gboolean
query_quorum(gpointer data)
{
int quorum;
size_t len;
char* s = NULL;
char buf[MAXMSG];
struct ha_msg* msg = NULL;
struct ha_msg* ret = NULL;
if(session != NULL) {
msg = ha_msg_new(10);
ha_msg_add(msg, "t","quorum");
ha_msg_add_int(msg, "nodenum", nodenum);
ha_msg_add_int(msg, "weight", weight);
s = msg2wirefmt(msg, &len);
gnutls_record_send(session, s, len);
free(s);
len = gnutls_record_recv(session, buf, MAXMSG);
if ((ssize_t)len < 0) {
gnutls_bye (session, GNUTLS_SHUT_WR);
gnutls_deinit (session);
close(sock);
session = NULL;
cur_quorum = -1;
ha_msg_del(msg);
return TRUE;
}
ret = wirefmt2msg(buf, len, FALSE);
ha_msg_value_int(ret, "quorum", &quorum);
ha_msg_del(ret);
ha_msg_del(msg);
if (cur_quorum!=-1 && cur_quorum!=quorum && callback!=NULL){
cur_quorum = quorum;
callback();
}
cur_quorum = quorum;
}
else {
connect_quorum_server(NULL);
}
return TRUE;
}
static gboolean
send_rexmit_request( gpointer data)
{
struct rexmit_info* ri = (struct rexmit_info*) data;
seqno_t seq = (seqno_t) ri->seq;
struct node_info* node = ri->node;
struct ha_msg* hmsg;
if ((hmsg = ha_msg_new(6)) == NULL) {
cl_log(LOG_ERR, "%s: no memory for " T_REXMIT,
__FUNCTION__);
return FALSE;
}
if (ha_msg_add(hmsg, F_TYPE, T_REXMIT) != HA_OK
|| ha_msg_add(hmsg, F_TO, node->nodename) !=HA_OK
|| ha_msg_add_int(hmsg, F_FIRSTSEQ, seq) != HA_OK
|| ha_msg_add_int(hmsg, F_LASTSEQ, seq) != HA_OK) {
cl_log(LOG_ERR, "%s: adding fields to msg failed",
__FUNCTION__);
ha_msg_del(hmsg);
return FALSE;
}
if (send_cluster_msg(hmsg) != HA_OK) {
cl_log(LOG_ERR, "%s: cannot send " T_REXMIT
" request to %s",__FUNCTION__, node->nodename);
ha_msg_del(hmsg);
return FALSE;
}
node->track.last_rexmit_req = time_longclock();
if (!g_hash_table_remove(rexmit_hash_table, ri)){
cl_log(LOG_ERR, "%s: entry not found in rexmit_hash_table"
"for seq/node(%ld %s)",
__FUNCTION__, ri->seq, ri->node->nodename);
return FALSE;
}
schedule_rexmit_request(node, seq, max_rexmit_delay);
return FALSE;
}
static void
struct_memfree( void* value)
{
struct ha_msg* msg;
if (!value){
cl_log(LOG_ERR,
"value is NULL");
return ;
}
msg = (struct ha_msg*) value;
ha_msg_del(msg);
return ;
}
static HA_Message *
convert_xml_message_struct(HA_Message * parent, xmlNode * src_node, const char *field)
{
xmlNode *child = NULL;
xmlNode *__crm_xml_iter = src_node->children;
xmlAttrPtr prop_iter = src_node->properties;
const char *name = NULL;
const char *value = NULL;
HA_Message *result = ha_msg_new(3);
ha_msg_add(result, F_XML_TAGNAME, (const char *)src_node->name);
while (prop_iter != NULL) {
name = (const char *)prop_iter->name;
value = (const char *)xmlGetProp(src_node, prop_iter->name);
prop_iter = prop_iter->next;
ha_msg_add(result, name, value);
}
while (__crm_xml_iter != NULL) {
child = __crm_xml_iter;
__crm_xml_iter = __crm_xml_iter->next;
convert_xml_message_struct(result, child, NULL);
}
if (parent == NULL) {
return result;
}
if (field) {
HA_Message *holder = ha_msg_new(3);
CRM_ASSERT(holder != NULL);
ha_msg_add(holder, F_XML_TAGNAME, field);
add_ha_nocopy(holder, result, (const char *)src_node->name);
ha_msg_addstruct_compress(parent, field, holder);
ha_msg_del(holder);
} else {
add_ha_nocopy(parent, result, (const char *)src_node->name);
}
return result;
}
/* send_message_to_the_peer()
* send message with drbd resource to other node.
