Adding upstream version 18.2.2.upstream/18.2.2

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 667 insertions, 0 deletions

diff --git a/src/mgr/MgrClient.cc b/src/mgr/MgrClient.cc
new file mode 100644
index 000000000..6250ea3b9
--- /dev/null
+++ b/src/mgr/MgrClient.cc
@@ -0,0 +1,667 @@
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+/*
+ * Ceph - scalable distributed file system
+ *
+ * Copyright (C) 2016 John Spray <john.spray@redhat.com>
+ *
+ * This is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License version 2.1, as published by the Free Software
+ * Foundation.  See file COPYING.
+ */
+
+
+#include "MgrClient.h"
+
+#include "common/perf_counters_key.h"
+#include "mgr/MgrContext.h"
+#include "mon/MonMap.h"
+
+#include "msg/Messenger.h"
+#include "messages/MMgrMap.h"
+#include "messages/MMgrReport.h"
+#include "messages/MMgrOpen.h"
+#include "messages/MMgrUpdate.h"
+#include "messages/MMgrClose.h"
+#include "messages/MMgrConfigure.h"
+#include "messages/MCommand.h"
+#include "messages/MCommandReply.h"
+#include "messages/MMgrCommand.h"
+#include "messages/MMgrCommandReply.h"
+#include "messages/MPGStats.h"
+
+using std::string;
+using std::vector;
+
+using ceph::bufferlist;
+using ceph::make_message;
+using ceph::ref_cast;
+using ceph::ref_t;
+
+#define dout_subsys ceph_subsys_mgrc
+#undef dout_prefix
+#define dout_prefix *_dout << "mgrc " << __func__ << " "
+
+MgrClient::MgrClient(CephContext *cct_, Messenger *msgr_, MonMap *monmap_)
+  : Dispatcher(cct_),
+    cct(cct_),
+    msgr(msgr_),
+    monmap(monmap_),
+    timer(cct_, lock)
+{
+  ceph_assert(cct != nullptr);
+}
+
+void MgrClient::init()
+{
+  std::lock_guard l(lock);
+
+  ceph_assert(msgr != nullptr);
+
+  timer.init();
+  initialized = true;
+}
+
+void MgrClient::shutdown()
+{
+  std::unique_lock l(lock);
+  ldout(cct, 10) << dendl;
+
+  if (connect_retry_callback) {
+    timer.cancel_event(connect_retry_callback);
+    connect_retry_callback = nullptr;
+  }
+
+  // forget about in-flight commands if we are prematurely shut down
+  // (e.g., by control-C)
+  command_table.clear();
+  if (service_daemon &&
+      session &&
+      session->con &&
+      HAVE_FEATURE(session->con->get_features(), SERVER_MIMIC)) {
+    ldout(cct, 10) << "closing mgr session" << dendl;
+    auto m = make_message<MMgrClose>();
+    m->daemon_name = daemon_name;
+    m->service_name = service_name;
+    session->con->send_message2(m);
+    auto timeout = ceph::make_timespan(cct->_conf.get_val<double>(
+			      "mgr_client_service_daemon_unregister_timeout"));
+    shutdown_cond.wait_for(l, timeout);
+  }
+
+  timer.shutdown();
+  if (session) {
+    session->con->mark_down();
+    session.reset();
+  }
+}
+
+bool MgrClient::ms_dispatch2(const ref_t<Message>& m)
+{
+  std::lock_guard l(lock);
+
+  switch(m->get_type()) {
+  case MSG_MGR_MAP:
+    return handle_mgr_map(ref_cast<MMgrMap>(m));
+  case MSG_MGR_CONFIGURE:
+    return handle_mgr_configure(ref_cast<MMgrConfigure>(m));
+  case MSG_MGR_CLOSE:
+    return handle_mgr_close(ref_cast<MMgrClose>(m));
+  case MSG_COMMAND_REPLY:
+    if (m->get_source().type() == CEPH_ENTITY_TYPE_MGR) {
+      MCommandReply *c = static_cast<MCommandReply*>(m.get());
+      handle_command_reply(c->get_tid(), c->get_data(), c->rs, c->r);
+      return true;
+    } else {
+      return false;
+    }
+  case MSG_MGR_COMMAND_REPLY:
+    if (m->get_source().type() == CEPH_ENTITY_TYPE_MGR) {
+      MMgrCommandReply *c = static_cast<MMgrCommandReply*>(m.get());
+      handle_command_reply(c->get_tid(), c->get_data(), c->rs, c->r);
+      return true;
+    } else {
+      return false;
+    }
+  default:
+    ldout(cct, 30) << "Not handling " << *m << dendl; 
+    return false;
+  }
+}
+
+void MgrClient::reconnect()
+{
+  ceph_assert(ceph_mutex_is_locked_by_me(lock));
+
+  if (session) {
+    ldout(cct, 4) << "Terminating session with "
+		  << session->con->get_peer_addr() << dendl;
+    session->con->mark_down();
+    session.reset();
