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cfc7da3573
defaults in services.c) and can load another module to do the quorum work (eg YKD which I've made more compliant too). All the quorum code has been removed from sync.c. quorum.c is simply a shim later for the coroapi, the main module is in vsf_quorum.c There are coroapi calls to query quorate status and also to get notifications when it changes. I've included the testquorum.lcrso module in this patch because I think it's really helpful for testing. It sets the quorum state based on an objdb variable, this can be set or cleared using corosync-cfgtool git-svn-id: http://svn.fedorahosted.org/svn/corosync/trunk@1704 fd59a12c-fef9-0310-b244-a6a79926bd2f
424 lines
9.8 KiB
C
424 lines
9.8 KiB
C
/*
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* Copyright (c) 2006 MontaVista Software, Inc.
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* Copyright (c) 2006-2008 Red Hat, Inc.
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*
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* All rights reserved.
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*
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* Author: Steven Dake (sdake@redhat.com)
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*
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* This software licensed under BSD license, the text of which follows:
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* - Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* - Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* - Neither the name of the MontaVista Software, Inc. nor the names of its
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* contributors may be used to endorse or promote products derived from this
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* software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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* THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <stdlib.h>
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#include <string.h>
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#include <assert.h>
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#include <corosync/lcr/lcr_ifact.h>
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#include <corosync/swab.h>
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#include <corosync/totem/totem.h>
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#include "mainconfig.h"
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#include "util.h"
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#include <corosync/engine/logsys.h>
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#include "timer.h"
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#include <corosync/totem/totempg.h>
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#include <corosync/totem/totemip.h>
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#include "main.h"
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#include "ipc.h"
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#include <corosync/engine/coroapi.h>
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#include "service.h"
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LOGSYS_DECLARE_SUBSYS ("SERV", LOG_INFO);
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struct default_service {
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char *name;
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int ver;
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};
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static struct default_service default_services[] = {
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{
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.name = "corosync_evs",
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.ver = 0,
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},
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{
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.name = "corosync_cfg",
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.ver = 0,
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},
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{
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.name = "corosync_cpg",
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.ver = 0,
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},
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{
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.name = "corosync_confdb",
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.ver = 0,
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},
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{
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.name = "corosync_pload",
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.ver = 0,
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},
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{
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.name = "corosync_quorum",
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.ver = 0,
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},
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};
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struct corosync_service_engine *ais_service[SERVICE_HANDLER_MAXIMUM_COUNT];
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static unsigned int object_internal_configuration_handle;
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static unsigned int default_services_requested (struct corosync_api_v1 *corosync_api)
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{
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unsigned int object_service_handle;
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unsigned int object_find_handle;
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char *value;
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/*
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* Don't link default services if they have been disabled
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*/
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corosync_api->object_find_create (
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OBJECT_PARENT_HANDLE,
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"aisexec",
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strlen ("aisexec"),
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&object_find_handle);
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if (corosync_api->object_find_next (
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object_find_handle,
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&object_service_handle) == 0) {
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if ( ! corosync_api->object_key_get (object_service_handle,
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"defaultservices",
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strlen ("defaultservices"),
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(void *)&value,
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NULL)) {
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if (value && strcmp (value, "no") == 0) {
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return 0;
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}
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}
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}
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corosync_api->object_find_destroy (object_find_handle);
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return (-1);
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}
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unsigned int corosync_service_link_and_init (
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struct corosync_api_v1 *corosync_api,
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char *service_name,
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unsigned int service_ver)
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{
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struct corosync_service_engine_iface_ver0 *iface_ver0;
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void *iface_ver0_p;
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unsigned int handle;
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struct corosync_service_engine *service;
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unsigned int res;
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unsigned int object_service_handle;
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/*
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* reference the service interface
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*/
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iface_ver0_p = NULL;
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lcr_ifact_reference (
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&handle,
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service_name,
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service_ver,
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&iface_ver0_p,
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(void *)0);
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iface_ver0 = (struct corosync_service_engine_iface_ver0 *)iface_ver0_p;
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if (iface_ver0 == 0) {
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log_printf(LOG_LEVEL_ERROR, "Service failed to load '%s'.\n", service_name);
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return (-1);
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}
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/*
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* Initialize service
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*/
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service = iface_ver0->corosync_get_service_engine_ver0();
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ais_service[service->id] = service;
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if (service->config_init_fn) {
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res = service->config_init_fn (corosync_api);
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}
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if (service->exec_init_fn) {
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res = service->exec_init_fn (corosync_api);
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}
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/*
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* Store service in object database
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*/
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corosync_api->object_create (object_internal_configuration_handle,
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&object_service_handle,
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"service",
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strlen ("service"));
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corosync_api->object_key_create (object_service_handle,
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"name",
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strlen ("name"),
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service_name,
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strlen (service_name) + 1);
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corosync_api->object_key_create (object_service_handle,
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"ver",
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strlen ("ver"),
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&service_ver,
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sizeof (service_ver));
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res = corosync_api->object_key_create (object_service_handle,
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"handle",
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strlen ("handle"),
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&handle,
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sizeof (handle));
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corosync_api->object_key_create (object_service_handle,
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"service_id",
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strlen ("service_id"),
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&service->id,
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sizeof (service->id));
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log_printf (LOG_LEVEL_NOTICE, "Service initialized '%s'\n", service->name);
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return (res);
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}
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static int corosync_service_unlink_common (
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struct corosync_api_v1 *corosync_api,
