Revert grpc upgrade
Due to a grpc bug breaking Bazel inside docer in Bazel 3.4.0, we have to revert the upgrade of grpc 1.26.0
Revert third_party/grpc/BUILD
This partially reverts commit 2ed3980.
Revert "Upgrade gRPC to 1.26.0"
This reverts commit dfbf87c9196a15d491e9cbb81ee2d3da416cc0c2.
Closes https://github.com/bazelbuild/bazel/pull/11758
diff --git a/third_party/grpc/include/grpcpp/impl/codegen/callback_common.h b/third_party/grpc/include/grpcpp/impl/codegen/callback_common.h
new file mode 100644
index 0000000..a3c8c41
--- /dev/null
+++ b/third_party/grpc/include/grpcpp/impl/codegen/callback_common.h
@@ -0,0 +1,217 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * 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 GRPCPP_IMPL_CODEGEN_CALLBACK_COMMON_H
+#define GRPCPP_IMPL_CODEGEN_CALLBACK_COMMON_H
+
+#include <functional>
+
+#include <grpc/impl/codegen/grpc_types.h>
+#include <grpcpp/impl/codegen/call.h>
+#include <grpcpp/impl/codegen/channel_interface.h>
+#include <grpcpp/impl/codegen/config.h>
+#include <grpcpp/impl/codegen/core_codegen_interface.h>
+#include <grpcpp/impl/codegen/status.h>
+
+namespace grpc {
+namespace internal {
+
+/// An exception-safe way of invoking a user-specified callback function
+// TODO(vjpai): decide whether it is better for this to take a const lvalue
+// parameter or an rvalue parameter, or if it even matters
+template <class Func, class... Args>
+void CatchingCallback(Func&& func, Args&&... args) {
+#if GRPC_ALLOW_EXCEPTIONS
+ try {
+ func(std::forward<Args>(args)...);
+ } catch (...) {
+ // nothing to return or change here, just don't crash the library
+ }
+#else // GRPC_ALLOW_EXCEPTIONS
+ func(std::forward<Args>(args)...);
+#endif // GRPC_ALLOW_EXCEPTIONS
+}
+
+template <class ReturnType, class Func, class... Args>
+ReturnType* CatchingReactorCreator(Func&& func, Args&&... args) {
+#if GRPC_ALLOW_EXCEPTIONS
+ try {
+ return func(std::forward<Args>(args)...);
+ } catch (...) {
+ // fail the RPC, don't crash the library
+ return nullptr;
+ }
+#else // GRPC_ALLOW_EXCEPTIONS
+ return func(std::forward<Args>(args)...);
+#endif // GRPC_ALLOW_EXCEPTIONS
+}
+
+// The contract on these tags is that they are single-shot. They must be
+// constructed and then fired at exactly one point. There is no expectation
+// that they can be reused without reconstruction.
+
+class CallbackWithStatusTag
+ : public grpc_experimental_completion_queue_functor {
+ public:
+ // always allocated against a call arena, no memory free required
+ static void operator delete(void* ptr, std::size_t size) {
+ assert(size == sizeof(CallbackWithStatusTag));
+ }
+
+ // This operator should never be called as the memory should be freed as part
+ // of the arena destruction. It only exists to provide a matching operator
+ // delete to the operator new so that some compilers will not complain (see
+ // https://github.com/grpc/grpc/issues/11301) Note at the time of adding this
+ // there are no tests catching the compiler warning.
+ static void operator delete(void*, void*) { assert(0); }
+
+ CallbackWithStatusTag(grpc_call* call, std::function<void(Status)> f,
+ CompletionQueueTag* ops)
+ : call_(call), func_(std::move(f)), ops_(ops) {
+ g_core_codegen_interface->grpc_call_ref(call);
+ functor_run = &CallbackWithStatusTag::StaticRun;
+ }
+ ~CallbackWithStatusTag() {}
+ Status* status_ptr() { return &status_; }
+
+ // force_run can not be performed on a tag if operations using this tag
+ // have been sent to PerformOpsOnCall. It is intended for error conditions
+ // that are detected before the operations are internally processed.
