src/zoom-memcached.c

   1 /* This file is part of the YAZ toolkit.
   2  * Copyright (C) Index Data
   3  * See the file LICENSE for details.
   4  */
   5 /**
   6  * \file zoom-memcached.c
   7  * \brief Implements query/record caching using memcached
   8  */
   9 #if HAVE_CONFIG_H
  10 #include <config.h>
  11 #endif
  12
  13 #include <assert.h>
  14 #include <string.h>
  15 #include <errno.h>
  16 #include "zoom-p.h"
  17
  18 #include <yaz/yaz-util.h>
  19 #include <yaz/xmalloc.h>
  20 #include <yaz/log.h>
  21 #include <yaz/diagbib1.h>
  22
  23 void ZOOM_memcached_init(ZOOM_connection c)
  24 {
  25 #if HAVE_LIBMEMCACHED
  26     c->mc_st = 0;
  27 #endif
  28 #if HAVE_HIREDIS
  29     c->redis_c = 0;
  30 #endif
  31     c->expire_search = 600;
  32     c->expire_record = 1200;
  33 }
  34
  35 void ZOOM_memcached_destroy(ZOOM_connection c)
  36 {
  37 #if HAVE_LIBMEMCACHED
  38     if (c->mc_st)
  39         memcached_free(c->mc_st);
  40 #endif
  41 #if HAVE_HIREDIS
  42     if (c->redis_c)
  43         redisFree(c->redis_c);
  44 #endif
  45 }
  46
  47 #if HAVE_LIBMEMCACHED
  48 static memcached_st *create_memcached(const char *conf,
  49                                       int *expire_search, int *expire_record)
  50 {
  51     char **darray;
  52     int i, num;
  53     memcached_st *mc = memcached_create(0);
  54     NMEM nmem = nmem_create();
  55     memcached_return_t rc;
  56
  57     nmem_strsplit_blank(nmem, conf, &darray, &num);
  58     for (i = 0; mc && i < num; i++)
  59     {
  60         if (!yaz_strncasecmp(darray[i], "--SERVER=", 9))
  61         {
  62             char *host = darray[i] + 9;
  63             char *port = strchr(host, ':');
  64             char *weight = strstr(host, "/?");
  65             if (port)
  66                 *port++ = '\0';
  67             if (weight)
  68             {
  69                 *weight = '\0';
  70                 weight += 2;
  71             }
  72             rc = memcached_server_add(mc, host, port ? atoi(port) : 11211);
  73             yaz_log(YLOG_LOG, "memcached_server_add host=%s rc=%u %s",
  74                     host, (unsigned) rc, memcached_strerror(mc, rc));
  75             if (rc != MEMCACHED_SUCCESS)
  76             {
  77                 memcached_free(mc);
  78                 mc = 0;
  79             }
  80         }
  81         else if (!yaz_strncasecmp(darray[i], "--EXPIRE=", 9))
  82         {
  83             *expire_search = atoi(darray[i] + 9);
  84             *expire_record = 600 + *expire_search;
  85         }
  86         else
  87         {
  88             /* bad directive */
  89             memcached_free(mc);
  90             mc = 0;
  91         }
  92     }
  93     nmem_destroy(nmem);
  94     return mc;
  95 }
  96 #endif
  97
  98 #if HAVE_HIREDIS
  99 static redisContext *create_redis(const char *conf,
 100                                   int *expire_search, int *expire_record)
 101 {
 102     char **darray;
 103     int i, num;
 104     NMEM nmem = nmem_create();
 105     redisContext *context = 0;
 106
 107     nmem_strsplit_blank(nmem, conf, &darray, &num);
 108     for (i = 0; i < num; i++)
 109     {
 110         if (!yaz_strncasecmp(darray[i], "--SERVER=", 9))
 111         {
 112             struct timeval timeout = { 1, 500000 }; /* 1.5 seconds */
 113             char *host = darray[i] + 9;
 114             char *port = strchr(host, ':');
 115             if (port)
 116                 *port++ = '\0';
 117             context = redisConnectWithTimeout(host,
 118                                               port ? atoi(port) : 6379,
 119                                               timeout);
 120         }
 121         else if (!yaz_strncasecmp(darray[i], "--EXPIRE=", 9))
 122         {
 123             *expire_search = atoi(darray[i] + 9);
