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dbms: better exception messages [#METR-8224].

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This commit is contained in:
Alexey Milovidov 2013-10-26 03:20:51 +00:00
parent fa7a666a96
commit a38317e1f5
19 changed files with 87 additions and 65 deletions
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6
dbms/include/DB/Client/ConnectionPoolWithFailover.h
View File

@ -54,12 +54,12 @@ public:
res->forceConnected();
return res;
}
catch (const DB::Exception & e)
catch (const Exception & e)
{
if (e.code() != ErrorCodes::NETWORK_ERROR && e.code() != ErrorCodes::SOCKET_TIMEOUT)
throw;
fail_message << "DB::Exception. Code: " << e.code() << ", e.displayText() = " << e.displayText() << ", e.what() = " << e.what();
fail_message << "Code: " << e.code() << ", e.displayText() = " << e.displayText() << ", e.what() = " << e.what();
}
LOG_WARNING(log, "Connection failed at try №"
@ -71,7 +71,7 @@ public:
}
}
throw DB::Exception("All connection tries failed. Log: \n\n" + fail_messages.str() + "\n",
throw Exception("All connection tries failed. Log: \n\n" + fail_messages.str() + "\n",
ErrorCodes::ALL_CONNECTION_TRIES_FAILED);
}

3
dbms/include/DB/Core/Exception.h
View File

@ -28,6 +28,9 @@ public:
Exception * clone() const;
void rethrow() const;
/// Дописать к существующему сообщению что-нибудь ещё.
void addMessage(const std::string & arg);
const StackTrace & getStackTrace() const { return trace; }
private:

2
dbms/include/DB/IO/RemoteWriteBuffer.h
View File

@ -126,7 +126,7 @@ public:
{
impl->next();
}
catch (const DB::Exception & e)
catch (const Exception & e)
{
if (e.code() == ErrorCodes::CANNOT_WRITE_TO_OSTREAM)
checkStatus(); /// Меняем сообщение об ошибке на более ясное.

4
dbms/src/Client/Client.cpp
View File

@ -213,7 +213,7 @@ private:
{
return mainImpl(args);
}
catch (const DB::Exception & e)
catch (const Exception & e)
{
std::string text = e.displayText();
@ -399,7 +399,7 @@ private:
if (!process(query))
break;
}
catch (const DB::Exception & e)
catch (const Exception & e)
{
std::cerr << std::endl
<< "Exception on client:" << std::endl

75
dbms/src/Client/Connection.cpp
View File

@ -269,46 +269,57 @@ Connection::Packet Connection::receivePacket()
{
//LOG_TRACE(log, "Receiving packet (" << getServerAddress() << ")");
Packet res;
readVarUInt(res.type, *in);
switch (res.type)
try
{
case Protocol::Server::Data:
res.block = receiveData();
return res;
Packet res;
readVarUInt(res.type, *in);
case Protocol::Server::Exception:
res.exception = receiveException();
return res;
switch (res.type)
{
case Protocol::Server::Data:
res.block = receiveData();
return res;
case Protocol::Server::Progress:
res.progress = receiveProgress();
return res;
case Protocol::Server::Exception:
res.exception = receiveException();
return res;
case Protocol::Server::ProfileInfo:
res.profile_info = receiveProfileInfo();
return res;
case Protocol::Server::Progress:
res.progress = receiveProgress();
return res;
case Protocol::Server::Totals:
/// Блок с тотальными значениями передаётся так же, как обычный блок данных. Разница только в идентификаторе пакета.
res.block = receiveData();
return res;
case Protocol::Server::ProfileInfo:
res.profile_info = receiveProfileInfo();
return res;
case Protocol::Server::Extremes:
/// Аналогично.
res.block = receiveData();
return res;
case Protocol::Server::Totals:
/// Блок с тотальными значениями передаётся так же, как обычный блок данных. Разница только в идентификаторе пакета.
res.block = receiveData();
return res;
case Protocol::Server::EndOfStream:
return res;
case Protocol::Server::Extremes:
/// Аналогично.
res.block = receiveData();
return res;
default:
/// Закроем соединение, чтобы не было рассинхронизации.
disconnect();
throw Exception("Unknown packet "
+ toString(res.type)
+ " from server " + getServerAddress(), ErrorCodes::UNKNOWN_PACKET_FROM_SERVER);
case Protocol::Server::EndOfStream:
return res;
default:
/// Закроем соединение, чтобы не было рассинхронизации.
disconnect();
throw Exception("Unknown packet "
+ toString(res.type)
+ " from server " + getServerAddress(), ErrorCodes::UNKNOWN_PACKET_FROM_SERVER);
}
}
catch (Exception & e)
{
/// Дописываем в текст исключения адрес сервера, если надо.
if (e.code() != ErrorCodes::UNKNOWN_PACKET_FROM_SERVER)
e.addMessage("while receiving packet from " + getServerAddress());
throw;
}
}

