/**
* \brief This function adds TagDestroy command to the queue of the session
*/
int vs_tag_send_destroy(struct VSNode *node,
struct VSTagGroup *tg,
struct VSTag *tag)
{
struct VSEntityFollower *tag_follower;
struct Generic_Cmd *tag_destroy_cmd;
int ret = 0;
tag_follower = tag->tag_folls.first;
while(tag_follower != NULL) {
/* Client can receive tag_destroy command only in situation, when
* this client already received tag_create command */
if(tag_follower->state == ENTITY_CREATED) {
tag_destroy_cmd = v_tag_destroy_create(node->id, tg->id, tag->id);
if( tag_destroy_cmd != NULL &&
(v_out_queue_push_tail(tag_follower->node_sub->session->out_queue,
0,
tag_follower->node_sub->prio,
tag_destroy_cmd) == 1)) {
tag_follower->state = ENTITY_DELETING;
ret = 1;
} else {
v_print_log(VRS_PRINT_DEBUG_MSG, "Tag_Destroy (node_id: %d, taggroup_id: %d, tag_id: %d) wasn't added to the queue\n",
node->id, tg->id, tag->id);
}
}
tag_follower = tag_follower->next;
}
tag->state = ENTITY_DELETING;
return ret;
}
int32_t vrs_send_tag_destroy(const uint8_t session_id,
const uint8_t prio,
const uint32_t node_id,
const uint16_t taggroup_id,
const uint16_t tag_id)
{
struct Generic_Cmd *tag_destroy_cmd = v_tag_destroy_create(node_id, taggroup_id, tag_id);
return vc_send_command(session_id, prio, tag_destroy_cmd);
}
/**
* \brief This function tries to handle Tag_Create command.
*
* This function change state of follower from CREATING to CREATED
* and it sends value to this client.
*/
int vs_handle_tag_create_ack(struct VS_CTX *vs_ctx,
struct VSession *vsession,
struct Generic_Cmd *cmd)
{
struct VSNode *node;
struct VSTagGroup *tg;
struct VSTag *tag;
struct VSEntityFollower *tag_follower;
struct Tag_Create_Ack_Cmd *tag_create_ack = (struct Tag_Create_Ack_Cmd*)cmd;
uint32 node_id = tag_create_ack->node_id;
uint16 taggroup_id = tag_create_ack->taggroup_id;
uint16 tag_id = tag_create_ack->tag_id;
int all_created = 1, tag_found = 0, ret = 0;
/* Try to find node */
if((node = vs_node_find(vs_ctx, node_id)) == NULL) {
v_print_log(VRS_PRINT_DEBUG_MSG, "%s() node (id: %d) not found\n",
__FUNCTION__, node_id);
return 0;
}
pthread_mutex_lock(&node->mutex);
/* Try to find TagGroup */
if( (tg = vs_taggroup_find(node, taggroup_id)) == NULL) {
v_print_log(VRS_PRINT_DEBUG_MSG, "%s() tag_group (id: %d) in node (id: %d) not found\n",
__FUNCTION__, taggroup_id, node_id);
goto end;
}
/* Try to find Tag */
if ( (tag = vs_tag_find(tg, tag_id)) == NULL) {
v_print_log(VRS_PRINT_DEBUG_MSG, "%s() tag (id: %d) in tag_group (id: %d), node (id: %d) not found\n",
__FUNCTION__, tag_id, taggroup_id, node_id);
goto end;
}
/* Try to find tag follower that generated this fake command */
tag_follower = tag->tag_folls.first;
while(tag_follower != NULL) {
if(tag_follower->node_sub->session->session_id == vsession->session_id) {
tag_found = 1;
/* When tag contain value, then send this value to the client */
if( (tag->flag & TAG_INITIALIZED) && (tag_follower->state != ENTITY_CREATED)) {
ret = vs_tag_send_set(tag_follower->node_sub->session, tag_follower->node_sub->prio, node, tg, tag);
}
tag_follower->state = ENTITY_CREATED;
/* When this tag has been destroyed during sending tag_create
* command, then send tag_destroy command now */
if(tag->state == ENTITY_DELETING) {
struct Generic_Cmd *tag_destroy_cmd = v_tag_destroy_create(node->id, tg->id, tag->id);
if( tag_destroy_cmd != NULL &&
(v_out_queue_push_tail(tag_follower->node_sub->session->out_queue,
0,
tag_follower->node_sub->prio,
tag_destroy_cmd) == 1))
{
tag_follower->state = ENTITY_DELETING;
} else {
v_print_log(VRS_PRINT_DEBUG_MSG,
"Tag_Destroy (node_id: %d, taggroup_id: %d, tag_id: %d) wasn't added to the queue\n",
node->id, tg->id, tag->id);
ret = 0;
}
}
} else if(tag_follower->state != ENTITY_CREATED) {
all_created = 0;
}
tag_follower = tag_follower->next;
}
/* When all clients knows about this tag, then switch tag to state CREATED */
if(all_created == 1) {
tag->state = ENTITY_CREATED;
}
if(tag_found == 0) {
v_print_log(VRS_PRINT_DEBUG_MSG,
"%s() tag_follower of tag (id: %d) in tag_group (id: %d) in node (id: %d) not found\n",
__FUNCTION__, tag_id, tg->id, node->id);
} else {
ret = 1;
}
end:
pthread_mutex_unlock(&node->mutex);
return ret;
}
