SDK .NET Files

Breaking Changes

:boom: Outbound Workflow Interceptor Nexus Operation Types and Methods Renamed

• On WorkflowOutboundInterceptor type, StartNexusOperationAsync method renamed to ScheduleNexusOperationAsync
• StartNexusOperationInput type renamed to ScheduleNexusOperationInput

Highlights

Standalone Nexus Operations (Experimental)

Added support for Standalone Nexus Operations, allowing clients to start and manage Nexus operations directly outside of a Workflow. Documentation, Samples, and instructions to request enablement in Temporal Cloud will be linked here when available.

Standalone Nexus Operations is experimental and currently only supported on pre-release versions of the dev server.

:warning: Possible Local Activity Behavioral Difference

This release includes a bugfix in the Core library that changes incorrect behavior that may have unintentionally worked previously. Specifically, local activities that start running, and continue running while their associated workflow was evicted from the cache, could possibly be "re-attached" to the workflow if it was recreated before they finished. This behavior was unsound. Now, any running local activities are invalidated when a workflow is evicted. This change was really only likely to be encountered if you were running with the workflow cache disabled, which we never recommend doing.

What's Changed

• Fix NexusWorkerTests to not capture OperationStartContext by @jmaeagle99 in https://github.com/temporalio/sdk-dotnet/pull/697
• CI: Fix Rust cache by @maciejdudko in https://github.com/temporalio/sdk-dotnet/pull/695
• chore: ignore lscache files by @jmaeagle99 in https://github.com/temporalio/sdk-dotnet/pull/699
• fix(worker): allow Nexus-only workers by @jmaeagle99 in https://github.com/temporalio/sdk-dotnet/pull/698
• 💥 Add support for Stand Alone Nexus Operations by @Quinn-With-Two-Ns in https://github.com/temporalio/sdk-dotnet/pull/639
• Bump slackapi/slack-github-action from 3.0.1 to 3.0.3 by @dependabot[bot] in https://github.com/temporalio/sdk-dotnet/pull/685
• chore: enable public API compat validation by @jmaeagle99 in https://github.com/temporalio/sdk-dotnet/pull/680
• chore(nightly): update aws-actions/configure-aws-credentials to latest release by @jmaeagle99 in https://github.com/temporalio/sdk-dotnet/pull/701
• fix(tests): wait for routing config propagation in worker deployment ramp test by @jmaeagle99 in https://github.com/temporalio/sdk-dotnet/pull/705
• Add standalone activity start delay support by @eamsden in https://github.com/temporalio/sdk-dotnet/pull/691
• build: add SimpleBench project to solution by @jmaeagle99 in https://github.com/temporalio/sdk-dotnet/pull/679
• remove stale nightly tps omes test by @THardy98 in https://github.com/temporalio/sdk-dotnet/pull/707
• Nexus - Fix null operation input handling in workflow by @Quinn-With-Two-Ns in https://github.com/temporalio/sdk-dotnet/pull/714
• test: enable draining worker pollers on shutdown by @jmaeagle99 in https://github.com/temporalio/sdk-dotnet/pull/715
• feat(otel): add otel tracing for standalone activities. by @cconstable in https://github.com/temporalio/sdk-dotnet/pull/647
• remove dead omes job by @THardy98 in https://github.com/temporalio/sdk-dotnet/pull/718
• chore: update System.CommandLine to 2.0.8 by @jmaeagle99 in https://github.com/temporalio/sdk-dotnet/pull/716
• Make README.md more specific about which AWS Lambda images cause CA by @eamsden in https://github.com/temporalio/sdk-dotnet/pull/720
• Generic Temporal Nexus Operation Handler by @Quinn-With-Two-Ns in https://github.com/temporalio/sdk-dotnet/pull/690
• chore: update sdk-core submodule by @jmaeagle99 in https://github.com/temporalio/sdk-dotnet/pull/722
• chore: update version to 1.15.0 by @jmaeagle99 in https://github.com/temporalio/sdk-dotnet/pull/723

SDK Core Update

Updated from https://github.com/temporalio/sdk-rust/commit/a0ad8769d99a4432594d102efebb527d4bf5328f to https://github.com/temporalio/sdk-rust/commit/6a8355ac4c49884433b0502f31bddace0c6ce884

• Enforce minimum DNS resolution interval in https://github.com/temporalio/sdk-core/pull/1272
• Upgrade cloud-api to v0.15.0 in https://github.com/temporalio/sdk-core/pull/1253
• Make TLS backend feature-selectable in sdk-core and client in https://github.com/temporalio/sdk-core/pull/1274
• VLN-1346: fix missing-dependency-cooldown in https://github.com/temporalio/sdk-core/pull/1275
• fix(sdk): no longer error on cancelling fired timer in https://github.com/temporalio/sdk-core/pull/1268
• fix: retry transport-sourced Cancelled errors and count them in metrics in https://github.com/temporalio/sdk-core/pull/1269
• (CI) Disable caching cargo binaries in https://github.com/temporalio/sdk-core/pull/1278
• refactor(examples): extract saga compensation into a reusable Saga pattern in https://github.com/temporalio/sdk-core/pull/1279
• build(deps): update ringbuf requirement from 0.4 to 0.5 in https://github.com/temporalio/sdk-core/pull/1285
• build(deps): update lru requirement from 0.16 to 0.18 in https://github.com/temporalio/sdk-core/pull/1276
• Update README & add banner in https://github.com/temporalio/sdk-core/pull/1280
• Add activity execution interceptors in https://github.com/temporalio/sdk-core/pull/1277
• Add uds support in channel creation in https://github.com/temporalio/sdk-core/pull/1288
• chore(sdk): rename child_workflow -> start_child_workflow in https://github.com/temporalio/sdk-core/pull/1263
• :boom: WASM Workflows in https://github.com/temporalio/sdk-core/pull/1239
• feat(client): support custom ServerCertVerifier in TlsOptions in https://github.com/temporalio/sdk-core/pull/1271
• fix(shutdown): increase shutdown timeout in https://github.com/temporalio/sdk-core/pull/1290
• docs: update sdk arch docs to include nexus. in https://github.com/temporalio/sdk-core/pull/1258
• Upgrade cloud-api to v0.16.0 in https://github.com/temporalio/sdk-core/pull/1295
• fix(sdk): no longer treat unrecognized activity as worker fatal error in https://github.com/temporalio/sdk-core/pull/1296
• Add activity cancels from nexus in https://github.com/temporalio/sdk-core/pull/1160
• fix(metrics): emit workflow_type attribute on temporal_workflow_task_execution_failed in https://github.com/temporalio/sdk-core/pull/1301
• Caret-bump tonic and related packages to 0.14.6 in https://github.com/temporalio/sdk-core/pull/1303
• Fix start-to-close timeout failure caused by short heatbeat timeout in https://github.com/temporalio/sdk-core/pull/1300
• :boom: Fix possible panic due to LA completing after an eviction in https://github.com/temporalio/sdk-core/pull/1304

New Contributors

• @eamsden made their first contribution in https://github.com/temporalio/sdk-dotnet/pull/691

Full Changelog: https://github.com/temporalio/sdk-dotnet/compare/1.14.1...1.15.0