Struct PlatformCounters 

pub struct PlatformCounters {
    pub fetches_started: u64,
    pub fetches_completed: u64,
    pub fetch_bytes_sent: u64,
    pub fetch_bytes_received: u64,
    pub storage_reads: u64,
    pub storage_writes: u64,
    pub storage_bytes_read: u64,
    pub storage_bytes_written: u64,
}

Everything one PlatformHost has moved.

Fields

fetches_started: u64

Requests handed to the provider.

fetches_completed: u64

Requests drained from the ready queue.

Counts failures as well as responses: a request that could not be completed still completed, in the sense the queue means. The gap between this and fetches_started is the number still in flight, plus any released before they were drained.

fetch_bytes_sent: u64

Request-body bytes handed to the provider.

Counted at start_fetch, so it counts what was submitted rather than what reached a server. A request that failed to connect still counted its body here, which is correct for the question “what did the guest ask us to send”.

fetch_bytes_received: u64

Response-body bytes, counted once per request when it is drained.

Once, not once per read: a guest reading the same body twice has moved twice the bytes across its own boundary, and that is the binding’s counter to keep. Headers are not counted, because a provider may synthesise them (data: URLs) and a compressed transfer never carried the bytes the header map now holds.

storage_reads: u64

storage_writes: u64

Every call that could change the store: set, remove, clear.

A remove of an absent key and a clear of an empty origin are counted even though nothing changed, because this crate does not ask the provider whether anything did. It is a count of calls, not of edits.

storage_bytes_read: u64

Value bytes returned by get. A miss adds nothing.

storage_bytes_written: u64

Key plus value bytes accepted by set. A rejected write adds nothing.

Trait Implementations

impl Clone for PlatformCounters

fn clone(&self) -> PlatformCounters

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for PlatformCounters

impl Debug for PlatformCounters

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

Formats the value using the given formatter.

impl Default for PlatformCounters

fn default() -> PlatformCounters

Returns the “default value” for a type.

impl Eq for PlatformCounters

impl PartialEq for PlatformCounters

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for PlatformCounters