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Hoshina
a32d98534c
Define sentinel error types (ErrNotRunning, ErrRateLimit, ErrTemporary, ErrSendFailed) so the Manager can classify Send failures and choose the right retry strategy: permanent errors bail immediately, rate-limit errors use a fixed 1s delay, and temporary/unknown errors use exponential backoff (500ms→1s→2s, capped at 8s, up to 3 retries). A per-channel token-bucket rate limiter (golang.org/x/time/rate) throttles outbound sends before they hit the platform API.
22 lines
691 B
Go
22 lines
691 B
Go
package channels
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import "errors"
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var (
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// ErrNotRunning indicates the channel is not running.
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// Manager will not retry.
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ErrNotRunning = errors.New("channel not running")
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// ErrRateLimit indicates the platform returned a rate-limit response (e.g. HTTP 429).
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// Manager will wait a fixed delay and retry.
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ErrRateLimit = errors.New("rate limited")
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// ErrTemporary indicates a transient failure (e.g. network timeout, 5xx).
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// Manager will use exponential backoff and retry.
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ErrTemporary = errors.New("temporary failure")
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// ErrSendFailed indicates a permanent failure (e.g. invalid chat ID, 4xx non-429).
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// Manager will not retry.
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ErrSendFailed = errors.New("send failed")
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)
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