Enum ConstraintExpr 

pub enum ConstraintExpr {
    HasMetadata {
        key: String,
    },
    MetadataEquals {
        key: String,
        value: String,
    },
    MaxPayloadSize {
        bytes: usize,
    },
    Always,
    Never,
}

Constraint expression

Variants

HasMetadata

Check if metadata contains key

Fields

key: String

MetadataEquals

Check metadata value

Fields

key: String

value: String

MaxPayloadSize

Check payload size

Fields

bytes: usize

Always

Always pass

Never

Always fail

Implementations

impl ConstraintExpr

pub fn evaluate(&self, context: &PolicyContext) -> bool

Trait Implementations

impl Clone for ConstraintExpr

fn clone(&self) -> ConstraintExpr

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ConstraintExpr

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for ConstraintExpr

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for ConstraintExpr

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

where __S: Serializer,

Serialize this value into the given Serde serializer.