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//! Core API error types.
//!
//! These errors are exposed to end users through the API and should provide
//! clear, actionable error messages.
use thiserror::Error;
/// Core API errors that may be returned to users.
#[derive(Debug, Clone, Error)]
pub enum Error {
// ========================================
// System Initialization Errors
// ========================================
/// System initialization failed.
#[error("System initialization failed: {0}")]
SystemInit(String),
/// Failed to create a required actor.
#[error("Failed to initialize {actor}: {reason}")]
ActorCreation { actor: String, reason: String },
/// Required helper or resource not found.
#[error("Required resource '{name}' not found: {reason}")]
MissingResource { name: String, reason: String },
// ========================================
// Network Errors
// ========================================
/// Network operation failed.
#[error("Network error: {0}")]
Network(String),
/// Unable to retrieve network state.
#[error("Unable to retrieve network state: {0}")]
NetworkState(String),
// ========================================
// Request Handling Errors
// ========================================
/// Request could not be processed.
#[error("Request processing failed: {0}")]
RequestProcessing(String),
/// Request signature is invalid or verification failed.
#[error("Invalid request signature: {0}")]
InvalidSignature(String),
/// Node was unable to sign the request.
#[error("Failed to sign request: {0}")]
SigningFailed(String),
/// Request not found in tracking system.
#[error("Request '{0}' not found")]
RequestNotFound(String),
/// Request is in an invalid state for this operation.
#[error("Request is in invalid state: {0}")]
InvalidRequestState(String),
// ========================================
// Approval Errors
// ========================================
/// Invalid approval state transition.
#[error("Invalid approval state: cannot set approval to '{0}'")]
InvalidApprovalState(String),
/// Approval not found for subject.
#[error("No approval request found for subject '{0}'")]
ApprovalNotFound(String),
/// Failed to update approval state.
#[error("Failed to update approval state: {0}")]
ApprovalUpdateFailed(String),
// ========================================
// Subject & Governance Errors
// ========================================
/// Subject not found.
#[error("Subject '{0}' not found")]
SubjectNotFound(String),
/// Subject is not active.
#[error("Subject '{0}' is not active")]
SubjectNotActive(String),
/// Governance not found.
#[error("Governance '{0}' not found")]
GovernanceNotFound(String),
/// Governance still has trackers associated and cannot be deleted.
#[error("Governance '{governance_id}' still has trackers associated")]
GovernanceHasTrackers {
governance_id: String,
trackers: Vec<String>,
},
/// Invalid subject identifier.
#[error("Invalid subject identifier: {0}")]
InvalidSubjectId(String),
// ========================================
// Authorization Errors
// ========================================
/// Authorization failed.
#[error("Authorization failed: {0}")]
Unauthorized(String),
/// Insufficient permissions for operation.
#[error("Insufficient permissions: {0}")]
Forbidden(String),
/// Node is running in safe mode and mutating operations are disabled.
#[error("Safe mode: {0}")]
SafeMode(String),
/// Authentication subject operation failed.
#[error("Authentication operation failed: {0}")]
AuthOperation(String),
/// Witnesses not found for subject.
#[error("No witnesses found for subject '{0}'")]
WitnessesNotFound(String),
// ========================================
// Query Errors
// ========================================
/// Query execution failed.
#[error("Query failed: {0}")]
QueryFailed(String),
/// No events found matching criteria.
#[error("No events found for subject '{0}'")]
NoEventsFound(String),
/// Event not found at specified sequence number.
#[error("Event not found for subject '{subject}' at sequence number {sn}")]
EventNotFound { subject: String, sn: u64 },
/// Invalid query parameters.
#[error("Invalid query parameters: {0}")]
InvalidQueryParams(String),
/// Database query error.
#[error("Database error: {0}")]
DatabaseError(String),
// ========================================
// Validation Errors
// ========================================
/// Request validation failed.
#[error("Validation failed: {0}")]
ValidationFailed(String),
/// Invalid event request format.
#[error("Invalid event request: {0}")]
InvalidEventRequest(String),
/// Schema validation failed.
#[error("Schema validation failed: {0}")]
SchemaValidation(String),
// ========================================
// Actor Communication Errors
// ========================================
/// Actor communication failed.
#[error("Internal communication error: failed to communicate with {actor}")]
ActorCommunication { actor: String },
/// Received unexpected response from actor.
#[error(
"Unexpected response from {actor}: expected {expected}, got {received}"
)]
UnexpectedResponse {
actor: String,
expected: String,
received: String,
},
/// Actor returned an error.
#[error("Operation failed: {0}")]
ActorError(String),
// ========================================
// Transfer Errors
// ========================================
/// Subject transfer operation failed.
#[error("Transfer operation failed: {0}")]
TransferFailed(String),
/// No pending transfers found.
#[error("No pending transfers found")]
NoPendingTransfers,
// ========================================
// Distribution Errors
// ========================================
/// Manual distribution failed.
#[error("Manual distribution failed for subject '{0}'")]
DistributionFailed(String),
/// Update operation failed.
#[error("Update failed for subject '{0}': {1}")]
UpdateFailed(String, String),
// ========================================
// Generic/Fallback Errors
// ========================================
/// Internal server error (catch-all for unexpected errors).
#[error("Internal error: {0}")]
Internal(String),
/// Operation timed out.
#[error("Operation timed out: {0}")]
Timeout(String),
/// Feature not implemented.
#[error("Feature not implemented: {0}")]
NotImplemented(String),
}
// Conversions from subsystem errors
impl From<crate::system::SystemError> for Error {
fn from(err: crate::system::SystemError) -> Self {
Self::SystemInit(err.to_string())
}
}
impl From<ave_actors::ActorError> for Error {
fn from(err: ave_actors::ActorError) -> Self {
match err {
ave_actors::ActorError::NotFound { path } => {
Self::MissingResource {
name: path.to_string(),
reason: "Actor not found".to_string(),
}
}
ave_actors::ActorError::Functional { description } => {
Self::ActorError(description)
}
ave_actors::ActorError::FunctionalCritical { description } => {
Self::Internal(description)
}
_ => Self::Internal(err.to_string()),
}
}
}