Enum PoolError 

pub enum PoolError {
    Connect(Error),
    IoWrite(String),
    IoRead(String),
    ResponseParse(String),
    RegistryCorrupted(String),
    Spawn(String),
    Handshake(String),
    SessionNotFound(String),
    VersionMismatch {
        client: String,
        server: String,
    },
}

Errors produced by the process-pool IPC layer.

All variants are propagated to callers via Result<T, PoolError>. At the AppService boundary (Subtask 5/6) these are converted to String to satisfy the existing EngineApi wire contract.

Variants

Connect(Error)

Unix-domain socket connection failed.

IoWrite(String)

Socket write (or flush) failed after connection was established.

IoRead(String)

Socket read failed after connection was established.

ResponseParse(String)

A response line from the worker could not be parsed as valid JSON.

RegistryCorrupted(String)

registry.json could not be parsed (corrupt or schema mismatch).

Treating this as “empty registry” would silently kill live workers; callers must propagate this error.

Spawn(String)

Spawning the worker subprocess failed.

Handshake(String)

Version handshake with the worker was rejected or timed out.

SessionNotFound(String)

The requested session ID is not present in the pool.

VersionMismatch

The worker was built with a different crate version.

Fields

client: String

server: String

Trait Implementations

impl Debug for PoolError

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

Formats the value using the given formatter.

impl Display for PoolError

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

Formats the value using the given formatter.

impl Error for PoolError

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 PoolError

fn from(source: Error) -> Self

Converts to this type from the input type.