-/* $Id: zebraapi.c,v 1.230 2006-10-12 13:06:00 adam Exp $
+/* $Id: zebraapi.c,v 1.232 2006-11-17 13:47:22 marc Exp $
Copyright (C) 1995-2006
Index Data ApS
else if (poset[i].sysno)
{
char *buf;
- int len;
+ int len = 0;
zebra_snippets *hit_snippet = zebra_snippets_create();
zebra_snippets_hit_vector(zh, setname, poset[i].sysno,
return wrbuf_len(wrbuf);
}
+/** \brief set register state (state*.LCK)
+ \param zh Zebra handle
+ \param val state
+ \param seqno sequence number
+
+ val is one of:
+ d=writing to shadow(dirty)
+ o=no writing,
+ c=commit
+*/
static void zebra_set_state (ZebraHandle zh, int val, int seqno)
{
char state_fname[256];
assert (zh->res);
if (rw)
{
- int pass;
int seqno = 0;
char val = '?';
const char *rval = 0;
if (zh->shadow_enable)
rval = res_get (zh->res, "shadow");
- for (pass = 0; pass < 2; pass++)
+ if (rval)
{
- if (rval)
- {
- zebra_lock_r (zh->lock_normal);
- zebra_lock_w (zh->lock_shadow);
- }
- else
+ zebra_lock_r(zh->lock_normal);
+ zebra_lock_w(zh->lock_shadow);
+ }
+ else
+ {
+ zebra_lock_w(zh->lock_normal);
+ zebra_lock_w(zh->lock_shadow);
+ }
+ zebra_get_state (zh, &val, &seqno);
+ if (val != 'o')
+ {
+ /* either we didn't finish commit or shadow is dirty */
+ zebra_unlock (zh->lock_shadow);
+ zebra_unlock (zh->lock_normal);
+ if (zebra_commit (zh))
{
- zebra_lock_w (zh->lock_normal);
- zebra_lock_w (zh->lock_shadow);
+ zh->trans_no--;
+ zh->trans_w_no = 0;
+ return ZEBRA_FAIL;
}
-
- zebra_get_state (zh, &val, &seqno);
- if (val == 'c')
+ if (rval)
{
- yaz_log (YLOG_WARN, "previous transaction didn't finish commit");
- zebra_unlock (zh->lock_shadow);
- zebra_unlock (zh->lock_normal);
- zebra_commit (zh);
- continue;
+ zebra_lock_r(zh->lock_normal);
+ zebra_lock_w(zh->lock_shadow);
}
- else if (val == 'd')
+ else
{
- if (rval)
- {
- BFiles bfs = bfs_create (res_get (zh->res, "shadow"),
- zh->path_reg);
- yaz_log (YLOG_WARN, "previous transaction didn't reach commit");
- bf_commitClean (bfs, rval);
- bfs_destroy (bfs);
- }
- else
- {
- yaz_log (YLOG_WARN, "your previous transaction didn't finish");
- }
+ zebra_lock_w(zh->lock_normal);
+ zebra_lock_w(zh->lock_shadow);
}
- break;
- }
- if (pass == 2)
- {
- yaz_log (YLOG_FATAL, "zebra_begin_trans couldn't finish commit");
- abort();
- return ZEBRA_FAIL;
}
+
zebra_set_state (zh, 'd', seqno);
zh->reg = zebra_register_open(zh->service, zh->reg_name,
char val;
const char *rval;
BFiles bfs;
+ ZEBRA_RES res = ZEBRA_OK;
+
ASSERTZH;
zebra_select_default_database(zh);
zh->errCode = YAZ_BIB1_DATABASE_UNAVAILABLE;
return ZEBRA_FAIL;
}
- rval = res_get (zh->res, "shadow");
+ rval = res_get(zh->res, "shadow");
if (!rval)
{
yaz_log (YLOG_WARN, "Cannot perform commit - No shadow area defined");
return ZEBRA_OK;
}
- zebra_lock_w (zh->lock_normal);
- zebra_lock_r (zh->lock_shadow);
+ zebra_lock_w(zh->lock_normal);
+ zebra_lock_r(zh->lock_shadow);
- bfs = bfs_create (res_get (zh->res, "register"), zh->path_reg);
+ bfs = bfs_create(res_get (zh->res, "register"), zh->path_reg);
if (!bfs)
{
zebra_unlock(zh->lock_shadow);
zebra_unlock(zh->lock_normal);
return ZEBRA_FAIL;
}
- zebra_get_state (zh, &val, &seqno);
+ zebra_get_state(zh, &val, &seqno);
if (val == 'd')
{
if (bf_commitExists (bfs))
{
if (clean_only)
- zebra_set_state (zh, 'd', seqno);
+ zebra_set_state(zh, 'd', seqno);
else
{
- zebra_set_state (zh, 'c', seqno);
+ zebra_set_state(zh, 'c', seqno);
- yaz_log (YLOG_DEBUG, "commit start");
- bf_commitExec (bfs);
+ yaz_log(YLOG_DEBUG, "commit start");
+ if (bf_commitExec (bfs))
+ res = ZEBRA_FAIL;
+ }
+ if (res == ZEBRA_OK)
+ {
+ seqno++;
+ zebra_set_state(zh, 'o', seqno);
+
+ zebra_unlock(zh->lock_shadow);
+ zebra_unlock(zh->lock_normal);
+
+ zebra_lock_w(zh->lock_shadow);
+ bf_commitClean(bfs, rval);
+ zebra_unlock(zh->lock_shadow);
+ }
+ else
+ {
+ zebra_unlock(zh->lock_shadow);
+ zebra_unlock(zh->lock_normal);
+ yaz_log(YLOG_WARN, "zebra_commit: failed");
}
- seqno++;
- zebra_set_state (zh, 'o', seqno);
-
- zebra_unlock (zh->lock_shadow);
- zebra_unlock (zh->lock_normal);
-
- zebra_lock_w(zh->lock_shadow);
- bf_commitClean (bfs, rval);
- zebra_unlock (zh->lock_shadow);
}
else
{
zebra_unlock(zh->lock_shadow);
zebra_unlock(zh->lock_normal);
- yaz_log (log_level, "nothing to commit");
+ yaz_log(log_level, "nothing to commit");
}
- bfs_destroy (bfs);
+ bfs_destroy(bfs);
- return ZEBRA_OK;
+ return res;
}
ZEBRA_RES zebra_clean(ZebraHandle zh)