mgmt/glusterd, cli: Introduce gluster volume status <volname>

Change-Id: Iea835b9e448e736016da2e44e3c9bfff93f2fa78
BUG: 3439
Reviewed-on: http://review.gluster.com/259
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Anand Avati <avati@gluster.com>

5 files changed, 256 insertions, 1 deletions

diff --git a/cli/src/cli-cmd-parser.c b/cli/src/cli-cmd-parser.c
index a442b3aee..9f35cc47e 100644
--- a/cli/src/cli-cmd-parser.c
+++ b/cli/src/cli-cmd-parser.c
@@ -1646,3 +1646,37 @@ out:
                 dict_destroy (dict);
         return ret;
 }
+
+int32_t
+cli_cmd_volume_status_parse (const char **words, int wordcount,
+                                dict_t **options)
+{
+        dict_t *dict            = NULL;
+        int     ret             = -1;
+
+        GF_ASSERT (words);
+        GF_ASSERT (options);
+
+
+        GF_ASSERT ((strncmp(words[0], "volume", 6) == 0));
+        GF_ASSERT ((strncmp(words[1], "status", 5) == 0));
+
+
+        dict = dict_new ();
+        if (!dict)
+                goto out;
+
+        GF_ASSERT(words[2]);
+
+        ret = dict_set_str (dict, "volname", (char *)words[2]);
+        if (ret)
+                goto out;
+
+        *options = dict;
+
+ out:
+        if (ret && dict)
+                dict_destroy (dict);
+
+        return ret;
+}
diff --git a/cli/src/cli-cmd-volume.c b/cli/src/cli-cmd-volume.c
index ab7f1ddc7..b61eb31c0 100644
--- a/cli/src/cli-cmd-volume.c
+++ b/cli/src/cli-cmd-volume.c
@@ -1211,6 +1211,74 @@ cli_cmd_log_level_cbk (struct cli_state *state, struct cli_cmd_word *word,
         return ret;
 }
 
+int
+cli_cmd_volume_status_cbk (struct cli_state *state,
+                              struct cli_cmd_word *word,
+                              const char **words, int wordcount)
+{
+        int                   ret         = -1;
+        rpc_clnt_procedure_t *proc        = NULL;
+        call_frame_t         *frame       = NULL;
+        dict_t               *dict        = NULL;
+        int                   parse_error = 0;
+
+        if (wordcount != 3) {
+                cli_usage_out (word->pattern);
+                parse_error = 1;
+                goto out;
+        }
+
+        proc = &cli_rpc_prog->proctable[GLUSTER_CLI_STATUS_VOLUME];
+
+        frame = create_frame (THIS, THIS->ctx->pool);
+        if (!frame)
+                goto out;
+
+        ret = cli_cmd_volume_status_parse (words, wordcount, &dict);
+        if (ret)
+                goto out;
+
+        if (proc->fn)
+                ret = proc->fn (frame, THIS, dict);
+
+ out:
+        return ret;
+}
+
+
+int
+cli_print_brick_status (char *brick, int port, int online, int pid)
+{
+        int  fieldlen = CLI_VOL_STATUS_BRICK_LEN;
+        char buf[80] = {0,};
+        int  bricklen = 0;
+        int  i = 0;
+        char *p = NULL;
+        int  num_tabs = 0;
+
+        bricklen = strlen (brick);
+        p = brick;
+        while (bricklen > 0) {
+                if (bricklen > fieldlen) {
+                        i++;
+                        strncpy (buf, p, fieldlen);
+                        buf[strlen(buf) + 1] = '\0';
+                        cli_out ("%s", buf);
+                        p = brick + i * fieldlen;
+                        bricklen -= fieldlen;
+                } else {
+                        num_tabs = (fieldlen - bricklen) / CLI_TAB_LENGTH + 1;
+                        printf ("%s", p);
+                        while (num_tabs-- != 0)
+                                printf ("\t");
+                        cli_out ("%d\t%c\t%d", port, online?'Y':'N', pid);
+                        bricklen = 0;
+                }
+        }
+
+        return 0;
+}
+
 struct cli_cmd volume_cmds[] = {
         { "volume info [all|<VOLNAME>]",
           cli_cmd_volume_info_cbk,
@@ -1309,6 +1377,10 @@ struct cli_cmd volume_cmds[] = {
          cli_cmd_log_level_cbk,
          "log level for translator"},
 
