/
legacy.c
1218 lines (1023 loc) · 36.5 KB
/
legacy.c
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/*
* 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 <sys/stat.h>
#include <unistd.h>
#include <stdlib.h>
#include <errno.h>
#include <fcntl.h>
#include <regex.h>
#include <crm/crm.h>
#include <crm/cib/internal.h>
#include <crm/msg_xml.h>
#include <crm/common/ipc.h>
#include <crm/common/ipcs.h>
#include <crm/cluster/internal.h>
#include <crm/common/xml.h>
#include <crm/attrd.h>
#include <attrd_common.h>
#define OPTARGS "hV"
#if SUPPORT_HEARTBEAT
ll_cluster_t *attrd_cluster_conn;
#endif
char *attrd_uname = NULL;
char *attrd_uuid = NULL;
GHashTable *attr_hash = NULL;
cib_t *cib_conn = NULL;
/* Convenience macro for registering a CIB callback.
* Check cib_conn != NULL before using.
*/
#define register_cib_callback(call_id, data, fn, free_fn) \
cib_conn->cmds->register_callback_full(cib_conn, call_id, 120, FALSE, \
data, #fn, fn, free_fn)
typedef struct attr_hash_entry_s {
char *uuid;
char *id;
char *set;
char *section;
char *value;
char *stored_value;
int timeout;
char *dampen;
guint timer_id;
char *user;
} attr_hash_entry_t;
void attrd_local_callback(xmlNode * msg);
gboolean attrd_timer_callback(void *user_data);
gboolean attrd_trigger_update(attr_hash_entry_t * hash_entry);
void attrd_perform_update(attr_hash_entry_t * hash_entry);
static void update_local_attr(xmlNode *msg, attr_hash_entry_t *hash_entry);
static void
free_hash_entry(gpointer data)
{
attr_hash_entry_t *entry = data;
if (entry == NULL) {
return;
}
free(entry->id);
free(entry->set);
free(entry->dampen);
free(entry->section);
free(entry->uuid);
free(entry->value);
free(entry->stored_value);
free(entry->user);
free(entry);
}
/* Exit code means? */
static int32_t
attrd_ipc_dispatch(qb_ipcs_connection_t * c, void *data, size_t size)
{
uint32_t id = 0;
uint32_t flags = 0;
crm_client_t *client = crm_client_get(c);
xmlNode *msg = crm_ipcs_recv(client, data, size, &id, &flags);
crm_ipcs_send_ack(client, id, flags, "ack", __FUNCTION__, __LINE__);
if (msg == NULL) {
crm_debug("No msg from %d (%p)", crm_ipcs_client_pid(c), c);
return 0;
}
#if ENABLE_ACL
CRM_ASSERT(client->user != NULL);
crm_acl_get_set_user(msg, F_ATTRD_USER, client->user);
#endif
crm_trace("Processing msg from %d (%p)", crm_ipcs_client_pid(c), c);
crm_log_xml_trace(msg, __FUNCTION__);
attrd_local_callback(msg);
free_xml(msg);
return 0;
}
static void
usage(const char *cmd, int exit_status)
{
FILE *stream;
stream = exit_status ? stderr : stdout;
fprintf(stream, "usage: %s [-srkh] [-c configure file]\n", cmd);
/* fprintf(stream, "\t-d\tsets debug level\n"); */
/* fprintf(stream, "\t-s\tgets daemon status\n"); */
/* fprintf(stream, "\t-r\trestarts daemon\n"); */
