cli: remove duplication of cmd help

Signed-off-by: Pranith Kumar K <pranithk@gluster.com>
Signed-off-by: Anand V. Avati <avati@dev.gluster.com>

BUG: 2089 (Documentation bug in replace-brick options)
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=2089

6 files changed, 46 insertions, 166 deletions

diff --git a/cli/src/cli-cmd-peer.c b/cli/src/cli-cmd-peer.c
index 1f3ee624083..dc361f539b6 100644
--- a/cli/src/cli-cmd-peer.c
+++ b/cli/src/cli-cmd-peer.c
@@ -40,24 +40,6 @@ extern rpc_clnt_prog_t *cli_rpc_prog;
 int cli_cmd_peer_help_cbk (struct cli_state *state, struct cli_cmd_word *in_word,
                       const char **words, int wordcount);
 
-void
-cli_cmd_probe_usage ()
-{
-        cli_out ("Usage: probe <hostname>");
-}
-
-void
-cli_cmd_deprobe_usage ()
-{
-        cli_out ("Usage: detach <hostname>");
-}
-
-void
-cli_cmd_peer_status_usage ()
-{
-        cli_out ("Usage: peer status");
-}
-
 int
 cli_cmd_peer_probe_cbk (struct cli_state *state, struct cli_cmd_word *word,
                    const char **words, int wordcount)
@@ -68,7 +50,7 @@ cli_cmd_peer_probe_cbk (struct cli_state *state, struct cli_cmd_word *word,
         dict_t                  *dict = NULL;
 
         if (!(wordcount == 3)) {
-                cli_cmd_probe_usage ();
+                cli_usage_out (word->pattern);
                 goto out;
         }
 
@@ -113,7 +95,7 @@ cli_cmd_peer_deprobe_cbk (struct cli_state *state, struct cli_cmd_word *word,
         dict_t               *dict  = NULL;
 
         if (!(wordcount == 3) ) {
-                cli_cmd_deprobe_usage ();
+                cli_usage_out (word->pattern);
                 goto out;
         }
 
@@ -152,7 +134,7 @@ cli_cmd_peer_status_cbk (struct cli_state *state, struct cli_cmd_word *word,
         call_frame_t            *frame = NULL;
 
         if (wordcount != 2) {
-                cli_cmd_peer_status_usage ();
+                cli_usage_out (word->pattern);
                 goto out;
         }
 
diff --git a/cli/src/cli-cmd-system.c b/cli/src/cli-cmd-system.c
index 0c1b6d267c5..e92376cef8a 100644
--- a/cli/src/cli-cmd-system.c
+++ b/cli/src/cli-cmd-system.c
@@ -129,14 +129,8 @@ out:
         return ret;
 }
 
-void
-cli_cmd_fsm_log_usage ()
-{
-	cli_out ("Usage: fsm log [<peer-name>]");
-}
-
 int
-cli_cmd_fsm_log (struct cli_state *state, struct cli_cmd_word *in_word,
+cli_cmd_fsm_log (struct cli_state *state, struct cli_cmd_word *word,
                  const char **words, int wordcount)
 {
         int                             ret = -1;
@@ -145,7 +139,7 @@ cli_cmd_fsm_log (struct cli_state *state, struct cli_cmd_word *in_word,
         char                            *name = "";
 
         if ((wordcount != 3) && (wordcount != 2)) {
-                cli_cmd_fsm_log_usage ();
+                cli_usage_out (word->pattern);
                 goto out;
         }
 
diff --git a/cli/src/cli-cmd-volume.c b/cli/src/cli-cmd-volume.c
index ef62e14f962..3f671a63a62 100644
--- a/cli/src/cli-cmd-volume.c
+++ b/cli/src/cli-cmd-volume.c
@@ -41,48 +41,6 @@ int
 cli_cmd_volume_help_cbk (struct cli_state *state, struct cli_cmd_word *in_word,
                       const char **words, int wordcount);
 
