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#include <Parsers/FieldFromAST.h>
#include <Disks/getOrCreateDiskFromAST.h>
#include <Parsers/formatAST.h>
#include <Parsers/ASTIdentifier.h>
#include <Parsers/ASTLiteral.h>
#include <Parsers/ASTFunction.h>
#include <Parsers/isDiskFunction.h>
#include <Common/assert_cast.h>
#include <Interpreters/InDepthNodeVisitor.h>
namespace DB
{
namespace ErrorCodes
{
extern const int LOGICAL_ERROR;
extern const int BAD_ARGUMENTS;
}
Field createFieldFromAST(ASTPtr ast)
{
return CustomType(std::make_shared<FieldFromASTImpl>(ast));
}
[[noreturn]] void FieldFromASTImpl::throwNotImplemented(std::string_view method) const
{
throw Exception(ErrorCodes::LOGICAL_ERROR, "Method {} not implemented for {}", method, getTypeName());
}
bool FieldFromASTImpl::isSecret() const
{
return isDiskFunction(ast);
}
class DiskConfigurationMasker
{
public:
struct Data {};
static bool needChildVisit(const ASTPtr &, const ASTPtr &) { return true; }
static void visit(ASTPtr & ast, Data &)
{
if (isDiskFunction(ast))
{
const auto & disk_function = assert_cast<const ASTFunction &>(*ast);
const auto * disk_function_args_expr = assert_cast<const ASTExpressionList *>(disk_function.arguments.get());
const auto & disk_function_args = disk_function_args_expr->children;
auto is_secret_arg = [](const std::string & arg_name)
{
/// We allow to not hide type of the disk, e.g. disk(type = s3, ...)
/// and also nested disk, e.g. disk = 'disk_name'
return arg_name != "type" && arg_name != "disk";
};
for (const auto & arg : disk_function_args)
{
auto * setting_function = arg->as<ASTFunction>();
if (!setting_function || setting_function->name != "equals")
throw Exception(ErrorCodes::BAD_ARGUMENTS, "Bad format: expected equals function");
auto * function_args_expr = assert_cast<ASTExpressionList *>(setting_function->arguments.get());
if (!function_args_expr)
throw Exception(ErrorCodes::BAD_ARGUMENTS, "Bad format: expected arguments");
auto & function_args = function_args_expr->children;
if (function_args.empty())
throw Exception(ErrorCodes::BAD_ARGUMENTS, "Bad format: expected non zero number of arguments");
auto * key_identifier = function_args[0]->as<ASTIdentifier>();
if (!key_identifier)
throw Exception(ErrorCodes::BAD_ARGUMENTS, "Bad format: expected Identifier");
const std::string & key = key_identifier->name();
if (is_secret_arg(key))
function_args[1] = std::make_shared<ASTLiteral>("[HIDDEN]");
}
}
}
};
/// Visits children first.
using HideDiskConfigurationVisitor = InDepthNodeVisitor<DiskConfigurationMasker, false>;
String FieldFromASTImpl::toString(bool show_secrets) const
{
if (!show_secrets && isDiskFunction(ast))
{
auto hidden = ast->clone();
HideDiskConfigurationVisitor::Data data{};
HideDiskConfigurationVisitor{data}.visit(hidden);
return serializeAST(*hidden);
}
return serializeAST(*ast);
}
}
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