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($primkey eq 'id') {
89 # if primkey is id, fetch max id from table and give new job id= max(id)+1
90 my $sql_statement = "SELECT MAX(CAST(id AS INTEGER)) FROM $table";
91 my $max_id;
92 eval {
93 $max_id = @{ @{ $self->{dbh}->selectall_arrayref($sql_statement) }[0] }[0];
94 };
95 if($@) {
96 $self->{dbh}->do("ANALYZE");
97 eval {
98 $max_id = @{ @{ $self->{dbh}->selectall_arrayref($sql_statement) }[0] }[0];
99 };
100 if($@) {
101 &main::daemon_log("ERROR: $sql_statement failed with $@", 1);
102 }
103 }
104 my $id;
105 if( defined $max_id) {
106 $id = $max_id + 1;
107 } else {
108 $id = 1;
109 }
110 $arg->{id} = $id;
111 }
112 if( not exists $arg->{$primkey} ) {
113 return (3, "primkey '$primkey' has no value for add_dbentry");
114 }
115 push(@prim_list, "$primkey='".$arg->{$primkey}."'");
116 }
117 $prim_statement = "WHERE ".join(" AND ", @prim_list);
119 # check wether primkey is unique in table, otherwise return errorflag
120 my $sql_statement = "SELECT * FROM $table $prim_statement";
121 my $res;
122 eval {
123 $res = @{ $self->{dbh}->selectall_arrayref($sql_statement) };
124 };
125 if($@) {
126 $self->{dbh}->do("ANALYZE");
127 eval {
128 $res = @{ $self->{dbh}->selectall_arrayref($sql_statement) };
129 };
130 if($@) {
131 &main::daemon_log("ERROR: $sql_statement failed with $@", 1);
132 }
133 }
135 # primekey is unique or no primkey specified -> run insert
136 if ($res == 0) {
137 # fetch column names of table
138 my $col_names = &get_table_columns($self, $table);
140 # assign values to column name variables
141 my @col_list;
142 my @val_list;
143 foreach my $col_name (@{$col_names}) {
144 # use function parameter for column values
145 if (exists $arg->{$col_name}) {
146 push(@col_list, "'".$col_name."'");
147 push(@val_list, "'".$arg->{$col_name}."'");
148 }
149 }
151 my $sql_statement = "INSERT INTO $table (".join(", ", @col_list).") VALUES ('".join("', '", @val_list)."')";
152 &main::daemon_log("DEBUG: $sql_statement", 7);
153 my $db_res;
154 eval {
155 $db_res = $self->{dbh}->do($sql_statement);
156 };
157 if($@) {
158 $self->{dbh}->do("ANALYZE");
159 eval {
160 $db_res = $self->{dbh}->do($sql_statement);
161 };
162 if($@) {
163 &main::daemon_log("ERROR: $sql_statement failed with $@", 1);
164 }
165 }
167 if( $db_res != 1 ) {
168 return (4, $sql_statement);
169 }
171 # entry already exists -> run update
172 } else {
173 my @update_l;
174 while( my ($pram, $val) = each %{$arg} ) {
175 if( $pram eq 'table' ) { next; }
176 if( $pram eq 'primkey' ) { next; }
177 push(@update_l, "$pram='$val'");
178 }
179 my $update_str= join(", ", @update_l);
180 $update_str= " SET $update_str";
182 my $sql_statement= "UPDATE $table $update_str $prim_statement";
183 my $db_res = &update_dbentry($self, $sql_statement );
184 }
186 return 0;
187 }
189 sub update_dbentry {
190 my ($self, $sql)= @_;
191 my $db_answer= &exec_statement($self, $sql);
192 return $db_answer;
193 }
196 sub del_dbentry {
197 my ($self, $sql)= @_;;
198 my $db_res= &exec_statement($self, $sql);
199 return $db_res;
200 }
203 sub get_table_columns {
204 my $self = shift;
205 my $table = shift;
206 my @column_names;
208 if(exists $col_names->{$table}) {
209 @column_names = @{$col_names->{$table}};
210 } else {
211 my @res;
212 eval {
213 @res = @{$self->{dbh}->selectall_arrayref("pragma table_info('$table')")};
214 };
215 if($@) {
216 $self->{dbh}->do("ANALYZE");
217 eval {
218 @res = @{$self->{dbh}->selectall_arrayref("pragma table_info('$table')")};
