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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) 2004-2006 Sage Weil <sage@newdream.net>
*
* 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 CEPH_LOGENTRY_H
#define CEPH_LOGENTRY_H
#include <fmt/format.h>
#include "include/utime.h"
#include "msg/msg_fmt.h"
#include "msg/msg_types.h"
#include "common/entity_name.h"
#include "ostream_temp.h"
#include "LRUSet.h"
namespace ceph {
class Formatter;
}
static const std::string CLOG_CHANNEL_NONE = "none";
static const std::string CLOG_CHANNEL_DEFAULT = "cluster";
static const std::string CLOG_CHANNEL_CLUSTER = "cluster";
static const std::string CLOG_CHANNEL_AUDIT = "audit";
// this is the key name used in the config options for the default, e.g.
// default=true foo=false bar=false
static const std::string CLOG_CONFIG_DEFAULT_KEY = "default";
/*
* Given a clog log_type, return the equivalent syslog priority
*/
int clog_type_to_syslog_level(clog_type t);
clog_type string_to_clog_type(const std::string& s);
int string_to_syslog_level(std::string s);
int string_to_syslog_facility(std::string s);
std::string clog_type_to_string(clog_type t);
struct LogEntryKey {
private:
uint64_t _hash = 0;
void _calc_hash() {
std::hash<entity_name_t> h;
_hash = seq + h(rank);
}
entity_name_t rank;
utime_t stamp;
uint64_t seq = 0;
public:
LogEntryKey() {}
LogEntryKey(const entity_name_t& w, utime_t t, uint64_t s)
: rank(w), stamp(t), seq(s) {
_calc_hash();
}
uint64_t get_hash() const {
return _hash;
}
void dump(ceph::Formatter *f) const;
static void generate_test_instances(std::list<LogEntryKey*>& o);
friend bool operator==(const LogEntryKey& l, const LogEntryKey& r) {
return l.rank == r.rank && l.stamp == r.stamp && l.seq == r.seq;
}
void encode(bufferlist& bl) const {
using ceph::encode;
encode(rank, bl);
encode(stamp, bl);
encode(seq, bl);
}
void decode(bufferlist::const_iterator &p) {
using ceph::decode;
decode(rank, p);
decode(stamp, p);
decode(seq, p);
}
};
WRITE_CLASS_ENCODER(LogEntryKey)
namespace std {
template<> struct hash<LogEntryKey> {
size_t operator()(const LogEntryKey& r) const {
return r.get_hash();
}
};
} // namespace std
struct LogEntry {
EntityName name;
entity_name_t rank;
entity_addrvec_t addrs;
utime_t stamp;
uint64_t seq;
clog_type prio;
std::string msg;
std::string channel;
LogEntry() : seq(0), prio(CLOG_DEBUG) {}
LogEntryKey key() const { return LogEntryKey(rank, stamp, seq); }
void log_to_syslog(std::string level, std::string facility) const;
void encode(ceph::buffer::list& bl, uint64_t features) const;
void decode(ceph::buffer::list::const_iterator& bl);
void dump(ceph::Formatter *f) const;
static void generate_test_instances(std::list<LogEntry*>& o);
static clog_type str_to_level(std::string const &str);
};
WRITE_CLASS_ENCODER_FEATURES(LogEntry)
struct LogSummary {
version_t version;
// ---- pre-quincy ----
// channel -> [(seq#, entry), ...]
std::map<std::string,std::list<std::pair<uint64_t,LogEntry>>> tail_by_channel;
uint64_t seq = 0;
ceph::unordered_set<LogEntryKey> keys;
// ---- quincy+ ----
LRUSet<LogEntryKey> recent_keys;
std::map<std::string, std::pair<uint64_t,uint64_t>> channel_info; // channel -> [begin, end)
LogSummary() : version(0) {}
void build_ordered_tail_legacy(std::list<LogEntry> *tail) const;
void add_legacy(const LogEntry& e) {
keys.insert(e.key());
tail_by_channel[e.channel].push_back(std::make_pair(++seq, e));
}
void prune(size_t max) {
for (auto& i : tail_by_channel) {
while (i.second.size() > max) {
keys.erase(i.second.front().second.key());
i.second.pop_front();
}
}
recent_keys.prune(max);
}
bool contains(const LogEntryKey& k) const {
return keys.count(k) || recent_keys.contains(k);
}
void encode(ceph::buffer::list& bl, uint64_t features) const;
void decode(ceph::buffer::list::const_iterator& bl);
void dump(ceph::Formatter *f) const;
static void generate_test_instances(std::list<LogSummary*>& o);
};
WRITE_CLASS_ENCODER_FEATURES(LogSummary)
inline std::ostream& operator<<(std::ostream& out, const clog_type t)
{
switch (t) {
case CLOG_DEBUG:
return out << "[DBG]";
case CLOG_INFO:
return out << "[INF]";
case CLOG_SEC:
return out << "[SEC]";
case CLOG_WARN:
return out << "[WRN]";
case CLOG_ERROR:
return out << "[ERR]";
default:
return out << "[???]";
}
}
inline std::ostream& operator<<(std::ostream& out, const LogEntry& e)
{
return out << e.stamp << " " << e.name << " (" << e.rank << ") "
<< e.seq << " : "
<< e.channel << " " << e.prio << " " << e.msg;
}
template <> struct fmt::formatter<EntityName> : fmt::formatter<std::string_view> {
template <typename FormatContext>
auto format(const EntityName& e, FormatContext& ctx) {
return formatter<std::string_view>::format(e.to_str(), ctx);
}
};
template <> struct fmt::formatter<LogEntry> : fmt::formatter<std::string_view> {
template <typename FormatContext>
auto format(const LogEntry& e, FormatContext& ctx) {
return fmt::format_to(ctx.out(), "{} {} ({}) {} : {} {} {}",
e.stamp, e.name, e.rank, e.seq, e.channel, e.prio, e.msg);
}
};
#endif
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