/* fprintf(stream, "\t-k\tstops daemon\n"); */
/* fprintf(stream, "\t-h\thelp message\n"); */
fflush(stream);
crm_exit(exit_status);
}
static void
stop_attrd_timer(attr_hash_entry_t * hash_entry)
{
if (hash_entry != NULL && hash_entry->timer_id != 0) {
crm_trace("Stopping %s timer", hash_entry->id);
g_source_remove(hash_entry->timer_id);
hash_entry->timer_id = 0;
}
}
static void
log_hash_entry(int level, attr_hash_entry_t * entry, const char *text)
{
do_crm_log(level, "%s: Set: %s, Name: %s, Value: %s, Timeout: %s",
text, entry->section, entry->id, entry->value, entry->dampen);
}
static attr_hash_entry_t *
find_hash_entry(xmlNode * msg)
{
const char *value = NULL;
const char *attr = crm_element_value(msg, F_ATTRD_ATTRIBUTE);
attr_hash_entry_t *hash_entry = NULL;
if (attr == NULL) {
crm_info("Ignoring message with no attribute name");
return NULL;
}
hash_entry = g_hash_table_lookup(attr_hash, attr);
if (hash_entry == NULL) {
/* create one and add it */
crm_info("Creating hash entry for %s", attr);
hash_entry = calloc(1, sizeof(attr_hash_entry_t));
hash_entry->id = strdup(attr);
g_hash_table_insert(attr_hash, hash_entry->id, hash_entry);
hash_entry = g_hash_table_lookup(attr_hash, attr);
CRM_CHECK(hash_entry != NULL, return NULL);
}
value = crm_element_value(msg, F_ATTRD_SET);
if (value != NULL) {
free(hash_entry->set);
hash_entry->set = strdup(value);
crm_debug("\t%s->set: %s", attr, value);
}
value = crm_element_value(msg, F_ATTRD_SECTION);
if (value == NULL) {
value = XML_CIB_TAG_STATUS;
}
free(hash_entry->section);
hash_entry->section = strdup(value);
crm_trace("\t%s->section: %s", attr, value);
value = crm_element_value(msg, F_ATTRD_DAMPEN);
if (value != NULL) {
free(hash_entry->dampen);
hash_entry->dampen = strdup(value);
hash_entry->timeout = crm_get_msec(value);
crm_trace("\t%s->timeout: %s", attr, value);
}
#if ENABLE_ACL
free(hash_entry->user);
hash_entry->user = NULL;
value = crm_element_value(msg, F_ATTRD_USER);
if (value != NULL) {
hash_entry->user = strdup(value);
crm_trace("\t%s->user: %s", attr, value);
}
#endif
log_hash_entry(LOG_DEBUG_2, hash_entry, "Found (and updated) entry:");
return hash_entry;
}
/*!
* \internal
* \brief Clear failure-related attributes for local node
*
* \param[in] xml XML of ATTRD_OP_CLEAR_FAILURE request
*/
static void
local_clear_failure(xmlNode *xml)
{
const char *rsc = crm_element_value(xml, F_ATTRD_RESOURCE);
const char *what = rsc? rsc : "all resources";
const char *op = crm_element_value(xml, F_ATTRD_OPERATION);
const char *interval_s = crm_element_value(xml, F_ATTRD_INTERVAL);
int interval = crm_get_interval(interval_s);
regex_t regex;
GHashTableIter iter;
attr_hash_entry_t *hash_entry = NULL;
if (attrd_failure_regex(®ex, rsc, op, interval) != pcmk_ok) {
