* Avoid null endpoint DTO metadata in tests * Enforce console logs hub read permission * Remove unused console logs hub import * Support mapped endpoint metadata in auth tests * Reduce console log capture throughput impact * Address Copilot console logs review * Refactor task scheduling to support tenant-level background work and enhance logging functionality. * Introduce ConsoleStreamHook for stdout/stderr tee and enhance logging validation. Adjust test cases and startup warnings for distributed lock provider usage. * Refactor console logging pipeline with capture optimization and new ConsoleLogsHost; update tests accordingly. * Add Ansi SGR parser for console logs and associated unit tests * Remove ANSI color renderings and parsers; integrate ConsoleLogScopeAccessor for improved logging context with workflow instance ID support. * Address console logs code quality feedback * Address PR review feedback * Preserve console logs extension points * Stabilize console logs host lifecycle * Address final automated review comments * Tighten console log capture shutdown * Address console log review feedback * Address follow-up review feedback * Cover final review feedback * Avoid recursive console provider initialization * Guard console host lease shutdown * Preserve console log scope and provider lifetime * Correlate console log scope fallback * Tighten console scope correlation * Expose host services during provider construction * Redact ANSI-normalized console lines * Add OpenTelemetry diagnostics backend foundation * Add OTLP HTTP ingestion parsing * Document OpenTelemetry diagnostics setup * Enforce OpenTelemetry hub permissions * Remove `ConsoleCaptureTee` and related services and tests * Add OpenTelemetry HTTP ingestion integration test * Use pipeline contributors for console log context * Update CShells package versions to 0.0.24-preview.132 * Add OpenTelemetry ingestion security tests * Add OpenTelemetry API authorization tests * Filter live console logs by workflow instance * Add OpenTelemetry hub tests * Add OpenTelemetry gRPC metadata hook * Assert OpenTelemetry workflow tags survive ingestion * Mark OpenTelemetry core build verified * Enhance console logging with activity execution metadata and extend test coverage. * Address console logs stream consumption comment * Wire OpenTelemetry diagnostics into core sample * Address Core diagnostics review feedback * Address Core Copilot follow-up feedback * Add OpenTelemetry metric instrument names * Address Core Copilot provider feedback * Address Core Copilot diagnostics follow-up * Address Core Copilot live feed feedback * Address Core Copilot store feedback * Integrate OpenTelemetry for logging, tracing, and metrics in ModularServer and update launch settings and docker-compose configuration. * Refactor to replace `ConsoleLogStream.Core` with `ConsoleLogStreaming.Core` across codebase and update `ConsoleStreamHook` installation. * Add diagnostics OpenTelemetry backend * Fix OpenTelemetry live hub subscription * Fix modular OpenTelemetry exporter endpoints * Add CShells logging configuration in appsettings.json * Remove obsolete unit tests and helper classes * Restore default activity exception handling * Simplify type serialization and alias management This commit refactors the internal type serialization and alias management system to reduce boilerplate, improve robustness, and simplify the developer experience: - Removed numerous explicit `ExpressionOptions` type alias registrations across various modules. - Updated `TypeJsonConverter` and polymorphic serialization to reliably handle types using assembly-qualified names when a short alias is not explicitly registered. - Streamlined `ExcludeFromHashConverter` to strictly adhere to `ExcludeFromHashAttribute` for hash calculations, removing complex `JsonIgnoreCondition` logic. - Eliminated several helper classes (`WorkflowJsonTypeResolver`, `WorkflowTypeValidator`, `IWorkflowTypeRegistry`, `WorkflowFactoryDictionary`, `JavaScriptExceptionTypeAliasRegistrar`, `WorkflowRuntimeTypeAliasRegistrar`) and their associated unit tests, simplifying the codebase. Additionally, this commit introduces a comprehensive markdown document (`product-website-feature-source.md`) outlining Elsa's core