Add MARC field 876$f to tmarc.xsl, named "loan-period", #4411

[pazpar2-moved-to-github.git] / src / database.c

diff --git a/src/database.c b/src/database.c
index b121e95..08359d6 100644 (file)
--- a/src/database.c
+++ b/src/database.c
@@ -1,5 +1,5 @@
 /* This file is part of Pazpar2.
-   Copyright (C) 2006-2010 Index Data
+   Copyright (C) 2006-2011 Index Data
 
 Pazpar2 is free software; you can redistribute it and/or modify it under
 the terms of the GNU General Public License as published by the Free
@@ -27,12 +27,14 @@ Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 #include <sys/types.h>
 #include <sys/stat.h>
 #include <yaz/log.h>
+#include <yaz/nmem.h>
 
-#include "pazpar2.h"
+#include "ppmutex.h"
+#include "session.h"
 #include "host.h"
+#include "pazpar2_config.h"
 #include "settings.h"
 #include "http.h"
-#include "zeerex.h"
 #include "database.h"
 
 #include <sys/types.h>
@@ -63,28 +65,11 @@ struct database_criterion {
     struct database_criterion *next;
 };
 
-static struct host *hosts = 0;  /* thread pr */
 
-static xmlDoc *get_explain_xml(struct conf_targetprofiles *targetprofiles,
-                               const char *id)
-{
-    struct stat st;
-    char *dir;
-    char path[256];
-    char ide[256];
-    if (targetprofiles->type != Targetprofiles_local)
-    {
-        yaz_log(YLOG_FATAL, "Only supports local type");
-        return 0;
-    }
-    dir = targetprofiles->src;
-    urlencode(id, ide);
-    sprintf(path, "%s/%s", dir, ide);
-    if (!stat(path, &st))
-        return xmlParseFile(path);
-    else
-        return 0;
-}
+struct database_hosts {
+    struct host *hosts;
+    YAZ_MUTEX mutex;
+};
 
 // Create a new host structure for hostport
 static struct host *create_host(const char *hostport, iochan_man_t iochan_man)
@@ -103,20 +88,32 @@ static struct host *create_host(const char *hostport, iochan_man_t iochan_man)
         xfree(host);
         return 0;
     }
-    yaz_mutex_create(&host->mutex);
+    pazpar2_mutex_create(&host->mutex, "host");
+
+    yaz_cond_create(&host->cond_ready);
 
-    host->next = hosts;
-    hosts = host;
     return host;
 }
 
-static struct host *find_host(const char *hostport, iochan_man_t iochan_man)
+static struct host *find_host(database_hosts_t hosts,
+                              const char *hostport, iochan_man_t iochan_man)
 {
     struct host *p;
-    for (p = hosts; p; p = p->next)
+    yaz_mutex_enter(hosts->mutex);
+    for (p = hosts->hosts; p; p = p->next)
         if (!strcmp(p->hostport, hostport))
-            return p;
-    return create_host(hostport, iochan_man);
+            break;
+    if (!p)
+    {
+        p = create_host(hostport, iochan_man);
+        if (p)
+        {
+            p->next = hosts->hosts;
+            hosts->hosts = p;
+        }
+    }
+    yaz_mutex_leave(hosts->mutex);
+    return p;
 }
 
 int resolve_database(struct conf_service *service, struct database *db)
@@ -129,7 +126,8 @@ int resolve_database(struct conf_service *service, struct database *db)
         strcpy(hostport, db->url);
         if ((p = strchr(hostport, '/')))
             *p = '\0';
-        if (!(host = find_host(hostport, service->server->iochan_man)))
+        if (!(host = find_host(service->server->database_hosts,
+                               hostport, service->server->iochan_man)))
             return -1;
         db->host = host;
     }
@@ -148,6 +146,7 @@ struct database *new_database(const char *id, NMEM nmem)
     struct database *db;
     char hostport[256];
     char *dbname;
+    char *db_comment;
     struct setting *idset;
 
     if (strlen(id) > 255)
@@ -157,6 +156,9 @@ struct database *new_database(const char *id, NMEM nmem)
         *(dbname++) = '\0';
     else
         dbname = "";
+    db_comment = strchr(dbname, '#');
+    if (db_comment)
+        *db_comment = '\0';
     db = nmem_malloc(nmem, sizeof(*db));
     memset(db, 0, sizeof(*db));
     db->host = 0;
@@ -167,7 +169,7 @@ struct database *new_database(const char *id, NMEM nmem)
     db->errors = 0;
     db->explain = 0;
 
-    db->num_settings = PZ_NEGOTIATION_CHARSET+1;
+    db->num_settings = PZ_MAX_EOF;
     db->settings = nmem_malloc(nmem, sizeof(struct settings*) * 
                                db->num_settings);
     memset(db->settings, 0, sizeof(struct settings*) * db->num_settings);
@@ -187,15 +189,7 @@ static struct database *load_database(const char *id,
 {
     struct database *db;
     struct zr_explain *explain = 0;
-    xmlDoc *doc = 0;
 
-    if (service->targetprofiles 
-        && (doc = get_explain_xml(service->targetprofiles, id)))
-    {
-        explain = zr_read_xml(service->nmem, xmlDocGetRootElement(doc));
-        if (!explain)
-            return 0;
-    }
     db = new_database(id, service->nmem);
     db->explain = explain;
     db->next = service->databases;
@@ -388,6 +382,35 @@ int predef_grep_databases(void *context, struct conf_service *service,
     return i;
 }
 
+database_hosts_t database_hosts_create(void)
+{
+    database_hosts_t p = xmalloc(sizeof(*p));
+    p->hosts = 0;
+    p->mutex = 0;
+    pazpar2_mutex_create(&p->mutex, "database");
+    return p;
+}
+
+void database_hosts_destroy(database_hosts_t *pp)
+{
+    if (*pp)
+    {
+        struct host *p = (*pp)->hosts;
+        while (p)
+        {
+            struct host *p_next = p->next;
+            yaz_mutex_destroy(&p->mutex);
+            yaz_cond_destroy(&p->cond_ready);
+            xfree(p->ipport);
+            xfree(p->hostport);
+            xfree(p);
+            p = p_next;
+        }
+        yaz_mutex_destroy(&(*pp)->mutex);
+        xfree(*pp);
+    }
+}
+
 /*
  * Local variables:
  * c-basic-offset: 4