src/buildtool/execution_api/commmon: add message_limits library

Define the threshold for the grpc messages.

2 files changed, 29 insertions, 0 deletions

diff --git a/src/buildtool/execution_api/common/TARGETS b/src/buildtool/execution_api/common/TARGETS
index 1d0431f0..573be160 100644
--- a/src/buildtool/execution_api/common/TARGETS
+++ b/src/buildtool/execution_api/common/TARGETS
@@ -40,4 +40,11 @@
     , ["src/buildtool/execution_api/remote", "bazel"]
     ]
   }
+, "message_limits":
+  { "type": ["@", "rules", "CC", "library"]
+  , "name": ["message_limits"]
+  , "hdrs": ["message_limits.hpp"]
+  , "deps": [["@", "grpc", "", "grpc++"]]
+  , "stage": ["src", "buildtool", "execution_api", "common"]
+  }
 }
diff --git a/src/buildtool/execution_api/common/message_limits.hpp b/src/buildtool/execution_api/common/message_limits.hpp
new file mode 100644
index 00000000..47b3b8b1
--- /dev/null
+++ b/src/buildtool/execution_api/common/message_limits.hpp
@@ -0,0 +1,22 @@
+// Copyright 2023 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.
+
+#include <cstddef>
+
+#include <grpc/grpc.h>
+
+// Max size for batch transfers
+static constexpr std::size_t kMaxBatchTransferSize = 3 * 1024 * 1024;
+static_assert(kMaxBatchTransferSize < GRPC_DEFAULT_MAX_RECV_MESSAGE_LENGTH,
+              "Max batch transfer size too large.");