![[tokkee]](http://tokkee.org/images/avatar.png){kind=avatar}
index 9f341ec5e132ab1eb83f06fb8da75227d6bb1649..8eba13d478cf28edeaadfc914db033ef716cfda2 100644 (file)
use warnings;
use DBI;
use Data::Dumper;
+use GOSA::GosaSupportDaemon;
+use threads;
+use Time::HiRes qw(usleep);
+my $col_names = {};
sub new {
- my $object = shift;
+ my $class = shift;
my $db_name = shift;
- my $obj_ref = {};
- bless($obj_ref,$object);
+ my $lock = $db_name.".lock";
+ # delete existing lock - instance should be running only once
+ if(stat($lock)) {
+ unlink($lock);
+ }
+ my $self = {dbh=>undef,db_name=>undef,db_lock=>undef,db_lock_handle=>undef};
my $dbh = DBI->connect("dbi:SQLite:dbname=$db_name");
- $obj_ref->{dbh} = $dbh;
+ $self->{dbh} = $dbh;
+ $self->{db_name} = $db_name;
+ $self->{db_lock} = $lock;
+ bless($self,$class);
- return($obj_ref);
+ return($self);
}
-
-sub create_table {
- my $object = shift;
- my $table_name = shift;
- my $col_names_ref = shift;
-# unshift(@{$col_names_ref}, "id INTEGER PRIMARY KEY AUTOINCREMENT");
- my $col_names_string = join(', ', @{$col_names_ref});
- my $sql_statement = "CREATE TABLE IF NOT EXISTS $table_name ( $col_names_string )";
- $object->{dbh}->do($sql_statement);
- return 0;
+sub lock_exists : locked {
+ my $self=shift;
+ my $funcname=shift;
+ my $lock = $self->{db_lock};
+ my $result=(-f $lock);
+ if($result) {
+ #&main::daemon_log("(".((defined $funcname)?$funcname:"").") Lock (PID ".$$.") $lock found", 8);
+ usleep 100;
+ }
+ return $result;
}
-
+sub create_lock : locked {
+ my $self=shift;
+ my $funcname=shift;
+ #&main::daemon_log("(".((defined $funcname)?$funcname:"").") Creating Lock (PID ".$$.") ".($self->{db_lock}),8);
-sub add_dbentry {
+ my $lock = $self->{db_lock};
+ while( -f $lock ) {
+ #&main::daemon_log("(".((defined $funcname)?$funcname:"").") Lock (PID ".$$.") $lock found",8);
+ usleep 100;
+ }
- my $obj = shift;
- my $arg = shift;
+ open($self->{db_lock_handle},'>',$self->{db_lock});
+}
- # if dbh not specified, return errorflag 1
- my $table = $arg->{table};
- if (not defined $table) {
- return 1;
- }
+sub remove_lock : locked {
+ my $self=shift;
+ my $funcname=shift;
+ #&main::daemon_log("(".((defined $funcname)?$funcname:"").") Removing Lock (PID ".$$.") ".$self->{db_lock}, 8);
+ close($self->{db_lock_handle});
+ unlink($self->{db_lock});
+}
- # specify primary key in table
- my $primkey = $arg->{primkey};
- # check wether value to primary key is specified
- if ( ( defined $primkey ) && ( not $arg->{ $primkey } ) ) {
- return 2;
+sub create_table {
+ my $self = shift;
+ my $table_name = shift;
+ my $col_names_ref = shift;
+ my @col_names;
+ foreach my $col_name (@$col_names_ref) {
+ my @t = split(" ", $col_name);
+ $col_name = $t[0];
+ push(@col_names, $col_name);
}
- # check wether primkey is unique in table, otherwise return errorflag 3
- if ( defined $primkey ) {
- my $res = @{ $obj->{dbh}->selectall_arrayref( "SELECT * FROM $table WHERE $primkey='$arg->{$primkey}'") };
- if ($res != 0) {
- return 3;
- }
- }
-
- # fetch column names of table
- my $col_names = $obj->get_table_columns($table);
-
- # assign values to column name variables
- my @add_list;
- foreach my $col_name (@{$col_names}) {
- # use function parameter for column values
