From 483eb2f56657e8e7f419ab1a4fab8dce9ade8609 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Sat, 27 Apr 2024 20:24:20 +0200
Subject: Adding upstream version 14.2.21.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 src/mgr/DaemonHealthMetricCollector.cc | 125 +++++++++++++++++++++++++++++++++
 1 file changed, 125 insertions(+)
 create mode 100644 src/mgr/DaemonHealthMetricCollector.cc

(limited to 'src/mgr/DaemonHealthMetricCollector.cc')

diff --git a/src/mgr/DaemonHealthMetricCollector.cc b/src/mgr/DaemonHealthMetricCollector.cc
new file mode 100644
index 00000000..1c3dc431
--- /dev/null
+++ b/src/mgr/DaemonHealthMetricCollector.cc
@@ -0,0 +1,125 @@
+#include <boost/format.hpp>
+
+#include "include/health.h"
+#include "include/types.h"
+#include "DaemonHealthMetricCollector.h"
+
+
+
+ostream& operator<<(ostream& os,
+                    const DaemonHealthMetricCollector::DaemonKey& daemon) {
+  return os << daemon.first << "." << daemon.second;
+}
+
+// define operator<<(ostream&, const vector<DaemonKey>&) after
+// ostream& operator<<(ostream&, const DaemonKey&), so that C++'s
+// ADL can use the former instead of using the generic one:
+// operator<<(ostream&, const std::pair<A,B>&)
+ostream& operator<<(
+   ostream& os,
+   const vector<DaemonHealthMetricCollector::DaemonKey>& daemons)
+{
+  os << "[";
+  for (auto d = daemons.begin(); d != daemons.end(); ++d) {
+    if (d != daemons.begin()) os << ",";
+    os << *d;
+  }
+  os << "]";
+  return os;
+}
+
+namespace {
+
+class SlowOps final : public DaemonHealthMetricCollector {
+  bool _is_relevant(daemon_metric type) const override {
+    return type == daemon_metric::SLOW_OPS;
+  }
+  health_check_t& _get_check(health_check_map_t& cm) const override {
+    return cm.get_or_add("SLOW_OPS", HEALTH_WARN, "");
+  }
+  bool _update(const DaemonKey& daemon,
+               const DaemonHealthMetric& metric) override {
+    auto num_slow = metric.get_n1();
+    auto blocked_time = metric.get_n2();
+    value.n1 += num_slow;
+    value.n2 = std::max(value.n2, blocked_time);
+    if (num_slow || blocked_time) {
+      daemons.push_back(daemon);
+      return true;
+    } else {
+      return false;
+    }
+  }
+  void _summarize(health_check_t& check) const override {
+    if (daemons.empty()) {
+      return;
+    }
+    static const char* fmt = "%1% slow ops, oldest one blocked for %2% sec, %3%";
+    // Note this message format is used in mgr/prometheus, so any change in format
+    // requires a corresponding change in the mgr/prometheus module.
+    ostringstream ss;
+    if (daemons.size() > 1) {
+      if (daemons.size() > 10) {
+        ss << "daemons " << vector<DaemonKey>(daemons.begin(), daemons.begin()+10)
+           << "..." << " have slow ops.";
+      } else {
+        ss << "daemons " << daemons << " have slow ops.";
+      }
+    } else {
+      ss << daemons.front() << " has slow ops";
+    }
+    check.summary = boost::str(boost::format(fmt) % value.n1 % value.n2 % ss.str());
+    // No detail
+  }
+  vector<DaemonKey> daemons;
+};
+
+
+class PendingPGs final : public DaemonHealthMetricCollector {
+  bool _is_relevant(daemon_metric type) const override {
+    return type == daemon_metric::PENDING_CREATING_PGS;
+  }
+  health_check_t& _get_check(health_check_map_t& cm) const override {
+    return cm.get_or_add("PENDING_CREATING_PGS", HEALTH_WARN, "");
+  }
+  bool _update(const DaemonKey& osd,
+               const DaemonHealthMetric& metric) override {
+    value.n += metric.get_n();
+    if (metric.get_n()) {
+      osds.push_back(osd);
+      return true;
+    } else {
+      return false;
+    }
+  }
+  void _summarize(health_check_t& check) const override {
+    if (osds.empty()) {
+      return;
+    }
+    static const char* fmt = "%1% PGs pending on creation";
+    check.summary = boost::str(boost::format(fmt) % value.n);
+    ostringstream ss;
+    if (osds.size() > 1) {
+      ss << "osds " << osds << " have pending PGs.";
+    } else {
+      ss << osds.front() << " has pending PGs";
+    }
+    check.detail.push_back(ss.str());
+  }
+  vector<DaemonKey> osds;
+};
+
+} // anonymous namespace
+
+unique_ptr<DaemonHealthMetricCollector>
+DaemonHealthMetricCollector::create(daemon_metric m)
+{
+  switch (m) {
+  case daemon_metric::SLOW_OPS:
+    return unique_ptr<DaemonHealthMetricCollector>{new SlowOps};
+  case daemon_metric::PENDING_CREATING_PGS:
+    return unique_ptr<DaemonHealthMetricCollector>{new PendingPGs};
+  default:
+    return unique_ptr<DaemonHealthMetricCollector>{};
+  }
+}
-- 
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