summaryrefslogtreecommitdiffstats
path: root/src/common/LogClient.cc
blob: 982bbe35b49e98c65dfb5d0660566cc58400fcb0 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
// -*- 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.
 * 
 */

#include "common/LogClient.h"
#include "include/str_map.h"
#include "messages/MLog.h"
#include "messages/MLogAck.h"
#include "msg/Messenger.h"
#include "mon/MonMap.h"
#include "common/Graylog.h"

#define dout_subsys ceph_subsys_monc

int parse_log_client_options(CephContext *cct,
			     map<string,string> &log_to_monitors,
			     map<string,string> &log_to_syslog,
			     map<string,string> &log_channels,
			     map<string,string> &log_prios,
			     map<string,string> &log_to_graylog,
			     map<string,string> &log_to_graylog_host,
			     map<string,string> &log_to_graylog_port,
			     uuid_d &fsid,
			     string &host)
{
  ostringstream oss;

  int r = get_conf_str_map_helper(
    cct->_conf.get_val<string>("clog_to_monitors"), oss,
    &log_to_monitors, CLOG_CONFIG_DEFAULT_KEY);
  if (r < 0) {
    lderr(cct) << __func__ << " error parsing 'clog_to_monitors'" << dendl;
    return r;
  }

  r = get_conf_str_map_helper(
    cct->_conf.get_val<string>("clog_to_syslog"), oss,
                              &log_to_syslog, CLOG_CONFIG_DEFAULT_KEY);
  if (r < 0) {
    lderr(cct) << __func__ << " error parsing 'clog_to_syslog'" << dendl;
    return r;
  }

  r = get_conf_str_map_helper(
    cct->_conf.get_val<string>("clog_to_syslog_facility"), oss,
    &log_channels, CLOG_CONFIG_DEFAULT_KEY);
  if (r < 0) {
    lderr(cct) << __func__ << " error parsing 'clog_to_syslog_facility'" << dendl;
    return r;
  }

  r = get_conf_str_map_helper(
    cct->_conf.get_val<string>("clog_to_syslog_level"), oss,
    &log_prios, CLOG_CONFIG_DEFAULT_KEY);
  if (r < 0) {
    lderr(cct) << __func__ << " error parsing 'clog_to_syslog_level'" << dendl;
    return r;
  }

  r = get_conf_str_map_helper(
    cct->_conf.get_val<string>("clog_to_graylog"), oss,
    &log_to_graylog, CLOG_CONFIG_DEFAULT_KEY);
  if (r < 0) {
    lderr(cct) << __func__ << " error parsing 'clog_to_graylog'" << dendl;
    return r;
  }

  r = get_conf_str_map_helper(
    cct->_conf.get_val<string>("clog_to_graylog_host"), oss,
    &log_to_graylog_host, CLOG_CONFIG_DEFAULT_KEY);
  if (r < 0) {
    lderr(cct) << __func__ << " error parsing 'clog_to_graylog_host'" << dendl;
    return r;
  }

  r = get_conf_str_map_helper(
    cct->_conf.get_val<string>("clog_to_graylog_port"), oss,
    &log_to_graylog_port, CLOG_CONFIG_DEFAULT_KEY);
  if (r < 0) {
    lderr(cct) << __func__ << " error parsing 'clog_to_graylog_port'" << dendl;
    return r;
  }

  fsid = cct->_conf.get_val<uuid_d>("fsid");
  host = cct->_conf->host;
  return 0;
}

#undef dout_prefix
#define dout_prefix _prefix(_dout, this)
static ostream& _prefix(std::ostream *_dout, LogClient *logc) {
  return *_dout << "log_client ";
}

static ostream& _prefix(std::ostream *_dout, LogChannel *lc) {
  return *_dout << "log_channel(" << lc->get_log_channel() << ") ";
}

LogChannel::LogChannel(CephContext *cct, LogClient *lc, const string &channel)
  : cct(cct), parent(lc),
    log_channel(channel), log_to_syslog(false), log_to_monitors(false)
{
}

LogChannel::LogChannel(CephContext *cct, LogClient *lc,
                       const string &channel, const string &facility,
                       const string &prio)
  : cct(cct), parent(lc),
    log_channel(channel), log_prio(prio), syslog_facility(facility),
    log_to_syslog(false), log_to_monitors(false)
{
}

