Struct DataContract 

pub struct DataContract {
    pub required_classification: String,
    pub purpose: String,
    pub retention: String,
    pub allow_forwarding: bool,
}

Data-processing contract between the gateway and a downstream agent (P2-7).

Federation only forwards classified data to agents that advertise a data_class at least as protective as required_classification. The classification ordering is public < internal < confidential; an agent that advertises no classification (or an unknown one) is not admitted — fail closed.

Fields

required_classification: String

Minimum data_class the downstream agent must advertise.

purpose: String

Purpose the data may be used for (informational, surfaces in errors).

retention: String

Retention the downstream promises (e.g. “session”, “7d”).

allow_forwarding: bool

Whether the downstream may forward data to further agents.

Implementations

impl DataContract

pub fn new( required_classification: impl Into<String>, purpose: impl Into<String>, retention: impl Into<String>, allow_forwarding: bool, ) -> Self

Create a contract.

pub fn admits(&self, data_class: Option<&str>) -> bool

Whether an agent advertising data_class satisfies this contract.

Fail-closed: an unadvertised or unknown data_class never admits.

Trait Implementations

impl Clone for DataContract

fn clone(&self) -> DataContract

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for DataContract

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

Formats the value using the given formatter.