1 package GOSA::DBsqlite;
4 use strict;
5 use warnings;
6 use DBI;
7 use Data::Dumper;
8 use GOSA::GosaSupportDaemon;
9 use Time::HiRes qw(usleep);
12 my $col_names = {};
14 sub new {
15 my $class = shift;
16 my $db_name = shift;
18 my $lock = $db_name.".si.lock";
19 # delete existing lock - instance should be running only once
20 if(stat($lock)) {
21 &main::daemon_log("DEBUG: Removed existing lock $lock.", 7);
22 unlink($lock);
23 }
24 my $self = {dbh=>undef,db_name=>undef,db_lock=>undef,db_lock_handle=>undef};
25 my $dbh = DBI->connect("dbi:SQLite:dbname=$db_name", "", "", {RaiseError => 1, AutoCommit => 1});
26 $self->{dbh} = $dbh;
27 $self->{db_name} = $db_name;
28 $self->{db_lock} = $lock;
29 bless($self,$class);
31 return($self);
32 }
35 sub create_table {
36 my $self = shift;
37 my $table_name = shift;
38 my $col_names_ref = shift;
39 my @col_names;
40 foreach my $col_name (@$col_names_ref) {
41 my @t = split(" ", $col_name);
42 $col_name = $t[0];
43 push(@col_names, $col_name);
44 }
46 $col_names->{ $table_name } = $col_names_ref;
47 my $col_names_string = join("', '", @col_names);
48 my $sql_statement = "CREATE TABLE IF NOT EXISTS $table_name ( '$col_names_string' )";
49 eval {
50 my $res = $self->{dbh}->do($sql_statement);
51 };
52 if($@) {
53 $self->{dbh}->do("ANALYZE");
54 }
55 eval {
56 my $res = $self->{dbh}->do($sql_statement);
57 };
58 if($@) {
59 &main::daemon_log("ERROR: $sql_statement failed with $@", 1);
60 }
62 return 0;
63 }
66 sub add_dbentry {
67 my $self = shift;
68 my $arg = shift;
69 my $res = 0; # default value
71 # if dbh not specified, return errorflag 1
72 my $table = $arg->{table};
73 if( not defined $table ) {
74 return 1 ;
75 }
77 # if timestamp is not provided, add timestamp
78 if( not exists $arg->{timestamp} ) {
79 $arg->{timestamp} = &get_time;
80 }
82 # check primkey and run insert or update
83 my $primkeys = $arg->{'primkey'};
84 my $prim_statement="";
85 if( 0 != @$primkeys ) { # more than one primkey exist in list
86 my @prim_list;
87 foreach my $primkey (@$primkeys) {
88 if( not exists $arg->{$primkey} ) {
89 return (3, "primkey '$primkey' has no value for add_dbentry");
90 }
91 push(@prim_list, "$primkey='".$arg->{$primkey}."'");
92 }
93 $prim_statement = "WHERE ".join(" AND ", @prim_list);
95 # check wether primkey is unique in table, otherwise return errorflag
96 my $sql_statement = "SELECT * FROM $table $prim_statement";
97 eval {
98 $res = @{ $self->{dbh}->selectall_arrayref($sql_statement) };
99 };
100 if($@) {
101 $self->{dbh}->do("ANALYZE");
102 eval {
103 $res = @{ $self->{dbh}->selectall_arrayref($sql_statement) };
104 };
105 if($@) {
106 &main::daemon_log("ERROR: $sql_statement failed with $@", 1);
107 }
108 }
110 }
112 # primekey is unique or no primkey specified -> run insert
113 if ($res == 0) {
114 # fetch column names of table
115 my $col_names = &get_table_columns($self, $table);
117 # assign values to column name variables
118 my @col_list;
119 my @val_list;
120 foreach my $col_name (@{$col_names}) {
121 # use function parameter for column values
122 if (exists $arg->{$col_name}) {
123 push(@col_list, "'".$col_name."'");
124 push(@val_list, "'".$arg->{$col_name}."'");
125 }
126 }
128 my $sql_statement = "INSERT INTO $table (".join(", ", @col_list).") VALUES (".join(", ", @val_list).")";
129 &main::daemon_log("DEBUG: $sql_statement", 7);
130 my $db_res;
131 eval {
132 $db_res = $self->{dbh}->do($sql_statement);
133 };
134 if($@) {
135 $self->{dbh}->do("ANALYZE");
136 eval {
137 $db_res = $self->{dbh}->do($sql_statement);
138 };
139 if($@) {
140 &main::daemon_log("ERROR: $sql_statement failed with $@", 1);
141 }
142 }
144 if( $db_res != 1 ) {
145 return (4, $sql_statement);
146 }
148 # entry already exists -> run update
149 } else {
150 my @update_l;
151 while( my ($pram, $val) = each %{$arg} ) {
152 if( $pram eq 'table' ) { next; }
153 if( $pram eq 'primkey' ) { next; }
154 push(@update_l, "$pram='$val'");
155 }
156 my $update_str= join(", ", @update_l);
157 $update_str= " SET $update_str";
159 my $sql_statement= "UPDATE $table $update_str $prim_statement";
160 my $db_res = &update_dbentry($self, $sql_statement );
161 }
163 return 0;