5
dbms/src/Core/Exception.cpp
View File

@ -44,6 +44,11 @@ void Exception::rethrow() const
throw *this;
}
void Exception::addMessage(const std::string & arg)
{
extendedMessage(arg);
}
void throwFromErrno(const std::string & s, int code, int e)
{

5
dbms/src/DataStreams/BlockInputStreamFromRowInputStream.cpp
View File

@ -48,9 +48,10 @@ Block BlockInputStreamFromRowInputStream::readImpl()
res.getByPosition(i).column->insert(row[i]);
}
}
catch (const DB::Exception & e)
catch (Exception & e)
{
throw DB::Exception(e.message() + " (at row " + toString(total_rows + 1) + ")", e, e.code());
e.addMessage("(at row " + toString(total_rows + 1) + ")");
throw;
}
res.optimizeNestedArraysOffsets();

2
dbms/src/IO/ReadHelpers.cpp
View File

@ -125,7 +125,7 @@ void readEscapedString(DB::String & s, DB::ReadBuffer & buf)
{
++buf.position();
if (buf.eof())
throw DB::Exception("Cannot parse escape sequence", DB::ErrorCodes::CANNOT_PARSE_ESCAPE_SEQUENCE);
throw Exception("Cannot parse escape sequence", DB::ErrorCodes::CANNOT_PARSE_ESCAPE_SEQUENCE);
s += DB::parseEscapeSequence(*buf.position());
++buf.position();
}

2
dbms/src/Interpreters/Context.cpp
View File

@ -264,7 +264,7 @@ ASTPtr Context::getCreateQuery(const String & database_name, const String & tabl
/// Распарсенный запрос должен заканчиваться на конец входных данных или на точку с запятой.
if (!parse_res || (pos != end && *pos != ';'))
throw DB::Exception("Syntax error while parsing query from file " + metadata_path + ": failed at position "
throw Exception("Syntax error while parsing query from file " + metadata_path + ": failed at position "
+ toString(pos - begin) + ": "
+ std::string(pos, std::min(SHOW_CHARS_ON_SYNTAX_ERROR, end - pos))
+ ", expected " + (parse_res ? "end of query" : expected) + ".",

8
dbms/src/Interpreters/InterpreterAlterQuery.cpp
View File

@ -69,7 +69,7 @@ void InterpreterAlterQuery::execute()
/// Проверяем, что колонка еще не существует
if (std::find_if(columns_copy.begin(), columns_copy.end(), boost::bind(namesEqual, name_type.name, _1)) != columns_copy.end())
throw DB::Exception("Wrong column name. Column already exists", DB::ErrorCodes::ILLEGAL_COLUMN);
throw Exception("Wrong column name. Column already exists", DB::ErrorCodes::ILLEGAL_COLUMN);
/// Проверяем опциональный аргумент AFTER
ASTs::iterator insert_it = columns_copy.end();
@ -78,7 +78,7 @@ void InterpreterAlterQuery::execute()
const ASTIdentifier & col_after = dynamic_cast<const ASTIdentifier &>(*params.column);
insert_it = std::find_if(columns_copy.begin(), columns_copy.end(), boost::bind(namesEqual, col_after.name, _1)) ;
if (insert_it == columns_copy.end())
throw DB::Exception("Wrong column name. Cannot find column to insert after", DB::ErrorCodes::ILLEGAL_COLUMN);
throw Exception("Wrong column name. Cannot find column to insert after", DB::ErrorCodes::ILLEGAL_COLUMN);
}
columns_copy.insert(insert_it, params.name_type);
}
@ -88,11 +88,11 @@ void InterpreterAlterQuery::execute()
/// Проверяем, что поле не является ключевым
if (identifier_names.find(drop_column.name) != identifier_names.end())
throw DB::Exception("Cannot drop key column", DB::ErrorCodes::ILLEGAL_COLUMN);
throw Exception("Cannot drop key column", DB::ErrorCodes::ILLEGAL_COLUMN);
ASTs::iterator drop_it = std::find_if(columns_copy.begin(), columns_copy.end(), boost::bind(namesEqual, drop_column.name, _1));
if (drop_it == columns_copy.end())
throw DB::Exception("Wrong column name. Cannot find column to drop", DB::ErrorCodes::ILLEGAL_COLUMN);
throw Exception("Wrong column name. Cannot find column to drop", DB::ErrorCodes::ILLEGAL_COLUMN);
else
columns_copy.erase(drop_it);
}