features, Studio capabilities, extension ecosystem, and architectural selling points, intended as source material for the product website. * Refine type serialization for improved robustness and alias handling This commit further enhances the type serialization and deserialization mechanisms: * Centralizes type resolution and alias management through `IWellKnownTypeRegistry` and `WorkflowJsonTypeResolver`. * Prioritizes registered type aliases when serializing type metadata in `PolymorphicObjectConverter`, resulting in more concise JSON output. * Enhances deserialization in `PolymorphicObjectConverter` and `VariableMapper` to gracefully handle unknown or non-instantiable types, providing fallbacks and logging warnings. * Simplifies `TypeJsonConverter` by delegating complex type resolution logic to the `WorkflowJsonTypeResolver`. * Adds `JsonArray` to the well-known type aliases for direct recognition. * Fix console logs packaging and workflow type resolution * Fix console log metadata and type resolution * Address Copilot review feedback * Enhance type resolution, improve console log handling, and update tests - Streamlined `WorkflowDictionaryExtensions` for better workflow registration validation. - Refined `ConsoleLogsAuthorizationTests` with the new `SetJsonRequest` helper to improve test requests handling. - Updated `OrderDefinition` to ignore JSON serialization for `KeySelector`. - Enhanced `WorkflowRuntimeFeature` for improved workflow registration and type alias configuration. - Added tests to ensure `ConsoleLogProvider` metadata filtration in various scenarios. - Improved type serialization logic in `WorkflowJsonTypeResolver`. - Updated README to fix references related to diagnostics. - Optimized `ExcludeFromHashConverter` for property serialization conditions. - Modified `TriggerIndexer` for streamlined trigger management. - Tested payload checks in `PublishEventTests`. - Adjusted `Endpoint` in `ConsoleLogs` for automatic JSON request handling. - Ensured registration of workflow type aliases in `WorkflowsFeature`. * Restore CLR workflow registration compatibility * Align JSON island serialization fixtures * Add Console Logs Services and Enhance Endpoint Handling - Introduced `ActivityExecutionsEndpointTests` to validate route exposure. - Added `ConsoleLogCaptureHostedService` for console log streaming. - Implemented `ConsoleStreamJsonConverter` for JSON conversion of console streams. - Developed `ElsaConsoleLogRecentBuffer` to handle recent log buffering. - Updated `ConsoleLogsAuthorizationTests` with new test cases for stream filter mapping. - Consolidated console log provider dependencies and registration, including recent buffering. - Enhanced `ElsaConsoleLogProvider` to use recent buffer for filtering. - Adjusted `Program.cs` for streamlined logging service setup. * Enhance type resolution and test coverage; streamline console log integration - Added `ConsoleStreamHook` for streamlined log streaming. - Updated `WorkflowJsonTypeResolverTests` to improve type resolution and test new scenarios. - Simplified type resolution by removing trusted assembly checks. * Fix CI smoke and package restore failures * Fix Docker smoke image project paths * Fix Docker Python runtime packages * Fix Docker CA smoke teardown * Refresh Elsa roadmap * Implement background processors and mediation coordination - Added `BackgroundCommandProcessor`, `BackgroundJobProcessor`, and `BackgroundNotificationProcessor` classes for handling commands, jobs, and notifications, respectively. - Introduced `MediatorBackgroundProcessingCoordinator` to coordinate the execution of all background processors. - Implemented `MediatorBackgroundTask` for wrapping `MediatorBackgroundProcessingCoordinator` in `BackgroundTask`. - Added unit tests for `MediatorBackgroundTask` to ensure proper start and stop behavior. - Refactored `BackgroundCommandSenderHostedService` to utilize `BackgroundCommandProcessor`. - Introduced 'elsa-roadmap-refresh' skill configuration for roadmap updates. * Address workflow type resolution review feedback * Address follow-up review feedback * Restore recent console logs execute path * Address Copilot follow-up review * Decouple workflow JSON aliases from expressions * Fix workflow management unit test setup * Fix console logs recent endpoint handler shape * Respect workflow JSON strict type aliases * Remove unused console log contracts reference * Address Copilot review feedback * Address Copilot follow-up comments * Synchronize ring buffer dropped count * Address background processor strategy replay