-void
-cli_cmd_volume_start_usage ()
-{
-        cli_out ("Usage: volume start <VOLNAME> [force]");
-}
-
-void
-cli_cmd_volume_stop_usage ()
-{
-        cli_out ("Usage: volume stop <VOLNAME> [force]");
-}
-
-void
-cli_cmd_volume_rename_usage ()
-{
-        cli_out ("Usage: volume rename <VOLNAME> <NEW-VOLNAME>");
-}
-
-void
-cli_cmd_volume_delete_usage ()
-{
-        cli_out ("Usage: volume delete <VOLNAME>");
-}
-
-void
-cli_cmd_volume_info_usage ()
-{
-        cli_out ("Usage: volume info [all|<VOLNAME>]");
-}
-
-void
-cli_cmd_volume_reset_usage ()
-{
-        cli_out ("Usage: volume reset <VOLNAME> ");
-}
-
-void
-cli_cmd_volume_set_usage ()
-{
-	cli_out ("Usage: volume set <VOLNAME> <KEY> <VALUE>");
-}
-
 int
 cli_cmd_volume_info_cbk (struct cli_state *state, struct cli_cmd_word *word,
                          const char **words, int wordcount)
@@ -112,7 +70,7 @@ cli_cmd_volume_info_cbk (struct cli_state *state, struct cli_cmd_word *word,
                 }
                 proc = &cli_rpc_prog->proctable[GF1_CLI_GET_VOLUME];
         } else {
-                cli_cmd_volume_info_usage ();
+                cli_usage_out (word->pattern);
                 return -1;
         }
 
@@ -138,13 +96,6 @@ out:
 
 }
 
-
-void
-cli_cmd_sync_volume_usage ()
-{
-        cli_out ("Usage: volume sync <HOSTNAME> [all|<VOLNAME>]");
-}
-
 int
 cli_cmd_sync_volume_cbk (struct cli_state *state, struct cli_cmd_word *word,
                          const char **words, int wordcount)
@@ -155,7 +106,7 @@ cli_cmd_sync_volume_cbk (struct cli_state *state, struct cli_cmd_word *word,
         gf1_cli_sync_volume_req req = {0,};
 
         if ((wordcount < 3) || (wordcount > 4)) {
-               cli_cmd_sync_volume_usage ();
+               cli_usage_out (word->pattern);
                goto out;
         }
 
@@ -184,13 +135,6 @@ out:
 
         return ret;
 }
-void
-cli_cmd_volume_create_usage ()
-{
-        cli_out ("Usage: volume create <NEW-VOLNAME> "
-                 "[stripe <COUNT>] [replica <COUNT>] [transport <tcp|rdma>] "
-                 "<NEW-BRICK> ...");
-}
 
 int
 cli_cmd_volume_create_cbk (struct cli_state *state, struct cli_cmd_word *word,
@@ -210,7 +154,7 @@ cli_cmd_volume_create_cbk (struct cli_state *state, struct cli_cmd_word *word,
         ret = cli_cmd_volume_create_parse (words, wordcount, &options);
 
         if (ret) {
-                cli_cmd_volume_create_usage ();
+                cli_usage_out (word->pattern);
                 goto out;
         }
 
@@ -245,7 +189,7 @@ cli_cmd_volume_delete_cbk (struct cli_state *state, struct cli_cmd_word *word,
                 goto out;
 
         if (wordcount != 3) {
-                cli_cmd_volume_delete_usage ();
+                cli_usage_out (word->pattern);
                 goto out;
         }
 
@@ -283,7 +227,7 @@ cli_cmd_volume_start_cbk (struct cli_state *state, struct cli_cmd_word *word,
                 goto out;
 
         if (wordcount < 3 || wordcount > 4) {
-               cli_cmd_volume_start_usage ();
+               cli_usage_out (word->pattern);
                goto out;
         }
 
