3 * curl-de-sac - curl-de-sac.phh
5 * Copyright (C) 2014 Matteo Nastasi
6 * mailto: nastasi@alternativeoutput.it
7 * matteo.nastasi@gmail.com
8 * web: http://www.alternativeoutput.it
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.
15 * This program is distributed in the hope that it will be useful, but
16 * WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABLILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 * General Public License for more details. You should have received a
19 * copy of the GNU General Public License along with this program; if
20 * not, write to the Free Software Foundation, Inc, 59 Temple Place -
21 * Suite 330, Boston, MA 02111-1307, USA.
25 define('CURL_DE_SAC_VERS', '0.1');
26 $G_curl_de_sac_vers = CURL_DE_SAC_VERS;
33 function CDS_cmd($cmd_cls, $ch)
35 $this->cmd_cls = $cmd_cls;
37 $this->tlimit = time() + $cmd_cls->tout;
47 // NOTE: cmd_cls must be valid by definition
48 if ($this->cmd_cls->cds == NULL)
50 return $this->cmd_cls->cds->dbg_get();
59 function CDS_cmd_cls($name, $tout)
66 function cds_set($cds)
71 static function pre_create($cds, $url, $opts=NULL)
73 if ($cds->dbg_get() > 2) { printf("CURL: curl_init\n"); }
74 if (($ch = curl_init()) == FALSE)
76 curl_setopt($ch, CURLOPT_URL, $url);
78 curl_setopt($ch, CURLOPT_HEADER, 0);
79 curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
80 curl_setopt($ch, CURLOPT_FORBID_REUSE, true);
81 curl_setopt($ch, CURLOPT_HTTPHEADER, array('Connection: close'));
84 foreach($opts as $opt => $value) {
85 curl_setopt($ch, $opt, $value);
91 function create($cds, $ch)
94 printf("CDS_cmd_cls::create - begin\n");
95 printf("CURL: curl_multi_add_handle\n");
97 if (($ret = curl_multi_add_handle($cds->mh, $ch)) != 0) {
98 // INFO: $ret is a CURLM_XXX errors code
101 if ($cds->dbg > 2) { printf("CDS_cmd_cls::create - end\n"); }
105 function process($cmd, $ret)
108 fprintf(STDERR, "process MUST BE IMPLEMENTED");
112 function timeout($cmd)
114 fprintf(STDERR, "timeout MUST BE IMPLEMENTED");
120 return $this->cds->dbg;
130 function Curl_de_sac($dbg=0) {
131 if ($dbg > 2) { printf("CURL: curl_multi_init\n"); }
132 $this->mh = curl_multi_init();
133 $this->cmd_cls = array();
134 $this->cmd = array();
138 function dbg_set($dbg)
148 function cmd_cls_register($cmd_cls)
150 if (get_class($cmd_cls) != 'CDS_cmd_cls' && is_subclass_of($cmd_cls, 'CDS_cmd_cls') == FALSE)
153 if (isset($this->cmd_cls[$cmd_cls->name]))
156 $this->cmd_cls[$cmd_cls->name] = $cmd_cls;
157 $cmd_cls->cds_set($this);
162 function cmd_cls_deregister($cmd_cls)
164 if (get_class($cmd_cls) != 'CDS_cmd_cls' && is_subclass_of($cmd_cls, 'CDS_cmd_cls') == FALSE)
166 if (!isset($this->cmd_cls[$cmd_cls->name]))
169 $this->cmd_cls[$cmd_cls->name]->cds_set(NULL);
171 unset($this->cmd_cls[$cmd_cls->name]);
175 function cmd_cls_deregister_all()
177 foreach($this->cmd_cls as $cmd_cls) {
178 $cmd_cls->cds_set(NULL);
181 $this->cmd_cls = array();
185 function cleanup($key)
187 $cmd = $this->cmd[$key];
189 if ($this->dbg > 2) {
191 printf("CURL: curl_multi_remove_handle:\n");
192 print_r($cmd->ch_get());
195 // return 0 on SUCCESS or CURLM_XXX in other cases
196 if (($ret = curl_multi_remove_handle($this->mh, $cmd->ch_get())) != 0) {
197 fprintf(STDERR, "CURL: curl_multi_remove_handle FAILED (%d)\n", $ret);
199 if ($this->dbg > 2) { printf("CURL: curl_close\n"); }
200 curl_close($cmd->ch_get());
201 unset($this->cmd[$key]);
206 $args = func_get_args();
208 if ($this->dbg > 1) {
209 printf("CDS_cmd_cls::execute ARGS:\n");
213 if (($name = array_shift($args)) === NULL)
215 array_unshift($args, $this);
217 if (!isset($this->cmd_cls[$name]))
220 $cmd_cls = $this->cmd_cls[$name];
222 // custom create now can return synchronously returning true instead of a
223 // "command instance class" instance or false if any error occurs
224 $inst = call_user_func_array(array($cmd_cls, "create"), $args);
227 array_push($this->cmd, $inst);
228 if ($this->dbg > 1) { printf("CDS_cmd_cls::process - execute push cmd\n"); }
229 if (($this->dbg & 1) == 1) { print_r($this); }
237 function process($curtime=0)
242 if ($this->dbg > 1) { printf("CDS_cmd_cls::process - begin\n"); }
245 if ($this->dbg > 2) { printf("CURL: curl_multi_exec\n"); }
246 $ret = curl_multi_exec($this->mh, $running);
247 $msgs_in_queue = NULL;
250 if ($this->dbg > 2) { printf("CURL: curl_multi_info_read\n"); }
252 if ($ret = curl_multi_info_read ($this->mh, $msgs_in_queue)) {
253 if ($this->dbg > 1) { printf("Info_read miq: %d\n", $msgs_in_queue); }
254 if ($this->dbg > 2) { printf("CURL: curl_getinfo\n"); }
256 $info = curl_getinfo($ret['handle']);
257 if ($this->dbg > 1) {
258 printf("Getinfo:\n");
262 foreach($this->cmd as $key => $cmd) {
263 if ($cmd->ch == $ret['handle']) {
264 if ($cmd->cmd_cls->process($cmd, $ret) == TRUE) {
265 $this->cleanup($key);
271 } while ($msgs_in_queue > 0);
272 foreach ($this->cmd as $key => $cmd) {
273 if ($this->dbg > 2) { printf("Check tout, curr: %d tlimit %d\n", $curtime, $cmd->tlimit); }
274 if ($curtime > $cmd->tlimit) {
275 if ($this->dbg > 2) { printf("TIMEOUT REACHED!\n"); }
276 $cmd->cmd_cls->timeout($cmd);
277 $this->cleanup($key);
280 if ($this->dbg > 1) { printf("CDS_cmd_cls::process - end (queue: %d)\n", $msgs_in_queue); }