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Data Model: Diagnostics OpenTelemetry
Telemetry Resource
| Field | Notes |
|---|---|
ResourceKey |
Stable key derived from service name, instance ID, and resource attributes. |
ServiceName |
From service.name or OTEL_SERVICE_NAME; fallback is unknown_service. |
ServiceInstanceId |
From service.instance.id when present. |
ServiceVersion |
From service.version when present. |
DeploymentEnvironment |
From deployment.environment when present. |
Attributes |
Redacted resource attributes. |
FirstSeen, LastSeen |
Backend receive timestamps. |
Status |
Active, stale, or disconnected. |
Telemetry Trace
| Field | Notes |
|---|---|
TraceId |
Required trace identifier. |
RootSpanId |
Root span when known. |
Name |
Root span name or synthesized trace label. |
ResourceKeys |
Participating resources. |
StartTime, EndTime, Duration |
Derived from spans. |
Status |
Ok, error, unset, or mixed. |
SpanCount, ErrorCount |
Derived counters. |
WorkflowInstanceId, WorkflowDefinitionId |
Elsa span attributes when present. |
LastReceivedAt |
Backend receive timestamp. |
Telemetry Span
| Field | Notes |
|---|---|
TraceId, SpanId, ParentSpanId |
Trace hierarchy. |
ResourceKey |
Emitting resource. |
Name, Kind |
OTEL span metadata. |
StartTime, EndTime, Duration |
Timing. |
StatusCode, StatusDescription |
OTEL status. |
Attributes |
Redacted span attributes. |
Events |
Redacted events. |
Links |
Span links. |
Workflow*, Activity*, TenantId, CorrelationId |
Existing Elsa.Workflows semantic attributes when present: workflow.*, workflow.activity.*, and elsa.tenant.id. |
ReceivedAt |
Backend receive timestamp. |
Metric Instrument and Point
| Field | Notes |
|---|---|
Name, Description, Unit, Type |
Instrument metadata. |
ResourceKey |
Emitting resource. |
Series |
Bounded collection by attribute set. |
Timestamp, StartTimestamp |
Point timestamps. |
Attributes |
Redacted point attributes. |
Value |
Sum/gauge value. |
Count, Sum, Min, Max, Buckets |
Histogram fields when present. |
Temporality |
Cumulative or delta. |
DroppedPointCount |
Capacity drop count. |
OTLP Log Record
| Field | Notes |
|---|---|
Id |
Backend assigned ID. |
Timestamp, ObservedTimestamp, ReceivedAt |
OTLP and backend timing. |
ResourceKey |
Emitting resource. |
SeverityText, SeverityNumber |
OTEL severity. |
Body |
Redacted body. |
TraceId, SpanId |
Correlation fields. |
Attributes |
Redacted log attributes. |
Collector Configuration
| Field | Notes |
|---|---|
HttpEndpoint |
Base endpoint suitable for OTEL_EXPORTER_OTLP_ENDPOINT with HTTP/protobuf. |
GrpcEndpoint |
Endpoint suitable for gRPC when enabled; null when unavailable. |
GrpcEnabled |
Whether gRPC ingestion is enabled. |
GrpcDisabledReason |
Optional non-secret explanation when disabled. |
RequiredHeaders |
Required ingestion header names without secret values. |
RecommendedEnvironment |
Copyable non-secret OTEL environment variable values. |
IsLoopbackOnly |
Whether ingestion is restricted to loopback. |
RequiresApiKey |
Whether configured ingestion protection is required for advertised endpoints. |
Storage Diagnostics
| Field | Notes |
|---|---|
DroppedSpanCount |
Spans dropped by store capacity. |
DroppedMetricPointCount |
Metric points dropped by capacity. |
DroppedLogRecordCount |
OTLP logs dropped by capacity. |
DroppedLiveUpdateCount |
Live updates dropped by subscriber capacity. |
ResourceCount, TraceCount, MetricSeriesCount |
Current counts. |
Storage Capacity Policy
| Field | Notes |
|---|---|
MaxResources |
Default at least 500. |
MaxTraces |
Default at least 2,000. |
MaxSpans |
Default at least 10,000. |
MaxMetricPoints |
Default at least 20,000 across all metric series. |
MaxLogRecords |
Default at least 10,000. |
MaxLiveUpdatesPerSubscriber |
Default at least 1,000 queued updates per SignalR subscriber. |
OverflowPolicy |
Drop oldest item in the signal-specific buffer and increment the matching dropped counter. |