@@ -296,7 +240,7 @@ cli_cmd_volume_start_cbk (struct cli_state *state, struct cli_cmd_word *word,
                         req.flags |= GF_CLI_FLAG_OP_FORCE;
                 } else {
                         ret = -1;
-                        cli_cmd_volume_start_usage ();
+                        cli_usage_out (word->pattern);
                         goto out;
                 }
         }
@@ -372,7 +316,7 @@ cli_cmd_volume_stop_cbk (struct cli_state *state, struct cli_cmd_word *word,
                 goto out;
 
         if (wordcount < 3 || wordcount > 4) {
-               cli_cmd_volume_stop_usage ();
+               cli_usage_out (word->pattern);
                goto out;
         }
 
@@ -385,7 +329,7 @@ cli_cmd_volume_stop_cbk (struct cli_state *state, struct cli_cmd_word *word,
                         flags |= GF_CLI_FLAG_OP_FORCE;
                 } else {
                         ret = -1;
-                        cli_cmd_volume_stop_usage ();
+                        cli_usage_out (word->pattern);
                         goto out;
                 }
         }
@@ -431,7 +375,7 @@ cli_cmd_volume_rename_cbk (struct cli_state *state, struct cli_cmd_word *word,
                 goto out;
 
         if (wordcount != 4) {
-                cli_cmd_volume_rename_usage ();
+                cli_usage_out (word->pattern);
                 goto out;
         }
 
@@ -462,12 +406,6 @@ out:
         return ret;
 }
 
-void
-cli_cmd_volume_defrag_usage ()
-{
-        cli_out ("Usage: volume rebalance <VOLNAME> <start|stop|status>");
-}
-
 int
 cli_cmd_volume_defrag_cbk (struct cli_state *state, struct cli_cmd_word *word,
                            const char **words, int wordcount)
@@ -486,7 +424,7 @@ cli_cmd_volume_defrag_cbk (struct cli_state *state, struct cli_cmd_word *word,
                 goto out;
 
         if (wordcount != 4) {
-                cli_cmd_volume_defrag_usage();
+                cli_usage_out (word->pattern);
                 goto out;
         }
 
@@ -536,7 +474,7 @@ cli_cmd_volume_reset_cbk (struct cli_state *state, struct cli_cmd_word *word,
         ret = cli_cmd_volume_reset_parse (words, wordcount, &options);
 
         if (ret) {
-                cli_cmd_volume_reset_usage ();
+                cli_usage_out (word->pattern);
                 goto out;
         }
 
@@ -572,7 +510,7 @@ cli_cmd_volume_set_cbk (struct cli_state *state, struct cli_cmd_word *word,
         ret = cli_cmd_volume_set_parse (words, wordcount, &options);
 
         if (ret) {
-                cli_cmd_volume_set_usage ();
+                cli_usage_out (word->pattern);
                 goto out;
         }
 
@@ -588,13 +526,6 @@ out:
 
 }
 
-void
-cli_cmd_volume_add_brick_usage ()
-{
-        cli_out ("Usage: volume add-brick <VOLNAME> "
-                 "<NEW-BRICK> ...");
-}
-
 int
 cli_cmd_volume_add_brick_cbk (struct cli_state *state,
                               struct cli_cmd_word *word, const char **words,
@@ -612,7 +543,7 @@ cli_cmd_volume_add_brick_cbk (struct cli_state *state,
         ret = cli_cmd_volume_add_brick_parse (words, wordcount, &options);
 
         if (ret) {
-                cli_cmd_volume_add_brick_usage ();
+                cli_usage_out (word->pattern);
                 goto out;
         }
 
