YT-21233: Introduce TErrorAttributes as an opaque type for attributes to hide dependencies on IAttributeDictionary's API

Plan:

1) Remove `IAttributedDictionary` type from the public API. \+

2) Remove `Set` method from public API in favor of `operator<<=`. \+

3) Adopt `ConvertTo<T>` (or other name) CPO with proper extension into `NYT::NYson::ConvertTo` from `yt/core`.

4) Use CPO from (3) to eliminate direct dependency on `yt/core` of `Get/Find` methods from attributes API.

5) Adopt `ConvertToYsonString` (or other name) CPO with proper extension into `yt/core` customisations.

6) Use CPO from (5) to eliminate direct dependency on `yt/core` of `TErrorAttribute` ctor.

7) Swap attributes implementation to the one which doesn’t use `IAttributeDictionary`.

8) At this point `stripped_error*` can be moved to library/cpp/yt and so can recursively dependant on THROW macro methods `Get/Find/…`.

9) Adjust CPO’s to work with `std::string` instead of `TYsonString` assuming text format to be used (maybe `TString` for now).

10) Remove dep of `library/cpp/yt/error` on `yson` entirely.

This pull request covers steps 1 and 2 laying foundation to 3-4 being implemented in the next one
commit_hash:e899bccdef4ebed321ea2eb93215282694c261ac

1 files changed, 62 insertions, 0 deletions

diff --git a/library/cpp/yt/error/error_attributes.cpp b/library/cpp/yt/error/error_attributes.cpp
new file mode 100644
index 0000000000..2c1b542314
--- /dev/null
+++ b/library/cpp/yt/error/error_attributes.cpp
@@ -0,0 +1,62 @@
+#include "error_attributes.h"
+
+namespace NYT {
+
+////////////////////////////////////////////////////////////////////////////////
+
+TErrorAttributes::TErrorAttributes(void* attributes)
+    : Attributes_(attributes)
+{ }
+
+void TErrorAttributes::Clear()
+{
+    for (const auto& key : ListKeys()) {
+        Remove(key);
+    }
+}
+
+NYson::TYsonString TErrorAttributes::GetYsonAndRemove(const TString& key)
+{
+    auto result = GetYson(key);
+    Remove(key);
+    return result;
+}
+
+bool TErrorAttributes::Contains(TStringBuf key) const
+{
+    return FindYson(key).operator bool();
+}
+
+bool operator == (const TErrorAttributes& lhs, const TErrorAttributes& rhs)
+{
+    auto lhsPairs = lhs.ListPairs();
+    auto rhsPairs = rhs.ListPairs();
+    if (lhsPairs.size() != rhsPairs.size()) {
+        return false;
+    }
+
+    std::sort(lhsPairs.begin(), lhsPairs.end(), [] (const auto& lhs, const auto& rhs) {
+        return lhs.first < rhs.first;
+    });
+    std::sort(rhsPairs.begin(), rhsPairs.end(), [] (const auto& lhs, const auto& rhs) {
+        return lhs.first < rhs.first;
+    });
+
+    for (auto index = 0; index < std::ssize(lhsPairs); ++index) {
+        if (lhsPairs[index].first != rhsPairs[index].first) {
+            return false;
+        }
+    }
+
+    for (auto index = 0; index < std::ssize(lhsPairs); ++index) {
+        if (lhsPairs[index].second != rhsPairs[index].second) {
+            return false;
+        }
+    }
+
+    return true;
+}
+
+////////////////////////////////////////////////////////////////////////////////
+
+} // namespace NYT