NAME

DBIx::QueryLog - Logging queries for DBI

SYNOPSIS

  use DBIx::QueryLog;
  my $row = $dbh->selectrow_hashref('SELECT * FROM people WHERE user_id = ?', undef, qw/1986/);
  # => SELECT * FROM people WHERE user_id = '1986';

DESCRIPTION

DBIx::QueryLog is logs each execution time and the actual query.

Currently, works on DBD::mysql, DBD::Pg and DBD::sqlite.

CLASS METHODS

threshold

Logged if exceeding this value. (default not set)

  DBIx::QueryLog->threshold(0.1); # sec

And, you can also specify DBIX_QUERYLOG_THRESHOLD environment variable.

probability

Run only once per defined value. (default not set)

  DBIx::QueryLog->probability(100); # about 1/100

And, you can also specify DBIX_QUERYLOG_PROBABILITY environment variable.

logger

Sets logger class (e.g. Log::Dispach)

Logger class must can be call `log` method.

  DBIx::QueryLog->logger($logger);

skip_bind

If enabled, will be faster, but SQL is not bound.

  DBIx::QueryLog->skip_bind(1);
  my $row = $dbh->do(...);
  # => 'SELECT * FROM people WHERE user_id = ?' : [1986]

And, you can also specify DBIX_QUERYLOG_SKIP_BIND environment variable.

color

If you want to colored SQL output are:

  DBIx::QueryLog->color('green');

And, you can also specify DBIX_QUERYLOG_COLOR environment variable.

useqq

using $Data::Dumper::Useqq.

  DBIx::QueryLog->useqq(1);

And, you can also specify DBIX_QUERYLOG_USEQQ environment variable.

compact

Compaction SQL.

  DBIx::QueryLog->compact(1);
  #  FROM: SELECT          *  FROM      foo WHERE bar = 'baz'
  #  TO  : SELECT * FROM foo WHERE bar = 'baz'

And, you can also specify DBIX_QUERYLOG_COMPACT environment variable.

explain

EXPERIMENTAL

Logged Explain. (only supports mysql, PostgreSQL is incompletely supported)

This feature requires Text::ASCIITable installed.

  DBIx::QueryLog->explain(1);
  my $row = $dbh->do(...);
  # => SELECT * FROM peaple WHERE user_id = '1986'
  #  .----------------------------------------------------------------------------------------------.
  #  | id | select_type | table  | type  | possible_keys | key     | key_len | ref   | rows | Extra |
  #  +----+-------------+--------+-------+---------------+---------+---------+-------+------+-------+
  #  |  1 | SIMPLE      | peaple | const | PRIMARY       | PRIMARY |       4 | const |    1 |       |
  #  '----+-------------+--------+-------+---------------+---------+---------+-------+------+-------'

And, you can also specify DBIX_QUERYLOG_EXPLAIN environment variable.

show_data_source

if enabled, added DBI data_source in default message.

  $dbh->do('SELECT * FROM sqlite_master');
  # [2012-03-09T00:58:23] [main] [0.000953] SELECT * FROM sqlite_master at foo.pl line 34

  DBIx::QueryLog->show_data_source(1);
  $dbh->do('SELECT * FROM sqlite_master');
  # [2012-03-09T00:58:23] [main] [0.000953] [SQLite:dbname=/tmp/TrSATdY3cc] SELECT * FROM sqlite_master at foo.pl line 56

And, you can also specify DBIX_QUERYLOG_SHOW_DATASOURCE environment variable.

guard

Returned guard object.

  use DBIx::QueryLog ();
  {
      my $guard = DBIx::QueryLog->guard;
      # ... do something
  }

This code same as are:

  use DBIx::QueryLog ();
  
  DBIx::QueryLog->enable;
  # ... do something
  DBIx::QueryLog->disable;

is_enabled

Return true or false

  use DBIx::QueryLog ();

  say DBIx::QueryLog->is_enabled;

  DBIx::QueryLog->disable;

SEE ALSO Localization section.

TIPS

Localization

If you want to localize the scope are:

  use DBIx::QueryLog (); # or require DBIx::QueryLog;

  DBIx::QueryLog->begin; # or DBIx::QueryLog->enable
  my $row = $dbh->do(...);
  DBIx::QueryLog->end;   # or DBIx::QueryLog->disable

Now you could enable logging between begin and end.

LOG_LEVEL

If you set logger, it might want to change the logging level.

It can be modified as follows:

  $DBIx::QueryLog::LOG_LEVEL = 'info'; # default 'debug'

OUTPUT

If you want to change of output are:

  open my $fh, '>', 'dbix_query.log';
  $DBIx::QueryLog::OUTPUT = $fh;

or you can specify code reference:

  $DBIx::QueryLog::OUTPUT = sub {
      my %params = @_;

      my $format = << 'FORMAT';
  localtime  : %s       # ISO-8601 without timezone
  level      : %s       # log level ($DBIx::QueryLog::LOG_LEVEL)
  time       : %f       # elasped time
  data_source: $s       # data_source
  sql        : %s       # executed query
  bind_params: %s       # bind parameters
  pkg        : %s       # caller package
  file       : %s       # caller file
  line       : %d       # caller line
  FORMAT

      printf $format,
          @params{qw/localtime level pkg time data_source sql/},
          join(', ', @{$params{bind_params}}),
          @params{qw/file line/};

      printf "AutoCommit?: %d\n", $params->{dbh}->{AutoCommit} ? 1 : 0;
  };

Default $OUTPUT is STDERR.

AUTHOR

xaicron <xaicron {at} cpan.org>

THANKS TO

tokuhirom

yibe

kamipo

tomi-ru

riywo

COPYRIGHT

Copyright 2010 - xaicron

LICENSE

This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

SEE ALSO

DBI