Enum SampleStrategy 

pub enum SampleStrategy {
    OnDiff,
    Always,
    // some variants omitted
}

SampleStrategy instructs Archivist on the circumstances under which you want to receive data for the given SampleDatum.

Variants

OnDiff

ON_DIFF causes the server to keep a cache of previous values. At each sample period, it compares the new value to the old one and only alerts if there is a change.

Always

ALWAYS alerts at each sample period it finds data, whether it has changed or not.

Note: it does NOT alert if there is no data at all.

Implementations

impl SampleStrategy

pub fn from_primitive(prim: u8) -> Option<SampleStrategy>

pub fn from_primitive_allow_unknown(prim: u8) -> SampleStrategy

pub fn unknown() -> SampleStrategy

pub const fn into_primitive(self) -> u8

pub fn is_unknown(&self) -> bool

Trait Implementations

impl Clone for SampleStrategy

fn clone(&self) -> SampleStrategy

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SampleStrategy

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

Formats the value using the given formatter.

impl<D> Decode<SampleStrategy, D> for SampleStrategy

where D: ResourceDialect,

fn new_empty() -> SampleStrategy

Creates a valid instance of Self. The specific value does not matter, since it will be overwritten by decode.

unsafe fn decode( &mut self, decoder: &mut Decoder<'_, D>, offset: usize, _depth: Depth, ) -> Result<(), Error>

Decodes an object of type T from the decoder’s buffers into self.

impl<D> Encode<SampleStrategy, D> for SampleStrategy

where D: ResourceDialect,

unsafe fn encode( self, encoder: &mut Encoder<'_, D>, offset: usize, _depth: Depth, ) -> Result<(), Error>

Encodes the object into the encoder’s buffers. Any handles stored in the object are swapped for Handle::INVALID.

impl Hash for SampleStrategy

fn hash<__H>(&self, state: &mut __H)

where __H: Hasher,

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for SampleStrategy

fn cmp(&self, other: &SampleStrategy) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for SampleStrategy

fn eq(&self, other: &SampleStrategy) -> 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 PartialOrd for SampleStrategy

fn partial_cmp(&self, other: &SampleStrategy) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl TypeMarker for SampleStrategy

type Owned = SampleStrategy

The owned Rust type which this FIDL type decodes into.

fn inline_align(_context: Context) -> usize

Returns the minimum required alignment of the inline portion of the encoded object. It must be a (nonzero) power of two.

fn inline_size(_context: Context) -> usize

Returns the size of the inline portion of the encoded object, including padding for alignment. Must be a multiple of inline_align.

fn encode_is_copy() -> bool

Returns true if the memory layout of Self::Owned matches the FIDL wire format and encoding requires no validation. When true, we can optimize encoding arrays and vectors of Self::Owned to a single memcpy.

fn decode_is_copy() -> bool

Returns true if the memory layout of Self::Owned matches the FIDL wire format and decoding requires no validation. When true, we can optimize decoding arrays and vectors of Self::Owned to a single memcpy.

impl ValueTypeMarker for SampleStrategy

type Borrowed<'a> = SampleStrategy

The Rust type to use for encoding. This is a particular Encode<Self> type cheaply obtainable from &Self::Owned. There are three cases:

fn borrow( value: &<SampleStrategy as TypeMarker>::Owned, ) -> <SampleStrategy as ValueTypeMarker>::Borrowed<'_>

Cheaply converts from &Self::Owned to Self::Borrowed.

impl Copy for SampleStrategy

impl Eq for SampleStrategy

impl StructuralPartialEq for SampleStrategy