- if (exists $arg->{$col_name}) {
- push(@add_list, $arg->{$col_name});
- }
- # use default values for column values
-# } else {
-# my $default_val = "none";
-# if ($col_name eq "timestamp") {
-# $default_val = "19700101000000";
-# }
-# push(@add_list, $default_val);
-# }
- }
-
- my $sql_statement = " INSERT INTO $table VALUES ('".join("', '", @add_list)."')";
- print " INSERT INTO $table VALUES ('".join("', '", @add_list)."')\n";
- my $db_res = $obj->{dbh}->do($sql_statement);
- print " DB result: $db_res\n";
+ $col_names->{ $table_name } = $col_names_ref;
+ my $col_names_string = join("', '", @col_names);
+ my $sql_statement = "CREATE TABLE IF NOT EXISTS $table_name ( '$col_names_string' )";
+ &create_lock($self,'create_table');
+ $self->{dbh}->do($sql_statement);
+ &remove_lock($self,'create_table');
return 0;
-
}
-# error-flags
-# 1 no table ($table) defined
-# 2 no restriction parameter ($restric_pram) defined
-# 3 no restriction value ($restric_val) defined
-# 4 column name not known in table
-# 5 no column names to change specified
-sub update_dbentry {
- my $obj = shift;
+sub add_dbentry {
+ my $self = shift;
my $arg = shift;
- # check completeness of function parameter
- # extract table statement from arg hash
+ # if dbh not specified, return errorflag 1
my $table = $arg->{table};
- if (not defined $table) {
- return 1;
- } else {
- delete $arg->{table};
+ if( not defined $table ) {
+ return 1 ;
}
-
- # extract where parameter from arg hash
- my $where_statement = "";
- if( exists $arg->{where} ) {
- my $where_hash = @{ $arg->{where} }[0];
- if( 0 < keys %{ $where_hash } ) {
- my @where_list;
- while( my ($rest_pram, $rest_val) = each %{ $where_hash } ) {
- my $statement;
- if( $rest_pram eq 'timestamp' ) {
- $statement = "$rest_pram<'@{ $rest_val }[0]'";
+
+ # specify primary key in table
+ if (not exists $arg->{primkey}) {
+ return (2, "a hash key 'primkey' with at least an empty list as value is necessary for add_dbentry");
+ }
+ my $primkeys = $arg->{'primkey'};
+ my $prim_statement="";
+ if( 0 != @$primkeys ) {
+ my @prim_list;
+ foreach my $primkey (@$primkeys) {
+ if($primkey eq 'id') {
+ # if primkey is id, fetch max id from table and give new job id= max(id)+1
+ my $sql_statement = "SELECT MAX(CAST(id AS INTEGER)) FROM $table";
+ &create_lock($self,'add_dbentry');
+ my $max_id = @{ @{ $self->{dbh}->selectall_arrayref($sql_statement) }[0] }[0];
+ &remove_lock($self,'add_dbentry');
+ my $id;
+ if( defined $max_id) {
+ $id = $max_id + 1;
} else {
- $statement = "$rest_pram='@{ $rest_val }[0]'";
+ $id = 1;
}
- push( @where_list, $statement );
+ $arg->{id} = $id;
+ }
+ if( not exists $arg->{$primkey} ) {
+ return (3, "primkey '$primkey' has no value for add_dbentry");
}
- $where_statement .= "WHERE ".join('AND ', @where_list);
+ push(@prim_list, "$primkey='".$arg->{$primkey}."'");
}
+ $prim_statement = "WHERE ".join(" AND ", @prim_list);
}
-
- # extract update parameter from arg hash
- my $update_hash = @{ $arg->{update} }[0];
- my $update_statement = "";
- if( 0 < keys %{ $update_hash } ) {
- my @update_list;
- while( my ($rest_pram, $rest_val) = each %{ $update_hash } ) {
- my $statement = "$rest_pram='@{ $rest_val }[0]'";
- push( @update_list, $statement );
- }