*/
static gboolean
send_message_to_the_peer(const char *drbd_peer, const char *drbd_resource)
{
HA_Message *msg = NULL;
cl_log(LOG_INFO, "sending start_outdate message to the other node %s -> %s",
node_name, drbd_peer);
msg = ha_msg_new(3);
ha_msg_add(msg, F_TYPE, "start_outdate");
ha_msg_add(msg, F_ORIG, node_name);
ha_msg_add(msg, F_DOPD_RES, drbd_resource);
cl_log(LOG_DEBUG, "sending [start_outdate res: %s] to node: %s",
drbd_resource, drbd_peer);
dopd_cluster_conn->llc_ops->sendnodemsg(dopd_cluster_conn, msg, drbd_peer);
ha_msg_del(msg);
return TRUE;
}
static int
compress2uncompress(struct ha_msg* msg, int index)
{
char *buf = NULL;
size_t buflen = MAXUNCOMPRESSED;
struct ha_msg* msgfield;
int err = HA_FAIL;
buf = cl_malloc(buflen);
if (!buf) {
cl_log(LOG_ERR, "%s: allocating buffer for uncompression failed",
__FUNCTION__);
goto out;
}
if (cl_decompress_field(msg, index, buf, &buflen) != HA_OK){
cl_log(LOG_ERR, "%s: compress field failed",
__FUNCTION__);
goto out;
}
msgfield = wirefmt2msg(buf, buflen, 0);
if (msgfield == NULL){
cl_log(LOG_ERR, "%s: wirefmt to msg failed",
__FUNCTION__);
goto out;
}
err = cl_msg_replace(msg, index, (char*)msgfield, 0, FT_UNCOMPRESS);
ha_msg_del(msgfield);
out:
if (buf) {
cl_free(buf);
}
return err;
}
gboolean
connect_quorum_server(gpointer data)
{
struct sockaddr_in addr;
struct ha_msg* msg = NULL;
struct ha_msg* ret = NULL;
const char* version = "2_0_8";
struct hostent* hp;
int quorum;
size_t len;
char* s = NULL;
char buf[MAXMSG];
cl_log(LOG_DEBUG, "quorum plugin: quorumd, connect_quorum_server");
/* initialize gnutls */
initialize_tls_global();
/* create socket */
sock=socket(PF_INET, SOCK_STREAM, IPPROTO_TCP);
if (sock == -1 ) {
return FALSE;
}
/* connect to server*/
memset(&addr, 0, sizeof(addr));
addr.sin_family = AF_INET;
hp = gethostbyname(quorum_server);
if (hp == NULL) {
return FALSE;
}
memcpy(&addr.sin_addr, hp->h_addr_list[0], sizeof(struct in_addr));
addr.sin_port = htons(5561);
if (connect(sock, (struct sockaddr *) &addr, sizeof(addr)) == -1) {
return FALSE;
}
session = initialize_tls_session(sock);
if (session == NULL) {
close(sock);
session = NULL;
return FALSE;
}
/* send the version */
gnutls_record_send(session, version, strlen(version)+1);
/* send initialize msg */
msg = ha_msg_new(10);
ha_msg_add(msg, "t","init");
ha_msg_add(msg, "cl_name", cluster);
s = msg2wirefmt(msg, &len);
gnutls_record_send(session, s, len);
free(s);
len = gnutls_record_recv(session, buf, MAXMSG);
if ((ssize_t)len <=0) {
close(sock);
session = NULL;
return FALSE;
}
ret = wirefmt2msg(buf, len, FALSE);
if (STRNCMP_CONST(ha_msg_value(ret, "result"), "ok") != 0) {
close(sock);
session = NULL;
return FALSE;
}
if (ha_msg_value_int(ret, "interval", &interval)!= HA_OK) {
close(sock);
session = NULL;
return FALSE;
}
ha_msg_del(ret);
ha_msg_del(msg);
/* send quorum query msg */