@@ -635,13 +566,6 @@ out:
 }
 
 
-void
-cli_cmd_volume_remove_brick_usage ()
-{
-        cli_out ("Usage: volume remove-brick <VOLNAME> "
-                 "<BRICK> ...");
-}
-
 int
 cli_cmd_volume_remove_brick_cbk (struct cli_state *state,
                                  struct cli_cmd_word *word, const char **words,
@@ -663,7 +587,7 @@ cli_cmd_volume_remove_brick_cbk (struct cli_state *state,
         ret = cli_cmd_volume_remove_brick_parse (words, wordcount, &options);
 
         if (ret) {
-                cli_cmd_volume_remove_brick_usage ();
+                cli_usage_out (word->pattern);
                 goto out;
         }
 
@@ -693,14 +617,6 @@ out:
 
 }
 
-void
-cli_cmd_volume_replace_brick_usage ()
-{
-        cli_out("Usage: volume replace-brick <VOLNAME> "
-                "<BRICK> <NEW-BRICK> start|pause|abort|commit|status");
-}
-
-
 int
 cli_cmd_volume_replace_brick_cbk (struct cli_state *state,
                                   struct cli_cmd_word *word,
@@ -721,7 +637,7 @@ cli_cmd_volume_replace_brick_cbk (struct cli_state *state,
         ret = cli_cmd_volume_replace_brick_parse (words, wordcount, &options);
 
         if (ret) {
-                cli_cmd_volume_replace_brick_usage ();
+                cli_usage_out (word->pattern);
                 goto out;
         }
 
@@ -750,12 +666,6 @@ cli_cmd_volume_set_transport_cbk (struct cli_state *state,
         return 0;
 }
 
-void
-cli_cmd_log_filename_usage ()
-{
-        cli_out ("Usage: volume log filename <VOLNAME> [BRICK] <PATH>");
-}
-
 int
 cli_cmd_log_filename_cbk (struct cli_state *state, struct cli_cmd_word *word,
                           const char **words, int wordcount)
@@ -766,8 +676,8 @@ cli_cmd_log_filename_cbk (struct cli_state *state, struct cli_cmd_word *word,
         dict_t                  *options = NULL;
 
         if (!((wordcount == 5) || (wordcount == 6))) {
-               cli_cmd_log_filename_usage ();
-               goto out;
+                cli_usage_out (word->pattern);
+                goto out;
         }
 
         proc = &cli_rpc_prog->proctable[GF1_CLI_LOG_FILENAME];
@@ -795,12 +705,6 @@ out:
 }
 
 
-void
-cli_cmd_log_locate_usage ()
-{
-        cli_out ("Usage: volume log locate <VOLNAME> [BRICK]");
-}
-
 int
 cli_cmd_log_locate_cbk (struct cli_state *state, struct cli_cmd_word *word,
                         const char **words, int wordcount)
@@ -811,8 +715,8 @@ cli_cmd_log_locate_cbk (struct cli_state *state, struct cli_cmd_word *word,
         dict_t                  *options = NULL;
 
         if (!((wordcount == 4) || (wordcount == 5))) {
-               cli_cmd_log_locate_usage ();
-               goto out;
+                cli_usage_out (word->pattern);
+                goto out;
         }
 
         proc = &cli_rpc_prog->proctable[GF1_CLI_LOG_LOCATE];
@@ -840,12 +744,6 @@ out:
         return ret;
 }
 
-void
-cli_cmd_log_rotate_usage ()
-{
-        cli_out ("Usage: volume log rotate <VOLNAME> [BRICK]");
-}
-
 int
 cli_cmd_log_rotate_cbk (struct cli_state *state, struct cli_cmd_word *word,
                         const char **words, int wordcount)
@@ -856,8 +754,8 @@ cli_cmd_log_rotate_cbk (struct cli_state *state, struct cli_cmd_word *word,
         dict_t                  *options = NULL;
 
         if (!((wordcount == 4) || (wordcount == 5))) {
-               cli_cmd_log_rotate_usage ();
-               goto out;
+                cli_usage_out (word->pattern);
+                goto out;
         }
 
         proc = &cli_rpc_prog->proctable[GF1_CLI_LOG_ROTATE];
@@ -918,19 +816,11 @@ struct cli_cmd volume_cmds[] = {
           cli_cmd_volume_remove_brick_cbk,
           "remove brick from volume <VOLNAME>"},
 
