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#include "yql_yt_native_folders.h"
#include <yt/cpp/mapreduce/interface/error_codes.h>
#include <yql/essentials/utils/log/log.h>
#include <yql/essentials/providers/common/proto/gateways_config.pb.h>
#include <yt/yql/providers/yt/gateway/lib/yt_helpers.h>
namespace NYql::NNative {
using namespace NYT;
using namespace NCommon;
using namespace NKikimr;
using namespace NKikimr::NMiniKQL;
using namespace NNodes;
using namespace NThreading;
TString GetTypeFromAttributes(const NYT::TNode& attributes, bool getDocumentType) {
if (!attributes.HasKey("type")) {
return "unknown";
}
const auto type = attributes["type"].AsString();
if (getDocumentType && "document" == type) {
if (!attributes.HasKey("_yql_type")) {
return "unknown";
}
return attributes["_yql_type"].AsString();
} else {
return type;
}
}
TString GetTypeFromNode(const NYT::TNode& node, bool getDocumentType) {
if (!node.HasAttributes()) {
return "unknown";
}
return GetTypeFromAttributes(node.GetAttributes(), getDocumentType);
}
TMaybe<TVector<IYtGateway::TBatchFolderResult::TFolderItem>> MaybeGetFolderFromCache(TTransactionCache::TEntry::TPtr entry, TStringBuf cacheKey) {
TVector<IYtGateway::TBatchFolderResult::TFolderItem> items;
with_lock(entry->Lock_) {
const auto listPtr = entry->FolderCache.FindPtr(cacheKey);
if (listPtr) {
YQL_CLOG(INFO, ProviderYt) << "Found folder in cache with key ('" << cacheKey << "') with " << listPtr->size() << " items";
for (auto& el : *listPtr) {
IYtGateway::TBatchFolderResult::TFolderItem item;
std::tie(item.Type, item.Path, item.Attributes) = el;
items.emplace_back(std::move(item));
}
return items;
}
}
return {};
}
TMaybe<TFileLinkPtr> MaybeGetFilePtrFromCache(TTransactionCache::TEntry::TPtr entry, const IYtGateway::TBatchFolderOptions::TFolderPrefixAttrs& folder) {
const auto cacheKey = std::accumulate(folder.AttrKeys.begin(), folder.AttrKeys.end(), folder.Prefix,
[] (TString&& str, const TString& arg) {
return str + "&" + arg;
});
with_lock(entry->Lock_) {
const auto filePtr = entry->FolderFilePtrCache.FindPtr(cacheKey);
if (filePtr) {
return filePtr->Get();
}
}
return {};
}
TAttributeFilter MakeAttrFilter(const TSet<TString>& attributes, bool isResolvingLink) {
NYT::TAttributeFilter filter;
for (const auto& attr : attributes) {
filter.AddAttribute(attr);
}
if (!isResolvingLink) {
filter.AddAttribute("target_path");
filter.AddAttribute("broken");
}
filter.AddAttribute("type");
return filter;
}
IYtGateway::TBatchFolderResult::TFolderItem MakeFolderItem(const NYT::TNode& node, const TString& path) {
IYtGateway::TBatchFolderResult::TFolderItem item;
item.Attributes = NYT::TNode::CreateMap();
for (const auto& attr: node.GetAttributes().AsMap()) {
if (attr.first == "type") {
continue;
}
item.Attributes[attr.first] = attr.second;
}
item.Type = GetTypeFromNode(node, false);
item.Path = path.StartsWith(NYT::TConfig::Get()->Prefix)
? path.substr(NYT::TConfig::Get()->Prefix.size())
: path;
return item;
}
const TTransactionCache::TEntry::TFolderCache::value_type& StoreResInCache(const TTransactionCache::TEntry::TPtr& entry, TVector<IYtGateway::TBatchFolderResult::TFolderItem>&& items, const TString& cacheKey) {
std::vector<std::tuple<TString, TString, NYT::TNode>> cache;
for (const auto& item : items) {
cache.emplace_back(std::move(item.Type), std::move(item.Path), std::move(item.Attributes));
}
with_lock(entry->Lock_) {
const auto [it, _] = entry->FolderCache.insert_or_assign(cacheKey, std::move(cache));
return *it;
}
}
TFileLinkPtr SaveItemsToTempFile(const TExecContext<IYtGateway::TBatchFolderOptions>::TPtr& execCtx, const TVector<IYtGateway::TFolderResult::TFolderItem>& folderItems) {
const TString file = execCtx->FileStorage_->GetTemp() / GetGuidAsString(execCtx->Session_->RandomProvider_->GenGuid());
YQL_CLOG(INFO, ProviderYt) << "Folder limit exceeded. Writing items to file " << file;
auto out = MakeHolder<TOFStream>(file);
for (auto& item: folderItems) {
::SaveMany(out.Get(), item.Type, item.Path, item.Attributes);
}
::SaveSize(out.Get(), 0);
out.Destroy();
return CreateFakeFileLink(file, "", true);
}
IYtGateway::TBatchFolderResult ExecResolveLinks(const TExecContext<IYtGateway::TResolveOptions>::TPtr& execCtx) {
try {
auto batchGet = execCtx->GetEntry()->Tx->CreateBatchRequest();
