Enum MaskAction 

pub enum MaskAction {
    Redact {
        mask: Value,
    },
    Hash,
    Tokenize {
        prefix: Option<String>,
    },
    Partial {
        keep_last: usize,
        mask_char: Option<char>,
    },
}

Available on crate feature masking only.

What to do with a value once a rule matches it.

Variants

Redact

Replace the value wholesale with a fixed mask (default "***"). Irreversible and not joinable — use for values you never need again.

Fields

mask: Value

Replacement value. Defaults to the JSON string "***". Set it to an explicit null to null the field (e.g. for a nullable DB column), or to any other JSON scalar you prefer.

Hash

Replace the value with its hex HMAC-SHA256 (keyed) / SHA-256 (unkeyed) digest. Deterministic → joinable; irreversible.

Tokenize

Replace the value with a short opaque token derived from a keyed digest, optionally with a stable prefix (e.g. tok_). Deterministic → joinable.

Fields

prefix: Option<String>

Literal prefix prepended to every token (e.g. "tok_").

Partial

Reveal only the last keep_last characters, replacing the rest with mask_char (default *). Preserves format/length for readability (e.g. ****1234). keep_last: 0 masks everything.

Fields

keep_last: usize

Number of trailing characters to keep in the clear. Default 4.

mask_char: Option<char>

Character used for the masked prefix. Default *.

Implementations

impl MaskAction

pub fn label(&self) -> &'static str

Stable action label (closed set — safe as a metric label).

Trait Implementations

impl Clone for MaskAction

fn clone(&self) -> MaskAction

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for MaskAction

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for MaskAction

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl JsonSchema for MaskAction

fn schema_name() -> Cow<'static, str>

The name of the generated JSON Schema.

fn schema_id() -> Cow<'static, str>

Returns a string that uniquely identifies the schema produced by this type.

fn json_schema(generator: &mut SchemaGenerator) -> Schema

Generates a JSON Schema for this type.

fn inline_schema() -> bool

Whether JSON Schemas generated for this type should be included directly in parent schemas, rather than being re-used where possible using the $ref keyword.

impl Serialize for MaskAction

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

where __S: Serializer,

Serialize this value into the given Serde serializer.