source: gs3-extensions/solr/trunk/src/perllib/solrserver.pm@ 24486

Last change on this file since 24486 was 24486, checked in by davidb, 12 years ago

Tidy up (pass 2)
File size: 9.9 KB
Line 
1###########################################################################
2#
3# solrserver.pm -- class for starting and stopping the Solr/jetty server
4# A component of the Greenstone digital library software
5# from the New Zealand Digital Library Project at the
6# University of Waikato, New Zealand.
7#
8# Copyright (C) 1999 New Zealand Digital Library Project
9#
10# This program is free software; you can redistribute it and/or modify
11# it under the terms of the GNU General Public License as published by
12# the Free Software Foundation; either version 2 of the License, or
13# (at your option) any later version.
14#
15# This program is distributed in the hope that it will be useful,
16# but WITHOUT ANY WARRANTY; without even the implied warranty of
17# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18# GNU General Public License for more details.
19#
20# You should have received a copy of the GNU General Public License
21# along with this program; if not, write to the Free Software
22# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
23#
24###########################################################################
25
26
27package solrserver;
28
29use strict;
30#no strict 'refs';
31
32use solrutil;
33
34sub new {
35 my $class = shift(@_);
36
37 my $self = { 'jetty_stop_key' => "greenstone-solr" };
38
39 my $search_path = &solrutil::get_search_path();
40
41 my $server_jar = &util::filename_cat("lib","java","solr-jetty-server.jar");
42 my $full_server_jar = solrutil::locate_file($search_path,$server_jar);
43 $self->{'full_server_jar'} = $full_server_jar;
44
45 $self->{'jetty_explicitly_started'} = undef;
46
47 my $jetty_server_port = $ENV{'SOLR_JETTY_PORT'};
48 my $base_url = "http://localhost:$jetty_server_port/solr/";
49 my $admin_url = "http://localhost:$jetty_server_port/solr/admin/cores";
50
51 $self->{'base-url'} = $base_url;
52 $self->{'admin-url'} = $admin_url;
53
54 return bless $self, $class;
55}
56
57
58
59sub _wget_service
60{
61 my $self = shift (@_);
62 my ($output_format,$url,$cgi_get_args) = @_;
63
64 my $full_url = $url;
65
66 $url .= "?$cgi_get_args" if (defined $cgi_get_args);
67
68 my $cmd = "wget -O - \"$url\" 2>&1";
69
70 my $preamble_output = "";
71 my $xml_output = "";
72 my $error_output = undef;
73
74 my $in_preamble = ($output_format eq "xml") ? 1 : 0;
75
76 if (open(WIN,"$cmd |")) {
77
78 my $line;
79 while (defined ($line=<WIN>)) {
80
81 if ($line =~ m/ERROR \d+:/) {
82 chomp $line;
83 $error_output = $line;
84 last;
85 }
86 elsif ($line =~ m/failed: Connection refused/) {
87 chomp $line;
88 $error_output = $line;
89 last;
90 }
91 elsif ($in_preamble) {
92 if ($line =~ m/<.*>/) {
93 $in_preamble = 0;
94 }
95 else {
96 $preamble_output .= $line;
97 }
98 }
99
100 if (! $in_preamble) {
101 $xml_output .= $line;
102 }
103 }
104 close(WIN);
105
106 }
107 else {
108 $error_output = "Error: failed to run $cmd\n";
109 $error_output .= " $!\n";
110 }
111
112 my $output = { 'preamble' => $preamble_output,
113 'output' => $xml_output,
114 'error' => $error_output };
115
116 return $output;
117}
118
119
120sub _base_service
121{
122 my $self = shift (@_);
123 my ($cgi_get_args) = @_;
124
125 my $base_url = $self->{'base-url'};
126
127 return $self->_wget_service("html",$base_url,$cgi_get_args);
128}
129
130sub _admin_service
131{
132 my $self = shift (@_);
133 my ($cgi_get_args) = @_;
134
135 my $admin_url = $self->{'admin-url'};
136