TVector<TFuture<IYtGateway::TBatchFolderResult::TFolderItem>> batchRes;
for (const auto& [item, reqAttributes]: execCtx->Options_.Items()) {
if (item.Type != "link") {
batchRes.push_back(MakeFuture<IYtGateway::TBatchFolderResult::TFolderItem>(std::move(item)));
continue;
}
if (item.Attributes["broken"].AsBool()) {
continue;
}
const auto& targetPath = item.Attributes["target_path"].AsString();
const auto& path = item.Path;
const auto attrFilter = MakeAttrFilter(reqAttributes, /* isResolvingLink */ true);
batchRes.push_back(
batchGet->Get(targetPath, TGetOptions().AttributeFilter(attrFilter))
.Apply([path, pos = execCtx->Options_.Pos()] (const auto& f) {
try {
const auto linkNode = f.GetValue();
return MakeFolderItem(linkNode, path);
} catch (const NYT::TErrorResponse& e) {
return MakeFolderItem(NYT::TNode::CreateMap(), path);
}
})
);
}
IYtGateway::TBatchFolderResult res;
res.SetSuccess();
if (batchRes.empty()) {
YQL_CLOG(INFO, ProviderYt) << "Batch get result is empty";
return res;
}
res.Items.reserve(batchRes.size());
batchGet->ExecuteBatch();
WaitAll(batchRes).Wait();
for (auto& f : batchRes) {
res.Items.push_back(f.ExtractValue());
}
return res;
}
catch (...) {
return ResultFromCurrentException<IYtGateway::TBatchFolderResult>(execCtx->Options_.Pos());
}
}
IYtGateway::TBatchFolderResult ExecGetFolder(const TExecContext<IYtGateway::TBatchFolderOptions>::TPtr& execCtx) {
const auto entry = execCtx->GetOrCreateEntry();
auto batchList = entry->Tx->CreateBatchRequest();
TVector<TFuture<TVector<IYtGateway::TBatchFolderResult::TFolderItem>>> batchRes;
IYtGateway::TBatchFolderResult folderResult;
folderResult.SetSuccess();
for (const auto& folder : execCtx->Options_.Folders()) {
const auto cacheKey = std::accumulate(folder.AttrKeys.begin(), folder.AttrKeys.end(), folder.Prefix,
[] (TString&& str, const TString& arg) {
return str + "&" + arg;
});
YQL_CLOG(INFO, ProviderYt) << "Executing list command with prefix: " << folder.Prefix << " , cacheKey = " << cacheKey;
auto maybeCached = MaybeGetFolderFromCache(entry, cacheKey);
if (maybeCached) {
batchRes.push_back(MakeFuture<TVector<IYtGateway::TBatchFolderResult::TFolderItem>>(std::move(*maybeCached)));
continue;
}
const auto attrFilter = MakeAttrFilter(folder.AttrKeys, /* isResolvingLink */ false);
batchRes.push_back(
batchList->List(folder.Prefix, TListOptions().AttributeFilter(attrFilter))
.Apply([&folder, cacheKey = std::move(cacheKey), &entry] (const TFuture<NYT::TNode::TListType>& f)
-> TFuture<TVector<IYtGateway::TBatchFolderResult::TFolderItem>> {
TVector<IYtGateway::TBatchFolderResult::TFolderItem> folderItems;
try {
auto nodeList = f.GetValue();
folderItems.reserve(nodeList.size());
for (const auto& node : nodeList) {
TStringBuilder path;
if (!folder.Prefix.empty()) {
path << folder.Prefix << "/";
}
path << node.AsString();
folderItems.push_back(MakeFolderItem(node, path));
}
StoreResInCache(entry, std::move(folderItems), cacheKey);
return MakeFuture(std::move(folderItems));
}
catch (const NYT::TErrorResponse& e) {
if (e.GetError().ContainsErrorCode(NYT::NClusterErrorCodes::NYTree::ResolveError)) {
// Return empty list on missing path
YQL_CLOG(INFO, ProviderYt) << "Storing empty folder in cache with key ('" << cacheKey << "')";
StoreResInCache(entry, {}, cacheKey);
return MakeFuture<TVector<IYtGateway::TBatchFolderResult::TFolderItem>>({});
}
return MakeErrorFuture<TVector<IYtGateway::TBatchFolderResult::TFolderItem>>(std::current_exception());
}
catch (...) {
return MakeErrorFuture<TVector<IYtGateway::TBatchFolderResult::TFolderItem>>(std::current_exception());
}
})
);
}
TExecuteBatchOptions batchOptions;
if (batchRes.size() > 1) {
const size_t concurrency = execCtx->Options_.Config()->BatchListFolderConcurrency
.Get().GetOrElse(DEFAULT_BATCH_LIST_FOLDER_CONCURRENCY);
batchOptions.Concurrency(concurrency);
}
try {
batchList->ExecuteBatch(batchOptions);
WaitExceptionOrAll(batchRes).Wait();
for (auto& res : batchRes) {
const auto items = res.ExtractValue();
folderResult.Items.reserve(folderResult.Items.size() + items.size());
for (const auto& item : items) {
folderResult.Items.push_back(std::move(item));
}
}
}
catch (...) {
return ResultFromCurrentException<IYtGateway::TBatchFolderResult>(execCtx->Options_.Pos());
}
return folderResult;
}
} // NYql::NNative
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