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

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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, 74 insertions, 0 deletions

diff --git a/yt/cpp/mapreduce/interface/job_counters.h b/yt/cpp/mapreduce/interface/job_counters.h
new file mode 100644
index 0000000000..9257cc1ec1
--- /dev/null
+++ b/yt/cpp/mapreduce/interface/job_counters.h
@@ -0,0 +1,74 @@
+#pragma once
+
+#include "fwd.h"
+
+#include <yt/cpp/mapreduce/interface/node.h>
+
+namespace NYT {
+
+class TJobCounter
+{
+private:
+    TNode Data_;
+    ui64 Total_ = 0;
+
+public:
+    TJobCounter() = default;
+
+    TJobCounter(TNode data);
+    TJobCounter(ui64 total);
+
+    ui64 GetTotal() const;
+
+    ui64 GetValue(const TStringBuf key) const;
+};
+
+/// Class representing a collection of job counters.
+class TJobCounters
+{
+public:
+    ///
+    /// Construct empty counter.
+    TJobCounters() = default;
+
+    ///
+    /// Construct counter from counters node.
+    TJobCounters(const NYT::TNode& counters);
+
+    const TJobCounter& GetAborted() const;
+    const TJobCounter& GetAbortedScheduled() const;
+    const TJobCounter& GetAbortedNonScheduled() const;
+    const TJobCounter& GetCompleted() const;
+    const TJobCounter& GetCompletedNonInterrupted() const;
+    const TJobCounter& GetCompletedInterrupted() const;
+    const TJobCounter& GetLost() const;
+    const TJobCounter& GetInvalidated() const;
+    const TJobCounter& GetFailed() const;
+    const TJobCounter& GetRunning() const;
+    const TJobCounter& GetSuspended() const;
+    const TJobCounter& GetPending() const;
+    const TJobCounter& GetBlocked() const;
+
+    ui64 GetTotal() const;
+
+private:
+    ui64 Total_ = 0;
+
+    TJobCounter Aborted_;
+    TJobCounter AbortedScheduled_;
+    TJobCounter AbortedNonScheduled_;
+    TJobCounter Completed_;
+    TJobCounter CompletedNonInterrupted_;
+    TJobCounter CompletedInterrupted_;
+    TJobCounter Lost_;
+    TJobCounter Invalidated_;
+    TJobCounter Failed_;
+    TJobCounter Running_;
+    TJobCounter Suspended_;
+    TJobCounter Pending_;
+    TJobCounter Blocked_;
+};
+
+////////////////////////////////////////////////////////////////////
+
+} // namespace NYT