feat: per-handler error channel and delayed retry for async endpoints (fixes #659)#665

Merged

dgafka merged 11 commits into

mainfrom

dead-letter-with-channel-adapter

May 7, 2026

Commits on May 7, 2026

additional features
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delayed retry
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fail-fast on #[ErrorChannel] / #[DelayedRetry] placed directly on async handler methods
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Merge remote-tracking branch 'origin/main' into dead-letter-with-channel-adapter
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reject #[DelayedRetry] on inbound channel adapters; allow #[InstantRetry] on #[Scheduled]
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test: KafkaConsumer dead letter replay parity with Dbal scheduled test
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verify replyAll() triggers KafkaConsumer handler synchronously
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refactor: consolidate ChannelAdapter into MessageConsumer; inline test fixtures; extract exception factory
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extract more exception messages into ErrorChannelExceptionMessages factory
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update OpenTelemetry tracing tests for new inbound channel adapter span name
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make multi-tenant projection test deterministic by polling all queued messages
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