Enum CheckpointError 

pub enum CheckpointError {
    Serialize(Box<dyn Error + Send + Sync>),
    Deserialize(Box<dyn Error + Send + Sync>),
    SchemaMigration {
        from: u32,
        to: u32,
        reason: String,
    },
    Storage(Box<dyn Error + Send + Sync>),
    Database(Box<dyn Error + Send + Sync>),
    Serialization(Box<dyn Error + Send + Sync>),
    NotFound {
        thread_id: String,
        checkpoint_id: String,
    },
    PoolExhausted,
}

Checkpoint operation errors

Represents all possible errors that can occur during checkpoint operations, including serialization, storage, and schema migration failures.

Variants

Serialize(Box<dyn Error + Send + Sync>)

Serialization failed

Occurs when converting checkpoint data to a serialized format (JSON/MessagePack).

Deserialize(Box<dyn Error + Send + Sync>)

Deserialization failed

Occurs when parsing serialized data back into checkpoint structures.

SchemaMigration

Schema migration failed

Occurs when migrating checkpoint data between incompatible schema versions.

Fields

from: u32

Source schema version

to: u32

Target schema version

reason: String

Human-readable reason for migration failure

Storage(Box<dyn Error + Send + Sync>)

Storage operation error

Occurs when underlying storage backend fails (database, filesystem, etc.).

Database(Box<dyn Error + Send + Sync>)

Database operation error

Occurs when database operations fail (query, connection, transaction, etc.).

Serialization(Box<dyn Error + Send + Sync>)

Serialization error (alias for Serialize)

This variant is an alias for Serialize and exists for compatibility with external code that expects this name.

NotFound

Checkpoint not found

Occurs when attempting to retrieve a non-existent checkpoint.

Fields

thread_id: String

Thread identifier

checkpoint_id: String

Checkpoint identifier

PoolExhausted

Connection pool exhausted

Occurs when no database connections are available in the pool.

Implementations

impl CheckpointError

pub fn serialize_msg(msg: String) -> Self

Create a serialization error from a string message

pub fn deserialize_msg(msg: String) -> Self

Create a deserialization error from a string message

pub fn storage_msg(msg: String) -> Self

Create a storage error from a string message

pub fn database_msg(msg: String) -> Self

Create a database error from a string message

Trait Implementations

impl Debug for CheckpointError

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Display for CheckpointError

fn fmt(&self, __formatter: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Error for CheckpointError

fn source(&self) -> Option<&(dyn Error + 'static)>

Returns the lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0:

use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)

Provides type-based access to context intended for error reports.

impl From<Error> for CheckpointError

fn from(err: Error) -> Self

Converts to this type from the input type.

impl From<Error> for CheckpointError

fn from(err: Error) -> Self

Converts to this type from the input type.