 124             *expire_record = 600 + *expire_search;
 125         }
 126     }
 127     nmem_destroy(nmem);
 128     return context;
 129 }
 130 #endif
 131
 132 int ZOOM_memcached_configure(ZOOM_connection c)
 133 {
 134     const char *val;
 135 #if HAVE_HIREDIS
 136     if (c->redis_c)
 137     {
 138         redisFree(c->redis_c);
 139         c->redis_c = 0;
 140     }
 141 #endif
 142 #if HAVE_LIBMEMCACHED
 143     if (c->mc_st)
 144     {
 145         memcached_free(c->mc_st);
 146         c->mc_st = 0;
 147     }
 148 #endif
 149
 150     val = ZOOM_options_get(c->options, "redis");
 151     if (val && *val)
 152     {
 153 #if HAVE_HIREDIS
 154         c->redis_c = create_redis(val,
 155                                   &c->expire_search, &c->expire_record);
 156         if (c->redis_c == 0 || c->redis_c->err)
 157         {
 158             ZOOM_set_error(c, ZOOM_ERROR_MEMCACHED,
 159                            "could not create redis");
 160             return -1;
 161         }
 162         return 0; /* don't bother with memcached if redis is enabled */
 163 #else
 164         ZOOM_set_error(c, ZOOM_ERROR_MEMCACHED, "not enabled");
 165         return -1;
 166 #endif
 167     }
 168     val = ZOOM_options_get(c->options, "memcached");
 169     if (val && *val)
 170     {
 171 #if HAVE_LIBMEMCACHED
 172         c->mc_st = create_memcached(val, &c->expire_search, &c->expire_record);
 173         if (!c->mc_st)
 174         {
 175             ZOOM_set_error(c, ZOOM_ERROR_MEMCACHED,
 176                            "could not create memcached");
 177             return -1;
 178         }
 179         memcached_behavior_set(c->mc_st, MEMCACHED_BEHAVIOR_BINARY_PROTOCOL, 1);
 180 #else
 181         ZOOM_set_error(c, ZOOM_ERROR_MEMCACHED, "not enabled");
 182         return -1;
 183 #endif
 184     }
 185     return 0;
 186 }
 187
 188 static void wrbuf_vary_puts(WRBUF w, const char *v)
 189 {
 190     if (v)
 191     {
 192         if (strlen(v) > 40)
 193         {
 194             wrbuf_sha1_puts(w, v, 1);
 195         }
 196         else
 197         {
 198             wrbuf_puts(w, v);
 199         }
 200     }
 201 }
 202
 203 void ZOOM_memcached_resultset(ZOOM_resultset r, ZOOM_query q)
 204 {
 205     ZOOM_connection c = r->connection;
 206
 207     r->mc_key = wrbuf_alloc();
 208     wrbuf_puts(r->mc_key, "1;");
 209     wrbuf_vary_puts(r->mc_key, c->host_port);
 210     wrbuf_puts(r->mc_key, ";");
 211     wrbuf_vary_puts(r->mc_key, ZOOM_resultset_option_get(r, "extraArgs"));
 212     wrbuf_puts(r->mc_key, ";");
 213     wrbuf_vary_puts(r->mc_key, c->user);
 214     wrbuf_puts(r->mc_key, ";");
 215     wrbuf_vary_puts(r->mc_key, c->group);
 216     wrbuf_puts(r->mc_key, ";");
 217     if (c->password)
 218         wrbuf_sha1_puts(r->mc_key, c->password, 1);
 219     wrbuf_puts(r->mc_key, ";");
 220     {
 221         WRBUF w = wrbuf_alloc();
 222         ZOOM_query_get_hash(q, w);
 223         wrbuf_sha1_puts(r->mc_key, wrbuf_cstr(w), 1);
 224         wrbuf_destroy(w);
 225     }
 226     wrbuf_puts(r->mc_key, ";");
 227     wrbuf_vary_puts(r->mc_key, r->req_facets);
 228 }
 229
 230 void ZOOM_memcached_search(ZOOM_connection c, ZOOM_resultset resultset)
 231 {
 232 #if HAVE_HIREDIS
 233     if (c->redis_c && resultset->live_set == 0)
 234     {
 235         redisReply *reply;
 236         const char *argv[2];
 237
 238         argv[0] = "GET";
 239         argv[1] = wrbuf_cstr(resultset->mc_key);
 240
 241         reply = redisCommandArgv(c->redis_c, 2, argv, 0);
 242         /* count;precision (ASCII) + '\0' + BER buffer for otherInformation */
 243         if (reply && reply->type == REDIS_REPLY_STRING)
 244         {
 245             char *v = reply->str;
 246             int v_len = reply->len;
 247             ZOOM_Event event;
