configure: only consider hiredis if libgcrypt is also present
[yaz-moved-to-github.git] / src / zoom-p.h
1 /* This file is part of the YAZ toolkit.
2  * Copyright (C) Index Data.
3  * All rights reserved.
4  * Redistribution and use in source and binary forms, with or without
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
10  *       notice, this list of conditions and the following disclaimer in the
11  *       documentation and/or other materials provided with the distribution.
12  *     * Neither the name of Index Data nor the names of its contributors
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
17  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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
20  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
21  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
22  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
23  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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/cookie.h>
38 #include <yaz/mutex.h>
39 #if HAVE_LIBMEMCACHED_MEMCACHED_H
40 #include <libmemcached/memcached.h>
41 #endif
42 #if HAVE_HIREDIS
43 #include <hiredis/hiredis.h>
44 #endif
45
46 #define SHPTR 1
47
48 typedef struct ZOOM_Event_p *ZOOM_Event;
49
50 typedef enum {
51     zoom_sru_error,
52     zoom_sru_soap,
53     zoom_sru_get,
54     zoom_sru_post,
55     zoom_sru_solr
56 } zoom_sru_mode;
57
58
59 typedef struct ZOOM_task_p *ZOOM_task;
60
61 #define STATE_IDLE 0
62 #define STATE_CONNECTING 1
63 #define STATE_ESTABLISHED 2
64
65 struct ZOOM_connection_p {
66     enum oid_proto proto;
67     COMSTACK cs;
68     char *host_port;
69     int error;
70     char *addinfo;
71     char *diagset;
72     int state;
73     int mask;
74     int reconnect_ok;
75     ODR odr_in;
76     ODR odr_out;
77     ODR odr_print;
78     ODR odr_save;
79
80     char *buf_in;
81     int len_in;
82     char *buf_out;
83     int len_out;
84     char *proxy;
85     char *tproxy;
86     char *charset;
87     char *lang;
88     char *cookie_out;
89     char *cookie_in;
90     char *client_IP;
91     char *sru_version;
92
93     char *user;
94     char *group;
95     char *password;
96     int url_authentication;
97
98     int async;
99     int support_named_resultsets;
100     int last_event;
101
102     int maximum_record_size;
103     int preferred_message_size;
104
105     ZOOM_task tasks;
106     ZOOM_options options;
107     ZOOM_resultset resultsets;
108     ZOOM_Event m_queue_front;
109     ZOOM_Event m_queue_back;
110     zoom_sru_mode sru_mode;
111     int no_redirects; /* 0 for no redirects. >0 for number of redirects */
112     yaz_cookies_t cookies;
113     char *location;
114
115     int log_details;
116     int log_api;
117     WRBUF saveAPDU_wrbuf;
118 #if HAVE_LIBMEMCACHED_MEMCACHED_H
119     memcached_st *mc_st;
120 #endif
121 #if HAVE_HIREDIS
122     redisContext *redis_c;
123 #endif
124 };
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     ODR odr;
139     ZOOM_record_cache record_hash[RECORD_HASH_SIZE];
140     ZOOM_options options;
141     ZOOM_connection connection;
142     char **databaseNames;
143     int num_databaseNames;
144     YAZ_MUTEX mutex;
145 #if SHPTR
146     struct WRBUF_shptr *record_wrbuf;
147 #endif
148     ZOOM_resultset next;
149     char *req_facets;
150     ZOOM_facet_field *res_facets;
151     int num_res_facets;
152     char **facets_names; /* redundant. For ZOOM_resultset_facets_names only */
153     WRBUF mc_key;
154     int live_set; /* 0=no hit count, 1=cached hit, 2=hits + real set */
155 };
156
157 struct facet_term_p {
158     char *term;
159     int frequency;
160 };
161
162 struct ZOOM_facet_field_p {
163     char *facet_name;
164     int num_terms;
165     struct facet_term_p *facet_terms;
166 };
167
168 struct ZOOM_scanset_p {
169     int refcount;
170     ODR odr;
171     ZOOM_options options;
172     ZOOM_connection connection;
173     ZOOM_query query;
174     Z_ScanResponse *scan_response;
175     Z_SRW_scanResponse *srw_scan_response;
176
177     char **databaseNames;
178     int num_databaseNames;
179 };
180
181 struct ZOOM_package_p {
182     int refcount;
183     ODR odr_out;
184     ZOOM_options options;
185     ZOOM_connection connection;
186     char *buf_out;
187     int len_out;
188 };
189
190 struct ZOOM_task_p {
191     int running;
192     int which;
193     union {
194 #define ZOOM_TASK_SEARCH 1
195         struct {
196             int count;
197             int start;
198             ZOOM_resultset resultset;
199             char *syntax;
200             char *elementSetName;
201             char *schema;
202         } search;
203 #define ZOOM_TASK_CONNECT 3
204 #define ZOOM_TASK_SCAN 4
205         struct {
206             ZOOM_scanset scan;
207         } scan;
