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