chore(repo): drive all build warnings to zero (1,114 -> 0) + TreatWarningsAsErrors gate#164
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… gate
Extend the libraries/Directory.Build.props CS1591-as-error policy to
the three other top-level project trees:
- agent/Directory.Build.props (every agent host + module)
- adapter/Directory.Build.props (every adapter host + module)
- build/Directory.Build.props (SysML importer, release builder,
docs generator)
After this commit, every production project plus every contributor
tooling project enforces 100% public-surface XML-doc coverage at
build time. The previous gate covered libraries/* only; the rest of
the codebase only had GenerateDocumentationFile=true, which surfaced
missing comments as warnings the build never failed on.
The dotnet build of MTConnect.NET.sln in Debug --no-incremental
emits 0 errors and 0 CS1591 warnings under this gate, so the
elevation does not break the build.
The TreatWarningsAsErrors=true flip-to-error gate envisioned by TrakHound#164
is a superset of this CS1591 gate; once TrakHound#164 lands repo-wide every
warning becomes an error, but the CS1591 coverage gate is already
maintained independently here so a future regression on the doc
surface fails CI even before TrakHound#164 merges.
…S0436 The DeviceFinder library ships a small vendored IPNetwork helper (parses CIDR strings, enumerates address ranges, etc.) under namespace System.Net. Since .NET 8 ships System.Net.IPNetwork in the BCL, every reference to the vendored type compiles with CS0436 - "type IPNetwork in this assembly conflicts with the imported type IPNetwork in System.Net.Primitives". That accounts for 452 of the 1,122 baseline warnings. The vendored type is internal and only consumed inside the DeviceFinder project, so the fix is structural: move all four files (IPNetwork, IPNetworkCollection, IPAddressCollection, BigIntegerExt) from namespace System.Net to namespace MTConnect.DeviceFinder. With the namespace move, code that wrote Sockets.AddressFamily.* (relying on the old enclosing namespace to resolve System.Net.Sockets) gets rewritten to AddressFamily.* with an explicit using System.Net.Sockets;. No public API change: the type stays internal; the only call site (MTConnectDeviceFinder.cs) is already in MTConnect.DeviceFinder.
The SysML library uses '?'-suffixed reference-type annotations throughout (e.g. 'string? Description' on the XMI model types). Without 'Nullable=annotations' enabled at the project level, every annotation emits CS8632 - 'the annotation for nullable reference types should only be used in code within a #nullable annotations context'. That accounts for all 220 CS8632 in the solution. The narrowest fix is to flip 'Nullable=annotations' (not 'enable') so the '?' annotations have meaning but the compiler does not start flow-analysing for new CS86xx null warnings - keeping this PR scoped to warning-cleanup rather than wholesale null-safety review.
…ations MTConnect.NET-SysML-Import is the build-time code generator that reads the MTConnect SysML XMI and renders the C#/XML/JSON-cppagent emitters. It has 'Nullable=enable' (full flow analysis) but its model classes are internal scaffolding for the template rendering pass - they return 'string' from getters that can legitimately be null when the source XMI node is unparented, return 'null' from static 'Create' factories on bad input, and lazy-initialise reference-typed properties in 'OnDeserialize'- style flows. That produces 132 nullable-flow warnings without exposing real defects: CS8603 (78), CS8618 (40), CS8625 (10), CS8604 (2), CS8600 (2). The right scope-matching fix is to downgrade the project to 'Nullable=annotations', matching the policy already in place on MTConnect.NET-SysML (the runtime XMI library this project consumes). The '?' annotations on existing types remain meaningful for IDE tooling, but the compiler no longer flow-analyses for the CS86xx family - reserving that work for the runtime libraries where flow analysis would catch user-facing bugs.
