1 files changed, 64 insertions, 0 deletions
diff --git a/src/crimson/common/formatter.cc b/src/crimson/common/formatter.cc
new file mode 100644
index 000000000..677216224
--- /dev/null
+++ b/src/crimson/common/formatter.cc
@@ -0,0 +1,64 @@
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+
+#include "formatter.h"
+
+#include <fmt/format.h>
+#if FMT_VERSION >= 60000
+#include <fmt/chrono.h>
+#else
+#include <fmt/time.h>
+#endif
+
+
+template <>
+struct fmt::formatter<seastar::lowres_system_clock::time_point> {
+  // ignore the format string
+  template <typename ParseContext>
+  constexpr auto parse(ParseContext &ctx) { return ctx.begin(); }
+
+  template <typename FormatContext>
+  auto format(const seastar::lowres_system_clock::time_point& t,
+              FormatContext& ctx) {
+    std::time_t tt = std::chrono::duration_cast<std::chrono::seconds>(
+      t.time_since_epoch()).count();
+    auto milliseconds = (t.time_since_epoch() %
+                         std::chrono::seconds(1)).count();
+    return fmt::format_to(ctx.out(), "{:%Y-%m-%d %H:%M:%S} {:03d}",
+                          fmt::localtime(tt), milliseconds);
+  }
+};
+
+template <>
+struct fmt::formatter<ceph::coarse_real_clock::time_point> {
+  // ignore the format string
+  template <typename ParseContext>
+  constexpr auto parse(ParseContext &ctx) { return ctx.begin(); }
+
+  template <typename FormatContext>
+  auto format(const ceph::coarse_real_clock::time_point& t,
+              FormatContext& ctx) {
+    std::time_t tt = std::chrono::duration_cast<std::chrono::seconds>(
+      t.time_since_epoch()).count();
+    auto milliseconds = (t.time_since_epoch() %
+                         std::chrono::seconds(1)).count();
+    return fmt::format_to(ctx.out(), "{:%Y-%m-%d %H:%M:%S} {:03d}",
+                          fmt::localtime(tt), milliseconds);
+  }
+};
+
+namespace std {
+
+ostream& operator<<(ostream& out,
+                    const seastar::lowres_system_clock::time_point& t)
+{
+  return out << fmt::format("{}", t);
+}
+
+ostream& operator<<(ostream& out,
+                    const ceph::coarse_real_clock::time_point& t)
+{
+  return out << fmt::format("{}", t);
+}
+
+}