/*
* Copyright 2004-2018 Andrew Beekhof <andrew@beekhof.net>
*
* This source code is licensed under the GNU General Public License version 2
* or later (GPLv2+) WITHOUT ANY WARRANTY.
*/
#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 <crm/common/remote_internal.h>
#include <pacemaker-based.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 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("Could not notify clients: %s " CRM_XS " rc=%lld",
pcmk_strerror(rc), (long long) rc);
}
pcmk_free_ipc_event(iov);
crm_trace("Notify complete");
}
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_TRACE;
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);
}