+        { "volume status <VOLNAME>",
+          cli_cmd_volume_status_cbk,
+         "display status of specified volume"},
+
         { NULL, NULL, NULL }
 };
 
diff --git a/cli/src/cli-rpc-ops.c b/cli/src/cli-rpc-ops.c
index b6fbf3f05..498cdbf74 100644
--- a/cli/src/cli-rpc-ops.c
+++ b/cli/src/cli-rpc-ops.c
@@ -3562,6 +3562,130 @@ out:
         return ret;
 }
 
+static int
+gf_cli3_1_status_cbk (struct rpc_req *req, struct iovec *iov,
+                         int count, void *myframe)
+{
+        gf1_cli_status_volume_rsp       rsp = {0,};
+        int                             ret = -1;
+        dict_t                          *dict = NULL;
+        char                            *hostname = NULL;
+        char                            *path = NULL;
+        int                             i = 0;
+        int                             port = 0;
+        int                             online = 0;
+        char                            key[1024] = {0,};
+        int                             pid = 0;
+        char                            brick[8192] = {0,};
+        char                            *volname = NULL;
+
+
+        if (req->rpc_status == -1)
+                goto out;
+
+        ret = gf_xdr_to_cli_status_volume_rsp (*iov, &rsp);
+        if (ret < 0) {
+                gf_log ("cli", GF_LOG_ERROR, "Volume status response error");
+                goto out;
+        }
+
+        gf_log ("cli", GF_LOG_DEBUG, "Received response to status cmd");
+
+        if (rsp.op_ret && strcmp (rsp.op_errstr, ""))
+                cli_out ("%s", rsp.op_errstr);
+        else if (rsp.op_ret)
+                cli_out ("Unable to obtain volume status information.");
+
+        dict = dict_new ();
+        if (!dict)
+                goto out;
+
+        ret = dict_unserialize (rsp.dict.dict_val,
+                                rsp.dict.dict_len,
+                                &dict);
+        if (ret)
+                goto out;
+
+
+        ret = dict_get_int32 (dict, "count", &count);
+        if (ret)
+                goto out;
+
+        ret = dict_get_str (dict, "volname", &volname);
+
+        cli_out ("Brick status for volume: %s", volname);
+        cli_out ("Brick\t\t\t\t\t\t\tPort\tOnline\tPID");
+        for (i = 0; i < count; i++) {
+                memset (key, 0, sizeof (key));
+                snprintf (key, sizeof (key), "brick%d.hostname", i);
+                ret = dict_get_str (dict, key, &hostname);
+                if (ret)
+                        goto out;
+
+                memset (key, 0, sizeof (key));
+                snprintf (key, sizeof (key), "brick%d.path", i);
+                ret = dict_get_str (dict, key, &path);
+                if (ret)
+                        goto out;
+
+                memset (key, 0, sizeof (key));
+                snprintf (key, sizeof (key), "brick%d.port", i);
+                ret = dict_get_int32 (dict, key, &port);
+                if (ret)
+                        goto out;
+
+                memset (key, 0, sizeof (key));
+                snprintf (key, sizeof (key), "brick%d.status", i);
+                ret = dict_get_int32 (dict, key, &online);
+                if (ret)
+                        goto out;
+
+                memset (key, 0, sizeof (key));
+                snprintf (key, sizeof (key), "brick%d.pid", i);
+                ret = dict_get_int32 (dict, key, &pid);
+
+                snprintf (brick, sizeof (brick) -1, "%s:%s", hostname, path);
+
+                cli_print_line (CLI_BRICK_STATUS_LINE_LEN);
+                cli_print_brick_status (brick, port, online, pid);
+        }
+
+        ret = rsp.op_ret;
+
+ out:
+        cli_cmd_broadcast_response (ret);
+        return ret;
+}
+
+int32_t
+gf_cli3_1_status_volume (call_frame_t *frame, xlator_t *this,
+                            void *data)
+{
+        gf1_cli_status_volume_req       req  = {0,};
+        int                             ret  = 0;
+        dict_t                          *dict = NULL;
+
+        if (!frame || !this || !data) {
+                ret = -1;
+                goto out;
+        }
+
+        dict = data;
+
+        ret = dict_get_str (dict, "volname", &req.volname);
+        if (ret)
+                goto out;
+
+        ret = cli_cmd_submit (&req, frame, cli_rpc_prog,
+                              GLUSTER_CLI_STATUS_VOLUME, NULL,
+                              gf_xdr_from_cli_status_volume_req,
+                              this, gf_cli3_1_status_cbk,
+                              (xdrproc_t)xdr_gf1_cli_status_volume_req);
+
+ out:
+        gf_log ("cli", GF_LOG_DEBUG, "Returning: %d", ret);
+        return ret;
+}
 
