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# Conflicts: # BootstrapBlazor.Extensions.sln # src/extensions/BootstrapBlazor.OpcDa/BootstrapBlazor.OpcDa.csproj # test/UnitTestOpcUa/UnitTestOpcUa.csproj
Reviewer's GuideIntroduces a multi-target OPC UA client extension with scoped DI registration, asynchronous session/read/write/browse APIs, configurable security and identities, monitored subscriptions, serialized lifecycle management, deterministic cleanup, and isolated automated coverage; the package is relocated to extensions and versioned 10.0.1. Sequence diagram for OPC UA connection and operationssequenceDiagram
participant Consumer
participant IOpcUaServer
participant OpcUaServer
participant OpcUaSdk
Consumer->>IOpcUaServer: ConnectAsync(endpointUrl, options, cancellationToken)
IOpcUaServer->>OpcUaServer: ConnectAsync(endpointUrl, options, cancellationToken)
OpcUaServer->>OpcUaSdk: SelectEndpointAsync(...)
OpcUaServer->>OpcUaSdk: CreateAsync(...)
OpcUaSdk-->>OpcUaServer: Connected session
OpcUaServer-->>Consumer: true
Consumer->>IOpcUaServer: ReadAsync(nodeIds, cancellationToken)
IOpcUaServer->>OpcUaServer: ReadAsync(nodeIds, cancellationToken)
OpcUaServer->>OpcUaSdk: ReadAsync(...)
OpcUaSdk-->>OpcUaServer: Read results
OpcUaServer-->>Consumer: IReadOnlyList<OpcUaReadItem>
Consumer->>IOpcUaServer: WriteAsync(items, cancellationToken)
IOpcUaServer->>OpcUaServer: WriteAsync(items, cancellationToken)
OpcUaServer->>OpcUaSdk: WriteAsync(...)
OpcUaSdk-->>OpcUaServer: Status codes
OpcUaServer-->>Consumer: IReadOnlyList<OpcUaWriteItem>
Sequence diagram for monitored OPC UA subscriptionsequenceDiagram
participant Consumer
participant IOpcUaServer
participant OpcUaServer
participant IOpcUaSubscription
participant OpcUaSdk
Consumer->>IOpcUaServer: CreateSubscriptionAsync(name, publishingInterval, active, cancellationToken)
IOpcUaServer->>OpcUaServer: CreateSubscriptionAsync(name, publishingInterval, active, cancellationToken)
OpcUaServer->>OpcUaSdk: CreateAsync(cancellationToken)
OpcUaSdk-->>OpcUaServer: Created subscription
OpcUaServer-->>Consumer: IOpcUaSubscription
Consumer->>IOpcUaSubscription: AddItemsAsync(nodeIds, samplingInterval, cancellationToken)
IOpcUaSubscription->>OpcUaSdk: ApplyChangesAsync(cancellationToken)
OpcUaSdk-->>IOpcUaSubscription: Monitored items active
OpcUaSdk-->>IOpcUaSubscription: Notification
IOpcUaSubscription->>IOpcUaSubscription: DataChanged(results)
IOpcUaSubscription-->>Consumer: Action<IReadOnlyList<OpcUaReadItem>>
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Link issues
fixes #1117
Summary By Copilot
IOpcUaServerRegression?
Risk
This introduces a new stateful network client and certificate configuration surface. The implementation uses scoped ownership, explicit cancellation, serialized session operations, and deterministic cleanup to limit lifecycle risk.
Verification
dotnet test test\UnitTestOpcUa\UnitTestOpcUa.csproj -f net10.0 --no-restore --nologo --verbosity:minimalpassed all 5 tests.Packaging changes reviewed?
☑️ Self Check before Merge
Summary by Sourcery
Implement a production-ready OPC UA client extension with configurable connectivity, data access, browsing, and monitored subscriptions.
New Features:
Enhancements:
Build:
Tests: