Struct ComponentData

pub struct ComponentData {
    pub namespace: Option<String>,
    pub annotations: Option<Vec<Annotation>>,
    /* private fields */
}

Data known to a component, but not exposed to the platform, to attach to feedback reports.

Fields

namespace: Option<String>

The top-level namespace associated with the data:

• Is intended to group related data together and reduce data key collisions across namespaces.
• May be shared by multiple clients, e.g., there could be multiple clients within the same component or across components that want to expose related data and they would all use the same namespace.
• Will be prefixed to every data key passed within that namespace in all feedback reports, e.g., the annotation “version” would appear as “foo.version” in all feedback reports if the namespace is “foo”.
• Must match [a-z-]+, i.e. only lowercase letters and hyphens or this will result in a ZX_ERR_INVALID_ARGS epitaph.
• Must not match a reserved namespace used internally for platform data, e.g., “build”, or this will result in a ZX_ERR_INVALID_ARGS epitaph. The list of reserved namespaces is internal and subject to change for now.

annotations: Option<Vec<Annotation>>

A vector of key-value string pairs, e.g., <"version", "1.2.3.45">.

Keys:

• Should be unique as only the latest value for a given key in the vector will be considered.
• Must match [a-z-.]+, i.e. only lowercase letters, hyphens and periods. Use periods for sub-namespacing, e.g., “build.label” and “build.type”, so that related annotations are grouped together (here related to “build”) when sorted lexicographically.

Trait Implementations

impl Clone for ComponentData

fn clone(&self) -> ComponentData

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for ComponentData

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

Formats the value using the given formatter.

impl<D: ResourceDialect> Decode<ComponentData, D> for ComponentData

fn new_empty() -> Self

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<()>

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

impl Default for ComponentData

fn default() -> ComponentData

Returns the “default value” for a type.

impl<D: ResourceDialect> Encode<ComponentData, D> for &ComponentData

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

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

impl PartialEq for ComponentData

fn eq(&self, other: &ComponentData) -> 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 TypeMarker for ComponentData

type Owned = ComponentData

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 ComponentData

type Borrowed<'a> = &'a ComponentData

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: &<Self as TypeMarker>::Owned) -> Self::Borrowed<'_>

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

impl Persistable for ComponentData

impl StructuralPartialEq for ComponentData