From df4dd593f29aec8e2116aec1775ad4b8833d8c93 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Jan=20Lindstr=C3=B6m?= Date: Wed, 6 Aug 2014 15:39:15 +0300 Subject: MDEV-6247: Merge 10.0-galera to 10.1. Merged lp:maria/maria-10.0-galera up to revision 3879. Added a new functions to handler API to forcefully abort_transaction, producing fake_trx_id, get_checkpoint and set_checkpoint for XA. These were added for future possiblity to add more storage engines that could use galera replication. --- sql/wsrep_notify.cc | 111 ++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 111 insertions(+) create mode 100644 sql/wsrep_notify.cc (limited to 'sql/wsrep_notify.cc') diff --git a/sql/wsrep_notify.cc b/sql/wsrep_notify.cc new file mode 100644 index 00000000000..6eefb961b62 --- /dev/null +++ b/sql/wsrep_notify.cc @@ -0,0 +1,111 @@ +/* Copyright 2010 Codership Oy + + 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ + +#include +#include "wsrep_priv.h" +#include "wsrep_utils.h" + +const char* wsrep_notify_cmd=""; + +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; + } + + char cmd_buf[1 << 16]; // this can be long + long cmd_len = sizeof(cmd_buf) - 1; + char* cmd_ptr = cmd_buf; + long cmd_off = 0; + + 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); + return; + } + + wsp::process p(cmd_ptr, "r"); + + p.wait(); + int err = p.error(); + + if (err) + { + WSREP_ERROR("Notification command failed: %d (%s): \"%s\"", + err, strerror(err), cmd_ptr); + } +} + -- cgit v1.2.1