GFS: scan handler gets extra_args from request
[yaz-moved-to-github.git] / src / zoom-p.h
1 /* This file is part of the YAZ toolkit.
2  * Copyright (C) 1995-2013 Index Data.
3  * All rights reserved.
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5  * modification, are permitted provided that the following conditions are met:
6  *
7  *     * Redistributions of source code must retain the above copyright
8  *       notice, this list of conditions and the following disclaimer.
9  *     * Redistributions in binary form must reproduce the above copyright
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13  *       may be used to endorse or promote products derived from this
14  *       software without specific prior written permission.
15  *
16  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND ANY
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18  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
19  * DISCLAIMED. IN NO EVENT SHALL THE REGENTS AND CONTRIBUTORS BE LIABLE FOR ANY
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25  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26  */
27 /**
28  * \file zoom-p.h
29  * \brief Internal header for ZOOM implementation
30  */
31 #include <yaz/proto.h>
32 #include <yaz/oid_db.h>
33 #include <yaz/comstack.h>
34 #include <yaz/wrbuf.h>
35 #include <yaz/zoom.h>
36 #include <yaz/srw.h>
37 #include <yaz/mutex.h>
38
39 #define SHPTR 1
40 #define ZOOM_RESULT_LISTS 0
41
42 typedef struct ZOOM_Event_p *ZOOM_Event;
43
44 typedef enum {
45     zoom_sru_error,
46     zoom_sru_soap,
47     zoom_sru_get,
48     zoom_sru_post,
49     zoom_sru_solr
50 } zoom_sru_mode;
51
52
53 typedef struct ZOOM_task_p *ZOOM_task;
54
55 #define STATE_IDLE 0
56 #define STATE_CONNECTING 1
57 #define STATE_ESTABLISHED 2
58
59 #if ZOOM_RESULT_LISTS
60 typedef struct ZOOM_resultsets_p *ZOOM_resultsets;
61 #endif
62
63 struct ZOOM_connection_p {
64     enum oid_proto proto;
65     COMSTACK cs;
66     char *host_port;
67     int error;
68     char *addinfo;
69     char *diagset;
70     int state;
71     int mask;
72     int reconnect_ok;
73     ODR odr_in;
74     ODR odr_out;
75     ODR odr_print;
76     ODR odr_save;
77
78     char *buf_in;
79     int len_in;
80     char *buf_out;
81     int len_out;
82     char *proxy;
83     char *tproxy;
84     char *charset;
85     char *lang;
86     char *cookie_out;
87     char *cookie_in;
88     char *client_IP;
89     char *sru_version;
90
91     char *user;
92     char *group;
93     char *password;
94
95     int async;
96     int support_named_resultsets;
97     int last_event;
98
99     int maximum_record_size;
100     int preferred_message_size;
101
102     ZOOM_task tasks;
103     ZOOM_options options;
104 #if ZOOM_RESULT_LISTS
105     ZOOM_resultsets resultsets;
106 #else
107     ZOOM_resultset resultsets;
108 #endif
109     ZOOM_Event m_queue_front;
110     ZOOM_Event m_queue_back;
111     zoom_sru_mode sru_mode;
112     int no_redirects; /* 0 for no redirects. >0 for number of redirects */
113
114     int log_details;
115     int log_api;
116     WRBUF saveAPDU_wrbuf;
117 };
118
119 #if ZOOM_RESULT_LISTS
120 struct ZOOM_resultsets_p {
121     ZOOM_resultset resultset;
122     ZOOM_resultsets next;
123 };
124 #endif
125
126 typedef struct ZOOM_record_cache_p *ZOOM_record_cache;
127
128 #define RECORD_HASH_SIZE  131
129
130 struct ZOOM_resultset_p {
131     Z_SortKeySpecList *r_sort_spec;
132     ZOOM_query query;
133     int refcount;
134     Odr_int size;
135     int step;
136     int piggyback;
137     char *setname;
138     char *schema;
139     ODR odr;
140     ZOOM_record_cache record_hash[RECORD_HASH_SIZE];
141     ZOOM_options options;
142     ZOOM_connection connection;
143     char **databaseNames;
144     int num_databaseNames;
145     YAZ_MUTEX mutex;
146 #if SHPTR
147     struct WRBUF_shptr *record_wrbuf;
148 #endif
149 #if ZOOM_RESULT_LISTS
150 #else
151     ZOOM_resultset next;
152 #endif
153     ZOOM_facet_field *facets;
154     int num_facets;
155     char **facets_names;
156 };
157
158 struct facet_term_p {
159     char *term;
160     int frequency;
161 };
162
163 struct ZOOM_facet_field_p {
164     char *facet_name;
165     int num_terms;
166     struct facet_term_p *facet_terms;
167 };
168
169 struct ZOOM_scanset_p {
170     int refcount;