crm_info("Ignoring invalid request to clear %s",
(rsc? rsc : "all resources"));
return;
}
crm_debug("Clearing %s locally", what);
/* Make sure value is not set, so we delete */
if (crm_element_value(xml, F_ATTRD_VALUE)) {
crm_xml_replace(xml, F_ATTRD_VALUE, NULL);
}
g_hash_table_iter_init(&iter, attr_hash);
while (g_hash_table_iter_next(&iter, NULL, (gpointer *) &hash_entry)) {
if (regexec(®ex, hash_entry->id, 0, NULL, 0) == 0) {
crm_trace("Matched %s when clearing %s", hash_entry->id, what);
update_local_attr(xml, hash_entry);
}
}
}
static void
remote_clear_callback(xmlNode *msg, int call_id, int rc, xmlNode *output,
void *user_data)
{
if (rc == 0) {
crm_debug("Successfully cleared failures using %s", user_data);
} else {
crm_notice("Failed to clear failures: %s " CRM_XS " call=%d xpath=%s rc=%d",
pcmk_strerror(rc), call_id, user_data, rc);
}
}
/* xpath component to match an id attribute (format takes remote node name) */
#define XPATH_ID "[@" XML_ATTR_UUID "='%s']"
/* Define the start of an xpath to match a remote node transient attribute
* (argument must be either an empty string to match for all remote nodes,
* or XPATH_ID to match for a single remote node)
*/
#define XPATH_REMOTE_ATTR(x) "/" XML_TAG_CIB "/" XML_CIB_TAG_STATUS \
"/" XML_CIB_TAG_STATE "[@" XML_NODE_IS_REMOTE "='true']" x \
"/" XML_TAG_TRANSIENT_NODEATTRS "/" XML_TAG_ATTR_SETS "/" XML_CIB_TAG_NVPAIR
/* xpath component to match an attribute name exactly */
#define XPATH_NAME_IS(x) "@" XML_NVPAIR_ATTR_NAME "='" x "'"
/* xpath component to match an attribute name by prefix */
#define XPATH_NAME_START(x) "starts-with(@" XML_NVPAIR_ATTR_NAME ", '" x "')"
/* xpath ending to clear all resources */
#define XPATH_CLEAR_ALL \
"[" XPATH_NAME_START(CRM_FAIL_COUNT_PREFIX "-") \
" or " XPATH_NAME_START(CRM_LAST_FAILURE_PREFIX "-") "]"
/* xpath ending to clear all operations for one resource
* (format takes resource name x 4)
*
* @COMPAT attributes set < 1.1.17:
* also match older attributes that do not have the operation part
*/
#define XPATH_CLEAR_ONE \
"[" XPATH_NAME_IS(CRM_FAIL_COUNT_PREFIX "-%s") \
" or " XPATH_NAME_IS(CRM_LAST_FAILURE_PREFIX "-%s") \
" or " XPATH_NAME_START(CRM_FAIL_COUNT_PREFIX "-%s#") \
" or " XPATH_NAME_START(CRM_LAST_FAILURE_PREFIX "-%s#") "]"
/* xpath ending to clear one operation for one resource
* (format takes resource name x 2, resource name + operation + interval x 2)
*
* @COMPAT attributes set < 1.1.17:
* also match older attributes that do not have the operation part
*/
#define XPATH_CLEAR_OP \
"[" XPATH_NAME_IS(CRM_FAIL_COUNT_PREFIX "-%s") \
" or " XPATH_NAME_IS(CRM_LAST_FAILURE_PREFIX "-%s") \
" or " XPATH_NAME_IS(CRM_FAIL_COUNT_PREFIX "-%s#%s_%d") \
" or " XPATH_NAME_IS(CRM_LAST_FAILURE_PREFIX "-%s#%s_%d") "]"
/*!
