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Viewing changes to plugin/logging_gearman/logging_gearman.cc

  • Committer: Lee Bieber
  • Date: 2010-12-03 01:16:19 UTC
  • mfrom: (1819.9.81 update-innobase)
  • Revision ID: kalebral@gmail.com-20101203011619-n6v584rijwdet05b
Merge Stewart - update Innobase plugin based on InnoDB 1.1.2

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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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#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 <cerrno>
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#include <memory>
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namespace drizzle_plugin
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{
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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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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;
 
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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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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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  const std::string _host;
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  const std::string _function;
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  int _gearman_client_ok;
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  gearman_client_st _gearman_client;
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  LoggingGearman();
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  LoggingGearman(const LoggingGearman&);
 
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  int gearman_client_ok;
 
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  gearman_client_st gearman_client;
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public:
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  LoggingGearman(const std::string &host,
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                 const std::string &function) :
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    drizzled::plugin::Logging("LoggingGearman"),
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    _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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  {
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    gearman_return_t ret;
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    if (gearman_client_create(&_gearman_client) == NULL)
 
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    if (sysvar_logging_gearman_enable == false)
 
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      return;
 
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    if (sysvar_logging_gearman_host == NULL)
 
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      return;
 
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    if (gearman_client_create(&gearman_client) == NULL)
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    {
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      drizzled::sql_perror(_("fail gearman_client_create()"));
 
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      char errmsg[STRERROR_MAX];
 
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      strerror_r(errno, errmsg, sizeof(errmsg));
 
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      errmsg_printf(ERRMSG_LVL_ERROR, _("fail gearman_client_create(): %s"),
 
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                    errmsg);
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      return;
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    }
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    /* TODO, be able to override the port */
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    /* TODO, be able send to multiple servers */
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    ret= gearman_client_add_server(&_gearman_client,
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                                   host.c_str(), 0);
 
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    ret= gearman_client_add_server(&gearman_client,
 
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                                   sysvar_logging_gearman_host, 0);
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    if (ret != GEARMAN_SUCCESS)
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    {
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      drizzled::errmsg_printf(drizzled::error::ERROR, _("fail gearman_client_add_server(): %s"),
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                              gearman_client_error(&_gearman_client));
 
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      errmsg_printf(ERRMSG_LVL_ERROR, _("fail gearman_client_add_server(): %s"),
 
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                    gearman_client_error(&gearman_client));
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      return;
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    }
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    _gearman_client_ok= 1;
 
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    gearman_client_ok= 1;
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  }
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  ~LoggingGearman()
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  {
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    if (_gearman_client_ok)
 
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    if (gearman_client_ok)
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    {
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      gearman_client_free(&_gearman_client);
 
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      gearman_client_free(&gearman_client);
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    }
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  }
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  virtual bool post(drizzled::Session *session)
 
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  virtual bool post(Session *session)
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  {
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    boost::scoped_array<char> msgbuf(new char[MAX_MSG_LEN]);
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    int msgbuf_len= 0;
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       but that crashes the server, so for now, we just lie a little bit
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    */
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223
 
    if (not _gearman_client_ok)
 
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    if (!gearman_client_ok)
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        return false;
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226
 
    /* 
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      TODO, the session object should have a "utime command completed"
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      inside itself, so be more accurate, and so this doesnt have to
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      keep calling current_utime, which can be slow.
230
 
    */
231
 
    uint64_t t_mark= session->getCurrentTimestamp(false);
 
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    /* TODO, the session object should have a "utime command completed"
 
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       inside itself, so be more accurate, and so this doesnt have to
 
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       keep calling current_utime, which can be slow */
 
227
  
 
228
    boost::posix_time::ptime mytime(boost::posix_time::microsec_clock::local_time());
 
229
    boost::posix_time::ptime epoch(boost::gregorian::date(1970,1,1));
 
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    uint64_t t_mark= (mytime-epoch).total_microseconds();
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    // buffer to quotify the query
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    unsigned char qs[255];
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    // to avoid trying to printf %s something that is potentially NULL
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    drizzled::util::string::const_shared_ptr dbs(session->schema());
 
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    const char *dbs= session->db.empty() ? "" : session->db.c_str();
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    msgbuf_len=
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      snprintf(msgbuf.get(), MAX_MSG_LEN,
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               session->thread_id,
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               session->getQueryId(),
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               // dont need to quote the db name, always CSV safe
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               (int)dbs->size(), dbs->c_str(),
 
