subversion/libsvn_fs_base/uuid.c

   1 /* uuid.c : operations on repository uuids
   2  *
   3  * ====================================================================
   4  * Copyright (c) 2000-2004 CollabNet.  All rights reserved.
   5  *
   6  * This software is licensed as described in the file COPYING, which
   7  * you should have received as part of this distribution.  The terms
   8  * are also available at http://subversion.tigris.org/license-1.html.
   9  * If newer versions of this license are posted there, you may use a
  10  * newer version instead, at your option.
  11  *
  12  * This software consists of voluntary contributions made by many
  13  * individuals.  For exact contribution history, see the revision
  14  * history and logs, available at http://subversion.tigris.org/.
  15  * ====================================================================
  16  */
  17
  18 #include <assert.h>
  19
  20 #include "fs.h"
  21 #include "trail.h"
  22 #include "err.h"
  23 #include "uuid.h"
  24 #include "bdb/uuids-table.h"
  25 #include "../libsvn_fs/fs-loader.h"
  26
  27 #include "private/svn_fs_util.h"
  28
  29
  30 struct get_uuid_args
  31 {
  32   int idx;
  33   const char **uuid;
  34 };
  35
  36
  37 static svn_error_t *
  38 txn_body_get_uuid(void *baton, trail_t *trail)
  39 {
  40   struct get_uuid_args *args = baton;
  41   return svn_fs_bdb__get_uuid(trail->fs, args->idx, args->uuid,
  42                               trail, trail->pool);
  43 }
  44
  45
  46 svn_error_t *
  47 svn_fs_base__get_uuid(svn_fs_t *fs,
  48                       const char **uuid,
  49                       apr_pool_t *pool)
  50 {
  51   base_fs_data_t *bfd = fs->fsap_data;
  52
  53   SVN_ERR(svn_fs__check_fs(fs, TRUE));
  54
  55   /* Check for a cached UUID first.  Failing that, we hit the
  56      database. */
  57   if (bfd->uuid)
  58     {
  59       *uuid = apr_pstrdup(pool, bfd->uuid);
  60     }
  61   else
  62     {
  63       struct get_uuid_args args;
  64       args.idx = 1;
  65       args.uuid = uuid;
  66       SVN_ERR(svn_fs_base__retry_txn(fs, txn_body_get_uuid, &args, pool));
  67
  68       /* Toss what we find into the cache. */
  69       if (*uuid)
  70         bfd->uuid = apr_pstrdup(fs->pool, *uuid);
  71     }
  72
  73   return SVN_NO_ERROR;
  74 }
  75
  76
  77 struct set_uuid_args
  78 {
  79   int idx;
  80   const char *uuid;
  81 };
  82
  83
  84 static svn_error_t *
  85 txn_body_set_uuid(void *baton, trail_t *trail)
  86 {
  87   struct set_uuid_args *args = baton;
  88   return svn_fs_bdb__set_uuid(trail->fs, args->idx, args->uuid,
  89                               trail, trail->pool);
  90 }
  91
  92
  93 svn_error_t *
  94 svn_fs_base__set_uuid(svn_fs_t *fs,
  95                       const char *uuid,
  96                       apr_pool_t *pool)
  97 {
  98   struct set_uuid_args args;
  99   base_fs_data_t *bfd = fs->fsap_data;
 100
 101   SVN_ERR(svn_fs__check_fs(fs, TRUE));
 102
 103   if (! uuid)
 104     uuid = svn_uuid_generate(pool);
 105
 106   args.idx = 1;
 107   args.uuid = uuid;
 108   SVN_ERR(svn_fs_base__retry_txn(fs, txn_body_set_uuid, &args, pool));
 109
 110   /* Toss our value into the cache. */
 111   if (uuid)
 112     bfd->uuid = apr_pstrdup(fs->pool, uuid);
 113
 114   return SVN_NO_ERROR;
 115 }
 116