* \internal
* \brief Clear failure-related attributes for Pacemaker Remote node(s)
*
* \param[in] xml XML of ATTRD_OP_CLEAR_FAILURE request
*/
static void
remote_clear_failure(xmlNode *xml)
{
const char *rsc = crm_element_value(xml, F_ATTRD_RESOURCE);
const char *host = crm_element_value(xml, F_ATTRD_HOST);
const char *op = crm_element_value(xml, F_ATTRD_OPERATION);
int rc = pcmk_ok;
char *xpath;
if (cib_conn == NULL) {
crm_info("Ignoring request to clear %s on %s because not connected to CIB",
(rsc? rsc : "all resources"),
(host? host: "all remote nodes"));
return;
}
/* Build an xpath to clear appropriate attributes */
if (rsc == NULL) {
/* No resource specified, clear all resources */
if (host == NULL) {
xpath = crm_strdup_printf(XPATH_REMOTE_ATTR("") XPATH_CLEAR_ALL);
} else {
xpath = crm_strdup_printf(XPATH_REMOTE_ATTR(XPATH_ID) XPATH_CLEAR_ALL,
host);
}
} else if (op == NULL) {
/* Resource but no operation specified, clear all operations */
if (host == NULL) {
xpath = crm_strdup_printf(XPATH_REMOTE_ATTR("") XPATH_CLEAR_ONE,
rsc, rsc, rsc, rsc);
} else {
xpath = crm_strdup_printf(XPATH_REMOTE_ATTR(XPATH_ID) XPATH_CLEAR_ONE,
host, rsc, rsc, rsc, rsc);
}
} else {
/* Resource and operation specified */
const char *interval_s = crm_element_value(xml, F_ATTRD_INTERVAL);
int interval = crm_get_interval(interval_s);
if (host == NULL) {
xpath = crm_strdup_printf(XPATH_REMOTE_ATTR("") XPATH_CLEAR_OP,
rsc, rsc, rsc, op, interval,
rsc, op, interval);
} else {
xpath = crm_strdup_printf(XPATH_REMOTE_ATTR(XPATH_ID) XPATH_CLEAR_OP,
host, rsc, rsc, rsc, op, interval,
rsc, op, interval);
}
}
crm_trace("Clearing attributes matching %s", xpath);
rc = cib_conn->cmds->delete(cib_conn, xpath, NULL, cib_xpath|cib_multiple);
register_cib_callback(rc, xpath, remote_clear_callback, free);
}
static void
process_xml_request(xmlNode *xml)
{
attr_hash_entry_t *hash_entry = NULL;
const char *from = crm_element_value(xml, F_ORIG);
const char *op = crm_element_value(xml, F_ATTRD_TASK);
const char *host = crm_element_value(xml, F_ATTRD_HOST);
const char *ignore = crm_element_value(xml, F_ATTRD_IGNORE_LOCALLY);
if (host && safe_str_eq(host, attrd_uname)) {
crm_info("%s relayed from %s", (op? op : "Request"), from);
attrd_local_callback(xml);
} else if (safe_str_eq(op, ATTRD_OP_PEER_REMOVE)) {
CRM_CHECK(host != NULL, return);
crm_debug("Removing %s from peer caches for %s", host, from);
crm_remote_peer_cache_remove(host);
reap_crm_member(0, host);
} else if (safe_str_eq(op, ATTRD_OP_CLEAR_FAILURE)) {
local_clear_failure(xml);
} else if ((ignore == NULL) || safe_str_neq(from, attrd_uname)) {
crm_trace("%s message from %s", op, from);
hash_entry = find_hash_entry(xml);
stop_attrd_timer(hash_entry);
attrd_perform_update(hash_entry);
}
}
#if SUPPORT_HEARTBEAT
static void
attrd_ha_connection_destroy(gpointer user_data)
{
crm_trace("Invoked");
if (attrd_shutting_down()) {
/* we signed out, so this is expected */
crm_info("Heartbeat disconnection complete");
return;
}
crm_crit("Lost connection to heartbeat service!");
if (attrd_mainloop_running()) {