LogClient::LogClient(CephContext *cct, Messenger *m, MonMap *mm,
		     enum logclient_flag_t flags)
  : cct(cct), messenger(m), monmap(mm), is_mon(flags & FLAG_MON),
    last_log_sent(0), last_log(0)
{
}

LogClientTemp::LogClientTemp(clog_type type_, LogChannel &parent_)
  : type(type_), parent(parent_)
{
}

LogClientTemp::LogClientTemp(const LogClientTemp &rhs)
  : type(rhs.type), parent(rhs.parent)
{
  // don't want to-- nor can we-- copy the ostringstream
}

LogClientTemp::~LogClientTemp()
{
  if (ss.peek() != EOF)
    parent.do_log(type, ss);
}

void LogChannel::update_config(map<string,string> &log_to_monitors,
			       map<string,string> &log_to_syslog,
			       map<string,string> &log_channels,
			       map<string,string> &log_prios,
			       map<string,string> &log_to_graylog,
			       map<string,string> &log_to_graylog_host,
			       map<string,string> &log_to_graylog_port,
			       uuid_d &fsid,
			       string &host)
{
  ldout(cct, 20) << __func__ << " log_to_monitors " << log_to_monitors
		 << " log_to_syslog " << log_to_syslog
		 << " log_channels " << log_channels
		 << " log_prios " << log_prios
		 << dendl;
  bool to_monitors = (get_str_map_key(log_to_monitors, log_channel,
                                      &CLOG_CONFIG_DEFAULT_KEY) == "true");
  bool to_syslog = (get_str_map_key(log_to_syslog, log_channel,
                                    &CLOG_CONFIG_DEFAULT_KEY) == "true");
  string syslog_facility = get_str_map_key(log_channels, log_channel,
					   &CLOG_CONFIG_DEFAULT_KEY);
  string prio = get_str_map_key(log_prios, log_channel,
				&CLOG_CONFIG_DEFAULT_KEY);
  bool to_graylog = (get_str_map_key(log_to_graylog, log_channel,
				     &CLOG_CONFIG_DEFAULT_KEY) == "true");
  string graylog_host = get_str_map_key(log_to_graylog_host, log_channel,
				       &CLOG_CONFIG_DEFAULT_KEY);
  string graylog_port_str = get_str_map_key(log_to_graylog_port, log_channel,
					    &CLOG_CONFIG_DEFAULT_KEY);
  int graylog_port = atoi(graylog_port_str.c_str());

  set_log_to_monitors(to_monitors);
  set_log_to_syslog(to_syslog);
  set_syslog_facility(syslog_facility);
  set_log_prio(prio);

  if (to_graylog && !graylog) { /* should but isn't */
    graylog = std::make_shared<ceph::logging::Graylog>("clog");
  } else if (!to_graylog && graylog) { /* shouldn't but is */
    graylog.reset();
  }

  if (to_graylog && graylog) {
    graylog->set_fsid(fsid);
    graylog->set_hostname(host);
  }

  if (graylog && (!graylog_host.empty()) && (graylog_port != 0)) {
    graylog->set_destination(graylog_host, graylog_port);
  }

  ldout(cct, 10) << __func__
		 << " to_monitors: " << (to_monitors ? "true" : "false")
		 << " to_syslog: " << (to_syslog ? "true" : "false")
		 << " syslog_facility: " << syslog_facility
		 << " prio: " << prio
		 << " to_graylog: " << (to_graylog ? "true" : "false")
		 << " graylog_host: " << graylog_host
		 << " graylog_port: " << graylog_port
		 << ")" << dendl;
}

void LogChannel::do_log(clog_type prio, std::stringstream& ss)
{
  while (!ss.eof()) {
    string s;
    getline(ss, s);
    if (!s.empty())
      do_log(prio, s);
  }
}

void LogChannel::do_log(clog_type prio, const std::string& s)
{
  std::lock_guard l(channel_lock);
  if (CLOG_ERROR == prio) {
    ldout(cct,-1) << "log " << prio << " : " << s << dendl;
  } else {
    ldout(cct,0) << "log " << prio << " : " << s << dendl;
  }
  LogEntry e;
  e.stamp = ceph_clock_now();
  // seq and who should be set for syslog/graylog/log_to_mon
  e.addrs = parent->get_myaddrs();
  e.name = parent->get_myname();
  e.rank = parent->get_myrank();
  e.prio = prio;
  e.msg = s;
  e.channel = get_log_channel();