 248             size_t lead_len = strlen(v) + 1;
 249
 250             resultset->size = odr_atoi(v);
 251
 252             yaz_log(YLOG_LOG, "For key %s got value %s lead_len=%d len=%d",
 253                     wrbuf_cstr(resultset->mc_key), v, (int) lead_len,
 254                     (int) v_len);
 255             if (v_len > lead_len)
 256             {
 257                 Z_OtherInformation *oi = 0;
 258                 int oi_len = v_len - lead_len;
 259                 odr_setbuf(resultset->odr, v + lead_len, oi_len, 0);
 260                 if (!z_OtherInformation(resultset->odr, &oi, 0, 0))
 261                 {
 262                     yaz_log(YLOG_WARN, "oi decoding failed");
 263                     freeReplyObject(reply);
 264                     return;
 265                 }
 266                 ZOOM_handle_search_result(c, resultset, oi);
 267                 ZOOM_handle_facet_result(c, resultset, oi);
 268             }
 269             event = ZOOM_Event_create(ZOOM_EVENT_RECV_SEARCH);
 270             ZOOM_connection_put_event(c, event);
 271             resultset->live_set = 1;
 272         }
 273         if (reply)
 274             freeReplyObject(reply);
 275     }
 276 #endif
 277 #if HAVE_LIBMEMCACHED
 278     if (c->mc_st && resultset->live_set == 0)
 279     {
 280         size_t v_len;
 281         uint32_t flags;
 282         memcached_return_t rc;
 283         char *v = memcached_get(c->mc_st, wrbuf_buf(resultset->mc_key),
 284                                 wrbuf_len(resultset->mc_key),
 285                                 &v_len, &flags, &rc);
 286         /* count;precision (ASCII) + '\0' + BER buffer for otherInformation */
 287         if (v)
 288         {
 289             ZOOM_Event event;
 290             size_t lead_len = strlen(v) + 1;
 291
 292             resultset->size = odr_atoi(v);
 293
 294             yaz_log(YLOG_LOG, "For key %s got value %s lead_len=%d len=%d",
 295                     wrbuf_cstr(resultset->mc_key), v, (int) lead_len,
 296                     (int) v_len);
 297             if (v_len > lead_len)
 298             {
 299                 Z_OtherInformation *oi = 0;
 300                 int oi_len = v_len - lead_len;
 301                 odr_setbuf(resultset->odr, v + lead_len, oi_len, 0);
 302                 if (!z_OtherInformation(resultset->odr, &oi, 0, 0))
 303                 {
 304                     yaz_log(YLOG_WARN, "oi decoding failed");
 305                     free(v);
 306                     return;
 307                 }
 308                 ZOOM_handle_search_result(c, resultset, oi);
 309                 ZOOM_handle_facet_result(c, resultset, oi);
 310             }
 311             free(v);
 312             event = ZOOM_Event_create(ZOOM_EVENT_RECV_SEARCH);
 313             ZOOM_connection_put_event(c, event);
 314             resultset->live_set = 1;
 315         }
 316     }
 317 #endif
 318 }
 319
 320 #if HAVE_HIREDIS
 321 static void expire_redis(redisContext *redis_c,
 322                          const char *buf, size_t len, int exp)
 323 {
 324     redisReply *reply;
 325     const char *argv[3];
 326     size_t argvlen[3];
 327     char key_val[20];
 328
 329     sprintf(key_val, "%d", exp);
 330
 331     argv[0] = "EXPIRE";
 332     argvlen[0] = 6;
 333     argv[1] = buf;
 334     argvlen[1] = len;
 335     argv[2] = key_val;
 336     argvlen[2] = strlen(key_val);
 337     reply = redisCommandArgv(redis_c, 3, argv, argvlen);
 338     freeReplyObject(reply);
 339 }
 340 #endif
 341
 342 void ZOOM_memcached_hitcount(ZOOM_connection c, ZOOM_resultset resultset,
 343                              Z_OtherInformation *oi, const char *precision)
 344 {
 345 #if HAVE_HIREDIS
 346     if (c->redis_c && resultset->live_set == 0)
 347     {
 348         char *str;
 349         ODR odr = odr_createmem(ODR_ENCODE);
