/[webpac2]/trunk/lib/WebPAC/Output/Estraier.pm
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revision 113 by dpavlin, Wed Nov 23 00:14:05 2005 UTC revision 255 by dpavlin, Fri Dec 16 01:04:20 2005 UTC
# Line 8  use base qw/WebPAC::Common/; Line 8  use base qw/WebPAC::Common/;
8  use HyperEstraier;  use HyperEstraier;
9  use Text::Iconv;  use Text::Iconv;
10  use Data::Dumper;  use Data::Dumper;
11    use LWP;
12    use URI::Escape;
13    
14  =head1 NAME  =head1 NAME
15    
# Line 15  WebPAC::Output::Estraier - Create Hyper Line 17  WebPAC::Output::Estraier - Create Hyper
17    
18  =head1 VERSION  =head1 VERSION
19    
20  Version 0.01  Version 0.05
21    
22  =cut  =cut
23    
24  our $VERSION = '0.01';  our $VERSION = '0.05';
25    
26  =head1 SYNOPSIS  =head1 SYNOPSIS
27    
# Line 33  type C<search>. Line 35  type C<search>.
35  Connect to Hyper Estraier index using HTTP  Connect to Hyper Estraier index using HTTP
36    
37   my $est = new WebPAC::Output::Estraier(   my $est = new WebPAC::Output::Estraier(
38          url => 'http://localhost:1978/node/webpac2',          masterurl => 'http://localhost:1978/',
39          user => 'admin',          user => 'admin',
40          passwd => 'admin',          passwd => 'admin',
41          database => 'demo',          database => 'demo',
# Line 44  Options are: Line 46  Options are:
46    
47  =over 4  =over 4
48    
49  =item url  =item masterurl
50    
51  URI to C<estmaster> node  URI to C<estmaster> node
52    
# Line 79  sub new { Line 81  sub new {
81    
82          my $log = $self->_get_logger;          my $log = $self->_get_logger;
83    
84          foreach my $p (qw/url user passwd/) {          #$log->debug("self: ", sub { Dumper($self) });
85    
86            foreach my $p (qw/masterurl user passwd database/) {
87                  $log->logdie("need $p") unless ($self->{$p});                  $log->logdie("need $p") unless ($self->{$p});
88          }          }
89    
90          $log->info("opening Hyper Estraier index $self->{'url'}");          my $url = $self->{masterurl} . '/node/' . $self->{database};
91            $self->{url} = $url;
92    
93            $log->info("opening Hyper Estraier index $self->{url}");
94    
95            my $nodes = $self->master( action => 'nodelist' );
96    
97            $log->debug("nodes found: $nodes");
98    
99            if ($nodes !~ m/^$self->{database}\t/sm) {
100                    $log->info("creating index $url");
101                    $self->master(
102                            action => 'nodeadd',
103                            name => $self->{database},
104                            label => "WebPAC $self->{database}",
105                    ) || $log->logdie("can't create Hyper Estraier node $self->{database}");
106            }
107    
108          $self->{'db'} = HyperEstraier::Node->new($self->{'url'});          $self->{'db'} = HyperEstraier::Node->new($self->{url});
109          $self->{'db'}->set_auth($self->{'user'}, $self->{'passwd'});          $self->{'db'}->set_auth($self->{'user'}, $self->{passwd});
110    
111          my $encoding = $self->{'encoding'} || 'ISO-8859-2';          my $encoding = $self->{'encoding'} || 'ISO-8859-2';
112          $log->info("using encoding $encoding");          $log->info("using encoding $encoding");
# Line 106  Adds one entry to database. Line 126  Adds one entry to database.
126          id => 42,          id => 42,
127          ds => $ds,          ds => $ds,
128          type => 'display',          type => 'display',
         url_prefix => 'database name',  
129          text => 'optional text from which snippet is created',          text => 'optional text from which snippet is created',
130    );    );
131    
132  This function will create  entries in index using following URI format:  This function will create  entries in index using following URI format:
133    
134    C<file:///database%20name/000>    C<file:///type/database%20name/000>
135    
136  Each tag in C<data_structure> with specified C<type> will create one  Each tag in C<data_structure> with specified C<type> will create one
137  attribute and corresponding hidden text (used for search).  attribute and corresponding hidden text (used for search).