  // log to monitor?
  if (log_to_monitors) {
    e.seq = parent->queue(e);
  } else {
    e.seq = parent->get_next_seq();
  }

  // log to syslog?
  if (do_log_to_syslog()) {
    ldout(cct,0) << __func__ << " log to syslog"  << dendl;
    e.log_to_syslog(get_log_prio(), get_syslog_facility());
  }

  // log to graylog?
  if (do_log_to_graylog()) {
    ldout(cct,0) << __func__ << " log to graylog"  << dendl;
    graylog->log_log_entry(&e);
  }
}

Message *LogClient::get_mon_log_message(bool flush)
{
  std::lock_guard l(log_lock);
  if (flush) {
    if (log_queue.empty())
      return nullptr;
    // reset session
    last_log_sent = log_queue.front().seq;
  }
  return _get_mon_log_message();
}

bool LogClient::are_pending()
{
  std::lock_guard l(log_lock);
  return last_log > last_log_sent;
}

Message *LogClient::_get_mon_log_message()
{
  ceph_assert(ceph_mutex_is_locked(log_lock));
  if (log_queue.empty())
    return NULL;

  // only send entries that haven't been sent yet during this mon
  // session!  monclient needs to call reset_session() on mon session
  // reset for this to work right.

  if (last_log_sent == last_log)
    return NULL;

  // limit entries per message
  unsigned num_unsent = last_log - last_log_sent;
  unsigned num_send;
  if (cct->_conf->mon_client_max_log_entries_per_message > 0)
    num_send = std::min(num_unsent, (unsigned)cct->_conf->mon_client_max_log_entries_per_message);
  else
    num_send = num_unsent;

  ldout(cct,10) << " log_queue is " << log_queue.size() << " last_log " << last_log << " sent " << last_log_sent
		<< " num " << log_queue.size()
		<< " unsent " << num_unsent
		<< " sending " << num_send << dendl;
  ceph_assert(num_unsent <= log_queue.size());
  std::deque<LogEntry>::iterator p = log_queue.begin();
  std::deque<LogEntry> o;
  while (p->seq <= last_log_sent) {
    ++p;
    ceph_assert(p != log_queue.end());
  }
  while (num_send--) {
    ceph_assert(p != log_queue.end());
    o.push_back(*p);
    last_log_sent = p->seq;
    ldout(cct,10) << " will send " << *p << dendl;
    ++p;
  }
  
  MLog *log = new MLog(monmap->get_fsid());
  log->entries.swap(o);

  return log;
}

void LogClient::_send_to_mon()
{
  ceph_assert(ceph_mutex_is_locked(log_lock));
  ceph_assert(is_mon);
  ceph_assert(messenger->get_myname().is_mon());
  ldout(cct,10) << __func__ << " log to self" << dendl;
  Message *log = _get_mon_log_message();
  messenger->get_loopback_connection()->send_message(log);
}

version_t LogClient::queue(LogEntry &entry)
{
  std::lock_guard l(log_lock);
  entry.seq = ++last_log;
  log_queue.push_back(entry);

  if (is_mon) {
    _send_to_mon();
  }

  return entry.seq;
}

uint64_t LogClient::get_next_seq()
{
  std::lock_guard l(log_lock);
  return ++last_log;
}

entity_addrvec_t LogClient::get_myaddrs()
{
  return messenger->get_myaddrs();
}

entity_name_t LogClient::get_myrank()
{
  return messenger->get_myname();
}

const EntityName& LogClient::get_myname()
{
  return cct->_conf->name;
}

bool LogClient::handle_log_ack(MLogAck *m)
{
  std::lock_guard l(log_lock);
  ldout(cct,10) << "handle_log_ack " << *m << dendl;

  version_t last = m->last;

  deque<LogEntry>::iterator q = log_queue.begin();
  while (q != log_queue.end()) {
    const LogEntry &entry(*q);
    if (entry.seq > last)
      break;
    ldout(cct,10) << " logged " << entry << dendl;
    q = log_queue.erase(q);
  }
  return true;
}