| /* |
| * |
| * Copyright 2016, Google Inc. |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are |
| * met: |
| * |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * Redistributions in binary form must reproduce the above |
| * copyright notice, this list of conditions and the following disclaimer |
| * in the documentation and/or other materials provided with the |
| * distribution. |
| * * Neither the name of Google Inc. nor the names of its |
| * contributors may be used to endorse or promote products derived from |
| * this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| * |
| */ |
| |
| #include <string.h> |
| |
| #include "src/core/lib/channel/channel_stack.h" |
| #include "src/cpp/common/channel_filter.h" |
| |
| #include <grpc++/impl/codegen/slice.h> |
| |
| namespace grpc { |
| |
| // MetadataBatch |
| |
| grpc_linked_mdelem *MetadataBatch::AddMetadata(grpc_exec_ctx *exec_ctx, |
| const string &key, |
| const string &value) { |
| grpc_linked_mdelem *storage = new grpc_linked_mdelem; |
| memset(storage, 0, sizeof(grpc_linked_mdelem)); |
| storage->md = grpc_mdelem_from_slices(exec_ctx, SliceFromCopiedString(key), |
| SliceFromCopiedString(value)); |
| GRPC_LOG_IF_ERROR("MetadataBatch::AddMetadata", |
| grpc_metadata_batch_link_head(exec_ctx, batch_, storage)); |
| return storage; |
| } |
| |
| // ChannelData |
| |
| void ChannelData::StartTransportOp(grpc_exec_ctx *exec_ctx, |
| grpc_channel_element *elem, |
| TransportOp *op) { |
| grpc_channel_next_op(exec_ctx, elem, op->op()); |
| } |
| |
| void ChannelData::GetInfo(grpc_exec_ctx *exec_ctx, grpc_channel_element *elem, |
| const grpc_channel_info *channel_info) { |
| grpc_channel_next_get_info(exec_ctx, elem, channel_info); |
| } |
| |
| // CallData |
| |
| void CallData::StartTransportStreamOp(grpc_exec_ctx *exec_ctx, |
| grpc_call_element *elem, |
| TransportStreamOp *op) { |
| grpc_call_next_op(exec_ctx, elem, op->op()); |
| } |
| |
| void CallData::SetPollsetOrPollsetSet(grpc_exec_ctx *exec_ctx, |
| grpc_call_element *elem, |
| grpc_polling_entity *pollent) { |
| grpc_call_stack_ignore_set_pollset_or_pollset_set(exec_ctx, elem, pollent); |
| } |
| |
| char *CallData::GetPeer(grpc_exec_ctx *exec_ctx, grpc_call_element *elem) { |
| return grpc_call_next_get_peer(exec_ctx, elem); |
| } |
| |
| // internal code used by RegisterChannelFilter() |
| |
| namespace internal { |
| |
| // Note: Implicitly initialized to nullptr due to static lifetime. |
| std::vector<FilterRecord> *channel_filters; |
| |
| namespace { |
| |
| bool MaybeAddFilter(grpc_exec_ctx *exec_ctx, |
| grpc_channel_stack_builder *builder, void *arg) { |
| const FilterRecord &filter = *(FilterRecord *)arg; |
| if (filter.include_filter) { |
| const grpc_channel_args *args = |
| grpc_channel_stack_builder_get_channel_arguments(builder); |
| if (!filter.include_filter(*args)) return true; |
| } |
| return grpc_channel_stack_builder_prepend_filter(builder, &filter.filter, |
| nullptr, nullptr); |
| } |
| |
| } // namespace |
| |
| void ChannelFilterPluginInit() { |
| for (size_t i = 0; i < channel_filters->size(); ++i) { |
| FilterRecord &filter = (*channel_filters)[i]; |
| grpc_channel_init_register_stage(filter.stack_type, filter.priority, |
| MaybeAddFilter, (void *)&filter); |
| } |
| } |
| |
| void ChannelFilterPluginShutdown() {} |
| |
| } // namespace internal |
| |
| } // namespace grpc |