+    stats_period = 0;
+    if (report_callback != nullptr) {
+      timer.cancel_event(report_callback);
+      report_callback = nullptr;
+    }
+  }
+
+  if (!map.get_available()) {
+    ldout(cct, 4) << "No active mgr available yet" << dendl;
+    return;
+  }
+
+  if (!clock_t::is_zero(last_connect_attempt)) {
+    auto now = clock_t::now();
+    auto when = last_connect_attempt +
+      ceph::make_timespan(
+        cct->_conf.get_val<double>("mgr_connect_retry_interval"));
+    if (now < when) {
+      if (!connect_retry_callback) {
+	connect_retry_callback = timer.add_event_at(
+	  when,
+	  new LambdaContext([this](int r){
+	      connect_retry_callback = nullptr;
+	      reconnect();
+	    }));
+      }
+      ldout(cct, 4) << "waiting to retry connect until " << when << dendl;
+      return;
+    }
+  }
+
+  if (connect_retry_callback) {
+    timer.cancel_event(connect_retry_callback);
+    connect_retry_callback = nullptr;
+  }
+
+  ldout(cct, 4) << "Starting new session with " << map.get_active_addrs()
+		<< dendl;
+  last_connect_attempt = clock_t::now();
+
+  session.reset(new MgrSessionState());
+  session->con = msgr->connect_to(CEPH_ENTITY_TYPE_MGR,
+				  map.get_active_addrs());
+
+  if (service_daemon) {
+    daemon_dirty_status = true;
+  }
+  task_dirty_status = true;
+
+  // Don't send an open if we're just a client (i.e. doing
+  // command-sending, not stats etc)
+  if (msgr->get_mytype() != CEPH_ENTITY_TYPE_CLIENT || service_daemon) {
+    _send_open();
+  }
+
+  // resend any pending commands
+  auto p = command_table.get_commands().begin();
+  while (p != command_table.get_commands().end()) {
+    auto tid = p->first;
+    auto& op = p->second;
+    ldout(cct,10) << "resending " << tid << (op.tell ? " (tell)":" (cli)") << dendl;
+    MessageRef m;
+    if (op.tell) {
+      if (op.name.size() && op.name != map.active_name) {
+	ldout(cct, 10) << "active mgr " << map.active_name << " != target "
+		       << op.name << dendl;
+	if (op.on_finish) {
+	  op.on_finish->complete(-ENXIO);
+	}
+	++p;
+	command_table.erase(tid);
+	continue;
+      }
+      // Set fsid argument to signal that this is really a tell message (and
+      // we are not a legacy client sending a non-tell command via MCommand).
+      m = op.get_message(monmap->fsid, false);
+    } else {
+      m = op.get_message(
+	{},
+	HAVE_FEATURE(map.active_mgr_features, SERVER_OCTOPUS));
+    }
+    ceph_assert(session);
+    ceph_assert(session->con);
+    session->con->send_message2(std::move(m));
+    ++p;
+  }
+}
+
+void MgrClient::_send_open()
+{
+  if (session && session->con) {
+    auto open = make_message<MMgrOpen>();
+    if (!service_name.empty()) {
+      open->service_name = service_name;
+      open->daemon_name = daemon_name;
+    } else {
+      open->daemon_name = cct->_conf->name.get_id();
+    }
+    if (service_daemon) {
+      open->service_daemon = service_daemon;
+      open->daemon_metadata = daemon_metadata;
+    }
+    cct->_conf.get_config_bl(0, &open->config_bl, &last_config_bl_version);
+    cct->_conf.get_defaults_bl(&open->config_defaults_bl);
+    session->con->send_message2(open);
+  }
+}
+
+void MgrClient::_send_update()
+{
+  if (session && session->con) {
+    auto update = make_message<MMgrUpdate>();
+    if (!service_name.empty()) {
+      update->service_name = service_name;
+      update->daemon_name = daemon_name;
+    } else {
+      update->daemon_name = cct->_conf->name.get_id();
+    }
+    if (need_metadata_update) {
+      update->daemon_metadata = daemon_metadata;
+    }
+    update->need_metadata_update = need_metadata_update;
+    session->con->send_message2(update);
+  }
+}
+
+bool MgrClient::handle_mgr_map(ref_t<MMgrMap> m)
+{
+  ceph_assert(ceph_mutex_is_locked_by_me(lock));
+
+  ldout(cct, 20) << *m << dendl;
+
+  map = m->get_map();
+  ldout(cct, 4) << "Got map version " << map.epoch << dendl;
+
+  ldout(cct, 4) << "Active mgr is now " << map.get_active_addrs() << dendl;
+
+  // Reset session?
