Struct HistoryRead 

pub struct HistoryRead { /* private fields */ }

Reads historical values or events of one or more nodes. The caller is expected to provide a HistoryReadAction enum which must be one of the following:

• ReadEventDetails
• ReadRawModifiedDetails
• ReadProcessedDetails
• ReadAtTimeDetails

See OPC UA Part 4 - Services 5.10.3 for complete description of the service and error responses.

Implementations

impl HistoryRead

pub fn diagnostics(self, bits: DiagnosticBits) -> Self

Set requested diagnostic bits.

pub fn timeout(self, timeout: Duration) -> Self

Set the timeout for this request. Defaults to session timeout.

pub fn audit_entry_id(self, entry: impl Into<UAString>) -> Self

Set the audit entry ID for the request.

pub fn header(&self) -> &RequestHeader

Get the request header.

impl HistoryRead

pub fn new(details: HistoryReadAction, session: &Session) -> Self

Create a new HistoryRead request.

pub fn new_manual( details: HistoryReadAction, session_id: u32, timeout: Duration, auth_token: NodeId, request_handle: IntegerId, ) -> Self

Construct a new call to the HistoryRead service, setting header parameters manually.

pub fn timestamps_to_return(self, timestamps: TimestampsToReturn) -> Self

Set timestamps to return.

pub fn release_continuation_points( self, release_continuation_points: bool, ) -> Self

Set release continuation points. Default is false, if this is true, continuation points will be freed and the request will return without reading any history.

pub fn nodes_to_read(self, nodes_to_read: Vec<HistoryReadValueId>) -> Self

Set nodes to read, overwriting any that were set previously.

pub fn node(self, node: HistoryReadValueId) -> Self

Add a node to read.

Trait Implementations

impl Clone for HistoryRead

fn clone(&self) -> HistoryRead

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for HistoryRead

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl UARequest for HistoryRead

type Out = HistoryReadResponse

Response message type.

async fn send<'b>( self, channel: &'b AsyncSecureChannel, ) -> Result<Self::Out, StatusCode>

where Self: 'b,

Send the message and wait for a response.