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package YAML::DBH; |
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51124
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use strict; |
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use Exporter; |
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use DBI; |
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use DBD::mysql; |
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use Carp; |
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use YAML; |
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use vars qw(@EXPORT_OK %EXPORT_TAGS @ISA $VERSION @errstr); |
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@ISA = qw/Exporter/; |
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@EXPORT_OK = qw(yaml_dbh); |
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%EXPORT_TAGS = ( all => \@EXPORT_OK ); |
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$VERSION = sprintf "%d.%02d", q$Revision: 1.8 $ =~ /(\d+)/g; |
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sub yaml_dbh { |
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# 0) MAIN VARIABLES OF INTEREST |
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# 0.a) the argument |
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my $arg = $_[0] or croak('yaml_dbh() missing path to yaml file argument'); |
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# 0.b) the main arguments to open a connect via DBI are dbsource, username, and password |
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my ( $dbsource, $username, $password ); |
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# 0.c) what we explore inside is the conf data hashref |
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my $conf; |
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# 1) RESOLVE THE CONF HASHREF ITSELF |
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# figure out conf data, if conf was passed as a hashref or a path string |
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# 1.a) if a ref, assume a conf ref was passed (hash or array, could be both?) |
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if ( ref $arg ){ |
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$conf = $arg; |
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} |
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# 1.b) otherwise assume the argument is a path string to a yaml file |
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else { |
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$conf = YAML::LoadFile($arg) |
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or croak("yaml_dbh(), cant YAML LoadFile: '$arg'"); |
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} |
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# 2) SCAN THE CONF HASHREF FOR REQ CONNECT DATA |
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# 2.a) try mysql |
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if( ! (($dbsource, $username, $password) = _findkeys_mysql($conf)) ){ |
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# 2.b) try sqlite |
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( $dbsource, $username, $password ) = _findkeys_sqlite($conf) |
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# 2.c) or croak |
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or croak("yaml_dbh() Cannot find proper params in arg '$arg' to connect via sqlite or mysql, errs: ".join(', ',@errstr)); |
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} |
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# 3) OPEN DB HANDLE |
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my $dbh = DBI->connect( |
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$dbsource, |
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$username, |
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$password |
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) or die; |
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return $dbh; |
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} |
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sub _findkeys_mysql { |
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my $conf = shift; |
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my $username = _findkey( $conf => qw(username uname user dbuser dbusername) ) |
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or push @errstr, "missing username"; |
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my $hostname = _findkey( $conf => qw(hostname host dbhost dbhostname) ) || 'localhost'; |
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my $password = _findkey( $conf => qw(password dbpass dbpassword passw dbpassw pass)) |
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or push @errstr, "missing password"; |
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my $database = _findkey( $conf => qw(database dbname databasename)) |
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or push @errstr, "missing database name"; |
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my $dbdriver = _findkey( $conf => qw(dbdriver driver db_driver) ) || 'mysql'; |
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(@errstr and scalar @errstr) and (warn("Errors: @errstr") and return); |
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### $database |
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### $hostname |
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### $username |
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### $password |
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### $dbdriver |
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my $dbsource = "DBI:$dbdriver:database=$database;host=$hostname"; |
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### $dbsource |
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return( $dbsource, $username, $password); |
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} |
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sub _findkeys_sqlite { |
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my $conf = shift; |
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my $abs_sqlite = _findkey( $conf => qw(abs_db abs_sqlite) ) |
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or ((push @errstr, "missing abs_sqlite") and return); |
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109
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my $dbdriver = _findkey( $conf => qw(dbdriver driver db_driver) ) || 'SQLite'; |
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111
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my $dbsource = "dbi:$dbdriver:dbname=$abs_sqlite"; |
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### $dbsource |
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114
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return ($dbsource,'',''); |
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} |
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118
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119
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# pass it the conf hash ref, and a list of possible case insensitive key matches |
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sub _findkey { |
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my $_hashref = shift; |
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123
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# convert the hashref |
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my $c; |
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map { $c->{lc($_)} = $_hashref->{$_} } keys %$_hashref; |
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127
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for my $_poss ( @_ ){ |
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my $poss = lc($_poss); |
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if (exists $c->{$poss}){ |
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return $c->{$poss}; |
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} |
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} |
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return; |
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135
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} |
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137
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1; |
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__END__ |