 350         char *oi_buf = 0;
 351         int oi_len = 0;
 352         char *key;
 353
 354         str = odr_malloc(odr, 20 + strlen(precision));
 355         /* count;precision (ASCII) + '\0' + BER buffer for otherInformation */
 356         sprintf(str, ODR_INT_PRINTF ";%s", resultset->size, precision);
 357         if (oi)
 358         {
 359             z_OtherInformation(odr, &oi, 0, 0);
 360             oi_buf = odr_getbuf(odr, &oi_len, 0);
 361         }
 362         key = odr_malloc(odr, strlen(str) + 1 + oi_len);
 363         strcpy(key, str);
 364         if (oi_len)
 365             memcpy(key + strlen(str) + 1, oi_buf, oi_len);
 366
 367         {
 368             redisReply *reply;
 369             const char *argv[3];
 370             size_t argvlen[3];
 371             argv[0] = "SET";
 372             argvlen[0] = 3;
 373             argv[1] = wrbuf_buf(resultset->mc_key);
 374             argvlen[1] = wrbuf_len(resultset->mc_key);
 375             argv[2] = key;
 376             argvlen[2] = strlen(str) + 1 + oi_len;
 377             reply = redisCommandArgv(c->redis_c, 3, argv, argvlen);
 378             freeReplyObject(reply);
 379         }
 380         expire_redis(c->redis_c,
 381                      wrbuf_buf(resultset->mc_key),
 382                      wrbuf_len(resultset->mc_key),
 383                      c->expire_search);
 384         odr_destroy(odr);
 385     }
 386 #endif
 387 #if HAVE_LIBMEMCACHED
 388     if (c->mc_st && resultset->live_set == 0)
 389     {
 390         uint32_t flags = 0;
 391         memcached_return_t rc;
 392         char *str;
 393         ODR odr = odr_createmem(ODR_ENCODE);
 394         char *oi_buf = 0;
 395         int oi_len = 0;
 396         char *key;
 397
 398         str = odr_malloc(odr, 20 + strlen(precision));
 399         /* count;precision (ASCII) + '\0' + BER buffer for otherInformation */
 400         sprintf(str, ODR_INT_PRINTF ";%s", resultset->size, precision);
 401         if (oi)
 402         {
 403             z_OtherInformation(odr, &oi, 0, 0);
 404             oi_buf = odr_getbuf(odr, &oi_len, 0);
 405         }
 406         key = odr_malloc(odr, strlen(str) + 1 + oi_len);
 407         strcpy(key, str);
 408         if (oi_len)
 409             memcpy(key + strlen(str) + 1, oi_buf, oi_len);
 410
 411         rc = memcached_set(c->mc_st,
 412                            wrbuf_buf(resultset->mc_key),
 413                            wrbuf_len(resultset->mc_key),
 414                            key, strlen(str) + 1 + oi_len,
 415                            c->expire_search, flags);
 416         yaz_log(YLOG_LOG, "Store hit count key=%s value=%s oi_len=%d rc=%u %s",
 417                 wrbuf_cstr(resultset->mc_key), str, oi_len, (unsigned) rc,
 418                 memcached_strerror(c->mc_st, rc));
 419         odr_destroy(odr);
 420     }
 421 #endif
 422 }
 423
 424 void ZOOM_memcached_add(ZOOM_resultset r, Z_NamePlusRecord *npr,
 425                         int pos,
 426                         const char *syntax, const char *elementSetName,
 427                         const char *schema,
 428                         Z_SRW_diagnostic *diag)
 429 {
 430 #if HAVE_HIREDIS
 431     if (r->connection->redis_c &&
 432         !diag && npr->which == Z_NamePlusRecord_databaseRecord)
 433     {
 434         WRBUF k = wrbuf_alloc();
 435         WRBUF rec_sha1 = wrbuf_alloc();
 436         ODR odr = odr_createmem(ODR_ENCODE);
 437         char *rec_buf;
 438         int rec_len;
 439         const char *argv[3];
 440         size_t argvlen[3];
 441         redisReply *reply;
 442
 443         z_NamePlusRecord(odr, &npr, 0, 0);
 444         rec_buf = odr_getbuf(odr, &rec_len, 0);
 445
 446         wrbuf_write(k, wrbuf_buf(r->mc_key), wrbuf_len(r->mc_key));
 447         wrbuf_printf(k, ";%d;%s;%s;%s", pos,
