ClickHouse/dbms/programs/odbc-bridge/IdentifierQuoteHandler.cpp

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#include "IdentifierQuoteHandler.h"
#if USE_POCO_SQLODBC || USE_POCO_DATAODBC
#if USE_POCO_SQLODBC
#include <Poco/SQL/ODBC/ODBCException.h>
#include <Poco/SQL/ODBC/SessionImpl.h>
#include <Poco/SQL/ODBC/Utility.h>
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#define POCO_SQL_ODBC_CLASS Poco::SQL::ODBC
#endif
#if USE_POCO_DATAODBC
#include <Poco/Data/ODBC/ODBCException.h>
#include <Poco/Data/ODBC/SessionImpl.h>
#include <Poco/Data/ODBC/Utility.h>
#define POCO_SQL_ODBC_CLASS Poco::Data::ODBC
#endif
#include <DataTypes/DataTypeFactory.h>
#include <IO/WriteBufferFromHTTPServerResponse.h>
#include <IO/WriteHelpers.h>
#include <Parsers/ParserQueryWithOutput.h>
#include <Parsers/parseQuery.h>
#include <Poco/Net/HTMLForm.h>
#include <Poco/Net/HTTPServerRequest.h>
#include <Poco/Net/HTTPServerResponse.h>
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#include <common/logger_useful.h>
#include <ext/scope_guard.h>
#include "getIdentifierQuote.h"
#include "validateODBCConnectionString.h"
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namespace DB
{
void IdentifierQuoteHandler::handleRequest(Poco::Net::HTTPServerRequest & request, Poco::Net::HTTPServerResponse & response)
{
Poco::Net::HTMLForm params(request, request.stream());
LOG_TRACE(log, "Request URI: " + request.getURI());
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auto process_error = [&response, this](const std::string & message)
{
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response.setStatusAndReason(Poco::Net::HTTPResponse::HTTP_INTERNAL_SERVER_ERROR);
if (!response.sent())
response.send() << message << std::endl;
LOG_WARNING(log, message);
};
if (!params.has("connection_string"))
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{
process_error("No 'connection_string' in request URL");
return;
}
try
{
std::string connection_string = params.get("connection_string");
POCO_SQL_ODBC_CLASS::SessionImpl session(validateODBCConnectionString(connection_string), DBMS_DEFAULT_CONNECT_TIMEOUT_SEC);
SQLHDBC hdbc = session.dbc().handle();
auto identifier = getIdentifierQuote(hdbc);
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WriteBufferFromHTTPServerResponse out(request, response, keep_alive_timeout);
writeStringBinary(identifier, out);
}
catch (...)
{
process_error("Error getting identifier quote style from ODBC '" + getCurrentExceptionMessage(false) + "'");
tryLogCurrentException(log);
}
}
}
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#endif