Struct DriverConfig 

pub struct DriverConfig {
    pub datagram_byte_limit: usize,
    pub datagram_count: usize,
    pub context_count: usize,
}

Config a load generator reads to shape its output to this timeline’s SUT. first_sample_config samples it beside datadog.yaml from one draw, so the generator and the SUT are driven together.

Fields

datagram_byte_limit: usize

Max bytes a generator packs into one datagram, the smaller of the SUT’s sampled receive buffer and DATAGRAM_BYTE_LIMIT. A datagram this size fits one read, so the SUT never truncates a line mid-token.

datagram_count: usize

Datagrams a driver invocation ships this timeline.

context_count: usize

Distinct contexts a driver invocation fetches from the shared pool as its working set.

Sampled boundary-biased log-uniform in 1..=1_024. Valid values run 1..=65_536, the intake’s per-request ceiling. Outside that the intake rejects every /contexts request, the driver waits out its fetch budget and ships nothing, so Self::read rejects such a config rather than letting a timeline generate no load. Every context in a pull gets a line in every datagram that has room, so a larger pull makes fatter datagrams over more identities rather than thinner series, and the trade is against how often any one identity recurs.

Implementations

impl DriverConfig

pub fn to_yaml(&self) -> Result<String>

Render self as a driver.yaml string.

Errors

Returns an error if serialization fails.

pub fn read(config_dir: &Path) -> Result<Self>

Read the driver config from the driver.yaml that first_sample_config wrote to config_dir.

Errors

Returns an error if the config is unreadable or is not valid YAML with an integer datagram_byte_limit.

Trait Implementations

impl Clone for DriverConfig

fn clone(&self) -> DriverConfig

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for DriverConfig

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for DriverConfig

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for DriverConfig

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Copy for DriverConfig