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Viewing changes to plugin/logging_gearman/logging_gearman.cc

  • Committer: lbieber
  • Date: 2010-10-01 13:06:31 UTC
  • mfrom: (1802.2.2 drizzle-bug-651948)
  • mto: This revision was merged to the branch mainline in revision 1805.
  • Revision ID: lbieber@orisndriz08-20101001130631-xubscnhmj7r5dn6g
Merge Andrew - Fix bug 651948 - Index lengths not retrieved using drizzledump

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plugin/logging_gearman/logging_gearman.cc
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/* -*- mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; -*-
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 *  vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
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 *
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 *  Copyright (C) 2008, 2009 Sun Microsystems, Inc.
 
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 *  Copyright (C) 2008,2009 Sun Microsystems
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 *
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 *  This program is free software; you can redistribute it and/or modify
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 *  it under the terms of the GNU General Public License as published by
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 */
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#include "config.h"
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22
 
#include <boost/scoped_array.hpp>
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#include <drizzled/plugin/logging.h>
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#include <drizzled/gettext.h>
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#include <drizzled/session.h>
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#include <drizzled/errmsg_print.h>
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#include <boost/date_time.hpp>
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#include <boost/program_options.hpp>
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#include <drizzled/module/option_map.h>
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#include <libgearman/gearman.h>
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#include <limits.h>
 
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#include <sys/time.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <cstdio>
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#include <cerrno>
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#include <memory>
39
 
 
40
 
 
41
 
namespace drizzle_plugin
42
 
{
43
 
 
 
34
 
 
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using namespace drizzled;
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namespace po= boost::program_options;
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/* TODO make this dynamic as needed */
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static const int MAX_MSG_LEN= 32*1024;
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41
static bool sysvar_logging_gearman_enable;
 
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static char* sysvar_logging_gearman_host= NULL;
 
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static char* sysvar_logging_gearman_function= NULL;
 
44
 
 
45
 
 
46
/* stolen from mysys/my_getsystime
 
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   until the Session has a good utime "now" we can use
 
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   will have to use this instead */
 
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static uint64_t get_microtime()
 
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{
 
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#if defined(HAVE_GETHRTIME)
 
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  return gethrtime()/1000;
 
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#else
 
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  uint64_t newtime;
 
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  struct timeval t;
 
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  /*
 
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    The following loop is here because gettimeofday may fail on some systems
 
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  */
 
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  while (gettimeofday(&t, NULL) != 0) {}
 
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  newtime= (uint64_t)t.tv_sec * 1000000 + t.tv_usec;
 
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  return newtime;
 
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#endif  /* defined(HAVE_GETHRTIME) */
 
64
}
 
65
 
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/* quote a string to be safe to include in a CSV line
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   that means backslash quoting all commas, doublequotes, backslashes,
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   and all the ASCII unprintable characters
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  return dst;
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}
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173
 
157
 
class LoggingGearman :
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  public drizzled::plugin::Logging
 
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class LoggingGearman : public plugin::Logging
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{
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176
 
161
 
  const std::string _host;
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  const std::string _function;
163
 
 
164
 
  int _gearman_client_ok;
165
 
  gearman_client_st _gearman_client;
166
 
 
167
 
  LoggingGearman();
168
 
  LoggingGearman(const LoggingGearman&);
 
177
  int gearman_client_ok;
 
178
  gearman_client_st gearman_client;
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179
 
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public:
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181
 
172
 
  LoggingGearman(const std::string &host,
173
 
                 const std::string &function) :
174
 
    drizzled::plugin::Logging("LoggingGearman"),
175
 
    _host(host),
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    _function(function),
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    _gearman_client_ok(0),
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    _gearman_client()
 
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  LoggingGearman()
 
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    : plugin::Logging("LoggingGearman"),
 
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      gearman_client_ok(0)
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185
  {
180
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    gearman_return_t ret;
181
187
 
182
 
 
183
 
    if (gearman_client_create(&_gearman_client) == NULL)
 
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    if (sysvar_logging_gearman_enable == false)
 
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      return;
 
190
 
 
191
    if (sysvar_logging_gearman_host == NULL)
 
192
      return;
 
193
 
 
194
 
 
195
    if (gearman_client_create(&gearman_client) == NULL)
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196
    {
185
 
      drizzled::sql_perror(_("fail gearman_client_create()"));
 
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      char errmsg[STRERROR_MAX];
 
198
      strerror_r(errno, errmsg, sizeof(errmsg));
 
199
      errmsg_printf(ERRMSG_LVL_ERROR, _("fail gearman_client_create(): %s"),
 
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                    errmsg);
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      return;
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    }
188
203
 