msg = ha_msg_new(10);
ha_msg_add(msg, "t","quorum");
ha_msg_add_int(msg, "nodenum", nodenum);
ha_msg_add_int(msg, "weight", weight);
s = msg2wirefmt(msg, &len);
gnutls_record_send(session, s, len);
free(s);
len = gnutls_record_recv(session, buf, MAXMSG);
ret = wirefmt2msg(buf, len, FALSE);
ha_msg_value_int(ret, "quorum", &quorum);
LOG(LOG_DEBUG,"quorum:%d\n", quorum);
cur_quorum = quorum;
ha_msg_del(ret);
ha_msg_del(msg);
/* set the repeatly query */
repeat_timer = g_timeout_add(interval, query_quorum, NULL);
return FALSE;
}
enum cib_errors
cib_process_diff(
const char *op, int options, const char *section, crm_data_t *input,
crm_data_t *existing_cib, crm_data_t **result_cib, crm_data_t **answer)
{
unsigned int log_level = LOG_DEBUG;
const char *value = NULL;
const char *reason = NULL;
gboolean apply_diff = TRUE;
gboolean do_resync = FALSE;
enum cib_errors result = cib_ok;
int this_updates = 0;
int this_epoch = 0;
int this_admin_epoch = 0;
int diff_add_updates = 0;
int diff_add_epoch = 0;
int diff_add_admin_epoch = 0;
int diff_del_updates = 0;
int diff_del_epoch = 0;
int diff_del_admin_epoch = 0;
crm_debug_2("Processing \"%s\" event", op);
if(cib_is_master) {
/* the master is never waiting for a resync */
sync_in_progress = 0;
}
cib_diff_version_details(
input,
&diff_add_admin_epoch, &diff_add_epoch, &diff_add_updates,
&diff_del_admin_epoch, &diff_del_epoch, &diff_del_updates);
if(sync_in_progress > MAX_DIFF_RETRY) {
/* request another full-sync,
* the last request may have been lost
*/
sync_in_progress = 0;
}
if(sync_in_progress) {
sync_in_progress++;
crm_warn("Not applying diff %d.%d.%d -> %d.%d.%d (sync in progress)",
diff_del_admin_epoch,diff_del_epoch,diff_del_updates,
diff_add_admin_epoch,diff_add_epoch,diff_add_updates);
return cib_diff_resync;
}
value = crm_element_value(existing_cib, XML_ATTR_GENERATION);
this_epoch = atoi(value?value:"0");
value = crm_element_value(existing_cib, XML_ATTR_NUMUPDATES);
this_updates = atoi(value?value:"0");
value = crm_element_value(existing_cib, XML_ATTR_GENERATION_ADMIN);
this_admin_epoch = atoi(value?value:"0");
if(diff_del_admin_epoch == diff_add_admin_epoch
&& diff_del_epoch == diff_add_epoch
&& diff_del_updates == diff_add_updates) {
if(diff_add_admin_epoch == -1 && diff_add_epoch == -1 && diff_add_updates == -1) {
diff_add_epoch = this_epoch;
diff_add_updates = this_updates + 1;
diff_add_admin_epoch = this_admin_epoch;
diff_del_epoch = this_epoch;
diff_del_updates = this_updates;
diff_del_admin_epoch = this_admin_epoch;
} else {
apply_diff = FALSE;
log_level = LOG_ERR;
reason = "+ and - versions in the diff did not change";
log_cib_diff(LOG_ERR, input, __FUNCTION__);
}
}
if(apply_diff && diff_del_admin_epoch > this_admin_epoch) {
do_resync = TRUE;
apply_diff = FALSE;
log_level = LOG_INFO;
