mon: have 'mon stat' output json as well

Fixes: https://tracker.ceph.com/issues/46816
Signed-off-by: Joao Eduardo Luis <joao@suse.com>
(cherry picked from commit c148a3cde5c256576d0a67a40321e543fdf891bf)

diff --git a/src/mon/MonmapMonitor.cc b/src/mon/MonmapMonitor.cc
index 9f52d5e6f7c95700a15decb2e0c37f73205cb037..7e8b965fb5328f4b57611f334cd29b4b03c6347a 100644 (file)
--- a/src/mon/MonmapMonitor.cc
+++ b/src/mon/MonmapMonitor.cc
@@ -278,10 +278,29 @@ bool MonmapMonitor::preprocess_command(MonOpRequestRef op)
   boost::scoped_ptr<Formatter> f(Formatter::create(format));
 
   if (prefix == "mon stat") {
-    mon->monmap->print_summary(ss);
-    ss << ", election epoch " << mon->get_epoch() << ", leader "
-       << mon->get_leader() << " " << mon->get_leader_name()
-       << ", quorum " << mon->get_quorum() << " " << mon->get_quorum_names();
+    if (f) {
+      f->open_object_section("monmap");
+      mon->monmap->dump_summary(f.get());
+      f->dump_string("leader", mon->get_leader_name());
+      f->open_array_section("quorum");
+      for (auto rank: mon->get_quorum()) {
+        std::string name = mon->monmap->get_name(rank);
+        f->open_object_section("mon");
+        f->dump_int("rank", rank);
+        f->dump_string("name", name);
+        f->close_section();  // mon
+      }
+      f->close_section();  // quorum
+      f->close_section();  // monmap
+      f->flush(ss);
+    } else {
+      mon->monmap->print_summary(ss);
+      ss << ", election epoch " << mon->get_epoch() << ", leader "
+         << mon->get_leader() << " " << mon->get_leader_name()
+         << ", quorum " << mon->get_quorum()
+         << " " << mon->get_quorum_names();
+    }
+
     rdata.append(ss);
     ss.str("");
     r = 0;