Enum ReducerMode 

pub enum ReducerMode {
    Streaming(StreamingReducerOpts),
    Once(usize),
    IdleFlush {
        expected: NonZeroUsize,
        idle_timeout: Duration,
        abandon_timeout: Duration,
    },
}

The mode in which a reducer operates.

Variants

Streaming(StreamingReducerOpts)

Streaming mode: continuously reduce and emit updates based on buffer size/timeout.

Once(usize)

Once mode: accumulate exactly n values, emit a single reduced update, then tear down.

IdleFlush

Idle-flush mode: emit after an idle interval and continue until all logical replies have arrived or the incomplete split port is abandoned.

Fields

expected: NonZeroUsize

Total number of logical replies expected by this split port.

idle_timeout: Duration

Time with no new replies before the current reduced batch is emitted.

abandon_timeout: Duration

Time with no new replies before an incomplete split port is removed.

Implementations

impl ReducerMode

pub fn is_streaming(&self) -> bool

Returns true if this is a ReducerMode::Streaming, otherwise false

pub fn as_streaming_mut(&mut self) -> Option<&mut StreamingReducerOpts>

Optionally returns mutable references to the inner fields if this is a ReducerMode::Streaming, otherwise None

pub fn as_streaming(&self) -> Option<&StreamingReducerOpts>

Optionally returns references to the inner fields if this is a ReducerMode::Streaming, otherwise None

pub fn into_streaming(self) -> Result<StreamingReducerOpts, Self>

Returns the inner fields if this is a ReducerMode::Streaming, otherwise returns back the enum in the Err case of the result

pub fn is_once(&self) -> bool

Returns true if this is a ReducerMode::Once, otherwise false

pub fn as_once_mut(&mut self) -> Option<&mut usize>

Optionally returns mutable references to the inner fields if this is a ReducerMode::Once, otherwise None

pub fn as_once(&self) -> Option<&usize>

Optionally returns references to the inner fields if this is a ReducerMode::Once, otherwise None

pub fn into_once(self) -> Result<usize, Self>

Returns the inner fields if this is a ReducerMode::Once, otherwise returns back the enum in the Err case of the result

pub fn is_idle_flush(&self) -> bool

Returns true if this is a ReducerMode::IdleFlush, otherwise false

pub fn as_idle_flush_mut( &mut self, ) -> Option<(&mut NonZeroUsize, &mut Duration, &mut Duration)>

Optionally returns mutable references to the inner fields if this is a ReducerMode::IdleFlush, otherwise None

pub fn as_idle_flush(&self) -> Option<(&NonZeroUsize, &Duration, &Duration)>

Optionally returns references to the inner fields if this is a ReducerMode::IdleFlush, otherwise None

pub fn into_idle_flush(self) -> Result<(NonZeroUsize, Duration, Duration), Self>

Returns the inner fields if this is a ReducerMode::IdleFlush, otherwise returns back the enum in the Err case of the result

Trait Implementations

impl Clone for ReducerMode

fn clone(&self) -> ReducerMode

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ReducerMode

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

Formats the value using the given formatter.

impl Default for ReducerMode

fn default() -> Self

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for ReducerMode

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Named for ReducerMode

fn typename() -> &'static str

The globally unique type name for the type. This should typically be the fully qualified Rust name of the type.

fn typehash() -> u64

A globally unique hash for this type. TODO: actually enforce perfect hashing

fn arm(&self) -> Option<&'static str>

If the named type is an enum, this returns the name of the arm of the value self.

fn typeid() -> TypeId

The TypeId for this type. TypeIds are unique only within a binary, and should not be used for global identification.

fn port() -> u64

A globally unique numeric identifier for this type.

unsafe fn arm_unchecked(self_: *const ()) -> Option<&'static str>

An unsafe version of ‘arm’, accepting a pointer to the value, for use in type-erased settings.

impl PartialEq for ReducerMode

fn eq(&self, other: &ReducerMode) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Serialize for ReducerMode

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for ReducerMode