execution service: implement WaitExecution and google::longrunning::Operations::GetOperation

For each action that is executed, an entry is added to a shared thread
safe cache. Once the number of operations stored exceeds twice 2^n,
where n is given by the option --log-operations-threshold, at most 2^n
operations will be removed, in a FIFO scheme.

1 files changed, 63 insertions, 0 deletions

diff --git a/src/buildtool/execution_api/execution_service/operations_server.cpp b/src/buildtool/execution_api/execution_service/operations_server.cpp
new file mode 100644
index 00000000..37d3552a
--- /dev/null
+++ b/src/buildtool/execution_api/execution_service/operations_server.cpp
@@ -0,0 +1,63 @@
+// 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 "src/buildtool/execution_api/execution_service/operations_server.hpp"
+
+#include "src/buildtool/execution_api/execution_service/operation_cache.hpp"
+
+auto OperarationsServiceImpl::GetOperation(
+    ::grpc::ServerContext* /*context*/,
+    const ::google::longrunning::GetOperationRequest* request,
+    ::google::longrunning::Operation* response) -> ::grpc::Status {
+    auto const& hash = request->name();
+    logger_.Emit(LogLevel::Trace, "GetOperation: {}", hash);
+    std::optional<::google::longrunning::Operation> op;
+    op = OperationCache::Query(hash);
+    if (!op) {
+        auto const& str = fmt::format(
+            "Executing action {} not found in internal cache.", hash);
+        logger_.Emit(LogLevel::Error, str);
+        return ::grpc::Status{grpc::StatusCode::INTERNAL, str};
+    }
+    response->CopyFrom(*op);
+    return ::grpc::Status::OK;
+}
+
+auto OperarationsServiceImpl::ListOperations(
+    ::grpc::ServerContext* /*context*/,
+    const ::google::longrunning::ListOperationsRequest* /*request*/,
+    ::google::longrunning::ListOperationsResponse* /*response*/)
+    -> ::grpc::Status {
+    auto const* str = "ListOperations not implemented";
+    logger_.Emit(LogLevel::Error, str);
+    return ::grpc::Status{grpc::StatusCode::UNIMPLEMENTED, str};
+}
+
+auto OperarationsServiceImpl::DeleteOperation(
+    ::grpc::ServerContext* /*context*/,
+    const ::google::longrunning::DeleteOperationRequest* /*request*/,
+    ::google::protobuf::Empty* /*response*/) -> ::grpc::Status {
+    auto const* str = "DeleteOperation not implemented";
+    logger_.Emit(LogLevel::Error, str);
+    return ::grpc::Status{grpc::StatusCode::UNIMPLEMENTED, str};
+}
+
+auto OperarationsServiceImpl::CancelOperation(
+    ::grpc::ServerContext* /*context*/,
+    const ::google::longrunning::CancelOperationRequest* /*request*/,
+    ::google::protobuf::Empty* /*response*/) -> ::grpc::Status {
+    auto const* str = "CancelOperation not implemented";
+    logger_.Emit(LogLevel::Error, str);
+    return ::grpc::Status{grpc::StatusCode::UNIMPLEMENTED, str};
+}