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High Performance OPC UA Server SDK
1.2.0.193
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High Performance OPC UA Server SDK
1.2.0.193
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Register/Unregister eventnotifiers and fire events. More...
Data Structures | |
| struct | uaserver_eventnotifier |
Functions | |
| int | uaserver_eventnotifier_init (void) |
| Initialize the eventnotifier handling. More... | |
| void | uaserver_eventnotifier_clear (void) |
| Clear resources allocated by the eventnotifier handling. More... | |
| int | uaserver_eventnotifier_register (ua_node_t event_notifier, ua_node_t parent_notifier, bool is_event_source) |
| Register an event notifier or event source. More... | |
| int | uaserver_eventnotifier_register_all (uint16_t nsidx) |
Register all eventnotifiers and eventsources from the namespace with index nsidx. More... | |
| int | uaserver_eventnotifier_unregister (ua_node_t event_notifier) |
| Unregister an eventnotifier or eventsource. More... | |
| int | uaserver_eventnotifier_unregister_all (uint16_t nsidx) |
Unregister all eventnotifiers from the namespace with index nsidx. More... | |
| bool | uaserver_eventnotifier_exists (const struct ua_nodeid *event_notifier) |
Check if the event_notifier is registered. More... | |
| int | uaserver_eventnotifier_add_item (struct ua_monitoreditem *item) |
| int | uaserver_eventnotifier_remove_item (struct ua_monitoreditem *item) |
| int | uaserver_eventnotifier_fire_event (struct uaserver_event *e) |
| Distribute an event created with uaserver_event_create to all subscribed monitored items. More... | |
Register/Unregister eventnotifiers and fire events.
| void uaserver_eventnotifier_clear | ( | void | ) |
Clear resources allocated by the eventnotifier handling.
This is done automatically by the SDK at server shutdown.
| bool uaserver_eventnotifier_exists | ( | const struct ua_nodeid * | event_notifier | ) |
Check if the event_notifier is registered.
Returns true only for eventnotfiers, not for eventsources.
| int uaserver_eventnotifier_fire_event | ( | struct uaserver_event * | e | ) |
Distribute an event created with uaserver_event_create to all subscribed monitored items.
The eventnotifier is determined by the SourceNode field set at creation.
The event is not modified by this function, but its fields may need to be resorted, so it cannot be const.
| int uaserver_eventnotifier_init | ( | void | ) |
Initialize the eventnotifier handling.
This is done automatically by the SDK at server initializiation.
| int uaserver_eventnotifier_register | ( | ua_node_t | event_notifier, |
| ua_node_t | parent_notifier, | ||
| bool | is_event_source | ||
| ) |
Register an event notifier or event source.
This will build up an internal hierarchy of event notifiers and event sources as leaf elements. It is required to efficiently distribute events to registered monitored items.
| event_notifier | Node handle of the notifier or source. |
| parent_notifier | Node handle of the parent of the notifier or source, this must always be a notifier and not a source. This is optional for the Server object, but all other notifiers and sources should have a parent. |
| is_event_source | false to register a notifier, true to register a source. |
| int uaserver_eventnotifier_register_all | ( | uint16_t | nsidx | ) |
Register all eventnotifiers and eventsources from the namespace with index nsidx.
Traverse the addressspace and register all eventnotifiers and eventsource where the nodeid matches the given nsidx. In case of error already registered eventnotifiers and eventsources are not unregistered.
The traversal starts at the server object, all eventnotifiers must be reachable from there with hasnotifer references. Eventsources must be reference from their notifiers with the haseventsource reference.
| int uaserver_eventnotifier_unregister | ( | ua_node_t | event_notifier | ) |
Unregister an eventnotifier or eventsource.
Only eventnotifiers without children can be unregistered, so first eventsources must be unregistered and then eventnotifiers from bottom to top.
| int uaserver_eventnotifier_unregister_all | ( | uint16_t | nsidx | ) |
Unregister all eventnotifiers from the namespace with index nsidx.