Struct DaemonMetadata 

pub struct DaemonMetadata {
    pub pid: u32,
    pub session: Uuid,
    pub owner: DaemonOwner,
    pub version: String,
}

On-disk daemon metadata. Persisted as mati.pid, read by the CLI proxy and hook scripts to route through the daemon socket.

The session UUID is a session marker for audit/provenance — NOT an authentication token. Peer identity is established via Unix peer credentials (peer_cred()).

Fields

pid: u32

PID of the daemon process.

session: Uuid

Session UUID — included in every IPC request for audit correlation. Generated fresh on each daemon startup.

owner: DaemonOwner

Who started this daemon (daemon vs mcp server).

version: String

Version of the binary serving this store.

Hooks and the MCP server can resolve to different binaries — hooks run .claude/hooks/mati, which mati init pinned to whichever executable ran it, while .mcp.json registers a bare mati off PATH. A rebuild of one and not the other puts a stale client against a live daemon, and hooks fail open on a protocol mismatch, so the symptom is silent under-enforcement. Recording the version here lets mati doctor name the mismatch instead.

#[serde(default)]: a mati.pid written by an older binary has no version, and must still parse.

Implementations

impl DaemonMetadata

pub fn new(owner: DaemonOwner) -> Self

Create metadata for the current process.

Trait Implementations

impl Clone for DaemonMetadata

fn clone(&self) -> DaemonMetadata

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for DaemonMetadata

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for DaemonMetadata

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for DaemonMetadata

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

where __S: Serializer,

Serialize this value into the given Serde serializer.