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/** BEGIN COPYRIGHT BLOCK
* Copyright (C) 2001 Sun Microsystems, Inc. Used by permission.
* Copyright (C) 2005 Red Hat, Inc.
* All rights reserved.
*
* License: GPL (version 3 or any later version).
* See LICENSE for details.
* END COPYRIGHT BLOCK **/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
/*
* start.c
*/
#include "back-ldbm.h"
#include "dblayer.h"
static int initialized = 0;
int
ldbm_back_isinitialized()
{
return initialized;
}
/*
* Start the LDBM plugin, and all its instances.
*/
int
ldbm_back_start(Slapi_PBlock *pb)
{
struct ldbminfo *li;
int retval = 0;
dblayer_private *priv = NULL;
slapi_log_err(SLAPI_LOG_TRACE, "ldbm_back_start", "ldbm backend starting\n");
slapi_pblock_get(pb, SLAPI_PLUGIN_PRIVATE, &li);
/* initialize dblayer */
if( dblayer_setup(li)) {
slapi_log_err(SLAPI_LOG_ERR, "ldbm_back_start", "Failed to setup dblayer\n");
return SLAPI_FAIL_GENERAL;
}
/* register with the binder-based resource limit subsystem so that */
/* lookthroughlimit can be supported on a per-connection basis. */
if (slapi_reslimit_register(SLAPI_RESLIMIT_TYPE_INT,
LDBM_LOOKTHROUGHLIMIT_AT, &li->li_reslimit_lookthrough_handle) != SLAPI_RESLIMIT_STATUS_SUCCESS) {
slapi_log_err(SLAPI_LOG_ERR, "ldbm_back_start", "Resource limit registration failed for lookthroughlimit\n");
return SLAPI_FAIL_GENERAL;
}
/* register with the binder-based resource limit subsystem so that */
/* allidslimit (aka idlistscanlimit) can be supported on a per-connection basis. */
if (slapi_reslimit_register(SLAPI_RESLIMIT_TYPE_INT,
LDBM_ALLIDSLIMIT_AT, &li->li_reslimit_allids_handle) != SLAPI_RESLIMIT_STATUS_SUCCESS) {
slapi_log_err(SLAPI_LOG_ERR, "ldbm_back_start", "Resource limit registration failed for allidslimit\n");
return SLAPI_FAIL_GENERAL;
}
/* register with the binder-based resource limit subsystem so that */
/* pagedlookthroughlimit can be supported on a per-connection basis. */
if (slapi_reslimit_register(SLAPI_RESLIMIT_TYPE_INT,
LDBM_PAGEDLOOKTHROUGHLIMIT_AT, &li->li_reslimit_pagedlookthrough_handle) != SLAPI_RESLIMIT_STATUS_SUCCESS) {
slapi_log_err(SLAPI_LOG_ERR, "ldbm_back_start", "Resource limit registration failed for pagedlookthroughlimit\n");
return SLAPI_FAIL_GENERAL;
}
/* register with the binder-based resource limit subsystem so that */
/* pagedallidslimit (aka idlistscanlimit) can be supported on a per-connection basis. */
if (slapi_reslimit_register(SLAPI_RESLIMIT_TYPE_INT,
LDBM_PAGEDALLIDSLIMIT_AT, &li->li_reslimit_pagedallids_handle) != SLAPI_RESLIMIT_STATUS_SUCCESS) {
slapi_log_err(SLAPI_LOG_ERR, "ldbm_back_start", "Resource limit registration failed for pagedallidslimit\n");
return SLAPI_FAIL_GENERAL;
}
/* lookthrough limit for the rangesearch */
if (slapi_reslimit_register(SLAPI_RESLIMIT_TYPE_INT,
LDBM_RANGELOOKTHROUGHLIMIT_AT, &li->li_reslimit_rangelookthrough_handle) != SLAPI_RESLIMIT_STATUS_SUCCESS) {
slapi_log_err(SLAPI_LOG_ERR, "ldbm_back_start", "Resource limit registration failed for rangelookthroughlimit\n");
return SLAPI_FAIL_GENERAL;
}
/* If the db directory hasn't been set yet, we need to set it to
* the default. */
if (NULL == li->li_directory || '\0' == li->li_directory[0]) {
/* "get default" is a special string that tells the config
* routines to figure out the default db directory by
* reading cn=config. */
ldbm_config_internal_set(li, CONFIG_DIRECTORY, "get default");
}
/* We are autotuning the caches. was:
* retval = ldbm_back_start_autotune(li);
* This involves caches specific to instances managed in the ldbm layer
* and to caches specific to the db implementation.
* The cache usage and requirements of the db is not known here, also it
* might have impact on the sizing of the instance caches.
* Therfor this functionality is moved to the db_xxx layer.
* The latest autotune function was implemented only with BDB in mind
* so it should be safe to move it to db_bdb.
*/
priv = (dblayer_private *)li->li_dblayer_private;
retval = priv->dblayer_auto_tune_fn(li);
if (retval != 0) {
slapi_log_err(SLAPI_LOG_ERR, "ldbm_back_start", "Failed to set database tuning on backends\n");
return SLAPI_FAIL_GENERAL;
}
retval = dblayer_start(li, DBLAYER_NORMAL_MODE);
if (0 != retval) {
const char *msg;
slapi_log_err(SLAPI_LOG_ERR, "ldbm_back_start", "Failed to init database, err=%d %s\n",
retval, (msg = dblayer_strerror(retval)) ? msg : "");
if (LDBM_OS_ERR_IS_DISKFULL(retval))
return return_on_disk_full(li);
else
return SLAPI_FAIL_GENERAL;
}
/* Walk down the instance list, starting all the instances. */
retval = ldbm_instance_startall(li);
if (0 != retval) {
const char *msg;
slapi_log_err(SLAPI_LOG_ERR, "ldbm_back_start", "Failed to start databases, err=%d %s\n",
retval, (msg = dblayer_strerror(retval)) ? msg : "");
if (LDBM_OS_ERR_IS_DISKFULL(retval))
return return_on_disk_full(li);
else {
if ((li->li_cache_autosize > 0) && (li->li_cache_autosize <= 100)) {
/* NOTE (LK): there are two problems with the following error message:
* First it reports a dbcache size which might not be available for
* all backend implementations.
* Second, there are many error conditions in ldbm_instance_startall
* which can result in retval != 0, so it might be misleading.
* For now do not change it, use a generic function to get db config
* params, but need to think about it
*
slapi_log_err(SLAPI_LOG_ERR, "ldbm_back_start", "Failed to allocate %" PRIu64 " byte dbcache. "
"Please reduce the value of %s and restart the server.\n",
li->li_dbcachesize, CONFIG_CACHE_AUTOSIZE);
*/
char dbcachesize[BUFSIZ];
priv->dblayer_config_get_fn(li, CONFIG_DBCACHESIZE, dbcachesize);
slapi_log_err(SLAPI_LOG_ERR, "ldbm_back_start", "Failed to allocate %s byte dbcache. "
"Please reduce the value of %s and restart the server.\n",
dbcachesize, CONFIG_CACHE_AUTOSIZE);
}
return SLAPI_FAIL_GENERAL;
}
}
/* this function is called every time new db is initialized */
/* currently it is called the 2nd time when changelog db is */
/* dynamically created. Code below should only be called once */
if (!initialized) {
ldbm_compute_init();
initialized = 1;
}
/* initialize the USN counter */
ldbm_usn_init(li);
slapi_log_err(SLAPI_LOG_TRACE, "ldbm_back_start", "ldbm backend done starting\n");
return (0);
}
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