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/* $Id$ */
/***
This file is part of syrep.
syrep 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 Software Foundation; either version 2 of the License, or
(at your option) any later version.
syrep is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
License for more details.
You should have received a copy of the GNU General Public License
along with syrep; if not, write to the Free Software Foundation,
Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
***/
#include <string.h>
#include <assert.h>
#include <time.h>
#include "dbutil.h"
#include "util.h"
int get_meta_by_name_md(struct syrep_db_context *c, const struct syrep_name*name, const struct syrep_md *md, struct syrep_meta *meta) {
int ret;
struct syrep_id id;
DBT key, data;
assert(c && c->db_id_meta && name);
memset(&id, 0, sizeof(id));
memcpy(&id.name, name, sizeof(struct syrep_name));
memcpy(&id.md, md, sizeof(struct syrep_md));
memset(&key, 0, sizeof(key));
memset(&data, 0, sizeof(data));
key.data = &id;
key.size = sizeof(struct syrep_id);
if ((ret = c->db_id_meta->get(c->db_id_meta, NULL, &key, &data, 0))) {
if (ret == DB_NOTFOUND)
return 0;
c->db_id_meta->err(c->db_id_meta, ret, "id_meta::get");
return -1;
}
assert(data.data);
if (meta)
memcpy(meta, data.data, sizeof(struct syrep_meta));
return 1;
}
int get_current_name_by_md(struct syrep_db_context *c, const struct syrep_md *md, struct syrep_name *name) {
int ret, f;
struct syrep_meta meta;
DBT key, data;
memset(&key, 0, sizeof(key));
memset(&data, 0, sizeof(data));
key.data = (void*) md;
key.size = sizeof(struct syrep_md);
if ((ret = c->db_md_lastname->get(c->db_md_lastname, NULL, &key, &data, 0))) {
if (ret == DB_NOTFOUND)
return 0;
c->db_md_lastname->err(c->db_md_lastname, ret, "md_lastname::get()");
return -1;
}
assert(data.data);
if ((f = get_meta_by_name_md(c, (struct syrep_name*) data.data, md, &meta)) < 0)
return -1;
if (!f) {
fprintf(stderr, "Database inconsistency\n");
return -1;
}
if (meta.last_seen != c->version)
return 0;
if (name)
memcpy(name, data.data, sizeof(struct syrep_name));
return 1;
}
int get_last_md_by_name(struct syrep_db_context *c, const struct syrep_name *name, struct syrep_md *md) {
int ret;
DBT key, data;
memset(&key, 0, sizeof(key));
memset(&data, 0, sizeof(data));
key.data = (void*) name;
key.size = sizeof(struct syrep_name);
if ((ret = c->db_name_lastmd->get(c->db_name_lastmd, NULL, &key, &data, 0))) {
if (ret == DB_NOTFOUND) {
return 0;
}
c->db_name_lastmd->err(c->db_name_lastmd, ret, "name_lastmd::get()");
return -1;
}
assert(data.data);
if (md)
memcpy(md, data.data, sizeof(struct syrep_md));
return 1;
}
int get_current_md_by_name(struct syrep_db_context *c, const struct syrep_name *name, struct syrep_md *md) {
struct syrep_md lmd;
struct syrep_meta meta;
int f;
if ((f = get_last_md_by_name(c, name, &lmd)) < 0)
return -1;
if (!f)
return 0;
if ((f = get_meta_by_name_md(c, name, &lmd, &meta)) < 0)
return -1;
if (!f) {
fprintf(stderr, "Database inconsistency\n");
return -1;
}
if (meta.last_seen != c->version)
return 0;
memcpy(md, &lmd, sizeof(struct syrep_md));
return 1;
}
uint32_t get_version_timestamp(struct syrep_db_context *c, uint32_t v) {
DBT key, data;
struct syrep_version version;
struct syrep_timestamp *timestamp;
int ret;
assert(c && c->db_version_timestamp);
if (v > c->version)
return time(NULL);
if (v <= 0)
v = 1;
memset(&version, 0, sizeof(version));
version.v = v;
memset(&key, 0, sizeof(key));
memset(&data, 0, sizeof(data));
key.data = &version;
key.size = sizeof(version);
if ((ret = c->db_version_timestamp->get(c->db_version_timestamp, NULL, &key, &data, 0))) {
c->db_version_timestamp->err(c->db_version_timestamp, ret, "version_timestamp::get");
return (uint32_t) -1;
}
timestamp = (struct syrep_timestamp*) data.data;
assert(timestamp);
return timestamp->t;
}
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