Page Menu
Home
ClusterLabs Projects
Search
Configure Global Search
Log In
Files
F4623340
notify.c
No One
Temporary
Actions
Download File
Edit File
Delete File
View Transforms
Subscribe
Mute Notifications
Flag For Later
Award Token
Size
10 KB
Referenced Files
None
Subscribers
None
notify.c
View Options
/*
* Copyright (C) 2004 Andrew Beekhof <andrew@beekhof.net>
*
* 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; either
* version 2 of the License, or (at your option) any later version.
*
* This software 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 library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <crm_internal.h>
#include <sys/param.h>
#include <stdio.h>
#include <sys/types.h>
#include <unistd.h>
#include <stdlib.h>
#include <errno.h>
#include <fcntl.h>
#include <time.h>
#include <crm/crm.h>
#include <crm/cib/internal.h>
#include <crm/msg_xml.h>
#include <crm/common/xml.h>
#include <cibio.h>
#include <callbacks.h>
#include <notify.h>
int pending_updates = 0;
struct cib_notification_s {
xmlNode *msg;
struct iovec *iov;
int32_t iov_size;
};
void attach_cib_generation(xmlNode * msg, const char *field, xmlNode * a_cib);
void do_cib_notify(int options, const char *op, xmlNode * update,
int result, xmlNode * result_data, const char *msg_type);
static void
need_pre_notify(gpointer key, gpointer value, gpointer user_data)
{
crm_client_t *client = value;
if (is_set(client->options, cib_notify_pre)) {
gboolean *needed = user_data;
*needed = TRUE;
}
}
static void
need_post_notify(gpointer key, gpointer value, gpointer user_data)
{
crm_client_t *client = value;
if (is_set(client->options, cib_notify_post)) {
gboolean *needed = user_data;
*needed = TRUE;
}
}
static gboolean
cib_notify_send_one(gpointer key, gpointer value, gpointer user_data)
{
const char *type = NULL;
gboolean do_send = FALSE;
crm_client_t *client = value;
struct cib_notification_s *update = user_data;
CRM_CHECK(client != NULL, return TRUE);
CRM_CHECK(update != NULL, return TRUE);
if (client->ipcs == NULL && client->remote == NULL) {
crm_warn("Skipping client with NULL channel");
return FALSE;
}
type = crm_element_value(update->msg, F_SUBTYPE);
CRM_LOG_ASSERT(type != NULL);
if (is_set(client->options, cib_notify_diff) && safe_str_eq(type, T_CIB_DIFF_NOTIFY)) {
do_send = TRUE;
} else if (is_set(client->options, cib_notify_replace)
&& safe_str_eq(type, T_CIB_REPLACE_NOTIFY)) {
do_send = TRUE;
} else if (is_set(client->options, cib_notify_confirm)
&& safe_str_eq(type, T_CIB_UPDATE_CONFIRM)) {
do_send = TRUE;
} else if (is_set(client->options, cib_notify_pre) && safe_str_eq(type, T_CIB_PRE_NOTIFY)) {
do_send = TRUE;
} else if (is_set(client->options, cib_notify_post) && safe_str_eq(type, T_CIB_POST_NOTIFY)) {
do_send = TRUE;
}
if (do_send) {
switch (client->kind) {
case CRM_CLIENT_IPC:
if (crm_ipcs_sendv(client, update->iov, crm_ipc_server_event) < 0) {
crm_warn("Notification of client %s/%s failed", client->name, client->id);
}
break;
#ifdef HAVE_GNUTLS_GNUTLS_H
case CRM_CLIENT_TLS:
#endif
case CRM_CLIENT_TCP:
crm_debug("Sent %s notification to client %s/%s", type, client->name, client->id);
crm_remote_send(client->remote, update->msg);
break;
