99/be9733e86f841169314a9aa58a86a8d71177ef

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  27 From: David Bremner <david@tethera.net>\r
  28 To: notmuch@notmuchmail.org\r
  29 Subject: [Patch v6 5/6] notmuch-new: backup tags before database upgrade\r
  30 Date: Thu,  3 Apr 2014 16:41:22 -0300\r
  31 Message-Id: <1396554083-3892-6-git-send-email-david@tethera.net>\r
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  34 References: <1396554083-3892-1-git-send-email-david@tethera.net>\r
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  48 \r
  49 All we do here is calculate the backup filename, and call the existing\r
  50 dump routine.\r
  51 \r
  52 Also take the opportity to add a message about being safe to\r
  53 interrupt.\r
  54 ---\r
  55  notmuch-new.c        | 29 ++++++++++++++++++++++++++++-\r
  56  test/T530-upgrade.sh |  4 +++-\r
  57  2 files changed, 31 insertions(+), 2 deletions(-)\r
  58 \r
  59 diff --git a/notmuch-new.c b/notmuch-new.c\r
  60 index 82acf69..d269c7c 100644\r
  61 --- a/notmuch-new.c\r
  62 +++ b/notmuch-new.c\r
  63 @@ -989,8 +989,35 @@ notmuch_new_command (notmuch_config_t *config, int argc, char *argv[])\r
  64             return EXIT_FAILURE;\r
  65  \r
  66         if (notmuch_database_needs_upgrade (notmuch)) {\r
  67 -           if (add_files_state.verbosity >= VERBOSITY_NORMAL)\r
  68 +           time_t now = time (NULL);\r
  69 +           struct tm *gm_time = gmtime (&now);\r
  70 +\r
  71 +           /* since dump files are written atomically, the amount of\r
  72 +            * harm from overwriting one within a second seems\r
  73 +            * relatively small. */\r
  74 +\r
  75 +           const char *backup_name =\r
  76 +               talloc_asprintf (notmuch, "%s/dump-%04d%02d%02dT%02d%02d%02d.gz",\r
  77 +                                dot_notmuch_path,\r
  78 +                                gm_time->tm_year + 1900,\r
  79 +                                gm_time->tm_mon + 1,\r
  80 +                                gm_time->tm_mday,\r
  81 +                                gm_time->tm_hour,\r
  82 +                                gm_time->tm_min,\r
  83 +                                gm_time->tm_sec);\r
  84 +\r
  85 +           if (add_files_state.verbosity >= VERBOSITY_NORMAL) {\r
  86                 printf ("Welcome to a new version of notmuch! Your database will now be upgraded.\n");\r
  87 +               printf ("This process is safe to interrupt.\n");\r
  88 +               printf ("Backing up tags to %s...\n", backup_name);\r
  89 +           }\r
  90 +\r
  91 +           if (notmuch_database_dump (notmuch, backup_name, "",\r
  92 +                                      DUMP_FORMAT_BATCH_TAG, TRUE)) {\r
  93 +               fprintf (stderr, "Backup failed. Aborting upgrade.");\r
  94 +               return EXIT_FAILURE;\r
  95 +           }\r
  96 +\r
  97             gettimeofday (&add_files_state.tv_start, NULL);\r
  98             notmuch_database_upgrade (notmuch,\r
  99                                       add_files_state.verbosity >= VERBOSITY_NORMAL ? upgrade_print_progress : NULL,\r
 100 diff --git a/test/T530-upgrade.sh b/test/T530-upgrade.sh\r
 101 index 67bbf31..d46e3d1 100755\r
 102 --- a/test/T530-upgrade.sh\r
 103 +++ b/test/T530-upgrade.sh\r
 104 @@ -26,9 +26,11 @@ output=$(notmuch search path:foo)\r
 105  test_expect_equal "$output" ""\r
 106  \r
 107  test_begin_subtest "database upgrade from format version 1"\r
 108 -output=$(notmuch new)\r
 109 +output=$(notmuch new | sed -e 's/^Backing up tags to .*$/Backing up tags to FILENAME/')\r
 110  test_expect_equal "$output" "\\r
 111  Welcome to a new version of notmuch! Your database will now be upgraded.\r
 112 +This process is safe to interrupt.\r
 113 +Backing up tags to FILENAME\r
 114  Your notmuch database has now been upgraded to database format version 2.\r
 115  No new mail."\r
 116  \r
 117 -- \r
 118 1.9.0\r
 119 \r