reason = "current \""XML_ATTR_GENERATION_ADMIN"\" is less than required";
} else if(apply_diff && diff_del_admin_epoch < this_admin_epoch) {
apply_diff = FALSE;
log_level = LOG_WARNING;
reason = "current \""XML_ATTR_GENERATION_ADMIN"\" is greater than required";
}
if(apply_diff && diff_del_epoch > this_epoch) {
do_resync = TRUE;
apply_diff = FALSE;
log_level = LOG_INFO;
reason = "current \""XML_ATTR_GENERATION"\" is less than required";
} else if(apply_diff && diff_del_epoch < this_epoch) {
apply_diff = FALSE;
log_level = LOG_WARNING;
reason = "current \""XML_ATTR_GENERATION"\" is greater than required";
}
if(apply_diff && diff_del_updates > this_updates) {
do_resync = TRUE;
apply_diff = FALSE;
log_level = LOG_INFO;
reason = "current \""XML_ATTR_NUMUPDATES"\" is less than required";
} else if(apply_diff && diff_del_updates < this_updates) {
apply_diff = FALSE;
log_level = LOG_WARNING;
reason = "current \""XML_ATTR_NUMUPDATES"\" is greater than required";
}
if(apply_diff) {
free_xml(*result_cib);
*result_cib = NULL;
if(apply_xml_diff(existing_cib, input, result_cib) == FALSE) {
log_level = LOG_WARNING;
reason = "Failed application of an update diff";
if(options & cib_force_diff) {
if(cib_is_master == FALSE) {
log_level = LOG_INFO;
reason = "Failed application of a global update."
" Requesting full refresh.";
do_resync = TRUE;
} else {
reason = "Failed application of a global update."
" Not requesting full refresh.";
}
}
} else if((options & cib_force_diff) && !validate_with_dtd(
*result_cib, FALSE, HA_NOARCHDATAHBDIR"/crm.dtd")) {
if(cib_is_master == FALSE) {
log_level = LOG_INFO;
reason = "Failed DTD validation of a global update."
" Requesting full refresh.";
do_resync = TRUE;
} else {
log_level = LOG_WARNING;
reason = "Failed DTD validation of a global update."
" Not requesting full refresh.";
}
}
}
if(reason != NULL) {
do_crm_log(
log_level,
"Diff %d.%d.%d -> %d.%d.%d not applied to %d.%d.%d: %s",
diff_del_admin_epoch,diff_del_epoch,diff_del_updates,
diff_add_admin_epoch,diff_add_epoch,diff_add_updates,
this_admin_epoch,this_epoch,this_updates, reason);
result = cib_diff_failed;
} else if(apply_diff) {
crm_debug_2("Diff %d.%d.%d -> %d.%d.%d was applied",
diff_del_admin_epoch,diff_del_epoch,diff_del_updates,
diff_add_admin_epoch,diff_add_epoch,diff_add_updates);
}
if(do_resync && cib_is_master == FALSE) {
HA_Message *sync_me = ha_msg_new(3);
free_xml(*result_cib);
*result_cib = NULL;
result = cib_diff_resync;
crm_info("Requesting re-sync from peer: %s", reason);
sync_in_progress++;
ha_msg_add(sync_me, F_TYPE, "cib");
ha_msg_add(sync_me, F_CIB_OPERATION, CIB_OP_SYNC_ONE);
ha_msg_add(sync_me, F_CIB_DELEGATED, cib_our_uname);
if(send_ha_message(hb_conn, sync_me, NULL, FALSE) == FALSE) {
result = cib_not_connected;
}
ha_msg_del(sync_me);
} else if(do_resync) {
crm_err("Not resyncing in master mode");
}
return result;
}
