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diff --git a/src/ceph/src/rgw/rgw_log.h b/src/ceph/src/rgw/rgw_log.h
new file mode 100644
index 0000000..25e99e0
--- /dev/null
+++ b/src/ceph/src/rgw/rgw_log.h
@@ -0,0 +1,144 @@
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+
+#ifndef CEPH_RGW_LOG_H
+#define CEPH_RGW_LOG_H
+#include <boost/container/flat_map.hpp>
+#include "rgw_common.h"
+#include "include/utime.h"
+#include "common/Formatter.h"
+#include "common/OutputDataSocket.h"
+
+class RGWRados;
+
+struct rgw_log_entry {
+
+  using headers_map = boost::container::flat_map<std::string, std::string>;
+
+  rgw_user object_owner;
+  rgw_user bucket_owner;
+  string bucket;
+  utime_t time;
+  string remote_addr;
+  string user;
+  rgw_obj_key obj;
+  string op;
+  string uri;
+  string http_status;
+  string error_code;
+  uint64_t bytes_sent;
+  uint64_t bytes_received;
+  uint64_t obj_size;
+  utime_t total_time;
+  string user_agent;
+  string referrer;
+  string bucket_id;
+  headers_map x_headers;
+
+  void encode(bufferlist &bl) const {
+    ENCODE_START(9, 5, bl);
+    ::encode(object_owner.id, bl);
+    ::encode(bucket_owner.id, bl);
+    ::encode(bucket, bl);
+    ::encode(time, bl);
+    ::encode(remote_addr, bl);
+    ::encode(user, bl);
+    ::encode(obj.name, bl);
+    ::encode(op, bl);
+    ::encode(uri, bl);
+    ::encode(http_status, bl);
+    ::encode(error_code, bl);
+    ::encode(bytes_sent, bl);
+    ::encode(obj_size, bl);
+    ::encode(total_time, bl);
+    ::encode(user_agent, bl);
+    ::encode(referrer, bl);
+    ::encode(bytes_received, bl);
+    ::encode(bucket_id, bl);
+    ::encode(obj, bl);
+    ::encode(object_owner, bl);
+    ::encode(bucket_owner, bl);
+    ::encode(x_headers, bl);
+    ENCODE_FINISH(bl);
+  }
+  void decode(bufferlist::iterator &p) {
+    DECODE_START_LEGACY_COMPAT_LEN(8, 5, 5, p);
+    ::decode(object_owner.id, p);
+    if (struct_v > 3)
+      ::decode(bucket_owner.id, p);
+    ::decode(bucket, p);
+    ::decode(time, p);
+    ::decode(remote_addr, p);
+    ::decode(user, p);
+    ::decode(obj.name, p);
+    ::decode(op, p);
+    ::decode(uri, p);
+    ::decode(http_status, p);
+    ::decode(error_code, p);
+    ::decode(bytes_sent, p);
+    ::decode(obj_size, p);
+    ::decode(total_time, p);
+    ::decode(user_agent, p);
+    ::decode(referrer, p);
+    if (struct_v >= 2)
+      ::decode(bytes_received, p);
+    else
+      bytes_received = 0;
+
+    if (struct_v >= 3) {
+      if (struct_v <= 5) {
+        uint64_t id;
+        ::decode(id, p);
+        char buf[32];
+        snprintf(buf, sizeof(buf), "%llu", (long long)id);
+        bucket_id = buf;
+      } else {
+        ::decode(bucket_id, p);
+      }
+    } else {
+      bucket_id = "";
+    }
+    if (struct_v >= 7) {
+      ::decode(obj, p);
+    }
+    if (struct_v >= 8) {
+      ::decode(object_owner, p);
+      ::decode(bucket_owner, p);
+    }
+    if (struct_v >= 9) {
+      ::decode(x_headers, p);
+    }
+    DECODE_FINISH(p);
+  }
+  void dump(Formatter *f) const;
+  static void generate_test_instances(list<rgw_log_entry*>& o);
+};
+WRITE_CLASS_ENCODER(rgw_log_entry)
+
+class OpsLogSocket : public OutputDataSocket {
+  Formatter *formatter;
+  Mutex lock;
+
+  void formatter_to_bl(bufferlist& bl);
+
+protected:
+  void init_connection(bufferlist& bl) override;
+
+public:
+  OpsLogSocket(CephContext *cct, uint64_t _backlog);
+  ~OpsLogSocket() override;
+
+  void log(struct rgw_log_entry& entry);
+};
+
+class RGWREST;
+
+int rgw_log_op(RGWRados *store, RGWREST* const rest, struct req_state *s,
+	       const string& op_name, OpsLogSocket *olog);
+void rgw_log_usage_init(CephContext *cct, RGWRados *store);
+void rgw_log_usage_finalize();
+void rgw_format_ops_log_entry(struct rgw_log_entry& entry,
+			      Formatter *formatter);
+
+#endif /* CEPH_RGW_LOG_H */
+