attrd_quit_mainloop();
return;
}
crm_exit(pcmk_ok);
}
static void
attrd_ha_callback(HA_Message * msg, void *private_data)
{
xmlNode *xml = convert_ha_message(NULL, msg, __FUNCTION__);
process_xml_request(xml);
free_xml(xml);
}
#endif
#if SUPPORT_COROSYNC
static void
attrd_cs_dispatch(cpg_handle_t handle,
const struct cpg_name *groupName,
uint32_t nodeid, uint32_t pid, void *msg, size_t msg_len)
{
uint32_t kind = 0;
xmlNode *xml = NULL;
const char *from = NULL;
char *data = pcmk_message_common_cs(handle, nodeid, pid, msg, &kind, &from);
if(data == NULL) {
return;
}
if (kind == crm_class_cluster) {
xml = string2xml(data);
if (xml == NULL) {
crm_err("Bad message received: '%.120s'", data);
}
}
if (xml != NULL) {
/* crm_xml_add_int(xml, F_SEQ, wrapper->id); */
crm_xml_add(xml, F_ORIG, from);
process_xml_request(xml);
free_xml(xml);
}
free(data);
}
static void
attrd_cs_destroy(gpointer unused)
{
if (attrd_shutting_down()) {
/* we signed out, so this is expected */
crm_info("Corosync disconnection complete");
return;
}
crm_crit("Lost connection to Corosync service!");
if (attrd_mainloop_running()) {
attrd_quit_mainloop();
return;
}
crm_exit(EINVAL);
}
#endif
static void
attrd_cib_connection_destroy(gpointer user_data)
{
cib_t *conn = user_data;
conn->cmds->signoff(conn); /* Ensure IPC is cleaned up */
if (attrd_shutting_down()) {
crm_info("Connection to the CIB terminated...");
} else {
/* eventually this will trigger a reconnect, not a shutdown */
crm_err("Connection to the CIB terminated...");
crm_exit(ENOTCONN);
}
return;
}
static void
update_for_hash_entry(gpointer key, gpointer value, gpointer user_data)
{
attr_hash_entry_t *entry = value;
if (entry->value != NULL || entry->stored_value != NULL) {
attrd_timer_callback(value);
}
}
static void
local_update_for_hash_entry(gpointer key, gpointer value, gpointer user_data)
{
attr_hash_entry_t *entry = value;
if (entry->timer_id == 0) {
crm_trace("Performing local-only update after replace for %s", entry->id);
attrd_perform_update(entry);
/* } else {
* just let the timer expire and attrd_timer_callback() will do the right thing
*/
}
}
static void
do_cib_replaced(const char *event, xmlNode * msg)
{
crm_info("Updating all attributes after %s event", event);
g_hash_table_foreach(attr_hash, local_update_for_hash_entry, NULL);
}
static gboolean
cib_connect(void *user_data)
{
static int attempts = 1;
static int max_retry = 20;
gboolean was_err = FALSE;
static cib_t *local_conn = NULL;
if (local_conn == NULL) {
local_conn = cib_new();
}
if (was_err == FALSE) {
int rc = -ENOTCONN;
if (attempts < max_retry) {
crm_debug("CIB signon attempt %d", attempts);
rc = local_conn->cmds->signon(local_conn, T_ATTRD, cib_command);
}
if (rc != pcmk_ok && attempts > max_retry) {
crm_err("Signon to CIB failed: %s", pcmk_strerror(rc));
was_err = TRUE;
} else if (rc != pcmk_ok) {
attempts++;
return TRUE;
}
}
crm_info("Connected to the CIB after %d signon attempts", attempts);
if (was_err == FALSE) {
int rc = local_conn->cmds->set_connection_dnotify(local_conn, attrd_cib_connection_destroy);