+  if (!session ||
+      session->con->get_peer_addrs() != map.get_active_addrs()) {
+    reconnect();
+  }
+
+  return true;
+}
+
+bool MgrClient::ms_handle_reset(Connection *con)
+{
+  std::lock_guard l(lock);
+  if (session && con == session->con) {
+    ldout(cct, 4) << __func__ << " con " << con << dendl;
+    reconnect();
+    return true;
+  }
+  return false;
+}
+
+bool MgrClient::ms_handle_refused(Connection *con)
+{
+  // do nothing for now
+  return false;
+}
+
+void MgrClient::_send_stats()
+{
+  _send_report();
+  _send_pgstats();
+  if (stats_period != 0) {
+    report_callback = timer.add_event_after(
+      stats_period,
+      new LambdaContext([this](int) {
+	  _send_stats();
+	}));
+  }
+}
+
+void MgrClient::_send_report()
+{
+  ceph_assert(ceph_mutex_is_locked_by_me(lock));
+  ceph_assert(session);
+  report_callback = nullptr;
+
+  auto report = make_message<MMgrReport>();
+  auto pcc = cct->get_perfcounters_collection();
+
+  pcc->with_counters([this, report](
+        const PerfCountersCollectionImpl::CounterMap &by_path)
+  {
+    // Helper for checking whether a counter should be included
+    auto include_counter = [this](
+        const PerfCounters::perf_counter_data_any_d &ctr,
+        const PerfCounters &perf_counters)
+    {
+      // FIXME: We don't send labeled perf counters to the mgr currently.
+      auto labels = ceph::perf_counters::key_labels(perf_counters.get_name());
+      if (labels.begin() != labels.end()) {
+        return false;
+      }
+
+      return perf_counters.get_adjusted_priority(ctr.prio) >= (int)stats_threshold;
+    };
+
+    // Helper for cases where we want to forget a counter
+    auto undeclare = [report, this](const std::string &path)
+    {
+      report->undeclare_types.push_back(path);
+      ldout(cct,20) << " undeclare " << path << dendl;
+      session->declared.erase(path);
+    };
+
+    ENCODE_START(1, 1, report->packed);
+
+    // Find counters that no longer exist, and undeclare them
+    for (auto p = session->declared.begin(); p != session->declared.end(); ) {
+      const auto &path = *(p++);
+      if (by_path.count(path) == 0) {
+        undeclare(path);
+      }
+    }
+
+    for (const auto &i : by_path) {
+      auto& path = i.first;
+      auto& data = *(i.second.data);
+      auto& perf_counters = *(i.second.perf_counters);
+
+      // Find counters that still exist, but are no longer permitted by
+      // stats_threshold
+      if (!include_counter(data, perf_counters)) {
+        if (session->declared.count(path)) {
+          undeclare(path);
+        }
+        continue;
+      }
+
+      if (session->declared.count(path) == 0) {
+        ldout(cct, 20) << " declare " << path << dendl;
+        PerfCounterType type;
+        type.path = path;
+        if (data.description) {
+          type.description = data.description;
+        }
+        if (data.nick) {
+          type.nick = data.nick;
+        }
+        type.type = data.type;
+        type.priority = perf_counters.get_adjusted_priority(data.prio);
+        type.unit = data.unit;
+        report->declare_types.push_back(std::move(type));
+        session->declared.insert(path);
+      }
+
+      encode(static_cast<uint64_t>(data.u64), report->packed);
+      if (data.type & PERFCOUNTER_LONGRUNAVG) {
