107 lines
3.4 KiB
C++
107 lines
3.4 KiB
C++
// Copyright 2020 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "cast/streaming/rpc_messenger.h"
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#include <memory>
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#include <string>
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#include <utility>
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#include "util/osp_logging.h"
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namespace openscreen {
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namespace cast {
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namespace {
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std::ostream& operator<<(std::ostream& out, const RpcMessage& message) {
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out << "handle=" << message.handle() << ", proc=" << message.proc();
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switch (message.rpc_oneof_case()) {
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case RpcMessage::kIntegerValue:
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return out << ", integer_value=" << message.integer_value();
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case RpcMessage::kInteger64Value:
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return out << ", integer64_value=" << message.integer64_value();
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case RpcMessage::kDoubleValue:
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return out << ", double_value=" << message.double_value();
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case RpcMessage::kBooleanValue:
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return out << ", boolean_value=" << message.boolean_value();
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case RpcMessage::kStringValue:
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return out << ", string_value=" << message.string_value();
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default:
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return out << ", rpc_oneof=" << message.rpc_oneof_case();
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}
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OSP_NOTREACHED();
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}
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} // namespace
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constexpr RpcMessenger::Handle RpcMessenger::kInvalidHandle;
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constexpr RpcMessenger::Handle RpcMessenger::kAcquireRendererHandle;
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constexpr RpcMessenger::Handle RpcMessenger::kAcquireDemuxerHandle;
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constexpr RpcMessenger::Handle RpcMessenger::kFirstHandle;
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RpcMessenger::RpcMessenger(SendMessageCallback send_message_cb)
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: next_handle_(kFirstHandle),
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send_message_cb_(std::move(send_message_cb)) {}
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RpcMessenger::~RpcMessenger() {
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receive_callbacks_.clear();
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}
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RpcMessenger::Handle RpcMessenger::GetUniqueHandle() {
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return next_handle_++;
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}
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void RpcMessenger::RegisterMessageReceiverCallback(
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RpcMessenger::Handle handle,
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ReceiveMessageCallback callback) {
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OSP_DCHECK(receive_callbacks_.find(handle) == receive_callbacks_.end())
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<< "must deregister before re-registering";
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receive_callbacks_.emplace_back(handle, std::move(callback));
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}
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void RpcMessenger::UnregisterMessageReceiverCallback(RpcMessenger::Handle handle) {
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receive_callbacks_.erase_key(handle);
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}
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void RpcMessenger::ProcessMessageFromRemote(const uint8_t* message,
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std::size_t message_len) {
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auto rpc = std::make_unique<RpcMessage>();
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if (!rpc->ParseFromArray(message, message_len)) {
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OSP_DLOG_WARN << "Failed to parse RPC message from remote: \"" << message
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<< "\"";
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return;
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}
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ProcessMessageFromRemote(std::move(rpc));
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}
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void RpcMessenger::ProcessMessageFromRemote(std::unique_ptr<RpcMessage> message) {
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const auto entry = receive_callbacks_.find(message->handle());
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if (entry == receive_callbacks_.end()) {
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OSP_VLOG << "Dropping message due to unregistered handle: "
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<< message->handle();
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return;
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}
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entry->second(std::move(message));
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}
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void RpcMessenger::SendMessageToRemote(const RpcMessage& rpc) {
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OSP_VLOG << "Sending RPC message: " << rpc;
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std::vector<uint8_t> message(rpc.ByteSizeLong());
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rpc.SerializeToArray(message.data(), message.size());
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send_message_cb_(std::move(message));
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}
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bool RpcMessenger::IsRegisteredForTesting(RpcMessenger::Handle handle) {
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return receive_callbacks_.find(handle) != receive_callbacks_.end();
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}
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WeakPtr<RpcMessenger> RpcMessenger::GetWeakPtr() {
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return weak_factory_.GetWeakPtr();
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}
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} // namespace cast
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} // namespace openscreen
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