1 files changed, 86 insertions, 0 deletions
diff --git a/src/rgw/rgw_flight_frontend.h b/src/rgw/rgw_flight_frontend.h
new file mode 100644
index 000000000..dfc470a3b
--- /dev/null
+++ b/src/rgw/rgw_flight_frontend.h
@@ -0,0 +1,86 @@
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab ft=cpp
+
+/*
+ * Ceph - scalable distributed file system
+ *
+ * Copyright 2023 IBM
+ *
+ * See file COPYING for licensing information.
+ */
+
+#pragma once
+
+#include "include/common_fwd.h"
+#include "common/Thread.h"
+#include "rgw_frontend.h"
+#include "rgw_op.h"
+
+#include "arrow/status.h"
+
+
+namespace rgw::flight {
+
+using FlightKey = uint32_t;
+extern const FlightKey null_flight_key;
+
+class FlightServer;
+
+class FlightFrontend : public RGWFrontend {
+
+  static constexpr std::string_view server_thread_name =
+    "Arrow Flight Server thread";
+
+  RGWProcessEnv& env;
+  std::thread flight_thread;
+  RGWFrontendConfig* config;
+  int port;
+
+  const DoutPrefix dp;
+
+public:
+
+  // port <= 0 means let server decide; typically 8077
+  FlightFrontend(RGWProcessEnv& env,
+		 RGWFrontendConfig* config,
+		 int port = -1);
+  ~FlightFrontend() override;
+  int init() override;
+  int run() override;
+  void stop() override;
+  void join() override;
+
+  void pause_for_new_config() override;
+  void unpause_with_new_config() override;
+}; // class FlightFrontend
+
+class FlightGetObj_Filter : public RGWGetObj_Filter {
+
+  const RGWProcessEnv& penv;
+  const DoutPrefix dp;
+  FlightKey key;
+  uint64_t current_offset;
+  uint64_t expected_size;
+  std::string uri;
+  std::string tenant_name;
+  std::string bucket_name;
+  rgw_obj_key object_key;
+  std::string temp_file_name;
+  std::ofstream temp_file;
+  arrow::Status schema_status;
+  rgw_user user_id; // TODO: this should be removed when we do
+  // proper flight authentication
+
+public:
+
+  FlightGetObj_Filter(const req_state* request, RGWGetObj_Filter* next);
+  ~FlightGetObj_Filter();
+
+  int handle_data(bufferlist& bl, off_t bl_ofs, off_t bl_len) override;
+#if 0
+  // this would allow the range to be modified if necessary;
+  int fixup_range(off_t& ofs, off_t& end) override;
+#endif
+};
+
+} // namespace rgw::flight