if (rc != pcmk_ok) {
crm_err("Could not set dnotify callback");
was_err = TRUE;
}
}
if (was_err == FALSE) {
if (pcmk_ok !=
local_conn->cmds->add_notify_callback(local_conn, T_CIB_REPLACE_NOTIFY,
do_cib_replaced)) {
crm_err("Could not set CIB notification callback");
was_err = TRUE;
}
}
if (was_err) {
crm_err("Aborting startup");
crm_exit(DAEMON_RESPAWN_STOP);
}
cib_conn = local_conn;
crm_info("Sending full refresh now that we're connected to the cib");
g_hash_table_foreach(attr_hash, local_update_for_hash_entry, NULL);
return FALSE;
}
int
main(int argc, char **argv)
{
int flag = 0;
int argerr = 0;
crm_cluster_t cluster;
gboolean was_err = FALSE;
qb_ipcs_connection_t *c = NULL;
qb_ipcs_service_t *ipcs = NULL;
crm_log_init(T_ATTRD, LOG_NOTICE, TRUE, FALSE, argc, argv, FALSE);
mainloop_add_signal(SIGTERM, attrd_shutdown);
while ((flag = getopt(argc, argv, OPTARGS)) != EOF) {
switch (flag) {
case 'V':
crm_bump_log_level(argc, argv);
break;
case 'h': /* Help message */
usage(T_ATTRD, EX_OK);
break;
default:
++argerr;
break;
}
}
if (optind > argc) {
++argerr;
}
if (argerr) {
usage(T_ATTRD, EX_USAGE);
}
attr_hash = g_hash_table_new_full(crm_str_hash, g_str_equal, NULL, free_hash_entry);
crm_info("Starting up");
if (was_err == FALSE) {
#if SUPPORT_COROSYNC
if (is_openais_cluster()) {
cluster.destroy = attrd_cs_destroy;
cluster.cpg.cpg_deliver_fn = attrd_cs_dispatch;
cluster.cpg.cpg_confchg_fn = pcmk_cpg_membership;
}
#endif
#if SUPPORT_HEARTBEAT
if (is_heartbeat_cluster()) {
cluster.hb_conn = NULL;
cluster.hb_dispatch = attrd_ha_callback;
cluster.destroy = attrd_ha_connection_destroy;
}
#endif
if (FALSE == crm_cluster_connect(&cluster)) {
crm_err("HA Signon failed");
was_err = TRUE;
}
attrd_uname = cluster.uname;
attrd_uuid = cluster.uuid;
#if SUPPORT_HEARTBEAT
attrd_cluster_conn = cluster.hb_conn;
#endif
}
crm_info("Cluster connection active");
if (was_err == FALSE) {
attrd_init_ipc(&ipcs, attrd_ipc_dispatch);
}
crm_info("Accepting attribute updates");
attrd_init_mainloop();
if (0 == g_timeout_add_full(G_PRIORITY_LOW + 1, 5000, cib_connect, NULL, NULL)) {
crm_info("Adding timer failed");
was_err = TRUE;
}
if (was_err) {
crm_err("Aborting startup");
return 100;
}
crm_notice("Starting mainloop...");
attrd_run_mainloop();
crm_notice("Exiting...");
#if SUPPORT_HEARTBEAT
if (is_heartbeat_cluster()) {
attrd_cluster_conn->llc_ops->signoff(attrd_cluster_conn, TRUE);
attrd_cluster_conn->llc_ops->delete(attrd_cluster_conn);
}
#endif
c = qb_ipcs_connection_first_get(ipcs);
while (c != NULL) {
qb_ipcs_connection_t *last = c;
c = qb_ipcs_connection_next_get(ipcs, last);
/* There really shouldn't be anyone connected at this point */
crm_notice("Disconnecting client %p, pid=%d...", last, crm_ipcs_client_pid(last));
qb_ipcs_disconnect(last);
qb_ipcs_connection_unref(last);
}
qb_ipcs_destroy(ipcs);
if (cib_conn) {
cib_conn->cmds->signoff(cib_conn);
cib_delete(cib_conn);
}
g_hash_table_destroy(attr_hash);
free(attrd_uuid);
return crm_exit(pcmk_ok);
}
struct attrd_callback_s {
char *attr;
char *value;
};
/*!