# Line 134  sub add { Line 153  sub add {
153          }          }
154    
155          my $type = $args->{'type'};          my $type = $args->{'type'};
156          my $mfn = $args->{'id'};          my $id = $args->{'id'};
157    
158          my $uri = "file:///$type/$database/$mfn";          my $uri = "file:///$type/$database/$id";
159          $log->debug("creating $uri");          $log->debug("creating $uri");
160    
161          my $doc = HyperEstraier::Document->new;          my $doc = HyperEstraier::Document->new;
# Line 174  sub add { Line 193  sub add {
193          }          }
194    
195          $log->debug("adding ", sub { $doc->dump_draft } );          $log->debug("adding ", sub { $doc->dump_draft } );
196          $self->{'db'}->put_doc($doc) || $log->logdie("can't add document $uri to index");          $self->{'db'}->put_doc($doc) || $log->logdie("can't add document $uri to node " . $self->{url} . " status: " . $self->{db}->status());
197    
198          return 1;          return 1;
199  }  }
200    
201    #
202    # REST parametars validation data
203    #
204    
205    my $estraier_rest = {
206            master => {
207                    userdel => [ qw/name/ ],
208                    nodelist => [],
209                    nodeadd => [ qw/name label/ ],
210                    nodedel => [ qw/name/ ],
211            },
212            node => {
213                    _set_link => [ qw/url label credit/ ],
214            },
215    };
216    
217    =head2 master
218    
219    Issue administrative commands to C<estmaster> process and receive response
220    as array of lines
221    
222      my $nodelist = $est->master( action => 'nodelist' );
223    
224    =cut
225    
226    sub master {
227            my $self = shift;
228    
229            my $args = {@_};
230            my $log = $self->_get_logger;
231    
232            my $action = $args->{action} || $log->logconfess("no action specified");
233    
234            $log->logdie("action '$action' isn't supported") unless ($estraier_rest->{master}->{$action});
235    
236            $log->debug("master action: $action");
237    
238            return $self->estcall(
239                    validate => 'master',
240                    rest_url => $self->{masterurl} . '/master?action=' . $action ,
241                    action => $action,
242            );
243    }
244    
245    =head2 add_link
246    
247      $est->add_link(
248            from => 'ps',
249            to => 'webpac2',
250            credit => 10000,
251      );
252    
253    =cut
254    
255    sub add_link {
256            my $self = shift;
257    
258            my $args = {@_};
259            my $log = $self->_get_logger;
260    
261            my @labels = $self->master( action => 'nodelist' );
262    
263            $log->debug("got labels: ", join("|", @labels));
264    
265            @labels = grep(/^$args->{to}/, @labels);
266    
267            my (undef,$label) = split(/\t/, shift @labels);
268    
269            if (! $label) {
270                    $log->warn("can't find label for $args->{to}, skipping link creaton");
271                    return;
272            }
273    
274            $log->debug("using label $label for $args->{to}");
275    
276            return $self->estcall(
277                    validate => 'node',
278                    action => '_set_link',
279                    rest_url => $self->{masterurl} . '/node/' . $args->{from} . '/_set_link' ,
280                    url => $self->{masterurl} . '/node/' . $args->{to},
281                    label => $label,
282                    credit => $args->{credit},
283            );
284    }
285    
286    =head2 estcall
287    
288    Workhourse which does actual calls to Hyper Estraier
289    
290      $self->estcall(
291            rest_url => '/master?action=' . $action,
292            validate => 'master',
293            # ...
294      );
295    
296    C<rest_url> is relative URL to C<estmaster> and C<validate> is entry into
297    internal hash which will check if all parametars are available before
298    calling function.
299    
300    =cut
301    
302    sub estcall {
303            my $self = shift;
304            my $args = {@_};
305            my $log = $self->_get_logger;
306    
307            $log->debug("estcall: ",Dumper($args));
308    
309            foreach my $p (qw/rest_url validate action/) {
310                    $log->die("ectcall needs $p parametar") unless ($args->{$p});
311            }
312    
313            my $url = $args->{rest_url};
314            my $del = '?';
315            $del = '&' if ($url =~ m#\?#);
316    
317            my $url_args;
318    
319            foreach my $arg (@{ $estraier_rest->{ $args->{validate} }->{ $args->{action} } }) {
320                    $log->logdie("missing parametar $arg for action $args->{action}") unless ($args->{$arg});
321                    $url_args .= $del . $arg . '=' . uri_escape( $args->{$arg} );
322                    $del = '&';
323            }
324    
325            $url_args =~ s#^\&#?# if ($url =~ m#\?#);
326            $url .= $url_args;
327    
328            $log->debug("calling $url");
329    
330            my $res = $self->est_ua()->get($url);
331    
332            if ($res->is_success) {
333                    #$log->debug( $res->content );
334                    return split(/\n/, $res->content) if wantarray;
335                    return $res->content || 0E0;
336            } else {
337                    $log->warn("unable to call $url: " . $res->status_line);
338                    return;
339            }
340    
341    }
342    
343    =head2 est_ua
344    
345    This is helper function to create C<LWP::UserAgent> object with Super User
346    priviledges
347    
348      my $ua = $self->est_ua( user => 'admin', passwd => 'admin' );
349    
350    =cut
351    
352    sub est_ua {
353            my $self = shift;
354    
355            return $self->{_master_ua} if ($self->{_master_ua});
356    
357            $self->{_master_ua} = LWP::UserAgent->new( ) || sub {
358                    my $log = $self->_get_logger;
359                    $log->logdie("can't create LWP::UserAgent: $!");
360            };
361    
362            $self->{_master_ua}->credentials('localhost:1978','Super User', $self->{user} => $self->{passwd});
363    
364            return $self->{_master_ua};
365    }
366    
367  =head1 AUTHOR  =head1 AUTHOR
368    
369  Dobrica Pavlinusic, C<< <dpavlin@rot13.org> >>  Dobrica Pavlinusic, C<< <dpavlin@rot13.org> >>
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