- $update_statement .= join(', ', @update_list);
+
+ # if timestamp is not provided, add timestamp
+ if( not exists $arg->{timestamp} ) {
+ $arg->{timestamp} = &get_time;
}
- my $sql_statement = "UPDATE $table SET $update_statement $where_statement";
- my $db_answer = $obj->{dbh}->do($sql_statement);
- return $db_answer;
-}
-
+ # check wether primkey is unique in table, otherwise return errorflag
+ my $sql_statement = "SELECT * FROM $table $prim_statement";
+ &create_lock($self,'add_dbentry');
+ my $res = @{ $self->{dbh}->selectall_arrayref($sql_statement) };
+ &remove_lock($self,'add_dbentry');
+
+ if ($res == 0) {
+ # primekey is unique
+
+ # fetch column names of table
+ my $col_names = &get_table_columns($self, $table);
+
+ # assign values to column name variables
+ my @col_list;
+ my @val_list;
+ foreach my $col_name (@{$col_names}) {
+ # use function parameter for column values
+ if (exists $arg->{$col_name}) {
+ push(@col_list, $col_name);
+ push(@val_list, $arg->{$col_name});
+ }
+ }
+
+ my $sql_statement = "INSERT INTO $table (".join(", ", @col_list).") VALUES ('".join("', '", @val_list)."')";
+ &create_lock($self,'add_dbentry');
+ my $db_res = $self->{dbh}->do($sql_statement);
+ &remove_lock($self,'add_dbentry');
+ if( $db_res != 1 ) {
+ return (4, $sql_statement);
+ }
+
+ } else {
+ # entry already exists, so update it
+ my @update_l;
+ while( my ($pram, $val) = each %{$arg} ) {
+ if( $pram eq 'table' ) { next; }
+ if( $pram eq 'primkey' ) { next; }
+ push(@update_l, "$pram='$val'");
+ }
+ my $update_str= join(", ", @update_l);
+ $update_str= " SET $update_str";
-sub del_dbentry {
- my $obj = shift;
- my $arg = shift;
+ my $sql_statement= "UPDATE $table $update_str $prim_statement";
+ my $db_res = &update_dbentry($self, $sql_statement );
- # check completeness of function parameter
- # extract table statement from arg hash
- my $table = $arg->{table};
- if (not defined $table) {
- return 1;
- } else {
- delete $arg->{table};
}
- # collect select statements
- my @del_list;
- while (my ($pram, $val) = each %{$arg}) {
- if ( $pram eq 'timestamp' ) {
- push(@del_list, "$pram < '$val'");
- } else {
- push(@del_list, "$pram = '$val'");
- }
- }
+ return 0;
+}
- my $where_statement;
- if( not @del_list ) {
- $where_statement = "";
- } else {
- $where_statement = "WHERE ".join(' AND ', @del_list);
- }
+sub update_dbentry {
+ my ($self, $sql)= @_;
+ my $db_answer= &exec_statement($self, $sql);
+ return $db_answer;
+}
- my $sql_statement = "DELETE FROM $table $where_statement";
- my $db_res = $obj->{dbh}->do($sql_statement);
-
+
+sub del_dbentry {
+ my ($self, $sql)= @_;;
+ my $db_res= &exec_statement($self, $sql);
return $db_res;
}
sub get_table_columns {
- my $obj = shift;
+ my $self = shift;
my $table = shift;
-
- my @columns;
- my @res = @{$obj->{dbh}->selectall_arrayref("pragma table_info('$table')")};
- foreach my $column (@res) {
- push(@columns, @$column[1]);
- }
-
- return \@columns;
-}
-
-sub select_dbentry {
- my $obj = shift;
- my $arg = shift;
-
- # check completeness of function parameter
- # extract table statement from arg hash
- my $table = $arg->{table};
- if (not defined $table) {
- return 1;
+ my @column_names;
+
+ if(exists $col_names->{$table}) {
+ @column_names = @{$col_names->{$table}};
