ClickHouse/programs/odbc-bridge/IdentifierQuoteHandler.cpp

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#include "IdentifierQuoteHandler.h"
#if USE_ODBC
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#include <DataTypes/DataTypeFactory.h>
#include <Server/HTTP/HTMLForm.h>
#include <Server/HTTP/WriteBufferFromHTTPServerResponse.h>
#include <IO/WriteHelpers.h>
#include <Parsers/ParserQueryWithOutput.h>
#include <Parsers/parseQuery.h>
#include <Poco/Net/HTTPServerRequest.h>
#include <Poco/Net/HTTPServerResponse.h>
#include <common/logger_useful.h>
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#include <common/scope_guard.h>
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#include "getIdentifierQuote.h"
#include "validateODBCConnectionString.h"
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#include "ODBCConnectionFactory.h"
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namespace DB
{
void IdentifierQuoteHandler::handleRequest(HTTPServerRequest & request, HTTPServerResponse & response)
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{
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HTMLForm params(getContext()->getSettingsRef(), request, request.getStream());
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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;
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LOG_WARNING(log, message);
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};
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");
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auto connection = ODBCConnectionFactory::instance().get(
validateODBCConnectionString(connection_string),
getContext()->getSettingsRef().odbc_bridge_connection_pool_size);
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auto identifier = getIdentifierQuote(std::move(connection));
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WriteBufferFromHTTPServerResponse out(response, request.getMethod() == Poco::Net::HTTPRequest::HTTP_HEAD, keep_alive_timeout);
try
{
writeStringBinary(identifier, out);
out.finalize();
}
catch (...)
{
out.finalize();
}
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}
catch (...)
{
process_error("Error getting identifier quote style from ODBC '" + getCurrentExceptionMessage(false) + "'");
tryLogCurrentException(log);
}
}
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}
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#endif