Struct ExternalEngineConfig 

pub struct ExternalEngineConfig {
    pub command: String,
    pub args: Vec<String>,
    pub timeout_ms: u64,
    pub on_error: ErrorFallback,
    pub format_map: HashMap<String, String>,
}

Configuration for an external permission engine.

Fields

command: String

Path to the external engine binary (resolved via PATH if not absolute).

args: Vec<String>

Arguments passed to the engine. Use {format} as a placeholder for the tool format (e.g. ["hook", "handle", "--mode", "{format}"]). The placeholder is replaced with the resolved format string before spawning.

timeout_ms: u64

Timeout in milliseconds. Default: 5000 (5 seconds).

on_error: ErrorFallback

What to do when the engine fails (crash, timeout, bad output).

format_map: HashMap<String, String>

Override the default format strings used for {format} substitution. Keys are the default names (claude-code, gemini, cursor); values are the replacements the engine expects.

Example: { "claude-code" = "claude", "gemini" = "google" }

Implementations

impl ExternalEngineConfig

pub fn resolve_format(&self, format: HookFormat) -> String

Resolve the format string for a given hook format, applying format_map overrides if present.

Trait Implementations

impl Clone for ExternalEngineConfig

fn clone(&self) -> ExternalEngineConfig

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for ExternalEngineConfig

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

Formats the value using the given formatter.

impl Default for ExternalEngineConfig

fn default() -> Self

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for ExternalEngineConfig

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for ExternalEngineConfig

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.