…urface
MQTTnet 4.3 deprecated two API families this codebase used in 68
places:
1) MqttApplicationMessage.Payload (byte[]) -> PayloadSegment
(ArraySegment<byte>?). 36 sites read message.Payload as a byte[];
one site checked message.Payload != null. The replacement is a
single-purpose internal extension class MqttApplicationMessageExtensions
with GetPayload() (returns byte[] from the segment, allocating a
copy only when the segment is sliced) and HasPayload() (segment
count > 0). Migrating to these helpers keeps every consumer
(Stream/Encoding/Deserialize) one-liner-compatible with the old
API while routing through the supported member.
2) MqttClientOptionsBuilder.WithTls(MqttClientOptionsBuilderTlsParameters)
plus the parameterless WithTls() -> WithTlsOptions(Action<MqttClientTlsOptionsBuilder>).
The 32 sites across 4 files (MTConnectMqttRelay, MTConnectMqttExpandedClient,
adapter/Modules/.../MqttAdapter, agent/Modules/.../MqttAdapter) now
build the TLS options through the dedicated builder
(.WithSslProtocols, .WithIgnoreCertificateRevocationErrors,
.WithIgnoreCertificateChainErrors, .WithAllowUntrustedCertificates,
.WithClientCertificates). The empty-lambda .WithTlsOptions(b => { })
replaces the parameterless WithTls() for the credentialled-TLS path.
The Certificates property of the obsolete TlsParameters type is
replaced by WithClientCertificates(IEnumerable<X509Certificate2>) on
the new builder, which routes through ClientCertificatesProvider
internally - no behaviour change.
Clears all 68 CS0618 warnings in the solution.
…ides
Resolves the hand-written CS0108 'hides inherited member' warnings:
* libraries/MTConnect.NET-XML/Assets/.../Xml*Asset.cs (6 files,
WriteXml(XmlWriter, IAsset)) - all derived helpers redeclare the
base XmlAsset.WriteXml static; mark as 'new'.
* libraries/MTConnect.NET-XML/Assets/XmlUnknownAsset.cs - FromXml
string overload redeclares base XmlAsset.FromXml; mark as 'new'.
* libraries/MTConnect.NET-Common/Devices/IComponent.cs - the
'string Type { get; }' member redeclares IContainer.Type; mark
as 'new'.
* libraries/MTConnect.NET-Common/Devices/IDevice.cs - the
'string Type { get; }' member redeclares IComponent.Type;
mark as 'new'.
* libraries/MTConnect.NET-Common/Assets/Files/FileAsset.cs - the
'TypeId' const redeclares AbstractFileAsset.TypeId; mark as
'new'.
* libraries/MTConnect.NET-Common/Buffers/MTConnectObservationFileBuffer.cs -
Dispose() redeclares the non-virtual base; mark as 'new'.
* build/MTConnect.NET-SysML-Import/CSharp/InterfaceDataItemType.cs -
RenderInterface()/RenderDescriptions() redeclare the non-virtual
base DataItemType methods; mark as 'new'.
* libraries/MTConnect.NET-SysML/Models/Devices/MTConnectInterfaceDataItemType.cs -
static Parse() with the override-style signature on
MTConnectDataItemType; mark as 'new'.
The remaining 10 CS0108 cases sit in '.g.cs' files generated from
the SysML XMI by the importer. Per CONVENTIONS sec15c, '.g.cs' files
must not be hand-edited - the fix has to land in the importer's
Scriban template (so the regen output carries 'new' on properties
that hide a parent-interface member). That work is queued for a
follow-up PR after the mtconnect_sysml_model submodule lands
(currently in flight as PR TrakHound#162) so the regen can be reproduced
deterministically in CI.
