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/// Error taxonomy for liminal channel, conversation, schema, and delivery failures.
#[derive(Debug, thiserror::Error)]
pub enum LiminalError {
/// A durable append whose outcome must be resolved before retrying.
#[error("unresolved publish: {append}")]
PublishUnresolved {
append: crate::durability::UnresolvedAppend,
},
/// Authoritative lookup of a producer's original publish could not be read.
#[error("channel {channel} cannot resolve idempotency key {idempotency_key}: {message}")]
ResolutionUnreadable {
channel: String,
idempotency_key: String,
message: String,
},
/// The requested channel does not exist.
#[error("{message}")]
ChannelNotFound { message: String },
/// The requested channel is closed.
#[error("{message}")]
ChannelClosed { message: String },
/// A payload does not match the channel schema.
#[error("{message}")]
SchemaMismatch { message: String },
/// Publishing a payload failed.
#[error("{message}")]
PublishFailed { message: String },
/// Creating or maintaining a subscription failed.
#[error("{message}")]
SubscriptionFailed { message: String },
/// Conversation execution failed.
#[error("{message}")]
ConversationFailed { message: String },
/// Conversation execution timed out.
#[error("{message}")]
ConversationTimeout { message: String },
/// A linked participant process crashed.
#[error("{message}")]
ParticipantCrashed { message: String },
/// Delivering a payload failed.
#[error("{message}")]
DeliveryFailed { message: String },
}