189
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    /* TODO, be able to override the port */
190
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    /* TODO, be able send to multiple servers */
191
 
    ret= gearman_client_add_server(&_gearman_client,
192
 
                                   host.c_str(), 0);
 
206
    ret= gearman_client_add_server(&gearman_client,
 
207
                                   sysvar_logging_gearman_host, 0);
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    if (ret != GEARMAN_SUCCESS)
194
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    {
195
 
      drizzled::errmsg_printf(drizzled::error::ERROR, _("fail gearman_client_add_server(): %s"),
196
 
                              gearman_client_error(&_gearman_client));
 
210
      errmsg_printf(ERRMSG_LVL_ERROR, _("fail gearman_client_add_server(): %s"),
 
211
                    gearman_client_error(&gearman_client));
197
212
      return;
198
213
    }
199
214
 
200
 
    _gearman_client_ok= 1;
 
215
    gearman_client_ok= 1;
201
216
 
202
217
  }
203
218
 
204
219
  ~LoggingGearman()
205
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  {
206
 
    if (_gearman_client_ok)
 
221
    if (gearman_client_ok)
207
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    {
208
 
      gearman_client_free(&_gearman_client);
 
223
      gearman_client_free(&gearman_client);
209
224
    }
210
225
  }
211
226
 
212
 
  virtual bool post(drizzled::Session *session)
 
227
  virtual bool post(Session *session)
213
228
  {
214
 
    boost::scoped_array<char> msgbuf(new char[MAX_MSG_LEN]);
 
229
    char msgbuf[MAX_MSG_LEN];
215
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    int msgbuf_len= 0;
216
231
  
217
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    assert(session != NULL);
220
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       but that crashes the server, so for now, we just lie a little bit
221
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    */
222
237
 
223
 
    if (not _gearman_client_ok)
 
238
    if (!gearman_client_ok)
224
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        return false;
225
240
  
226
 
    /* 
227
 
      TODO, the session object should have a "utime command completed"
228
 
      inside itself, so be more accurate, and so this doesnt have to
229
 
      keep calling current_utime, which can be slow.
230
 
    */
231
 
    uint64_t t_mark= session->getCurrentTimestamp(false);
232
 
  
233
 
 
 
241
    /* TODO, the session object should have a "utime command completed"
 
242
       inside itself, so be more accurate, and so this doesnt have to
 
243
       keep calling current_utime, which can be slow */
 
244
  
 
245
    uint64_t t_mark= get_microtime();
 
246
  
234
247
    // buffer to quotify the query
235
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    unsigned char qs[255];
236
249
  
237
250
    // to avoid trying to printf %s something that is potentially NULL
238
 
    drizzled::util::string::const_shared_ptr dbs(session->schema());
 
251
    const char *dbs= session->db.empty() ? "" : session->db.c_str();
239
252
  
240
253
    msgbuf_len=
241
 
      snprintf(msgbuf.get(), MAX_MSG_LEN,
 
254
      snprintf(msgbuf, MAX_MSG_LEN,
242
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               "%"PRIu64",%"PRIu64",%"PRIu64",\"%.*s\",\"%s\",\"%.*s\","
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               "%"PRIu64",%"PRIu64",%"PRIu64",%"PRIu64",%"PRIu64","
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               "%"PRIu32",%"PRIu32",%"PRIu32",\"%s\"",
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               session->thread_id,
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               session->getQueryId(),
248
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               // dont need to quote the db name, always CSV safe
249
 
               (int)dbs->size(), dbs->c_str(),
 
262
               (int)session->db.length(), dbs,
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               // do need to quote the query
251
 
               quotify((const unsigned char *)session->getQueryString()->c_str(), session->getQueryString()->length(), qs, sizeof(qs)),
252
 
               // getCommandName is defined in drizzled/sql_parse.h dont
253
 
               // need to quote the command name, always CSV safe
254
 
               (int)drizzled::getCommandName(session->command).size(),
255
 
               drizzled::getCommandName(session->command).c_str(),
 
264
               quotify((const unsigned char *)session->getQueryString().c_str(),
 
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                       session->getQueryLength(), qs, sizeof(qs)),
 
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               // command_name is defined in drizzled/sql_parse.cc
 
267
               // dont need to quote the command name, always CSV safe
 
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               (int)command_name[session->command].length,
 
269
               command_name[session->command].str,
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               // counters are at end, to make it easier to add more
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               (t_mark - session->getConnectMicroseconds()),
258
 
