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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 "mariadb.h"
#include <mysqld.h>
#include "wsrep_priv.h"
#include "wsrep_utils.h"
#include "wsrep_status.h"
void wsrep_notify_status(enum wsrep::server_state::state status,
const wsrep::view* view)
{
Wsrep_status::report_state(status);
if (!view)
{
WSREP_DEBUG("wsrep_notify_status server not yet ready : wsrep_ready=%d status %d",
wsrep_ready, (int)status);
return;
}
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(PSI_NOT_INSTRUMENTED, 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);
cmd_off += snprintf (cmd_ptr + cmd_off, cmd_len - cmd_off, " --status %s",
to_c_string(status));
if (view != NULL)
{
std::ostringstream uuid;
uuid << view->state_id().id();
cmd_off += snprintf (cmd_ptr + cmd_off, cmd_len - cmd_off,
" --uuid %s", uuid.str().c_str());
cmd_off += snprintf (cmd_ptr + cmd_off, cmd_len - cmd_off,
" --primary %s", view->view_seqno().get() >= 0 ? "yes" : "no");
cmd_off += snprintf (cmd_ptr + cmd_off, cmd_len - cmd_off,
" --index %zd", view->own_index());
const std::vector<wsrep::view::member>& members(view->members());
if (members.size())
{
cmd_off += snprintf (cmd_ptr + cmd_off, cmd_len - cmd_off, " --members");
for (unsigned int i= 0; i < members.size(); i++)
{
std::ostringstream id;
id << members[i].id();
cmd_off += snprintf(cmd_ptr + cmd_off, cmd_len - cmd_off,
"%c%s/%s/%s", i > 0 ? ',' : ' ',
id.str().c_str(),
members[i].name().c_str(),
members[i].incoming().c_str());
}
}
}
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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