+        encode(static_cast<uint64_t>(data.avgcount), report->packed);
+        encode(static_cast<uint64_t>(data.avgcount2), report->packed);
+      }
+    }
+    ENCODE_FINISH(report->packed);
+
+    ldout(cct, 20) << "sending " << session->declared.size() << " counters ("
+                      "of possible " << by_path.size() << "), "
+		   << report->declare_types.size() << " new, "
+                   << report->undeclare_types.size() << " removed"
+                   << dendl;
+  });
+
+  ldout(cct, 20) << "encoded " << report->packed.length() << " bytes" << dendl;
+
+  if (daemon_name.size()) {
+    report->daemon_name = daemon_name;
+  } else {
+    report->daemon_name = cct->_conf->name.get_id();
+  }
+  report->service_name = service_name;
+
+  if (daemon_dirty_status) {
+    report->daemon_status = daemon_status;
+    daemon_dirty_status = false;
+  }
+
+  if (task_dirty_status) {
+    report->task_status = task_status;
+    task_dirty_status = false;
+  }
+
+  report->daemon_health_metrics = std::move(daemon_health_metrics);
+
+  cct->_conf.get_config_bl(last_config_bl_version, &report->config_bl,
+			    &last_config_bl_version);
+
+  if (get_perf_report_cb) {
+    report->metric_report_message = MetricReportMessage(get_perf_report_cb());
+  }
+
+  session->con->send_message2(report);
+}
+
+void MgrClient::send_pgstats()
+{
+  std::lock_guard l(lock);
+  _send_pgstats();
+}
+
+void MgrClient::_send_pgstats()
+{
+  if (pgstats_cb && session) {
+    session->con->send_message(pgstats_cb());
+  }
+}
+
+bool MgrClient::handle_mgr_configure(ref_t<MMgrConfigure> m)
+{
+  ceph_assert(ceph_mutex_is_locked_by_me(lock));
+
+  ldout(cct, 20) << *m << dendl;
+
+  if (!session) {
+    lderr(cct) << "dropping unexpected configure message" << dendl;
+    return true;
+  }
+
+  ldout(cct, 4) << "stats_period=" << m->stats_period << dendl;
+
+  if (stats_threshold != m->stats_threshold) {
+    ldout(cct, 4) << "updated stats threshold: " << m->stats_threshold << dendl;
+    stats_threshold = m->stats_threshold;
+  }
+
+  if (!m->osd_perf_metric_queries.empty()) {
+    handle_config_payload(m->osd_perf_metric_queries);
+  } else if (m->metric_config_message) {
+    const MetricConfigMessage &message = *m->metric_config_message;
+    boost::apply_visitor(HandlePayloadVisitor(this), message.payload);
+  }
+
+  bool starting = (stats_period == 0) && (m->stats_period != 0);
+  stats_period = m->stats_period;
+  if (starting) {
+    _send_stats();
+  }
+
+  return true;
+}
+
+bool MgrClient::handle_mgr_close(ref_t<MMgrClose> m)
+{
+  service_daemon = false;
+  shutdown_cond.notify_all();
+  return true;
+}
+
+int MgrClient::start_command(const vector<string>& cmd, const bufferlist& inbl,
+			     bufferlist *outbl, string *outs,
+			     Context *onfinish)
+{
+  std::lock_guard l(lock);
+
+  ldout(cct, 20) << "cmd: " << cmd << dendl;
+
+  if (map.epoch == 0 && mgr_optional) {
+    ldout(cct,20) << " no MgrMap, assuming EACCES" << dendl;
+    return -EACCES;
+  }
+
+  auto &op = command_table.start_command();
+  op.cmd = cmd;
+  op.inbl = inbl;
+  op.outbl = outbl;
+  op.outs = outs;
+  op.on_finish = onfinish;
+
+  if (session && session->con) {
+    // Leaving fsid argument null because it isn't used historically, and
+    // we can use it as a signal that we are sending a non-tell command.