* \internal
* \brief Free an attrd callback structure
*/
static void
free_attrd_callback(void *user_data)
{
struct attrd_callback_s *data = user_data;
free(data->attr);
free(data->value);
free(data);
}
static void
attrd_cib_callback(xmlNode * msg, int call_id, int rc, xmlNode * output, void *user_data)
{
attr_hash_entry_t *hash_entry = NULL;
struct attrd_callback_s *data = user_data;
if (data->value == NULL && rc == -ENXIO) {
rc = pcmk_ok;
} else if (call_id < 0) {
crm_warn("Update %s=%s failed: %s", data->attr, data->value, pcmk_strerror(call_id));
return;
}
switch (rc) {
case pcmk_ok:
crm_debug("Update %d for %s=%s passed", call_id, data->attr, data->value);
hash_entry = g_hash_table_lookup(attr_hash, data->attr);
if (hash_entry) {
free(hash_entry->stored_value);
hash_entry->stored_value = NULL;
if (data->value != NULL) {
hash_entry->stored_value = strdup(data->value);
}
}
break;
case -pcmk_err_diff_failed: /* When an attr changes while the CIB is syncing */
case -ETIME: /* When an attr changes while there is a DC election */
case -ENXIO: /* When an attr changes while the CIB is syncing a
* newer config from a node that just came up
*/
crm_warn("Update %d for %s=%s failed: %s",
call_id, data->attr, data->value, pcmk_strerror(rc));
break;
default:
crm_err("Update %d for %s=%s failed: %s",
call_id, data->attr, data->value, pcmk_strerror(rc));
}
}
void
attrd_perform_update(attr_hash_entry_t * hash_entry)
{
int rc = pcmk_ok;
struct attrd_callback_s *data = NULL;
const char *user_name = NULL;
if (hash_entry == NULL) {
return;
} else if (cib_conn == NULL) {
crm_info("Delaying operation %s=%s: cib not connected", hash_entry->id,
crm_str(hash_entry->value));
return;
}
#if ENABLE_ACL
if (hash_entry->user) {
user_name = hash_entry->user;
crm_trace("Performing request from user '%s'", hash_entry->user);
}
#endif
if (hash_entry->value == NULL) {
/* delete the attr */
rc = delete_attr_delegate(cib_conn, cib_none, hash_entry->section, attrd_uuid, NULL,
hash_entry->set, hash_entry->uuid, hash_entry->id, NULL, FALSE,
user_name);
if (rc >= 0 && hash_entry->stored_value) {
crm_notice("Sent delete %d: node=%s, attr=%s, id=%s, set=%s, section=%s",
rc, attrd_uuid, hash_entry->id,
hash_entry->uuid ? hash_entry->uuid : "<n/a>", hash_entry->set,
hash_entry->section);
} else if (rc < 0 && rc != -ENXIO) {
crm_notice
("Delete operation failed: node=%s, attr=%s, id=%s, set=%s, section=%s: %s (%d)",
attrd_uuid, hash_entry->id, hash_entry->uuid ? hash_entry->uuid : "<n/a>",
hash_entry->set, hash_entry->section, pcmk_strerror(rc), rc);
} else {
crm_trace("Sent delete %d: node=%s, attr=%s, id=%s, set=%s, section=%s",
rc, attrd_uuid, hash_entry->id,
hash_entry->uuid ? hash_entry->uuid : "<n/a>", hash_entry->set,
hash_entry->section);
}
} else {
/* send update */
rc = update_attr_delegate(cib_conn, cib_none, hash_entry->section,
attrd_uuid, NULL, hash_entry->set, hash_entry->uuid,
hash_entry->id, hash_entry->value, FALSE, user_name, NULL);
if (rc < 0) {
crm_notice("Sent update %s=%s failed: %s", hash_entry->id, hash_entry->value,
pcmk_strerror(rc));
}
if (safe_str_neq(hash_entry->value, hash_entry->stored_value) || rc < 0) {
crm_notice("Sent update %d: %s=%s", rc, hash_entry->id, hash_entry->value);
} else {
crm_trace("Sent update %d: %s=%s", rc, hash_entry->id, hash_entry->value);
}
}
data = calloc(1, sizeof(struct attrd_callback_s));
data->attr = strdup(hash_entry->id);
if (hash_entry->value != NULL) {
data->value = strdup(hash_entry->value);
}
register_cib_callback(rc, data, attrd_cib_callback, free_attrd_callback);
return;
}
/*!