137 return $self->_wget_service("xml",$admin_url,$cgi_get_args);
138}
139
140
141sub server_running
142{
143 my $self = shift @_;
144
145 my $output = $self->_base_service();
146
147 my $have_error = defined $output->{'error'};
148
149 my $running = !$have_error;
150
151 return $running;
152}
153
154
155sub admin_ping_core
156{
157 my $self = shift @_;
158 my ($core) = @_;
159
160 my $cgi_get_args = "action=STATUS&core=$core";
161
162 my $ping_status = 1;
163
164 my $output = $self->_admin_service($cgi_get_args);
165
166 if (defined $output->{'error'}) {
167 # severe error, such as failing to connect to the server
168 $ping_status = 0;
169
170 my $url = $output->{'url'};
171 my $preamble = $output->{'preamble'};
172 my $error = $output->{'error'};
173
174 print STDERR "----\n";
175 print STDERR "Error: Failed to get XML response from:\n";
176 print STDERR " $url\n";
177 print STDERR "Output was:\n";
178 print STDERR $preamble if ($preamble ne "");
179 print STDERR "$error\n";
180 print STDERR "----\n";
181 }
182 else {
183
184 # If the collection doesn't exist yet, then there will be
185 # an empty element of the form:
186 # <lst name="collect-doc"/>
187 # where 'collect' is the actual name of the collection,
188 # such as demo
189
190 my $xml_output = $output->{'output'};
191
192 my $empty_element="<lst\\s+name=\"$core\"\\s*\\/>";
193
194 $ping_status = !($xml_output =~ m/$empty_element/s);
195 }
196
197 return $ping_status;
198}
199
200
201sub admin_reload_core
202{
203 my $self = shift @_;
204 my ($core) = @_;
205
206 my $cgi_get_args = "action=RELOAD&core=$core";
207
208 $self->_admin_service($cgi_get_args);
209}
210
211
212sub admin_create_core
213{
214 my $self = shift @_;
215 my ($core) = @_;
216
217 my ($ds_idx) = ($core =~ m/^.*-(.*)$/);
218
219 my $cgi_get_args = "action=CREATE&name=$core";
220
221 my $collect_home = $ENV{'GSDLCOLLECTDIR'};
222 my $etc_dirname = &util::filename_cat($collect_home,"etc");
223
224 my $build_dir = $self->{'build_dir'};
225 my $idx_dirname = &util::filename_cat($build_dir,$ds_idx);
226
227 $cgi_get_args .= "&instanceDir=$etc_dirname";
228 $cgi_get_args .= "&dataDir=$idx_dirname";
229
230 $self->_admin_service($cgi_get_args);
231}
232
233
234
235sub start
236{
237 my $self = shift @_;
238
239 my $solr_home = $ENV{'GEXT_SOLR'};
240 my $jetty_stop_port = $ENV{'JETTY_STOP_PORT'};
241 my $jetty_server_port = $ENV{'SOLR_JETTY_PORT'};
242
243 chdir($solr_home);
244
245 my $solr_etc = &util::filename_cat($solr_home,"etc");
246
247 my $server_props = "-DSTOP.PORT=$jetty_stop_port";
248 $server_props .= " -DSTOP.KEY=".$self->{'jetty_stop_key'};
249 $server_props .= " -Dsolr.solr.home=$solr_etc";
250
251 my $full_server_jar = $self->{'full_server_jar'};
252
253 my $server_java_cmd = "java $server_props -jar \"$full_server_jar\"";
254
255## print STDERR "**** server cmd start = $server_java_cmd\n";
256
257 my $server_status = "unknown";
258
259 if ($self->server_running()) {
260 $server_status = "already-running";
261 }
262 elsif (open(STARTIN,"$server_java_cmd 2>&1 |")) {
263
264 my $line;
265 while (defined($line=<STARTIN>)) {
266 # Scan through output until you see a line like:
267 # 2011-08-22 .. :INFO::Started SocketConnector@0.0.0.0:8983
268 # which signifies that the server has started up and is
269 # "ready and listening"
270
271 if (($line =~ m/^(WARN|ERROR|SEVERE):/)
272 || ($line =~ m/^[0-9 :-]*(WARN|ERROR|SEVERE)::/)) {
273 print "Jetty startup: $line";
274 }
275
276 if ($line =~ m/WARN::failed SocketConnector/) {
277 if ($line =~ m/Address already in use/) {
278 $server_status = "already-running";
279 }
280 else {
281 $server_status = "failed-to-start";
282 }
283 last;