default:
crm_err("Unknown transport %d for %s", client->kind, client->name);
}
}
return FALSE;
}
static void
cib_notify_send(xmlNode * xml)
{
struct iovec *iov;
struct cib_notification_s update;
ssize_t rc = crm_ipc_prepare(0, xml, &iov, 0);
crm_trace("Notifying clients");
if (rc > 0) {
update.msg = xml;
update.iov = iov;
update.iov_size = rc;
g_hash_table_foreach_remove(client_connections, cib_notify_send_one, &update);
} else {
crm_notice("Notification failed: %s (%d)", pcmk_strerror(rc), rc);
}
if (iov) {
free(iov[0].iov_base);
free(iov[1].iov_base);
free(iov);
}
crm_trace("Notify complete");
}
void
cib_pre_notify(int options, const char *op, xmlNode * existing, xmlNode * update)
{
xmlNode *update_msg = NULL;
const char *type = NULL;
const char *id = NULL;
gboolean needed = FALSE;
g_hash_table_foreach(client_connections, need_pre_notify, &needed);
if (needed == FALSE) {
return;
}
/* TODO: consider pre-notification for removal */
update_msg = create_xml_node(NULL, "pre-notify");
if (update != NULL) {
id = crm_element_value(update, XML_ATTR_ID);
}
crm_xml_add(update_msg, F_TYPE, T_CIB_NOTIFY);
crm_xml_add(update_msg, F_SUBTYPE, T_CIB_PRE_NOTIFY);
crm_xml_add(update_msg, F_CIB_OPERATION, op);
if (id != NULL) {
crm_xml_add(update_msg, F_CIB_OBJID, id);
}
if (update != NULL) {
crm_xml_add(update_msg, F_CIB_OBJTYPE, crm_element_name(update));
} else if (existing != NULL) {
crm_xml_add(update_msg, F_CIB_OBJTYPE, crm_element_name(existing));
}
type = crm_element_value(update_msg, F_CIB_OBJTYPE);
attach_cib_generation(update_msg, "cib_generation", the_cib);
if (existing != NULL) {
add_message_xml(update_msg, F_CIB_EXISTING, existing);
}
if (update != NULL) {
add_message_xml(update_msg, F_CIB_UPDATE, update);
}
cib_notify_send(update_msg);
if (update == NULL) {
crm_trace("Performing operation %s (on section=%s)", op, type);
} else {
crm_trace("Performing %s on <%s%s%s>", op, type, id ? " id=" : "", id ? id : "");
}
free_xml(update_msg);
}
void
cib_post_notify(int options, const char *op, xmlNode * update, int result, xmlNode * new_obj)
{
gboolean needed = FALSE;
g_hash_table_foreach(client_connections, need_post_notify, &needed);
if (needed == FALSE) {
return;
}
do_cib_notify(options, op, update, result, new_obj, T_CIB_UPDATE_CONFIRM);
}
void
cib_diff_notify(int options, const char *client, const char *call_id, const char *op,
xmlNode * update, int result, xmlNode * diff)
{
int add_updates = 0;
int add_epoch = 0;
int add_admin_epoch = 0;
int del_updates = 0;
int del_epoch = 0;
int del_admin_epoch = 0;
int log_level = LOG_DEBUG_2;
if (diff == NULL) {
return;
}
if (result != pcmk_ok) {
log_level = LOG_WARNING;
}
cib_diff_version_details(diff, &add_admin_epoch, &add_epoch, &add_updates,
&del_admin_epoch, &del_epoch, &del_updates);
if (add_updates != del_updates) {
do_crm_log(log_level,
"Update (client: %s%s%s): %d.%d.%d -> %d.%d.%d (%s)",
client, call_id ? ", call:" : "", call_id ? call_id : "",
del_admin_epoch, del_epoch, del_updates,
add_admin_epoch, add_epoch, add_updates, pcmk_strerror(result));
} else if (diff != NULL) {
do_crm_log(log_level,
"Local-only Change (client:%s%s%s): %d.%d.%d (%s)",
client, call_id ? ", call: " : "", call_id ? call_id : "",