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               (int)session->getSchema().length(), dbs,
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               // do need to quote the query
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               quotify((const unsigned char *)session->getQueryString()->c_str(), session->getQueryString()->length(), qs, sizeof(qs)),
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               // getCommandName is defined in drizzled/sql_parse.h dont
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               // need to quote the command name, always CSV safe
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               (int)drizzled::getCommandName(session->command).size(),
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               drizzled::getCommandName(session->command).c_str(),
 
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               // command_name is defined in drizzled/sql_parse.cc
 
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               // dont need to quote the command name, always CSV safe
 
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               (int)command_name[session->command].length,
 
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               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()),
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               (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(),
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               drizzled::glob_hostname
 
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               glob_hostname
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               );
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    char job_handle[GEARMAN_JOB_HANDLE_SIZE];
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    (void) gearman_client_do_background(&_gearman_client,
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                                        _function.c_str(),
 
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    (void) gearman_client_do_background(&gearman_client,
 
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                                        sysvar_logging_gearman_function,
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                                        NULL,
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                                        (void *) msgbuf.get(),
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                                        (size_t) msgbuf_len,
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static LoggingGearman *handler= NULL;
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static int logging_gearman_plugin_init(drizzled::module::Context &context)
 
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static int logging_gearman_plugin_init(module::Context &context)
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{
285
 
  const drizzled::module::option_map &vm= context.getOptions();
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  handler= new LoggingGearman(vm["host"].as<std::string>(),
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                              vm["function"].as<std::string>());
 
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  handler= new LoggingGearman();
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  context.add(handler);
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  context.registerVariable(new drizzled::sys_var_const_string_val("host", vm["host"].as<std::string>()));
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  context.registerVariable(new drizzled::sys_var_const_string_val("function", vm["function"].as<std::string>()));
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  return 0;
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}
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static void init_options(drizzled::module::option_context &context)
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{
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  context("host",
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          po::value<std::string>()->default_value("localhost"),
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          _("Hostname for logging to a Gearman server"));
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  context("function",
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          po::value<std::string>()->default_value("drizzlelog"),
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          _("Gearman Function to send logging to"));
 
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  context("enable",
 
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          po::value<bool>(&sysvar_logging_gearman_enable)->default_value(false)->zero_tokens(),
 
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          N_("Enable logging to a gearman server"));
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}
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} /* namespace drizzle_plugin */
 
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static DRIZZLE_SYSVAR_BOOL(
 
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                           enable,
 
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                           sysvar_logging_gearman_enable,
 
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                           PLUGIN_VAR_NOCMDARG,
 
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                           N_("Enable logging to a gearman server"),
 
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                           NULL, /* check func */
 
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                           NULL, /* update func */
 
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                           false /* default */);
 
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static DRIZZLE_SYSVAR_STR(
 
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                          host,
 
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                          sysvar_logging_gearman_host,
 
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                          PLUGIN_VAR_READONLY,
 
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                          N_("Hostname for logging to a Gearman server"),
 
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                          NULL, /* check func */
 
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                          NULL, /* update func*/
 
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                          "localhost" /* default */);
 
314
 
 
315
static DRIZZLE_SYSVAR_STR(
 
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                          function,
 
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                          sysvar_logging_gearman_function,
 
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                          PLUGIN_VAR_READONLY,
 
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                          N_("Gearman Function to send logging to"),
 
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                          NULL, /* check func */
 
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                          NULL, /* update func*/
 
322
                          "drizzlelog" /* default */);
 
323
 
 
324
static drizzle_sys_var* logging_gearman_system_variables[]= {
 
325
  DRIZZLE_SYSVAR(enable),
 
326
  DRIZZLE_SYSVAR(host),
 
327
  DRIZZLE_SYSVAR(function),
 
328
  NULL
 
329
};
307
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308
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DRIZZLE_DECLARE_PLUGIN
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{
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    "0.1",
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    "Mark Atwood <mark@fallenpegasus.com>",
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    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
 
338
    PLUGIN_LICENSE_GPL,
 
339
    logging_gearman_plugin_init,
 
340
    logging_gearman_system_variables,
 
341
    init_options
319
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}
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DRIZZLE_DECLARE_PLUGIN_END;