219 };
220 if($@) {
221 &main::daemon_log("ERROR: pragma table_info('$table') failed with $@", 1);
222 }
223 }
225 foreach my $column (@res) {
226 push(@column_names, @$column[1]);
227 }
228 }
229 return \@column_names;
231 }
234 sub select_dbentry {
235 my ($self, $sql)= @_;
236 my $error= 0;
237 my $answer= {};
238 my $db_answer= &exec_statement($self, $sql);
239 my @column_list;
241 # fetch column list of db and create a hash with column_name->column_value of the select query
242 $sql =~ /SELECT ([\S\s]*?) FROM ([\S]*?)( |$)/g;
243 my $selected_cols = $1;
244 my $table = $2;
246 # all columns are used for creating answer
247 if ($selected_cols eq '*') {
248 @column_list = @{ &get_table_columns($self, $table) };
250 # specific columns are used for creating answer
251 } else {
252 # remove all blanks and split string to list of column names
253 $selected_cols =~ s/ //g;
254 @column_list = split(/,/, $selected_cols);
255 }
257 # create answer
258 my $hit_counter = 0;
259 my $list_len = @column_list;
260 foreach my $hit ( @{$db_answer} ){
261 $hit_counter++;
262 for ( my $i = 0; $i < $list_len; $i++) {
263 $answer->{ $hit_counter }->{ $column_list[$i] } = @{ $hit }[$i];
264 }
265 }
267 return $answer;
268 }
271 sub show_table {
272 my $self = shift;
273 my $table_name = shift;
275 my $sql_statement= "SELECT * FROM $table_name ORDER BY timestamp";
276 my $res= &exec_statement($self, $sql_statement);
277 my @answer;
278 foreach my $hit (@{$res}) {
279 push(@answer, "hit: ".join(', ', @{$hit}));
280 }
282 return join("\n", @answer);
283 }
286 sub exec_statement {
287 my $self = shift;
288 my $sql_statement = shift;
289 my @db_answer;
291 eval {
292 @db_answer = @{$self->{dbh}->selectall_arrayref($sql_statement)};
293 };
294 if($@) {
295 $self->{dbh}->do("ANALYZE");
296 eval {
297 @db_answer = @{$self->{dbh}->selectall_arrayref($sql_statement)};
298 };
299 if($@) {
300 &main::daemon_log("ERROR: $sql_statement failed with $@", 1);
301 }
302 }
304 return \@db_answer;
305 }
308 sub exec_statementlist {
309 my $self = shift;
310 my $sql_list = shift;
311 my @db_answer;
313 $self->{dbh}->do("ANALYZE");
314 foreach my $sql (@$sql_list) {
315 eval {
316 push @db_answer, @{$self->{dbh}->selectall_arrayref($sql)};
317 };
318 if($@) {
319 $self->{dbh}->do("ANALYZE");
320 eval {
321 push @db_answer, @{$self->{dbh}->selectall_arrayref($sql)};
322 };
323 if($@) {
324 &main::daemon_log("ERROR: $sql failed with $@", 1);
325 }
326 }
327 }
329 return \@db_answer;
330 }
332 sub count_dbentries {
333 my ($self, $table)= @_;
334 my $error= 0;
335 my $answer= -1;
337 my $sql_statement= "SELECT * FROM $table";
338 my $db_answer= &select_dbentry($self, $sql_statement);
340 my $count = keys(%{$db_answer});
341 return $count;
342 }
345 sub move_table {
346 my ($self, $from, $to) = @_;
348 my $sql_statement_drop = "DROP TABLE IF EXISTS $to";
349 my $sql_statement_alter = "ALTER TABLE $from RENAME TO $to";
351 eval {
352 $self->{dbh}->do($sql_statement_drop);
353 };
354 if($@) {
355 $self->{dbh}->do("ANALYZE");
356 eval {
357 $self->{dbh}->do($sql_statement_drop);
358 };
359 if($@) {
360 &main::daemon_log("ERROR: $sql_statement_drop failed with $@", 1);
361 }
362 }
364 eval {
365 $self->{dbh}->do($sql_statement_alter);
366 };
367 if($@) {
368 $self->{dbh}->do("ANALYZE");
369 eval {
370 $self->{dbh}->do($sql_statement_alter);
371 };
372 if($@) {
373 &main::daemon_log("ERROR: $sql_statement_alter failed with $@", 1);
374 }
375 }
377 return;
378 }
381 1;