} else {
- delete $arg->{table};
- }
+ &create_lock($self,'get_table_columns');
+ my @res = @{$self->{dbh}->selectall_arrayref("pragma table_info('$table')")};
+ &remove_lock($self,'get_table_columns');
- # collect select statements
- my @select_list;
- my $sql_statement;
- while (my ($pram, $val) = each %{$arg}) {
- if ( $pram eq 'timestamp' ) {
- push(@select_list, "$pram < '$val'");
- } else {
- push(@select_list, "$pram = '$val'");
+ foreach my $column (@res) {
+ push(@column_names, @$column[1]);
}
}
+ return \@column_names;
+
+}
- if (@select_list == 0) {
- $sql_statement = "SELECT ROWID, * FROM '$table'";
- } else {
- $sql_statement = "SELECT ROWID, * FROM '$table' WHERE ".join(' AND ', @select_list);
- }
- # query db
- my $query_answer = $obj->{dbh}->selectall_arrayref($sql_statement);
+sub select_dbentry {
+ my ($self, $sql)= @_;
+ my $error= 0;
+ my $answer= {};
+
+ my $db_answer= &exec_statement($self, $sql);
# fetch column list of db and create a hash with column_name->column_value of the select query
- my $column_list = &get_table_columns($obj, $table);
+ $sql =~ /FROM ([\S]*?)( |$)/g;
+ my $table = $1;
+ my $column_list = &get_table_columns($self, $table);
my $list_len = @{ $column_list } ;
- my $answer = {};
my $hit_counter = 0;
-
-
- foreach my $hit ( @{ $query_answer }) {
+ foreach my $hit ( @{ $db_answer }) {
$hit_counter++;
- $answer->{ $hit_counter }->{ 'ROWID' } = shift @{ $hit };
for ( my $i = 0; $i < $list_len; $i++) {
$answer->{ $hit_counter }->{ @{ $column_list }[$i] } = @{ $hit }[$i];
}
}
+
return $answer;
}
sub show_table {
- my $obj = shift;
+ my $self = shift;
my $table_name = shift;
- my @res = @{$obj->{dbh}->selectall_arrayref( "SELECT ROWID, * FROM $table_name")};
+
+ my $sql_statement= "SELECT * FROM $table_name ORDER BY timestamp";
+ my $res= &exec_statement($self, $sql_statement);
+
my @answer;
- foreach my $hit (@res) {
+ foreach my $hit (@{$res}) {
push(@answer, "hit: ".join(', ', @{$hit}));
}
return join("\n", @answer);
sub exec_statement {
- my $obj = shift;
+ my $self = shift;
my $sql_statement = shift;
- my @res = @{$obj->{dbh}->selectall_arrayref($sql_statement)};
- return \@res;
+
+ &create_lock($self,'exec_statement');
+ my @db_answer = @{$self->{dbh}->selectall_arrayref($sql_statement)};
+ &remove_lock($self, 'exec_statement');
+
+ return \@db_answer;
+}
+
+
+sub exec_statementlist {
+ my $self = shift;
+ my $sql_list = shift;
+ my @db_answer;
+
+ &create_lock($self,'exec_statement');
+ foreach my $sql (@$sql_list) {
+ @db_answer = @{$self->{dbh}->selectall_arrayref($sql)};
+ }
+ &remove_lock($self, 'exec_statement');
+
+ return \@db_answer;
+}
+
+sub count_dbentries {
+ my ($self, $table)= @_;
+ my $error= 0;
+ my $answer= -1;
+
+ my $sql_statement= "SELECT * FROM $table";
+ my $db_answer= &select_dbentry($self, $sql_statement);
+
+ my $count = keys(%{$db_answer});
+ return $count;
}
+
+
+sub move_table {
+ my ($self, $from, $to) = @_;
+
+ my $sql_statement_drop = "DROP TABLE IF EXISTS $to";
+ my $sql_statement_alter = "ALTER TABLE $from RENAME TO $to";
+ &create_lock($self,'move_table');
+ my $db_res = $self->{dbh}->do($sql_statement_drop);
+ $db_res = $self->{dbh}->do($sql_statement_alter);
+ &remove_lock($self,'move_table');
+
+ return;
+}
+
+
1;