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/* Copyright 2010 Codership Oy <http://www.codership.com>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; version 2 of the License.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335 USA */
#include <mysqld.h>
#include "wsrep_priv.h"
#include "wsrep_utils.h"
static const char* _status_str(wsrep_member_status_t status)
{
switch (status)
{
case WSREP_MEMBER_UNDEFINED: return "Undefined";
case WSREP_MEMBER_JOINER: return "Joiner";
case WSREP_MEMBER_DONOR: return "Donor";
case WSREP_MEMBER_JOINED: return "Joined";
case WSREP_MEMBER_SYNCED: return "Synced";
default: return "Error(?)";
}
}
void wsrep_notify_status (wsrep_member_status_t status,
const wsrep_view_info_t* view)
{
if (!wsrep_notify_cmd || 0 == strlen(wsrep_notify_cmd))
{
WSREP_INFO("wsrep_notify_cmd is not defined, skipping notification.");
return;
}
const long cmd_len = (1 << 16) - 1;
char* cmd_ptr = (char*) my_malloc(cmd_len + 1, MYF(MY_WME));
long cmd_off = 0;
if (!cmd_ptr)
return; // the warning is in the log
cmd_off += snprintf (cmd_ptr + cmd_off, cmd_len - cmd_off, "%s",
wsrep_notify_cmd);
if (status >= WSREP_MEMBER_UNDEFINED && status < WSREP_MEMBER_ERROR)
{
cmd_off += snprintf (cmd_ptr + cmd_off, cmd_len - cmd_off, " --status %s",
_status_str(status));
}
else
{
/* here we preserve provider error codes */
cmd_off += snprintf (cmd_ptr + cmd_off, cmd_len - cmd_off,
" --status 'Error(%d)'", status);
}
if (0 != view)
{
char uuid_str[40];
wsrep_uuid_print (&view->state_id.uuid, uuid_str, sizeof(uuid_str));
cmd_off += snprintf (cmd_ptr + cmd_off, cmd_len - cmd_off,
" --uuid %s", uuid_str);
cmd_off += snprintf (cmd_ptr + cmd_off, cmd_len - cmd_off,
" --primary %s", view->view >= 0 ? "yes" : "no");
cmd_off += snprintf (cmd_ptr + cmd_off, cmd_len - cmd_off,
" --index %d", view->my_idx);
if (view->memb_num)
{
cmd_off += snprintf (cmd_ptr + cmd_off, cmd_len - cmd_off, " --members");
for (int i = 0; i < view->memb_num; i++)
{
wsrep_uuid_print (&view->members[i].id, uuid_str, sizeof(uuid_str));
cmd_off += snprintf (cmd_ptr + cmd_off, cmd_len - cmd_off,
"%c%s/%s/%s", i > 0 ? ',' : ' ',
uuid_str, view->members[i].name,
view->members[i].incoming);
}
}
}
if (cmd_off == cmd_len)
{
WSREP_ERROR("Notification buffer too short (%ld). Aborting notification.",
cmd_len);
my_free(cmd_ptr);
return;
}
wsp::process p(cmd_ptr, "r", NULL);
p.wait();
int err = p.error();
if (err)
{
WSREP_ERROR("Notification command failed: %d (%s): \"%s\"",
err, strerror(err), cmd_ptr);
}
my_free(cmd_ptr);
}
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