-        { "volume rebalance <VOLNAME> start",
-          cli_cmd_volume_defrag_cbk,
-          "start rebalance of volume <VOLNAME>"},
-
-        { "volume rebalance <VOLNAME> stop",
-          cli_cmd_volume_defrag_cbk,
-          "stop rebalance of volume <VOLNAME>"},
-
-        { "volume rebalance <VOLNAME> status",
+        { "volume rebalance <VOLNAME> {start|stop|status}",
           cli_cmd_volume_defrag_cbk,
-          "rebalance status of volume <VOLNAME>"},
+          "rebalance operations"},
 
-        { "volume replace-brick <VOLNAME> (<BRICK> <NEW-BRICK>) start|pause|abort|status",
+        { "volume replace-brick <VOLNAME> <BRICK> <NEW-BRICK> {start|pause|abort|status}",
           cli_cmd_volume_replace_brick_cbk,
           "replace-brick operations"},
 
diff --git a/cli/src/cli.c b/cli/src/cli.c
index bb89566e693..a2e4d71bcba 100644
--- a/cli/src/cli.c
+++ b/cli/src/cli.c
@@ -451,6 +451,18 @@ cli_state_init (struct cli_state *state)
         return ret;
 }
 
+int
+cli_usage_out (const char *usage)
+{
+        GF_ASSERT (usage);
+        GF_ASSERT (usage[0] != '\0');
+
+        if (!usage || usage[0] == '\0')
+                return -1;
+
+        cli_out ("Usage: %s", usage);
+        return 0;
+}
 
 int
 cli_out (const char *fmt, ...)
diff --git a/cli/src/cli.h b/cli/src/cli.h
index 57be8c6f610..c0fb5a7e5a4 100644
--- a/cli/src/cli.h
+++ b/cli/src/cli.h
@@ -60,7 +60,7 @@ struct cli_cmd_word {
         cli_cmd_match_t       *match;
         cli_cmd_cbk_t         *cbkfn;
         const char            *desc;
-
+        const char            *pattern;
         int                    nextwords_cnt;
         struct cli_cmd_word  **nextwords;
 };
@@ -158,6 +158,7 @@ int cli_cmd_process_line (struct cli_state *state, const char *line);
 int cli_rl_enable (struct cli_state *state);
 int cli_rl_out (struct cli_state *state, const char *fmt, va_list ap);
 
+int cli_usage_out (const char *usage);
 int cli_out (const char *fmt, ...);
 
 int
diff --git a/cli/src/registry.c b/cli/src/registry.c
index c3634d974de..166a148976f 100644
--- a/cli/src/registry.c
+++ b/cli/src/registry.c
@@ -319,7 +319,7 @@ cli_cmd_newword (struct cli_cmd_word *word, const char *token)
 
 int
 cli_cmd_ingest (struct cli_cmd_tree *tree, char **tokens, cli_cmd_cbk_t *cbkfn,
-                const char *desc)
+                const char *desc, const char *pattern)
 {
         int                    ret = 0;
         char                 **tokenp = NULL;
@@ -351,6 +351,7 @@ cli_cmd_ingest (struct cli_cmd_tree *tree, char **tokens, cli_cmd_cbk_t *cbkfn,
 
         word->cbkfn = cbkfn;
         word->desc  = desc;
+        word->pattern = pattern;
 
         /* end of static strings in command template */
 
@@ -374,7 +375,7 @@ cli_cmd_register (struct cli_cmd_tree *tree, const char *template,
         if (!tokens)
                 return -1;
 
-        ret = cli_cmd_ingest (tree, tokens, cbk, desc);
+        ret = cli_cmd_ingest (tree, tokens, cbk, desc, template);
         if (ret)
                 goto err;