2
dbms/src/Interpreters/InterpreterSelectQuery.cpp
View File

@ -471,6 +471,8 @@ void InterpreterSelectQuery::executeAggregation(BlockInputStreams & streams, Exp
AggregateDescriptions aggregates;
query_analyzer->getAggregateInfo(key_names, aggregates);
/// TODO: Оптимизация для случая, когда есть LIMIT, но нет HAVING и ORDER BY.
bool separate_totals = to_stage > QueryProcessingStage::WithMergeableState;
/// Если источников несколько, то выполняем параллельную агрегацию

4
dbms/src/Interpreters/loadMetadata.cpp
View File

@ -33,7 +33,7 @@ static void executeCreateQuery(const String & query, Context & context, const St
/// Распарсенный запрос должен заканчиваться на конец входных данных или на точку с запятой.
if (!parse_res || (pos != end && *pos != ';'))
throw DB::Exception("Syntax error while executing query from file " + file_name + ": failed at position "
throw Exception("Syntax error while executing query from file " + file_name + ": failed at position "
+ toString(pos - begin) + ": "
+ std::string(pos, std::min(SHOW_CHARS_ON_SYNTAX_ERROR, end - pos))
+ ", expected " + (parse_res ? "end of query" : expected) + ".",
@ -131,7 +131,7 @@ void loadMetadata(Context & context)
{
executeCreateQuery(s, context, it.name(), tables[j]);
}
catch (const DB::Exception & e)
catch (const Exception & e)
{
throw Exception("Cannot create table from metadata file " + tables[j] + ", error: " + e.displayText(),
ErrorCodes::CANNOT_CREATE_TABLE_FROM_METADATA);

2
dbms/src/Parsers/formatAST.cpp
View File

@ -68,7 +68,7 @@ void formatAST(const IAST & ast, std::ostream & s, size_t indent, bool hilite, b
DISPATCH(AlterQuery)
DISPATCH(ShowProcesslistQuery)
else
throw DB::Exception("Unknown element in AST: " + ast.getID() + " '" + std::string(ast.range.first, ast.range.second - ast.range.first) + "'",
throw Exception("Unknown element in AST: " + ast.getID() + " '" + std::string(ast.range.first, ast.range.second - ast.range.first) + "'",
ErrorCodes::UNKNOWN_ELEMENT_IN_AST);
#undef DISPATCH

2
dbms/src/Server/HTTPHandler.cpp
View File

@ -167,7 +167,7 @@ void HTTPHandler::handleRequest(Poco::Net::HTTPServerRequest & request, Poco::Ne
processQuery(request, response);
LOG_INFO(log, "Done processing query");
}
catch (DB::Exception & e)
catch (Exception & e)
{
response.setStatusAndReason(Poco::Net::HTTPResponse::HTTP_INTERNAL_SERVER_ERROR);
std::stringstream s;

2
dbms/src/Server/OLAPHTTPHandler.cpp
View File

@ -103,7 +103,7 @@ namespace DB
processQuery(request, response);
LOG_INFO(log, "Done processing query");
}
catch (DB::Exception & e)
catch (Exception & e)
{
response.setStatusAndReason(Poco::Net::HTTPResponse::HTTP_INTERNAL_SERVER_ERROR);
std::stringstream s;