+ void force_run(Status s) {
+ status_ = std::move(s);
+ Run(true);
+ }
+
+ private:
+ grpc_call* call_;
+ std::function<void(Status)> func_;
+ CompletionQueueTag* ops_;
+ Status status_;
+
+ static void StaticRun(grpc_experimental_completion_queue_functor* cb,
+ int ok) {
+ static_cast<CallbackWithStatusTag*>(cb)->Run(static_cast<bool>(ok));
+ }
+ void Run(bool ok) {
+ void* ignored = ops_;
+
+ if (!ops_->FinalizeResult(&ignored, &ok)) {
+ // The tag was swallowed
+ return;
+ }
+ GPR_CODEGEN_ASSERT(ignored == ops_);
+
+ // Last use of func_ or status_, so ok to move them out
+ auto func = std::move(func_);
+ auto status = std::move(status_);
+ func_ = nullptr; // reset to clear this out for sure
+ status_ = Status(); // reset to clear this out for sure
+ CatchingCallback(std::move(func), std::move(status));
+ g_core_codegen_interface->grpc_call_unref(call_);
+ }
+};
+
+/// CallbackWithSuccessTag can be reused multiple times, and will be used in
+/// this fashion for streaming operations. As a result, it shouldn't clear
+/// anything up until its destructor
+class CallbackWithSuccessTag
+ : public grpc_experimental_completion_queue_functor {
+ public:
+ // always allocated against a call arena, no memory free required
+ static void operator delete(void* ptr, std::size_t size) {
+ assert(size == sizeof(CallbackWithSuccessTag));
+ }
+
+ // This operator should never be called as the memory should be freed as part
+ // of the arena destruction. It only exists to provide a matching operator
+ // delete to the operator new so that some compilers will not complain (see
+ // https://github.com/grpc/grpc/issues/11301) Note at the time of adding this
+ // there are no tests catching the compiler warning.
+ static void operator delete(void*, void*) { assert(0); }
+
+ CallbackWithSuccessTag() : call_(nullptr) {}
+
+ CallbackWithSuccessTag(grpc_call* call, std::function<void(bool)> f,
+ CompletionQueueTag* ops) {
+ Set(call, f, ops);
+ }
+
+ CallbackWithSuccessTag(const CallbackWithSuccessTag&) = delete;
+ CallbackWithSuccessTag& operator=(const CallbackWithSuccessTag&) = delete;
+
+ ~CallbackWithSuccessTag() { Clear(); }
+
+ // Set can only be called on a default-constructed or Clear'ed tag.
+ // It should never be called on a tag that was constructed with arguments
+ // or on a tag that has been Set before unless the tag has been cleared.
+ void Set(grpc_call* call, std::function<void(bool)> f,
+ CompletionQueueTag* ops) {
+ GPR_CODEGEN_ASSERT(call_ == nullptr);
+ g_core_codegen_interface->grpc_call_ref(call);
+ call_ = call;
+ func_ = std::move(f);
+ ops_ = ops;
+ functor_run = &CallbackWithSuccessTag::StaticRun;
+ }
+
+ void Clear() {
+ if (call_ != nullptr) {
+ grpc_call* call = call_;
+ call_ = nullptr;
+ func_ = nullptr;
+ g_core_codegen_interface->grpc_call_unref(call);
+ }
+ }
+
+ CompletionQueueTag* ops() { return ops_; }
+
+ // force_run can not be performed on a tag if operations using this tag
+ // have been sent to PerformOpsOnCall. It is intended for error conditions
+ // that are detected before the operations are internally processed.
+ void force_run(bool ok) { Run(ok); }
+
+ /// check if this tag is currently set
+ operator bool() const { return call_ != nullptr; }
+
+ private:
+ grpc_call* call_;
+ std::function<void(bool)> func_;
+ CompletionQueueTag* ops_;
+
+ static void StaticRun(grpc_experimental_completion_queue_functor* cb,
+ int ok) {
+ static_cast<CallbackWithSuccessTag*>(cb)->Run(static_cast<bool>(ok));
+ }
+ void Run(bool ok) {
+ void* ignored = ops_;
+ // Allow a "false" return value from FinalizeResult to silence the
+ // callback, just as it silences a CQ tag in the async cases
+ auto* ops = ops_;
+ bool do_callback = ops_->FinalizeResult(&ignored, &ok);
+ GPR_CODEGEN_ASSERT(ignored == ops);
+
+ if (do_callback) {
+ CatchingCallback(func_, ok);
+ }
+ }
+};
+
+} // namespace internal
+} // namespace grpc
+
+#endif // GRPCPP_IMPL_CODEGEN_CALLBACK_COMMON_H
