Struct KafkaSeedMessage 

pub struct KafkaSeedMessage {
    pub key: Option<String>,
    pub value: String,
    pub headers: HashMap<String, String>,
}

A single message to inject into a topic’s log at broker startup. See KafkaConfig::seed_messages for how these get wired in.

Fields

key: Option<String>

Optional record key. When present, the broker uses Kafka’s hash-on-key strategy to assign a partition; same key always lands on the same partition. When absent, the round-robin counter picks.

value: String

Record value. Stored verbatim — typically a JSON or text payload, but raw UTF-8 strings are fine for tests.

headers: HashMap<String, String>

Optional record headers. Same shape as on-the-wire Kafka headers.

Trait Implementations

impl Clone for KafkaSeedMessage

fn clone(&self) -> KafkaSeedMessage

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for KafkaSeedMessage

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for KafkaSeedMessage

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl JsonSchema for KafkaSeedMessage

fn schema_name() -> String

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 is_referenceable() -> bool

Whether JSON Schemas generated for this type should be re-used where possible using the $ref keyword.

impl Serialize for KafkaSeedMessage

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

where __S: Serializer,

Serialize this value into the given Serde serializer.