feat(concepts): add C++20 concepts for logger, monitoring, and transport interfaces#247
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…ort interfaces Add new C++20 concept definitions for compile-time type constraints: - concepts/logger.h: LoggerLike, BasicLogger, LevelAwareLogger, FlushableLogger, StructuredLogger, LoggerProviderLike, LoggerRegistryLike - concepts/monitoring.h: MetricCollectorLike, CounterMetric, GaugeMetric, HistogramMetric, TimingMetric, MetricCollectorProviderLike - concepts/transport.h: HttpClientLike, UdpClientLike, HttpSender, HttpAvailabilityChecker, UdpConnectable, UdpSender, UdpConnectionStatus, TransportClient, provider concepts Updates: - Fix VoidResult forward declaration conflict in callable.h by including fwd.h - Update concepts.h umbrella header with new concept categories and documentation - Add comprehensive unit tests with static_assert compile-time validation Benefits: - Clearer error messages for template constraint violations - Self-documenting interface requirements - Zero runtime overhead (compile-time only) - Better IDE support for auto-completion Resolves: #244
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Apr 13, 2026
…ort interfaces (#247) Add new C++20 concept definitions for compile-time type constraints: - concepts/logger.h: LoggerLike, BasicLogger, LevelAwareLogger, FlushableLogger, StructuredLogger, LoggerProviderLike, LoggerRegistryLike - concepts/monitoring.h: MetricCollectorLike, CounterMetric, GaugeMetric, HistogramMetric, TimingMetric, MetricCollectorProviderLike - concepts/transport.h: HttpClientLike, UdpClientLike, HttpSender, HttpAvailabilityChecker, UdpConnectable, UdpSender, UdpConnectionStatus, TransportClient, provider concepts Updates: - Fix VoidResult forward declaration conflict in callable.h by including fwd.h - Update concepts.h umbrella header with new concept categories and documentation - Add comprehensive unit tests with static_assert compile-time validation Benefits: - Clearer error messages for template constraint violations - Self-documenting interface requirements - Zero runtime overhead (compile-time only) - Better IDE support for auto-completion Resolves: #244
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Summary
Changes
New Concept Files
concepts/logger.h
BasicLogger: Types with basic log functionalityLevelAwareLogger: Types supporting log level filteringFlushableLogger: Types supporting flush operationStructuredLogger: Types supporting structured log entriesLoggerLike: Complete ILogger interface constraintLoggerProviderLike,LoggerRegistryLike: DI support conceptsconcepts/monitoring.h
CounterMetric: Types supporting increment operationsGaugeMetric: Types supporting gauge operationsHistogramMetric: Types supporting histogram observationsTimingMetric: Types supporting timing measurementsMetricCollectorLike: Complete IMetricCollector constraintMetricCollectorProviderLike: DI support conceptconcepts/transport.h
HttpSender,HttpAvailabilityChecker: HTTP client conceptsHttpClientLike: Complete IHttpClient interface constraintUdpConnectable,UdpSender,UdpConnectionStatus: UDP client conceptsUdpClientLike: Complete IUdpClient interface constraintTransportClient: Generic transport client constraint (HTTP or UDP)Bug Fixes
callable.hby includingfwd.hinsteadDocumentation
concepts.humbrella header with new concept categoriesBenefits
Test plan
Resolves: #244