cli: volume status enhancement

    * Support "gluster volume status (all)" option to display all
      volumes' status.

    * On option "detail" appended to "gluster volume status *",
      amount of storage free, total storage, and backend filesystem
      details like inode size, inode count, free inodes, fs type,
      device name of each brick is displayed.

    * One can also obtain [detailed]status of only one brick.

    * Format of the enhanced volume status command is:
      "gluster volume status [all|<vol>] [<brick>] [detail]"

    * Some generic functions have been added to common-utils:

           skipword
           get_nth_word
      These functions enable parsing and fetching
      of words in a sentence.

           glusterd_get_brick_root    (in glusterd)
      These are self explanatory.

Change-Id: I6f40c1e19810f8504cd3b1786207364053d82e28
BUG: 765464
Signed-off-by: Rajesh Amaravathi <rajesh@redhat.com>
Reviewed-on: http://review.gluster.com/777
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Amar Tumballi <amar@gluster.com>

1 files changed, 66 insertions, 5 deletions

diff --git a/cli/src/cli-cmd-parser.c b/cli/src/cli-cmd-parser.c
index fa46fa06671..acbd960ba43 100644
--- a/cli/src/cli-cmd-parser.c
+++ b/cli/src/cli-cmd-parser.c
@@ -1795,23 +1795,84 @@ out:
         return ret;
 }
 
-int32_t
+int
 cli_cmd_volume_status_parse (const char **words, int wordcount,
-                                dict_t **options)
+                             dict_t **options)
 {
         dict_t *dict            = NULL;
         int     ret             = -1;
+        int     cmd             = 0;
 
-        GF_ASSERT (words);
         GF_ASSERT (options);
 
         dict = dict_new ();
         if (!dict)
                 goto out;
 
-        GF_ASSERT(words[2]);
+        switch (wordcount) {
+
+        case 2:
+                cmd = GF_CLI_STATUS_ALL;
+                ret = 0;
+                break;
+
+        case 3:
+                if (!strcmp (words[2], "all")) {
+
+                        cmd = GF_CLI_STATUS_ALL;
+                        ret = 0;
+
+                } else if (!strcmp (words[2], "detail")) {
+
+                        cmd = GF_CLI_STATUS_ALL_DETAIL;
+                        ret = 0;
+
+                } else {
+                        cmd = GF_CLI_STATUS_VOL;
+                        ret = dict_set_str (dict, "volname", (char *)words[2]);
+                }
+                break;
+
+        case 4:
+                if (!strcmp (words[2], "all") &&
+                    !strcmp (words[3], "detail")) {
+
+                        cmd = GF_CLI_STATUS_ALL_DETAIL;
+                        ret = 0;
+
+                } else if (!strcmp (words[3], "detail")) {
+                        cmd = GF_CLI_STATUS_VOL_DETAIL;
+                        ret = dict_set_str (dict, "volname", (char *)words[2]);
+
+                } else {
+
+                        cmd = GF_CLI_STATUS_BRICK;
+                        ret = dict_set_str (dict, "volname", (char *)words[2]);
+                        if (ret)
+                                goto out;
+                        ret = dict_set_str (dict, "brick", (char *)words[3]);
+                }
+                break;
+
+        case 5:
+                if (strcmp (words[4], "detail"))
+                        goto out;
+
+                cmd = GF_CLI_STATUS_BRICK_DETAIL;
+                ret = dict_set_str (dict, "volname", (char *)words[2]);
+                if (ret)
+                        goto out;
+                ret = dict_set_str (dict, "brick", (char *)words[3]);
+                break;
+
+        default:
+                goto out;
+        }
+
+        if (ret)
+                goto out;
 
-        ret = dict_set_str (dict, "volname", (char *)words[2]);
+        ret = dict_set_int32 (dict, "cmd", cmd);
         if (ret)
                 goto out;