17 public events across MTConnect.NET-Common, MTConnect.NET-DeviceFinder, MTConnect.NET-HTTP, MTConnect.NET-MQTT, and MTConnect.NET-SHDR are declared but never raised from inside the assembly: DataSent / SendError on MTConnectAdapter, AssetReceived on MTConnectAgent, ProbeError on MTConnectDeviceFinder, ServerLogRecevied on MTConnectHttpServer, MessageSent / PublishError on MTConnectMqttBroker, MTConnectError / Connected / Disconnected / ConnectionStatusChanged on MTConnectMqttClient, Connected / Disconnected on MTConnectMqttExpandedClient, MessageSent on MTConnectMqttRelay, DataSent / AgentConnectionError on ShdrAdapter, and CommandReceived on ShdrClient. These are part of the published public API surface - downstream agent modules and adapter implementations subscribe to them, and the contract allows subclasses to raise them. Removing the declarations would be a breaking ABI change. Wrap each declaration with #pragma warning disable / restore CS0067 and an explanatory comment. That clears all 34 CS0067 warnings without altering the public surface.
CS1998 fires when a method carries the async modifier but contains no
await expression. The async modifier is load-bearing for callers that
expect Task-wrapped exception semantics, so the right fix per site is
to keep async and add an 'await Task.CompletedTask;' as the first
statement. That preserves the async state-machine envelope (exceptions
captured on the Task, not thrown synchronously) without changing
observable behaviour.
Sites touched:
* libraries/MTConnect.NET-Common/Configurations/DeviceConfiguration.cs
* libraries/MTConnect.NET-MQTT/MTConnectMqttBroker.cs (3 sites)
* libraries/MTConnect.NET-SHDR/Shdr/ShdrClient.cs
* libraries/MTConnect.NET-HTTP/Servers/MTConnect*ResponseHandler.cs
(Asset / Assets / Current / Probe / Static / Http base)
* build/MTConnect.NET.Builder/Parts/{agent/installer,libraries,
agent/docker} entry points
Also reflowed MTConnectHttpResponseHandler.OnRequestReceived from its
one-liner shape ('{ return new MTConnectHttpResponse(); }') to a
braced body so the awaited completion point + return live on their
own lines.
…portedOSPlatform CA1416 (platform-specific API call from a multi-platform call site) was firing on: * libraries/MTConnect.NET-Services/MTConnectAgentService.cs and MTConnectAdapterService.cs - both subclass System.ServiceProcess. ServiceBase, whose OnStart/OnStop overrides are [SupportedOSPlatform( 'windows')] on net8.0. Annotate the class so the override site no longer trips CA1416. * libraries/MTConnect.NET-Services/WindowsService.cs - the entire class is Windows-only (ServiceController, WindowsIdentity, WindowsPrincipal). * libraries/MTConnect.NET-HTTP/Ceen/Httpd/HttpServer.cs - the Socket(SocketInformation) ctor is Windows-only (it duplicates a socket handle). Annotate the RunClient(SocketInformation, ...) overload and its sole caller HandleRequest(SocketInformation, ...). After annotating the base service classes, the call sites in agent/MTConnect.NET-Applications-Agents/Service.cs and adapter/MTConnect.NET-Applications-Adapter/Service.cs propagated CA1416 through their derivation; annotate those derived 'Service' classes with the same attribute. Clears all 24 CA1416 warnings without changing runtime behaviour - the APIs were already gated by WindowsService.IsCompatible() / RuntimeInfo checks at the call sites.
Eight 'catch (Exception ex) { }' blocks across DeviceFinder, HTTP, and
MQTT do not reference the captured exception. Replace with the
identifier-less 'catch (Exception)' form so CS0168 (variable declared
but never used) clears without changing the catch semantics.
Files touched: MTConnectDeviceFinder.cs, MTConnectHttpProbeClient.cs,
MTConnectHttpResponseHandler.cs (two sites),
MTConnectMqttBroker.cs, MTConnectMqttDocumentServer.cs (two sites),
MTConnectMqttRelay.cs.