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unsigned int object_service_handle,
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const char *service_name,
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unsigned int service_version)
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{
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unsigned int res;
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unsigned short *service_id;
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unsigned int *found_service_handle;
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res = corosync_api->object_key_get (object_service_handle,
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"handle",
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strlen ("handle"),
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(void *)&found_service_handle,
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NULL);
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res = corosync_api->object_key_get (object_service_handle,
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"service_id",
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strlen ("service_id"),
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(void *)&service_id,
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NULL);
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log_printf(LOG_LEVEL_NOTICE, "Unloading corosync component: %s v%u\n",
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service_name, service_version);
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if (ais_service[*service_id]->exec_exit_fn) {
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ais_service[*service_id]->exec_exit_fn ();
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}
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ais_service[*service_id] = NULL;
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return lcr_ifact_release (*found_service_handle);
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}
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extern unsigned int corosync_service_unlink_and_exit (
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struct corosync_api_v1 *corosync_api,
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char *service_name,
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unsigned int service_ver)
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{
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unsigned int res;
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unsigned int object_service_handle;
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char *found_service_name;
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unsigned int *found_service_ver;
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unsigned int object_find_handle;
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corosync_api->object_find_create (
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object_internal_configuration_handle,
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"service",
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strlen ("service"),
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&object_find_handle);
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while (corosync_api->object_find_next (
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object_find_handle,
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&object_service_handle) == 0) {
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corosync_api->object_key_get (object_service_handle,
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"name",
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strlen ("name"),
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(void *)&found_service_name,
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NULL);
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corosync_api->object_key_get (object_service_handle,
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"ver",
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strlen ("ver"),
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(void *)&found_service_ver,
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NULL);
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/*
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* If service found and linked exit it
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*/
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if ((strcmp (service_name, found_service_name) == 0) &&
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(service_ver == *found_service_ver)) {
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res = corosync_service_unlink_common (
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corosync_api, object_service_handle,
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service_name, service_ver);
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corosync_api->object_destroy (object_service_handle);
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return res;
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}
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}
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corosync_api->object_find_destroy (object_find_handle);
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return (-1);
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}
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extern unsigned int corosync_service_unlink_all (
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struct corosync_api_v1 *corosync_api)
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{
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char *service_name;
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unsigned int *service_ver;
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unsigned int object_service_handle;
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unsigned int object_find_handle;
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int found;
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log_printf(LOG_LEVEL_NOTICE, "Unloading all corosync components\n");
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/*
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* TODO
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* Deleting of keys not supported during iteration at this time
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* hence this ugly hack
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*/
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while(corosync_api->object_find_create (
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object_internal_configuration_handle,
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"service",
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strlen ("service"),
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&object_find_handle) == 0)
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{
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found = 0;
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while(corosync_api->object_find_next (
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object_find_handle,
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&object_service_handle) == 0)
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found = 1;
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if(!found)
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break;
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corosync_api->object_key_get (
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object_service_handle,
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"name",
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strlen ("name"),
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(void *)&service_name,
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NULL);
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corosync_api->object_key_get (
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object_service_handle,
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"ver",
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strlen ("ver"),
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(void *)&service_ver,
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NULL);
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corosync_service_unlink_common (
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corosync_api, object_service_handle,
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service_name, *service_ver);
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corosync_api->object_destroy (object_service_handle);
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corosync_api->object_find_destroy (object_find_handle);
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}
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return (0);
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}
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/*
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* Links default services into the executive
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*/
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unsigned int corosync_service_defaults_link_and_init (struct corosync_api_v1 *corosync_api)
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{
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unsigned int i;
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unsigned int object_service_handle;
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char *found_service_name;
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char *found_service_ver;
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unsigned int found_service_ver_atoi;
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unsigned int object_find_handle;
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corosync_api->object_create (OBJECT_PARENT_HANDLE,
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&object_internal_configuration_handle,
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"internal_configuration",
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strlen ("internal_configuration"));
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corosync_api->object_find_create (
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OBJECT_PARENT_HANDLE,
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"service",
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strlen ("service"),
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&object_find_handle);
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while (corosync_api->object_find_next (
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object_find_handle,
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&object_service_handle) == 0) {
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corosync_api->object_key_get (object_service_handle,
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"name",
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strlen ("name"),
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(void *)&found_service_name,
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NULL);
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corosync_api->object_key_get (object_service_handle,
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"ver",
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strlen ("ver"),
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(void *)&found_service_ver,
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NULL);
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found_service_ver_atoi = atoi (found_service_ver);
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corosync_service_link_and_init (
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corosync_api,
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found_service_name,
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found_service_ver_atoi);
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}
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corosync_api->object_find_destroy (object_find_handle);
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if (default_services_requested (corosync_api) == 0) {
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return (0);
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}
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for (i = 0;
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i < sizeof (default_services) / sizeof (struct default_service); i++) {
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corosync_service_link_and_init (
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corosync_api,
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default_services[i].name,
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default_services[i].ver);
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}
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return (0);
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}
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