* \internal
* \brief Expand attribute values that use "++" or "+="
*
* \param[in] value Attribute value to expand
* \param[in] old_value Previous value of attribute
*
* \return Newly allocated string with expanded value, or NULL if not expanded
*/
static char *
expand_attr_value(const char *value, const char *old_value)
{
char *expanded = NULL;
if (attrd_value_needs_expansion(value)) {
expanded = crm_itoa(attrd_expand_value(value, old_value));
}
return expanded;
}
/*!
* \internal
* \brief Update a single node attribute for this node
*
* \param[in] msg XML message with update
* \param[in,out] hash_entry Node attribute structure
*/
static void
update_local_attr(xmlNode *msg, attr_hash_entry_t *hash_entry)
{
const char *value = crm_element_value(msg, F_ATTRD_VALUE);
char *expanded = NULL;
if (hash_entry->uuid == NULL) {
const char *key = crm_element_value(msg, F_ATTRD_KEY);
if (key) {
hash_entry->uuid = strdup(key);
}
}
crm_debug("Request to update %s (%s) to %s from %s (stored: %s)",
hash_entry->id, (hash_entry->uuid? hash_entry->uuid : "no uuid"),
value, hash_entry->value, hash_entry->stored_value);
if (safe_str_eq(value, hash_entry->value)
&& safe_str_eq(value, hash_entry->stored_value)) {
crm_trace("Ignoring non-change");
return;
} else if (value) {
expanded = expand_attr_value(value, hash_entry->value);
if (expanded) {
crm_info("Expanded %s=%s to %s", hash_entry->id, value, expanded);
value = expanded;
}
}
if (safe_str_eq(value, hash_entry->value) && hash_entry->timer_id) {
/* We're already waiting to set this value */
free(expanded);
return;
}
free(hash_entry->value);
hash_entry->value = NULL;
if (value != NULL) {
hash_entry->value = (expanded? expanded : strdup(value));
crm_debug("New value of %s is %s", hash_entry->id, value);
}
stop_attrd_timer(hash_entry);
if (hash_entry->timeout > 0) {
hash_entry->timer_id = g_timeout_add(hash_entry->timeout, attrd_timer_callback, hash_entry);
} else {
attrd_trigger_update(hash_entry);
}
}
/*!
* \internal
* \brief Log the result of a CIB operation for a remote attribute
*
* \param[in] msg ignored
* \param[in] id CIB operation ID
* \param[in] rc CIB operation result
* \param[in] output ignored
* \param[in] data User-friendly string describing operation
*/
static void
remote_attr_callback(xmlNode *msg, int id, int rc, xmlNode *output, void *data)
{
if (rc == pcmk_ok) {
crm_debug("%s succeeded " CRM_XS " call=%d", data, id);
} else {
crm_notice("%s failed: %s " CRM_XS " call=%d rc=%d",
data, pcmk_strerror(rc), id, rc);
}
}
/*!
* \internal
* \brief Update a Pacemaker Remote node attribute via CIB only
*
* \param[in] host Pacemaker Remote node name
* \param[in] name Attribute name
* \param[in] value New attribute value
* \param[in] section CIB section to update (defaults to status if NULL)
* \param[in] user_name User to perform operation as
*
* \note Legacy attrd does not track remote node attributes, so such requests
* are only sent to the CIB. This means that dampening is ignored, and
* updates for the same attribute submitted to different nodes cannot be
* reliably ordered. This is not ideal, but allows remote nodes to
* be supported, and should be acceptable in practice.
*/
static void
update_remote_attr(const char *host, const char *name, const char *value,
const char *section, const char *user_name)
{
int rc = pcmk_ok;
char *desc;
if (value == NULL) {
desc = crm_strdup_printf("Delete of %s in %s for %s",