From aec896bd0484372b0768256dca98b7518f88a027 Mon Sep 17 00:00:00 2001
From: Sage Weil <sage@redhat.com>
Date: Fri, 14 Jul 2017 16:55:11 -0400
Subject: [PATCH] mon/OSDMonitor: 'osd crush rule ls' plaintext output

More suitable for scripting.

Signed-off-by: Sage Weil <sage@redhat.com>
---
 src/crush/CrushWrapper.cc |  9 +++++++++
 src/crush/CrushWrapper.h  |  1 +
 src/mon/OSDMonitor.cc     | 20 ++++++++++----------
 3 files changed, 20 insertions(+), 10 deletions(-)

diff --git a/src/crush/CrushWrapper.cc b/src/crush/CrushWrapper.cc
index 2a7b7832b7d..ad57dae1a5e 100644
--- a/src/crush/CrushWrapper.cc
+++ b/src/crush/CrushWrapper.cc
@@ -2569,6 +2569,15 @@ void CrushWrapper::list_rules(Formatter *f) const
   }
 }
 
+void CrushWrapper::list_rules(ostream *ss) const
+{
+  for (int rule = 0; rule < get_max_rules(); rule++) {
+    if (!rule_exists(rule))
+      continue;
+    *ss << get_rule_name(rule) << "\n";
+  }
+}
+
 class CrushTreePlainDumper : public CrushTreeDumper::Dumper<TextTable> {
 public:
   typedef CrushTreeDumper::Dumper<TextTable> Parent;
diff --git a/src/crush/CrushWrapper.h b/src/crush/CrushWrapper.h
index cd3d1f58f16..251357335fb 100644
--- a/src/crush/CrushWrapper.h
+++ b/src/crush/CrushWrapper.h
@@ -1479,6 +1479,7 @@ public:
   void dump_tunables(Formatter *f) const;
   void dump_choose_args(Formatter *f) const;
   void list_rules(Formatter *f) const;
+  void list_rules(ostream *ss) const;
   void dump_tree(ostream *out, Formatter *f,
 		 const CrushTreeDumper::name_map_t& ws) const;
   void dump_tree(ostream *out, Formatter *f) {
diff --git a/src/mon/OSDMonitor.cc b/src/mon/OSDMonitor.cc
index bd0acbed962..1bd6c949119 100644
--- a/src/mon/OSDMonitor.cc
+++ b/src/mon/OSDMonitor.cc
@@ -5023,16 +5023,16 @@ bool OSDMonitor::preprocess_command(MonOpRequestRef op)
     r = 0;
   } else if (prefix == "osd crush rule list" ||
 	     prefix == "osd crush rule ls") {
-    string format;
-    cmd_getval(g_ceph_context, cmdmap, "format", format);
-    boost::scoped_ptr<Formatter> f(Formatter::create(format, "json-pretty", "json-pretty"));
-    f->open_array_section("rules");
-    osdmap.crush->list_rules(f.get());
-    f->close_section();
-    ostringstream rs;
-    f->flush(rs);
-    rs << "\n";
-    rdata.append(rs.str());
+    if (f) {
+      f->open_array_section("rules");
+      osdmap.crush->list_rules(f.get());
+      f->close_section();
+      f->flush(rdata);
+    } else {
+      ostringstream ss;
+      osdmap.crush->list_rules(&ss);
+      rdata.append(ss.str());
+    }
   } else if (prefix == "osd crush rule dump") {
     string name;
     cmd_getval(g_ceph_context, cmdmap, "name", name);
-- 
2.39.5