               (session->getElapsedTime()),
 
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               (t_mark - session->start_utime),
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               (t_mark - session->utime_after_lock),
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               session->sent_row_count,
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               session->examined_row_count,
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               session->tmp_table,
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               session->total_warn_count,
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               session->getServerId(),
265
 
               drizzled::glob_hostname
 
279
               glob_hostname
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               );
267
281
  
268
282
    char job_handle[GEARMAN_JOB_HANDLE_SIZE];
269
283
  
270
 
    (void) gearman_client_do_background(&_gearman_client,
271
 
                                        _function.c_str(),
 
284
    (void) gearman_client_do_background(&gearman_client,
 
285
                                        sysvar_logging_gearman_function,
272
286
                                        NULL,
273
 
                                        (void *) msgbuf.get(),
 
287
                                        (void *) msgbuf,
274
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                                        (size_t) msgbuf_len,
275
289
                                        job_handle);
276
290
  
280
294
 
281
295
static LoggingGearman *handler= NULL;
282
296
 
283
 
static int logging_gearman_plugin_init(drizzled::module::Context &context)
 
297
static int logging_gearman_plugin_init(module::Context &context)
284
298
{
285
 
  const drizzled::module::option_map &vm= context.getOptions();
286
 
 
287
 
  handler= new LoggingGearman(vm["host"].as<std::string>(),
288
 
                              vm["function"].as<std::string>());
 
299
  handler= new LoggingGearman();
289
300
  context.add(handler);
290
 
  context.registerVariable(new drizzled::sys_var_const_string_val("host", vm["host"].as<std::string>()));
291
 
  context.registerVariable(new drizzled::sys_var_const_string_val("function", vm["function"].as<std::string>()));
292
301
 
293
302
  return 0;
294
303
}
295
304
 
296
305
static void init_options(drizzled::module::option_context &context)
297
306
{
298
 
  context("host",
299
 
          po::value<std::string>()->default_value("localhost"),
300
 
          _("Hostname for logging to a Gearman server"));
301
 
  context("function",
302
 
          po::value<std::string>()->default_value("drizzlelog"),
303
 
          _("Gearman Function to send logging to"));
 
307
  context("enable",
 
308
          po::value<bool>(&sysvar_logging_gearman_enable)->default_value(false)->zero_tokens(),
 
309
          N_("Enable logging to a gearman server"));
304
310
}
305
311
 
306
 
} /* namespace drizzle_plugin */
 
312
static DRIZZLE_SYSVAR_BOOL(
 
313
                           enable,
 
314
                           sysvar_logging_gearman_enable,
 
315
                           PLUGIN_VAR_NOCMDARG,
 
316
                           N_("Enable logging to a gearman server"),
 
317
                           NULL, /* check func */
 
318
                           NULL, /* update func */
 
319
                           false /* default */);
 
320
 
 
321
static DRIZZLE_SYSVAR_STR(
 
322
                          host,
 
323
                          sysvar_logging_gearman_host,
 
324
                          PLUGIN_VAR_READONLY,
 
325
                          N_("Hostname for logging to a Gearman server"),
 
326
                          NULL, /* check func */
 
327
                          NULL, /* update func*/
 
328
                          "localhost" /* default */);
 
329
 
 
330
static DRIZZLE_SYSVAR_STR(
 
331
                          function,
 
332
                          sysvar_logging_gearman_function,
 
333
                          PLUGIN_VAR_READONLY,
 
334
                          N_("Gearman Function to send logging to"),
 
335
                          NULL, /* check func */
 
336
                          NULL, /* update func*/
 
337
                          "drizzlelog" /* default */);
 
338
 
 
339
static drizzle_sys_var* logging_gearman_system_variables[]= {
 
340
  DRIZZLE_SYSVAR(enable),
 
341
  DRIZZLE_SYSVAR(host),
 
342
  DRIZZLE_SYSVAR(function),
 
343
  NULL
 
344
};
307
345
 
308
346
DRIZZLE_DECLARE_PLUGIN
309
347
{
312
350
    "0.1",
313
351
    "Mark Atwood <mark@fallenpegasus.com>",
314
352
    N_("Log queries to a Gearman server"),
315
 
    drizzled::PLUGIN_LICENSE_GPL,
316
 
    drizzle_plugin::logging_gearman_plugin_init,
317
 
    NULL,
318
 
    drizzle_plugin::init_options
 
353
    PLUGIN_LICENSE_GPL,
 
354
    logging_gearman_plugin_init,
 
355
    logging_gearman_system_variables,
 
356
    init_options
319
357
}
320
358
DRIZZLE_DECLARE_PLUGIN_END;