Struct PriceFeedMessage

#[repr(C)]
pub struct PriceFeedMessage {
    pub feed_id: FeedId,
    pub price: i64,
    pub conf: u64,
    pub exponent: i32,
    pub publish_time: i64,
    pub prev_publish_time: i64,
    pub ema_price: i64,
    pub ema_conf: u64,
}

Fields

feed_id: FeedId

price: i64

conf: u64

exponent: i32

publish_time: i64

The timestamp of this price update in seconds

prev_publish_time: i64

The timestamp of the previous price update. This field is intended to allow users to identify the single unique price update for any moment in time: for any time t, the unique update is the one such that prev_publish_time < t <= publish_time.

Note that there may not be such an update while we are migrating to the new message-sending logic, as some price updates on pythnet may not be sent to other chains (because the message-sending logic may not have triggered). We can solve this problem by making the message-sending mandatory (which we can do once publishers have migrated over).

Additionally, this field may be equal to publish_time if the message is sent on a slot where where the aggregation was unsuccesful. This problem will go away once all publishers have migrated over to a recent version of pyth-agent.

ema_price: i64

ema_conf: u64

Implementations

impl PriceFeedMessage

pub fn get_feed_from_bytes(v: &[u8]) -> PriceFeedMessage

Interpret a PriceFeedMessage from a byte slice (which must be exactly 84 bytes long with no padding, but is really 88 bytes after Rust struct padding). This is useful if you want to read price/confidence with no checks for verification or how recent the update was.

If you have fetched a “Price Feed Account” on chain, you probably want to get the data with

let data = &ctx.accounts.price.try_borrow_data()?[..];

and you can extract this message by reading bytes 41-129. Skip the first 8 bytes (Anchor discriminator), the authority (32 bytes), and the verification type (1-2 bytes). The end of the message is also padding.

let message_bytes = &data[41..125]; or &data[42..126];

Trait Implementations

impl Clone for PriceFeedMessage

fn clone(&self) -> PriceFeedMessage

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for PriceFeedMessage

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

Formats the value using the given formatter.

impl PartialEq for PriceFeedMessage

fn eq(&self, other: &PriceFeedMessage) -> 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 Copy for PriceFeedMessage

impl StructuralPartialEq for PriceFeedMessage