284 }
285
286 if ($line =~ m/INFO::Started SocketConnector/) {
287 $server_status = "explicitly-started";
288 last;
289 }
290 }
291 }
292 else {
293 print STDERR "Error: failed to start solr-jetty-server\n";
294 print STDERR "$!\n";
295 print STDERR "Command attempted was:\n";
296 print STDERR " $server_java_cmd\n";
297 print STDERR "run from directory:\n";
298 print STDERR " $solr_home\n";
299 print STDERR "----\n";
300
301 exit -1;
302 }
303
304 if ($server_status eq "explicitly-started") {
305 $self->{'jetty_explicitly_started'} = 1;
306 print "Jetty server ready and listening for connections on port";
307 print " $jetty_server_port\n";
308
309 # now we know the server is ready to accept connections, fork a
310 # child process that continues to listen to the output and
311 # prints out any lines that are not INFO lines
312
313 if (fork()==0) {
314 # child process
315
316 my $line;
317 while (defined ($line = <STARTIN>)) {
318
319# if (($line =~ m/^(WARN|ERROR|SEVERE):/)
320# || ($line =~ m/^[0-9 :-]*(WARN|ERROR|SEVERE)::/)) {
321# print "Jetty $line";
322# }
323
324 # skip info lines
325 next if ($line =~ m/^INFO:/);
326 next if ($line =~ m/^[0-9 :-]*INFO::/);
327 next if ($line =~ m/^\d{2}\/\d{2}\/\d{4}\s+/);
328 next if ($line =~ m/^\d{4}-\d{2}-\d{2}\s+/);
329
330## next if ($line =~ m/^\s*\w+{.*}/);
331
332 # if here, then some non-trival message has been logged
333 print "Jetty/Solr processing: $line";
334 }
335 close(STARTIN);
336
337 # And now stop nicely
338 exit 0;
339 }
340 # otherwise let the parent continue on
341 }
342 elsif ($server_status eq "already-running") {
343 print STDERR "Using existing server detected on port $jetty_server_port\n";
344 $self->{'jetty_explicitly_started'} = 0;
345 }
346 elsif ($server_status eq "failed-to-start") {
347 print STDERR "Started Solr/Jetty web server on port $jetty_server_port";
348 print STDERR ", but encountered an initialization error\n";
349 exit -1;
350 }
351
352}
353
354sub explicitly_started
355{
356 my $self = shift @_;
357
358 return $self->{'jetty_explicitly_started'};
359}
360
361sub stop
362{
363 my $self = shift @_;
364 my ($options) = @_;
365
366 my $solr_home = $ENV{'GEXT_SOLR'};
367
368 chdir($solr_home);
369
370 # defaults
371 my $do_wait = 1;
372 my $output_verbosity = 1;
373
374 if (defined $options) {
375 if (defined $options->{'do_wait'}) {
376 $do_wait = $options->{'do_wait'};
377 }
378 if (defined $options->{'output_verbosity'}) {
379 $output_verbosity = $options->{'output_verbosity'};
380 }
381 }
382
383 my $full_server_jar = $self->{'full_server_jar'};
384 my $jetty_stop_port = $ENV{'JETTY_STOP_PORT'};
385
386 my $server_props = "-DSTOP.PORT=$jetty_stop_port";
387 $server_props .= " -DSTOP.KEY=".$self->{'jetty_stop_key'};
388 my $server_java_cmd = "java $server_props -jar \"$full_server_jar\" --stop";
389
390## print STDERR "**** java server stop cmd:\n $server_java_cmd\n";
391
392 if (open(STOPIN,"$server_java_cmd 2>&1 |")) {
393
394 my $line;
395 while (defined($line=<STOPIN>)) {
396 print "Jetty shutdown: $line" if ($output_verbosity>1);
397 }
398 close(STOPIN);
399
400 if ($do_wait) {
401 wait(); # let the child process finish
402 }
403
404 if ($output_verbosity>0) {
405 print "Jetty server shutdown\n";
406 }
407 }
408 else {
409 print STDERR "Error: failed to stop solr-jetty-server\n";
410 print STDERR "$!\n";
411 print STDERR "Command attempted was:\n";
412 print STDERR " $server_java_cmd\n";
413 print STDERR "run from directory:\n";
414 print STDERR " $solr_home\n";
415 print STDERR "----\n";
416
417 exit -2;
418 }
419}
420
421
422
4231;
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