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/*
Copyright (c) 2014 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 "globals.h"
#include "run.h"
#include "glusterd.h"
#include "glusterd-utils.h"
#include "glusterd-volgen.h"
#include "glusterd-svc-mgmt.h"
#include "glusterd-shd-svc.h"
char *shd_svc_name = "glustershd";
void
glusterd_shdsvc_build (glusterd_svc_t *svc)
{
svc->manager = glusterd_shdsvc_manager;
svc->start = glusterd_shdsvc_start;
svc->stop = glusterd_svc_stop;
}
int
glusterd_shdsvc_init (glusterd_svc_t *svc)
{
return glusterd_svc_init (svc, shd_svc_name);
}
static int
glusterd_shdsvc_create_volfile ()
{
char filepath[PATH_MAX] = {0,};
int ret = -1;
glusterd_conf_t *conf = THIS->private;
dict_t *mod_dict = NULL;
mod_dict = dict_new ();
if (!mod_dict)
goto out;
ret = dict_set_uint32 (mod_dict, "cluster.background-self-heal-count",
0);
if (ret)
goto out;
ret = dict_set_str (mod_dict, "cluster.data-self-heal", "on");
if (ret)
goto out;
ret = dict_set_str (mod_dict, "cluster.metadata-self-heal", "on");
if (ret)
goto out;
ret = dict_set_str (mod_dict, "cluster.entry-self-heal", "on");
if (ret)
goto out;
glusterd_svc_build_volfile_path (shd_svc_name, conf->workdir,
filepath, sizeof (filepath));
ret = glusterd_create_global_volfile (build_shd_graph, filepath,
mod_dict);
if (ret) {
gf_msg (THIS->name, GF_LOG_ERROR, 0,
GD_MSG_VOLFILE_CREATE_FAIL, "Failed to create volfile");
goto out;
}
out:
if (mod_dict)
dict_unref (mod_dict);
gf_msg_debug (THIS->name, 0, "Returning %d", ret);
return ret;
}
int
glusterd_shdsvc_manager (glusterd_svc_t *svc, void *data, int flags)
{
int ret = 0;
glusterd_volinfo_t *volinfo = NULL;
if (!svc->inited) {
ret = glusterd_shdsvc_init (svc);
if (ret) {
gf_msg (THIS->name, GF_LOG_ERROR, 0,
GD_MSG_FAILED_INIT_SHDSVC, "Failed to init shd "
"service");
goto out;
} else {
svc->inited = _gf_true;
gf_msg_debug (THIS->name, 0, "shd service initialized");
}
}
volinfo = data;
/* If all the volumes are stopped or all shd compatible volumes
* are stopped then stop the service if:
* - volinfo is NULL or
* - volinfo is present and volume is shd compatible
* Otherwise create volfile and restart service if:
* - volinfo is NULL or
* - volinfo is present and volume is shd compatible
*/
if (glusterd_are_all_volumes_stopped () ||
glusterd_all_shd_compatible_volumes_stopped ()) {
if (!(volinfo &&
!glusterd_is_shd_compatible_volume (volinfo))) {
ret = svc->stop (svc, SIGTERM);
}
} else {
if (!(volinfo &&
!glusterd_is_shd_compatible_volume (volinfo))) {
ret = glusterd_shdsvc_create_volfile ();
if (ret)
goto out;
ret = svc->stop (svc, SIGTERM);
if (ret)
goto out;
ret = svc->start (svc, flags);
if (ret)
goto out;
ret = glusterd_conn_connect (&(svc->conn));
if (ret)
goto out;
}
}
out:
gf_msg_debug (THIS->name, 0, "Returning %d", ret);
return ret;
}
int
glusterd_shdsvc_start (glusterd_svc_t *svc, int flags)
{
int ret = -1;
char glusterd_uuid_option[PATH_MAX] = {0};
dict_t *cmdline = NULL;
cmdline = dict_new ();
if (!cmdline)
goto out;
ret = snprintf (glusterd_uuid_option, sizeof (glusterd_uuid_option),
"*replicate*.node-uuid=%s", uuid_utoa (MY_UUID));
if (ret < 0)
goto out;
/* Pass cmdline arguments as key-value pair. The key is merely
* a carrier and is not used. Since dictionary follows LIFO the value
* should be put in reverse order*/
ret = dict_set_str (cmdline, "arg2", glusterd_uuid_option);
if (ret)
goto out;
ret = dict_set_str (cmdline, "arg1", "--xlator-option");
if (ret)
goto out;
ret = glusterd_svc_start (svc, flags, cmdline);
out:
if (cmdline)
dict_unref (cmdline);
gf_msg_debug (THIS->name, 0, "Returning %d", ret);
return ret;
}
int
glusterd_shdsvc_reconfigure ()
{
return glusterd_svc_reconfigure (glusterd_shdsvc_create_volfile);
}
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