Catch-all sweep that resolves the remaining low-volume warning families the campaign turned up: * CS0649 (3): MTConnectMqttClient._connectionStatus had no in-assembly assignment; initialise it to Disconnected (its semantic default). Ceen ServerConfig.DebugLogHandler / LoaderContext are public-API configuration hooks assigned by consumers, so wrap them with '#pragma warning disable CS0649' and an explanatory comment. * CS0219 (2): drop unused local 'nextRevision' in build/.../AppVersion.cs and unused 'j' in adapter/.../DataSource.cs. * SYSLIB0050 (1): wrap Type.IsSerializable lookup in AppDomainTask.cs with a scoped pragma - it gates a legacy AppDomain marshalling fallback that no longer fires on .NET 5+. * SYSLIB0014 (1): wrap System.Net.WebRequest.CreateHttp() in the vendored Ceen SimpleProxyHandler with a scoped pragma; the HttpClient migration is a separate piece of work. * CS8602 (1): bang-postfix the post-assert dereference in tests/.../SampleStream.cs (NUnit's 'Is.Not.Null' assert does not null-narrow for the flow analyser). * CS8600 (1): annotate the locally-declared 'ISampleValueObservation? observation' in JsonSampleValueToObservationTests.cs so the null literal is in scope of the nullable annotation. * CS4014 (1): discard the fire-and-forget Task with '_ =' on the Ceen HttpServer.HandleRequest(Stream, ...) call site. * CS0672 (1): the AppDomainBridge override of MarshalByRefObject.InitializeLifetimeService still ships on the Ceen legacy class; annotate the override with [Obsolete(...)] to match the base. * CS0169 (1): remove the dead '_clientInformationTimer' field in the HttpAdapter module - its only references are in commented-out code.
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The C# class / interface templates render a property whose Name
matches an inherited member without a 'new' modifier, so every
regenerated child class that redeclares a parent property warns
with CS0108 ('hides inherited member; use the new keyword if
hiding was intended'). The InterfaceDataItemType template
symmetrically emits 'new static GetSubTypeId(SubTypes)' even when
the parameter type is the child's local 'SubTypes' enum, which
differs from the parent's enum type, producing the dual CS0109
('does not hide an accessible member').
Per CONVENTIONS sec15c the fix has to land in the templates +
renderer, not in the regenerated '.g.cs'. The renderer now does
an inheritance pass after templates are assembled:
* MTConnectPropertyModel grows two flags: 'IsInherited' (class
side) and 'IsInheritedInInterface' (interface side). Most
inheritance picks up the same flag on both sides, but Composition
(hand-written 'IComposition.cs' partial extends 'IContainer'
but 'Composition.cs' does not extend 'Container') and
ToolingMeasurement (hand-written 'IMeasurement.g.cs' comments
out 'Code') need one-sided flags to avoid swapping CS0108 for
CS0109.
* TemplateRenderer.MarkInheritedProperties walks each export-side
ClassModel's 'ParentName' chain through both the export-side
templates and the import-side classModels (so abstract parents
whose '.g.cs' is hand-maintained and never re-emitted, e.g.
'Assets.CuttingTools.Measurement', are still discoverable). The
resolver prefers a sibling-namespace match before falling back
to Name, so 'Pallet.Measurement' and 'CuttingTools.Measurement'
do not collide on the bare 'Measurement' lookup.
* Hand-stitched seeds cover three inheritance links the SysML
model does not express: 'IContainer : IMTConnectEntity'
contributes 'Uuid', 'IComposition : IContainer' contributes
'Type' (interface only), 'EventDataSetObservation' transitively
extends the hand-written 'Observation' (class only — every
DataSetResult property whose name appears in Observation's
property set picks up the flag), and ToolingMeasurement -> the
frozen 'Measurement.g.cs' base contributes 'Code' (class only).
* Model.scriban + Interface.scriban + Observations.DataSetResults
.scriban emit a 'new ' prefix when their respective flag is set.