164 }
166 sub update_dbentry {
167 my ($self, $sql)= @_;
168 my $db_answer= &exec_statement($self, $sql);
169 return $db_answer;
170 }
173 sub del_dbentry {
174 my ($self, $sql)= @_;;
175 my $db_res= &exec_statement($self, $sql);
176 return $db_res;
177 }
180 sub get_table_columns {
181 my $self = shift;
182 my $table = shift;
183 my @column_names;
185 if(exists $col_names->{$table}) {
186 @column_names = @{$col_names->{$table}};
187 } else {
188 my @res;
189 eval {
190 @res = @{$self->{dbh}->selectall_arrayref("pragma table_info('$table')")};
191 };
192 if($@) {
193 $self->{dbh}->do("ANALYZE");
194 eval {
195 @res = @{$self->{dbh}->selectall_arrayref("pragma table_info('$table')")};
196 };
197 if($@) {
198 &main::daemon_log("ERROR: pragma table_info('$table') failed with $@", 1);
199 }
200 }
202 foreach my $column (@res) {
203 push(@column_names, @$column[1]);
204 }
205 }
206 return \@column_names;
208 }
211 sub select_dbentry {
212 my ($self, $sql)= @_;
213 my $error= 0;
214 my $answer= {};
215 my $db_answer= &exec_statement($self, $sql);
216 my @column_list;
218 # fetch column list of db and create a hash with column_name->column_value of the select query
219 $sql =~ /SELECT ([\S\s]*?) FROM ([\S]*?)( |$)/g;
220 my $selected_cols = $1;
221 my $table = $2;
223 # all columns are used for creating answer
224 if ($selected_cols eq '*') {
225 @column_list = @{ &get_table_columns($self, $table) };
227 # specific columns are used for creating answer
228 } else {
229 # remove all blanks and split string to list of column names
230 $selected_cols =~ s/ //g;
231 @column_list = split(/,/, $selected_cols);
232 }
234 # create answer
235 my $hit_counter = 0;
236 my $list_len = @column_list;
237 foreach my $hit ( @{$db_answer} ){
238 $hit_counter++;
239 for ( my $i = 0; $i < $list_len; $i++) {
240 $answer->{ $hit_counter }->{ $column_list[$i] } = @{ $hit }[$i];
241 }
242 }
244 return $answer;
245 }
248 sub show_table {
249 my $self = shift;
250 my $table_name = shift;
252 my $sql_statement= "SELECT * FROM $table_name ORDER BY timestamp";
253 my $res= &exec_statement($self, $sql_statement);
254 my @answer;
255 foreach my $hit (@{$res}) {
256 push(@answer, "hit: ".join(', ', @{$hit}));
257 }
259 return join("\n", @answer);
260 }
263 sub exec_statement {
264 my $self = shift;
265 my $sql_statement = shift;
266 my @db_answer;
268 eval {
269 @db_answer = @{$self->{dbh}->selectall_arrayref($sql_statement)};
270 };
271 if($@) {
272 $self->{dbh}->do("ANALYZE");
273 eval {
274 @db_answer = @{$self->{dbh}->selectall_arrayref($sql_statement)};
275 };
276 if($@) {
277 &main::daemon_log("ERROR: $sql_statement failed with $@", 1);
278 }
279 }
281 return \@db_answer;
282 }
285 sub exec_statementlist {
286 my $self = shift;
287 my $sql_list = shift;
288 my @db_answer;
290 $self->{dbh}->do("ANALYZE");
291 foreach my $sql (@$sql_list) {
292 eval {
293 push @db_answer, @{$self->{dbh}->selectall_arrayref($sql)};
294 };
295 if($@) {
296 $self->{dbh}->do("ANALYZE");
297 eval {
298 push @db_answer, @{$self->{dbh}->selectall_arrayref($sql)};
299 };
300 if($@) {
301 &main::daemon_log("ERROR: $sql failed with $@", 1);
302 }
303 }
304 }
306 return \@db_answer;
307 }
309 sub count_dbentries {
310 my ($self, $table)= @_;
311 my $error= 0;
312 my $answer= -1;
314 my $sql_statement= "SELECT * FROM $table";
315 my $db_answer= &select_dbentry($self, $sql_statement);
317 my $count = keys(%{$db_answer});
318 return $count;
319 }
322 sub move_table {
323 my ($self, $from, $to) = @_;
325 my $sql_statement_drop = "DROP TABLE IF EXISTS $to";
326 my $sql_statement_alter = "ALTER TABLE $from RENAME TO $to";
328 eval {
329 $self->{dbh}->do($sql_statement_drop);
330 };
331 if($@) {
332 $self->{dbh}->do("ANALYZE");
333 eval {
334 $self->{dbh}->do($sql_statement_drop);
335 };
336 if($@) {
337 &main::daemon_log("ERROR: $sql_statement_drop failed with $@", 1);
338 }
339 }
341 eval {
342 $self->{dbh}->do($sql_statement_alter);
343 };
344 if($@) {
345 $self->{dbh}->do("ANALYZE");
346 eval {
347 $self->{dbh}->do($sql_statement_alter);
348 };
349 if($@) {
350 &main::daemon_log("ERROR: $sql_statement_alter failed with $@", 1);
351 }
352 }
354 return;
355 }
358 1;