+    auto m = op.get_message(
+      {},
+      HAVE_FEATURE(map.active_mgr_features, SERVER_OCTOPUS));
+    session->con->send_message2(std::move(m));
+  } else {
+    ldout(cct, 5) << "no mgr session (no running mgr daemon?), waiting" << dendl;
+  }
+  return 0;
+}
+
+int MgrClient::start_tell_command(
+  const string& name,
+  const vector<string>& cmd, const bufferlist& inbl,
+  bufferlist *outbl, string *outs,
+  Context *onfinish)
+{
+  std::lock_guard l(lock);
+
+  ldout(cct, 20) << "target: " << name << " cmd: " << cmd << dendl;
+
+  if (map.epoch == 0 && mgr_optional) {
+    ldout(cct,20) << " no MgrMap, assuming EACCES" << dendl;
+    return -EACCES;
+  }
+
+  auto &op = command_table.start_command();
+  op.tell = true;
+  op.name = name;
+  op.cmd = cmd;
+  op.inbl = inbl;
+  op.outbl = outbl;
+  op.outs = outs;
+  op.on_finish = onfinish;
+
+  if (session && session->con && (name.size() == 0 || map.active_name == name)) {
+    // Set fsid argument to signal that this is really a tell message (and
+    // we are not a legacy client sending a non-tell command via MCommand).
+    auto m = op.get_message(monmap->fsid, false);
+    session->con->send_message2(std::move(m));
+  } else {
+    ldout(cct, 5) << "no mgr session (no running mgr daemon?), or "
+		  << name << " not active mgr, waiting" << dendl;
+  }
+  return 0;
+}
+
+bool MgrClient::handle_command_reply(
+  uint64_t tid,
+  bufferlist& data,
+  const std::string& rs,
+  int r)
+{
+  ceph_assert(ceph_mutex_is_locked_by_me(lock));
+
+  ldout(cct, 20) << "tid " << tid << " r " << r << dendl;
+
+  if (!command_table.exists(tid)) {
+    ldout(cct, 4) << "handle_command_reply tid " << tid
+            << " not found" << dendl;
+    return true;
+  }
+
+  auto &op = command_table.get_command(tid);
+  if (op.outbl) {
+    *op.outbl = std::move(data);
+  }
+
+  if (op.outs) {
+    *(op.outs) = rs;
+  }
+
+  if (op.on_finish) {
+    op.on_finish->complete(r);
+  }
+
+  command_table.erase(tid);
+  return true;
+}
+
+int MgrClient::update_daemon_metadata(
+  const std::string& service,
+  const std::string& name,
+  const std::map<std::string,std::string>& metadata)
+{
+  std::lock_guard l(lock);
+  if (service_daemon) {
+    return -EEXIST;
+  }
+  ldout(cct,1) << service << "." << name << " metadata " << metadata << dendl;
+  service_name = service;
+  daemon_name = name;
+  daemon_metadata = metadata;
+  daemon_dirty_status = true;
+
+  if (need_metadata_update &&
+      !daemon_metadata.empty()) {
+    _send_update();
+    need_metadata_update = false;
+  }
+
+  return 0;
+}
+
+int MgrClient::service_daemon_register(
+  const std::string& service,
+  const std::string& name,
+  const std::map<std::string,std::string>& metadata)
+{
+  std::lock_guard l(lock);
+  if (service_daemon) {
+    return -EEXIST;
+  }
+  ldout(cct,1) << service << "." << name << " metadata " << metadata << dendl;
+  service_daemon = true;
+  service_name = service;
+  daemon_name = name;
+  daemon_metadata = metadata;
+  daemon_dirty_status = true;
+
+  // late register?
+  if (msgr->get_mytype() == CEPH_ENTITY_TYPE_CLIENT && session && session->con) {
+    _send_open();
+  }
+
+  return 0;
+}
+
+int MgrClient::service_daemon_update_status(
+  std::map<std::string,std::string>&& status)
+{
+  std::lock_guard l(lock);
+  ldout(cct,10) << status << dendl;
+  daemon_status = std::move(status);
+  daemon_dirty_status = true;
+  return 0;
+}
+
+int MgrClient::service_daemon_update_task_status(
+  std::map<std::string,std::string> &&status) {
+  std::lock_guard l(lock);
+  ldout(cct,10) << status << dendl;
+  task_status = std::move(status);
+  task_dirty_status = true;
+  return 0;
+}
+
+void MgrClient::update_daemon_health(std::vector<DaemonHealthMetric>&& metrics)
+{
+  std::lock_guard l(lock);
+  daemon_health_metrics = std::move(metrics);
+}
+