NFS-Ganesha: Handling CLI commands when NFS-Ganesha keys are set

When ganesha.enable is set to on and features.ganesha is
enabled, there are a few behaviour changes that should
be seen in other volume operations.

1. ganesha.enable can be set to 'on' only
when features.ganesha is set to 'enable'

2.When gluster vol is started, and if ganesha.enable
key was set to 'on', it should automatically export the volume
via NFS-Ganesha.

3.When ganesha.enable is set to 'on', and a volume
is stopped, that volume should be unexported via NFS-Ganesha.

4. gluster vol reset <volname>
If ganesha.enable was set to on, then unexport the
volume via NFS-Ganesha.

5. gluster vol reset all
If features.ganesha is set to enable, as part
of reset all, set it to disable. This translates
to teardown cluster.

All the above problems are fixed by checking the global key
and value, depending on the value, specific functions are called.
And also, functions related to global commands
are moved to cli-cmd-global.c

Commit phase of features.ganesha enable/disable
runs the ganesha-ha.sh setup/teardown respectively.
Before the script begins, it is important that the
NFS-Ganesha service starts on all the HA nodes.
Having the start service commands in the
commit phase could lead to problems.
Moving the pre-requisite service start
commands to the 'stage' phase.

Change-Id: I5a256f94f8e1310ddcd5369f329b7168b2a24c47
BUG: 1200265
Signed-off-by: Meghana Madhusudhan <mmadhusu@redhat.com>
Reviewed-on: http://review.gluster.org/10283
Reviewed-by: jiffin tony Thottan <jthottan@redhat.com>
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Kaleb KEITHLEY <kkeithle@redhat.com>

1 files changed, 131 insertions, 0 deletions

diff --git a/cli/src/cli-cmd-global.c b/cli/src/cli-cmd-global.c
new file mode 100644
index 00000000000..9b71821b00c
--- /dev/null
+++ b/cli/src/cli-cmd-global.c
@@ -0,0 +1,131 @@
+/*
+   Copyright (c) 2015 Red Hat, Inc. <http://www.redhat.com>
+   This file is part of GlusterFS.
+
+   This file is licensed to you under your choice of the GNU Lesser
+   General Public License, version 3 or any later version (LGPLv3 or
+   later), or the GNU General Public License, version 2 (GPLv2), in all
+   cases as published by the Free Software Foundation.
+*/
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <pthread.h>
+
+#include <sys/socket.h>
+#include <netdb.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <netinet/in.h>
+
+#ifndef _CONFIG_H
+#define _CONFIG_H
+#include "config.h"
+#endif
+
+#include "cli.h"
+#include "cli-cmd.h"
+#include "cli-mem-types.h"
+#include "cli1-xdr.h"
+#include "run.h"
+#include "syscall.h"
+#include "common-utils.h"
+
+extern rpc_clnt_prog_t *cli_rpc_prog;
+
+int
+cli_cmd_global_help_cbk (struct cli_state *state, struct cli_cmd_word *in_word,
+                         const char **words, int wordcount);
+int cli_cmd_ganesha_cbk (struct cli_state *state, struct cli_cmd_word *word,
+                                         const char **words, int wordcount);
+
+
+struct cli_cmd global_cmds[] = {
+        { "global help",
+           cli_cmd_global_help_cbk,
+           "list global commands",
+        },
+        { "nfs-ganesha {enable| disable} ",
+           cli_cmd_ganesha_cbk,
+          "Enable/disable NFS-Ganesha support",
+        },
+        {NULL,  NULL,  NULL}
+};
+
+int
+cli_cmd_global_help_cbk (struct cli_state *state, struct cli_cmd_word *in_word,
+                      const char **words, int wordcount)
+{
+        struct cli_cmd        *cmd = NULL;
+
+        for (cmd = global_cmds; cmd->pattern; cmd++)
+                if (_gf_false == cmd->disable)
+                        cli_out ("%s - %s", cmd->pattern, cmd->desc);
+
+        return 0;
+}
+
+int
+cli_cmd_global_register (struct cli_state *state)
+{
+        int ret = 0;
+        struct cli_cmd *cmd =  NULL;
+        for (cmd = global_cmds; cmd->pattern; cmd++) {
+                ret = cli_cmd_register (&state->tree, cmd);
+                        if (ret)
+                                goto out;
+        }
+out:
+        return ret;
+
+}
+
+int cli_cmd_ganesha_cbk (struct cli_state *state, struct cli_cmd_word *word,
+                         const char **words, int wordcount)
+
+{
+         int                     sent        =   0;
+         int                     parse_error =   0;
+         int                     ret         =  -1;
+         rpc_clnt_procedure_t    *proc       =  NULL;
+         call_frame_t            *frame      =  NULL;
+         dict_t                  *options    =  NULL;
+         cli_local_t             *local      =  NULL;
+         char                    *op_errstr  =  NULL;
+
+        proc = &cli_rpc_prog->proctable[GLUSTER_CLI_GANESHA];
+
+        frame = create_frame (THIS, THIS->ctx->pool);
+        if (!frame)
+                goto out;
+
+        ret = cli_cmd_ganesha_parse (state, words, wordcount,
+                                     &options, &op_errstr);
+        if (ret) {
+                if (op_errstr) {
+                    cli_err ("%s", op_errstr);
+                    GF_FREE (op_errstr);
+                } else
+                    cli_usage_out (word->pattern);
+                parse_error = 1;
+                goto out;
+        }
+
+        CLI_LOCAL_INIT (local, words, frame, options);
+
+        if (proc->fn) {
+                ret = proc->fn (frame, THIS, options);
+        }
+
+out:
+        if (ret) {
+                cli_cmd_sent_status_get (&sent);
+                if ((sent == 0) && (parse_error == 0))
+                        cli_out ("Setting global option failed");
+        }
+
+        CLI_STACK_DESTROY (frame);
+        return ret;
+}
+