The InterfaceDataItemType template loses its blanket 'new'
qualifier on 'GetSubTypeId(SubTypes)' — the param type always
differs from the base when 'sub_types > 0', so emitting 'new'
always tripped CS0109. The string-parameter
'GetSubTypeDescription' overload keeps 'new' because its param
type does match the base.
The renderer's existing 'IComposition : IContainer'-aware property
filter (ExportToInterface = false on shared names) keeps doing its
job — the inheritance pass only marks members that survive that
filter.
Regenerated from mtconnect_sysml_model v2.7 (SHA 25796ac5) with the
template + renderer changes from the previous commit. The diff is
the minimal 'new ' insertions / removals predicted by the fix:
* 10 'new' insertions clearing CS0108 'hides inherited member':
- Assets/CuttingTools: CuttingToolAsset.SerialNumber,
CuttingToolArchetypeAsset.SerialNumber,
ICuttingToolAsset.SerialNumber,
ICuttingToolArchetypeAsset.SerialNumber,
ToolingMeasurement.Code.
- Assets/RawMaterials: RawMaterialAsset.SerialNumber,
IRawMaterialAsset.SerialNumber.
- Devices: IComposition.Type, IContainer.Uuid.
- Observations/Events: MaintenanceListResult.Name.
* 10 'new' removals clearing CS0109 'does not hide an accessible
member' on the Interface DataItem family's
'GetSubTypeId(SubTypes)' static method — the child's SubTypes
enum is a distinct type from the parent's, so the overload's
parameter type differs and C# treats it as a non-hiding method.
Affected files: CloseChuckDataItem, CloseDoorDataItem,
MaterialChangeDataItem, MaterialFeedDataItem,
MaterialLoadDataItem, MaterialRetractDataItem,
MaterialUnloadDataItem, OpenChuckDataItem, OpenDoorDataItem,
PartChangeDataItem.
Regen reproducibility: pinning the same XMI SHA and re-running the
importer produces byte-identical output (the importer's
determinism guarantee — see build/MTConnect.NET-SysML-Import/README
.md sec 'Determinism guarantee').
xUnit1030 ('Test methods should not call ConfigureAwait(false)') fired
on 8 awaits inside two [Fact] methods of MqttRelayWorkflowTests
(Agent_publishes_observation_consumer_receives_same_payload and
Consumer_disconnects_mid_publish_agent_does_not_lose_observations).
xUnit's analyzer tracks the sync context to enforce per-test
parallelisation + timeout limits; awaiting with ConfigureAwait(false)
walks out of that context and silently breaks both.
Stripped the modifier on every await inside the [Fact] bodies and
left a note on each method explaining why. Awaits inside the
non-test helper 'ConnectSubscriberAsync()' (and elsewhere) keep
their ConfigureAwait(false) — that lint is test-method-scoped.
The campaign has driven every Debug warning to zero. Lock the
floor: a TreatWarningsAsErrors=true gate in the root
Directory.Build.props escalates any future reintroduction to a
hard compile error, in CI as well as locally. The campaign's
per-warning rationale stays the unit of revert — touching the
gate is not required to bring back a specific warning if a
follow-up change has to relax one.
Pairs with a worktree-only SourceLink gate. SourceLink.GitHub
emits an un-coded warning ('Source control information is not
available - the generated source link is empty.') whenever it
sees a git worktree ('.git' is a file pointing at the parent
gitdir, not a directory) or a non-github.com remote alias. CI
checks out with a plain clone from github.com — those builds
never trip it, and the EnableSourceLink Condition leaves
SourceLink active there. Local worktree builds skip it so
TreatWarningsAsErrors does not escalate the un-suppressable
warning to a build failure. The CI side of the condition is
double-belted: GITHUB_ACTIONS=true is also a hard precondition
for disabling the gate.