add_admin_epoch, add_epoch, add_updates, pcmk_strerror(result));
}
do_cib_notify(options, op, update, result, diff, T_CIB_DIFF_NOTIFY);
}
void
do_cib_notify(int options, const char *op, xmlNode * update,
int result, xmlNode * result_data, const char *msg_type)
{
xmlNode *update_msg = NULL;
const char *id = NULL;
update_msg = create_xml_node(NULL, "notify");
if (result_data != NULL) {
id = crm_element_value(result_data, XML_ATTR_ID);
}
crm_xml_add(update_msg, F_TYPE, T_CIB_NOTIFY);
crm_xml_add(update_msg, F_SUBTYPE, msg_type);
crm_xml_add(update_msg, F_CIB_OPERATION, op);
crm_xml_add_int(update_msg, F_CIB_RC, result);
if (id != NULL) {
crm_xml_add(update_msg, F_CIB_OBJID, id);
}
if (update != NULL) {
crm_trace("Setting type to update->name: %s", crm_element_name(update));
crm_xml_add(update_msg, F_CIB_OBJTYPE, crm_element_name(update));
} else if (result_data != NULL) {
crm_trace("Setting type to new_obj->name: %s", crm_element_name(result_data));
crm_xml_add(update_msg, F_CIB_OBJTYPE, crm_element_name(result_data));
} else {
crm_trace("Not Setting type");
}
attach_cib_generation(update_msg, "cib_generation", the_cib);
if (update != NULL) {
add_message_xml(update_msg, F_CIB_UPDATE, update);
}
if (result_data != NULL) {
add_message_xml(update_msg, F_CIB_UPDATE_RESULT, result_data);
}
cib_notify_send(update_msg);
free_xml(update_msg);
}
void
attach_cib_generation(xmlNode * msg, const char *field, xmlNode * a_cib)
{
xmlNode *generation = create_xml_node(NULL, XML_CIB_TAG_GENERATION_TUPPLE);
if (a_cib != NULL) {
copy_in_properties(generation, a_cib);
}
add_message_xml(msg, field, generation);
free_xml(generation);
}
void
cib_replace_notify(const char *origin, xmlNode * update, int result, xmlNode * diff)
{
xmlNode *replace_msg = NULL;
int add_updates = 0;
int add_epoch = 0;
int add_admin_epoch = 0;
int del_updates = 0;
int del_epoch = 0;
int del_admin_epoch = 0;
if (diff == NULL) {
return;
}
cib_diff_version_details(diff, &add_admin_epoch, &add_epoch, &add_updates,
&del_admin_epoch, &del_epoch, &del_updates);
if (del_updates < 0) {
crm_log_xml_debug(diff, "Bad replace diff");
}
if (add_updates != del_updates) {
crm_info("Replaced: %d.%d.%d -> %d.%d.%d from %s",
del_admin_epoch, del_epoch, del_updates,
add_admin_epoch, add_epoch, add_updates, crm_str(origin));
} else if (diff != NULL) {
crm_info("Local-only Replace: %d.%d.%d from %s",
add_admin_epoch, add_epoch, add_updates, crm_str(origin));
}
replace_msg = create_xml_node(NULL, "notify-replace");
crm_xml_add(replace_msg, F_TYPE, T_CIB_NOTIFY);
crm_xml_add(replace_msg, F_SUBTYPE, T_CIB_REPLACE_NOTIFY);
crm_xml_add(replace_msg, F_CIB_OPERATION, CIB_OP_REPLACE);
crm_xml_add_int(replace_msg, F_CIB_RC, result);
attach_cib_generation(replace_msg, "cib-replace-generation", update);
crm_log_xml_trace(replace_msg, "CIB Replaced");
cib_notify_send(replace_msg);
free_xml(replace_msg);
}
File Metadata
Details
Attached
Mime Type
text/x-c
Expires
Tue, Jul 8, 3:18 PM (8 h, 39 m)
Storage Engine
blob
Storage Format
Raw Data
Storage Handle
1992885
Default Alt Text
notify.c (10 KB)
Attached To
Mode
rP Pacemaker
Attached
Detach File
Event Timeline
Log In to Comment