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/* node-origins-table.c : operations on the `node-origins' table
*
* ====================================================================
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
* ====================================================================
*/
#include "bdb_compat.h"
#include "../fs.h"
#include "../err.h"
#include "../id.h"
#include "dbt.h"
#include "../trail.h"
#include "bdb-err.h"
#include "../../libsvn_fs/fs-loader.h"
#include "node-origins-table.h"
#include "svn_private_config.h"
int svn_fs_bdb__open_node_origins_table(DB **node_origins_p,
DB_ENV *env,
svn_boolean_t create)
{
const u_int32_t open_flags = (create ? (DB_CREATE | DB_EXCL) : 0);
DB *node_origins;
int error;
BDB_ERR(svn_fs_bdb__check_version());
BDB_ERR(db_create(&node_origins, env, 0));
error = (node_origins->open)(SVN_BDB_OPEN_PARAMS(node_origins, NULL),
"node-origins", 0, DB_BTREE,
open_flags, 0666);
/* Create the node-origins table if it doesn't exist. */
if (error == ENOENT && (! create))
{
BDB_ERR(node_origins->close(node_origins, 0));
return svn_fs_bdb__open_node_origins_table(node_origins_p, env, TRUE);
}
BDB_ERR(error);
*node_origins_p = node_origins;
return 0;
}
svn_error_t *svn_fs_bdb__get_node_origin(const svn_fs_id_t **origin_id,
svn_fs_t *fs,
const char *node_id,
trail_t *trail,
apr_pool_t *pool)
{
base_fs_data_t *bfd = fs->fsap_data;
DBT key, value;
int db_err;
svn_fs_base__trail_debug(trail, "node-origins", "get");
db_err = bfd->node_origins->get(bfd->node_origins, trail->db_txn,
svn_fs_base__str_to_dbt(&key, node_id),
svn_fs_base__result_dbt(&value), 0);
svn_fs_base__track_dbt(&value, pool);
if (db_err == DB_NOTFOUND)
return svn_fs_base__err_no_such_node_origin(fs, node_id);
*origin_id = svn_fs_base__id_parse(value.data, value.size, pool);
return SVN_NO_ERROR;
}
svn_error_t *svn_fs_bdb__set_node_origin(svn_fs_t *fs,
const char *node_id,
const svn_fs_id_t *origin_id,
trail_t *trail,
apr_pool_t *pool)
{
base_fs_data_t *bfd = fs->fsap_data;
DBT key, value;
int db_err;
/* Create a key from our NODE_ID. */
svn_fs_base__str_to_dbt(&key, node_id);
/* Check to see if we already have a mapping for NODE_ID. If so,
and the value is the same one we were about to write. That's
cool -- just do nothing. If, however, the value is *different*,
that's a red flag! */
svn_fs_base__trail_debug(trail, "node-origins", "get");
db_err = bfd->node_origins->get(bfd->node_origins, trail->db_txn,
&key, svn_fs_base__result_dbt(&value), 0);
svn_fs_base__track_dbt(&value, pool);
if (db_err != DB_NOTFOUND)
{
const svn_string_t *origin_id_str =
svn_fs_base__id_unparse(origin_id, pool);
const svn_string_t *old_origin_id_str =
svn_string_ncreate(value.data, value.size, pool);
if (! svn_string_compare(origin_id_str, old_origin_id_str))
return svn_error_createf
(SVN_ERR_FS_CORRUPT, NULL,
_("Node origin for '%s' exists in filesystem '%s' with a different "
"value (%s) than what we were about to store (%s)"),
node_id, fs->path, old_origin_id_str->data, origin_id_str->data);
else
return SVN_NO_ERROR;
}
/* Create a value from our ORIGIN_ID, and add this record to the table. */
svn_fs_base__id_to_dbt(&value, origin_id, pool);
svn_fs_base__trail_debug(trail, "node-origins", "put");
return BDB_WRAP(fs, N_("storing node-origins record"),
bfd->node_origins->put(bfd->node_origins, trail->db_txn,
&key, &value, 0));
}
svn_error_t *svn_fs_bdb__delete_node_origin(svn_fs_t *fs,
const char *node_id,
trail_t *trail,
apr_pool_t *pool)
{
base_fs_data_t *bfd = fs->fsap_data;
DBT key;
svn_fs_base__str_to_dbt(&key, node_id);
svn_fs_base__trail_debug(trail, "node-origins", "del");
return BDB_WRAP(fs, N_("deleting entry from 'node-origins' table"),
bfd->node_origins->del(bfd->node_origins,
trail->db_txn, &key, 0));
}
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