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Drives the no-incremental Debug build's warning count from 1,122 down to 64 across every code family the campaign turned up. The 64 residual warnings split cleanly into two follow-up channels, neither of which fits this PR's scope:
NU190x(NuGet vulnerability advisories) — folded into the deps-bump PR build(repo): bump Scriban + test-infra packages #149 as natural scope..g.cs-residentCS0108/CS0109— these live in importer-generated files. Per CONVENTIONS sec15c they must not be hand-edited; the fix is a template change + regen against the SysML XMI. That regen has to wait until PR chore(build): add mtconnect_sysml_model as a submodule #162 (themtconnect_sysml_modelsubmodule) lands so CI can reproduce the regen deterministically. Tracked for a follow-up regen PR once chore(build): add mtconnect_sysml_model as a submodule #162 is merged.Baseline (2026-05-22)
IPNetworkcollision with the .NET 8System.Net.IPNetwork)?annotation outside#nullablecontextnewawaitnewkeyword unnecessaryType.IsSerializableobsoleteWebRequest.CreateHttpobsoletePer-family commits (in merge order)
IPNetworkBCL collision)IPNetworkout ofnamespace System.NetintoMTConnect.DeviceFinder<Nullable>annotations</Nullable>onMTConnect.NET-SysML.csprojMTConnect.NET-SysML-Import.csprojfromNullable=enabletoNullable=annotations(build-time generator scaffolding doesn't need flow analysis)MqttApplicationMessage.Payload→PayloadSegment(via local extension methods) andWithTls(TlsParameters)→WithTlsOptions(...)lambda acrossMTConnect.NET-MQTT,MTConnect.NET-AgentModule-MqttAdapter,MTConnect.NET-AdapterModule-MQTTnew)newto derivedWriteXml/FromXmlstatics onXml*Asset.cs, toIComponent.Type/IDevice.Type, toFileAsset.TypeId, toMTConnectObservationFileBuffer.Dispose(), and to SysML-Import internals#pragma warning disable CS0067with comment explaining the public-API contractawait)asyncmodifier (Task exception semantics matter) and addawait Task.CompletedTask;[SupportedOSPlatform("windows")]onMTConnect{Agent,Adapter}Service,WindowsService, the Ceen socket-handle bridge, and the derivedServiceclasses in the Agent / Adapter applicationsexincatch)catch (Exception ex)withcatch (Exception)at 8 sites_connectionStatustoDisconnected, drop unused locals, pragma-wrap legacy AppDomain / WebRequest paths, bang-postfix post-assert dereferences, discard fire-and-forgetTask, markInitializeLifetimeServiceoverride[Obsolete], drop dead_clientInformationTimerfieldFinal no-incremental Debug build: 0 errors, 64 warnings (24
NU190xdeferred to #149, 40.g.csCS0108/CS0109deferred to post-#162 regen).Tests: full suite green with the upstream CI filter (
Category!=RequiresDocker&Category!=XsdLoadStrict&Category!=E2E). Without the filter, the only failures are 36XsdLoadStrictcases already known and excluded from CI per.github/workflows/dotnet.yml.<TreatWarningsAsErrors>gate — deferredThe user's mission spec asked to flip
<TreatWarningsAsErrors>true</TreatWarningsAsErrors>onDirectory.Build.propsonce the count hits zero. The flip waits on the two follow-up channels above clearing — otherwise the gate would break the build immediately on the merged result of this PR + #149 + the post-#162 regen.Plan: once #149 lands and the post-#162 template regen lands, a small follow-up commit flips the gate.
Touches no
.g.csCONVENTIONS sec15c forbids hand-editing generated outputs. Where a generated file emits a warning, the fix has to live in the Scriban template under
build/MTConnect.NET-SysML-Import/CSharp/Templates/*.scribanand the file is re-emitted in a controlled, submodule-pinned regen — which means after #162.Scope discipline
The warning sweep stays in this PR. No behavioural changes, no public-API renames, no in-place edits to other in-flight branches' scope. Lands after #160 (campaign clean-up) and before #157 (vitepress docs site) in the merge train.