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