171     ODR odr;
172     ZOOM_options options;
173     ZOOM_connection connection;
174     ZOOM_query query;
175     Z_ScanResponse *scan_response;
176     Z_SRW_scanResponse *srw_scan_response;
177
178     char **databaseNames;
179     int num_databaseNames;
180 };
181
182 struct ZOOM_package_p {
183     int refcount;
184     ODR odr_out;
185     ZOOM_options options;
186     ZOOM_connection connection;
187     char *buf_out;
188     int len_out;
189 };
190
191 struct ZOOM_task_p {
192     int running;
193     int which;
194     union {
195 #define ZOOM_TASK_SEARCH 1
196         struct {
197             int count;
198             int start;
199             ZOOM_resultset resultset;
200             char *syntax;
201             char *elementSetName;
202             int recv_search_fired;
203         } search;
204 #define ZOOM_TASK_RETRIEVE 2
205         struct {
206             int start;
207             ZOOM_resultset resultset;
208             int count;
209             char *syntax;
210             char *elementSetName;
211         } retrieve;
212 #define ZOOM_TASK_CONNECT 3
213 #define ZOOM_TASK_SCAN 4
214         struct {
215             ZOOM_scanset scan;
216         } scan;
217 #define ZOOM_TASK_PACKAGE 5
218         ZOOM_package package;
219 #define ZOOM_TASK_SORT 6
220         struct {
221             ZOOM_resultset resultset;
222             ZOOM_query q;
223         } sort;
224     } u;
225     ZOOM_task next;
226 };
227
228 typedef enum {
229     zoom_pending,
230     zoom_complete
231 } zoom_ret;
232
233 void ZOOM_options_addref (ZOOM_options opt);
234
235 void ZOOM_handle_Z3950_apdu(ZOOM_connection c, Z_APDU *apdu);
236
237 void ZOOM_set_dset_error(ZOOM_connection c, int error,
238                          const char *dset,
239                          const char *addinfo, const char *addinfo2);
240
241 void ZOOM_set_error(ZOOM_connection c, int error, const char *addinfo);
242
243 ZOOM_Event ZOOM_Event_create(int kind);
244 void ZOOM_connection_put_event(ZOOM_connection c, ZOOM_Event event);
245
246 zoom_ret ZOOM_connection_Z3950_send_search(ZOOM_connection c);
247 zoom_ret send_Z3950_present(ZOOM_connection c);
248 zoom_ret ZOOM_connection_Z3950_send_scan(ZOOM_connection c);
249 zoom_ret ZOOM_send_buf(ZOOM_connection c);
250 zoom_ret send_Z3950_sort(ZOOM_connection c, ZOOM_resultset resultset);
251 char **ZOOM_connection_get_databases(ZOOM_connection con, ZOOM_options options,
252                                      int *num, ODR odr);
253 zoom_ret ZOOM_connection_Z3950_send_init(ZOOM_connection c);
254
255 ZOOM_task ZOOM_connection_add_task(ZOOM_connection c, int which);
256 void ZOOM_connection_remove_task(ZOOM_connection c);
257 int ZOOM_test_reconnect(ZOOM_connection c);
258
259 ZOOM_record ZOOM_record_cache_lookup(ZOOM_resultset r, int pos,
260                                      const char *syntax,
261                                      const char *elementSetName);
262 void ZOOM_record_cache_add(ZOOM_resultset r, Z_NamePlusRecord *npr,
263                            int pos,
264                            const char *syntax, const char *elementSetName,
265                            const char *schema,
266                            Z_SRW_diagnostic *diag);
267
268 Z_Query *ZOOM_query_get_Z_Query(ZOOM_query s);
269 Z_SortKeySpecList *ZOOM_query_get_sortspec(ZOOM_query s);
270 const char *ZOOM_query_get_query_string(ZOOM_query s);
271 const char *ZOOM_query_get_sru11(ZOOM_query s);
272
273 int ZOOM_uri_to_code(const char *uri);
274
275 zoom_ret ZOOM_connection_srw_send_search(ZOOM_connection c);
276 zoom_ret ZOOM_connection_srw_send_scan(ZOOM_connection c);
277
278 int ZOOM_handle_sru(ZOOM_connection c, Z_HTTP_Response *hres,
279                     zoom_ret *cret, char **addinfo);
280
281 void ZOOM_set_HTTP_error(ZOOM_connection c, int error,
282                          const char *addinfo, const char *addinfo2);
283
284 ZOOM_Event ZOOM_connection_get_event(ZOOM_connection c);
285 void ZOOM_connection_remove_events(ZOOM_connection c);
286 void ZOOM_Event_destroy(ZOOM_Event event);
287 zoom_ret ZOOM_send_GDU(ZOOM_connection c, Z_GDU *gdu);
288
289 /*
290  * Local variables:
291  * c-basic-offset: 4
292  * c-file-style: "Stroustrup"
293  * indent-tabs-mode: nil
294  * End:
295  * vim: shiftwidth=4 tabstop=8 expandtab
296  */
297