1 files changed, 93 insertions, 0 deletions
diff --git a/src/common/zipkin_trace.h b/src/common/zipkin_trace.h
new file mode 100644
index 000000000..5a960610d
--- /dev/null
+++ b/src/common/zipkin_trace.h
@@ -0,0 +1,93 @@
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+#ifndef COMMON_ZIPKIN_TRACE_H
+#define COMMON_ZIPKIN_TRACE_H
+
+#include "acconfig.h"
+#include "include/encoding.h"
+
+#ifdef WITH_BLKIN
+
+#include <ztracer.hpp>
+
+#else // !WITH_BLKIN
+
+// add stubs for noop Trace and Endpoint
+
+// match the "real" struct
+struct blkin_trace_info {
+    int64_t trace_id;
+    int64_t span_id;
+    int64_t parent_span_id;
+};
+
+namespace ZTracer
+{
+static inline int ztrace_init() { return 0; }
+
+class Endpoint {
+ public:
+  Endpoint(const char *name) {}
+  Endpoint(const char *ip, int port, const char *name) {}
+
+  void copy_ip(const std::string &newip) {}
+  void copy_name(const std::string &newname) {}
+  void copy_address_from(const Endpoint *endpoint) {}
+  void share_address_from(const Endpoint *endpoint) {}
+  void set_port(int p) {}
+};
+
+class Trace {
+ public:
+  Trace() {}
+  Trace(const char *name, const Endpoint *ep, const Trace *parent = NULL) {}
+  Trace(const char *name, const Endpoint *ep,
+        const blkin_trace_info *i, bool child=false) {}
+
+  bool valid() const { return false; }
+  operator bool() const { return false; }
+
+  int init(const char *name, const Endpoint *ep, const Trace *parent = NULL) {
+    return 0;
+  }
+  int init(const char *name, const Endpoint *ep,
+           const blkin_trace_info *i, bool child=false) {
+    return 0;
+  }
+
+  void copy_name(const std::string &newname) {}
+
+  const blkin_trace_info* get_info() const { return NULL; }
+  void set_info(const blkin_trace_info *i) {}
+
+  void keyval(const char *key, const char *val) const {}
+  void keyval(const char *key, int64_t val) const {}
+  void keyval(const char *key, const char *val, const Endpoint *ep) const {}
+  void keyval(const char *key, int64_t val, const Endpoint *ep) const {}
+
+  void event(const char *event) const {}
+  void event(const char *event, const Endpoint *ep) const {}
+};
+} // namespace ZTrace
+
+#endif // !WITH_BLKIN
+
+static inline void encode(const blkin_trace_info& b, ceph::buffer::list& bl)
+{
+  using ceph::encode;
+  encode(b.trace_id, bl);
+  encode(b.span_id, bl);
+  encode(b.parent_span_id, bl);
+}
+
+static inline void decode(blkin_trace_info& b, ceph::buffer::list::const_iterator& p)
+{
+  using ceph::decode;
+  decode(b.trace_id, p);
+  decode(b.span_id, p);
+  decode(b.parent_span_id, p);
+}
+
+
+
+#endif // COMMON_ZIPKIN_TRACE_H