 struct rpc_clnt_procedure gluster_cli_actors[GLUSTER_CLI_MAXVALUE] = {
         [GLUSTER_CLI_NULL]             = {"NULL", NULL },
@@ -3593,7 +3717,8 @@ struct rpc_clnt_procedure gluster_cli_actors[GLUSTER_CLI_MAXVALUE] = {
         [GLUSTER_CLI_QUOTA]            = {"QUOTA", gf_cli3_1_quota},
         [GLUSTER_CLI_TOP_VOLUME]       = {"TOP_VOLUME", gf_cli3_1_top_volume},
         [GLUSTER_CLI_LOG_LEVEL]        = {"VOLUME_LOGLEVEL", gf_cli3_1_log_level},
-        [GLUSTER_CLI_GETWD]            = {"GETWD", gf_cli3_1_getwd}
+        [GLUSTER_CLI_GETWD]            = {"GETWD", gf_cli3_1_getwd},
+        [GLUSTER_CLI_STATUS_VOLUME]    = {"STATUS_VOLUME", gf_cli3_1_status_volume},
 };
 
 struct rpc_clnt_program cli_prog = {
diff --git a/cli/src/cli.c b/cli/src/cli.c
index 1703c0ca6..eec14d6fa 100644
--- a/cli/src/cli.c
+++ b/cli/src/cli.c
@@ -698,3 +698,14 @@ out:
 
         return ret;
 }
+
+void
+cli_print_line (int len)
+{
+        GF_ASSERT (len > 0);
+
+        while (len--)
+                printf ("-");
+
+        printf ("\n");
+}
diff --git a/cli/src/cli.h b/cli/src/cli.h
index 91fca102e..55d0d89f1 100644
--- a/cli/src/cli.h
+++ b/cli/src/cli.h
@@ -34,6 +34,9 @@
 #define CLI_DEFAULT_CONN_TIMEOUT             120
 #define CLI_DEFAULT_CMD_TIMEOUT              120
 #define DEFAULT_CLI_LOG_FILE_DIRECTORY     DATADIR "/log/glusterfs"
+#define CLI_VOL_STATUS_BRICK_LEN              55
+#define CLI_TAB_LENGTH                         8
+#define CLI_BRICK_STATUS_LINE_LEN             75
 
 enum argp_option_keys {
 	ARGP_DEBUG_KEY = 133,
@@ -248,4 +251,14 @@ cli_cmd_volume_top_parse (const char **words, int wordcount,
 int32_t
 cli_cmd_log_level_parse (const char **words, int wordcount,
                          dict_t **options);
+
+int32_t
+cli_cmd_volume_status_parse (const char **words, int wordcount,
+                             dict_t **options);
+
+int
+cli_print_brick_status (char *brick, int port, int online, int pid);
+
+void
+cli_print_line (int len);
 #endif /* __CLI_H__ */