YQ Connector: support managed ClickHouse

Со стороны dqrun можно обратиться к инстансу коннектора, который работает на streaming стенде, и извлечь данные из облачного CH.

1 files changed, 100 insertions, 0 deletions

diff --git a/contrib/libs/clang16/include/clang/Basic/FileSystemStatCache.h b/contrib/libs/clang16/include/clang/Basic/FileSystemStatCache.h
new file mode 100644
index 0000000000..30c14efc7a
--- /dev/null
+++ b/contrib/libs/clang16/include/clang/Basic/FileSystemStatCache.h
@@ -0,0 +1,100 @@
+#pragma once
+
+#ifdef __GNUC__
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wunused-parameter"
+#endif
+
+//===- FileSystemStatCache.h - Caching for 'stat' calls ---------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+/// \file
+/// Defines the FileSystemStatCache interface.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_CLANG_BASIC_FILESYSTEMSTATCACHE_H
+#define LLVM_CLANG_BASIC_FILESYSTEMSTATCACHE_H
+
+#include "clang/Basic/LLVM.h"
+#include "llvm/ADT/StringMap.h"
+#include "llvm/ADT/StringRef.h"
+#include "llvm/Support/Allocator.h"
+#include "llvm/Support/FileSystem.h"
+#include "llvm/Support/VirtualFileSystem.h"
+#include <cstdint>
+#include <ctime>
+#include <memory>
+#include <optional>
+#include <string>
+#include <utility>
+
+namespace clang {
+
+/// Abstract interface for introducing a FileManager cache for 'stat'
+/// system calls, which is used by precompiled and pretokenized headers to
+/// improve performance.
+class FileSystemStatCache {
+  virtual void anchor();
+
+public:
+  virtual ~FileSystemStatCache() = default;
+
+  /// Get the 'stat' information for the specified path, using the cache
+  /// to accelerate it if possible.
+  ///
+  /// \returns \c true if the path does not exist or \c false if it exists.
+  ///
+  /// If isFile is true, then this lookup should only return success for files
+  /// (not directories).  If it is false this lookup should only return
+  /// success for directories (not files).  On a successful file lookup, the
+  /// implementation can optionally fill in \p F with a valid \p File object and
+  /// the client guarantees that it will close it.
+  static std::error_code
+  get(StringRef Path, llvm::vfs::Status &Status, bool isFile,
+      std::unique_ptr<llvm::vfs::File> *F,
+      FileSystemStatCache *Cache, llvm::vfs::FileSystem &FS);
+
+protected:
+  // FIXME: The pointer here is a non-owning/optional reference to the
+  // unique_ptr. std::optional<unique_ptr<vfs::File>&> might be nicer, but
+  // Optional needs some work to support references so this isn't possible yet.
+  virtual std::error_code getStat(StringRef Path, llvm::vfs::Status &Status,
+                                  bool isFile,
+                                  std::unique_ptr<llvm::vfs::File> *F,
+                                  llvm::vfs::FileSystem &FS) = 0;
+};
+
+/// A stat "cache" that can be used by FileManager to keep
+/// track of the results of stat() calls that occur throughout the
+/// execution of the front end.
+class MemorizeStatCalls : public FileSystemStatCache {
+public:
+  /// The set of stat() calls that have been seen.
+  llvm::StringMap<llvm::vfs::Status, llvm::BumpPtrAllocator> StatCalls;
+
+  using iterator =
+      llvm::StringMap<llvm::vfs::Status,
+                      llvm::BumpPtrAllocator>::const_iterator;
+
+  iterator begin() const { return StatCalls.begin(); }
+  iterator end() const { return StatCalls.end(); }
+
+  std::error_code getStat(StringRef Path, llvm::vfs::Status &Status,
+                          bool isFile,
+                          std::unique_ptr<llvm::vfs::File> *F,
+                          llvm::vfs::FileSystem &FS) override;
+};
+
+} // namespace clang
+
+#endif // LLVM_CLANG_BASIC_FILESYSTEMSTATCACHE_H
+
+#ifdef __GNUC__
+#pragma GCC diagnostic pop
+#endif