public:

explicit IoAgent(

std::shared_ptr<NetworkResourceManager> network_resource_manager)

: network_resource_manager_(std::move(network_resource_manager)) {}

void Wire(UberDispatcher* dispatcher);

DispatchResponse read(const String& in_handle,

std::optional<int> in_offset,

std::optional<int> in_size,

String* out_data,

bool* out_eof) override;

DispatchResponse close(const String& in_handle) override;

private:

std::shared_ptr<IO::Frontend> frontend_;

std::unordered_map<std::string, int> offset_map_ =

{}; // Maps stream_id to offset

std::shared_ptr<NetworkResourceManager> network_resource_manager_;