YT-19324: move YT provider to ydb/library/yql

This commit is formed by the following script: https://paste.yandex-team.ru/6f92e4b8-efc5-4d34-948b-15ee2accd7e7/text.
This commit has zero effect on all projects that depend on YQL.

The summary of changes:
- `yql/providers/yt -> ydb/library/yql/providers/yt `- the whole implementation of YT provider is moved into YDB code base for further export as a part of YT YQL plugin shared library;
- `yql/providers/stat/{expr_nodes,uploader} -> ydb/library/yql/providers/stat/{expr_nodes,uploader}` - a small interface without implementation and the description of stat expr nodes;
- `yql/core/extract_predicate/ut -> ydb/library/yql/core/extract_predicate/ut`;
- `yql/core/{ut,ut_common} -> ydb/library/yql/core/{ut,ut_common}`;
- `yql/core` is gone;
- `yql/library/url_preprocessing -> ydb/library/yql/core/url_preprocessing`.

**NB**: all new targets inside `ydb/` are under `IF (NOT CMAKE_EXPORT)` clause which disables them from open-source cmake generation and ya make build. They will be enabled in the subsequent commits.

1 files changed, 52 insertions, 0 deletions

diff --git a/yt/cpp/mapreduce/http/retry_request.h b/yt/cpp/mapreduce/http/retry_request.h
new file mode 100644
index 0000000000..2210e318f1
--- /dev/null
+++ b/yt/cpp/mapreduce/http/retry_request.h
@@ -0,0 +1,52 @@
+#pragma once
+
+#include "fwd.h"
+
+#include <yt/cpp/mapreduce/interface/fwd.h>
+#include <yt/cpp/mapreduce/common/fwd.h>
+
+#include <yt/cpp/mapreduce/http/http_client.h>
+
+#include <util/datetime/base.h>
+#include <util/generic/maybe.h>
+#include <util/generic/string.h>
+
+namespace NYT::NDetail {
+
+////////////////////////////////////////////////////////////////////
+
+struct TResponseInfo
+{
+    TString RequestId;
+    TString Response;
+    int HttpCode = 0;
+};
+
+////////////////////////////////////////////////////////////////////
+
+struct TRequestConfig
+{
+    NHttpClient::THttpConfig HttpConfig;
+    bool IsHeavy = false;
+};
+
+////////////////////////////////////////////////////////////////////
+
+// Retry request with given `header' and `body' using `retryPolicy'.
+// If `retryPolicy == nullptr' use default, currently `TAttemptLimitedRetryPolicy(TConfig::Get()->RetryCount)`.
+TResponseInfo RetryRequestWithPolicy(
+    IRequestRetryPolicyPtr retryPolicy,
+    const TClientContext& context,
+    THttpHeader& header,
+    TMaybe<TStringBuf> body = {},
+    const TRequestConfig& config = TRequestConfig());
+
+TResponseInfo RequestWithoutRetry(
+    const TClientContext& context,
+    THttpHeader& header,
+    TMaybe<TStringBuf> body = {},
+    const TRequestConfig& config = TRequestConfig());
+
+////////////////////////////////////////////////////////////////////
+
+} // namespace NYT::NDetail