208 #define ZOOM_TASK_PACKAGE 5
209         ZOOM_package package;
210 #define ZOOM_TASK_SORT 6
211         struct {
212             ZOOM_resultset resultset;
213             ZOOM_query q;
214         } sort;
215     } u;
216     ZOOM_task next;
217 };
218
219 typedef enum {
220     zoom_pending,
221     zoom_complete
222 } zoom_ret;
223
224 void ZOOM_options_addref (ZOOM_options opt);
225
226 void ZOOM_handle_Z3950_apdu(ZOOM_connection c, Z_APDU *apdu);
227
228 void ZOOM_set_dset_error(ZOOM_connection c, int error,
229                          const char *dset,
230                          const char *addinfo, const char *addinfo2);
231
232 void ZOOM_set_error(ZOOM_connection c, int error, const char *addinfo);
233
234 ZOOM_Event ZOOM_Event_create(int kind);
235 void ZOOM_connection_put_event(ZOOM_connection c, ZOOM_Event event);
236
237 zoom_ret ZOOM_connection_Z3950_search(ZOOM_connection c);
238 zoom_ret ZOOM_connection_Z3950_send_scan(ZOOM_connection c);
239 zoom_ret ZOOM_send_buf(ZOOM_connection c);
240 zoom_ret send_Z3950_sort(ZOOM_connection c, ZOOM_resultset resultset);
241 char **ZOOM_connection_get_databases(ZOOM_connection con, ZOOM_options options,
242                                      int *num, ODR odr);
243 zoom_ret ZOOM_connection_Z3950_send_init(ZOOM_connection c);
244
245 ZOOM_task ZOOM_connection_add_task(ZOOM_connection c, int which);
246 void ZOOM_connection_remove_task(ZOOM_connection c);
247 int ZOOM_test_reconnect(ZOOM_connection c);
248
249 ZOOM_record ZOOM_record_cache_lookup(ZOOM_resultset r, int pos,
250                                      const char *syntax,
251                                      const char *elementSetName,
252                                      const char *schema);
253 void ZOOM_record_cache_add(ZOOM_resultset r, Z_NamePlusRecord *npr,
254                            int pos,
255                            const char *syntax, const char *elementSetName,
256                            const char *schema,
257                            Z_SRW_diagnostic *diag);
258
259 Z_Query *ZOOM_query_get_Z_Query(ZOOM_query s);
260 Z_SortKeySpecList *ZOOM_query_get_sortspec(ZOOM_query s);
261 const char *ZOOM_query_get_query_string(ZOOM_query s);
262 const char *ZOOM_query_get_sru11(ZOOM_query s);
263 void ZOOM_query_get_hash(ZOOM_query s, WRBUF w);
264
265 int ZOOM_uri_to_code(const char *uri);
266
267 zoom_ret ZOOM_connection_srw_send_search(ZOOM_connection c);
268 zoom_ret ZOOM_connection_srw_send_scan(ZOOM_connection c);
269
270 int ZOOM_handle_sru(ZOOM_connection c, Z_HTTP_Response *hres,
271                     zoom_ret *cret, char **addinfo);
272
273 void ZOOM_set_HTTP_error(ZOOM_connection c, int error,
274                          const char *addinfo, const char *addinfo2);
275
276 ZOOM_Event ZOOM_connection_get_event(ZOOM_connection c);
277 void ZOOM_connection_remove_events(ZOOM_connection c);
278 void ZOOM_Event_destroy(ZOOM_Event event);
279 zoom_ret ZOOM_send_GDU(ZOOM_connection c, Z_GDU *gdu);
280 void ZOOM_handle_facet_list(ZOOM_resultset r, Z_FacetList *fl);
281
282 void ZOOM_memcached_init(ZOOM_connection c);
283 int ZOOM_memcached_configure(ZOOM_connection c);
284 void ZOOM_memcached_destroy(ZOOM_connection c);
285 void ZOOM_memcached_resultset(ZOOM_resultset r, ZOOM_query q);
286 void ZOOM_memcached_search(ZOOM_connection c, ZOOM_resultset r);
287 void ZOOM_memcached_hitcount(ZOOM_connection c, ZOOM_resultset result,
288                              Z_OtherInformation *oi, const char *precision);
289 void ZOOM_memcached_add(ZOOM_resultset r, Z_NamePlusRecord *npr,
290                         int pos,
291                         const char *syntax, const char *elementSetName,
292                         const char *schema,
293                         Z_SRW_diagnostic *diag);
294 Z_NamePlusRecord *ZOOM_memcached_lookup(ZOOM_resultset r, int pos,
295                                         const char *syntax,
296                                         const char *elementSetName,
297                                         const char *schema);
298 ZOOM_record ZOOM_record_cache_lookup_i(ZOOM_resultset r, int pos,
299                                        const char *syntax,
300                                        const char *elementSetName,
301                                        const char *schema);
302 void ZOOM_handle_facet_result(ZOOM_connection c, ZOOM_resultset r,
303                               Z_OtherInformation *o);
304 void ZOOM_handle_search_result(ZOOM_connection c, ZOOM_resultset resultset,
305                                Z_OtherInformation *o);
306
307 /*
308  * Local variables:
309  * c-basic-offset: 4
310  * c-file-style: "Stroustrup"
311  * indent-tabs-mode: nil
312  * End:
313  * vim: shiftwidth=4 tabstop=8 expandtab
314  */
315