arg) { extendedMessage(arg); }
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const StackTrace & getStackTrace() const { return trace; }
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private:
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StackTrace trace;
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};
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/// Содержит дополнительный член saved_errno. См. функцию throwFromErrno.
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class ErrnoException : public Exception
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{
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public:
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ErrnoException(int code = 0, int saved_errno_ = 0)
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: Exception(code), saved_errno(saved_errno_) {}
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ErrnoException(const std::string & msg, int code = 0, int saved_errno_ = 0)
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: Exception(msg, code), saved_errno(saved_errno_) {}
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ErrnoException(const std::string & msg, const std::string & arg, int code = 0, int saved_errno_ = 0)
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: Exception(msg, arg, code), saved_errno(saved_errno_) {}
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ErrnoException(const std::string & msg, const Exception & exc, int code = 0, int saved_errno_ = 0)
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: Exception(msg, exc, code), saved_errno(saved_errno_) {}
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ErrnoException(const ErrnoException & exc)
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: Exception(exc), saved_errno(exc.saved_errno) {}
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int getErrno() const { return saved_errno; }
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private:
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int saved_errno;
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};
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using Exceptions = std::vector<std::exception_ptr>;
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void throwFromErrno(const std::string & s, int code = 0, int the_errno = errno);
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/** Попробовать записать исключение в лог (и забыть про него).
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* Можно использовать в деструкторах в блоке catch (...).
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*/
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void tryLogCurrentException(const char * log_name, const std::string & start_of_message = "");
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void tryLogCurrentException(Poco::Logger * logger, const std::string & start_of_message = "");
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/** Prints current exception in canonical format.
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* with_stacktrace - prints stack trace for DB::Exception.
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* check_embedded_stacktrace - if DB::Exception has embedded stacktrace then
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* only this stack trace will be printed.
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*/
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std::string getCurrentExceptionMessage(bool with_stacktrace, bool check_embedded_stacktrace = false);
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/// Returns error code from ErrorCodes
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int getCurrentExceptionCode();
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void tryLogException(std::exception_ptr e, const char * log_name, const std::string & start_of_message = "");
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void tryLogException(std::exception_ptr e, Poco::Logger * logger, const std::string & start_of_message = "");
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std::string getExceptionMessage(std::exception_ptr e, bool with_stacktrace);
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void rethrowFirstException(const Exceptions & exceptions);
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std::unique_ptr<Poco::Exception> convertCurrentException();
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template <typename T>
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typename std::enable_if<std::is_pointer<T>::value, T>::type exception_cast(std::exception_ptr e)
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{
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try
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{
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std::rethrow_exception(e);
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}
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catch (typename std::remove_pointer<T>::type & concrete)
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{
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return &concrete;
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}
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catch (...)
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{
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return nullptr;
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}
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}
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}
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