 448                      syntax ? syntax : "",
 449                      elementSetName ? elementSetName : "",
 450                      schema ? schema : "");
 451
 452         wrbuf_sha1_write(rec_sha1, rec_buf, rec_len, 1);
 453
 454         argv[0] = "SET";
 455         argvlen[0] = 3;
 456         argv[1] = wrbuf_buf(k);
 457         argvlen[1] = wrbuf_len(k);
 458         argv[2] = wrbuf_buf(rec_sha1);
 459         argvlen[2] = wrbuf_len(rec_sha1);
 460
 461         reply = redisCommandArgv(r->connection->redis_c, 3, argv, argvlen);
 462         yaz_log(YLOG_LOG, "Store record key=%s val=%s",
 463                 wrbuf_cstr(k), wrbuf_cstr(rec_sha1));
 464         freeReplyObject(reply);
 465
 466         expire_redis(r->connection->redis_c, argv[1], argvlen[1],
 467                      r->connection->expire_search);
 468
 469         argv[1] = wrbuf_buf(rec_sha1);
 470         argvlen[1] = wrbuf_len(rec_sha1);
 471         argv[2] = rec_buf;
 472         argvlen[2] = rec_len;
 473
 474         reply = redisCommandArgv(r->connection->redis_c, 3, argv, argvlen);
 475         yaz_log(YLOG_LOG, "Add record key=%s rec_len=%d",
 476                 wrbuf_cstr(rec_sha1), rec_len);
 477         freeReplyObject(reply);
 478
 479         expire_redis(r->connection->redis_c, argv[1], argvlen[1],
 480                      r->connection->expire_record);
 481
 482         odr_destroy(odr);
 483         wrbuf_destroy(k);
 484         wrbuf_destroy(rec_sha1);
 485     }
 486 #endif
 487 #if HAVE_LIBMEMCACHED
 488     if (r->connection->mc_st &&
 489         !diag && npr->which == Z_NamePlusRecord_databaseRecord)
 490     {
 491         WRBUF k = wrbuf_alloc();
 492         WRBUF rec_sha1 = wrbuf_alloc();
 493         uint32_t flags = 0;
 494         memcached_return_t rc;
 495         ODR odr = odr_createmem(ODR_ENCODE);
 496         char *rec_buf;
 497         int rec_len;
 498
 499         z_NamePlusRecord(odr, &npr, 0, 0);
 500         rec_buf = odr_getbuf(odr, &rec_len, 0);
 501
 502         wrbuf_write(k, wrbuf_buf(r->mc_key), wrbuf_len(r->mc_key));
 503         wrbuf_printf(k, ";%d;%s;%s;%s", pos,
 504                      syntax ? syntax : "",
 505                      elementSetName ? elementSetName : "",
 506                      schema ? schema : "");
 507
 508         wrbuf_sha1_write(rec_sha1, rec_buf, rec_len, 1);
 509
 510         rc = memcached_set(r->connection->mc_st,
 511                            wrbuf_buf(k), wrbuf_len(k),
 512                            wrbuf_buf(rec_sha1), wrbuf_len(rec_sha1),
 513                            r->connection->expire_search, flags);
 514
 515         yaz_log(YLOG_LOG, "Store record key=%s val=%s rc=%u %s",
 516                 wrbuf_cstr(k), wrbuf_cstr(rec_sha1), (unsigned) rc,
 517                 memcached_strerror(r->connection->mc_st, rc));
 518
 519         rc = memcached_add(r->connection->mc_st,
 520                            wrbuf_buf(rec_sha1), wrbuf_len(rec_sha1),
 521                            rec_buf, rec_len,
 522                            r->connection->expire_record, flags);
 523
 524         yaz_log(YLOG_LOG, "Add record key=%s rec_len=%d rc=%u %s",
 525                 wrbuf_cstr(rec_sha1), rec_len, (unsigned) rc,
 526                 memcached_strerror(r->connection->mc_st, rc));
 527
 528         odr_destroy(odr);
 529         wrbuf_destroy(k);
 530         wrbuf_destroy(rec_sha1);
 531     }
 532 #endif
 533 }
 534
 535 Z_NamePlusRecord *ZOOM_memcached_lookup(ZOOM_resultset r, int pos,
 536                                         const char *syntax,
 537                                         const char *elementSetName,
 538                                         const char *schema)
 539 {
 540 #if HAVE_HIREDIS
 541     if (r->connection && r->connection->redis_c)
 542     {
 543         WRBUF k = wrbuf_alloc();
