1 files changed, 117 insertions, 0 deletions
diff --git a/src/buildtool/storage/uplinker.cpp b/src/buildtool/storage/uplinker.cpp
new file mode 100644
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--- /dev/null
+++ b/src/buildtool/storage/uplinker.cpp
@@ -0,0 +1,117 @@
+// Copyright 2024 Huawei Cloud Computing Technology Co., Ltd.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#ifndef BOOTSTRAP_BUILD_TOOL
+
+#include "src/buildtool/storage/uplinker.hpp"
+
+#include <algorithm>
+#include <cstddef>
+
+#include "src/buildtool/common/bazel_types.hpp"
+#include "src/buildtool/file_system/object_type.hpp"
+#include "src/buildtool/storage/local_ac.hpp"
+#include "src/buildtool/storage/local_cas.hpp"
+#include "src/buildtool/storage/storage.hpp"
+#include "src/buildtool/storage/target_cache.hpp"
+#include "src/buildtool/storage/target_cache_entry.hpp"
+
+namespace {
+[[nodiscard]] auto CreateGenerations(
+    gsl::not_null<StorageConfig const*> const& storage_config) noexcept
+    -> std::vector<Generation> {
+    std::vector<Generation> generations;
+    generations.reserve(storage_config->NumGenerations());
+    for (std::size_t i = 0; i < storage_config->NumGenerations(); ++i) {
+        auto const gen_config = storage_config->CreateGenerationConfig(i);
+        generations.emplace_back(gen_config);
+    }
+    return generations;
+}
+}  // namespace
+
+GlobalUplinker::GlobalUplinker(
+    gsl::not_null<StorageConfig const*> const& storage_config) noexcept
+    : storage_config_{*storage_config},
+      generations_{CreateGenerations(&storage_config_)} {}
+
+auto GlobalUplinker::UplinkBlob(bazel_re::Digest const& digest,
+                                bool is_executable) const noexcept -> bool {
+    // Try to find blob in all generations.
+    auto const& latest = generations_[Generation::kYoungest].CAS();
+    return std::any_of(
+        generations_.begin(),
+        generations_.end(),
+        [&latest, &digest, is_executable](Generation const& generation) {
+            return generation.CAS().LocalUplinkBlob(latest,
+                                                    digest,
+                                                    is_executable,
+                                                    /*skip_sync=*/true,
+                                                    /*splice_result=*/true);
+        });
+}
+
+auto GlobalUplinker::UplinkTree(bazel_re::Digest const& digest) const noexcept
+    -> bool {
+    // Try to find blob in all generations.
+    auto const& latest = generations_[Generation::kYoungest].CAS();
+    return std::any_of(generations_.begin(),
+                       generations_.end(),
+                       [&latest, &digest](Generation const& generation) {
+                           return generation.CAS().LocalUplinkTree(
+                               latest, digest, /*splice_result=*/true);
+                       });
+}
+
+auto GlobalUplinker::UplinkLargeBlob(
+    bazel_re::Digest const& digest) const noexcept -> bool {
+    // Try to find large entry in all generations.
+    auto const& latest = generations_[Generation::kYoungest].CAS();
+    return std::any_of(
+        generations_.begin(),
+        generations_.end(),
+        [&latest, &digest](Generation const& generation) {
+            return generation.CAS().LocalUplinkLargeObject<ObjectType::File>(
+                latest, digest);
+        });
+}
+
+auto GlobalUplinker::UplinkActionCacheEntry(
+    bazel_re::Digest const& action_id) const noexcept -> bool {
+    // Try to find action-cache entry in all generations.
+    auto const& latest = generations_[Generation::kYoungest].ActionCache();
+    return std::any_of(generations_.begin(),
+                       generations_.end(),
+                       [&latest, &action_id](Generation const& generation) {
+                           return generation.ActionCache().LocalUplinkEntry(
+                               latest, action_id);
+                       });
+}
+
+auto GlobalUplinker::UplinkTargetCacheEntry(
+    TargetCacheKey const& key,
+    std::optional<std::string> const& shard) const noexcept -> bool {
+    // Try to find target-cache entry in all generations.
+    auto const& latest =
+        generations_[Generation::kYoungest].TargetCache().WithShard(shard);
+    return std::any_of(
+        generations_.begin(),
+        generations_.end(),
+        [&latest, &key, &shard](Generation const& generation) {
+            return generation.TargetCache().WithShard(shard).LocalUplinkEntry(
+                latest, key);
+        });
+}
+
+#endif  // BOOTSTRAP_BUILD_TOOL