14
dbms/src/Server/TCPHandler.cpp
View File

@ -43,7 +43,7 @@ void TCPHandler::runImpl()
{
receiveHello();
}
catch (const DB::Exception & e) /// Типично при неправильном имени пользователя, пароле, адресе.
catch (const Exception & e) /// Типично при неправильном имени пользователя, пароле, адресе.
{
try
{
@ -61,7 +61,7 @@ void TCPHandler::runImpl()
if (!connection_context.isDatabaseExist(default_database))
{
Exception e("Database " + default_database + " doesn't exist", ErrorCodes::UNKNOWN_DATABASE);
LOG_ERROR(log, "DB::Exception. Code: " << e.code() << ", e.displayText() = " << e.displayText()
LOG_ERROR(log, "Code: " << e.code() << ", e.displayText() = " << e.displayText()
<< ", Stack trace:\n\n" << e.getStackTrace().toString());
sendException(e);
return;
@ -90,7 +90,7 @@ void TCPHandler::runImpl()
/** Исключение во время выполнения запроса (его надо отдать по сети клиенту).
* Клиент сможет его принять, если оно не произошло во время отправки другого пакета и клиент ещё не разорвал соединение.
*/
SharedPtr<DB::Exception> exception;
SharedPtr<Exception> exception;
try
{
@ -118,9 +118,9 @@ void TCPHandler::runImpl()
state.reset();
}
catch (const DB::Exception & e)
catch (const Exception & e)
{
LOG_ERROR(log, "DB::Exception. Code: " << e.code() << ", e.displayText() = " << e.displayText() << ", e.what() = " << e.what()
LOG_ERROR(log, "Code: " << e.code() << ", e.displayText() = " << e.displayText() << ", e.what() = " << e.what()
<< ", Stack trace:\n\n" << e.getStackTrace().toString());
exception = e.clone();
@ -621,9 +621,9 @@ void TCPHandler::run()
LOG_INFO(log, "Done processing connection.");
}
catch (DB::Exception & e)
catch (Exception & e)
{
LOG_ERROR(log, "DB::Exception. Code: " << e.code() << ", e.displayText() = " << e.displayText()
LOG_ERROR(log, "Code: " << e.code() << ", e.displayText() = " << e.displayText()
<< ", Stack trace:\n\n" << e.getStackTrace().toString());
}
catch (Poco::Exception & e)

4
dbms/src/Storages/IStorage.cpp
View File

@ -168,7 +168,7 @@ void IStorage::alter_columns(const ASTAlterQuery::Parameters & params, NamesAndT
NamesAndTypesList::reverse_iterator reverse_insert_it = std::find_if(columns->rbegin(), columns->rend(), boost::bind(namesEqual, column_name, _1) );
if (reverse_insert_it == columns->rend())
throw DB::Exception("Wrong column name. Cannot find column to insert after", DB::ErrorCodes::ILLEGAL_COLUMN);
throw Exception("Wrong column name. Cannot find column to insert after", DB::ErrorCodes::ILLEGAL_COLUMN);
else
{
/// base возвращает итератор уже смещенный на один элемент вправо
@ -206,7 +206,7 @@ void IStorage::alter_columns(const ASTAlterQuery::Parameters & params, NamesAndT
if (column_it == columns->end())
{
if (is_first)
throw DB::Exception("Wrong column name. Cannot find column to drop", DB::ErrorCodes::ILLEGAL_COLUMN);
throw Exception("Wrong column name. Cannot find column to drop", DB::ErrorCodes::ILLEGAL_COLUMN);
}
else
columns->erase(column_it);

6
dbms/src/Storages/StorageChunkMerger.cpp
View File

@ -172,9 +172,9 @@ void StorageChunkMerger::mergeThread()
merged = maybeMergeSomething();
error = false;
}
catch (const DB::Exception & e)
catch (const Exception & e)
{
LOG_ERROR(log, "StorageChunkMerger at " << this_database << "." << name << " failed to merge: DB::Exception. Code: " << e.code() << ", e.displayText() = " << e.displayText() << ", e.what() = " << e.what()
LOG_ERROR(log, "StorageChunkMerger at " << this_database << "." << name << " failed to merge: Code: " << e.code() << ", e.displayText() = " << e.displayText() << ", e.what() = " << e.what()
<< ", Stack trace:\n\n" << e.getStackTrace().toString());
}
catch (const Poco::Exception & e)
@ -351,7 +351,7 @@ bool StorageChunkMerger::mergeChunks(const Storages & chunks)
/// Распарсенный запрос должен заканчиваться на конец входных данных.
if (!parse_res || pos != end)
throw DB::Exception("Syntax error while parsing create query made by ChunkMerger."
throw Exception("Syntax error while parsing create query made by ChunkMerger."
" The query is \"" + create_query + "\"."
+ " Failed at position " + toString(pos - begin) + ": "
+ std::string(pos, std::min(SHOW_CHARS_ON_SYNTAX_ERROR, end - pos))

2
dbms/src/Storages/StorageChunkRef.cpp
View File

@ -49,7 +49,7 @@ void StorageChunkRef::dropImpl()
{
getSource().removeReference();
}
catch (const DB::Exception & e)
catch (const Exception & e)
{
if (e.code() != ErrorCodes::UNKNOWN_TABLE)
throw;