 544         const char *argv[2];
 545         size_t argvlen[2];
 546         redisReply *reply1;
 547
 548         wrbuf_write(k, wrbuf_buf(r->mc_key), wrbuf_len(r->mc_key));
 549         wrbuf_printf(k, ";%d;%s;%s;%s", pos,
 550                      syntax ? syntax : "",
 551                      elementSetName ? elementSetName : "",
 552                      schema ? schema : "");
 553
 554         yaz_log(YLOG_LOG, "Lookup record %s", wrbuf_cstr(k));
 555         argv[0] = "GET";
 556         argvlen[0] = 3;
 557         argv[1] = wrbuf_buf(k);
 558         argvlen[1] = wrbuf_len(k);
 559         reply1 = redisCommandArgv(r->connection->redis_c, 2, argv, argvlen);
 560
 561         wrbuf_destroy(k);
 562         if (reply1 && reply1->type == REDIS_REPLY_STRING)
 563         {
 564             redisReply *reply2;
 565             char *sha1_buf = reply1->str;
 566             int sha1_len = reply1->len;
 567
 568             yaz_log(YLOG_LOG, "Lookup record %.*s", (int) sha1_len, sha1_buf);
 569
 570             argv[0] = "GET";
 571             argvlen[0] = 3;
 572             argv[1] = sha1_buf;
 573             argvlen[1] = sha1_len;
 574
 575             reply2 = redisCommandArgv(r->connection->redis_c, 2, argv, argvlen);
 576             if (reply2 && reply2->type == REDIS_REPLY_STRING)
 577             {
 578                 Z_NamePlusRecord *npr = 0;
 579                 char *v_buf = reply2->str;
 580                 int v_len = reply2->len;
 581
 582                 odr_setbuf(r->odr, v_buf, v_len, 0);
 583                 z_NamePlusRecord(r->odr, &npr, 0, 0);
 584                 if (npr)
 585                     yaz_log(YLOG_LOG, "returned redis copy");
 586                 freeReplyObject(reply2);
 587                 freeReplyObject(reply1);
 588                 return npr;
 589             }
 590             freeReplyObject(reply2);
 591         }
 592         freeReplyObject(reply1);
 593     }
 594 #endif
 595 #if HAVE_LIBMEMCACHED
 596     if (r->connection && r->connection->mc_st)
 597     {
 598         WRBUF k = wrbuf_alloc();
 599         char *sha1_buf;
 600         size_t sha1_len;
 601         uint32_t flags;
 602         memcached_return_t rc;
 603
 604         wrbuf_write(k, wrbuf_buf(r->mc_key), wrbuf_len(r->mc_key));
 605         wrbuf_printf(k, ";%d;%s;%s;%s", pos,
 606                      syntax ? syntax : "",
 607                      elementSetName ? elementSetName : "",
 608                      schema ? schema : "");
 609
 610         yaz_log(YLOG_LOG, "Lookup record %s", wrbuf_cstr(k));
 611         sha1_buf = memcached_get(r->connection->mc_st,
 612                                  wrbuf_buf(k), wrbuf_len(k),
 613                                  &sha1_len, &flags, &rc);
 614
 615         wrbuf_destroy(k);
 616         if (sha1_buf)
 617         {
 618             size_t v_len;
 619             char *v_buf;
 620
 621             yaz_log(YLOG_LOG, "Lookup record %.*s", (int) sha1_len, sha1_buf);
 622             v_buf = memcached_get(r->connection->mc_st, sha1_buf, sha1_len,
 623                                   &v_len, &flags, &rc);
 624             free(sha1_buf);
 625             if (v_buf)
 626             {
 627                 Z_NamePlusRecord *npr = 0;
 628
 629                 odr_setbuf(r->odr, v_buf, v_len, 0);
 630                 z_NamePlusRecord(r->odr, &npr, 0, 0);
 631                 free(v_buf);
 632                 if (npr)
 633                     yaz_log(YLOG_LOG, "returned memcached copy");
 634                 return npr;
 635             }
 636         }
 637     }
 638 #endif
 639     return 0;
 640
 641 }
 642 /*
 643  * Local variables:
 644  * c-basic-offset: 4
 645  * c-file-style: "Stroustrup"
 646  * indent-tabs-mode: nil
 647  * End:
 648  * vim: shiftwidth=4 tabstop=8 expandtab
 649  */
 650