3.1.4.1.59 ApiAddNotifyNode (Opnum 58)

(Protocol Version 2) The ApiAddNotifyNode method instructs the server to begin queuing event indications. Event indications correspond to internal cluster node state and configuration changes that map to a value in the designated filter of the designated version 1 notification port. Indications are queued for the node represented by the designated context handle.

The server MUST queue a separate event indication to the port for every filter that has the CLUSTER_CHANGE (section 2.2.2.7) value set (section 2.2.2.7) that corresponds to the internal event.

The server SHOULD accept an ApiAddNotifyNode request if its protocol server state is read-only and MUST accept the request for processing if it is in the read/write state, as specified in section 3.1.1.

 error_status_t ApiAddNotifyNode(
   [in] HNOTIFY_RPC hNotify,
   [in] HNODE_RPC hNode,
   [in] DWORD dwFilter,
   [in] DWORD dwNotifyKey,
   [out] DWORD *dwStateSequence
 );

hNotify: An HNOTIFY_RPC (section 2.2.1.6) context handle that was obtained in a previous ApiCreateNotify (section 3.1.4.2.56) method call.

hNode: An HNODE_RPC (section 2.2.1.2) context handle that was obtained in a previous ApiOpenNode (section 3.1.4.1.67) method call.

dwFilter: A 32-bit integer bitmask containing one or more node-specific values in a CLUSTER_CHANGE (section 2.2.2.7) enumeration. The value of this parameter MUST be set to the bitwise OR operator of one or more of the following values: CLUSTER_CHANGE_NODE_ADDED, CLUSTER_CHANGE_NODE_DELETED, CLUSTER_CHANGE_NODE_STATE, or CLUSTER_CHANGE_NODE_PROPERTY.

dwNotifyKey: A 32-bit integer context value chosen by the client. This value MUST be returned to the client via a subsequent completion of the ApiGetNotify (section 3.1.4.1.66) method, if the name of the object pertaining to the event  matches the name of the object designated by hNode (the second parameter).

dwStateSequence: The address of a 32-bit integer that the server MUST write upon successful completion of this method. The client MUST retain the most current value of this parameter and provide it back to the server via the StateSequence parameter of the ApiReAddNotifyNode (section 3.1.4.1.63) method.

Return Values: The method MUST return the following error codes for the specified conditions.

Return value/code	Description
0x00000000 ERROR_SUCCESS	Success.
0x00000006 ERROR_INVALID_HANDLE	The data that is pointed to by the hNotify parameter or the hNode parameter does not respectively represent a valid HNOTIFY_RPC (section 2.2.1.6) or HNODE_RPC (section 2.2.1.2) context handle.

For any other condition, this method MUST return a value that is not one of the values listed in the preceding table. The client MUST behave in one consistent, identical manner for all values that are not listed in the preceding table. The client SHOULD treat errors specified in 3.2.4.6 as recoverable errors, and initiate the reconnect procedure as specified in section 3.2.4.6.