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// -*- 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.
*/
#ifndef MGR_CLIENT_H_
#define MGR_CLIENT_H_
#include <boost/variant.hpp>
#include "msg/Connection.h"
#include "msg/Dispatcher.h"
#include "mon/MgrMap.h"
#include "mgr/DaemonHealthMetric.h"
#include "messages/MMgrReport.h"
#include "mgr/MetricTypes.h"
#include "common/perf_counters.h"
#include "common/Timer.h"
#include "common/CommandTable.h"
class MMgrMap;
class MMgrConfigure;
class MMgrClose;
class Messenger;
class MCommandReply;
class MPGStats;
class MonMap;
class MgrSessionState
{
public:
// Which performance counters have we already transmitted schema for?
std::set<std::string> declared;
// Our connection to the mgr
ConnectionRef con;
};
class MgrCommand : public CommandOp
{
public:
std::string name;
bool tell = false;
explicit MgrCommand(ceph_tid_t t) : CommandOp(t) {}
MgrCommand() : CommandOp() {}
};
class MgrClient : public Dispatcher
{
protected:
CephContext *cct;
MgrMap map;
Messenger *msgr;
MonMap *monmap;
std::unique_ptr<MgrSessionState> session;
ceph::mutex lock = ceph::make_mutex("MgrClient::lock");
ceph::condition_variable shutdown_cond;
uint32_t stats_period = 0;
uint32_t stats_threshold = 0;
SafeTimer timer;
CommandTable<MgrCommand> command_table;
using clock_t = ceph::real_clock;
clock_t::time_point last_connect_attempt;
uint64_t last_config_bl_version = 0;
Context *report_callback = nullptr;
Context *connect_retry_callback = nullptr;
// If provided, use this to compose an MPGStats to send with
// our reports (hook for use by OSD)
std::function<MPGStats*()> pgstats_cb;
std::function<void(const ConfigPayload &)> set_perf_queries_cb;
std::function<MetricPayload()> get_perf_report_cb;
// for service registration and beacon
bool service_daemon = false;
bool daemon_dirty_status = false;
bool task_dirty_status = false;
bool need_metadata_update = true;
std::string service_name, daemon_name;
std::map<std::string,std::string> daemon_metadata;
std::map<std::string,std::string> daemon_status;
std::map<std::string,std::string> task_status;
std::vector<DaemonHealthMetric> daemon_health_metrics;
void reconnect();
void _send_open();
void _send_update();
// In pre-luminous clusters, the ceph-mgr service is absent or optional,
// so we must not block in start_command waiting for it.
bool mgr_optional = false;
public:
MgrClient(CephContext *cct_, Messenger *msgr_, MonMap *monmap);
void set_messenger(Messenger *msgr_) { msgr = msgr_; }
void init();
void shutdown();
void set_mgr_optional(bool optional_) {mgr_optional = optional_;}
bool ms_dispatch2(const ceph::ref_t<Message>& m) override;
bool ms_handle_reset(Connection *con) override;
void ms_handle_remote_reset(Connection *con) override {}
bool ms_handle_refused(Connection *con) override;
bool handle_mgr_map(ceph::ref_t<MMgrMap> m);
bool handle_mgr_configure(ceph::ref_t<MMgrConfigure> m);
bool handle_mgr_close(ceph::ref_t<MMgrClose> m);
bool handle_command_reply(
uint64_t tid,
ceph::buffer::list& data,
const std::string& rs,
int r);
void set_perf_metric_query_cb(
std::function<void(const ConfigPayload &)> cb_set,
std::function<MetricPayload()> cb_get)
{
std::lock_guard l(lock);
set_perf_queries_cb = cb_set;
get_perf_report_cb = cb_get;
}
void send_pgstats();
void set_pgstats_cb(std::function<MPGStats*()>&& cb_)
{
std::lock_guard l(lock);
pgstats_cb = std::move(cb_);
}
int start_command(
const std::vector<std::string>& cmd, const ceph::buffer::list& inbl,
ceph::buffer::list *outbl, std::string *outs,
Context *onfinish);
int start_tell_command(
const std::string& name,
const std::vector<std::string>& cmd, const ceph::buffer::list& inbl,
ceph::buffer::list *outbl, std::string *outs,
Context *onfinish);
int update_daemon_metadata(
const std::string& service,
const std::string& name,
const std::map<std::string,std::string>& metadata);
int service_daemon_register(
const std::string& service,
const std::string& name,
const std::map<std::string,std::string>& metadata);
int service_daemon_update_status(
std::map<std::string,std::string>&& status);
int service_daemon_update_task_status(
std::map<std::string,std::string> &&task_status);
void update_daemon_health(std::vector<DaemonHealthMetric>&& metrics);
bool is_initialized() const { return initialized; }
private:
void handle_config_payload(const OSDConfigPayload &payload) {
if (set_perf_queries_cb) {
set_perf_queries_cb(payload);
}
}
void handle_config_payload(const MDSConfigPayload &payload) {
if (set_perf_queries_cb) {
set_perf_queries_cb(payload);
}
}
void handle_config_payload(const UnknownConfigPayload &payload) {
ceph_abort();
}
struct HandlePayloadVisitor : public boost::static_visitor<void> {
MgrClient *mgrc;
HandlePayloadVisitor(MgrClient *mgrc)
: mgrc(mgrc) {
}
template <typename ConfigPayload>
inline void operator()(const ConfigPayload &payload) const {
mgrc->handle_config_payload(payload);
}
};
void _send_stats();
void _send_pgstats();
void _send_report();
bool initialized = false;
};
#endif
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